Small Molecule Inhibitors of Salt Inducible Kinases FIELD The present invention relates to the field of chemistry and medicine. More particularly, the present invention relates to salt-inducible kinases inhibitors and their use in medical treatment. CROSS REFERENCE TO RELATED APPLICATION This application claims priority to U.S. Provisional Application No. 63/144,034 filed on February 1, 2021, the disclosure of which is incorporated herein by reference in its entirety. BACKGROUND A protein kinase is an enzyme that catalyzes the transfer of phosphate groups to proteins or other organic molecules. The salt-inducible kinases (SIKs) are Ser/Thr kinases members of the Adenosine Monophosphate-Activated Kinase (AMPK) subfamily of kinases and three isoforms have been described (i.e., SIK1, SIK2 (QIK), and SIK3 (QSK) (1). Small molecule protein kinase inhibitors are useful for treating disease including, but not limited to, proliferative diseases (cancer, benign neoplasms, pathological angiogenesis), immune disorders (auto-inflammatory disease, autoimmune disease), and disorders of the musculoskeletal system. For example, the pan-Janus kinase inhibitor tofacitinib is approved to treat rheumatoid arthritis and ulcerative colitis. There is a need for small molecule kinase inhibitors that selectively inhibit SIK1, SIK2 and/or SIK3. Crohn’s disease and ulcerative colitis are the two major forms of inflammatory bowel disease (IBD), a disorder characterized by chronic inflammation of the gastrointestinal (GI) tract. There is an urgent need to discover new therapies for these disorders as broadly immunosuppressive therapies used to treat IBD are not always effective or durable, and can cause severe side effects (2). Aberrant host responses to the intestinal microbiota in genetically susceptible individuals disrupts immune homeostasis, leading to elevated levels of proinflammatory cytokines such as tumor necrosis factor (TNF) and interleukin (IL-12) and the development of IBD. In the gastrointestinal tract, homeostasis is an active process that requires a careful balance of host responses to the enteric luminal contents (3), a process for which the immunoregulatory cytokine IL-10 is vital (4). Single Nucleotide Polymorphisms (SNPs) in the genetic loci containing the anti-inflammatory cytokine IL10 or its receptor (IL10RA) are associated 1

with increased risk of Crohn’s disease and ulcerative colitis (5), and loss-of-function mutations in the coding regions of these genes lead to a rare but severe, pediatric-onset enterocolitis in affected individuals. This phenotype is recapitulated in mice deficient in either Il10 ^-/- or Il10ra ^-/- , which develop spontaneous colitis (4, 6). Together, these genetic data suggest that IBD patients may benefit from therapies that augment IL-10 function specifically in the intestinal mucosa. Approaches to target IL-10 to inflamed tissues hold therapeutic promise (7). For example, oral administration of bacteria (Lactococcus lactis) engineered to express IL-10 resulted in beneficial, though not persistent, effects in Crohn’s disease patients (8). In addition, a fusion protein linking recombinant IL-10 to an antibody targeting an inflammation associated integrin (dekavil) is well tolerated in initial clinical safety trials (9), (10). Similarly, small molecules that promote IL-10 production by aberrantly activated intestinal immune cells may represent a viable approach to dampen intestinal inflammation in IBD patients while avoiding the limitations of systemically administering recombinant IL-10. Several mechanistic classes of small molecules have been shown to enhance IL-10 production in activated myeloid cells, such as stimulating cAMP Response Element-Binding Protein (CREB) signaling with prostanoid receptor agonists (11), phosphodiesterase (PDE) inhibitors (12-14); disrupting signaling to NF-κB activation with inhibitors of protein kinase C (PKC) or glycogen synthase kinase-3β (GSK-3β) (15, 16); and increasing acetylated α-tubulin levels with paclitaxel or the HDAC6 inhibitor tubastatin A, reported to promote IL-10 production via p38 MAP kinase (17). However, these approaches either do not produce the desired outcome or are associated with potential liabilities (e.g., prostanoid receptor agonist like PGE2 do not show selectivity for IL-10 induction (13), and potent emetic effects have hampered development of PDE inhibitors to treat IBD (18). Small molecule SIK inhibitors may hold particular therapeutic potential for treatment of IBD because SIK inhibitors both enhance IL-10 production and reduce production of inflammatory cytokines, including TNF and IL-12, in both activated murine dendritic cells and monocyte- derived human macrophages and dendritic cells from healthy volunteers (13), (19). In addition, direct injection of a small molecule SIK inhibitor enhances levels of IL-10 and reduces levels of TNF in the serum and colon of mice during the acute inflammatory response induced by stimulation with lipopolysaccharide (20). The ability of SIK inhibitors to coordinately up-regulate IL-10 and suppress inflammatory cytokines is supported by studies in SIK1 and SIK2 kinase dead 2 knock-in mice; Dendritic cells derived from Sik1KI, Sik2KI double mutant mice secreted elevated levels of IL-10 and diminished levels of TNF and IL-12/23p40 in response to LPS (21). Therefore, small molecule SIK inhibitors represent a potential therapeutic strategy to enhance IL-10 production and concomitantly suppress production of pro-inflammatory cytokines by immune cells in the inflamed intestinal mucosa of IBD patients. In quiescent myeloid cells, the SIKs phosphorylate the CREB Regulated Transcription Coactivator (CRTC3)-3 as well as Histone Deacetylases (HDAC)-4 and HDAC5, which results in their cytosolic sequestration by binding to 14-3-3 proteins (12, 22, 23). Activation of Protein Kinase A (PKA) following prostanoid receptor stimulation inhibits SIK activity, enabling CRTC3 to enter the nucleus and stimulate transcription of CREB targets like IL-10 (12, 22). In addition, translocation of HDAC4 and HDAC5 into the nucleus in response to small molecule SIK inhibitors has been shown to suppress inflammatory cytokine production by deacetylation of NF-κB subunits and histone lysines near promoters of several pro-inflammatory cytokines (24). SIK2 is a centrosome kinase and has a role in bipolar mitotic spindle formation in some cancers (25). Elevated levels of SIK2 protein is present in approximately 30% of serous ovarian cancer relative to normal ovarian epithelium tissue (26). Suppressing SIK2 function by depleting SIK2 transcript with targeting siRNAs or inhibiting SIK2 function with a small molecule pan-SIK inhibitor disrupts mitosis of ovarian cancer cell lines and increases sensitivity to paclitaxel in cell culture and xenograft studies (25, 26). Additionally, SIK3 has been identified as a dependency for a subset of acute myeloid leukemias (AMLs) (27). AML lines that are susceptible to SIK3 knockout are driven by mixed lineage leukemia (MLL) fusion oncoproteins, which creates a dependency on the MEF2C transcription factor. SIK3 activity is required to maintain inhibitory phosphorylation on HDAC4 and HDAC5. When SIK3 activity is reduced, HDAC4 and HDAC5 are relieve of inhibitory phosphorylation resulting in suppression of MEF2C function. CRISPR/Cas9-based knockout of SIK3 or inhibiting SIK3 function with a small molecule pan- SIK inhibitor suppresses proliferation of MEF2C-dependent AMLs (27). BRIEF SUMMARY Accordingly, there is a need in the art for novel inhibitors of salt inducible kinases (SIKs). Small molecule inhibitors of SIKs, such as SIK1 and SIK2, are provided. In a general aspect, provided are small molecule inhibitors of salt inducible kinases (SIKs). 3 In an embodiment, provided is a compound of formula (I): armaceutically acceptable salt or solvate thereof, wherein: X ₁ , X ₂ , and X ₃ are independently N or CH; Q ₁ and Q ₂ are independently N or CH; Z is -O-Cn1H2n1-, or -NR ⁶ -(CH2)n2-, provided that O or N is directly bonded to the pyridinyl ring or phenyl ring or pyridazinyl ring; n1 is 0, 1 or 2, and 2n1 is twice of n1; n2 is 0 or 1; R ¹ is -C(O)R ⁵ , phenyl, a 5- to 6-membered heteroaryl having 1-3 nitrogen heteroat , wherein each of the phenyl and 5- to 6-membered heteroaryl is option ith one or more substituents independently selected from the group consisting of C ₁ -C ₄ alkyl, -F, C ₁ fluoroalkyl, C _1-4 hydroxyalkyl, -CON(R ⁸ ) ₂ , - COOR ¹³ , -C(O)R ⁹ , cyclopropyl, -CH2OCH3, -N(R ¹⁰ )2, -OCH3, -OCHF2, -SO2CH3, - SO2N(R ¹⁴ )2, and a 4- to 9-membered monocyclic having 1 to 2 heteroatoms independently selected from oxygen and nitrogen, wherein the C ₁ -C ₄ alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -F, -OH and morpholino, wherein the 5- to 6-membered heteroaryl is optionally fused to a ring selected from the group consisting of benzene, piperidine, piperazine, and a 5- to 6-membered heteroaryl having 1-2 nitrogen heteroatoms, wherein the 5- to 6-membered heteroaryl is optionally substituted with one or more -CH3; R ⁵ is cyclopropyl optionally substituted with one or more substituents independently selected from the group consisting of -F, -CH ₃ , C ₁ fluoroalkyl, and phenyl; 4

R ³ is hydrogen, -CH3, -CH2CH3, propynyl, C1 fluoroalkyl, -CH2OCH3, - COOCH2CH3, -CN, -Cl, -N(R ¹⁰ )2, or -OR ¹⁵ ; R ² is: a 4- to 9-membered monocyclic or bicyclic heterocyclyl having 1 to 3 heteroatoms independently selected from oxygen and nitrogen, wherein the 4- to 9-membered monocyclic or bicyclic heterocyclyl is optionally substituted with one or more substituents independently selected from the group consisting of C1-3 alkyl, C1-2 fluoroalkyl, C1-4 hydroxyalkyl, -CD3, - F, -OH, -OCH3, oxo, cyclopropyl, -COOR ⁸ , -CONH2, -C(O)CH3, -N(R ¹⁰ )2, -(CH ₂ ) _m OCH ₃ , -CN, -CH ₂ CN, -CH ₂ (C ₅ H ₄ N), -SO ₂ CH ₃ , and phenyl, a C3-C6 cycloalkyl, wherein the C3-C6 cycloalkyl is optionally substituted with one or more substituents independently selected from the group consisting of -CH ₃ , -F, -OH, -OCH ₃ , -N(R ¹² ) ₂ , -CH ₂ OH, -=O, phenyl, -CN, C ₁ fluoroalkyl, -CONH ₂ , =NH(OH), -SO ₂ CH ₃ , and - CH(CH3)2, a C _1-5 alkyl, wherein the C _1-5 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of - OH, -N(R ¹⁰ )2, C1 fluoroalkyl, -COOR8, -CON(R ⁸ )2, -CH3, C3-C6 cycloalkyl, phenyl, pyridyl, -SO2CH3, and -CN, wherein the C3-C6 cycloalkyl is optionally substituted with one or more -CH ₃ , a 5- to 6-membered heteroaryl having 1 to 2 nitrogen atoms, wherein the 5- to 6-membered heteroaryl is optionally substituted with one or more substituents independently selected from the group consisting of - CH3 and C1 fluoroalkyl, or phenyl, or phenyl substituted with -OCHF2, R ⁶ is hydrogen, or alternatively, when Z is -NR ⁶ -(CH ₂ ) _n2 - and n2 is 0, R ² and R ⁶ are taken together with the nitrogen atom to which they are attached to form a 4- to 8-membered monocyclic or bicyclic heterocyclyl having 1-2 nitrogen heteroatoms, wherein the 4- to 8-membered monocyclic or bicyclic heterocyclyl is optionally substituted with one or more substituents 5

independently selected from the group consisting of -OH, C1 fluoroalkyl, C1-3 hydroxyalkyl, -C(O)N(R ¹⁰ )2 and –CH2N(R ¹⁰ )2; each R ⁸ is independently hydrogen, cyclopropyl, tetrahydropyran, or C _1-4 alkyl, wherein the C _1-4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -OH, -OCH3, -F, tetrahydropyran, and -CN; each R ⁹ is independently C ₁ fluoroalkyl or -CH ₃ ; each R ¹⁰ is independently hydrogen, -COCH ₃ , -SO ₂ CH ₃ , C _1-2 alkyl, or C _1-2 fluoroalkyl; each R ¹¹ is independently hydrogen, C1-5 alkyl, -CH2CH2-OCHF2, cyclopropyl, or - CH ₂ -cyclopropyl; and each R ¹² is independently hydrogen, -CH3, C3H5, -SO2CH3, -CH2CN, -CH2(C6H5), -CH2COOCH2CH3, or a 5- to 6-membered heteroaryl having 1 to 2 nitrogen atoms; each R ¹³ is independently hydrogen or C _1-4 alkyl; each R ¹⁴ is independently cyclopropyl or C _1-4 alkyl; each R ¹⁵ is independently hydrogen or C1-4 alkyl, wherein the C1-4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -OH, -F, and -CN; and m is 1 or 2. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is -C(O)R ⁵ and R ⁵ is cyclopropyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is: triazolyl, pyrazolyl, pyrazinyl, pyridazinyl, pyrimidinyl, pyridinyl, pyrrolo[2,3- b]pyridinyl, imidazo[1,2-b]pyridazinyl, indazolyl, 4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazinyl, 5,6,7,8-tetrahydro-2,7-naphthyridinyl, or 5,6,7,8-tetrahydro-2,6-naphthyridinyl, wherein each of the triazolyl, pyrazolyl, pyrazinyl, pyridazinyl, pyrimidinyl, pyrrolo[2,3-b]pyridinyl, imidazo[1,2- b]pyridazinyl, indazolyl, 4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazinyl, 5,6,7,8-tetrahydro-2,7- naphthyridinyl, 5,6,7,8-tetrahydro-2,6-naphthyridinyl, and pyridinyl is optionally substituted with one or more substituents independently selected from the group consisting of -C(O)NHCH3, -F, - CH ₃ , -CH ₂ CH ₃ , -NHCH ₃ , -CHF ₂ , -C(O)CF ₃ , -CH ₂ C(OH)(CH ₃ ) ₂ , -CH(CH ₃ ) ₂ , C(CH ₃ ) ₃ , -C ₃ H ₅ , - 6 C(O)N(CH3)2, -CH2OCH3, -OCHF2, -CH(OH)CHCF3, -CO2H, -CO2CH3, -SO2CH3, -SO2N(CH3)2, , cyclopropyl, pyrrolidinyl, morpholino, and morpholinomethyl; , wherein R ¹¹ is hydrogen, -CH ₃ , -CH ₂ CH ₃ , -OCHF ₂ , cyclopropyl, or -CH ₂ - cyc phenyl, wherein the phenyl is optionally substituted with one or more substituents independently selected from the group consisting of -COOCH ₃ , -C(O)N(H)CH ₂ CH ₃ , - In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is: pharmaceutically acceptable salt or solvate thereof, wherein Z is -O-, -O-CH2-, -O-CH(CH3)-, or -O-CH2-CH2-. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is a 4- to 7-membered monocyclic heterocyclyl selected from the group consisting of pyrrolidinyl, piperidinyl, oxazepanyl, morpholinyl, azetidinyl, tetrahydrofuryl, tetrahydropyranyl, oxetanyl, and 1,1-dioxo-1,2,5- thiadiazolidinyl, wherein the 4- to 7-membered monocyclic heterocyclyl is optionally substituted with one or more substituents independently selected from the group consisting of -CH3, -CD3, - OCH3, -CH2CH3, -CH(CH3)2, -CH2CF3, -CF3, -CH2OH, -CH2C(OH)(CH3)2, -F, -OH, -NH2, -CN, oxo, cyclopropyl, -COOC(CH ₃ ) ₃ , -CONH _2, -C(O)CH ₃ , -CH ₂ CN, -CH ₂ CH ₂ OCH ₃ , -CH ₂ (C ₅ H ₄ N), -SO2CH3, and phenyl. 8 In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is a 6- to 9-membered bicyclic heterocyclyl selected from the group consisting of 2-aza-bicyclo[2.2.1]heptanyl, 8-aza- bicyclo[3.2.1]octanyl, 2-aza-spiro[3.3]heptanyl, 3-azabicyclo[2.2.2]octanyl, 3-oxa-9- azabicyclo[3.3.1]nonanyl, 2-oxa-5-azabicyclo[2.2.1]heptanyl, 7-oxa-2-azaspiro[3.5]nonanyl, 5- azaspiro[2.3]hexanyl, 2-oxaspiro[4.4]nonanyl, 6-oxaspiro[3.4]octanyl, and 1- oxaspiro[4.4]nonanyl, wherein the 6- to 9-membered bicyclic heterocyclyl is optionally substituted with one or more substituents independently selected from the group consisting of - CH3, -CD3, -CH2CH3, -CH(CH3)2, -CH2C(OH)(CH3)2, -COOC(CH3)3, -CN, -SO2CH3, oxo, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is a C3-C6 cycloalkyl, wherein the C ₃ -C ₆ cycloalkyl is optionally substituted with one or more substituents independently selected from the group consisting of -NH ₂ , -OH, -OCH ₃ , -CH ₂ OH, =O, , -CONH ₂ , phenyl, -CH ₃ , -CF ₃ , - F, -NHCH3, -NH(C3H5), -NHCH2CN, -NH-COOCH2CH3, -NH(C5H4N), -NH(C6H5), f formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is a C1-5 alkyl optionally substituted with one or more substituents independently selected from the group consisting of -N(CH ₃ ) ₂ , -OH, -CF ₃ , -NH ₂ , -COOC(CH ₃ ) ₃ , -NH-COCH ₃ , -NH-SO ₂ CH ₃ , -COONH _2, -COON(CH ₃ ) _2, cyclopropyl, methylcyclopropyl, -CH3, C3-C6 cycloalkyl, -SO2CH3, phenyl, pyridyl, and -CN. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, R ² is pyridinyl or pyrazolyl, wherein each of the pyridinyl and pyrazolyl is optionally substituted with one or more substituents independently selected from the group consisting of -CF3 and -CH3. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein: Z is -NR ⁶ -(CH2)n2; 9 n2 is 0; and R ² and R ⁶ are taken together to form a 4- to 8-membered monocyclic or bicyclic heterocyclyl selected from the group consisting of: , wherein the 4- to 8-membered monocyclic o ubstituted with one or more substituents independently selected from the group consisting -OH, -CH ₂ OH, -CH ₂ N(CH ₃ ) ₂ , - C(CH3)2OH, -CF3, and -C(O)NHCH3. In some embodiments, the compound of formula (I) is a compound of formula (I-A): harmaceutically acceptable salt or solvate thereof, wherein Z, Q ₁ , Q ₂ , R ¹ , R ² , and R ³ are defined above as in formula (I). In some embodiments, the compound of formula (I) is a compound of formula (I-B): armaceutically acceptable salt or solvate thereof, wherein Z, R ¹ , R ² , and R ³ are defined above as in formula (I). In particular embodiments, provided is a compound selected from the compounds of Examples 1-756 herein, or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof. In another aspect, provided is a pharmaceutical composition comprising a compound as describe herein or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, and a pharmaceutically acceptable carrier. 10

In another aspect, provided is a method of inhibiting a salt inducible kinase (SIK) in a subject in need thereof, the method comprising administering to the subject a pharmaceutical composition as described herein. In certain embodiment, the subject is in need of a treatment of a disease, disorder, or condition mediated by a SIK, such as an autoimmune disorder or a proliferative disorder. DETAILED DESCRIPTION Various publications, articles and patents are cited or described in the background and throughout the specification; each of these references is herein incorporated by reference in its entirety. Discussion of documents, acts, materials, devices, articles or the like which has been included in the present specification is for the purpose of providing context for the disclosure. Such discussion is not an admission that any or all of these matters form part of the prior art with respect to the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood to one of ordinary skill in the art to which this invention pertains. Otherwise, certain terms used herein have the meanings as set forth in the specification. All patents, published patent applications and publications cited herein are incorporated by reference as if set forth fully herein. It must be noted that as used herein and in the appended claims, the singular forms “a,” “an,” and “the” include plural reference unless the context clearly dictates otherwise. Unless otherwise indicated, the term “at least” preceding a series of elements is to be understood to refer to every element in the series. For example, the phrase “at least A, B, and C” means that each of A, B, and C is present. The term “at least one of” preceding a series of elements is to be understood to refer to a single element in the series or any combination of two or more elements in the series. For example, the phrase “at least one of A, B, and C” means that only A is present, only B is present, only C is present, both A and B are present, both A and C are present, both B and C are present, or each of A, B, and C is present. Depending on the context, “at least one of” preceding a series of elements can also encompass situations in which any one or more of the elements is present in greater than one instance, e.g., “at least one of A, B, and C” can also encompass situations in which A is present in duplicate alone or further in combination with any one or more of elements B and C. 11

As used herein, the conjunctive term “and/or” between multiple recited elements is understood as encompassing both individual and combined options. For instance, where two elements are conjoined by “and/or,” a first option refers to the applicability of the first element without the second. A second option refers to the applicability of the second element without the first. A third option refers to the applicability of the first and second elements together. Any one of these options is understood to fall within the meaning, and therefore satisfy the requirement of the term “and/or” as used herein. Concurrent applicability of more than one of the options is also understood to fall within the meaning, and therefore satisfy the requirement of the term “and/or.” Unless otherwise stated, any numerical value, such as a concentration or a concentration range described herein, are to be understood as being modified in all instances by the term “about.” Thus, a numerical value typically includes ± 10% of the recited value. For example, the recitation of “10-fold” includes 9-fold and 11-fold. As used herein, the use of a numerical range expressly includes all possible subranges, all individual numerical values within that range, including integers within such ranges and fractions of the values unless the context clearly indicates otherwise. As used herein, “subject” means any animal, such as a mammal, to whom will be or has been treated by a method described herein. The term “mammal” as used herein, encompasses any mammal. Examples of mammals include, but are not limited to, cows, horses, sheep, pigs, cats, dogs, mice, rats, rabbits, guinea pigs, and non-human primates (NHPs), such as monkeys or apes, humans, etc. The phrase “pharmaceutically acceptable salt(s)” means those salts of a compound of interest that are safe and effective for topical use in mammals and that possess the desired biological activity. Pharmaceutically acceptable salts include salts of acidic or basic groups present in the specified compounds. Pharmaceutically acceptable acid addition salts include, but are not limited to, hydrochloride, hydrobromide, hydroiodide, nitrate, sulfate, bisulfate, phosphate, acid phosphate, isonicotinate, carbonate, bicarbonate, acetate, lactate, salicylate, citrate, tartrate, propionate, butyrate, pyruvate, oxalate, malonate, pantothenate, bitartrate, ascorbate, succinate, maleate, gentisinate, fumarate, gluconate, glucaronate, saccharate, formate, benzoate, glutamate, methanesulfonate, ethanesulfonate, benzensulfonate, p-toluenesulfonate and pamoate (i.e., 1,1′- methylene-bis-(2-hydroxy-3-naphthoate)) salts. Certain compounds used in the application can form pharmaceutically acceptable salts with various amino acids. Suitable base salts include, but 12

are not limited to, aluminum, calcium, lithium, magnesium, potassium, sodium, zinc, bismuth, and diethanolamine salts. For a review on pharmaceutically acceptable salts see Berge et al., 66 J. Pharm. Sci. 1-19 (1977), incorporated herein by reference. As used herein, the term “alkyl” means a saturated, monovalent, unbranched or branched hydrocarbon chain. An alkyl group can be unsubstituted or substituted with one or more suitable substituents. Examples of alkyl groups include, but are not limited to, methyl (Me), ethyl (Et), propyl (e.g., n-propyl, isopropyl), butyl (e.g., n-butyl, isobutyl, tert-butyl), and pentyl (e.g., n- pentyl, isopentyl, neopentyl), etc. An alkyl group can have a specified number of carbon atoms. When numbers appear in a subscript after the symbol “C”, the subscript defines with more specificity the number of carbon atoms which that particular alkyl can contain. For example, “C ₁ to C10 alkyl” or “C1-10 alkyl” is intended to include alkyl groups having 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 carbon atoms. Additionally, for example, “C1 to C4 alkyl” or “C1-4 alkyl” denotes an alkyl having 1, 2, 3, or 4 carbon atoms. The term “cycloalkyl” refers to any stable monocyclic or polycyclic saturated hydrocarbon ring system. A cycloalkyl group can be unsubstituted or substituted with one or more suitable substituents. A cycloalkyl group can have a specified number of carbon atoms. For example, “C ₃ to C ₆ cycloalkyl” or “C _3-6 cycloalkyl” includes cycloalkyl groups having 3, 4, 5, or 6 ring carbon atoms, i.e., cyclopropyl, cyclobutyl, cyclopentyl, and cyclohexyl. Polycyclic cycloalkyls include bridged, fused, and spiro ring structures in which all ring atoms are carbon atoms. A “spiro ring” is a polycyclic ring system in which two rings share one carbon atom, referred to as the “spiro atom,” which is typically a quaternary carbon atom. A “fused ring” is a polycyclic ring system in which two rings share two adjacent atoms, referred to as “bridgehead atoms,” i.e., the two rings share one covalent bond such that the bridgehead atoms are directly connected. A “bridged ring” is a polycyclic ring system in which two rings share three or more atoms separating the bridgehead atoms by a bridge containing at least one atom. Examples of cycloalkyl groups include, but are not limited to, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, etc. The term “aryl” as used herein is a group that contains any carbon-based aromatic group including, but not limited to, phenyl, naphthyl, anthracenyl, phenanthranyl, and the like. Aryl moieties are well known and described, for example, in Lewis, R. J., ed., Hawley’s Condensed Chemical Dictionary, 13th Edition, John Wiley & Sons, Inc., New York (1997). An aryl group can be substituted or unsubstituted with one or more suitable substituents. An aryl group can 13

comprise a single ring structure (i.e., monocyclic) or multiple ring structures (i.e., polycyclic, e.g., bicyclic or tricyclic). For example, an aryl group can be a monocyclic aryl group, e.g., phenyl. The term “heterocyclyl” includes stable monocyclic and polycyclic hydrocarbons that contain at least one heteroatom ring member, such as sulfur, oxygen, or nitrogen, wherein the ring structure is saturated or partially unsaturated, provided the ring system is not fully aromatic. A heterocyclyl group can be unsubstituted, or substituted with one or more suitable substituents at any one or more of the carbon atom(s) and/or nitrogen heteroatom(s) of the heterocyclyl. A heterocyclyl can comprise a single ring structure (i.e., monocyclic) or multiple ring structures (i.e., polycyclic, e.g., bicyclic). Polycyclic heterocyclyls include bridged, fused, and spiro ring structures in which at least one ring atom of at least one of the rings of the polycyclic ring system is a heteroatom, for instance oxygen, nitrogen, or sulfur, wherein bridged, fused, and spiro rings are as defined above. A heterocyclyl ring can be attached to the parent molecule at any suitable heteroatom (typically nitrogen) or carbon atom of the ring. The term “4- to 9-membered monocyclic or bicyclic heterocyclyl” includes any four, five, six, seven, eight, or nine membered monocyclic or bicyclic ring structure containing at least one heteroatom ring member selected from oxygen, nitrogen, and sulfur, or independently selected from oxygen and nitrogen, optionally containing one to three additional heteroatoms independently selected from oxygen, nitrogen, and sulfur, or independently selected from oxygen and nitrogen, wherein the ring structure is saturated or partially unsaturated, provided the ring structure is not fully aromatic. In certain embodiments, the term “heterocyclyl” refers to 4-, 5-, 6-, or 7-membered monocyclic groups and 6-, 7-, 8-, or 9- membered bicyclic groups which have at least one heteroatom (O, S, or N) in at least one of the rings, wherein the heteroatom-containing ring(s) typically has 1, 2, or 3 heteroatoms, such as 1 or 2 heteroatoms, independently selected from O, S, and/or N, or independently selected from O and N. Examples of monocyclic heterocyclyl groups include, but are not limited to azetidinyl, oxetanyl, tetrahydrofuranyl, pyrrolidinyl, imidazolidinyl, pyrazolidinyl, oxazolidinyl, isoxazolidinyl, thiazolidinyl, isothiazolidinyl, dioxolanyl, dithiolanyl, piperidinyl, piperazinyl, dioxanyl, morpholinyl, azepanyl, oxepanyl, oxazepanyl (e.g., 1,4- oxazepanyl, 1,2-oxazepanyl) and the like. Examples of bicyclic heterocyclyl groups include, but are not limited to, 2-aza-bicyclo[2.2.1]heptanyl, 8-aza-bicyclo[3.2.1]octanyl, 2-aza- spiro[3.3]heptanyl, 3-azabicyclo[2.2.2]octanyl, 3-oxa-9-azabicyclo[3.3.1]nonanyl, 2-oxa-5- 14

azabicyclo[2.2.1]heptanyl, 7-oxa-2-azaspiro[3.5]nonanyl, and 5-azaspiro[2.3]hexanyl and the like. As used herein, the term “heteroaryl" includes stable monocyclic and polycyclic aromatic hydrocarbons that contain at least one heteroatom ring member such as sulfur, oxygen, or nitrogen. A heteroaryl group can be unsubstituted or substituted with one or more suitable substituents. A heteroaryl can comprise a single ring structure (i.e., monocyclic) or multiple ring structures (i.e., polycyclic, e.g., bicyclic or tricyclic). Each ring of a heteroaryl group containing a heteroatom can contain one or two oxygen or sulfur atoms and/or from one to four nitrogen atoms provided that the total number of heteroatoms in each ring is four or less and each ring has at least one carbon atom. Heteroaryl groups which are polycyclic, e.g., bicyclic or tricyclic must include at least one fully aromatic ring, but the other fused ring or rings can be aromatic or non-aromatic. For example, for a bicyclic heteroaryl, the fused rings completing the bicyclic group can contain only carbon atoms and can be saturated, partially saturated, or unsaturated. A heteroaryl can be attached to the parent molecule at any available nitrogen or carbon atom of any ring of the heteroaryl group. In some embodiments, the term “heteroaryl” refers to 5- or 6-membered monocyclic groups and 9- or 10-membered bicyclic groups which have at least one heteroatom (O, S, or N) in at least one of the rings, wherein the heteroatom-containing ring typically has 1, 2, or 3 heteroatoms, such as 1 or 2 heteroatoms, selected from O, S, and/or N. A heteroaryl group can be unsubstituted or substituted with one or more suitable substituents at any one or more of the carbon atom(s) and/or nitrogen heteroatom(s) of the heteroaryl. The nitrogen and sulfur heteroatom(s) of a heteroaryl can optionally be oxidized (i.e., N→O and S(O)r, wherein r is 0, 1 or 2). Exemplary monocyclic heteroaryl groups include, but are not limited to, pyrrolyl, pyrazolyl, pyrazolinyl, imidazolyl, oxazolyl, isoxazolyl, thiazolyl, thiadiazolyl, isothiazolyl, furanyl, thiophenyl, oxadiazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, and triazinyl. Exemplary bicyclic heteroaryl groups include, but are not limited to, indolyl, benzothiazolyl, benzodioxolyl, benzoxazolyl, benzothienyl, quinolinyl, tetrahydroisoquinolinyl, isoquinolinyl, benzimidazolyl, benzopyranyl, indolizinyl, benzofuranyl, chromonyl, coumarinyl, benzopyranyl, cinnolinyl, quinoxalinyl, indazolyl, pyrrolopyridinyl, furopyridinyl, dihydroisoindolyl, and tetrahydroquinolinyl. The term “alkoxy” as used herein refers to an –O-alkyl group, wherein alkyl is as defined above. An alkoxy group is attached to the parent molecule through a bond to an oxygen atom. An 15

alkoxy group can have a specified number of carbon atoms. For example, “C1 to C10 alkoxy” or “C1-10 alkoxy” is intended to include alkoxy groups having 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 carbon atoms. Additionally, for example, “C ₁ to C ₄ alkoxy” or “C _1-4 alkoxy” denotes an alkoxy having 1, 2, 3, or 4 carbon atoms. Examples of alkoxy include, but are not limited to, methoxy, ethoxy, propoxy (e.g., n-propoxy, isopropoxy), butoxy (e.g., n-butoxy, isobutoxy, tert-butoxy), pentyloxy (e.g., n-pentyloxy, isopentyloxy, neopentyloxy), etc. An alkoxy group can be unsubstituted or substituted with one or more suitable substituents. Similarly, “alkylthio” or “thioalkoxy” represents an alkyl group as defined above attached to the parent molecule through a bond to a sulfur atom, for example, -S-methyl, -S-ethyl, etc. Representative examples of alkylthio include, but are not limited to, -SCH ₃ , -SCH ₂ CH ₃ , etc. As used herein, the term “halogen” means fluorine, chlorine, bromine, or iodine. Correspondingly, the term “halo” means fluoro, chloro, bromo, and iodo. “Haloalkyl” is intended to include both branched and straight-chain saturated aliphatic hydrocarbon radicals substituted with one or more halogen atoms. “Fluorinated alkyl” or “fluoroalkyl” in particular refers to any alkyl group as defined above substituted with at least one fluoro atom, e.g., one to three fluoro atoms, such as one, two, or three fluoroatoms. Examples of haloalkyl include, but are not limited to, fluoromethyl, difluoromethyl, trifluoromethyl, chloromethyl, dichloromethyl, trichloromethyl, pentafluoroethyl, pentachloroethyl, 2,2,2- trifluoroethyl, heptafluoropropyl, and heptachloropropyl. Suitable examples of fluoroalkyl in particular include, but are not limited to, -CF ₃ , -CHF ₂ , -CH ₂ F, -CH ₂ CF ₃ , -CF ₂ CF ₃ , and the like. The terms “hydroxy” and “hydroxyl” can be used interchangeably, and refer to –OH. The term “carboxy” refers to –COOH. The term “ester” refers to -COOR, wherein R is alkyl as defined above. The term “cyano” refers to –CN. The term “oxo” refers to a double bonded oxygen group, i.e., a substituent group of the formula =O. The term “keto” refers to -C(O)R, wherein R is alkyl as defined above. The term “amino” refers to –NH2. One or more hydrogen atoms of an amino group can be replaced by a substituent such as an alkyl group, which is referred to as an “alkylamino.” Alkylamino groups have one or both hydrogen atoms of an amino group replaced with an alkyl group and is attached to the parent molecule through a bond to the nitrogen atom of the alkylamino 16

group. For example, alkylamino includes methylamino (-NHCH3), dimethylamino (-N(CH3)2), - NHCH2CH3 and the like. The term “aminoalkyl” as used herein is intended to include both branched and straight- chain saturated aliphatic hydrocarbon groups substituted with one or more amino groups. For example, “C1-4 aminoalkyl” is intended to include alkyl groups having 1, 2, 3, or 4 carbon atoms substituted with one or more amino groups. Aminoalkyl groups are attached to the parent molecule through a bond to a carbon atom of the alkyl moiety of the aminoalkyl group. Representative examples of aminoalkyl groups include, but are not limited to, -CH2NH2, -CH2CH2NH2, and – CH2CH(NH2)CH3. As used herein, “amido” refers to –C(O)N(R) ₂ , wherein each R is independently an alkyl group (including both branched and straight-chain alkyl groups) or a hydrogen atom. Examples of amido groups include, but are not limited to, -C(O)NH2, -C(O)NHCH3, and –C(O)N(CH3)2. The terms “hydroxylalkyl” and “hydroxyalkyl” are used interchangeably, and refer to a branched or straight-chain aliphatic hydrocarbon group substituted with one or more hydroxyl groups. Hydroxyalkyl groups are attached to the parent molecule through a bond to a carbon atom of the alkyl moiety of the hydroxyalkyl group. A hydroxyalkyl group can have a specified number of carbon atoms. For example, “C ₁ to C ₁₀ hydroxyalkyl” or “C _1-10 hydroxyalkyl” is intended to include hydroxyalkyl groups having 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 carbon atoms. Additionally, for example, “C1 to C4 hydroxylalkyl” or “C1-4 hydroxyalkyl” denotes a hydroxyalkyl group having 1, 2, 3, or 4 carbon atoms. Examples of hydroxyalkyl include, but are not limited to, hydroxylmethyl (-CH2OH), hydroxylethyl (-CH2CH2OH), etc. In accordance with convention used in the art: is used structural formulas herein to depict the bond that is the point of attachment of a group, moiety or substituent to the core, backbone, or parent molecule structure. When a bond to a substituent is shown to cross a bond connecting two atoms in a ring, then such substituent can be bonded to any atom on the ring. The term “substituted” as used herein with respect to any organic radical (e.g., alkyl, cycloalkyl, heteroaryl, aryl, heterocyclyl, etc.) means that at least one hydrogen atom is replaced with a non-hydrogen group, provided that all normal valencies are maintained and that the 17

substitution results in a stable compound. When a particular group is “substituted,” that group can have one or more substituents, such as from one to five substituents, one to three substituents, or one to two substituents, independently selected from the list of substituents. The term “independently” when used in reference to substituents, means that when more than one of such substituents is possible, such substituents can be the same or different from each other. Examples of suitable substituents include, but are not limited to, alkyl, halo, haloalkyl, alkoxy, amido, hydroxy, hydroxyalkyl, amino, carboxyl, ester, oxo, cyano and the like. When any variable occurs more than one time in any constituent or formula for a compound, its definition at each occurrence is independent of its definition at every other occurrence. Thus, for example, if a group is shown to be substituted with 0-3 R groups, then said group can be optionally substituted with up to three R groups, and at each occurrence, R is selected independently from the definition of R. The terms “optional” or “optionally” mean that the event or circumstance described subsequently can, but need not, occur, and such a description includes the situation in which the event or circumstance does or does not occur. For example, “optionally substituted heterocyclyl” means that a substituent group can be, but need not be, present, and such a description includes the situation of the heterocyclyl group being substituted by a suitable substituent and the heterocyclyl group not being substituted by any substituent. One skilled in the art will recognize that in certain embodiments compounds described herein can have one or more asymmetric carbon atoms in their structure. As used herein, any chemical formulas with bonds shown only as solid lines and not as solid wedged or hashed wedged bonds, or otherwise indicated as having a particular configuration (e.g., R or S) around one or more atoms, contemplates each possible stereoisomer, or mixture of two or more stereoisomers. Stereoisomers includes enantiomers and diastereomers. Enantiomers are stereoisomers that are non-super-imposable mirror images of each other. A 1:1 mixture of a pair of enantiomers is a racemate or racemic mixture. Diastereomers (or diastereoisomers) are stereoisomers that are not enantiomers, i.e., they are not related as mirror images, and occur when two or more stereoisomers of a compound have different configurations at one or more of the equivalent stereocenters and are not mirror images of each other. Substituent groups (e.g., alkyl, heterocyclyl, etc.) can contain stereocenters in either the R or S configuration. 18

Thus, included within the scope of the application are the stereochemically pure isomeric forms of the compounds described herein (i.e., a single enantiomer or a single diastereomer) as well as mixtures thereof including their racemates. When a specific stereoisomer is identified, this means that the stereoisomer is substantially free, i.e., associated with less than 50%, less than 20%, less than 5%, and in particular less than 2% or less than 1% of the other stereoisomers. For example, when a compound is for instance specified as (R), this means that the compound is substantially free of the (S) isomer. Compounds described herein can be used as racemic mixtures, enantiomerically or diastereomerically enriched mixtures, or as enantiomerically or diastereomerically pure individual stereoisomers. Certain examples contain chemical structures that comprise (*R) or (*S) terminology. When (*R) or (*S) is used in the name of a compound or in the chemical representation of the compound, it is intended to mean that the compound is a single isomer at that stereocenter, however absolute configuration of that stereocenter has not been established. Thus, a compound designated as (*R) refers to a compound that is a single isomer at that stereocenter with an absolute configuration of either (R) or (S). A compound designated as (*S) refers to a compound that is a single isomer at that stereocenter with an absolute configuration of either (R) or (S). In cases where the absolute stereochemistry has been established, the structures are named using (R) or (S). The use of the term (R,S) or “racemic” or “rac” in the name of the compound indicates that the compound is a racemate. Stereochemically pure isomeric forms can be obtained by techniques known in the art in view of the present disclosure. For example, diastereoisomers can be separated by physical separation methods such as fractional crystallization and chromatographic techniques, and enantiomers can be separated from each other by the selective crystallization of the diastereomeric salts with optically active acids or bases or by chiral chromatography. Pure stereoisomers can also be prepared synthetically from appropriate stereochemically pure starting materials, or by using stereoselective reactions. Compounds described herein can also form tautomers. The term “tautomer” refers to compounds that are interchangeable forms of a particular compound structure and that vary in the displacement of hydrogen atoms and electrons. Tautomers are constitutional isomers of chemical compounds that readily interconvert, usually resulting in relocation of a proton (hydrogen). Thus, 19

two structures can be in equilibrium through the movement of pi electrons and an atom (usually hydrogen). All tautomeric forms and mixtures of tautomers of the compounds described herein are included with the scope of the application. Compounds described herein can exist in solvated and unsolvated forms. The term “solvate” means a physical association, e.g., by hydrogen bonding, of a compound of the application with one or more solvent molecules. The solvent molecules in the solvate can be present in a regular arrangement and/or a non-ordered arrangement. The solvate can comprise either a stoichiometric or nonstoichiometric amount of the solvent molecules. “Solvate” encompasses both solution-phase and isolable solvates. Compounds of the application can form solvates with water (i.e., hydrates) or common organic solvents. Exemplary solvates include, but are not limited to, hydrates, ethanolates, methanolates, and isopropanolates. Methods of solvation are generally known in the art. Also included within the scope of the application are all isotopes of atoms occurring in the compounds described herein. Isotopes include those atoms having the same atomic number but different mass numbers. By way of general example and without limitation, isotopes of hydrogen include deuterium and tritium. Isotopes of carbon include ¹³ C and ¹⁴ C. Isotopically-labeled compounds can generally be prepared by conventional techniques known to those skilled in the art or by processes analogous to those described herein, using an appropriate isotopically-labeled reagent in place of the non-labeled reagent otherwise employed. As used herein, the name of a compound is intended to encompass all possible existing isomeric forms, including stereoisomers (e.g., enantiomers, diastereomers, racemate or racemic mixture, and any mixture thereof) of the compound. Compounds In one general aspect, provided herein are compounds having a pyrazolopyridine core and which are inhibitors of salt inducible kinases (SIKs). In one embodiment, provided herein is a compound of formula (I): 0 or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein: X1, X2, and X3 are independently N or CH; Q ₁ and Q ₂ are independently N or CH; Z is -O-C _n1 H _2n1 -, or -NR ⁶ -(CH ₂ ) _n2 -, provided that O or N is directly bonded to the pyridinyl ring or phenyl ring or pyridazinyl ring; n1 is 0, 1 or 2, and 2n1 is twice of n1; n2 is 0 or 1; R ¹ is -C(O)R ⁵ , phenyl, a 5- to 6-membered heteroaryl having 1-3 nitrogen heteroatoms, o , wherein each of the phenyl and 5- to 6-membered heteroaryl is optionally ith one or more substituents independently selected from the group consisting of C ₁ -C ₄ alkyl, -F, C ₁ fluoroalkyl, C _1-4 hydroxyalkyl, -CON(R ⁸ ) ₂ , - COOR ¹³ , -C(O)R ⁹ , cyclopropyl, -CH ₂ OCH ₃ , -N(R ¹⁰ ) ₂ , -OCH ₃ , -OCHF ₂ , -SO ₂ CH ₃ , - SO2N(R ¹⁴ )2, and a 4- to 9-membered monocyclic having 1 to 2 heteroatoms independently selected from oxygen and nitrogen, wherein the C ₁ -C ₄ alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -F, -OH and morpholino, wherein the 5- to 6-membered heteroaryl is optionally fused to a ring selected from the group consisting of benzene, piperidine, piperazine, and a 5- to 6-membered heteroaryl having 1-2 nitrogen heteroatoms, wherein the 5- to 6-membered heteroaryl is optionally substituted with one or more -CH3; R ⁵ is cyclopropyl optionally substituted with one or more substituents independently selected from the group consisting of -F, -CH ₃ , C ₁ fluoroalkyl, and phenyl; R ³ is hydrogen, -CH ₃ , -CH ₂ CH ₃ , propynyl, C ₁ fluoroalkyl, -CH ₂ OCH ₃ , - COOCH2CH3, -CN, -Cl, -N(R ¹⁰ )2, or -OR ¹⁵ ; R ² is: a 4- to 9-membered monocyclic or bicyclic heterocyclyl having 1 to 3 heteroatoms independently selected from oxygen and nitrogen, wherein the 4- to 9-membered monocyclic or bicyclic heterocyclyl is optionally substituted with one or more substituents independently selected from the 21

group consisting of C1-3 alkyl, C1-2 fluoroalkyl, C1-4 hydroxyalkyl, -CD3, - F, -OH, -OCH3, oxo, cyclopropyl, -COOR ⁸ , -CONH2, -C(O)CH3, -N(R ¹⁰ )2, -(CH ₂ ) _m OCH ₃ , -CN, -CH ₂ CN, -CH ₂ (C ₅ H ₄ N), -SO ₂ CH ₃ , and phenyl, a C ₃ -C ₆ cycloalkyl, wherein the C ₃ -C ₆ cycloalkyl is optionally substituted with one or more substituents independently selected from the group consisting of -CH ₃ , -F, -OH, -OCH ₃ , -N(R ¹² ) ₂ , -CH ₂ OH, -=O, phenyl, -CN, C ₁ fluoroalkyl, -CONH ₂ , =NH(OH), -SO ₂ CH ₃ , and - CH(CH3)2, a C1-5 alkyl, wherein the C1-5 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of - OH, -N(R ¹⁰ )2, C1 fluoroalkyl, -COOR8, -CON(R ⁸ )2, -CH3, C3-C6 cycloalkyl, phenyl, pyridyl, -SO2CH3, and -CN, wherein the C3-C6 cycloalkyl is optionally substituted with one or more -CH ₃ , a 5- to 6-membered heteroaryl having 1 to 2 nitrogen atoms, wherein the 5- to 6-membered heteroaryl is optionally substituted with one or more substituents independently selected from the group consisting of - CH ₃ and C ₁ fluoroalkyl, or phenyl, or phenyl substituted with -OCHF2; R ⁶ is hydrogen, or alternatively, when Z is -NR ⁶ -(CH ₂ ) _n2 - and n2 is 0, R ² and R ⁶ are taken together with the nitrogen atom to which they are attached to form a 4- to 8-membered monocyclic or bicyclic heterocyclyl having 1-2 nitrogen heteroatoms, wherein the 4- to 8-membered monocyclic or bicyclic heterocyclyl is optionally substituted with one or more substituents independently selected from the group consisting of -OH, C1 fluoroalkyl, C1-3 hydroxyalkyl, -C(O)N(R ¹⁰ )2 and –CH2N(R ¹⁰ )2; each R ⁸ is independently hydrogen, cyclopropyl, tetrahydropyran, or C _1-4 alkyl, wherein the C _1-4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -OH, -OCH3, -F, tetrahydropyran, and -CN; each R ⁹ is independently C1 fluoroalkyl or -CH3; each R ¹⁰ is independently hydrogen, -COCH ₃ , -SO ₂ CH ₃ , C _1-2 alkyl, or C _1-2 fluoroalkyl; 22 each R ¹¹ is independently hydrogen, C1-5 alkyl, -CH2CH2-OCHF2, cyclopropyl, or -CH2-cyclopropyl; and each R ¹² is independently hydrogen, -CH _3, C ₃ H ₅ , -SO ₂ CH ₃ , -CH ₂ CN, -CH ₂ (C ₆ H ₅ ), -CH ₂ COOCH ₂ CH ₃ , or a 5- to 6-membered heteroaryl having 1 to 2 nitrogen atoms; each R ¹³ is independently hydrogen or C1-4 alkyl; each R ¹⁴ is independently cyclopropyl or C _1-4 alkyl; each R ¹⁵ is independently hydrogen or C _1-4 alkyl, wherein the C _1-4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -OH, -F, and -CN; and m is 1 or 2. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is phenyl optionally substituted with one or more substituents independently selected from the group consisting of C ₁ -C ₄ alkyl, - F, C1 fluoroalkyl, C1-4 hydroxyalkyl, -CON(R ⁸ )2, COOR ¹³ , -OCHF2, -C(O)R ⁹ , and SO2N(R ¹⁴ )2; each R ⁸ is independently hydrogen, cyclopropyl, or C _1-4 alkyl, wherein the C _1-4 alkyl is optionally substituted with one or more -F; each R ⁹ is independently C ₁ fluoroalkyl; each R ¹³ is independently hydrogen or C1-4 alkyl; and each R ¹⁴ is independently cyclopropyl or C1-4 alkyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is phenyl optionally substituted pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is -C(O)R ⁵ , and R ⁵ is cyclopropyl optionally substituted with one or more substituents independently selected from the group consisting of -F, -CH3, C1 fluoroalkyl, and phenyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is -C(O)R ⁵ , and R ⁵ is cyclopropyl. 23

In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is -C(O)R ⁵ , and R ⁵ is cyclopropyl substituted with 1-2 fluoro atoms. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is -C(O)R ⁵ , and R ⁵ is cyclopropyl substituted with -CH ₃ . In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is -C(O)R ⁵ , and R ⁵ is cyclopropyl substituted with -CF3. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is -C(O)R ⁵ , and R ⁵ is cyclopropyl substituted with phenyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is a 5- to 6-membered heteroaryl having 1-3 nitrogen heteroatoms optionally substituted with one or more substituents independently selected from the group consisting of C ₁ -C ₄ alkyl, -F, C ₁ fluoroalkyl, C _1-4 hydroxyalkyl, -CON(R ⁸ ) ₂ , -COOR ¹³ , -C(O)R ⁹ , cyclopropyl, -CH ₂ OCH ₃ , -N(R ¹⁰ ) ₂ , -OCH ₃ , - OCHF2, -SO2CH3, -SO2N(R ¹⁴ )2, and a 4- to 9-membered monocyclic having 1 to 2 heteroatoms independently selected from oxygen and nitrogen, wherein the C1-C4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -F, -OH and morpholino, wherein the 5- to 6-membered heteroaryl is optionally fused to a ring selected from the group consisting of benzene, piperidine, piperazine, and a 5- to 6-membered heteroaryl having 1-2 nitrogen heteroatoms, wherein the 5- to 6-membered heteroaryl is optionally substituted with one or more -CH3; each R ⁸ is independently hydrogen, cyclopropyl, tetrahydropyran, or C1-4 alkyl, wherein the C1-4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -OH, -OCH ₃ , -F, tetrahydropyran, and -CN; each R ⁹ is independently C ₁ fluoroalkyl or -CH _3; each R ¹⁰ is independently hydrogen, -COCH ₃ , -SO ₂ CH ₃ , C1-2 alkyl, or C1-2 fluoroalkyl; each R ¹³ is independently hydrogen or C1-4 alkyl; and each R ¹⁴ is independently cyclopropyl or C1-4 alkyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is a 5- to 6-membered heteroaryl 24 having 1-3 nitrogen heteroatoms optionally substituted with one or more substituents independently selected from the group consisting of C1-C4 alkyl, -F, C1 fluoroalkyl, C1-4 hydroxyalkyl, -CON(R ⁸ ) ₂ , -COOR ¹³ , -C(O)R ⁹ , cyclopropyl, -CH ₂ OCH ₃ , -N(R ¹⁰ ) ₂ , -OCH ₃ , - OCHF ₂ , -SO ₂ CH ₃ , -SO ₂ N(R ¹⁴ ) ₂ , and a 4- to 9-membered monocyclic having 1 to 2 heteroatoms independently selected from oxygen and nitrogen, wherein the C1-C4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -F, -OH and morpholino; each R ⁸ is independently hydrogen, cyclopropyl, tetrahydropyran, or C _1-4 alkyl, wherein the C1-4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -OH, -OCH3, -F, tetrahydropyran, and -CN, wherein the C1- ₄ alkyl is optionally substituted with one or more -F; each R ⁹ is independently C ₁ fluoroalkyl or - CH3; each R ¹⁰ is independently hydrogen, -COCH3, -SO2CH3, C1-2 alkyl, or C1-2 fluoroalkyl; each R ¹³ is independently hydrogen or C1-4 alkyl; and each R ¹⁴ is independently cyclopropyl or C1-4 alkyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ i , wherein R ¹¹ is hydrogen, -CH ₃ , -CH ₂ CH ₃ , -CH ₂ CH ₂ -OCHF ₂ , cyclopropyl, or -CH yl. In some embodiments, provided is a compound of formula ( I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is a 5- to 6-membered heteroaryl having 1-3 nitrogen heteroatoms optionally substituted with one or more substituents independently selected from the group consisting of C ₁ -C ₄ alkyl, -F, C ₁ fluoroalkyl, C _1-4 hydroxyalkyl, -CON(R ⁸ )2, -COOR ¹³ , -C(O)R ⁹ , cyclopropyl, -CH2OCH3, -N(R ¹⁰ )2, -OCH3, - OCHF2, -SO2CH3, -SO2N(R ¹⁴ )2, and a 4- to 9-membered monocyclic having 1 to 2 heteroatoms independently selected from oxygen and nitrogen, wherein the C ₁ -C ₄ alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -F, -OH and morpholino, wherein the 5- to 6-membered heteroaryl is fused to a ring selected from the group consisting of benzene, piperidine, piperazine, and a 5- to 6-membered heteroaryl having 1-2 nitrogen heteroatoms, wherein the 5- to 6-membered heteroaryl is optionally substituted with one or more -CH3; each R ⁸ is independently hydrogen, cyclopropyl, tetrahydropyran, or C1-4 alkyl, 25 wherein the C1-4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -OH, -OCH3, -F, tetrahydropyran, and -CN; each R ⁹ is independently C ₁ fluoroalkyl or -CH _3; each R ¹⁰ is independently hydrogen, -COCH ₃ , -SO ₂ CH ₃ , C _1-2 alkyl, or C _1-2 fluoroalkyl; each R ¹³ is independently hydrogen or C _1-4 alkyl; and each R ¹⁴ is independently cyclopropyl or C1-4 alkyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is indazolyl, 4,5,6,7- tetrahydropyrazolo[1,5-a]pyrazinyl, 5,6,7,8-tetrahydro-2,7-naphthyridinyl, 5,6,7,8-tetrahydro- 2,6-naphthyridinyl, pyrrolo[2,3-b]pyridinyl or imidazo[1,2-b]pyridazinyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is triazolyl optionally substituted with one or more substituents independently selected from the group consisting of C1-C4 alkyl, - F, C ₁ fluoroalkyl, C _1-4 hydroxyalkyl, -CON(R ⁸ ) ₂ , -COOR ¹³ , -C(O)R ⁹ , cyclopropyl, -CH ₂ OCH ₃ , - N(R ¹⁰ ) ₂ , -OCH ₃ , -OCHF ₂ , -SO ₂ CH ₃ , -SO ₂ N(R ¹⁴ ) ₂ , and a 4- to 9-membered monocyclic having 1 to 2 heteroatoms independently selected from oxygen and nitrogen, wherein the C1-C4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -F, -OH and morpholino _; each R ⁸ is independently hydrogen, cyclopropyl, tetrahydropyran, or C1-4 alkyl, wherein the C1-4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -OH, -OCH3, -F, tetrahydropyran, and -CN; each R ⁹ is independently C ₁ fluoroalkyl or -CH _3; each R ¹⁰ is independently hydrogen, - COCH3, -SO2CH3, C1-2 alkyl, or C1-2 fluoroalkyl; each R ¹³ is independently hydrogen or C1-4 alkyl; and each R ¹⁴ is independently cyclopropyl or C1-4 alkyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is triazolyl optionally substituted with one or more substituents independently selected from the group consisting of -C(O)NHCH3, -F, -CH ₃ , -CH ₂ CH ₃ , -NHCH ₃ , -CHF ₂ , -C(O)CF ₃ , -CH ₂ C(OH)(CH ₃ ) ₂ , -CH(CH ₃ ) ₂ , C(CH ₃ ) ₃ , -C ₃ H ₅ , -C(O)N(CH ₃ ) ₂ , -CH ₂ OCH ₃ , -OCHF ₂ , -CH(OH)CHCF ₃ , -CO ₂ H, -CO ₂ CH ₃ , -SO ₂ CH ₃ , - SO2N(CH3) , cyclopropyl, pyrrolidinyl, morpholino, and morpholinomethyl. 26

In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is pyrazolyl optionally substituted with one or more substituents independently selected from the group consisting of C ₁ -C ₄ alkyl, - F, C ₁ fluoroalkyl, C _1-4 hydroxyalkyl, -CON(R ⁸ ) ₂ , -COOR ¹³ , -C(O)R ⁹ , cyclopropyl, -CH ₂ OCH ₃ , - N(R ¹⁰ )2, -OCH3, -OCHF2, -SO2CH3, -SO2N(R ¹⁴ )2, and a 4- to 9-membered monocyclic having 1 to 2 heteroatoms independently selected from oxygen and nitrogen, wherein the C ₁ -C ₄ alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -F, -OH and morpholino; each R ⁸ is independently hydrogen, cyclopropyl, tetrahydropyran, or C1-4 alkyl, wherein the C1-4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -OH, -OCH ₃ , -F, tetrahydropyran, and -CN; each R ⁹ is independently C1 fluoroalkyl or -CH3; each R ¹⁰ is independently hydrogen, - COCH3, -SO2CH3, C1-2 alkyl, or C1-2 fluoroalkyl; each R ¹³ is independently hydrogen or C1-4 alkyl; and each R ¹⁴ is independently cyclopropyl or C _1-4 alkyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is pyrazolyl optionally substituted with one or more substituents independently selected from the group consisting of -C(O)NHCH ₃ , -F, -CH ₃ , -CH ₂ CH ₃ , -NHCH ₃ , -CHF ₂ , -C(O)CF ₃ , -CH ₂ C(OH)(CH ₃ ) ₂ , -CH(CH ₃ ) ₂ , C(CH ₃ ) ₃ , -C ₃ H ₅ , -C(O)N(CH3)2, -CH2OCH3, -OCHF2, -CH(OH)CHCF3, -CO2H, -CO2CH3, -SO2CH3, - SO ₂ N(CH ₃ ) , cyclopropyl, pyrrolidinyl, morpholino, and morpholinomethyl. In s diments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is pyridinyl optionally substituted with one or more substituents independently selected from the group consisting of C ₁ -C ₄ alkyl, - F, C ₁ fluoroalkyl, C _1-4 hydroxyalkyl, -CON(R ⁸ ) ₂ , -COOR ¹³ , -C(O)R ⁹ , cyclopropyl, -CH ₂ OCH ₃ , - N(R ¹⁰ )2, -OCH3, -OCHF2, -SO2CH3, -SO2N(R ¹⁴ )2, and a 4- to 9-membered monocyclic having 1 to 2 heteroatoms independently selected from oxygen and nitrogen, wherein the C ₁ -C ₄ alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -F, -OH and morpholino; each R ⁸ is independently hydrogen, cyclopropyl, tetrahydropyran, or C1-4 alkyl, wherein the C1-4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -OH, -OCH ₃ , -F, tetrahydropyran, 27 and -CN; each R ⁹ is independently C1 fluoroalkyl or -CH3; each R ¹⁰ is independently hydrogen, - COCH3, -SO2CH3, C1-2 alkyl, or C1-2 fluoroalkyl; each R ¹³ is independently hydrogen or C1-4 alkyl; and each R ¹⁴ is independently cyclopropyl or C _1-4 alkyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is pyridinyl optionally substituted with one or more substituents independently selected from the group consisting of -C(O)NHCH ₃ , -F, -CH ₃ , -CH ₂ CH ₃ , -NHCH ₃ , -CHF ₂ , -C(O)CF ₃ , -CH ₂ C(OH)(CH ₃ ) ₂ , -CH(CH ₃ ) ₂ , C(CH ₃ ) ₃ , -C ₃ H ₅ , -C(O)N(CH3)2, -CH2OCH3, -OCHF2, -CH(OH)CHCF3, -CO2H, -CO2CH3, -SO2CH3, - SO ₂ N(CH ₃ , cyclopropyl, pyrrolidinyl, morpholino, and morpholinomethyl. In s iments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceu tically acceptable salt or solvate thereof, wherein R ¹ is pyrazinyl optionally substituted with one or more substituents independently selected from the group consisting of C ₁ -C ₄ alkyl, - F, C ₁ fluoroalkyl, C _1-4 hydroxyalkyl, -CON(R ⁸ ) ₂ , -COOR ¹³ , -C(O)R ⁹ , cyclopropyl, -CH ₂ OCH ₃ , - N(R ¹⁰ )2, -OCH3, -OCHF2, -SO2CH3, -SO2N(R ¹⁴ )2, and a 4- to 9-membered monocyclic having 1 to 2 heteroatoms independently selected from oxygen and nitrogen, wherein the C1-C4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -F, -OH and morpholino; each R ⁸ is independently hydrogen, cyclopropyl, tetrahydropyran, or C1-4 alkyl, wherein the C1-4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -OH, -OCH ₃ , -F, tetrahydropyran, and -CN; each R ⁹ is independently C ₁ fluoroalkyl or -CH _3; each R ¹⁰ is independently hydrogen, - COCH3, -SO2CH3, C1-2 alkyl, or C1-2 fluoroalkyl; each R ¹³ is independently hydrogen or C1-4 alkyl; and each R ¹⁴ is independently cyclopropyl or C _1-4 alkyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is pyrazinyl optionally substituted with one or more substituents independently selected from the group consisting of -C(O)NHCH ₃ , -F, -CH ₃ , -CH ₂ CH ₃ , -NHCH ₃ , -CHF ₂ , -C(O)CF ₃ , -CH ₂ C(OH)(CH ₃ ) ₂ , -CH(CH ₃ ) ₂ , C(CH ₃ ) ₃ , -C ₃ H ₅ , -C(O)N(CH3)2, -CH2OCH3, -OCHF2, -CH(OH)CHCF3, -CO2H, -CO2CH3, -SO2CH3, - SO ₂ N(CH ₃ ) _2, , cyclopropyl, pyrrolidinyl, morpholino, and morpholinomethyl. 28

In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is pyrimidinyl optionally substituted with one or more substituents independently selected from the group consisting of C ₁ - C ₄ alkyl, -F, C ₁ fluoroalkyl, C _1-4 hydroxyalkyl, -CON(R ⁸ ) ₂ , -COOR ¹³ , -C(O)R ⁹ , cyclopropyl, - CH2OCH3, -N(R ¹⁰ )2, -OCH3, -OCHF2, -SO2CH3, -SO2N(R ¹⁴ )2, and a 4- to 9-membered monocyclic having 1 to 2 heteroatoms independently selected from oxygen and nitrogen, wherein the C ₁ -C ₄ alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -F, -OH and morpholino; each R ⁸ is independently hydrogen, cyclopropyl, tetrahydropyran, or C1-4 alkyl, wherein the C1-4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -OH, -OCH ₃ , -F, tetrahydropyran, and -CN; each R ⁹ is independently C1 fluoroalkyl or -CH3; each R ¹⁰ is independently hydrogen, - COCH3, -SO2CH3, C1-2 alkyl, or C1-2 fluoroalkyl; each R ¹³ is independently hydrogen or C1-4 alkyl; and each R ¹⁴ is independently cyclopropyl or C _1-4 alkyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is pyrimidinyl optionally substituted with one or more substituents independently selected from the group consisting of - C(O)NHCH ₃ , -F, -CH ₃ , -CH ₂ CH ₃ , -NHCH ₃ , -CHF ₂ , -C(O)CF ₃ , -CH ₂ C(OH)(CH ₃ ) ₂ , -CH(CH ₃ ) ₂ , C(CH3)3, -C3H5, -C(O)N(CH3)2, -CH2OCH3, -OCHF2, -CH(OH)CHCF3, -CO2H, -CO2CH3, - SO ₂ CH ₃ , -SO ₂ N(CH ₃ ) _2, , cyclopropyl, pyrrolidinyl, morpholino, and morpholinomethyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is pyridazinyl optionally substituted with one or more substituents independently selected from the group consisting of C ₁ - C ₄ alkyl, -F, C ₁ fluoroalkyl, C _1-4 hydroxyalkyl, -CON(R ⁸ ) ₂ , -COOR ¹³ , -C(O)R ⁹ , cyclopropyl, - CH2OCH3, -N(R ¹⁰ )2, -OCH3, -OCHF2, -SO2CH3, -SO2N(R ¹⁴ )2, and a 4- to 9-membered monocyclic having 1 to 2 heteroatoms independently selected from oxygen and nitrogen, wherein the C ₁ -C ₄ alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -F, -OH and morpholino; each R ⁸ is independently hydrogen, cyclopropyl, tetrahydropyran, or C1-4 alkyl, wherein the C1-4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -OH, -OCH ₃ , -F, tetrahydropyran, 29 and -CN; each R ⁹ is independently C1 fluoroalkyl or -CH3; each R ¹⁰ is independently hydrogen, - COCH3, -SO2CH3, C1-2 alkyl, or C1-2 fluoroalkyl; each R ¹³ is independently hydrogen or C1-4 alkyl; and each R ¹⁴ is independently cyclopropyl or C _1-4 alkyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is pyridazinyl optionally substituted with one or more substituents independently selected from the group consisting of - C(O)NHCH ₃ , -F, -CH ₃ , -CH ₂ CH ₃ , -NHCH ₃ , -CHF ₂ , -C(O)CF ₃ , -CH ₂ C(OH)(CH ₃ ) ₂ , -CH(CH ₃ ) ₂ , C(CH3)3, -C3H5, -C(O)N(CH3)2, -CH2OCH3, -OCHF2, -CH(OH)CHCF3, -CO2H, -CO2CH3, - SO ₂ CH ₃ , -SO ₂ N(CH ₃ ) , cyclopropyl, pyrrolidinyl, morpholino, and morpholinomethyl. In some embo ovided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹ is: pharmaceutically acceptable salt or solvate thereof, wherein R ³ is hydrogen. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ³ is -CH ₃ or CH ₂ CH ₃ or propynyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ³ is C1 fluoroalkyl, such as CH2F, CHF ₂ , or CF ₃ . In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ³ is -CN. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ³ is -Cl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ³ is -N(R ¹⁰ )2, wherein each R ¹⁰ is independently hydrogen, C _1-2 alkyl, or C _1-2 fluoroalkyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ³ is -OR ¹⁵ , wherein each R ¹⁵ is independently hydrogen or C _1-4 alkyl, wherein the C _1-4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -OH, -F, and -CN. 31 In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is a 4- to 9-membered monocyclic or bicyclic heterocyclyl having 1 to 3 heteroatoms independently selected from oxygen and nitrogen, wherein the 4- to 9-membered monocyclic or bicyclic heterocyclyl is optionally substituted with one or more substituents independently selected from the group consisting of C1- 3 alkyl, C _1-2 fluoroalkyl, C _1-4 hydroxyalkyl, -CD ₃ , -F, -OH, -OCH ₃ , oxo, cyclopropyl, -COOR ⁸ , - CONH ₂ , -C(O)CH ₃ , -N(R ¹⁰ ) ₂ , -(CH ₂ ) _m OCH ₃ , -CN, -CH ₂ CN, -CH ₂ (C ₅ H ₄ N), -SO ₂ CH ₃ , phenyl, wherein each R ⁸ is independently hydrogen, cyclopropyl, , wherein the C1-4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -OH, -OCH3, -F, tetrahydropyran, and -CN; each R ¹⁰ is independently hydrogen, -COCH ₃ , -SO ₂ CH ₃ , C _1-2 alkyl, or C _1-2 fluoroalkyl; and m is 1 or 2. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is a 4- to 9-membered monocyclic or bicyclic heterocyclyl having 1 to 3 heteroatoms independently selected from oxygen and nitrogen, wherein the 4- to 9-membered monocyclic or bicyclic heterocyclyl is optionally substituted with one or more substituents independently selected from the group consisting of - CH ₃ , -CD ₃ , -OCH ₃ , -CH ₂ CH ₃ , -CH(CH ₃ ) ₂ , -CH ₂ CF ₃ , -CF ₃ , -CH ₂ OH, -CH ₂ C(OH)(CH ₃ ) ₂ , -F, -OH, -NH2, -CN, oxo, cyclopropyl, -COOC(CH3)3, -CONH2, -C(O)CH3, -CH2CN, -CH2CH2OCH3, - CH2(C5H4N), -SO2CH3, pheny In some embodiments, (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is a 4- to 7-membered monocyclic heterocyclyl having 1 to 3 heteroatoms independently selected from oxygen and nitrogen, wherein the 4- to 7-membered monocyclic heterocyclyl is optionally substituted with one or more substituents independently selected from the group consisting of C1-3 alkyl, C1-2 fluoroalkyl, C1-4 hydroxyalkyl, -CD ₃ , -F, -OH, -OCH ₃ , oxo, cyclopropyl, -COOR ⁸ , -CONH ₂ , -C(O)CH ₃ , -N(R ¹⁰ ) ₂ , -(CH2)mOCH3, -CN, -CH2CN, -CH2(C5H4N), -SO2CH3, and phenyl; wherein each R ⁸ is 32 independently hydrogen, cyclopropyl, tetrahydropyran, or C1-4 alkyl, wherein the C1-4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -OH, -OCH ₃ , -F, tetrahydropyran, and -CN; each R ¹⁰ is independently hydrogen, - COCH ₃ , -SO ₂ CH ₃ , C _1-2 alkyl, or C _1-2 fluoroalkyl; and m is 1 or 2. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is a 4- to 7-membered monocyclic heterocyclyl having 1 to 3 heteroatoms independently selected from oxygen and nitrogen, wherein the 4- to 7-membered monocyclic heterocyclyl is optionally substituted with one or more substituents independently selected from the group consisting of -CH3, -CD3, -OCH3, -CH2CH3, - CH(CH ₃ ) ₂ , -CH ₂ CF ₃ , -CF ₃ , -CH ₂ OH, -CH ₂ C(OH)(CH ₃ ) ₂ , -F, -OH, -NH ₂ , -CN, oxo, cyclopropyl, -COOC(CH3)3, -CONH2, -C(O)CH3, -CH2CN, -CH2CH2OCH3, -CH2(C5H4N), -SO2CH3, phenyl, s, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is a 4- to 7-membered monocyclic heterocyclyl selected from the group consisting of pyrrolidinyl, piperidinyl, oxazepanyl, morpholinyl, azetidinyl, and oxetanyl, wherein each of the pyrrolidinyl, piperidinyl, oxazepanyl, morpholinyl, azetidinyl, oxetanyl, and 1,1-dioxo-1,2,5-thiadiazolidinyl, is optionally substituted with one or more substituents independently selected from the group consisting of C _1-3 alkyl, C _1-2 fluoroalkyl, C1-4 hydroxyalkyl, -CD3, -F, -OH, -OCH3, oxo, cyclopropyl, -COOR ⁸ , -CONH2, - C(O)CH3, -N(R ¹⁰ )2, -(CH2)mOCH3, -CN, -CH2CN, -CH2(C5H4N), -SO2CH3, and phenyl; wherein each R ⁸ is independently hydrogen, cyclopropyl, tetrahydropyran, or C _1-4 alkyl, wherein the C _1-4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -OH, -OCH3, -F, tetrahydropyran, and -CN; each R ¹⁰ is independently hydrogen, - COCH ₃ , -SO ₂ CH ₃ , C _1-2 alkyl, or C _1-2 fluoroalkyl; and m is 1 or 2. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is a 4- to 7-membered monocyclic heterocyclyl selected from the group consisting of pyrrolidinyl, piperidinyl, oxazepanyl, morpholinyl, azetidinyl, and oxetanyl, wherein each of the pyrrolidinyl, piperidinyl, oxazepanyl, morpholinyl, azetidinyl, oxetanyl, and 1,1-dioxo-1,2,5-thiadiazolidinyl, is optionally substituted 33 with one or more substituents independently selected from the group consisting of -CH3, -CD3, - OCH3, -CH2CH3, -CH(CH3)2, -CH2CF3, -CF3, -CH2OH, -CH2C(OH)(CH3)2, -F, -OH, -NH2, -CN, oxo, cyclopropyl, -COOC(CH ₃ ) ₃ , -CONH _2, -C(O)CH ₃ , -CH ₂ CN, -CH ₂ CH ₂ OCH ₃ , -CH ₂ (C ₅ H ₄ N), -SO ₂ CH ₃ , pheny In some e pound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is a 4- to 7-membered monocyclic heterocyclyl selected from the group consisting of: pharmaceutically acceptable salt or solvate thereof, wherein R ² is a 6- to 9-membered bicyclic heterocyclyl having 1 to 2 heteroatoms independently selected from oxygen and nitrogen, wherein the 6- to 9-membered bicyclic heterocyclyl is optionally substituted with one or more substituents independently selected from the group consisting of C1-3 alkyl, C1-2 fluoroalkyl, C1-4 hydroxyalkyl, -CD ₃ , -F, -OH, -OCH ₃ , oxo, cyclopropyl, -COOR ⁸ , -CONH ₂ , -C(O)CH ₃ , -N(R ¹⁰ ) ₂ , -(CH ₂ ) _m OCH ₃ , -CN, -CH ₂ CN, -CH ₂ (C ₅ H ₄ N), -SO ₂ CH ₃ , pheny ; wherein each R ⁸ is independently hydrogen, cyclopropyl, tetrahyd ein the C _1-4 alkyl is optionally substituted with one or more sub stituents independently selected from the group consisting of -OH, -OCH3, -F, tetrahydropyran, and -CN; each R ¹⁰ is independently hydrogen, - COCH ₃ , -SO ₂ CH ₃ , C _1-2 alkyl, or C _1-2 fluoroalkyl; and m is 1 or 2. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is a 6- to 9-membered bicyclic heterocyclyl having 1 to 2 heteroatoms independently selected from oxygen and nitrogen, wherein the 6- to 9-membered bicyclic heterocyclyl is optionally substituted with one or more substituents independently selected from the group consisting of -CH3, -CD3, -OCH3, -CH2CH3, -CH(CH3)2, - CH2CF3, -CF3, -CH2OH, -CH2C(OH)(CH3)2, -F, -OH, -NH2, -CN, oxo, cyclopropyl, - 35 COOC(CH3)3, -CONH2, -C(O)CH3, -CH2CN, -CH2CH2OCH3, -CH2(C5H4N), -SO2CH3, phenyl, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is a 6- to 9-membered bicyclic heterocyclyl selected from the group consisting of 2-aza-bicyclo[2.2.1]heptanyl, 8-aza- bicyclo[3.2.1]octanyl, 2-aza-spiro[3.3]heptanyl, 3-azabicyclo[2.2.2]octanyl, 3-oxa-9- azabicyclo[3.3.1]nonanyl, 2-oxa-5-azabicyclo[2.2.1]heptanyl, 7-oxa-2-azaspiro[3.5]nonanyl, 5- azaspiro[2.3]hexanyl, 2-oxaspiro[4.4]nonanyl, 6-oxaspiro[3.4]octanyl, and 1- oxaspiro[4.4]nonanyl wherein each of the 2-aza-bicyclo[2.2.1]heptanyl, 8-aza- bicyclo[3.2.1]octanyl, 2-aza-spiro[3.3]heptanyl, 3-azabicyclo[2.2.2]octanyl, 3-oxa-9- azabicyclo[3.3.1]nonanyl, 2-oxa-5-azabicyclo[2.2.1]heptanyl, 7-oxa-2-azaspiro[3.5]nonanyl, 5- azaspiro[2.3]hexanyl, 2-oxaspiro[4.4]nonanyl, 6-oxaspiro[3.4]octanyl, and 1- oxaspiro[4.4]nonanyl is optionally substituted with one or more substituents independently selected from the group consisting of C _1-3 alkyl, C _1-2 fluoroalkyl, C _1-4 hydroxyalkyl, -CD ₃ , -F, - OH, -OCH ₃ , oxo, cyclopropyl, -COOR ⁸ , -CONH ₂ , -C(O)CH ₃ , -N(R ¹⁰ ) ₂ , -(CH ₂ ) _m OCH ₃ , -CN, - CH2CN, -CH2(C5H4N), -SO2CH3, pheny ; wherein each R ⁸ is independently hydrogen, cyclopropyl, tetr herein the C1-4 alkyl is optionally substituted with one or more substituents independently selected from the group consisting of -OH, -OCH ₃ , -F, tetrahydropyran, and -CN; each R ¹⁰ is independently hydrogen, - COCH ₃ , -SO ₂ CH ₃ , C _1-2 alkyl, or C _1-2 fluoroalkyl; and m is 1 or 2. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is a 6- to 9-membered bicyclic heterocyclyl selected from the group consisting of 2-aza-bicyclo[2.2.1]heptanyl, 8-aza- bicyclo[3.2.1]octanyl, 2-aza-spiro[3.3]heptanyl, 3-azabicyclo[2.2.2]octanyl, 3-oxa-9- azabicyclo[3.3.1]nonanyl, 2-oxa-5-azabicyclo[2.2.1]heptanyl, 7-oxa-2-azaspiro[3.5]nonanyl, 5- azaspiro[2.3]hexanyl, 2-oxaspiro[4.4]nonanyl, 6-oxaspiro[3.4]octanyl, and 1- oxaspiro[4.4]nonanyl wherein each of the 2-aza-bicyclo[2.2.1]heptanyl, 8-aza- 36 bicyclo[3.2.1]octanyl, 2-aza-spiro[3.3]heptanyl, 3-azabicyclo[2.2.2]octanyl, 3-oxa-9- azabicyclo[3.3.1]nonanyl, 2-oxa-5-azabicyclo[2.2.1]heptanyl, 7-oxa-2-azaspiro[3.5]nonanyl, 5- azaspiro[2.3]hexanyl, 2-oxaspiro[4.4]nonanyl, 6-oxaspiro[3.4]octanyl, and 1- oxaspiro[4.4]nonanyl is optionally substituted with one or more substituents independently selected from the group consisting of -CH3, -CD3, -OCH3, -CH2CH3, -CH(CH3)2, -CH2CF3, -CF3, -CH ₂ OH, -CH ₂ C(OH)(CH ₃ ) ₂ , -F, -OH, -NH ₂ , -CN, oxo, cyclopropyl, -COOC(CH ₃ ) ₃ , -CONH _2, - C(O)CH ₃ , -CH ₂ CN, -CH ₂ CH ₂ OCH ₃ , -CH ₂ (C ₅ H ₄ N), -SO ₂ CH ₃ , pheny . In some embodiments, provided is a compound of formula (I), o a ste eo so e , tauto e , pharmaceutically acceptable salt or solvate thereof, wherein R ² is a 6- to 9-membered bicyclic heterocyclyl selected from the group consisting of 2-aza-bicyclo[2.2.1]heptanyl, 8-aza- bicyclo[3.2.1]octanyl, 2-aza-spiro[3.3]heptanyl, 3-azabicyclo[2.2.2]octanyl, 3-oxa-9- azabicyclo[3.3.1]nonanyl, 2-oxa-5-azabicyclo[2.2.1]heptanyl, 7-oxa-2-azaspiro[3.5]nonanyl, 5- azaspiro[2.3]hexanyl, 2-oxaspiro[4.4]nonanyl, 6-oxaspiro[3.4]octanyl, and 1- oxaspiro[4.4]nonanyl, wherein each of the 2-aza-bicyclo[2.2.1]heptanyl, 8-aza- bicyclo[3.2.1]octanyl, 2-aza-spiro[3.3]heptanyl, 3-azabicyclo[2.2.2]octanyl, 3-oxa-9- azabicyclo[3.3.1]nonanyl, 2-oxa-5-azabicyclo[2.2.1]heptanyl, 7-oxa-2-azaspiro[3.5]nonanyl, 5- azaspiro[2.3]hexanyl, 2-oxaspiro[4.4]nonanyl, 6-oxaspiro[3.4]octanyl, and 1- oxaspiro[4.4]nonanyl is optionally substituted with one or more substituents independently selected from the group consisting of -CH3, -CH2CH3, -CH(CH3)2, -CH2C(OH)(CH3)2, - COOC(CH ₃ ) ₃ , -CN, -SO ₂ CH ₃ , ox In some embodiments, pro I), or a stereoisomer, tautomer, pharmaceutically acceptable salt o r solvate thereof, wherein R ² is a 6- to 9-membered bicyclic heterocyclyl selected from the group consisting of: 37 pharmaceutically acceptable salt or solvate thereof, wherein R ² is a C ₃ -C ₆ cycloalkyl, wherein the C ₃ -C ₆ cycloalkyl is optionally substituted with one or more substituents independently selected from the group consisting of -CH3, -F, -OH, -OCH3, -N(R ¹² )2, -CH2OH, =O, phenyl, -CN, C1 fluoroalkyl, -CONH ₂ , =NH(OH), -SO ₂ CH ₃ , and -CH(CH ₃ ) ₂ , wherein each R ¹² is independently hydrogen, -CH _3, C ₃ H ₅ , -SO ₂ CH ₃ , -CH ₂ CN, -CH ₂ (C ₆ H ₅ ), -CH ₂ COOCH ₂ CH ₃ , or a 5- to 6-membered heteroaryl having 1 to 2 nitrogen atoms, wherein the 5- to 6-membered heteroaryl is optionally substituted with one or more -CH3;. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is a cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl, wherein each of the cyclopropyl, cyclobutyl, cyclopentyl and cyclohexyl is optionally substituted with one or more substituents independently selected from the group consisting of -NH ₂ , -OH, -OCH ₃ , -CH ₂ OH, =O, , -CONH ₂ , phenyl, -CH ₃ , -CF ₃ , -F, -NHCH ₃ , -NH(C ₃ H ₅ ), -NHCH ₂ CN, -NH-COOCH ₂ CH ₃ , -NH(C ₅ H ₄ N), -NH(C ₆ H ₅ ), , =NH(OH), -SO ₂ CH ₃ , and -CH(CH ₃ ) ₂ . 38 In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is a C3-C6 cycloalkyl selected from the group consisting of: pharmaceutically acceptable salt or solvate thereof, wherein R ² is a C1-5 alkyl optionally substituted with one or more substituents independently selected from the group consisting of -N(CH ₃ ) ₂ , -OH, -CF ₃ , -NH ₂ , -COOC(CH ₃ ) ₃ , -NH-COCH ₃ , -NH-SO ₂ CH ₃ , -COONH _2, -COON(CH ₃ ) _2, cyclopropyl, methylcyclopropyl, -CH3, C3-C6 cycloalkyl, -SO2CH3, phenyl, pyridyl, and -CN. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is selected from the group consisting of -CH2CH2N(CH3)2, -C(OH)(CH3)CF3, -C(CH3)2OH, -CH(OH)CH3, -CH(OH)CF3, - C(OH)(CF ₃ ) ₂ , -CH(OH)CH ₃ , -CH(NH ₂ )C(CH ₃ ) ₃ , -CH ₂ C(O)OC(CH ₃ ) ₃ , and -C(CH ₃ )(NH ₂ )CF _3, - CH ₂ CH(OH)(C ₆ H ₅ ),. -CH ₂ C(OH)(CH ₃ )CF ₃ , -CH ₂ C(OH)(CH ₃ )(C ₃ H ₅ ), -CH ₂ CH ₂ (C ₅ H ₄ N),. - CH2CH(OH)(C6H11), -CH2C(OH)(CH3)2, -CH2CH(NH2)(C6H5), -CH2C(OH)(CF3)2, -CH2- 39 C(CH3)2NHCOCH3, -CH2-C(CH3)2NHSO2CH3, -CH2-CH(OH)-C(CH3)(C3H4), -CH2- C(CH3)2CONH2, -CH2-C(CH3)2CON(CH3)2, and -CH2-C(CH3)2SO2CH3. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is pyridinyl or pyrazolyl optionally substituted with one or more substituents independently selected from the group consisting of - CF ₃ and -CH ₃ . In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is pyridinyl substituted with -CF3. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is pyridinyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is pyrazolyl substituted with -CH3. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is pyrazolyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² is: mer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein Z is -O-C _n1 H _2n1 -, provided that O is directly bonded to the pyridinyl ring or phenyl ring or pyridazinyl ring. In one embodiment, n1 is 0, and thus Z is -O-. In another embodiment, n1 is 1, and thus Z is -OCH2-. In another embodiment, n1 is 2, and thus Z is -O-CH(CH ₃ )- or -O-CH ₂ -CH ₂ -. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein Z is -NR ⁶ -(CH2)n2-, provided that N is directly bonded to the pyridinyl or phenyl ring or pyridazinyl ring. In one embodiment, n2 is 0, and thus Z is -NR ⁶ -. In another embodiment, n2 is 1, and thus Z is -NR ⁶ -(CH ₂ )-. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ⁶ is hydrogen. 40 In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² and R ⁶ are taken together to form a 4- to 8-membered monocyclic or bicyclic heterocyclyl selected from the group consisting of: or bicyclic heterocyclyl is optionally substituted with one or more substituents independently selected from the group consisting -OH, -CH ₂ OH, - CH2N(R ¹⁰ )2, -C(CH3)2OH, -CF3, and -C(O)N(R ¹⁰ )2; and each R ¹⁰ is independently hydrogen or - CH3. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² and R ⁶ are taken together to form a 4- to 8-membered monocyclic or bicyclic heterocyclyl selected from the group consisting of: or bicyclic heterocyclyl is optionally substituted with one or more substituents independently selected from the group consisting -OH, -CH2OH, - CH ₂ N(CH ₃ ) ₂ , -C(CH ₃ ) ₂ OH, -CF ₃ , and -C(O)NHCH ₃ . In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ² and R ⁶ are taken together to form a 4- to 8-membered monocyclic or bicyclic heterocyclyl selected from the group consisting of: tomer, pharmaceutically acceptable salt or solvate thereof, wherein each R ⁸ is independently hydrogen, - 41 CH3, -C(CH3)3, cyclopropyl, -CH2CH3, -CH2CF3, -CH2CH2OH, -CH2C(OH)(CH3)2, - CH ₂ CH ₂ OCH ₃ -CH ₂ C(CN)(CH ₃ ) ₂ or (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ⁹ is -CF3. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ⁹ is -CH ₃ . In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹¹ is hydrogen, -CH ₃ , - CH ₂ CH ₃ , - CH ₂ (C ₃ H ₅ ), -CH ₂ CH ₂ -OCHF ₂ , or cyclopropyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹² is hydrogen, -CH3, -C3H5, - r, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹³ is hydrogen or methyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹⁴ is methyl or cyclopropyl. In some embodiments, provided is a compound of formula (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein R ¹⁵ is hydrogen, -CH ₃ , -CH ₂ CH ₃ , - CH ₂ CH(CH ₃ ) ₂ , -CH ₂ CH ₂ OH, -CHF ₂ , -CH ₂ CF ₃ , -CH ₂ CHF ₂ , -CH ₂ CH ₂ F, -CH ₂ CN, or - CH(CN)CH3. In some embodiments, the compound of formula (I) is a compound of formula (I-A): or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein Z, Q ₁ , Q ₂ , R ¹ , R ² , and R ³ are defined as in formula (I). In some embodiments, provided is a compound of formula (I-A), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein Q1 is N, and Q2 is CH. 42 In some embodiments, provided is a compound of formula (I-A), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein Q1 is CH, and Q2 is CH. In some embodiments, provided is a compound of formula (I-A), or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein Q ₁ is N, and Q ₂ is N. In some embodiments, the compound of formula (I) is a compound of formula (I-B): or a stereoisomer, tautomer, pharmaceutically acceptable salt or solvate thereof, wherein Z, R ¹ , R ² , and R ³ are defined as in formula (I). All possible combinations of the above-indicated embodiments of compounds of formula (I) and their tautomers, stereoisomers, pharmaceutically acceptable salts and solvates are considered to be embraced within the scope of this application. Exemplary compounds of formula (I) include, but are not limited to: N-[5-[2-Cyano-5-[[(3R)-1-methylpyrrolidin-3-yl]methoxy]-4-py ridyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-(2-dimethylaminoethylamino)-4-pyridyl]pyrazo lo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[3-(hydroxymethyl)azetidin-1-yl]-4-pyridyl]p yrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; (R)-5-((1-methylpyrrolidin-3-yl)methoxy)-4-(2-(pyridin-3-yla mino)pyrazolo[1,5-a]pyridin-5- yl)picolinonitrile; N-[5-[2-cyano-5-[(3S)-1-(2,2,2-trifluoroethyl)pyrrolidin-3-y l]oxy-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; (S)-N-(5-(2-cyano-5-(pyrrolidin-3-yloxy)pyridin-4-yl)pyrazol o[1,5-a]pyridin-2- yl)cyclopropanecarboxamide N-[5-[2-cyano-5-[(3S)-1-cyclopropylpyrrolidin-3-yl]oxy-4-pyr idyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide N-(5-(2-cyano-5-(((2*S,4*R)-2-(trifluoromethyl)piperidin-4-y l)oxy)pyridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide 43

N-(5-(2-cyano-5-((4-(trifluoromethyl)piperidin-4-yl)oxy)p yridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide; N-[5-[2-cyano-5-[[1-methyl-4-(trifluoromethyl)-4-piperidyl]o xy]-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[[(4R)-3,3-difluoro-1-methyl-4-piperidyl]oxy ]-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[[(6R)-4-methyl-1,4-oxazepan-6-yl]oxy]-4-pyr idyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[[(1R,4R,5R)-2-methyl-2-azabicyclo[2.2.1]hep tan-5-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; N-(5-(2-cyano-5-(((2*R,4*S)-2-(trifluoromethyl)piperidin-4-y l)oxy)pyridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide; N-[5-[2-cyano-5-[[(4R)-3,3-difluoro-4-piperidyl]oxy]-4-pyrid yl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; (S)-N-(5-(2-cyano-5-((1-methylpyrrolidin-3-yl)methoxy)pyridi n-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide; N-[5-[5-[[(1*S,4*S,5*R)-2-azabicyclo[2.2.1]heptan-5-yl]oxy]- 2-cyano-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[5-[[(1*R,4*R,5*S)-2-azabicyclo[2.2.1]heptan-5-yl]oxy]- 2-cyano-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-[[(1R,3S)-3-aminocyclopentyl]methoxy]-2-cyano-4-pyri dyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[[(6R)-1,4-oxazepan-6-yl]oxy]-4-pyridyl]pyra zolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-[[(1R,3R)-3-aminocyclopentyl]methoxy]-2-cyano-4-pyri dyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-(azetidin-3-ylmethoxy)-2-cyano-4-pyridyl]pyrazolo[1, 5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-[[(1R,4R,5R)-2-azabicyclo[2.2.1]heptan-5-yl]oxy]-2-c yano-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[(3R)-1-cyclopropylpyrrolidin-3-yl]oxy-4-pyr idyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; 44

N-[5-[2-cyano-5-[[(6S)-4-methyl-1,4-oxazepan-6-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[[(1S,5R)-8-methyl-8-azabicyclo[3.2.1]octan- 3-yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[[(3S,5R)-1-methyl-5-(trifluoromethyl)-3-pip eridyl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; N-(5-(2-cyano-5-(((2*S,4*R)-1-methyl-2-(trifluoromethyl)pipe ridin-4-yl)oxy)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide; N-(5-(2-cyano-5-(((2*R,4*S)-1-methyl-2-(trifluoromethyl)pipe ridin-4-yl)oxy)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide; N-[5-[5-(azetidin-3-yloxy)-2-cyano-4-pyridyl]pyrazolo[1,5-a] pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[(1-methylazetidin-3-yl)methoxy]-4-pyridyl]p yrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; rac-N-(5-(2-cyano-5-((5-oxopyrrolidin-3-yl)methoxy)pyridin-4 -yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide; tert-butyl 2-[[6-cyano-4-[2-(cyclopropanecarbonylamino)pyrazolo[1,5-a]p yridin-5-yl]-3- pyridyl]oxy]-6-azaspiro[3.3]heptane-6-carboxylate; tert-butyl (3R)-3-[[6-cyano-4-[2-(cyclopropanecarbonylamino)pyrazolo[1, 5-a]pyridin-5-yl]-3- pyridyl]oxymethyl]pyrrolidine-1-carboxylate; (R)-N-(5-(2-cyano-5-((4-methylmorpholin-2-yl)methoxy)pyridin -4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide; (R)-N-(5-(2-cyano-5-((1-methylpiperidin-3-yl)methoxy)pyridin -4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide; (S)-N-(5-(2-cyano-5-((1-methylpiperidin-3-yl)methoxy)pyridin -4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide; N-[5-[2-cyano-5-[[(2S)-4-methylmorpholin-2-yl]methoxy]-4-pyr idyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[(2-oxo-3-azabicyclo[2.2.2]octan-4-yl)methox y]-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[(1-hydroxycyclobutyl)methoxy]-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[(1-hydroxycyclopentyl)methoxy]-4-pyridyl]py razolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; 45

N-[5-[2-cyano-5-(4-piperidylmethoxy)-4-pyridyl]pyrazolo[1 ,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-[(1-aminocyclobutyl)methoxy]-2-cyano-4-pyridyl]pyraz olo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-Cyano-5-[[(3R)-pyrrolidin-3-yl]methoxy]-4-pyridyl]py razolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-Cyano-5-(cyclopropoxy)-4-pyridyl]pyrazolo[1,5-a]pyri din-2- yl]cyclopropanecarboxamide; N-[5-[2-Cyano-5-(3-pyridylmethoxy)-4-pyridyl]pyrazolo[1,5-a] pyridin-2- yl]cyclopropanecarboxamide; N-(5-(2-Cyano-5-(pyridin-2-ylmethoxy)pyridin-4-yl)pyrazolo[1 ,5-a]pyridin-2- yl)cyclopropanecarboxamide; (*R)-N-(5-(2-Cyano-5-(3,3,3-trifluoro-2-hydroxy-2-methylprop oxy)pyridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide; (*S)-N-(5-(2-Cyano-5-(3,3,3-trifluoro-2-hydroxy-2-methylprop oxy)pyridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide; N-[5-[2-cyano-5-[(1-methyl-4-piperidyl)methoxy]-4-pyridyl]py razolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-Cyano-5-(2-hydroxy-2-methyl-propoxy)-4-pyridyl]pyraz olo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; trans-N-(5-(2-Cyano-5-(((1r,4r)-4-hydroxycyclohexyl)methoxy) pyridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide; N-[5-[2-Cyano-5-(1-methylazetidin-3-yl)oxy-4-pyridyl]pyrazol o[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; tert-butyl 2-[[6-Cyano-4-[2-(cyclopropanecarbonylamino)pyrazolo[1,5-a]p yridin-5-yl]-3- pyridyl]oxy]acetate; (*R)-N-(5-(5-((1-Acetylpyrrolidin-3-yl)oxy)-2-cyanopyridin-4 -yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide; (*S)-N-(5-(5-((1-Acetylpyrrolidin-3-yl)oxy)-2-cyanopyridin-4 -yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide; (*R)-N-(5-(2-cyano-5-((1-methylpyrrolidin-3-yl)oxy)pyridin-4 -yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide; (*S)-N-(5-(2-cyano-5-((1-methylpyrrolidin-3-yl)oxy)pyridin-4 -yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide; 46

N-[5-[5-[(1-acetyl-4-piperidyl)methoxy]-2-cyano-4-pyridyl ]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[[6-(trifluoromethyl)-3-pyridyl]methoxy]-4-p yridyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[[2-(trifluoromethyl)-4-pyridyl]methoxy]-4-p yridyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[(2S)-2-hydroxypropoxy]-4-pyridyl]pyrazolo[1 ,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-(4-hydroxycyclohexoxy)-4-pyridyl]pyrazolo[1, 5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[[(3S)-1-methyl-3-piperidyl]oxy]-4-pyridyl]p yrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[[(1S,5R)-8-methyl-8-azabicyclo[3.2.1]octan- 3-yl]oxy]-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[5-[[(1S,5R)-8-azabicyclo[3.2.1]octan-3-yl]methoxy]-2-c yano-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[(3-hydroxycyclobutyl)methoxy]-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[3-(hydroxymethyl)cyclobutoxy]-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-(3-hydroxyazetidin-1-yl)-4-pyridyl]pyrazolo[ 1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[[(3R)-1-methylpyrrolidin-3-yl]methylamino]- 4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[3-(dimethylaminomethyl)azetidin-1-yl]-4-pyr idyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; 1-[6-cyano-4-[2-(cyclopropanecarbonylamino)pyrazolo[1,5-a]py ridin-5-yl]-3-pyridyl]-N- methyl-azetidine-3-carboxamide; N-[5-[2-cyano-5-[3-(1-hydroxy-1-methyl-ethyl)azetidin-1-yl]- 4-pyridyl]pyrazolo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[3-hydroxy-3-(trifluoromethyl)azetidin-1-yl] -4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-(cyclopropylmethylamino)-4-pyridyl]pyrazolo[ 1,5-a]pyridin-2- yl]cyclopropanecarboxamide; 47

N-[5-[2-cyano-5-[(1-methylpyrazol-3-yl)amino]-4-pyridyl]p yrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-(cyclopentylamino)-4-pyridyl]pyrazolo[1,5-a] pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[(1-methylpyrazol-4-yl)amino]-4-pyridyl]pyra zolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-(cyclopropylamino)-4-pyridyl]pyrazolo[1,5-a] pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[(2-hydroxy-2-methyl-propyl)amino]-4-pyridyl ]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; (3-endo)-N-(5-(5-(((1R,3r,5S)-8-azabicyclo[3.2.1]octan-3-yl) oxy)-2-cyanopyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide; N-(5-(2-cyano-5-(((1R,3R,5S)-8-methyl-8-azabicyclo[3.2.1]oct an-3-yl)methoxy)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide; N-[5-[2-cyano-5-[[(6S)-1,4-oxazepan-6-yl]oxy]-4-pyridyl]pyra zolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[(1-methyl-4-piperidyl)oxy]-4-pyridyl]pyrazo lo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-(5-(2-cyano-5-(((1s,4s)-4-hydroxycyclohexyl)oxy)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide; (rac-)-N-[5-[2-cyano-5-[3-hydroxy-3-(trifluoromethyl)pyrroli din-1-yl]-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; (R)-N-(5-(2-cyano-5-((1-methylpiperidin-3-yl)oxy)pyridin-4-y l)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide; cis-N-(5-(2-cyano-5-(((1S,4S)-4-hydroxy-4-methylcyclohexyl)o xy)pyridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide; N-[5-[2-cyano-5-(2-methyl-1,3,3a,4,6,6a-hexahydropyrrolo[3,4 -c]pyrrol-5-yl)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-(2-methyl-2,6-diazaspiro[3.3]heptan-6-yl)-4- pyridyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; (3-endo)-N-[5-[2-cyano-5-[[(1R,5S)-3-oxa-9-azabicyclo[3.3.1] nonan-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[(2,2,6,6-tetramethyl-4-piperidyl)oxy]-4-pyr idyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; 48

N-[5-[2-cyano-5-[(2R)-2-hydroxypropoxy]-4-pyridyl]pyrazol o[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[[(3S,5R)-5-(trifluoromethyl)-3-piperidyl]ox y]-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[(2R)-3,3,3-trifluoro-2-hydroxy-propoxy]-4-p yridyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[(2S)-3,3,3-trifluoro-2-hydroxy-propoxy]-4-p yridyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-(5-(2-cyano-5-(((1s,3s)-3-(methylamino)cyclobutyl)methoxy) pyridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide; N-[5-[2-cyano-5-[3,3,3-trifluoro-2-hydroxy-2-(trifluoromethy l)propoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[5-cyano-2-[[(3R)-1-methylpyrrolidin-3-yl]methoxy]pheny l]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-cyano-2-[[(2R)-morpholin-2-yl]methoxy]phenyl]pyrazol o[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-cyano-2-[[(2R)-6,6-dimethylmorpholin-2-yl]methoxy]ph enyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-cyano-2-[[(2S)-morpholin-2-yl]methoxy]phenyl]pyrazol o[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-cyano-2-[[(2S)-6,6-dimethylmorpholin-2-yl]methoxy]ph enyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; 5-[[(3R)-1-methylpyrrolidin-3-yl]methoxy]-4-[2-(4-pyridylami no)pyrazolo[1,5-a]pyridin-5- yl]pyridine-2-carbonitrile; 4-(2-anilinopyrazolo[1,5-a]pyridin-5-yl)-5-[[(3R)-1-methylpy rrolidin-3-yl]methoxy]pyridine-2- carbonitrile; 5-[[(3R)-1-methylpyrrolidin-3-yl]methoxy]-4-[2-(2-pyridylami no)pyrazolo[1,5-a]pyridin-5- yl]pyridine-2-carbonitrile; (S)-N-[5-[2-cyano-5-[(3S)-1-(2-methoxyethyl)pyrrolidin-3-yl] oxy-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; (S)-N-[5-[2-cyano-5-[(3S)-1-(2-pyridylmethyl)pyrrolidin-3-yl ]oxy-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; (R)-N-[5-[2-cyano-5-[(3R)-1-(2,2,2-trifluoroethyl)pyrrolidin -3-yl]oxy-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; 49

(R)-N-[5-[2-cyano-5-[(3R)-1-(2-methoxyethyl)pyrrolidin-3- yl]oxy-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; (R)-N-[5-[2-cyano-5-[(3R)-1-(2-pyridylmethyl)pyrrolidin-3-yl ]oxy-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; (R)-N-[5-[2-cyano-5-[(3R)-1-(cyanomethyl)pyrrolidin-3-yl]oxy -4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; (S)-N-[5-[2-cyano-5-[(3S)-1-(cyanomethyl)pyrrolidin-3-yl]oxy -4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-(5-(2-methyl-5-((1-methylazetidin-3-yl)oxy)pyridin-4-yl)py razolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide ; N-(1-(difluoromethyl)-1H-pyrazol-4-yl)-5-(2-methyl-5-(((1R,5 S,7s)-9-methyl-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl)oxy)pyridin-4-yl)pyrazolo[1,5-a] pyridin-2-amine; 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4-yl)-N-(1- (difluoromethyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-2-am ine; N-(4-fluoro-1-methyl-1H-pyrazol-3-yl)-5-(2-methyl-5-(((1R,5S ,7s)-9-methyl-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl)oxy)pyridin-4-yl)pyrazolo[1,5-a] pyridin-2-amine; N-(3-fluoro-1-methyl-1H-pyrazol-4-yl)-5-(2-methyl-5-(((1R,5S ,7s)-9-methyl-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl)oxy)pyridin-4-yl)pyrazolo[1,5-a] pyridin-2-amine; N-(5-fluoro-1-methyl-1H-pyrazol-3-yl)-5-(2-methyl-5-(((1R,5S ,7s)-9-methyl-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl)oxy)pyridin-4-yl)pyrazolo[1,5-a] pyridin-2-amine; 1-(4-((5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl )oxy)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-1H-pyrazol-1-yl)-2-met hylpropan-2-ol; 1-(4-((5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl )oxy)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-1-(2-hydroxy-2-methylp ropyl)-1H-pyrazol-3-yl)-2,2,2- trifluoroethan-1-one; 7-endo-5-[2-methyl-5-[[(1S,5R)-3-oxa-9-azabicyclo[3.3.1]nona n-7-yl]oxy]-4-pyridyl]-N-(1- methylpyrazol-4-yl)pyrazolo[1,5-a]pyridin-2-amine; 7-endo-N-(1-methyl-1H-pyrazol-4-yl)-5-(2-methyl-5-(((1R,5S,7 s)-9-methyl-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl)oxy)pyridin-4-yl)pyrazolo[1,5-a] pyridin-2-amine; endo-5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)o xy)-2-methylpyridin-4-yl)-N-(1- methyl-1H-pyrazol-3-yl)pyrazolo[1,5-a]pyridin-2-amine; 7-endo-N-(5-fluoropyridin-2-yl)-5-(2-methyl-5-(((1R,5S,7s)-9 -methyl-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl)oxy)pyridin-4-yl)pyrazolo[1,5-a] pyridin-2-amine; 50

5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy )-2-methylpyridin-4-yl)-N-(5- fluoropyridin-2-yl)pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-(1 -methylpyrazol-4- yl)pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-(1 -methylpyrazol-3- yl)pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-(2 -pyridyl)pyrazolo[1,5- a]pyridin-2-amine; 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-(3 -pyridyl)pyrazolo[1,5- a]pyridin-2-amine; 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-py rimidin-4-yl-pyrazolo[1,5- a]pyridin-2-amine; N-(1-isopropylpyrazol-4-yl)-5-[2-methyl-5-[[(2S)-morpholin-2 -yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-py ridazin-3-yl-pyrazolo[1,5- a]pyridin-2-amine; N-(1-isopropylpyrazol-3-yl)-5-[2-methyl-5-[[(2S)-morpholin-2 -yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; endo-N-(5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-y l)oxy)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide; N-[5-[2-methyl-5-[(3R)-1-methylpyrrolidin-3-yl]oxy-4-pyridyl ]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-(5-(2-methyl-5-(((1R,3r,5S)-8-methyl-8-azabicyclo[3.2.1]oc tan-3-yl)oxy)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide; N-[5-[2-methyl-5-[(3S)-1-methylpyrrolidin-3-yl]oxy-4-pyridyl ]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-(5-(2-methyl-5-(((1R,3r,5S)-8-methyl-8-azabicyclo[3.2.1]oc tan-3-yl)oxy)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide; N-[5-[5-(1-ethylazetidin-3-yl)oxy-2-methyl-4-pyridyl]pyrazol o[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-(1-isopropylazetidin-3-yl)oxy-2-methyl-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]py razolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; 51

N-[5-[5-[(3-aminooxetan-3-yl)methoxy]-2-methyl-4-pyridyl] pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-[(1-amino-3,3-difluoro-cyclobutyl)methoxy]-2-methyl- 4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; trans-N-[5-[5-(3-methoxycyclobutoxy)-2-methyl-4-pyridyl]pyra zolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; cis-N-[5-[5-(3-methoxycyclobutoxy)-2-methyl-4-pyridyl]pyrazo lo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; cis-N-[5-[5-[(4-hydroxycyclohexyl)methoxy]-2-methyl-4-pyridy l]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-[(2S)-2-amino-3,3-dimethyl-butoxy]-2-methyl-4-pyridy l]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-[(2R)-2-amino-3,3-dimethyl-butoxy]-2-methyl-4-pyridy l]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; trans-N-(5-(5-(((1r,4r)-4-hydroxy-4-methylcyclohexyl)oxy)-2- methylpyridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide; N-[5-[5-[(1R,3S)-3-aminocyclopentoxy]-2-methyl-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-[(1R,3R)-3-aminocyclopentoxy]-2-methyl-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-[(1-aminocyclobutyl)methoxy]-2-methyl-4-pyridyl]pyra zolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-[(1-aminocyclopentyl)methoxy]-2-methyl-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-methyl-5-[[1-(methylamino)cyclobutyl]methoxy]-4-pyri dyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-[[1-(cyclopropylamino)cyclobutyl]methoxy]-2-methyl-4 -pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; trans-N-[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]pyra zolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; (*R)-N-[5-[5-(2-amino-3,3,3-trifluoro-2-methyl-propoxy)-2-me thyl-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; (*S)-N-[5-[5-(2-amino-3,3,3-trifluoro-2-methyl-propoxy)-2-me thyl-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; 52

7-endo-N-(5-(5-(((1R,5S,7s)-9-ethyl-3-oxa-9-azabicyclo[3. 3.1]nonan-7-yl)oxy)-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanec arboxamide; 5-[5-[(1-amino-3,3-difluoro-cyclobutyl)methoxy]-2-methyl-4-p yridyl]-N-(1-methylpyrazol-3- yl)pyrazolo[1,5-a]pyridin-2-amine; (1r,4r)-1-methyl-4-((6-methyl-4-(2-((1-methyl-1H-pyrazol-4-y l)amino)pyrazolo[1,5-a]pyridin- 5-yl)pyridin-3-yl)oxy)cyclohexan-1-ol; N-(5-(2-methyl-5-(((1S,4S,7R)-5-methyl-2-oxa-5-azabicyclo[2. 2.1]heptan-7-yl)oxy)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide; N-(5-(5-(((1S,4S,7R)-2-oxa-5-azabicyclo[2.2.1]heptan-7-yl)ox y)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide; N-[5-[2-methyl-5-[[(2R)-morpholin-2-yl]methoxy]-4-pyridyl]py razolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-[[(2S)-5,5-dimethylmorpholin-2-yl]methoxy]-2-methyl- 4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-methyl-5-[[(2S,5R)-5-methylmorpholin-2-yl]methoxy]-4 -pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[5-[(3-fluoro-1-methyl-azetidin-3-yl)methoxy]-2-methyl- 4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; trans-N-[5-[5-(3-aminocyclobutoxy)-2-methyl-4-pyridyl]pyrazo lo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; cis-N-[5-[5-[(3-aminocyclobutyl)methoxy]-2-methyl-4-pyridyl] pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; 2-((5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)ox y)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-N-methylisonicotinamid e; 6-((5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)ox y)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-N-methylnicotinamide; N-(1-methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl)-5-(2-methyl -5-(((1R,5S,7s)-9-methyl-3-oxa- 9-azabicyclo[3.3.1]nonan-7-yl)oxy)pyridin-4-yl)pyrazolo[1,5- a]pyridin-2-amine; N-(5-(5-(((1s,3s)-3-aminocyclobutyl)methoxy)-2-cyanopyridin- 4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide; cis-N-[5-[2-cyano-5-[[3-(2-pyridylamino)cyclobutyl]methoxy]- 4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; cis-N-[5-[2-cyano-5-[[3-[(1-methylpyrazol-3-yl)amino]cyclobu tyl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; 53

rac-N-[5-[2-cyano-5-[[4-hydroxy-4-(trifluoromethyl)cycloh exyl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; cis-N-(5-(5-(((1*S,3*R)-3-hydroxycyclopentyl)oxy)-2-methylpy ridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide; cis-N-(5-(5-(((1*R,3*S)-3-hydroxycyclopentyl)oxy)-2-methylpy ridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide; trans-4-[[6-methyl-4-[2-[(1-methylpyrazol-3-yl)amino]pyrazol o[1,5-a]pyridin-5-yl]-3- pyridyl]oxy]cyclohexanol; trans-4-[[6-methyl-4-[2-(2-pyridylamino)pyrazolo[1,5-a]pyrid in-5-yl]-3- pyridyl]oxy]cyclohexanol; trans-N-(5-(5-(((1*S,3*S)-3-hydroxycyclopentyl)oxy)-2-methyl pyridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide; cis-4-[[6-methyl-4-[2-[(1-methylpyrazol-3-yl)amino]pyrazolo[ 1,5-a]pyridin-5-yl]-3- pyridyl]oxy]cyclohexanol; trans-N-[5-[5-(4-hydroxycyclohexoxy)-2-prop-1-ynyl-4-pyridyl ]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-methyl-5-(4-oxocyclohexoxy)-4-pyridyl]pyrazolo[1,5-a ]pyridin-2- yl]cyclopropanecarboxamide; trans-4-[[4-[2-[(1-methylpyrazol-3-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-prop-1-ynyl-3- pyridyl]oxy]cyclohexanol; rac-N-[5-[5-[(4,4-difluoro-1-hydroxy-cyclohexyl)methoxy]-2-m ethyl-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; (*R)-N-(5-(2-methyl-5-(3,3,3-trifluoro-2-hydroxy-2-methylpro poxy)pyridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide; (*S)-N-(5-(2-methyl-5-(3,3,3-trifluoro-2-hydroxy-2-methylpro poxy)pyridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide; N-(5-(5-(((1r,4r)-4-hydroxy-4-(trifluoromethyl)cyclohexyl)ox y)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide; N-(5-(5-(((1r,1r)-4-hydroxy-4-phenylcyclohexyl)oxy)-2-methyl pyridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide; (*R)-N-(5-(5-(2-cyclopropyl-2-hydroxypropoxy)-2-methylpyridi n-4-yl)pyrazolo[1,5-a]pyridin- 2-yl)cyclopropanecarboxamide; trans-N-(5-(5-(((1*R,3*R)-3-hydroxycyclohexyl)oxy)-2-methylp yridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide; 54

trans-N-(5-(5-(((1*S,3*S)-3-hydroxycyclohexyl)oxy)-2-meth ylpyridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide; N-(5-(5-((4-hydroxy-4-isopropylcyclohexyl)oxy)-2-methylpyrid in-4-yl)pyrazolo[1,5-a]pyridin- 2-yl)cyclopropanecarboxamide; (*S)-N-(5-(5-(2-cyclohexyl-2-hydroxyethoxy)-2-methylpyridin- 4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide; trans-4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1 ,5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxy]cyclohexanol; N-[5-[5-(4-hydroxyiminocyclohexoxy)-2-methyl-4-pyridyl]pyraz olo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; 1-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-methyl-3- pyridyl]oxy]-2-methyl-propan-2-ol; 1-[[4-[2-[(5,6-dimethylpyridazin-3-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-methyl-3- pyridyl]oxy]-2-methyl-propan-2-ol; 1-[[4-[2-[(2-ethyl-6-methyl-pyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxy]-2-methyl-propan-2-ol; (*R)-3-(((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1 ,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)methyl)tetrahydrofuran-3-ol; (3R,5R)-5-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo [1,5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]tetrahydrofuran-3-ol; 1-[[4-[2-[[2-(methoxymethyl)-6-methyl-pyrimidin-4-yl]amino]p yrazolo[1,5-a]pyridin-5-yl]-6- methyl-3-pyridyl]oxy]-2-methyl-propan-2-ol; N-(2,6-dimethylpyrimidin-4-yl)-5-(2-methyl-5-(((2*S,3*R)-2-m ethyltetrahydrofuran-3- yl)methoxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2-amine; N-(2,6-dimethylpyrimidin-4-yl)-5-(2-methyl-5-(((2*R,3*S)-2-m ethyltetrahydrofuran-3- yl)methoxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2-amine; 3-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]amino]-5-methyl-1H-pyridazin-6-one; 6-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]amino]-2,4-dimethyl-pyridazin-3-one; (*S)-N-[5-[5-[(3-cyanopyrrolidin-3-yl)methoxy]-2-methyl-4-py ridyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; (*R)-N-[5-[5-[[(3R)-3-cyanopyrrolidin-3-yl]methoxy]-2-methyl -4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; 55

(*S)-N-[5-[5-[(3-cyano-1-methyl-pyrrolidin-3-yl)methoxy]- 2-methyl-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; (*R)-N-[5-[5-[(3-cyano-1-methyl-pyrrolidin-3-yl)methoxy]-2-m ethyl-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; (*R)-N-[5-[5-[(3-methoxypyrrolidin-3-yl)methoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide; (*S)-N-[5-[5-[(3-methoxypyrrolidin-3-yl)methoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide; (*R)-3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]tetrahydropyran-3-ol; 1-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]cyclobutanol; (2R,3S)-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo [1,5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]tetrahydrofuran-3-ol; (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(8-oxaspir o[4.4]nonan-7-ylmethoxy)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; (*S)-5-(5-((6-oxaspiro[3.4]octan-7-yl)methoxy)-2-methylpyrid in-4-yl)-N-(2,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine; N-[5-[5-[(3-cyanoazetidin-3-yl)methoxy]-2-methyl-4-pyridyl]p yrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; (*S)-N-[5-[5-[(3-hydroxypyrrolidin-3-yl)methoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide; (*R)-N-[5-[5-[(3-hydroxypyrrolidin-3-yl)methoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide; (1r,4r)-4-((4-(2-((2-ethyl-6-methylpyrimidin-4-yl)amino)pyra zolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)cyclohexan-1-ol; (1r,4r)-4-((4-(2-((2-(methoxymethyl)-6-methylpyrimidin-4-yl) amino)pyrazolo[1,5-a]pyridin-5- yl)-6-methylpyridin-3-yl)oxy)cyclohexan-1-ol; 6-((5-(5-(((1r,4r)-4-hydroxycyclohexyl)oxy)-2-methylpyridin- 4-yl)pyrazolo[1,5-a]pyridin-2- yl)amino)-2,4-dimethylpyridazin-3(2H)-one; (1r,4r)-4-((6-methyl-4-(2-((6-methyl-2-(methylamino)pyrimidi n-4-yl)amino)pyrazolo[1,5- a]pyridin-5-yl)pyridin-3-yl)oxy)cyclohexan-1-ol; 2-methyl-1-[[6-methyl-4-[2-[[6-methyl-2-(methylamino)pyrimid in-4-yl]amino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]propan-2-ol; 56

1-[[4-[2-[(2-cyclopropyl-6-methyl-pyrimidin-4-yl)amino]py razolo[1,5-a]pyridin-5-yl]-6- methyl-3-pyridyl]oxy]-2-methyl-propan-2-ol; (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(9-oxaspir o[4.4]nonan-8-ylmethoxy)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; (*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(9-oxaspir o[4.4]nonan-8-ylmethoxy)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-;methyl-5-[(2-methy ltetrahydrofuran-2-yl)methoxy]- 4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine N-[5-[5-[(3-methoxyazetidin-3-yl)methoxy]-2-methyl-4-pyridyl ]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; (1R,2R)-2-methyl-N-[5-[2-methyl-5-[[(1R,4R)-5-oxa-2-azabicyc lo[2.2.1]heptan-4-yl]methoxy]- 4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamid e; N-(6-cyclopropylpyridazin-3-yl)-5-[2-methyl-5-[[(1R,4R)-2-me thyl-5-oxa-2- azabicyclo[2.2.1]heptan-4-yl]methoxy]-4-pyridyl]pyrazolo[1,5 -a]pyridin-2-amine; 5-[2-methyl-5-[[(1R,4R)-2-methyl-5-oxa-2-azabicyclo[2.2.1]he ptan-4-yl]methoxy]-4-pyridyl]- N-(5-methylpyrazin-2-yl)pyrazolo[1,5-a]pyridin-2-amine; N-[5-[2-methyl-5-[[(1S,4S)-2-methyl-5-oxa-2-azabicyclo[2.2.1 ]heptan-4-yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[[(1R,4R)-5-oxa -2-azabicyclo[2.2.1]heptan-4- yl]methoxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 4-[[6-methyl-4-[2-(1H-pyrrolo[2,3-b]pyridin-6-ylamino)pyrazo lo[1,5-a]pyridin-5-yl]-3- pyridyl]oxy]cyclohexanol; 2-methyl-1-[[6-methyl-4-[2-(1H-pyrrolo[2,3-b]pyridin-6-ylami no)pyrazolo[1,5-a]pyridin-5-yl]- 3-pyridyl]oxy]propan-2-ol; 4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]pyrazolo[ 1,5-a]pyridin-2-yl]amino]-2,6- dimethoxy-N-(2,2,2-trifluoroethyl)benzamide; N-cyclopropyl-4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyr idyl]pyrazolo[1,5-a]pyridin-2- yl]amino]-2-methoxy-benzamide; N-ethyl-4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]p yrazolo[1,5-a]pyridin-2- yl]amino]-2,6-dimethoxy-benzamide; 6-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]amino]-N,N,4-trimethyl-pyridine-2-carboxamide; N-cyclopropyl-4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyr idyl]pyrazolo[1,5-a]pyridin-2- yl]amino]-2,6-dimethoxy-benzamide; 57

methyl 4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]pyrazolo[ 1,5-a]pyridin-2- yl]amino]-2-methoxy-benzoate; 2-ethyl-6-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyr idyl]pyrazolo[1,5-a]pyridin-2- yl]amino]-4-methyl-pyridazin-3-one; N-[5-[2-methyl-5-[[(1R,4R)-5-oxa-2-azabicyclo[2.2.1]heptan-4 -yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-methyl-5-[[(1R,4R)-2-methyl-5-oxa-2-azabicyclo[2.2.1 ]heptan-4-yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; (1R,2R)-2-methyl-N-[5-[2-methyl-5-[[(1R,4R)-2-methyl-5-oxa-2 -azabicyclo[2.2.1]heptan-4- yl]methoxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropa necarboxamide; 5-[2-methyl-5-[[(1S,4S)-5-oxa-2-azabicyclo[2.2.1]heptan-4-yl ]methoxy]-4-pyridyl]-N-(5- methylpyrazin-2-yl)pyrazolo[1,5-a]pyridin-2-amine; N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[[(1R,4R)-5-oxa-2-azabic yclo[2.2.1]heptan-4-yl]methoxy]- 2-(trifluoromethyl)-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine ; N-[5-[2-methyl-5-[[(1S,4S)-5-oxa-2-azabicyclo[2.2.1]heptan-4 -yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[[(1R,4R)-5-oxa-2-azabic yclo[2.2.1]heptan-4-yl]methoxy]- 2-(trifluoromethyl)-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine ; N-(6-cyclopropylpyridazin-3-yl)-5-[2-methyl-5-[[(1R,4R)-5-ox a-2-azabicyclo[2.2.1]heptan-4- yl]methoxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(1R,4R)-2-methyl-5-oxa-2-azabicyclo[2.2.1]he ptan-4-yl]methoxy]-4-pyridyl]- N-(6-methylpyridazin-3-yl)pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(1R,4R)-5-oxa-2-azabicyclo[2.2.1]heptan-4-yl ]methoxy]-4-pyridyl]-N-(5- methylpyrazin-2-yl)pyrazolo[1,5-a]pyridin-2-amine; (*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(8-oxaspir o[4.4]nonan-7-ylmethoxy)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]-1,1,1,3,3,3-hexafluoro-propan-2-ol 1-[[4-[2-(imidazo[1,2-b]pyridazin-6-ylamino)pyrazolo[1,5-a]p yridin-5-yl]-6-methyl-3- pyridyl]oxy]-2-methyl-propan-2-ol; 1-[[4-[2-[(2-tert-butyl-6-methyl-pyrimidin-4-yl)amino]pyrazo lo[1,5-a]pyridin-5-yl]-6-methyl- 3-pyridyl]oxy]-2-methyl-propan-2-ol; 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-methyl-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile; 58

(*S)-3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo [1,5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxy]-1,1,1-trifluoro-2-methyl-propan-2-ol; (*R)-3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxy]-1,1,1-trifluoro-2-methyl-propan-2-ol; 2-(cyclopropylmethyl)-6-[[5-[5-(2-hydroxy-2-methyl-propoxy)- 2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-4-methyl-pyridazi n-3-one; N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(4-methylsulfon ylcyclohexoxy)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; (rac-)-5-[5-(2-amino-3,3,3-trifluoro-2-methyl-propoxy)-2-met hyl-4-pyridyl]-N-(2,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine; 4-[[5-[5-(2-cyano-2-methyl-propoxy)-2-methyl-4-pyridyl]pyraz olo[1,5-a]pyridin-2-yl]amino]- N-cyclopropyl-2,6-dimethoxy-benzamide; 3-[[4-[2-[(1,5-dimethyl-6-oxo-pyridazin-3-yl)amino]pyrazolo[ 1,5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile; (*R)-5-[5-(2-Amino-3,3,3-trifluoro-2-methyl-propoxy)-2-methy l-4-pyridyl]-N-(2,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine; N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(2-methoxyphenyl)methox y]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]phenol; N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(3-ethyloxetan-3-yl)met hoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; [3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a] pyridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]oxetan-3-yl]methanol; 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]oxetane-3-carbonitrile; N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[(3S)-pyrrolidi n-3-yl]oxy-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; N-[5-[2-methyl-5-[(3S)-pyrrolidin-3-yl]oxy-4-pyridyl]pyrazol o[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(3R,4S)-4-fluoropyrroli din-3-yl]oxy-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; N-[5-[5-[(3R,4S)-4-fluoropyrrolidin-3-yl]oxy-2-methyl-4-pyri dyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; 59

N-[5-[2-prop-1-ynyl-5-[(3S)-pyrrolidin-3-yl]oxy-4-pyridyl ]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-[(3R,4S)-4-fluoropyrrolidin-3-yl]oxy-2-prop-1-ynyl-4 -pyridyl]pyrazolo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide; 6-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]amino]-2-isobutyl-4-methyl-pyridazin-3-one; 2-[2-(difluoromethoxy)ethyl]-6-[[5-[5-(4-hydroxycyclohexoxy) -2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-4-methyl-pyridazi n-3-one; 2-[2-(difluoromethoxy)ethyl]-6-[[5-[5-(2-hydroxy-2-methyl-pr opoxy)-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-4-methyl-pyridazi n-3-one; 2-methyl-1-[[6-methyl-4-[2-[(6-methyl-2-pyrrolidin-1-yl-pyri midin-4-yl)amino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]propan-2-ol; 2-methyl-1-[[6-methyl-4-[2-[(6-methyl-2-morpholino-pyrimidin -4-yl)amino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]propan-2-ol; 4-[[6-methyl-4-[2-[(6-methyl-2-pyrrolidin-1-yl-pyrimidin-4-y l)amino]pyrazolo[1,5-a]pyridin-5- yl]-3-pyridyl]oxy]cyclohexanol; 4-[[6-methyl-4-[2-[(6-methyl-2-morpholino-pyrimidin-4-yl)ami no]pyrazolo[1,5-a]pyridin-5- yl]-3-pyridyl]oxy]cyclohexanol; 4-[[6-methyl-4-[2-(5H-pyrrolo[2,3-b]pyrazin-3-ylamino)pyrazo lo[1,5-a]pyridin-5-yl]-3- pyridyl]oxy]cyclohexanol; (1r,4r)-4-((6-methyl-4-(2-(pyridin-3-ylamino)pyrazolo[1,5-a] pyridin-5-yl)pyridin-3- yl)oxy)cyclohexan-1-ol; 2-methyl-1-[[6-methyl-4-[2-(5H-pyrrolo[2,3-b]pyrazin-3-ylami no)pyrazolo[1,5-a]pyridin-5-yl]- 3-pyridyl]oxy]propan-2-ol; 2-methyl-1-[[6-methyl-4-[2-[(1-methylpyrazolo[3,4-b]pyridin- 3-yl)amino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]propan-2-ol; 2-ethyl-6-[[5-[5-[[(2R,3S)-3-hydroxytetrahydrofuran-2-yl]met hoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-4-methyl-pyridazi n-3-one; (2R,3S)-2-[[6-methyl-4-[2-[(6-methyl-2-morpholino-pyrimidin- 4-yl)amino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxymethyl]tetrahydrofuran-3-ol; (2R,3S)-2-[[4-[2-[[5-(difluoromethyl)pyrazin-2-yl]amino]pyra zolo[1,5-a]pyridin-5-yl]-6- methyl-3-pyridyl]oxymethyl]tetrahydrofuran-3-ol; 2-[2-(difluoromethoxy)ethyl]-6-[[5-[5-[[(2R,3S)-3-hydroxytet rahydrofuran-2-yl]methoxy]-2- methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-4-methyl -pyridazin-3-one; 60

(2R,3S)-2-[[6-methyl-4-[2-[(6-methylpyrazin-2-yl)amino]py razolo[1,5-a]pyridin-5-yl]-3- pyridyl]oxymethyl]tetrahydrofuran-3-ol; (2R,3S)-2-[[4-[2-[(2-tert-butyl-6-methyl-pyrimidin-4-yl)amin o]pyrazolo[1,5-a]pyridin-5-yl]-6- methyl-3-pyridyl]oxymethyl]tetrahydrofuran-3-ol; (2R,3S)-2-[[6-methyl-4-[2-[(1-methylindazol-3-yl)amino]pyraz olo[1,5-a]pyridin-5-yl]-3- pyridyl]oxymethyl]tetrahydrofuran-3-ol; (2R,3S)-2-[[4-[2-[(1-methylpyrazol-4-yl)amino]pyrazolo[1,5-a ]pyridin-5-yl]-6-prop-1-ynyl-3- pyridyl]oxymethyl]tetrahydrofuran-3-ol; (2R,3S)-2-[[4-[2-[(1-methylpyrazol-3-yl)amino]pyrazolo[1,5-a ]pyridin-5-yl]-6-prop-1-ynyl-3- pyridyl]oxymethyl]tetrahydrofuran-3-ol; N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[[(1S,4S)-5-oxa-2-azabic yclo[2.2.1]heptan-4-yl]methoxy]- 2-prop-1-ynyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 5-[2-chloro-5-[[(1S,4S)-5-oxa-2-azabicyclo[2.2.1]heptan-4-yl ]methoxy]-4-pyridyl]-N-(2,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine; (*S)-5-[5-(2-amino-3,3,3-trifluoro-2-methyl-propoxy)-2-methy l-4-pyridyl]-N-(2,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine; 2,4-dimethyl-6-((5-(2-methyl-5-(((1s,4s)-4-(methylsulfonyl)c yclohexyl)oxy)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)amino)pyridazin-3(2H)-one; 2,4-dimethyl-6-((5-(2-methyl-5-(((1r,4r)-4-(methylsulfonyl)c yclohexyl)oxy)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)amino)pyridazin-3(2H)-one; 2,2-dimethyl-3-[[6-methyl-4-[2-(1H-pyrrolo[2,3-b]pyridin-6-y lamino)pyrazolo[1,5-a]pyridin-5- yl]-3-pyridyl]oxy]propanenitrile; 3-[[4-[2-(imidazo[1,2-b]pyridazin-6-ylamino)pyrazolo[1,5-a]p yridin-5-yl]-6-methyl-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile; 2,2-dimethyl-3-[[6-methyl-4-[2-[[6-methyl-2-(methylamino)pyr imidin-4- yl]amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]propanen itrile; 3-[[4-[2-[(2-cyclopropyl-6-methyl-pyrimidin-4-yl)amino]pyraz olo[1,5-a]pyridin-5-yl]-6- methyl-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; (*R)-6-[[5-[5-(2-amino-3,3,3-trifluoro-2-methyl-propoxy)-2-m ethyl-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]amino]-2,4-dimethyl-pyridazin-3-one; (*S)-6-[[5-[5-(2-amino-3,3,3-trifluoro-2-methyl-propoxy)-2-m ethyl-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]amino]-2,4-dimethyl-pyridazin-3-one; 1-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]cyclopropanecarboxamide; 61

5-[5-(3-aminocyclobutoxy)-2-methyl-4-pyridyl]-N-(2,6-dime thylpyrimidin-4-yl)pyrazolo[1,5- a]pyridin-2-amine; 4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-methyl-3- pyridyl]oxy]-2,2-dimethyl-butanenitrile; 3-[[4-[2-[(1-cyclopropyl-5-methyl-6-oxo-pyridazin-3-yl)amino ]pyrazolo[1,5-a]pyridin-5-yl]-6- methyl-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 2-cyclopropyl-6-[[5-[5-[[(2R,3S)-3-hydroxytetrahydrofuran-2- yl]methoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-4-methyl-pyridazi n-3-one; 2-cyclopropyl-6-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyr idyl]pyrazolo[1,5-a]pyridin-2- yl]amino]-4-methyl-pyridazin-3-one; N-[5-[2-methyl-5-[[(1S,5R)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-c]pyrimidin-2-yl]cyclopropanecarboxamid e; 6-[2-methyl-5-[[(1S,5R)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl] oxy]-4-pyridyl]-N-(5- methylpyrazin-2-yl)imidazo[1,2-a]pyrazin-2-amine; 6-[2-methyl-5-[[(1S,5R)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl] oxy]-4-pyridyl]-N-(6- methylpyrazin-2-yl)imidazo[1,2-a]pyrazin-2-amine; 6-[2-methyl-5-[[(1S,5R)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl] oxy]-4-pyridyl]-N-(1- methylpyrazol-4-yl)imidazo[1,2-a]pyrazin-2-amine; N-cyclopropyl-4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyr idyl]pyrazolo[1,5-a]pyridin-2- yl]amino]benzenesulfonamide; 4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]pyrazolo[ 1,5-a]pyridin-2-yl]amino]-N,N- dimethyl-benzenesulfonamide; rac--4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]-1,5,5-trimethyl-pyrrolidin-2-one; N-cyclopropyl-4-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl -4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]amino]-2,6-dimethyl-benzamide; 1-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-(fluoromethyl)-3- pyridyl]oxy]-2-methyl-propan-2-ol; 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-ethyl-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)am ino]pyrazolo[1,5-a]pyridin-5- yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]pyrazolo[ 1,5-a]pyridin-2-yl]amino]-N- isopropyl-2,6-dimethoxy-benzamide; 62

4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]pyrazo lo[1,5-a]pyridin-2-yl]amino]-2,6- dimethoxy-N-methyl-benzamide; 4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]pyrazolo[ 1,5-a]pyridin-2-yl]amino]-2,6- dimethoxy-N,N-dimethyl-benzamide; N-cyclopropyl-2-(difluoromethoxy)-4-[[5-[5-(4-hydroxycyclohe xoxy)-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-6-methoxy-benzami de; N-cyclopropyl-6-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyr idyl]pyrazolo[1,5-a]pyridin-2- yl]amino]-2,4-dimethyl-pyridine-3-carboxamide; N-cyclopropyl-6-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl -4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]amino]-2,4-dimethyl-pyridine-3-carboxamide; (1S,5R)-7-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo [1,5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxy]-3-oxa-9-azabicyclo[3.3.1]nonane-9-carbonitrile; 2,4-dimethyl-6-[[5-[2-methyl-5-[[(1S,5R)-3-oxa-9-azabicyclo[ 3.3.1]nonan-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridazin-3-one; N-(3-fluoro-4-methyl-2-pyridyl)-5-[2-methyl-5-[[(1S,5R)-3-ox a-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; N-[5-[5-[[(1S,5R)-9-acetyl-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; N-isopropyl-2,6-dimethoxy-4-[[5-[2-methyl-5-[[(1S,5R)-3-oxa- 9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]benzamid e; N-isopropyl-2-methyl-5-[[5-[2-methyl-5-[[(1S,5R)-3-oxa-9-aza bicyclo[3.3.;1]nonan-7-yl]oxy]- 4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyrazole-3-carbo xamide (4R)-4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]oxazolidin-2-one; 4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-methyl-3- pyridyl]oxy]cyclohexanecarboxamide; N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(3R)-1,1-dioxothiolan-3 -yl]oxy-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 4-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]amino]-N-isopropyl-2-methyl-benzamide; (3*R,6*S)-6-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazo lo[1,5-a]pyridin-5-yl]-6-methyl- 3-pyridyl]oxymethyl]tetrahydropyran-3-ol; (3*S,6*S)-6-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazo lo[1,5-a]pyridin-5-yl]-6-methyl- 3-pyridyl]oxymethyl]tetrahydropyran-3-ol; 63

N-(2,6-dimethylpyrimidin-4-yl)-6-[2-methyl-5-[[(1R,5S)-3- oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]imidazo[1,2-a]pyrazin-2-amine; N-(2,6-dimethylpyrimidin-4-yl)-6-[2-methyl-5-[[(1R,5S)-9-met hyl-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]imidazo[1,2-a]pyr azin-2-amine; (3*R, 5*S)-5-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]-6- methyl-3-pyridyl]oxymethyl]tetrahydropyran-3-ol; (RS)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(1,1-dioxo-1,2,5-t hiadiazolidin-3-yl)methoxy]-2- methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; (RS)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(1,1-dioxo-1,2-thi azolidin-3-yl)methoxy]-2-methyl- 4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; (*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(2-methyl- 1,1-dioxo-thiazinan-4-yl)oxy-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(2-methyl- 1,1-dioxo-thiazinan-4-yl)oxy-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 6-[[5-[5-[[(1S,5R)-9-acetyl-3-oxa-9-azabicyclo[3.3.1]nonan-7 -yl]oxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-N-methyl-pyridine -3-carboxamide; 2,6-dimethoxy-N-methyl-4-[[5-[2-methyl-5-[[(1S,5R)-3-oxa-9-a zabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]benzamid e; 6-[[5-[5-[[(1R,5S,7s)-9-acetyl-3-oxa-9-azabicyclo[3.3.1]nona n-7-yl]oxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-N,2,4-trimethyl-p yridine-3-carboxamide; 5-[5-(2-amino-2-methyl-propoxy)-2-methyl-4-pyridyl]-N-(2,6-d imethylpyrimidin-4- yl)pyrazolo[1,5-a]pyridin-2-amine; N-[2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5- a]pyridin-5-yl]-6-methyl-3- pyridyl]oxy]-1,1-dimethyl-ethyl]acetamide; N-[2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5- a]pyridin-5-yl]-6-methyl-3- pyridyl]oxy]-1,1-dimethyl-ethyl]methanesulfonamide; 4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-prop-1-ynyl-3- pyridyl]amino]cyclohexanol; (*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(1,1-dioxothiolan- 3-yl)methoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(1,1-dioxothiolan- 3-yl)methoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; (4S)-4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]-1-methyl-imidazolidin-2-one; 64

5-[2-methyl-5-[[(1S,5R, 7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]-N-[6 - (trifluoromethyl)-2-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; N-methyl-6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3 .3.1]nonan-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridine-2-carboxa mide; 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N-pyridazin-4- yl-pyrazolo[1,5-a]pyridin-2-amine; N-(2-hydroxyethyl)-6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-az abicyclo[3.3.1]nonan-7-yl]oxy]- 4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridine-3-carbo xamide; 6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nona n-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridine-3-carboxy lic acid; N-(2-hydroxy-2-methyl-propyl)-6-[[5-[2-methyl-5-[[(1S,5R,7s) -3-oxa-9-azabicyclo[3.3.1]nonan- 7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridi ne-3-carboxamide; 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N-(2- methylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine; 6-[[5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nona n-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-N-(tetrahydropyra n-4-ylmethyl)pyridine-3- carboxamide; 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N-[5- (trifluoromethyl)-2-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4-yl)-N-(5- (trifluoromethyl)pyrazin-2-yl)pyrazolo[1,5-a]pyridin-2-amine ; 6-[[5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nona n-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridine-3-carboxa mide; 6-[[5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nona n-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-N-propyl-pyridine -3-carboxamide; 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N-[4- (trifluoromethyl)-2-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N-[1-methyl- 5-(trifluoromethyl)pyrazol-3-yl]pyrazolo[1,5-a]pyridin-2-ami ne; 5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N-(1- methyltriazol-4-yl)pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N-(5- methylpyrazin-2-yl)pyrazolo[1,5-a]pyridin-2-amine; 65

N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[[(1S,5R,7s) -3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; N,N-dimethyl-6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyc lo[3.3.1]nonan-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridine-3-carboxa mide; N-ethyl-6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3. 3.1]nonan-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridine-3-carboxa mide; N-ethyl-6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3. 3.1]nonan-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridazine-3-carbo xamide; N-ethyl-5-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3. 3.1]nonan-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyrazine-2-carboxa mide; N-(2-methoxyethyl)-6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-az abicyclo[3.3.1]nonan-7-yl]oxy]- 4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridine-3-carbo xamide; 6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nona n-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-N-tetrahydropyran -4-yl-pyridine-3-carboxamide; N-(2-cyano-2-methyl-propyl)-6-[[5-[2-methyl-5-[[(1S,5R,7s)-3 -oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridine -3-carboxamide; N-(2-hydroxy-2-methyl-propyl)-5-[[5-[2-methyl-5-[[(1S,5R,7s) -3-oxa-9-azabicyclo[3.3.1]nonan- 7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyrazi ne-2-carboxamide; 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4-yl)-N-(5- methylpyrimidin-2-yl)pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N-pyrazin-2- yl-pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N-(5- methylsulfonyl-2-pyridyl)pyrazolo[1,5-a]pyridin-2-amine 5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N-pyridazin-3- yl-pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N-pyrimidin- 4-yl-pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N-(6- methylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine; N-(5-fluoro-1-methyl-pyrazol-3-yl)-5-[2-methyl-5-[[(1S,5R,7s )-3-oxa-9-azabicyclo[3.3.1]nonan- 7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; N-(3-fluoro-1-methyl-pyrazol-4-yl)-5-[2-methyl-5-[[(1S,5R,7s )-3-oxa-9-azabicyclo[3.3.1]nonan- 7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 66

N-(4-fluoro-1-methyl-pyrazol-3-yl)-5-[2-methyl-5-[[(1S,5R ,7s)-3-oxa-9-azabicyclo[3.3.1]nonan- 7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; N-[3-methyl-5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3. 3.1]nonan-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; 2-methyl-6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3 .3.1]nonan-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridazin-3-one; 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N-pyrimidin- 2-yl-pyrazolo[1,5-a]pyridin-2-amine; 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4-yl)-N-(1-methyl- 3-(trifluoromethyl)-1H-pyrazol-5-yl)pyrazolo[1,5-a]pyridin-2 -amine; N-(5-fluoropyrimidin-2-yl)-5-[2-methyl-5-[[(1S,5R,7s)-3-oxa- 9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4-yl)pyrazolo[1,5- a]pyridin-2-amine; 5-[2-methyl-5-[[(1S,5R,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]-4-pyridyl]-N- [6-(trifluoromethyl)-2-pyridyl]pyrazolo[1,5-a]pyridin-2-amin e; N-methyl-6-[[5-[2-methyl-5-[[(1S,5R,7s)-9-methyl-3-oxa-9-aza bicyclo[3.3.1]nonan-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridine-2-carboxa mide; 5-[2-methyl-5-[[(1S,5R,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]-4-pyridyl]-N- pyridazin-4-yl-pyrazolo[1,5-a]pyridin-2-amine; N-methyl-2-[[5-[2-methyl-5-[[(1S,5R,7s)-9-methyl-3-oxa-9-aza bicyclo[3.3.1]nonan-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridine-4-carboxa mide; 5-[2-methyl-5-[[(1R,5S,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]-4-pyridyl]-N- (2-methylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(1S,5R,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]-4-pyridyl]-N- [5-(trifluoromethyl)-2-pyridyl]pyrazolo[1,5-a]pyridin-2-amin e; N-(3-fluoro-1-methyl-pyrazol-4-yl)-5-[2-methyl-5-[[(1S,5R,7s )-9-methyl-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-amine; 5-[2-methyl-5-[[(1R,5S,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]-4-pyridyl]-N- [4-(trifluoromethyl)-2-pyridyl]pyrazolo[1,5-a]pyridin-2-amin e; 5-[2-methyl-5-[[(1R,5S,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]-4-pyridyl]-N- (1-methyltriazol-4-yl)pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(1S,5R,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]-4-pyridyl]-N- pyrimidin-5-yl-pyrazolo[1,5-a]pyridin-2-amine; 67

5-[2-methyl-5-[[(1S,5R,7s)-9-methyl-3-oxa-9-azabicyclo[3. 3.1]nonan-7-yl]oxy]-4-pyridyl]-N- (5-methylpyrazin-2-yl)pyrazolo[1,5-a]pyridin-2-amine; N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[[(1S,5R,7s)-9- methyl-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-amine; 5-[2-methyl-5-[[(1S,5R,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]-4-pyridyl]-N- pyrazin-2-yl-pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(1R,5S,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]-4-pyridyl]-N- pyridazin-3-yl-pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(1R,5S,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]-4-pyridyl]-N- pyrimidin-4-yl-pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(1R,5S,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]-4-pyridyl]-N- (6-methylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(1S,5R,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]-4-pyridyl]-N- (1-methylpyrazol-3-yl)pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(1S,5R,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]-4-pyridyl]-N- (1-methylpyrazol-3-yl)pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-[5 -(trifluoromethyl)-2- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-(5 -methyl-2-pyridyl)pyrazolo[1,5- a]pyridin-2-amine; 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-(6 -methyl-2-pyridyl)pyrazolo[1,5- a]pyridin-2-amine; 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-(4 -methyl-2-pyridyl)pyrazolo[1,5- a]pyridin-2-amine; 5-[2-methyl-5-[[(2R)-morpholin-2-yl]methoxy]-4-pyridyl]-N-(2 -pyridyl)pyrazolo[1,5- a]pyridin-2-amine; 5-[2-methyl-5-[[(2R)-morpholin-2-yl]methoxy]-4-pyridyl]-N-(1 -methylpyrazol-3- yl)pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(2R)-morpholin-2-yl]methoxy]-4-pyridyl]-N-py razin-2-yl-pyrazolo[1,5- a]pyridin-2-amine; 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-py razin-2-yl-pyrazolo[1,5- a]pyridin-2-amine; N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[[(2S)-morpholi n-2-yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 68

N-[5-[5-[(3-aminooxetan-3-yl)methoxy]-2-prop-1-ynyl-4-pyr idyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-[(3-fluoroazetidin-3-yl)methoxy]-2-prop-1-ynyl-4-pyr idyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-(5-(5-((1r,3r)-3-aminocyclobutoxy)-2-(prop-1-yn-1-yl)pyrid in-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide; N-[5-[5-[[(1S,5R)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl]oxy]-2 -prop-1-ynyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; 5-[5-[(3-fluoroazetidin-3-yl)methoxy]-2-prop-1-ynyl-4-pyridy l]-N-(1-methylpyrazol-3- yl)pyrazolo[1,5-a]pyridin-2-amine; N-(1-methylpyrazol-3-yl)-5-[5-[[(1S,5R)-3-oxa-9-azabicyclo[3 .3.1]nonan-7-yl]oxy]-2-prop-1- ynyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; N-[5-[5-[[(1S,5R)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl]oxy]-2 -prop-1-ynyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[[(1S,4S,7R)-2-oxa-5-aza bicyclo[2.2.1]heptan-7-yl]oxy]-2- prop-1-ynyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; N-[5-[5-[[(3R)-1-methylpyrrolidin-3-yl]methoxy]-2-prop-1-yny l-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[5-(1-methylazetidin-3-yl)oxy-2-prop-1-ynyl-4-pyridyl]p yrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-[[(2S)-morpholin-2-yl]methoxy]-2-prop-1-ynyl-4-pyrid yl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-(5-(5-((1r,3r)-3-amino-3-methylcyclobutoxy)-2-methylpyridi n-4-yl)pyrazolo[1,5-a]pyridin- 2-yl)cyclopropanecarboxamide; N-[5-[2-methyl-5-[[(3*S,5*R)-5-(trifluoromethyl)-3-piperidyl ]oxy]-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-methyl-5-[[(3*R,5*S)-5-(trifluoromethyl)-3-piperidyl ]oxy]-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide ; (*R)-N-[5-[5-[(3-fluoropyrrolidin-3-yl)methoxy]-2-methyl-4-p yridyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; (*S)-N-[5-[5-[(3-fluoropyrrolidin-3-yl)methoxy]-2-methyl-4-p yridyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; *R-N-[5-[5-[(3-fluoro-1-methyl-pyrrolidin-3-yl)methoxy]-2-me thyl-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; 69

(*S)-N-[5-[5-[(1,2-dimethylazetidin-2-yl)methoxy]-2-methy l-4-pyridyl]pyrazolo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide; N-[5-[5-[[(2R)-1-ethylazetidin-2-yl]methoxy]-2-methyl-4-pyri dyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-methyl-5-[[(2R)-1-(2,2,2-trifluoroethyl)azetidin-2-y l]methoxy]-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; (*S, *S)-N-[5-[5-(2-ethylazetidin-3-yl)oxy-2-methyl-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; (*R)-N-[5-[2-methyl-5-[(2R)-3,3,3-trifluoro-2-hydroxy-propox y]-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; *R, *R-N-[5-[5-(1,2-dimethylazetidin-3-yl)oxy-2-methyl-4-pyridyl ]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; (*S, *S)-N-[5-[5-(1,2-dimethylazetidin-3-yl)oxy-2-methyl-4-pyridy l]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-[[1-(2-fluoroethyl)azetidin-3-yl]methoxy]-2-methyl-4 -pyridyl]pyrazolo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide; Trans-*R, *R-N-[5-[5-[(4-methoxypyrrolidin-3-yl)methoxy]-2-methyl-4-py ridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; Cis-RS-N-[5-[5-[(4-methoxypyrrolidin-3-yl)methoxy]-2-methyl- 4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-methyl-5-[[(1S,5R)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; Trans-*R, *R-N-[5-[5-[(4-methoxy-1-methyl-pyrrolidin-3-yl)methoxy]-2-m ethyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-methyl-5-[[(1S,5R)-9-(trideuteriomethyl)-3-oxa-9-aza bicyclo[3.3.1]nonan-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; (1R,2R)-2-methyl-N-[5-[2-methyl-5-[[(1S,4S,7R)-2-oxa-5-azabi cyclo[2.2.1]heptan-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; N-(5-(5-((1s,3s)-3-aminocyclobutoxy)-2-methylpyridin-4-yl)py razolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide; N-[5-[5-[(2R)-2-amino-2-phenyl-ethoxy]-2-methyl-4-pyridyl]py razolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-[(1S)-2-amino-1-phenyl-ethoxy]-2-methyl-4-pyridyl]py razolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; 70

N-[5-[5-[(2S)-2-amino-2-phenyl-ethoxy]-2-methyl-4-pyridyl ]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-methyl-5-[[(2R)-1-methylazetidin-2-yl]methoxy]-4-pyr idyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; rac--N-[5-[5-[(3,3-difluoroazetidin-2-yl)methoxy]-2-methyl-4 -pyridyl]pyrazolo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide; N-[5-[2-methyl-5-[(3-phenylazetidin-3-yl)methoxy]-4-pyridyl] pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-[[(2S)-3,3-dimethylazetidin-2-yl]methoxy]-2-methyl-4 -pyridyl]pyrazolo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide; Racemic-N-[5-[2-methyl-5-(7-oxa-2-azaspiro[3.5]nonan-3-ylmet hoxy)-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-methyl-5-[[(2S)-1,3,3-trimethylazetidin-2-yl]methoxy ]-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[5-methyl-2-[[(2S)-morpholin-2-yl]methoxy]-3-pyridyl]py razolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; 3-[[6-(difluoromethoxy)-4-[2-([1,2,4]triazolo[1,5-a]pyridin- 7-ylamino)pyrazolo[1,5-a]pyridin- 5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; N-[5-[5-cyano-2-[[(3R)-pyrrolidin-3-yl]methoxy]phenyl]pyrazo lo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; (2*R, 1*S)-N-[5-[5-cyano-2-(1-morpholin-2-ylethoxy)phenyl]pyrazolo [1,5-a]pyridin-2- yl]cyclopropanecarboxamide; 4-[[(2R)-morpholin-2-yl]methoxy]-3-[2-(2-pyridylamino)pyrazo lo[1,5-a]pyridin-5- yl]benzonitrile; N-[5-[2-[[(1R,5S)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl]oxy]-5 -prop-1-ynyl- phenyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-[[(1R,5S)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl]oxy]-5 -propanoyl-phenyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[5-(difluoromethyl)-2-[[(1R,5S)-3-oxa-9-azabicyclo[3.3. 1]nonan-7- yl]oxy]phenyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarbox amide; N-[5-[5-(difluoromethyl)-2-[[(1R,5S)-9-methyl-3-oxa-9-azabic yclo[3.3.1]nonan-7- yl]oxy]phenyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarbox amide; 3-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]pyrid in-5-yl]-4-(4- hydroxycyclohexoxy)benzonitrile; 71

3-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]py ridin-5-yl]-4-(2-hydroxy-2-methyl- propoxy)benzonitrile; N-[5-[6-chloro-3-(1-methylazetidin-3-yl)oxy-pyridazin-4-yl]p yrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; 5-[6-methyl-3-[[(1S,5R)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl] oxy]pyridazin-4-yl]-N-pyrazin-2- yl-pyrazolo[1,5-a]pyridin-2-amine; [4-[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-methyl-pyridazin- 3-yl]oxycyclohexyl] acetate; 4-[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]py ridin-5-yl]-6-methyl-pyridazin- 3-yl]oxycyclohexanol; N-[5-[3-[[(3R)-1-methylpyrrolidin-3-yl]methoxy]-4-pyridyl]py razolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-chloro-5-[[(3R)-1-methylpyrrolidin-3-yl]methoxy]-4-p yridyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-chloro-5-(1-methylazetidin-3-yl)oxy-4-pyridyl]pyrazo lo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-chloro-5-[[(1S,5R)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; 1-[[6-(difluoromethyl)-4-[2-[(2,6-dimethylpyrimidin-4-yl)ami no]pyrazolo[1,5-a]pyridin-5-yl]- 3-pyridyl]oxy]-2-methyl-propan-2-ol; 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-(trifluoromethyl)- 3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 5-[2-chloro-5-[[(1S,4S,7R)-2-oxa-5-azabicyclo[2.2.1]heptan-7 -yl]oxy]-4-pyridyl]-N-(2,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine; N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methoxy-5-[[(2S)-morphol in-2-yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 5-[2-chloro-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-(2 ,6-dimethylpyrimidin-4- yl)pyrazolo[1,5-a]pyridin-2-amine; (2R,3S)-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo [1,5-a]pyridin-5-yl]-6-methoxy- 3-pyridyl]oxymethyl]tetrahydrofuran-3-ol; (2R,3S)-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo [1,5-a]pyridin-5-yl]-6-(2,2,2- trifluoroethoxy)-3-pyridyl]oxymethyl]tetrahydrofuran-3-ol; 2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-5-[[(2R,3S)-3- hydroxytetrahydrofuran-2-yl]methoxy]-2-pyridyl]oxy]acetonitr ile; 72

N-(2,6-dimethylpyrimidin-4-yl)-5-[2-(methylamino)-5-[[(2S )-morpholin-2-yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 5-[2-(difluoromethoxy)-5-[[(2S)-morpholin-2-yl]methoxy]-4-py ridyl]-N-(2,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine; N-[5-[2-(difluoromethoxy)-5-[[(2S)-morpholin-2-yl]methoxy]-4 -pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[6-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]imidazo[1, 2-a]pyridin-2- yl]cyclopropanecarboxamide; N-[6-[2-methyl-5-[[(1S,5R)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]imidazo[1,2- a]pyrazin-2-yl]cyclopropanecarboxamide; 4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]imidazo[1,2-a]py razin-6-yl]-6-methyl-3- pyridyl]oxy]cyclohexanol; 4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]imidazo[1,2-a]py razin-6-yl]-6-methyl-3- pyridyl]oxy]cyclohexanol; N-[6-[5-(2-cyano-2-methyl-propoxy)-2-methyl-4-pyridyl]imidaz o[1,2-a]pyrazin-2- yl]cyclopropanecarboxamide; N-[5-[2-methyl-5-[[(3R)-1-methylpyrrolidin-3-yl]methoxy]-4-p yridyl]pyrazolo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide; N-[5-[5-[(3S)-2,2-dimethylazetidin-3-yl]oxy-2-methyl-4-pyrid yl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-(1-isopropylpyrazol-4-yl)-5-[2-methyl-5-(1-methylazetidin- 3-yl)oxy-4-pyridyl]pyrazolo[1,5- a]pyridin-2-amine; N-[5-[2-methyl-5-[[(2S)-1-methylazetidin-2-yl]methoxy]-4-pyr idyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; 5-[2-methyl-5-[[(2S,5R)-5-methylmorpholin-2-yl]methoxy]-4-py ridyl]-N-pyridazin-3-yl- pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(1S,5R)-8-methyl-8-azabicyclo[3.2.1]octan-3- yl]oxy]-4-pyridyl]-N-pyridazin-3- yl-pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(2S)-4-methylmorpholin-2-yl]methoxy]-4-pyrid yl]-N-pyrazin-2-yl- pyrazolo[1,5-a]pyridin-2-amine; (*R)-5-[5-[(6,6-dimethylmorpholin-2-yl)methoxy]-2-methyl-4-p yridyl]-N-pyridazin-3-yl- pyrazolo[1,5-a]pyridin-2-amine; N-[5-[5-(3-amino-3-methyl-cyclobutoxy)-2-methyl-4-pyridyl]py razolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; 73

5-[5-[[(2S)-6,6-dimethylmorpholin-2-yl]methoxy]-2-methyl- 4-pyridyl]-N-pyridazin-3-yl- pyrazolo[1,5-a]pyridin-2-amine; (*S)-N-[5-[5-[(3-fluoro-1-methyl-pyrrolidin-3-yl)methoxy]-2- methyl-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; 5-[5-(3-aminocyclobutoxy)-2-methyl-4-pyridyl]-N-pyridazin-3- yl-pyrazolo[1,5-a]pyridin-2- amine; N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[[(2S)-1-methyl azetidin-2-yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; (*R)-N-[5-[5-[(3-hydroxy-1-methyl-pyrrolidin-3-yl)methoxy]-2 -methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; 5-[2-methyl-5-[[(1S,4S,7R)-2-oxa-5-azabicyclo[2.2.1]heptan-7 -yl]oxy]-4-pyridyl]-N-(6- methylpyridazin-3-yl)pyrazolo[1,5-a]pyridin-2-amine; N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[[(1S,4S,7R)-2- oxa-5-azabicyclo[2.2.1]heptan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; N-(6-cyclopropylpyridazin-3-yl)-5-[2-methyl-5-[[(1S,4S,7R)-2 -oxa-5-azabicyclo[2.2.1]heptan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; N-[5-[5-[[(2S)-azetidin-2-yl]methoxy]-2-methyl-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[[(2R)-1-methyl azetidin-2-yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(1S,4S,7R)-2-oxa-5-azabicyclo[2.2.1]heptan-7 -yl]oxy]-4-pyridyl]-N-(5- methylpyrazin-2-yl)pyrazolo[1,5-a]pyridin-2-amine; N-[5-[5-[[(2R)-1-(2-fluoroethyl)azetidin-2-yl]methoxy]-2-met hyl-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; 6-[[5-[5-[[(1S,5R)-9-ethyl-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-N-methyl-pyridine -3-carboxamide; 6-[[5-[5-[[(1S,5R)-9-isopropyl-3-oxa-9-azabicyclo[3.3.1]nona n-7-yl]oxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-N-methyl-pyridine -3-carboxamide; 6-[[5-[5-[[(1S,5R)-9-(2-hydroxy-2-methyl-propyl)-3-oxa-9-aza bicyclo[3.3.1]nonan-7-yl]oxy]-2- methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-N-methyl -pyridine-3-carboxamide; (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-(5,5-dimethyltetrah ydrofuran-3-yl)oxy-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; (3*R, 4*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(4-methylt etrahydrofuran-3-yl)oxy- 4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 74

(*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[(3-met hyltetrahydrofuran-3-yl)methoxy]- 4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[(3-methyl tetrahydrofuran-3-yl)methoxy]- 4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 2-methyl-1-[[6-methyl-4-[2-[[6-methyl-2-(trifluoromethyl)pyr imidin-4-yl]amino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]propan-2-ol; (1r,3r)-3-(((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazol o[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)methyl)cyclobutan-1-ol; (*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(5,5-dimethyltetra hydrofuran-3-yl)methoxy]-2- methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(5,5-dimethyltetra hydrofuran-3-yl)methoxy]-2- methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 2-methyl-1-[[6-methyl-4-[2-[(5-methylpyrazin-2-yl)amino]pyra zolo[1,5-a]pyridin-5-yl]-3- pyridyl]oxy]propan-2-ol; (rac-)-4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[ 1,5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]-1-methyl-pyrrolidin-2-one; (*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-(6,9-dioxaspiro[4.4 ]nonan-8-ylmethoxy)-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-(6,9-dioxaspiro[4.4 ]nonan-8-ylmethoxy)-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 5-(5-((1r,3r)-3-aminocyclobutoxy)-2-methylpyridin-4-yl)-N-(2 ,6-dimethylpyrimidin-4- yl)pyrazolo[1,5-a]pyridin-2-amine; N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[(3-methyloxeta n-3-yl)methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; (*R)-4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]-1-methyl-pyrrolidin-2-one; (*R)-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxy]-1-(1-methylcyclopropyl)ethanol; (*S)-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxy]-1-(1-methylcyclopropyl)ethanol; N-(2,6-dimethylpyrimidin-4-yl)-5-[5-(1,1-dioxothian-4-yl)oxy -2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(4-methylsulfon ylcyclohexoxy)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 75

4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5- a]pyridin-5-yl]-6-methyl-3- pyridyl]oxy]cyclohexanecarbonitrile; 5-[5-[[2-(difluoromethoxy)phenyl]methoxy]-2-methyl-4-pyridyl ]-N-(2,6-dimethylpyrimidin-4- yl)pyrazolo[1,5-a]pyridin-2-amine; (3S)-4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxy]-2,3-dimethyl-butan-2-ol; 4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-methyl-3- pyridyl]oxy]-2-methyl-butan-2-ol; (1s,4s)-4-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo [1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)cyclohexane-1-carbonitrile; 5-[5-(2-aminoethoxy)-2-methyl-4-pyridyl]-N-(2,6-dimethylpyri midin-4-yl)pyrazolo[1,5- a]pyridin-2-amine; (1R)-1-cyclopropyl-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)ami no]pyrazolo[1,5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxy]ethanol; (1S)-1-cyclopropyl-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)ami no]pyrazolo[1,5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxy]ethanol; 1-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]cyclopropanecarbonitrile; 2-cyclopropyl-6-[[5-[5-[[(2S)-1,4-dioxan-2-yl]methoxy]-2-met hyl-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]amino]-4-methyl-pyridazin-3-one; (4S)-4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]-1,3-dimethyl-imidazolidin-2-one; N-[5-[2-cyano-5-[[(3R)-1-(cyanomethyl)pyrrolidin-3-yl]methox y]-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; 5-[2-[(1-methylpyrazol-3-yl)amino]pyrazolo[1,5-a]pyridin-5-y l]-6-[[(2S)-morpholin-2- yl]methoxy]pyridine-3-carbonitrile; N-[5-[2-cyano-5-[[(1R,5S)-9-methyl-3-oxa-9-azabicyclo[3.3.1] nonan-7-yl]amino]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; 3-[2-[(1-methylpyrazol-3-yl)amino]pyrazolo[1,5-a]pyridin-5-y l]-4-[[(2R)-morpholin-2- yl]methoxy]benzonitrile; 5-[2-methyl-5-(1-methylazetidin-3-yl)oxy-4-pyridyl]-N-(2-pyr idyl)pyrazolo[1,5-a]pyridin-2- amine; 5-[2-methyl-5-(1-methylazetidin-3-yl)oxy-4-pyridyl]-N-(1-met hylpyrazol-4-yl)pyrazolo[1,5- a]pyridin-2-amine; 76

(1*R, 3*R)-N-[5-[5-(3-hydroxycyclopentoxy)-2-methyl-4-pyridyl]pyra zolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-[(2R)-2-amino-3,3,3-trifluoro-propoxy]-2-methyl-4-py ridyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; (3RS, 4RS)-N-[5-[5-[(4-methoxy-1-methyl-pyrrolidin-3-yl)methoxy]-2 -methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-methyl-5-[[(2S)-1-methylpyrrolidin-2-yl]methoxy]-4-p yridyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[5-[[(2S)-1-(2-fluoroethyl)azetidin-2-yl]methoxy]-2-met hyl-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[5-[[(2R)-1-cyclopropylazetidin-2-yl]methoxy]-2-methyl- 4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-methyl-5-[[(2S)-1-(trideuteriomethyl)azetidin-2-yl]m ethoxy]-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-methyl-5-[[(2R)-1-(trideuteriomethyl)azetidin-2-yl]m ethoxy]-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; (*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-(5,5-dimethyltetrah ydrofuran-3-yl)oxy-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-(2,2-dimethyltetrah ydropyran-4-yl)oxy-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; N-[3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5- a]pyridin-5-yl]-6-methyl-3- pyridyl]oxy]cyclobutyl]methanesulfonamide; N-[3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5- a]pyridin-5-yl]-6-methyl-3- pyridyl]oxy]cyclobutyl]methanesulfonamide; (1r,4r)-4-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo [1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)cyclohexane-1-carbonitrile; (3*R, 6*R)-6-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]-6- methyl-3-pyridyl]oxymethyl]tetrahydropyran-3-ol; N-[5-(2-cyano-5-ethoxy-4-pyridyl)pyrazolo[1,5-a]pyridin-2-yl ]cyclopropanecarboxamide; N-[5-[2-cyano-5-(cyclopropylmethoxy)-4-pyridyl]pyrazolo[1,5- a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[[(3R)-3-piperidyl]methoxy]-4-pyridyl]pyrazo lo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; 77

N-(5-(5-(((1r,4r)-4-aminocyclohexyl)methoxy)-2-cyanopyrid in-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide; N-[5-[5-(6-azaspiro[3.3]heptan-2-yloxy)-2-cyano-4-pyridyl]py razolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[[(3R)-1-(2,2,2-trifluoroethyl)pyrrolidin-3- yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[[(3R)-1-cyclopropylpyrrolidin-3-yl]methoxy] -4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[1-(2,2,2-trifluoroethyl)azetidin-3-yl]oxy-4 -pyridyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-(5-(5-(((1r,3r)-3-aminocyclobutyl)methoxy)-2-cyanopyridin- 4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide; N-[5-[2-cyano-5-[[(2R)-morpholin-2-yl]methoxy]-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[[(3S)-3-piperidyl]methoxy]-4-pyridyl]pyrazo lo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[(3R)-pyrrolidin-3-yl]oxy-4-pyridyl]pyrazolo [1,5-a]pyridin-2- yl]cyclopropanecarboxamide; (1*S, 4*S, 5*R)-N-[5-[2-cyano-5-[(2-methyl-2-azabicyclo[2.2.1]heptan-5- yl)oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[[3-(cyanomethylamino)cyclobutyl]methoxy]-4- pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[[3-(cyclopropylamino)cyclobutyl]methoxy]-4- pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; ethyl 2-[[3-[[6-cyano-4-[2-(cyclopropanecarbonylamino)pyrazolo[1,5 -a]pyridin-5-yl]-3- pyridyl]oxymethyl]cyclobutyl]amino]acetate; N-[5-[5-[[3-(benzylamino)cyclobutyl]methoxy]-2-cyano-4-pyrid yl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; 1-[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]py ridin-5-yl]-6-methyl-pyridazin- 3-yl]oxy-2-methyl-propan-2-ol; N-[5-[5-[[(2S)-morpholin-2-yl]methoxy]-2-(trifluoromethyl)-4 -pyridyl]pyrazolo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide; (1*R, 3*S)-N-[5-[5-(3-hydroxycyclohexoxy)-2-methyl-4-pyridyl]pyraz olo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; 78

(*S)-N-[5-[5-(2-cyclopropyl-2-hydroxy-propoxy)-2-methyl-4 -pyridyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; (*R)-N-[5-[5-[(1,2-dimethylazetidin-2-yl)methoxy]-2-methyl-4 -pyridyl]pyrazolo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide; N-[5-[5-[[(2S)-1-ethylazetidin-2-yl]methoxy]-2-methyl-4-pyri dyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; (3S,5S)-5-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo [1,5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]tetrahydrofuran-3-ol; (*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(7-oxaspir o[3.4]octan-6-ylmethoxy)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; (*S)-3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]tetrahydropyran-3-ol; (3S,5R)-5-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo [1,5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]tetrahydrofuran-3-ol; (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-(1,1-dioxothiazinan -4-yl)oxy-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 5-[2-methyl-5-[[(2R)-4-methylmorpholin-2-yl]methoxy]-4-pyrid yl]-N-pyrazin-2-yl- pyrazolo[1,5-a]pyridin-2-amine; 2-methyl-1-[[6-methyl-4-[2-[(6-methylpyridazin-3-yl)amino]py razolo[1,5-a]pyridin-5-yl]-3- pyridyl]oxy]propan-2-ol; 1-[[4-[2-[(5-tert-butylpyrazin-2-yl)amino]pyrazolo[1,5-a]pyr idin-5-yl]-6-methyl-3- pyridyl]oxy]-2-methyl-propan-2-ol; N-cyclopropyl-2,6-difluoro-4-[[5-[5-(4-hydroxycyclohexoxy)-2 -methyl-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]amino]benzamide; N-cyclopropyl-2-fluoro-4-[[5-[5-(2-hydroxy-2-methyl-propoxy) -2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]benzamide; N-[5-[2-cyano-5-[[(3R)-1-ethylpyrrolidin-3-yl]methoxy]-4-pyr idyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-(6-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy )-2-methylpyridin-4- yl)imidazo[1,2-a]pyridin-2-yl)cyclopropanecarboxamide; N-(5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy )-2-(trifluoromethyl)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide; N-(5-(5-(((1R,5S,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1]nonan -7-yl)oxy)-2- (trifluoromethyl)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide; 79

N-[5-[5-[(1-amino-3,3-difluoro-cyclobutyl)methoxy]-2-(tri fluoromethyl)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; N-[5-[5-[(3-fluoroazetidin-3-yl)methoxy]-2-(trifluoromethyl) -4-pyridyl]pyrazolo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide; N-[5-[5-[(3-methoxyazetidin-3-yl)methoxy]-2-(trifluoromethyl )-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; 1-fluoro-N-[5-[2-methyl-5-[[(2R)-1-methylazetidin-2-yl]metho xy]-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; 2,2-difluoro-N-[5-[2-methyl-5-[[(2R)-1-methylazetidin-2-yl]m ethoxy]-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[[(2R)-1-methylazetidin- 2-yl]methoxy]-2- (trifluoromethyl)-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; N-cyclopropyl-4-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl -4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]amino]-2,6-dimethoxy-benzamide; 1-((1R,5S,7s)-7-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)py razolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonan-9-yl) ethan-1-one; 1-[(2S)-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo [1,5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]morpholin-4-yl]ethanone; N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[[(2S)-4-methyl sulfonylmorpholin-2- yl]methoxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; (S)-5-(2-methyl-5-((4-(methylsulfonyl)morpholin-2-yl)methoxy )pyridin-4-yl)-N-(2- methylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine; 2-((5-(5-(((1R,5S,7s)-9-acetyl-3-oxa-9-azabicyclo[3.3.1]nona n-7-yl)oxy)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-N-methylisonicotinamid e; 1-((1R,5S,7s)-7-((6-methyl-4-(2-((4-(trifluoromethyl)pyridin -2-yl)amino)pyrazolo[1,5-a]pyridin- 5-yl)pyridin-3-yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonan-9-yl)e than-1-one; 2-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]amino]-N,N,6-trimethyl-pyridine-4-carboxamide; 2-((5-(5-(((1R,5S,7s)-9-(cyclopropanecarbonyl)-3-oxa-9-azabi cyclo[3.3.1]nonan-7-yl)oxy)-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-N-meth ylisonicotinamide; 2-((5-(5-(((1R,5S,7s)-9-(cyclopropylsulfonyl)-3-oxa-9-azabic yclo[3.3.1]nonan-7-yl)oxy)-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-N-meth ylisonicotinamide; N-cyclopropyl-2-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl -4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]amino]-6-methyl-pyridine-4-carboxamide; 80

6-((5-(5-(((1R,5S,7s)-9-acetyl-3-oxa-9-azabicyclo[3.3.1]n onan-7-yl)oxy)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-2-methylpyridazin-3(2H )-one ; N-cyclopropyl-6-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl -4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]amino]-4-methyl-pyridine-2-carboxamide; N-cyclopropyl-6-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl -4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]amino]pyridine-3-carboxamide; N-cyclopropyl-4-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl -4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]amino]-6-methyl-pyrimidine-2-carboxamide; 3-[[6-(difluoromethoxy)-4-[2-[(2-methylpyrimidin-5-yl)amino] pyrazolo[1,5-a]pyridin-5-yl]-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile; methyl 4-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]amino]-2-methoxy-benzoate; N-cyclopropyl-4-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl -4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]amino]-2-methoxy-benzamide; 4-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]amino]-6-methyl-N-(2,2,2-trifluoroethyl)pyrimidine-2-carb oxamide; (1r,4r)-4-((4-(2-((3,5-dimethoxyphenyl)amino)pyrazolo[1,5-a] pyridin-5-yl)-6-methylpyridin-3- yl)oxy)cyclohexan-1-ol; 1-[[4-[2-(3,5-dimethoxyanilino)pyrazolo[1,5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxy]-2- methyl-propan-2-ol; 4-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]amino]-N-(2-hydroxy-2-methyl-propyl)-6-methyl-pyrimidine- 2-carboxamide; N-cyclopropyl-2-(difluoromethoxy)-4-[[5-[5-(2-hydroxy-2-meth yl-propoxy)-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-6-methoxy-benzami de; N-cyclopropyl-2-fluoro-4-((5-(5-(((1r,4r)-4-hydroxycyclohexy l)oxy)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-6-methoxybenzamide; 6-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]amino]-N-isopropyl-4-(trifluoromethyl)pyridine-3-carboxam ide; 6-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5-a]pyridin-2- yl]amino]-N-(2,2,2-trifluoroethyl)-4-(trifluoromethyl)pyridi ne-3-carboxamide; 1-[[4-[2-[(3-fluoro-4-methyl-2-pyridyl)amino]pyrazolo[1,5-a] pyridin-5-yl]-6-methyl-3- pyridyl]oxy]-2-methyl-propan-2-ol; N-[6-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]imidazo[1, 2-a]pyrazin-2- yl]cyclopropanecarboxamide; 81

N-[6-[2-methyl-5-(1-methylazetidin-3-yl)oxy-4-pyridyl]imi dazo[1,2-a]pyrazin-2- yl]cyclopropanecarboxamide; N-[6-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]imidazo[1, 2-a]pyrazin-2- yl]cyclopropanecarboxamide; N-[5-[2-cyano-5-[[(1R,5S,7s)-9-methyl-3-oxa-9-azabicyclo[3.3 .1]nonan-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide; 4-[[6-methyl-4-[2-[(6-methylpyrazin-2-yl)amino]imidazo[1,2-a ]pyrazin-6-yl]-3- pyridyl]oxy]cyclohexanol; N-(2,6-dimethylpyrimidin-4-yl)-5-[2-ethoxy-5-[[(2S)-morpholi n-2-yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-(2,2,2- trifluoroethoxy)-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(2,2-difluoroethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl )amino]pyrazolo[1,5-a]pyridin-5- yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 1-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-(2,2,2- trifluoroethoxy)-3-pyridyl]oxy]-2-methyl-propan-2-ol; N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[[(2S)-morpholin-2-yl]me thoxy]-2-(2,2,2- trifluoroethoxy)-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine; 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-isopropoxy-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile; 4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-(2,2,2- trifluoroethoxy)-3-pyridyl]oxy]cyclohexanol; N-[5-[5-(2-cyano-2-methyl-propoxy)-2-(difluoromethoxy)-4-pyr idyl]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-chloro-5-(2-cyano-2-methyl-propoxy)-4-pyridyl]pyrazo lo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; 3-[[6-(2,2-difluoroethylamino)-4-[2-[(2,6-dimethylpyrimidin- 4-yl)amino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-(methoxymethyl)- 3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; N-[5-[5-(2-cyano-2-methyl-propoxy)-2-(2,2,2-trifluoroethoxy) -4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-prop-1-ynyl-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile; 82

(2S,3R)-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyraz olo[1,5-a]pyridin-5-yl]-6-prop-1- ynyl-3-pyridyl]oxymethyl]tetrahydrofuran-3-ol; 3-[[6-(cyanomethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)amino ]pyrazolo[1,5-a]pyridin-5-yl]- 3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-(2-fluoroethoxy)- 3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-hydroxy-4-[2-[[6-methyl-2-(methylamino)pyrimidin-4-yl] amino]pyrazolo[1,5-a]pyridin- 5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-chloro-4-[2-[[6-methyl-2-(methylamino)pyrimidin-4-yl]a mino]pyrazolo[1,5-a]pyridin-5- yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-[[6-methyl-2-(methylamino)pyrim idin-4-yl]amino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; (1r,4r)-4-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin -4-yl)amino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]cyclohexanol; 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-(2- hydroxyethoxy)-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 1-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)am ino]pyrazolo[1,5-a]pyridin-5- yl]-3-pyridyl]oxy]-2-methyl-propan-2-ol; (*R)-3-[[6-(1-cyanoethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl )amino]pyrazolo[1,5-a]pyridin- 5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; (*S)-3-[[6-(1-cyanoethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl )amino]pyrazolo[1,5-a]pyridin-5- yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[4-[2-[(2-amino-6-methyl-pyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]-6- (difluoromethoxy)-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile ; 3-[[6-(difluoromethoxy)-4-[2-[(6-methylpyrazin-2-yl)amino]py razolo[1,5-a]pyridin-5-yl]-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-[(1,5-dimethyl-6-oxo-pyridazin- 3-yl)amino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-[(6-methylpyrimidin-4-yl)amino] pyrazolo[1,5-a]pyridin-5-yl]-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]cyclobutanecarbonitrile; 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]cyclobutanecarbonitrile; 83

3-[[6-(2,2-difluoroethoxy)-4-[2-(pyridazin-3-ylamino)pyra zolo[1,5-a]pyridin-5-yl]-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(2,2-difluoroethoxy)-4-[2-(pyrazin-2-ylamino)pyrazolo[ 1,5-a]pyridin-5-yl]-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile; 2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-5-(4- hydroxycyclohexoxy)-2-pyridyl]oxy]acetonitrile; 3-[[4-[2-[(6-aminopyrazin-2-yl)amino]pyrazolo[1,5-a]pyridin- 5-yl]-6-(difluoromethoxy)-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-[(1-methylpyrazol-4-yl)amino]py razolo[1,5-a]pyridin-5-yl]-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(2,2-difluoroethoxy)-4-[2-[(1,5-dimethyl-6-oxo-pyridaz in-3-yl)amino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-(3-pyridylamino)pyrazolo[1,5-a] pyridin-5-yl]-3-pyridyl]oxy]-2,2- dimethyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-[[5-(morpholinomethyl)-2-pyridy l]amino]pyrazolo[1,5-a]pyridin- 5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(2,2-difluoroethoxy)-4-[2-[(6-methylpyrazin-2-yl)amino ]pyrazolo[1,5-a]pyridin-5-yl]-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(2,2-difluoroethoxy)-4-[2-[(1-methyl-6-oxo-pyridazin-3 -yl)amino]pyrazolo[1,5-a]pyridin- 5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-[(4-methoxypyrimidin-2-yl)amino ]pyrazolo[1,5-a]pyridin-5-yl]- 3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-[(1-methyl-1,2,4-triazol-3-yl)a mino]pyrazolo[1,5-a]pyridin-5-yl]- 3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-[[2-(ethylamino)-6-(trifluorome thyl)pyrimidin-4- yl]amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dim ethyl-propanenitrile; 2-[[5-[5-(2-cyano-2-methyl-propoxy)-2-(difluoromethoxy)-4-py ridyl]pyrazolo[1,5-a]pyridin-2- yl]amino]-N-(2-hydroxy-2-methyl-propyl)-6-methyl-pyridine-4- carboxamide; 3-[[6-(difluoromethoxy)-4-[2-[(1-methyl-6-oxo-pyridazin-3-yl )amino]pyrazolo[1,5-a]pyridin-5- yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[4-[2-[(2-tert-butyl-6-methyl-pyrimidin-4-yl)amino]pyrazo lo[1,5-a]pyridin-5-yl]-6- (difluoromethoxy)-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile ; 3-[[4-[2-[(5-aminopyridazin-3-yl)amino]pyrazolo[1,5-a]pyridi n-5-yl]-6-(difluoromethoxy)-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile; 84

3-[[4-[2-[(2-aminopyrimidin-4-yl)amino]pyrazolo[1,5-a]pyr idin-5-yl]-6-(difluoromethoxy)-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-(4,5,6,7-tetrahydropyrazolo[1,5 -a]pyrazin-2- ylamino)pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dime thyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-(pyrazin-2-ylamino)pyrazolo[1,5 -a]pyridin-5-yl]-3-pyridyl]oxy]- 2,2-dimethyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-(pyridazin-3-ylamino)pyrazolo[1 ,5-a]pyridin-5-yl]-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-[(5-methylpyrazin-2-yl)amino]py razolo[1,5-a]pyridin-5-yl]-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-[(6-methyl-2-morpholino-pyrimid in-4-yl)amino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-[(6-methylpyridazin-3-yl)amino] pyrazolo[1,5-a]pyridin-5-yl]-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-[[6-(1-hydroxy-1-methyl-ethyl)p yridazin-3- yl]amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dim ethyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-[[5-(1-hydroxy-1-methyl-ethyl)p yrazin-2-yl]amino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-[(1-methylpyrazol-3-yl)amino]py razolo[1,5-a]pyridin-5-yl]-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile; 2-[[5-[5-(2-cyano-2-methyl-propoxy)-2-(difluoromethoxy)-4-py ridyl]pyrazolo[1,5-a]pyridin-2- yl]amino]-N,6-dimethyl-pyridine-4-carboxamide; 3-[[6-(difluoromethoxy)-4-[2-(5,6,7,8-tetrahydro-2,7-naphthy ridin-3-ylamino)pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-[(2-methylpyrimidin-4-yl)amino] pyrazolo[1,5-a]pyridin-5-yl]-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-(5,6,7,8-tetrahydro-2,6-naphthy ridin-3-ylamino)pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-[[6-(difluoromethoxy)-4-[2-(5,6,7,8-tetrahydro-1,7-naphthy ridin-2-ylamino)pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 1-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)am ino]pyrazolo[1,5-a]pyridin-5- yl]-3-pyridyl]oxymethyl]cyclopropanecarbonitrile; (*R)-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]-5-(4- hydroxycyclohexoxy)-2-pyridyl]oxy]propanenitrile; 85

3-[2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1 ,5-a]pyridin-5-yl]-6-methyl-3- pyridyl]oxy]ethyl]oxetane-3-carbonitrile; N-[5-[2-(difluoromethoxy)-5-(4-hydroxycyclohexoxy)-4-pyridyl ]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; N-[5-[2-(cyanomethoxy)-5-(2-cyano-2-methyl-propoxy)-4-pyridy l]pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide; 3-[[6-(2,2-difluoroethoxy)-4-[2-[[6-methyl-2-(methylamino)py rimidin-4- yl]amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dim ethyl-propanenitrile; (*S)-N-[5-[2-(1-cyanoethoxy)-5-(2-cyano-2-methyl-propoxy)-4- pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide; 3-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)am ino]pyrazolo[1,5-a]pyridin-5- yl]-3-pyridyl]oxy]-2,2-dimethyl-propanamide; 3-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)am ino]pyrazolo[1,5-a]pyridin-5- yl]-3-pyridyl]oxy]-N,N,2,2-tetramethyl-propanamide; 3-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)am ino]imidazo[1,2-a]pyrazin-6-yl]- 3-pyridyl]oxy]-2,2-dimethyl-propanenitrile; 3-((4-(2-((1-cyclopropyl-5-methyl-6-oxo-1,6-dihydropyridazin -3-yl)amino)pyrazolo[1,5- a]pyridin-5-yl)-6-(2,2-difluoroethoxy)pyridin-3-yl)oxy)-2,2- dimethylpropanenitrile; (*R)-4-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4- yl)amino]pyrazolo[1,5-a]pyridin- 5-yl]-3-pyridyl]oxymethyl]-5,5-dimethyl-pyrrolidin-2-one; (*S)-4-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4- yl)amino]pyrazolo[1,5-a]pyridin- 5-yl]-3-pyridyl]oxymethyl]-5,5-dimethyl-pyrrolidin-2-one; 5-[2-(difluoromethoxy)-5-(2-methyl-2-methylsulfonyl-propoxy) -4-pyridyl]-N-(2,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine; (*S)-4-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4- yl)amino]pyrazolo[1,5-a]pyridin- 5-yl]-3-pyridyl]oxymethyl]-1,5,5-trimethyl-pyrrolidin-2-one; N-[5-(2-methoxyphenyl)pyrazolo[1,5-a]pyridin-2-yl]cyclopropa necarboxamide; N-[5-(2-ethoxyphenyl)pyrazolo[1,5-a]pyridin-2-yl]cyclopropan ecarboxamide; N-[5-(2-methoxy-5-methyl-phenyl)pyrazolo[1,5-a]pyridin-2-yl] cyclopropanecarboxamide; N-[5-(2-methoxy-4-methyl-phenyl)pyrazolo[1,5-a]pyridin-2-yl] cyclopropanecarboxamide; N-[5-(2-methoxy-6-methyl-phenyl)pyrazolo[1,5-a]pyridin-2-yl] cyclopropanecarboxamide; N-[5-(2-methoxy-3-methyl-phenyl)pyrazolo[1,5-a]pyridin-2-yl] cyclopropanecarboxamide; 86

N-[5-(2-methoxy-3-pyridyl)pyrazolo[1,5-a]pyridin-2-yl]cyc lopropanecarboxamide; N-[5-(3-methoxy-4-pyridyl)pyrazolo[1,5-a]pyridin-2-yl]cyclop ropanecarboxamide; N-[5-(3-methoxy-2-pyridyl)pyrazolo[1,5-a]pyridin-2-yl]cyclop ropanecarboxamide; N-[5-(4-methoxy-3-pyridyl)pyrazolo[1,5-a]pyridin-2-yl]cyclop ropanecarboxamide; N-[5-(5-ethoxy-2-methyl-4-pyridyl)pyrazolo[1,5-a]pyridin-2-y l]cyclopropanecarboxamide; N-[5-(5-benzyloxy-2-cyano-4-pyridyl)pyrazolo[1,5-a]pyridin-2 -yl]cyclopropanecarboxamide; 3-[2-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]py ridin-5-yl]-4- (trifluoromethoxy)phenoxy]-2,2-dimethyl-propanenitrile; (*R)-5-[5-(2-amino-3,3,3-trifluoro-2-methyl-propoxy)-2-(difl uoromethoxy)-4-pyridyl]-N-(2,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine; and (*S)-5-[5-(2-amino-3,3,3-trifluoro-2-methyl-propoxy)-2-(difl uoromethoxy)-4-pyridyl]-N-(2,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine; or a tautomer, stereoisomer pharmaceutically acceptable salt, or solvate thereof. Methods of Preparation Compounds described herein can be prepared by any number of processes as described generally below and more specifically illustrated by the exemplary compounds which follow in the Examples section herein. The compounds provided herein as prepared in the processes described below can be synthesized in the form of mixtures of stereoisomers (e.g., enantiomers, diastereomers), including racemic mixtures of enantiomers, that can be separated from one another using art-known resolution procedures, for instance including liquid chromatography using a chiral stationary phase. Additionally or alternatively, stereochemically pure isomeric forms of the compounds described herein can be derived from the corresponding stereochemically pure isomeric forms of the appropriate starting materials, intermediates, or reagents. For example, if a specific stereoisomer is desired, the compound can be synthesized by stereospecific methods of preparation, which typically employ stereochemically pure starting materials or intermediate compounds. Pharmaceutically acceptable salts of compounds of the application can be synthesized from the parent compound containing an acidic or basic moiety by conventional chemical methods. Generally, such salts can be prepared by reacting the free acid or base forms of these compounds 87

with a stoichiometric amount of the appropriate acid or base in water or in an organic solvent, or in a mixture of the two. Examples of suitable organic solvents include, but are not limited to, ether, ethyl acetate (EtOAc), ethanol, isopropanol, or acetonitrile. By way of illustration, but not as a limitation, compounds of formula (I) described herein can be prepared according to the following general preparation procedures shown in Schemes 1 and 2. One of ordinary skill in the art will recognize that, to obtain various compounds of formula (I) as described herein, starting materials can be suitably selected so that the ultimately desired substituent groups will be carried through (i.e., be stable over the course of the synthesis) the reaction scheme with or without protection as appropriate to yield the desired product. Alternatively, it may be necessary or desirable to employ, in place of the ultimately desired substituent, a suitable group that may be carried through (i.e., be stable over the course of the synthesis) the reaction scheme and replaced as appropriate with the desired substituent. Unless otherwise specified, the variables in Schemes 1-2 are as defined above in reference to the various embodiments of compounds of formula (I). The following general features concerning reaction temperatures, protecting groups (PGs), leaving groups (LGs), and substituents R _1, R ₂ , R ₃ , R ₄ , R ₅ etc. refer, as applicable, to Schemes 1-2. If no temperature or temperature range is stated, it is to be understood that the reaction is to be conducted at room temperature. The term PG in the following Schemes 1-2 represents a protecting group. Examples of protecting groups suitable for use include, but are not limited to, acetyl (Ac), t-butylcarbamate (Boc), and t-butyldimethylsilyl (TBS). The term LG in the following Schemes 1-2 represents a leaving group. Examples of leaving groups suitable for use include, but are not limited to, halo (e.g., I, Cl, Br, F), mesylate (- OMs), triflate (-OTf), tosylate (-OTs), boronic acid, and boronate ester. When isomerically pure samples are desired, isomeric mixtures of compounds synthesized according to Scheme 1-2 can be separated by chiral supercritical fluid chromatography (SFC) or high performance liquid chromatography (HPLC). Scheme 1: Preparation of Compounds of Formula (I) 88

As shown in Scheme 1, a compound of formula (IV) is prepared from a compound of formula (IIIa) by reaction with an acid or activated acid derivative, under suitable amide bond forming conditions, wherein LG is, e.g., Br, Cl, OTf, or I. For example, reaction of an amine of formula (IIIa), wherein LG is Br, Cl, OTf, or I, and an acid or activated acid derivative, with an optional appropriate activating reagent, for example a carbodiimide, such as N,N'- dicyclohexylcarbodiimide (DCC) or 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDCI) optionally in the presence of hydroxybenzotriazole (HOBt) and/or a catalyst such as 4- Dimethylaminopyridine (DMAP); a halotrisaminophosphonium salt such as (Benzotriazol-1- yloxy)tris(dimethylamino)phosphonium hexafluorophosphate (BOP) or Bromotripyrrolidinophosphonium hexafluorophosphate (PyBroP); a suitable pyridinium salt such as 2-chloro-1-methyl pyridinium chloride; or another suitable coupling agent such as 3- [Bis(dimethylamino)methyliumyl]-3H-benzotriazol-1-oxide hexafluorophosphate (HBTU), 1- [Bis(dimethylamino)methylene]-1H-1,2,3-triazolo[4,5-b]pyridi nium 3-oxide hexafluorophosphate (HATU), and the like. Coupling reactions are conducted in a suitable solvent such as dichloromethane (DCM), tetrahydrofuran (THF), dimethylformamide (DMF) and the like, optionally in the presence of a tertiary amine such as N-methylmorpholine, N- ethyldiisopropylamine, or triethylamine (TEA), at a temperature ranging from about 0 °C to room temperature, to provide a compound of formula (IV). A compound of formula (V) is prepared from a compound of formula (IV) under suitable boronate forming conditions. For example, a compound of formula (IV) is treated with a borylating agent such as bis(pinacolato)diboron, in the presence of a palladium catalyst such as Pd(dppf)Cl2, and the like, and a suitable base, such as potassium acetate, and the like, employing conventional 89

heating, at a temperature such as 100 ºC, in a solvent such as 1,4-dioxane, and the like, to provide a compound of formula (V). A compound of formula (VI) is prepared from a compound of formula (V) by a metal- mediated cross coupling reaction. For example, a compound of formula (V) is reacted with a suitably substituted commercially available or synthetically accessible aryl boronic acid, boronate ester, and the like, in the presence of a palladium catalyst such as PdCl ₂ (dtbpf), Pd(PPh ₃ ) ₄ , PdCl ₂ (dppf), Pd(PPh ₃ ) ₂ Cl ₂ , Pd(OAc) ₂ , and the like, with or without the addition of a ligand such as 1,1'-Bis(diphenylphosphino)ferrocene (DPPF); a base such as K3PO4, K2CO3, aq. Na2CO3, Na2CO3, Cs2CO3, and the like; in a suitable solvent such as 1,2-dimethoxyethane, 1,4-dioxane, DMF, water, or a mixture thereof; at a temperature ranging from 60 to 180 °C, employing microwave or conventional heating; for a period of about 30 min to 16 hours, to provide a compound of Formula (VI), wherein X is halo, e.g., Cl or F. A compound of formula (VI) is reacted with a suitable nucleophile such as an alcohol with or without a suitable base such as TEA, Cs ₂ CO ₃ , K ₂ CO ₃ , or sodium hydride in a suitable solvent such as DMF, THF, dimethylacetamide (DMA), DCM, and the like, for a period of 1-16 hours, in a nucleophilic aromatic substitution reaction (SnAr) to provide a compound of formula (I). In a preferred embodiment, the base is sodium hydride. Conversion of compounds of formula (I), wherein R ¹ contains a protected or unprotected amine, to a compound of formula (I), the amine may be substituted with methyl or alkyl, is achieved with a suitable aldehyde or ketone or similar equivalents such as paraformaldehyde, acetaldehyde and a reducing agent such as NaBH(OAc)3, NaBH4, NaCNBH3 and the like, in a solvent such as THF, DCM, MeOH and the like, for a period of 12-20 hours. Scheme 2: Preparation of Compounds of Formula (I) As shown in Scheme 2, a compound of formula (VII) is prepared from a compound of formula (IIIa), wherein LG is, e.g., Br, Cl, F, I, boronic acid or boronate ester, by a metal-mediated cross coupling reaction with a suitably substituted commercially available or synthetically accessible aryl-halide, aryl-boronic acid, aryl boronate ester, and the like, wherein X is halo, e.g., 90

F or Cl. For example, a compound of formula (IIIa), is reacted with a suitably substituted commercially available or synthetically accessible aryl boronic acid, boronate ester, and the like, in the presence of a palladium catalyst such as PdCl ₂ (dtbpf), Pd(PPh ₃ ) ₄ , PdCl ₂ (dppf), Pd(PPh ₃ ) ₂ Cl ₂ , Pd(OAc) ₂ , and the like; with or without the addition of a ligand such as DPPF; a base such as K3PO4, K2CO3, aq. Na2CO3, Na2CO3, Cs2CO3, and the like; in a suitable solvent such as 1,2- dimethoxyethane, 1,4-dioxane, DMF, dioxane, THF, water, or a mixture thereof; at a temperature ranging from 60 to 180 °C, employing microwave or conventional heating; for a period of about 30 min to 16 hours, to provide a compound of Formula (VII). A compound of formula (VII) is reacted with a suitable nucleophile such as an amine or alcohol with or without a suitable base such as TEA, Cs ₂ CO ₃ , K ₂ CO ₃ , or sodium hydride in a suitable solvent such as DMF, THF, DMA, DCM, and the like, for a period of 1-16 hours, to provide a compound of formula (VIII) via an aromatic nucleophilic substitution reaction (SnAr). A compound of formula (VIII) is then reacted under metal-mediated cross coupling conditions to form a compound of formula (I). For example, a compound of formula (VIII) is reacted with a commercially available or synthetically accessible suitably substituted aryl or heteroaryl; in the presence of a palladium catalyst such as RuPhos Pd G3, Pd(Ph ₃ P) ₄ , Pd(dppf)Cl _2, PdCl ₂ (dppf)-CH ₂ Cl ₂ , PdCl ₂ (dtbpf) _, and the like; a suitable base such a sodium carbonate (Na2CO3), potassium phosphate, cesium carbonate (Cs2CO3), potassium carbonate (K2CO3) and the like; in a solvent such as 1,4-dioxane, water, or a mixture thereof, employing conventional or microwave heating at temperatures ranging from room temperature to 100 °C for a period of 1 h to 18 h, to give a compound of formula (I). Conversion of compounds of formula (I), where R ¹ contains a protected or unprotected amine, to a compound of formula (I), wherein amine is substituted with methyl or alkyl, is achieved with a suitable aldehyde or ketone or similar equivalents such as paraformaldehyde, acetaldehyde, a reducing agent such as NaBH(OAc)3, NaBH4, NaCNBH3 and the like, in a solvent such as THF, DCM, MeOH and the like, for a period of 12-20 hours. Compositions In another aspect, provided is a pharmaceutical composition comprising a compound of formula (I), or a tautomer, stereoisomer, pharmaceutically acceptable salt or solvate thereof, as described herein. 91

Compositions can also comprise a pharmaceutically acceptable carrier. A pharmaceutically acceptable carrier is non-toxic and should not interfere with the efficacy of the active ingredient. Pharmaceutically acceptable carriers can include one or more excipients such as binders, disintegrants, swelling agents, suspending agents, emulsifying agents, wetting agents, lubricants, flavorants, sweeteners, preservatives, dyes, solubilizers and coatings. The precise nature of the carrier or other material can depend on the route of administration, e.g., intramuscular, intradermal, subcutaneous, oral, intravenous, cutaneous, intramucosal (e.g., gut), intranasal or intraperitoneal routes. For liquid injectable preparations, for example, suspensions and solutions, suitable carriers and additives include water, glycols, oils, alcohols, preservatives, coloring agents and the like. For solid oral preparations, for example, powders, capsules, caplets, gelcaps and tablets, suitable carriers and additives include starches, sugars, diluents, granulating agents, lubricants, binders, disintegrating agents and the like. For nasal sprays/inhalant mixtures, the aqueous solution/suspension can comprise water, glycols, oils, emollients, stabilizers, wetting agents, preservatives, aromatics, flavors, and the like as suitable carriers and additives. Compositions can be formulated in any matter suitable for administration to a subject to facilitate administration and improve efficacy, including, but not limited to, oral (enteral) administration and parenteral injections. The parenteral injections include intravenous injection or infusion, subcutaneous injection, intradermal injection, and intramuscular injection. Compositions can also be formulated for other routes of administration including transmucosal, ocular, rectal, long acting implantation, sublingual administration, under the tongue, from oral mucosa bypassing the portal circulation, inhalation, or intranasal. In yet another aspect, provided is a method of preparing a pharmaceutical composition comprising combining a compound of formula (I), or a tautomer, stereoisomer, pharmaceutically acceptable salt or solvate thereof, with at least one pharmaceutically acceptable carrier. Pharmaceutical compositions can be prepared by any method known in the art in view of the present disclosure, and one of ordinary skill in the art will be familiar with such techniques used to prepare pharmaceutical compositions. For example, a pharmaceutical composition according to the application can be prepared by mixing a compound of formula (I) with one or more pharmaceutically acceptable carriers according to conventional pharmaceutical compounding techniques, including but not limited to, conventional admixing, dissolving, granulating, emulsifying, encapsulating, entrapping or lyophilizing processes. 92

Methods of Use In another general aspect, provided are methods of inhibiting a salt inducible kinase (SIK) and methods of treating a disease related to SIKs, including autoimmune disorders and proliferative disorders, using the compounds and compositions, e.g., pharmaceutical compositions, described herein. As used herein, “an effective amount” means an amount of a composition or compound that elicits a biological or medicinal response in a tissue system or subject that is being sought by a researcher, veterinarian, medical doctor or other conditions, which can include alleviation of the symptoms of the disease, disorder, or condition being treated. An effective amount can vary depending upon a variety of factors, such as the physical condition of the subject, age, weight, health, etc.; and the particular disease, disorder, or condition to be treated. An effective amount can readily be determined by one of ordinary skill in the art in view of the present disclosure. According to particular embodiments, an effective amount refers to the amount of a composition or compound described herein which is sufficient to inhibit a salt inducible kinase (SIK). In another particular embodiment, an effective amount refers to the amount of a composition or compound described herein which is sufficient to treat a disease, disorder, or condition mediated by a SIK. In an embodiment, provided is a method of inhibiting a salt inducible kinase (SIK) in a subject in need thereof, comprising administering to the subject a compound or composition described herein, e.g., administering an effective amount of a compound or composition described herein. In some embodiments, the salt inducible kinase is SIK1. In some embodiments, the salt inducible kinase is SIK2. In some embodiments, the salt inducible kinase is SIK3. In some embodiments, the salt inducible kinase is SIK1 and SIK2. In some embodiments, the salt inducible kinase is SIK1 and SIK3. In some embodiments, the salt inducible kinase is SIK2 and SIK3. In some embodiments, the salt inducible kinase is SIK1, SIK2, and SIK3. In an embodiment, provided is a method of treating a disease, disorder, or condition mediated by a SIK in a subject in need thereof, comprising administering to the subject a 93

compound or composition described herein, e.g., administering an effective amount of a compound or composition described herein. In some embodiments, a disease, disorder, or condition is mediated by SIK1. In some embodiments, a disease, disorder, or condition is mediated by SIK2. In some embodiments, a disease, disorder, or condition is mediated by SIK3. In some embodiments, a disease, disorder, or condition is mediated by SIK1 and SIK2. In some embodiments, a disease, disorder, or condition is mediated by SIK1 and SIK3. In some embodiments, a disease, disorder, or condition is mediated by SIK2 and SIK3. In some embodiments, a disease, disorder, or condition is mediated by SIK1, SIK2, and SIK3. In some embodiments, a disease, disorder, or condition mediated by a SIK is an autoimmune disorder. In some embodiments, a disease, disorder, or condition mediated by a SIK is a proliferative disorder. In other general aspects, provided are compounds and compositions described herein for use in methods of inhibiting a salt inducible kinase (SIK) and/or methods of treating a disease, disorder, or condition mediated by a SIK. In yet other general aspects, provided are uses of the compounds and compositions described herein in the manufacture of a medicament for inhibiting a salt inducible kinase (SIK) and/or for treating a disease, disorder, or condition mediated by a SIK. EXAMPLES The following examples of the application are to further illustrate the nature of the application. It should be understood that the following examples do not limit the application and the scope of the application is to be determined by the appended claims. Synthesis Examples Intermediate 1: 5-bromopyrazolo[1,5-a]pyridin-2-amine. 4

Step A: 2-(4-bromopyridin-2-yl)acetonitrile. To a solution of n-BuLi (1.9 moles) in THF (800 mL, 8 mL/g) cooled to -78 °C was charged acetonitrile (2.1 moles) while maintaining an internal temperature of -78 C ± 5 °C. The resulting mixture was stirred at -78 °C for 45 minutes and then was charged with a solution of 4-bromo-2-fluoropyridine (100 g, 0.57 moles) in THF (200 mL, 2 mL/g) while maintaining an internal temperature of -78 ± 5 °C. The reaction mixture was warmed to -30 °C and stirred for 2 hours. Once HPLC analysis indicated complete consumption of all the starting material, the reaction was quenched by the slow addition of saturated aqueous ammonium chloride (100 mL, 1 mL/g) and then warmed to 23 °C. The mixture was concentrated and then diluted with water (1000 mL, 10 mL/g) followed by ethyl acetate (EtOAc) (1000 mL, 10 mL/g). The layers were separated and the organic phase was washed with brine (1000 mL, 10 mL/g) and dried with Na2SO4. The organic phase was filtered and concentrated in vacuo to give a black oil which was then purified by silica gel chromatography (ether:EtOAc = 15:1 to 5:1) to give the title compound as a yellow solid (87 g, 0.44 moles, 77%). Step B: 1-amino-4-bromo-2-(cyanomethyl)pyridin-1-ium 2,4,6- trimethylbenzenesulfonate. To a solution of O-(mesitylsulfonyl)hydroxylamine (1.8 kg, 8.2 moles) in DCM (9.0 L, 10 L/kg) which had been cooled to 5 ± 5 °C was charged 2-(4- bromopyridin-2-yl)acetonitrile (0.90 kg, 4.6 molesxample 727) while maintaining an internal temperature of 5 ± 5 °C. The reaction mixture was slowly warmed to 23 °C and stirred for 19 hours. The resulting slurry was then filtered and washed with DCM (1.8 L, 2 L/kg) and dried to give the title compound as an off-white solid (2.15 kg) which was stored in the freezer and used without further purification in the following step. Step C: 5-bromopyrazolo[1,5-a]pyridin-2-amine. To a solution of 1-amino-4-bromo-2- (cyanomethyl)pyridin-1-ium 2,4,6-trimethylbenzenesulfonate (263 g, 0.638 moles) in MeOH (2630 mL, 10 mL/g) heated at 45 °C was charged K2CO3 (341 g, 1.28 moles) and stirred for 3 hours at 45 °C. The mixture was then concentrated and the solids slurried in water at 23 °C overnight, filtered and dried to give the title compound (89 g, 0.447 moles, 70%) as a brown solid. MS (ESI): mass calculated (calcd.) for C7H6BrN3, 211.0; m/z found, 212.0 [M+H] ⁺ . Intermediate 2: N-(5-bromopyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamid e. 95 mopyrazolo[1,5-a]pyridin-2-amine (Intermediate 1, 407 g, 1.45 mol) and DMA (8150 mL) was cooled at 10 ˚C. Cyclopropanecarbonyl chloride (159 g, 1.53 mol) was added dropwise. The reaction mixture warmed to 20 ˚C and stirred for 1 h. Water (8L) was added and the mixture was stirred overnight at room temperature. The resulting solid was isolated by filtration and dried under vacuum to provide the title compound (510 g, 95%) as a tan solid. MS (ESI): mass calcd. for C11H10BrN3O, 279.00; m/z found, 280.0/282.0 [M+H] ⁺ . Intermediate 3: N-(5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazolo[1 ,5-a]pyridin-2- yl)cyclopropanecarboxamide. omopyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (Intermediate 2, 300 g, 1.08 mol) and potassium acetate (211 g, 2.15 mol) were added dioxane (3 L) and water (19.4 mL, 1.08 mmol). Nitrogen was bubbled through the mixture for 20 min, then bis(pinacolato)diboron (302 g, 1.19 mol) was added at room temperature. The reaction mixture was purged with N ₂ , heated at 70 ˚C, charged with Pd(dppf)Cl ₂ (39.5 g, 0.054 mol) and stirred for 2 h under N ₂ . The reaction mixture was cooled to rt, filtered, and the resulting solid was rinsed with EtOAc. The resulting solid was purified by column chromatography on silica gel using petroleum ether/ethyl acetate (50:1 to 10:1,gradient elution) to provide the title compound (230 g, 66%). MS (ESI): mass calcd. for C ₁₇ H ₁₇ BN ₃ O ₃ , 327.18; m/z found, 328.2 [M+H] ⁺ and peak for corresponding boronic acid C11H12BN3O3246.1 [M+H] ⁺ . Intermediate 4: N-(5-(2-Cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide. 96

-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide. To a round bottom flask containing N-(5-(4,4,5,5-tetramethyl- 1,3,2-dioxaborolan-2-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopro panecarboxamide (Intermediate 3, 15.0 g, 45.4 mmol.1.00 equiv), 2-chloro-5-fluoro-4-iodopyridine (11.7 g, 45.4 mmol, 1.00 equiv), PdCl ₂ (dppf) (0.90 g, 1.23 mmol, 2.7 mol%), K ₃ PO ₄ (0.5 M in water, 123 mL, 61.5 mmol, 1.35 equiv) and 1,4-dioxane (150 mL, 0.3 M) was evacuated and backfilled with nitrogen (3x). The flask was then placed in a pre-heated heating block at 60 °C. After 30 minutes, water (600 mL) was added dropwise at 60 °C. The resulting slurry was stirred for 1 hour and then slowly cooled to 23 °C. The mixture was then filtered and the solids washed with water (3 x 40 mL) and then dried in vacuo overnight to give the title compound (15.3 g, 100% yield, 45.4 mmol) as an orange solid. MS (ESI): mass calcd. for C16H12N4OClF, 330.7; m/z found, 331.1 [M+H] ⁺ . Step B: N-(5-(2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide. To a 20 mL vial was charged N-(5-(2-chloro-5-fluoropyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (1016 mg, 3.072 mmol and zinc cyanide (331 mg, 2.76 mmol). The vial was capped with a septum and the contents were evacuated and backfilled with argon (2x). A solution of DMF (6 mL) and DMA (2 mL) was purged with argon and then added to the reaction vial. The vial was the heated at 100 °C for 20 min prior to the addition of Pd(PPh3)4 (322 mg, 0.279 mmol). The reaction mixture was heated at 90 °C for 95 min. The mixture was cooled to room temperature and added into water (150 mL) with constant stirring resulting in the formation of a precipitate. The solids were collected by suction filtration and washed with water (50 mL). The solids were dried open to air then further dried at 80 °C under high vacuum for 5 h to afford the title compound (1350 mg, 100%) as a tan solid. MS (ESI): mass calcd. for C17H12FN5O, 321.3; m/z found, 322.1 [M+H] ⁺ . Intermediate 5: N-(5-(5-Chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide. 97

tomed flask was charged 4-bromo-5-chloropyridine-2- carbonitrile (15.1 g, 69.3 mmol), N-[5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2- yl)pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide (Intermediate 3, 25.0 g, 75.8 mmol), and dichloro(diphenylphosphinoferrocene)palladium (II) (1.60 g, 2.18 mmol). The flask was equipped with a septum then evacuated and backfilled with nitrogen (2x). 1,4-dioxane (231 mL) and 0.5 M potassium phosphate (aq) (183 mL) were added. The resulting mixture was heated at 90 °C for 30 min. The mixture was cooled to room temperature and added into water (1400 mL) with constant stirring resulting in the formation of a precipitate. The solids were collected by suction filtration and washed with water (250 mL). The solids were dried open to air then further dried at 70 °C under high vacuum for 5 h to afford the title compound (26.0 mg, 100%) as an off-white solid. MS (ESI): mass calcd. for C17H12ClN5O, 337.1; m/z found, 338.1/340.1 [M+H] ⁺ . Intermediate 6: N-(5-(5-Fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2 - yl)cyclopropanecarboxamide. ,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazolo[1,5-a]pyridi n-2- yl)cyclopropanecarboxamide (Intermediate 3, 20.9 g, 64.0 mmol), 4-bromo-5-fluoro-2- methypyridine (9.82 g, 51.7 mmol), and 1,1’-bis(diphenylphosphino)ferroene-2- palladium(II)dichloride dichloromethane complex (2.08 g, 2.55 mmol) were added dioxane (200 mL) and 2 M aqueous potassium carbonate (100 mL). The reaction vessel was evacuated with sonication for 2 minutes, purged with N ₂ , the placed on a pre-heated block at 60 ˚C for 1 h. The reaction mixture was cooled to room temperature, treated with water (500 mL) and extracted with EtOAc (2 x 500 mL). The combined organic layers were dried (MgSO4), filtered and concentrated under reduced pressure. The residue was purified by flash column chromatography (SiO ₂ , 60-100% EtOAc/DCM) and the fractions containing product were combined and 98

concentrated to afford the title compound (13.7 g, 85%) as a tan solid. MS (ESI): mass calcd. for C17H15FN4O, 310.1; m/z found, 311.1 [M+H] ⁺ . Intermediate 7: N-(5-(5-Hydroxy-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin- 2- yl)cyclopropanecarboxamide. hyl-1,3,2-dioxaborolan-2-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide (Intermediate 3, 3.50 g, 10.7 mmol), 4-iodo-6-methylpyridin-3-ol hydrochloride (2.56 g, 9.41 mmol), Pd(dppf)Cl ₂ (391 mg, 0.535 mmol), and potassium phosphate (9.08 g, 42.8 mmol) was treated with 1,4-dioxane/H2O (100 mL, 4:1). The reaction vessel was purged with N2 and placed on a pre-heated block at 90 °C for 2 h. The organic layer was separated, concentrated under reduced pressure and the residue was purified by FCC (eluent: petroleum ether: ethyl acetate = 1:0 to 0:1, gradient elution) to afford the title compound (3.06 g, 93%) as a yellow solid. MS (ESI): mass calcd. for C17H16N4O2, 308.1; m/z found, 309.0 [M+H] ⁺ . Intermediate 8: 5-(5-Fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-am ine. olo[1,5-a]pyridin-2-amine (Intermediate 1, 20.0 g, 94.2 mmol), 5- fluoro-2-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2- yl)pyridine (32.5 g, 137 mmol), and RuPhos Pd G2 (3.67 g, 4.73 mmol) was added dioxane (200 mL) and 0.5 M tribasic potassium phosphate (300 mL). The reaction mixture was degassed under vacuum with sonication for 2 minutes, purged with N ₂ then stirred at 90 ˚C for 1.5 h. The reaction mixture was cooled to room temperature, treated with saturated aqueous sodium chloride (500 mL) and 10:1 DCM:MeOH (500 mL) then extracted. The organic layer was separated and the aqueous layer was extracted again 10:1 DCM:MeOH (2 x 500 mL). The combined organic layers were dried (MgSO4) and concentrated. The residue was purified by flash column chromatography (70-100% 99

ethyl acetate/hexanes) and the fractions containing product were combined and concentrated to afford the title compound (10.9 g, 48%) as a yellow solid. MS (ESI): mass calcd. for C13H11FN4, 242.1; m/z found, 243.1 [M+H] ⁺ . Intermediate 9: tert-butyl (1R,5S,7s)-7-((4-(2-Aminopyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonane-9-ca rboxylate. ttom flask containing tert-butyl (1R,5S,7s)-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate (4.52 g, 18.6 mmol) and N-methyl-2-pyrrolidone (50.0 mL, 0.25 M) was added sodium hydride (60 wt% dispersion in mineral oil, 4.95 g, 123 mmol) in three portions at 23 ˚C. After 10 minutes, 5-(5-fluoro-2-methylpyridin-4-yl)pyrazolo[1,5- a]pyridin-2-amine (Intermediate 8, 3.00 g, 12.4 mmol) was added in one portion. The resulting mixture was placed in a pre-heated block at 100 °C for 15 minutes and then cooled to 0 °C. The reaction mixture was quenched by the slow addition of a solution of ammonium chloride (12.3 g, 247 mmol) in water (50 mL) and then was added 10% MeOH in DCM (100 mL). The layers were separated and the aqueous layer was extracted with 10% MeOH in DCM (2 x 100 mL). The combined organic layers were washed with 13 wt% aqueous NaCl (2 x 50 mL) and then dried with MgSO4 and concentrated in vacuo. The residue was purified by flash column chromatography (1-10% MeOH in DCM) and the fractions containing product were combined and concentrated to afford the title compound (1.30 g, 22%) as an oil. MS (ESI): mass calcd. for C25H31N5O4, 465.5; m/z found, 466.3 [M+H] ⁺ . Intermediate 10: tert-butyl (1R,5S,7r)-7-((6-Chloro-4-(2- (cyclopropanecarboxamido)pyrazolo[1,5-a]pyridin-5-yl)pyridin -3-yl)oxy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate. 100

-butyl (1R,5S,7s)-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane-9- carboxylate (1.00 g, 4.11 mmol), 6-chloro-4-iodopyridn-3-ol (1.05 g, 4.11 mmol), di-tert-butyl- azodicarboxylate (1.23 g, 5.34 mmol) in THF (30 mL, 0.10 M) was added triphenylphosphine (1.40 g, 5.34 mmol) in one portion at 23 °C. After 30 minutes, di-tert-butyl-azodicarboxylate (0.60 g, 2.60 mmol) was added followed by triphenylphosphine (0.70 g, 2.60 mmol) at 23 °C. After 30 minutes, the reaction mixture was concentrated in vacuo and the residue was purified by flash column chromatography (0-30% EtOAc in hexanes) and the fractions containing product were combined and concentrated to afford tert-butyl (1R,5S,7r)-7-((6-chloro-4-iodopyridin-3- yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonane-9-carboxylate (1.50 g, 49%) as a white solid. MS (ESI): mass calcd. for C17H22N2O4Cl, 480.7; m/z found, 425.0 [[M-tBu]+H] ⁺ . Step B: A mixture of N-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazolo[1 ,5- a]pyridin-2-yl)cyclopropanecarboxamide (Intermediate 3, 1.20 g, 3.63 mmol), tert-butyl (1R,5S,7r)-7-((6-chloro-4-iodopyridin-3-yl)oxy)-3-oxa-9-azab icyclo[3.3.1]nonane-9-carboxylate (2.64 g, 3.63 mmol), PdCl2(dppf) (0.072 g, 0.099 mmol, 2.7 mol%), K3PO4 (0.5 M in water, 9.9 mL, 4.92 mmol) and 1,4-dioxane (12.1 mL, 0.3 M) was evacuated and backfilled with nitrogen (3x). The flask was then placed in a pre-heated heating block at 60 °C. After 1 hour, the solution was cooled to 23 °C and was added EtOAc (30 mL) followed by water (30 mL). The layers were separated and the aqueous layer was extracted with EtOAc (2 x 20 mL) and the combined organics were dried with MgSO ₄ , filtered and concentrated in vacuo. The residue was purified by flash column chromatography (10-100% EtOAc in hexanes) to afford the title compound (1.33 g, 66%) as a beige foam. MS (ESI): mass calcd. for C28H32N5O5Cl, 554.0; m/z found, 576.3 [M+Na] ⁺ . Intermediate 11: N-(5-(5-Fluoro-2-(prop-1-yn-1-yl)pyridin-4-yl)pyrazolo[1,5-a ]pyridin-2- yl)cyclopropanecarboxamide. 101

of N-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazolo[1 ,5- a]pyridin-2-yl)cyclopropanecarboxamide (Intermediate 3, 2.00 g, 6.05 mmol), 2-chloro-5-fluoro- 4-iodopyridine (1.56 g, 6.05 mmol), PdCl2(dppf) (0.12 g, 0.164 mmol, 2.7 mol%), K3PO4 (0.5 M in water, 16.4 mL, 8.20 mmol) and 1,4-dioxane (20.0 mL, 0.3 M) was evacuated and backfilled with nitrogen (3x). The flask was then placed in a pre-heated heating block at 60 ˚C. After 30 minutes, water (100 mL) was added dropwise at 60 ˚C. The resulting slurry was stirred for 1 hour and then slowly cooled to 23 ˚C. The mixture was then filtered and the solids washed with water (3 x 6.0 mL) and then dried in vacuo overnight to give N-(5-(2-chloro-5-fluoropyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (2.01 g, 100%) as an orange solid. MS (ESI): mass calcd. for C ₁₆ H ₁₂ N ₄ OClF, 330.7; m/z found, 331.1 [M+H] ⁺ . Step B: To a round bottom flask containing N-(5-(2-chloro-5-fluoropyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (0.50 g, 1.51 mmol), 1,1'- Bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (0.061 g, 0.076 mmol, 5 mol%) and 1,4-dioxane (5.0 mL, 0.3 M) was sparged with Argon for 10 minutes and then was added tributyl(1-propynl)tin (1.00 g, 3.02 mmol) via syringe under nitrogen. The reaction vessel was placed in a pre-heated heating block at 70 ˚C. After 40 hrs, the mixture was cooled to 23 ˚C and concentrated in vacuo. The residue was purified by flash column chromatography (0-60% EtOAc in hexanes) and the fractions containing product were combined and concentrated to afford the title compound (0.40 g, 78%) as a pale yellow solid. MS (ESI): mass calcd. for C ₁₉ H ₁₅ N ₄ OF, 334.4; m/z found, 335.1 [M+H] ⁺ . Intermediate 12: (1r,4r)-4-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylp yridin-3- yl)oxy)cyclohexan-1-ol. 102

ing trans-cyclohexane-1,4-diol (1.61 g, 13.9 mmol) and dimethylacetamide (16.5 mL, 0.25 M) was added sodium hydride (60 wt% dispersion in mineral oil, 0.83 g, 20.6 mmol) in three portions at 23 °C. After 10 minutes, 5-(5-fluoro-2-methylpyridin- 4-yl)pyrazolo[1,5-a]pyridin-2-amine (Intermediate 8, 1.00 g, 4.13 mmol) was added in one portion and then the reaction was placed in a pre-heated heating block at 80 ˚C. After 5 hours, the reaction mixture was cooled to 23 °C and then diluted with DCM (30 mL) and then slowly quenched with saturated aq. NH ₄ Cl (20 mL) and then further diluted with water (20 mL). The layers were separated and the organic layer was washed with sat. aq. NaCl (2 x 20 mL), dried with MgSO4, filtered and concentrated in vacuo. The residue was purified by flash column chromatography (1-5% MeOH in DCM) and the fractions containing product were combined and concentrated to afford the title compound (0.53 g, 35%) as an oil. MS (ESI): mass calcd. for C19H22N4O2, 338.4; m/z found, 339.1 [M+H] ⁺ . Intermediate 13: tert-butyl (S)-2-(((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyri din-3- yl)oxy)methyl)morpholine-4-carboxylate. nd (530 mg, 42%) was prepared as described in Intermediate 9 where (S)-N-Boc-2-hydroxymethylmorpholine was used instead of (1R,5S,7s)-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane-9-carbo xylate. ¹ H NMR (400 MHz, 103

DMSO-d6) δ 8.32 - 8.28 (m, 2H), 7.58 (d, J = 0.8 Hz, 1H), 7.32 (s, 1H), 6.80 (dd, J = 1.6, 7.2 Hz, 1H), 5.70 (s, 1H), 5.34 (s, 2H), 4.16 (d, J = 4.8 Hz, 2H), 3.92 - 3.81 (m, 2H), 3.77 - 3.63 (m, 3H), 3.45 - 3.42 (m, 2H), 2.45 (s, 3H), 1.36 (s, 9H). MS (ESI): mass calcd. for C ₂₃ H ₂₉ N ₅ O ₄ , 439.2; m/z found, 440.2 [M+H] ⁺ Intermediate 14: 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazolo[1,5- a]pyridin-2-amine. om flask was charged Intermediate 1 (5.10 g, 24.0 mmol), bis(pinacolato)diboron (12.5 g, 48.1 mmol, 2 equiv), potassium acetate (7.08 g, 72.2 mmol, 3 equiv), 1,1'-bis(diphenylphosphino)ferrocene-palladium(ii)dichloride dichloromethane complex (1.98 g, 2.41 mmol, 0.1 equiv), and 1,4-dioxane (96 mL). The flask was capped with septum then evacuated and backfilled with N2 several times. The flask was heated to 80 ˚C for 18 h. The rxn mixture was simply concentrated to dryness and purified directly by column chromatography on silica gel using hexanes/ethyl acetate (1:0 to 0:1; gradient elution) to provide the title compound (4.83 g, 77%). ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 8.24 – 8.16 (m, 1H), 7.60 (t, J = 1.2 Hz, 1H), 6.63 (dd, J = 6.8, 1.4 Hz, 1H), 5.73 – 5.67 (m, 1H), 5.31 (s, 2H), 1.30 (s, 12H). MS (ESI): mass calcd. for C13H18BN3O2, 259.1; m/z found, 178.1 [M+H] ⁺ peak for corresponding boronic acid C ₇ H ₈ BN ₃ O ₂ 177.0 [M+H] ⁺ . Intermediate 15: N-(2,6-dimethylpyrimidin-4-yl)-5-(5-fluoro-2-methylpyridin-4 -yl)pyrazolo[1,5- a]pyridin-2-amine g ediate 8 (7.97 g, 29.0 mmol), 4-chloro-2,6-dimethylpyrimidine (4.1 g, 29 mmol), Brettphos-Pd-G3 (2.6 g, 2.9 mmol), Brettphos (3.1 g, 5.8 mmol), Cs2CO3 (28 104

g, 87 mmol) and 1,4-dioxane (150 mL ) was purged with N2 for 2 min. The resultant mixture was stirred at 50 °C for 6 h before cooling to room-temperature. The reaction mixture was concentrated to dryness under reduced pressure to give the crude product, which was purified by FCC (eluent: petroleum ether: ethyl acetate) = 100/0 to 0/100) to yield the title compound (8 g, 79%) as a yellow solid. ¹ H NMR (400 MHz, DMSO-d6) δ 10.29 (s, 1H), 8.67 (d, J = 7.2 Hz, 1H), 8.53 (d, J = 2.6 Hz, 1H), 7.93 (s, 1H), 7.61 (d, J = 6.4 Hz, 1H), 7.07 - 7.02 (m, 1H), 7.00 (s, 1H), 6.96 (s, 1H), 2.53 (s, 3H), 2.47 (s, 3H), 2.30 (s, 3H). MS (ESI): mass calcd. for C ₁₉ H ₁₇ FN ₆ , 348.4; m/z found, 349.2 [M+H] ⁺ Intermediate 16: 4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyrid in-5-yl)-6- methylpyridin-3-ol ) was prepared as described in Intermediate 15 where 4-(2- aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-ol was used instead of Intermediate 8. ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.18 (s, 1H), 8.55 (d, J = 7.2 Hz, 1H), 8.14 (s, 1H), 7.96 (s, 1H), 7.28 (s, 1H), 7.16 - 7.11 (m, 1H), 7.02 (d, J = 8.1 Hz, 1H), 6.85 (br. s., 1H), 2.46 (s, 3H), 2.40 (s, 3H), 2.30 (s, 3H). MS (ESI): mass calcd. for C ₁₉ H ₁₈ N ₆ O, 346.4; m/z found, 347.1 [M+H] ⁺ Intermediate 17: 6-((5-(5-fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin- 2-yl)amino)-2,4- dimethylpyridazin-3(2H)-one aining a stir bar was charged with Intermediate 8 (1.00 g, 4.12 mmol), 6-chloro-2,4-dimethylpyridazin-3(2H)-one (720 mg, 4.54 mmol), tBuBrettPhos Pd G3 105

(176 mg, 0.21 mmol), cesium carbonate (2.69 g, 8.26 mmol), and 1,4-dioxane (15 mL). The reaction mixture was degassed under vacuum with sonication for 2 minutes, then vented to argon. The vial was placed into a pre-heated plate at 80 ºC for 16 h. The reaction mixture was then filtered, concentrated to dryness under reduced pressure to afford the crude product which was purified by flash column chromatography (eluent: 0-10% 2M NH3 in CH3OH/DCM)) to afford the title compound (1.20 g, 80%) as a white solid. MS (ESI): mass calcd. for C ₁₉ H ₁₇ FN ₆ O, 364.1; m/z found, 365.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Chloroform-d) δ 8.42 – 8.35 (m, 2H), 7.75 (t, J = 2.1 Hz, 1H), 7.53 – 7.48 (m, 0H), 7.43 (d, J = 4.6 Hz, 1H), 7.20 (dt, J = 3.0, 1.5 Hz, 1H), 7.00 – 6.91 (m, 2H), 3.82 – 3.78 (m, 3H), 3.36 (h, J = 1.8 Hz, 1H), 2.62 (d, J = 2.9 Hz, 3H), 2.26 – 2.22 (m, 3H). Intermediate 18: (R)-4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-5-((1-methylpyrro lidin-3- yl)methoxy)picolinonitrile Step A: 5-(2-chloro-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-am ine. To a round bottom flask containing 5-bromopyrazolo[1,5-a]pyridin-2-amine (Intermediate 1, 4.29 g, 20.2 mmol), (2-chloro-5-fluoropyridin-4-yl)boronic acid (3.9 g, 22.2 mmol), PdCl2(dppf) (0.659 g, 1.01 mmol), 1,4-dioxane (80 mL), water (20 mL) and CsF (9.21 g, 60.7 mmol) was evacuated and backfilled with nitrogen (3x). The flask was then placed in a pre-heated heating block at 60 °C. After 3 the mixture was extracted (2 X EtOAc), the combined organic layers were dried (MgSO4) and concentrated. The residue was purified (FCC, SiO2) to provide the title compound (3.2 g, 60%) as a yellow solid. MS (ESI): mass calcd. for C ₁₂ H ₈ ClFN ₄ , 262.04; m/z found, 262.9 [M+H] ⁺ . Step B: 4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-5-fluoropicolinonitri le. To a mixture consisting of 5-(2-chloro-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-am ine (2600 mg, 9.90 106

mmol) and zinc cyanide (1744 mg, 14.85 mmol). DMF (50 mL) was added followed by Pd(PPh3)4 (915 mg, 0.792 mmol). The reaction mixture was heated at 120 °C for 3 h. The mixture was cooled to room temperature and concentrated to give the title compound as a crude product (6 g, assumed 100% yield, 42% purity). MS (ESI): mass calcd. for C ₁₃ H ₈ FN ₅ , 253.08; m/z found, 253.9 [M+H] ⁺ . Step C: (R)-4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-5-((1-methylpyrro lidin-3- yl)methoxy)picolinonitrile. A mixture of 4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-5- fluoropicolinonitrile (6 g crude), (R)-(1-methylpyrrolidin-3-yl)methanol (1.71 g, 14.8 mmol), Cs2CO3 (8.06 g, 24.7 mmol), and DMF (60 mL) was stirred at 60 °C overnight. The mixture was concentrated to give a crude product, which was purified by FCC (dichloromethane: methanol from 1:0 to 10:1) to afford the title compound (3.6 g, crude) as a yellow solid. MS (ESI): mass calcd. for C19H20N6O, 348.17; m/z found, 348.9 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 8.62 (s, 1H), 8.34 (d, J = 7.2 Hz, 1H), 8.12 (s, 1H), 7.62 (s, 1H), 6.81 (dd, J = 1.2, 7.2 Hz, 1H), 5.73 (s, 1H), 5.39 (s, 2H), 2.63 - 2.53 (m, 2H), 2.47 - 2.37 (m, 2H), 2.35 - 2.28 (m, 1H), 2.22 (s, 3H), 1.98 - 1.83 (m, 1H), 1.62 - 1.45 (m, 1H). Intermediate 19: 5-(5-fluoro-2-(prop-1-yn-1-yl)pyridin-4-yl)-N-(1-methyl-1H-p yrazol-3- yl)pyrazolo[1,5-a]pyridin-2-amine. , 55%) was prepared as described in Example 300, Steps B- D, and using 2-chloro-5-fluoro-4-iodopyridine instead of (2R,3S)-2-(((6-chloro-4-iodopyridin-3- yl)oxy)methyl)tetrahydrofuran-3-ol in Step B, and using 3-bromo-1-methyl-1h-pyrazole instead of 4-bromo-1-methyl-1h-pyrazole in Step D. MS (ESI): mass calcd. for C ₁₉ H ₁₅ FN ₆ , 346.4; m/z found, 347.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.13 (s, 1H), 8.61 (d, J = 2.6 Hz, 1H), 8.52 (dd, J = 7.1, 1.0 Hz, 1H), 7.85 - 7.79 (m, 1H), 7.77 (d, J = 6.4 Hz, 1H), 7.49 (d, J = 2.2 Hz, 1H), 6.92 (dt, J = 7.1, 1.9 Hz, 1H), 6.50 (d, J = 0.8 Hz, 1H), 6.05 (d, J = 2.2 Hz, 1H), 3.73 (s, 3H), 2.09 (s, 3H). 107

Intermediate 20: 1-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3 -yl)oxy)-2- methylpropan-2-ol. mo-6-methylpyridin-3-yl)oxy)-2-methylpropan-2-ol. To a mixture of 4- bromo-6-methylpyridin-3-ol (1.18 g, 6.28 mmol) and cesium carbonate (6.13 g, 18.8 mmol) in DMF (12.5 mL, 0.5 M) was added isobutylene oxide (1.23 mL, 13.8 mmol). The reaction was stirred at 60 °C for 46 hr, then worked-up in ethyl acetate, water, and brine. The organics were separated, dried with sodium sulfate, then purified via FCC (20-100% ethyl acetate in hexanes) to yield the title compound (702 mg, 43%) as a yellow solid. Step B: tert-butyl (5-(5-(2-hydroxy-2-methylpropoxy)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)carbamate. To a capped vial with a mixture of 1-((4-bromo-6- methylpyridin-3-yl)oxy)-2-methylpropan-2-ol (700 mg, 2.69 mmol), tert-butyl N-[5-(4,4,5,5- tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazolo[1,5-a]pyridin-2 -yl]carbamate (1.21 g, 3.36 mmol), and 1,1'-bis(diphenylphosphino)ferrocene-palladium(ii)dichloride dichloromethane complex (222 mg, 0.27 mmol) was added 1,4-dioxane (10.7 mL) and 0.5 M K3PO4 (5.38 mL) under vacuum. The vial was subjected to a nitrogen line, then heated at 70 °C for 20 hr. The reaction mixture was worked-up in ethyl acetate, water, and brine. The organics were separated, dried with sodium sulfate, then purified via FCC (20-100% ethyl acetate in hexanes) to yield the title compound (950 mg, 86%) as a pink solid. Step C: 1-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3 -yl)oxy)-2- methylpropan-2-ol. To a solution of tert-butyl (5-(5-(2-hydroxy-2-methylpropoxy)-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)carbamate (950 mg, 2.3 mmol) in DCE (9.2 mL) was added TFA (1.76 mL, 23 mmol). The mixture was allowed to stir for 6h, then worked-up in ethyl acetate, water, and brine. The organics were separated, dried with sodium sulfate, then purified via FCC (0-100% ethyl acetate in hexanes) to yield the title compound (530 mg, 74%) as a yellow solid. MS (ESI): mass calcd. for C ₁₇ H ₂₀ N ₄ O ₂ , 312.4; m/z found, 331.2 [M+H] ⁺ .1H NMR (400MHz, DMSO-d6) δ 8.30 (d, J=7.2 Hz, 1H), 8.28 (s, 1H), 7.59 (s, 1H), 7.31 (s, 1H), 108

6.84 - 6.78 (m, J=7.0 Hz, 1H), 5.68 (s, 1H), 5.34 (s, 2H), 4.64 (s, 1H), 3.85 (s, 2H), 2.45 (s, 3H), 1.15 (s, 6H) Intermediate 21: N-Cyclopropyl-4-((5-(5-fluoro-2-methylpyridin-4-yl)pyrazolo[ 1,5-a]pyridin-2- yl)amino)-2,6-dimethoxybenzamide. ontaining a stir bar was charged with Intermediate 8 (500 mg, 2.06 mmol), 4-bromo-N-cyclopropyl-2,6-dimethoxybenzamide (619 mg, 2.06 mmol), tBuBrettPhos Pd G3 (108 mg, 0.13 mmol), cesium carbonate (1.23 g, 3.78 mmol), and 1,4- dioxane (15 mL). The reaction mixture was degassed under vacuum with sonication for 2 minutes, then vented to argon. The vial was placed into a pre-heated plate at 80 ºC for 16 h. The reaction mixture was then filtered, concentrated to dryness under reduced pressure to afford the crude product which was purified by flash column chromatography (eluent: 0-10% 2M NH ₃ in CH3OH/DCM)) to afford the title compound (780 mg, 82%) as a white solid. MS (ESI): mass calcd. for C25H24FN5O3, 461.2; m/z found, 462.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Chloroform-d) δ 8.41 (t, J = 2.2 Hz, 1H), 8.32 (dd, J = 10.5, 6.9 Hz, 1H), 7.62 – 7.56 (m, 1H), 7.30 (d, J = 6.6 Hz, 1H), 6.85 – 6.79 (m, 1H), 6.66 (d, J = 1.5 Hz, 0H), 6.60 (d, J = 1.5 Hz, 2H), 6.24 – 6.15 (m, 1H), 4.12 (q, J = 7.1 Hz, 1H), 3.84 – 3.74 (m, 7H), 2.93 – 2.86 (m, 1H), 2.61 – 2.55 (m, 3H), 0.85 – 0.78 (m, 2H), 0.63 – 0.54 (m, 2H). Intermediate 22: N-(2,6-dimethylpyrimidin-4-yl)-5-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2- yl)pyrazolo[1,5-a]pyridin-2-amine 109

om flask purged and maintained with an inert atmosphere of nitrogen, was placed Intermediate 14 (65.00 g, 250.00 mmol, 1.00 equiv), 4-chloro-2,6- dimethylpyrimidine (67.70 g, 480.00 mmol, 1.90 equiv), t-BuBrettPhos Pd G ₃ (10.50 g,12.50 mmol, 0.05 equiv), Cs2CO3 (162.50 g, 500.00 mmol, 2.00 equiv), dioxane (975.00 mL). The resulting solution was stirred for 5 h at 90 ^o C. The reaction mixture was cooled to 25 ^o C with a water/ice bath. The solids were filtered out. The filtrate was then quenched by the addition of 2 L of water/ice. The resulting solution was extracted with 3x1 L of ethyl acetate and the organic layer was concentrated. The residue was applied onto a silica gel column with ethyl acetate/petroleum ether (1:10). This resulted in 50.3 g (54.9%) of the title compound as a white solid. MS (ESI): mass calcd. for C ₁₉ H ₂₄ BN ₅ O ₂ , 365.20; m/z found, 366.2 [M+H] ⁺ . ¹ H NMR (300 MHz, DMSO-d6, ppm) δ 10.21 (s, 1H), 8.50 (d, J = 6.9 Hz, 1H), 7.88 (s, 1H), 7.01 (s, 1H), 6.89- 6.86 (m, 2H), 2.46 (s, 3H), 2.30 (s, 3H), 1.32 (s, 12H). Intermediate 23: methyl 4-((5-(5-(((1r,4r)-4-hydroxycyclohexyl)oxy)-2-methylpyridin- 4- yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-2,6-dimethoxybenzoate p p p d by the similar method of Intermediate 15 using methyl 4- bromo-2,6-dimethoxybenzoate instead of 4-chloro-2,6-dimethylpyrimidine (499 mg, 63%). MS (ESI): mass calcd. for C ₂₉ H ₃₂ N ₄ O ₆ , 532.6; m/z found, 533.2 [M+H] ⁺ . 110

Intermediate 24: 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin- 4-yl)-N-(2,6-dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2 -amine. , , oxa-9-azabicyclo[3.3.1]nonan-7-ol (567 mg, 3.16 mmol) and DMA (1.33 mL) was added NaH (60% dispersion in mineral oil) (229 mg, 5.7 mmom). The mixture was stirred at r.t. for 10 min. Then, N-(2,6-dimethylpyrimidin-4-yl)-5-(5-fluoro-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-amine (Intermediate 15) was added. The reaction mixture was stirred at 80 °C for 60 min. The reaction was quenched with H2O and then extracted with DCM. The organics were collected, dried over anh. MgSO4, filtered, and concentrated under vacuo. The crude was purified via FCC using 10% MeOH/DCM to afford the title compound (560 mg, 82.7 mmol). MS (ESI): mass calcd. for C26H29N7O2, 471.6; m/z found, 472.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d ₄ ) δ 8.30 (d, J = 7.2 Hz, 1H), 8.06 (s, 1H), 7.96 (d, J = 1.8 Hz, 1H), 7.28 (s, 1H), 7.07 (dd, J = 7.2, 2.0 Hz, 1H), 6.92 (s, 1H), 6.71 (s, 1H), 4.58- 4.50 (m, 1H), 3.75 – 3.56 (m, 4H), 2.94 – 2.86 (m, 2H), 2.43-2.41 (two s, 6H), 2.34 – 2.24 (m, 5H), 1.92 – 1.82 (m, 2H). Intermediate 25: (2R,3S)-2-(((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methyl pyridin-3- yl)oxy)methyl)tetrahydrofuran-3-ol. 111

Step A: ((2R,3S)-3-hydroxytetrahydrofuran-2-yl)methyl 4-methylbenzenesulfonate. To a 1 L round bottom flask was added 1,2-dideoxy-d-ribofuranose (4.62 g, 39.1 mmol), dichloromethane (391 mL, 39.1 mmol), and 4-dimethylaminopyridine (7.17 g, 58.7 mmol). Under ice bath, p-toluenesulfonyl chloride (7.46 g, 39.1 mmol) was slowly added. The reaction mixture was slowly warmed up to room temperature and stirred for 2 days. The mixture was concentrated onto silica, then purified via FCC (0-100% ethyl acetate/hexanes). The second peak to elute was collected as the title compound (4.89 g, 46%). Step B: (2R,3S)-2-(((4-bromo-6-methylpyridin-3-yl)oxy)methyl)tetrahy drofuran-3-ol. To a round bottom flask was added 4-bromo-6-methylpyridin-3-ol (3.27 g, 17.4 mmol), ((2R,3S)-3-hydroxytetrahydrofuran-2-yl)methyl 4-methylbenzenesulfonate (3.95 g, 14.5 mmol), cesium carbonate (11.3 g, 34.8 mmol), and DMF (41.4 mL, 14.5 mmol). The reaction mixture was heated at 50 °C for 21 h, then at 60 °C for 2 hr. The reaction was worked-up in a separatory funnel using ethyl acetate/water/brine. The product was further extracted from the aqueous layer using 5% methanol in ethyl acetate. The combined organic extracts were dried with Na ₂ SO ₄ and purified via FCC (50-100% ethyl acetate in hexanes) to give the title compound (3.1 g, 74%). Step C: (2R,3S)-2-(((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methyl pyridin-3- yl)oxy)methyl)tetrahydrofuran-3-ol. To a round bottom flask was added (2R,3S)-2-(((4-bromo- 6-methylpyridin-3-yl)oxy)methyl)tetrahydrofuran-3-ol (2 g, 6.94 mmol), 5-(4,4,5,5-tetramethyl- 1,3,2-dioxaborolan-2-yl)pyrazolo[1,5-a]pyridin-2-amine (Intermediate 14, 2.34 g, 9.02 mmol), and 1,1'-bis(diphenylphosphino)ferrocene-palladium(ii)dichloride dichloromethane complex (573 mg, 0.69 mmol). Under vacuum, added 1,4-dioxane (28 mL, 6.94 mmol) and 0.5 M potassium phosphate (13.9 mL, 6.94 mmol). Evacuated and backfilled with nitrogen (3x), then heated mixture at 90 °C under nitrogen for 16 h. Worked-up mixture in separatory funnel using ethyl acetate/water/brine. Dried organic layer with Na ₂ SO ₄ , then purified via FCC (initially used 50-100% ethyl acetate in hexanes, but moved to 10% methanol in ethyl acetate when product was not eluting) to give 1.61 g (68%) of the title compound. MS (ESI): mass calcd. for C18H20N4O3, 340.2; m/z found, 341.1 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 8.32 – 8.27 (m, 2H), 7.56 – 7.51 (m, 1H), 7.30 (s, 1H), 6.76 (dd, J = 7.2, 2.0 Hz, 1H), 5.70 – 5.66 (m, 1H), 5.32 (s, 2H), 5.02 (d, J = 4.2 Hz, 1H), 4.19 – 4.06 (m, 3H), 3.88 – 3.74 (m, 3H), 2.44 (s, 3H), 1.98 – 1.88 (m, 1H), 1.73 – 1.64 (m, 1H). 112

Intermediate 26: 6-chloro-4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1, 5-a]pyridin-5- yl)pyridin-3-ol. ded 6-chloro-4-iodopyridin-3-ol (2.10 g, 8.21 mmol), N-(2,6- dimethylpyrimidin-4-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxabo rolan-2-yl)pyrazolo[1,5-a]pyridin- 2-amine (Intermediate 22, 3 g, 8.21 mmol), 1,1'-bis(diphenylphosphino)ferrocene- palladium(ii)dichloride dichloromethane complex (678 mg, 0.82 mmol), 1,4-dioxane (32.9 mL, 8.21 mmol), and 0.5 M potassium phosphate (16.4 mL, 8.21 mmol). The flask was evacuated and backfilled with N2 (3x), then stirred at 70 °C under N2 for 20 hr. Poured reaction mixture onto 1 L of stirring water and filtered off precipitate (tan color). Transferred precipitate to a separate round bottom flask, then added 200 mL 70% THF / 30% ether. Stirred mixture at 50 °C for 30 min. Filtered off solids (grey color), then rinsed with THF/ether. Placed in hi-vac under 70 °C for 30 min to yield 2.34 g (78%) of the title compound. MS (ESI): mass calcd. for C18H15ClN6O, 366.8; m/z found, 367.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) d 10.70 (s, 1H), 10.20 (s, 1H), 8.59 (dt, J = 7.3, 1.0 Hz, 1H), 8.10 (s, 1H), 7.95 (dd, J = 2.0, 0.9 Hz, 1H), 7.56 (s, 1H), 7.11 (dd, J = 7.2, 2.0 Hz, 1H), 7.00 (s, 1H), 6.91 (s, 1H), 2.47 (s, 3H), 2.31 (s, 3H). Intermediate 27: 3-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-(difluoromethox y)pyridin-3- yl)oxy)-2,2-dimethylpropanenitrile. - - omethoxy)-4-iodopyridin-3-yl)oxy)-2,2-dimethylpropanenitrile (Example 329 Steps A-C, 10.0 g, 20.4 mmol, 1.00 equiv), Intermediate 15 (9.23 g, 35.7 mmol, 113

1.75 equiv), Pd(dppf)Cl2 (1.68 g, 2.04 mmol, 10 mol%), aq. K3PO4 (0.5 M, 122 mL, 3.00 equiv) and 1,4-dioxane (82 mL, 0.25 M) was purged with N2 (evacuated and back-filled with N2 x 3). The resulting mixture was heated at 60 °C for 16 hours. The mixture was then cooled to 23 °C and diluted with water (100 mL) and extracted with 10% MeOH in DCM (3 x 100 mL). The combined organics were dried with MgSO4, filtered and concentrated in vacuo. The crude oil was purified by purified by silica gel chromatography (10-70% EtOAc in hexanes) to give the title compound (5.78 g, 15.5 mmol, 76% yield) as a tan solid. MS (ESI): mass calcd. for C18H17F2N5O2, 373.1; m/z found, 374.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 8.32 (d, J = 7.1 Hz, 1H), 8.10 (s, 1H), 7.81 – 7.48 (m, 2H), 7.21 (s, 1H), 6.80 (dd, J = 7.2, 2.0 Hz, 1H), 5.70 (d, J = 0.8 Hz, 1H), 5.37 (s, 2H), 4.18 (s, 2H), 1.35 (s, 6H). Intermediate 28: 3-((4-(2-amino-4,5-dihydropyrazolo[1,5-a]pyridin-5-yl)-6-(2, 2- difluoroethoxy)pyridin-3-yl)oxy)-2,2-dimethylpropanenitrile. oroethoxy)-4-iodopyridin-3-yl)oxy)-2,2-dimethylpropanenitril e. - To a flask was charged 3-((6-hydroxy-4-iodopyridin-3-yl)oxy)-2,2-dimethylpropanenit rile (Example 329 Steps A-B, 2.20 g, 6.92 mmol) Cs2CO3 (4.50 g, 13.8 mmol) and DMF (32 mL) resulting in a white mixture. Then, to the mixture was added 2,2-difluoroethyl 4- methylbenzenesulfonate (2.45 g, 10.4 mmol) as liquid. The reaction was stirred at 90 °C for 10 h. The mixture was cooled to room temperature and diluted with EtOAc and washed with water (3x). The combined organics were dried with MgSO4, filtered and concentrated in vacuo. The crude oil was purified by silica gel chromatography (10-100% EtOAc) to give the title compound (2.47 g, 6.46 mmol, 93% yield). Step B: 3-((4-(2-amino-4,5-dihydropyrazolo[1,5-a]pyridin-5-yl)-6-(2, 2- difluoroethoxy)pyridin-3-yl)oxy)-2,2-dimethylpropanenitrile. 3-((4-(2-aminopyrazolo[1,5- 114

a]pyridin-5-yl)-6-(difluoromethoxy)pyridin-3-yl)oxy)-2,2- dimethylpropanenitrile. To a solution of 3-((6-(2,2-difluoroethoxy)-4-iodopyridin-3-yl)oxy)-2,2-dimet hylpropanenitrile (2.3 g, 6.02 mmol), Intermediate 14(2.73 g, 10.5 mmol), Pd(dppf)Cl ₂ (0.48 g, 0.602 mmol, 10 mol%), aq. K ₃ PO ₄ (0.5 M, 20 mL, 18.1 mmol) and 1,4-dioxane (24 mL) was purged with N ₂ (evacuated and back-filled with N2 x 3). The resulting mixture was heated at 70 °C for 3 hours. The mixture was then cooled to 23 °C and diluted with water (100 mL) and extracted with EtOAc (3 x 100 mL). The combined organics were dried with MgSO4, filtered and concentrated in vacuo. The crude oil was purified by silica gel chromatography (30-100% EtOAc in hexanes) to give the title compound (1.50 g, 3.87 mmol, 64% yield) as a tan solid. MS (ESI): mass calcd. for C ₁₉ H ₁₉ F ₂ N ₅ O ₂ , 387.1; m/z found, 388.1 [M+H] ⁺ . ¹ H NMR (600 MHz, CDCl ₃ ) δ 8.24 (dd, J = 7.1, 1.1 Hz, 1H), 7.83 (s, 1H), 7.56 (dd, J = 2.2, 1.0 Hz, 1H), 6.91 (s, 1H), 6.85 – 6.76 (m, 1H), 6.16 (tt, J = 55.7, 4.2 Hz, 1H), 5.88 (s, 1H), 4.55 (td, J = 13.6, 4.2 Hz, 2H), 4.04 (s, 2H), 3.91 (d, J = 1.1 Hz, 2H), 1.41 (d, J = 1.2 Hz, 6H). Example 1: N-[5-[2-Cyano-5-[[(3R)-1-methylpyrrolidin-3-yl]methoxy]-4-py ridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. sk was charged with sodium hydride (NaH) (60% dispersion in mineral oil, 114 mg, 2.85 mmol) as a solid, followed by addition of 6 mL of DMF (12 mL, 0.1 M, 1.2 mmol). The round-bottom flask was placed into an ice-bath and cooled to about 0 °C. A solution of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide (Intermediate 5, 424 mg, 1.243 mmol) in 3 mL DMF was then added to the mixture dropwise. The mixture turned a yellow/brown color. The resulting mixture was stirred for 5 min then a solution fof (R)-(1-methylpyrrolidin-3-yl)methanol (213 mg, 1.85 mmol) in 3 mL DMF was added dropwise. The mixture was stirred for 5 min then allowed to warm to rt. The reaction mixture was stirred for additional 70 minutes, at which time it was 115

poured into 100 mL of 5% aq. LiCl. The mixture was extracted 3 x 100 mL EtOAc. The combined organic layers were concentrated in-vacuo in the presence of 5 g of diatomaceous earth. The product was purified via FCC using 0-70% 2M 10% NH ₃ /MeOH-DCM gradient to afford the title compound (353 mg, 66%). MS (ESI): mass calcd. for C ₂₃ H ₂₄ N ₆ O ₂ , 416.2; m/z found, 417.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.11 (s, 1H), 8.65 (s, 1H), 8.61 (d, J = 7.3 Hz, 1H), 8.18 (s, 1H), 7.93 (d, J = 1.9 Hz, 1H), 7.10 (dd, J = 7.3, 2.0 Hz, 1H), 6.91 (s, 1H), 4.21 (d, J = 6.6 Hz, 2H), 2.62 – 2.52 (m, 2H), 2.46 – 2.28 (m, 3H), 2.20 (s, 3H), 1.91 (dddd, J = 17.6, 13.1, 8.1, 5.6 Hz, 2H), 1.60 – 1.45 (m, 1H), 0.82 (tq, J = 8.2, 5.4, 4.2 Hz, 4H). Example 2: N-[5-[2-cyano-5-(2-dimethylaminoethylamino)-4-pyridyl]pyrazo lo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide. was charged with N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide (Intermediate 5, 146 mg, 0.428 mmol), N,N- dimethylethylenediamine (0.081 mL, 0.705 mmol), Cs ₂ CO ₃ (302 mg, 0.927 mmol), chloro(2- dicyclohexylphosphino-2',6'-diisopropoxy-1,1'biphenyl)[2-(2' -amino-1,1'- biphenyl)]palladium(II) (9.2 mg, 0.0118 mmol), and dicyclohexyl(2',6'-diisopropoxy-[1,1'- biphenyl]-2-yl)phosphine (5.4 mg, 0.0116 mmol) as solids. The vial was evacuated and backfilled 2x with argon. To the vial was added 1,4-dioxane (1 mL, 0.4 M, 0.4 mmol) and it was placed on a preheated 100 °C heating block for 70 min. Then, the reaction mixture was allowed to cool to room temperature. The reaction mixture was diluted with 50 mL of DCM and 1 g of diatomaceous earth was added, and then the solvent was evaporated under reduced. The product was purified via FCC using 0-10% 2M NH3-MeOH-DCM/DCM gradient to afford a white powder (129 mg, 69%). MS (ESI): mass calcd. for C21H23N7O, 389.2; m/z found, 390.2 [M+H] ⁺ . 1H NMR (400 MHz, CDCl ₃ ) δ 8.55 (s, 1H), 8.31 (dd, J = 7.1, 1.0 Hz, 1H), 8.12 (s, 1H), 7.51 – 7.45 (m, 1H), 7.40 (s, 1H), 7.00 (s, 1H), 6.68 (dd, J = 7.2, 2.0 Hz, 1H), 5.50 (t, J = 4.6 Hz, 1H), 116

3.36 – 3.21 (m, 2H), 2.56 (dd, J = 6.6, 5.1 Hz, 2H), 2.18 (s, 6H), 1.59 – 1.50 (m, 1H), 1.18 – 1.07 (m, 2H), 0.95 – 0.85 (m, 2H). Example 3: N-[5-[2-cyano-5-[3-(hydroxymethyl)azetidin-1-yl]-4-pyridyl]p yrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 6 mmol) was added to a solution of N-(5-(5-chloro-2- cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropaneca rboxamide (150 mg, 0.444 mmol), azetidin-3-ylmethanol (77 mg, 0.88 mmol), Cs ₂ CO ₃ (257 mg, 0.789 mmol), BINAP (51 mg, 0.082 mmol) and 1,4-dioxane (2 mL) under Ar. The reaction mixture was heated at 90 °C for 16 h. The reaction mixture was partitioned between H ₂ O (15 mL) and ethyl acetate (15 mL), the aqueous phase was extracted with ethyl acetate (15 mL x 3) and the combined extracts were dried over anhydrous Na2SO4, filtered and concentrated to dryness under reduced pressure to afford the product which was purified via FCC using 0-50% of petroleum ether: ethyl acetate gradient to afford the title compound as a white solid (37 mg, 21%). MS (ESI): mass calcd. for C21H20N6O2, 388.2; m/z found, 389.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.12 (s, 1H), 8.58 (d, J = 7.2 Hz, 1H), 8.00 (s, 1H), 7.71 (s, 1H), 7.58 (d, J = 1.2 Hz, 1H), 6.89 (s, 1H), 6.83 (dd, J = 2.0, 7.2 Hz, 1H), 4.70 (t, J = 5.2 Hz, 1H), 3.86 - 3.76 (m, 2H), 3.57 - 3.48 (m, 2H), 3.47 - 3.40 (m, 2H), 2.73 - 2.61 (m, 1H), 1.97 - 1.88 (m, 1H), 0.88 - 0.76 (m, 4H). Example 4: (R)-5-((1-methylpyrrolidin-3-yl)methoxy)-4-(2-(pyridin-3-yla mino)pyrazolo[1,5- a]pyridin-5-yl)picolinonitrile. 7

A mixture of (R)-4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-5-((1-methylpyrro lidin-3- yl)methoxy)picolinonitrile (200 mg, 0.574 mmol), 3-bromopyridine (99.8 mg, 0.631 mmol), Cs ₂ CO ₃ (374 mg, 1.15 mmol), Pd ₂ (dba) ₃ (26.3 mg, 0.029 mmol), xantphos (16.6 mg, 0.029) and 1,4-dioxane (15 mL) was heated overnight at 100 °C under N ₂ atmosphere. The reaction mixture was concentrated under reduced pressure to give the product, which was purified by preparative HPLC with Boston Prime C18150 x 30 mm x 5 um, column (eluent: 35% to 65% (v/v) CH ₃ CN and H ₂ O with 0.04% aq. NH ₄ OH + 10mM NH ₄ HCO ₃ ) to afford yellow solid (107 mg, 43%). MS (ESI): mass calcd. for C24H23N7O, 425.2; m/z found, 426.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.28 (s, 1H), 8.72 (d, J = 2.4 Hz, 1H), 8.68 - 8.61 (m, 2H), 8.18 (s, 1H), 8.09 - 8.01 (m, 2H), 7.82 (d, J = 0.8 Hz, 1H), 7.33 - 7.26 (m, 1H), 6.99 (dd, J = 2.0, 7.2 Hz, 1H), 6.19 (s, 1H), 4.27 - 4.17 (m, 2H), 2.60 - 2.54 (m, 2H), 2.45 - 2.39 (m, 2H), 2.36 - 2.29 (m, 1H), 2.22 (s, 3H), 1.98 - 1.84 (m, 1H), 1.60 - 1.49 (m, 1H). Example 5: N-[5-[2-cyano-5-[(3S)-1-(2,2,2-trifluoroethyl)pyrrolidin-3-y l]oxy-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. -cyano-5-(pyrrolidin-3-yloxy)pyridin-4-yl)pyrazolo[1,5-a]pyr idin-2- yl)cyclopropanecarboxamide (Example 6, 50 mg, 0.13 mmol), DIPEA (33.3 mg, 0.257 mmol) in DMF (2 mL) was added 2,2,2-trifluoroethyl trifluoromethanesulfonate (44.8 mg, 0.193 mmol). The resulting mixture was stirred at room temperature for 16 h. The mixture was then poured into water (40 mL) and extracted with ethyl acetate (20 mL x 3). The organic extracts were washed with brine (20 mL x 3), dried over anhydrous Na2SO4, filtered, and concentrated to dryness under reduced pressure to obtain the product, which was initially purified by FCC (eluent: methanol: ethylacetate = 0:1 to 1:1) and then further purified by SFC over DAICEL CHIRALPAK AD-H 250 mm x 30 mm, 5 µm (eluent: 45% to 45% (v/v) 0.1% NH3-H2O in IPA) to afford the titled compound as a white solid (8.10 mg, 13%). MS (ESI): mass calcd. for 118

C23H21F3N6O2, 470.2; m/z found, 471.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.13 (s, 1H), 8.63 (s, 1H), 8.58 (d, J = 7.2 Hz, 1H), 8.20 (s, 1H), 7.97 - 7.94 (m, 1H), 7.13 (dd, J = 2.0, 7.6 Hz, 1H), 6.92 (s, 1H), 5.35 - 5.29 (m, 1H), 3.32 - 3.25 (m, 2H), 3.17 - 3.10 (m, 1H), 2.98 - 2.89 (m, 2H), 2.76 - 2.67 (m, 1H), 2.40 - 2.29 (m, 1H), 1.98 - 1.85 (m, 2H), 0.86 - 0.80 (m, 4H). Example 6: (S)-N-(5-(2-cyano-5-(pyrrolidin-3-yloxy)pyridin-4-yl)pyrazol o[1,5-a]pyridin-2- yl)cyclopropanecarboxamide . rged NaH (121 mg, 3.03 mmol, 60% in mineral oil) as a solid, followed by addition of 15 mL DMF. The flask was placed into an ice-bath and cooled to 0 °C. A solution of N-(5-(2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide (Intermediate 4, 400 mg, 1.01 mmol) in 3 mL DMF was then added to the mixture dropwise. The resulting mixture was stirred for 5 min before dropwise addition of (S)-pyrrolidin-3-ol (175.7 mg, 2.017 mmol) in 2 mL DMF. The mixture was allowed to warm to room temperature for 1 h, then quenched with water (50 mL) and extracted with ethyl acetate (50 mL x 3). The organic extracts were washed with brine (50 mL x 3), dried over anhydrous Na2SO4, filtered, and concentrated to dryness under reduced pressure to obtain the product, which was purified by FCC (eluent: methanol (contain 10% ammonia) : ethylacetate = 0:1 to 1:1) to afford the title compound as a yellow solid (165.9 mg, 42%). MS (ESI): mass calcd. for C21H20N6O2, 388.2; m/z found, 389.0 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.14 (s, 1H), 8.65 (s, 1H), 8.59 (d, J = 7.6 Hz, 1H), 8.19 (s, 1H), 7.93 (d, J = 1.2 Hz, 1H), 7.11 (dd, J = 2.0, 7.2 Hz, 1H), 6.93 (s, 1H), 5.30 - 5.23 (m, 1H), 3.17 - 3.11 (m, 1H), 3.02 - 2.95 (m, 1H), 2.94 - 2.88 (m, 1H), 2.87 - 2.79 (m, 1H), 2.17 - 2.05 (m, 1H), 1.98 - 1.90 (m, 1H), 1.89 - 1.81 (m, 1H), 0.86 - 0.79 (m, 4H). 119

Example 7: N-[5-[2-cyano-5-[(3S)-1-cyclopropylpyrrolidin-3-yl]oxy-4-pyr idyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. N-(5-(2-cyano-5-(pyrrolidin-3-yloxy)pyridin-4-yl)pyrazolo[1, 5- a]pyridin-2-yl)cyclopropanecarboxamide (100 mg, 0.257 mmol), (1- ethoxycyclopropoxy)trimethylsilane (89.8 mg, 0.515 mmol) and MeOH (2 mL) was added HOAc (126 mg, 0.515 mmol). The mixture was stirred at room temperature for 10 min then NaBH ₃ CN (32.4 mg, 0.515 mmol) was added. The resulting mixture was stirred at room temperature for 12 h. The mixture was poured into water (40 mL) and extracted with ethyl acetate (3 x 20 mL). The organic extracts were washed with brine (3 x 20 mL), dried over anhydrous Na ₂ SO ₄ , filtered, and concentrated to dryness under reduced pressure to obtain the product, which was purified by FCC (eluent: methanol : ethyl acetate = 0:1 to 1:1) to afford the product which was further purified by SFC using a REGIS (s,s) WHELK-O1250 mm x 30 mm, 5 µm column (eluent: 50% to 50% (v/v) 0.1% NH ₃ -H ₂ O in EtOH) to afford the titled compound (14 mg, 12%). MS (ESI): mass calcd. for C ₂₄ H ₂₄ N ₆ O ₂ , 428.2; m/z found, 429.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.14 (s, 1H), 8.64 - 8.57 (m, 2H), 8.19 (s, 1H), 7.95 (d, J = 1.2 Hz, 1H), 7.12 (dd, J = 2.0, 7.2 Hz, 1H), 6.92 (s, 1H), 5.29 - 5.23 (m, 1H), 3.08 - 3.01 (m, 1H), 2.87 - 2.78 (m, 2H), 2.64 - 2.56 (m, 1H), 2.39 - 2.26 (m, 1H), 1.98 - 1.89 (m, 1H), 1.87 - 1.77 (m, 1H), 1.71 - 1.64 (m, 1H), 0.88 - 0.79 (m, 4H), 0.42 - 0.36 (m, 2H), 0.36 - 0.31 (m, 1H), 0.28 - 0.23 (m, 1H). Example 8: N-(5-(2-cyano-5-(((2*S,4*R)-2-(trifluoromethyl)piperidin-4-y l)oxy)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. 120

2S,4R)-4-((6-cyano-4-(2-(cyclopropanecarboxamido)pyrazolo[1, 5- a]pyridin-5-yl)pyridin-3-yl)oxy)-2-(trifluoromethyl)piperidi ne-1-carboxylate. To a 40 mL flask was charged NaH (408.49 mg, 10.213 mmol, 60% in mineral oil) as a solid followed by addition of 10 mL DMF. The flask was placed into an ice bath and cooled to 0 °C. A solution of N-(5-(2- cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclo propanecarboxamide (Intermediate 4, 1100 mg, 3.4 mmol) in 5 mL DMF was then added to the mixture dropwise. The resulting mixture was stirred for 5 min then a solution of (2S,4R)-tert-butyl 4-hydroxy-2- (trifluoromethyl)piperidine-1-carboxylate (1.1 g, 4.1 mmol) in 5 mL DMF was added dropwise. Again, the mixture was stirred for 5 min then allowed to warm to room temperature. The reaction mixture was stirred at room temperature for 1 h, then poured into water (50 mL) and extracted with ethyl acetate (3 x 50 mL). The organic extracts were washed with brine (3 x 50 ml), dried over anhydrous Na ₂ SO ₄ , filtered, and concentrated in-vacuo to obtain the crude, which was purified by FCC (eluent: petroleum ether: ethylacetate = 1:0 to 1:2) to afford the product (770.2 mg, 33%) as white solid which was used as is without further purification. Step B: N-(5-(2-cyano-5-(((2S,4R)-2-(trifluoromethyl)piperidin-4-yl) oxy)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. TFA (0.890 g, 7.80 mmol) was added to a solution of (2S,4R)-tert-butyl 4-((6-cyano-4-(2-(cyclopropanecarboxamido)pyrazolo[1,5- a]pyridin-5-yl)pyridin-3-yl)oxy)-2-(trifluoromethyl)piperidi ne-1-carboxylate (660 mg, 0.976 mmol) and DCM (30 mL). The reaction mixture was quenched with saturated NaHCO ₃ (100 mL), then poured into water (50 mL) and extracted with ethyl acetate (3 x 50 mL). The organic extracts were washed with brine (3 x 50 mL), dried over anhydrous Na2SO4, filtered, and concentrated to dryness under reduced pressure to obtain the crude product, which was purified by FCC (eluent: methanol (contain 10% ammonia): ethylacetate = 0:1 to 1:9) to afford the racemic mixture of the titled compound (518 mg, 85%). MS (ESI): mass calcd. for C ₂₃ H ₂₁ F ₃ N ₆ O ₂ , 470.2; m/z found, 471.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.14 (s, 1H), 8.81 (s, 1H), 8.61 (d, J = 6.8 Hz, 1H), 8.19 (s, 1H), 7.91 (d, J = 0.8 Hz, 1H), 7.09 (dd, J = 121

2.0, 7.6 Hz, 1H), 6.93 (s, 1H), 4.96 - 4.87 (m, 1H), 3.46 - 3.38 (m, 2H), 3.08 - 3.01 (m, 1H), 2.70 - 2.58 (m, 1H), 2.34 - 2.25 (m, 1H), 2.12 - 2.04 (m, 1H), 1.97 - 1.89 (m, 1H), 1.52 - 1.30 (m, 2H), 0.87 - 0.78 (m, 4H). ¹⁹ F NMR (376 MHz, DMSO-d ₆ ) δ -75.45 (d, J = 7.5 Hz, 3F). Example 9: N-(5-(2-cyano-5-((4-(trifluoromethyl)piperidin-4-yl)oxy)pyri din-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide -cyano-4-(2-(cyclopropanecarboxamido)pyrazolo[1,5-a]pyridin- 5- yl)pyridin-3-yl)oxy)-4-(trifluoromethyl)piperidine-1-carboxy late. NaH (75 mg, 1.9 mmol, 60% in mineral oil) was added to a 0°C (ice/water) solution of N-(5-(2- cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclo propanecarboxamide (Intermediate 4, 200 mg, 0.622 mmol) and DMF (10 mL). The mixture was stirred for 10 minutes, and then treated with a solution consisting of tert-butyl 4-hydroxy-4-(trifluoromethyl)piperidine-1- carboxylate (218 mg, 0.809 mmol) and DMF (10 mL) was added dropwise. The resultant mixture was stirred at 0 °C for 2 h. The reactant mixture was quenched with water (50 mL) and extracted with ethyl acetate (50 mL x 3). The organic extracts were washed with brine (50 mL x 3), dried over anhydrous Na ₂ SO ₄ , filtered, and concentrated to dryness under reduced pressure to obtain the crude product, which was purified by flash column chromatography (eluent: petroleum ether: ethyl acetate = 1:0 to 0:1) to afford the product (200 mg, 44.3%) as yellow oil. MS (ESI): mass calcd. for C ₂₈ H ₂₉ F ₃ N ₆ O ₄ , 570.22; m/z 515.2 [M+H-tBu] ⁺ . Step B: N-(5-(2-cyano-5-((4-(trifluoromethyl)piperidin-4-yl)oxy)pyri din-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. Trifluoroacetic acid (3 mL) was added to a solution of tert-butyl 4-((6-cyano-4-(2-(cyclopropanecarboxamido)pyrazolo[1,5-a]pyr idin-5- yl)pyridin-3-yl)oxy)-4-(trifluoromethyl)piperidine-1-carboxy late (200 mg, 0.276 mmol, 78.6% purity) and methylene chloride (20 mL). The reaction mixture was stirred at room-temperature 122

for 2 hours. The reaction mixture was concentrated to dryness under reduced pressure to afford the crude product which was dissolved in water (10 mL), the aqueous phase was adjusted to pH = 8-9 by saturated NaHCO ₃ and extracted with ethyl acetate (50 mL x 3), the organic layers were dried over anhydrous Na ₂ SO ₄ , which was purified by FCC (eluent: methanol (contain 10% ammonia): ethyl acetate = 0:1 to 1:1) to afford the title compound (100 mg, 76%) as a white solid. MS(ESI): mass calcd. for C ₂₃ H ₂₁ F ₃ N ₆ O ₂ , 470.17; m/z 471.2 [M+H] ⁺ . ¹ H NMR (400MHz, DMSO-d ₆ ) δ 11.15 (s, 1H), 8.68 (s, 1H), 8.65 (d, J = 7.6 Hz, 1H), 8.31 (s, 1H), 7.90 (d, J = 1.6 Hz, 1H), 7.05 (dd, J = 2.0, 7.2 Hz, 1H), 6.95 (s, 1H), 2.71 - 2.55 (m, 2H), 2.25 - 2.12 (m, 2H), 2.04 - 1.87 (m, 4H), 1.80 - 1.68 (m, 2H), 0.92 - 0.74 (m, 4H). Example 10: N-[5-[2-cyano-5-[[1-methyl-4-(trifluoromethyl)-4-piperidyl]o xy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. g, 0.319 mmol) was added to a solution consisting of N-(5-(2-cyano-5- ((4-(trifluoromethyl)piperidin-4-yl)oxy)pyridin-4-yl)pyrazol o[1,5-a]pyridin-2- yl)cyclopropanecarboxamide (100 mg, 0.213 mmol) and MeOH (15 mL). The reaction mixture was stirred at room-temperature for 30 min, and then NaBH ₃ CN (40 mg, 0.64 mmol) was added to the reaction mixture. The resultant mixture was stirred at room-temperature for 3 hours. The reactant mixture was quenched with water (50 mL) and extracted with ethyl acetate (50 mL x 3). The organic extracts were washed with brine (50 mL x 3), dried over anhydrous Na ₂ SO ₄ , filtered, and concentrated to dryness under reduced pressure to obtain the crude product, which was purified by flash column chromatography (eluent: methanol (contain 10% aq. ammonia) δ ethyl acetate = 0:1 to 1:1) to afford the product. The post chromatographic product was further purified by preparative HPLC with a Boston Prime C18150 x 30 mm x 5 µm column (eluent: 40% to 70% (v/v) CH3CN and H2O with 0.04% NH3) to afford the title compound (31.3 mg, 30%) as a white solid. MS (ESI): mass calcd. for C24H23F3N6O2, 484.2; m/z found, 485.2 [M+H] ⁺ . ¹ H NMR 123

(400 MHz, DMSO-d6) δ 11.15 (s, 1H), 8.68 (s, 1H), 8.66 (d, J = 7.2 Hz, 1H), 8.30 (s, 1H), 7.89 (s, 1H), 7.02 (dd, J = 1.6, 7.2 Hz, 1H), 6.96 (s, 1H), 2.44 - 2.35 (m, 2H), 2.13 - 2.01 (m, 2H), 1.98 - 1.80 (m, 6H), 1.53 (t, J = 11.2 Hz, 2H), 0.90 - 0.78 (m, 4H). Example 11: N-[5-[2-cyano-5-[[(4R)-3,3-difluoro-1-methyl-4-piperidyl]oxy ]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. mg, 17%) was prepared as described in Example 9 where (R)- tert-butyl 3,3-difluoro-4-hydroxypiperidine-1-carboxylate was used instead of tert-butyl 4- hydroxy-4-(trifluoromethyl)piperidine-1-carboxylate in Step A, followed by the procedure in Example 10. MS (ESI): mass calcd. for C ₂₃ H ₂₂ F ₂ N ₆ O ₂ , 452.2; m/z found, 453.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CD ₃ OD) δ 8.69 (s, 1H), 8.46 (d, J = 7.2 Hz, 1H), 8.01 (s, 1H), 7.81 (d, J = 1.2 Hz, 1H), 7.04 (dd, J = 2.0, 7.2 Hz, 1H), 6.94 (s, 1H), 5.12 - 5.03 (m, 1H), 2.87 - 2.67 (m, 2H), 2.59 - 2.46 (m, 2H), 2.28 (s, 3H), 2.22 - 1.99 (m, 2H), 1.92 - 1.80 (m, 1H), 1.05 - 0.97 (m, 2H), 0.94 - 0.84 (m, 2H). ¹⁹ F NMR (376 MHz, CD ₃ OD) δ -108.43 -110.63 (m, 1F), -113.69 -117.38 (m, 1F). Example 12: N-[5-[2-cyano-5-[[(6R)-4-methyl-1,4-oxazepan-6-yl]oxy]-4-pyr idyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 4

The title compound (41.4 mg, 27%) was prepared as described in Example 9 where (R)- tert-butyl 6-hydroxy-1,4-oxazepane-4-carboxylate was used instead of tert-butyl 4-hydroxy-4- (trifluoromethyl)piperidine-1-carboxylate in Step A, followed by the procedure in Example 10. MS (ESI): mass calcd. for C ₂₃ H ₂₄ N ₆ O ₃ , 432.2; m/z found, 433.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.15 (s, 1H), 8.66 (s, 1H), 8.62 (d, J = 7.6 Hz, 1H), 8.19 (s, 1H), 8.00 (s, 1H), 7.17 (dd, J = 2.0, 7.2 Hz, 1H), 6.92 (s, 1H), 5.18 - 5.08 (m, 1H), 4.06 (dd, J = 4.8, 13.2 Hz, 1H), 3.85 (dd, J = 4.0, 13.2 Hz, 1H), 3.75 - 3.67 (m, 1H), 3.64 - 3.56 (m, 1H), 3.01 (dd, J = 4.8, 13.6 Hz, 1H), 2.77 (dd, J = 6.0, 13.2 Hz, 1H), 2.59 (t, J = 4.8 Hz, 2H), 2.32 (s, 3H), 1.99 - 1.89 (m, 1H), 0.88 - 0.77 (m, 4H). Example 13: N-[5-[2-cyano-5-[[(1R,4R,5R)-2-methyl-2-azabicyclo[2.2.1]hep tan-5-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. mg, 11%) was prepared as described in Example 9 where (1R,4R,5R)-tert-butyl 5-hydroxy-2-azabicyclo[2.2.1]heptane-2-carboxylate was used instead of tert-butyl 4-hydroxy-4-(trifluoromethyl)piperidine-1-carboxylate in Step A, followed by the procedure in Example 10. MS (ESI): mass calcd. for C24H24N6O2, 428.2; m/z found, 429.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.15 (s, 1H), 8.65 (d, J = 7.2 Hz, 1H), 8.58 (s, 1H), 8.18 (s, 1H), 7.98 - 7.86 (m, 1H), 7.10 (dd, J = 1.6, 7.2 Hz, 1H), 6.92 (s, 1H), 5.15 - 5.04 (m, 1H), 3.15 - 3.04 (m, 1H), 2.82 - 2.71 (m, 2H), 2.47 - 2.43 (m, 2H), 2.23 (s, 3H), 2.15 - 2.06 (m, 1H), 1.99 - 1.87 (m, 1H), 1.80 - 1.71 (m, 1H), 1.57 - 1.42 (m, 2H), 0.89 - 0.76 (m, 4H). Example 14: N-(5-(2-cyano-5-(((2*R,4*S)-2-(trifluoromethyl)piperidin-4-y l)oxy)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. 125

g, 13%) was prepared as described in Example 8 using (2R,4S)-2-(trifluoromethyl)piperidin-4-ol in place of (2S,4R)-tert-butyl 4-hydroxy-2- (trifluoromethyl)piperidine-1-carboxylate. MS (ESI): mass calcd. for C23H21F3N6O2, 470.2; m/z found, 471.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.13 (s, 1H), 8.81 (s, 1H), 8.61 (d, J = 6.8 Hz, 1H), 8.19 (s, 1H), 7.91 (d, J = 1.2 Hz, 1H), 7.09 (dd, J = 2.0, 7.6 Hz, 1H), 6.93 (s, 1H), 4.97 - 4.87 (m, 1H), 3.51 - 3.37 (m, 2H), 3.09 - 3.00 (m, 1H), 2.69 - 2.59 (m, 1H), 2.33 - 2.25 (m, 1H), 2.13 - 2.05 (m, 1H), 1.97 - 1.89 (m, 1H), 1.51 - 1.31 (m, 2H), 0.87 - 0.80 (m, 4H). ¹⁹ F NMR (376 MHz, DMSO-d ₆ ) δ -75.45 (d, J = 7.1 Hz, 3F). Example 15: N-[5-[2-cyano-5-[[(4R)-3,3-difluoro-4-piperidyl]oxy]-4-pyrid yl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. mg, 5.3%) was prepared as described in Example 8 where (R)- tert-butyl 3,3-difluoro-4-hydroxypiperidine-1-carboxylate was used instead of (2S,4R)-tert-butyl 4-hydroxy-2-(trifluoromethyl)piperidine-1-carboxylate. MS (ESI): mass calcd. for C ₂₂ H ₂₀ F ₂ N ₆ O ₂ , 438.2; m/z found, 439.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.15 (s, 1H), 8.83 (s, 1H), 8.65 (d, J = 7.2 Hz, 1H), 8.23 (s, 1H), 7.92 (s, 1H), 7.09 (dd, J = 1.6, 7.2 Hz, 1H), 6.92 (s, 1H), 5.40 - 5.26 (m, 1H), 3.07 - 2.97 (m, 1H), 2.93 - 2.81 (m, 1H), 2.80 - 2.71 (m, 1H), 2.69 - 2.60 (m, 2H), 2.13 - 2.03 (m, 1H), 1.98 - 1.89 (m, 1H), 1.85 - 1.71 (m, 1H), 0.86 - 0.80 (m, 4H). ¹⁹ F NMR (376 MHz, DMSO-d ₆ ) δ -110.39 - -111.96 (m, 1F), -115.86 - -118.57 126

(m, 1F). In addition, 1-(4-((5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl )oxy)-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-1-meth yl-1H-pyrazol-3-yl)-2,2,2- trifluoroethan-1-one was also isolated from the reaction mixture and is characterized as Example 121. Example 16: (S)-N-(5-(2-cyano-5-((1-methylpyrrolidin-3-yl)methoxy)pyridi n-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. mg, 77%) was prepared as described in Example 8 where (S)-(1- methylpyrrolidin-3-ly)methanol was used instead of (2S,4R)-tert-butyl 4-hydroxy-2- (trifluoromethyl)piperidine-1-carboxylate. MS (ESI): mass calcd. for C23H24N6O2, 416.20; m/z found, 417.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.11 (s, 1H), 8.65 (s, 1H), 8.61 (dd, J = 7.3, 1.0 Hz, 1H), 8.18 (s, 1H), 7.93 (dd, J = 2.0, 0.9 Hz, 1H), 7.10 (dd, J = 7.3, 2.1 Hz, 1H), 6.91 (s, 1H), 4.21 (d, J = 6.7 Hz, 2H), 2.62 – 2.52 (m, 1H), 2.45 – 2.25 (m, 3H), 2.20 (s, 3H), 1.97 – 1.84 (m, 2H), 1.60 – 1.45 (m, 1H), 0.88 – 0.74 (m, 4H). Example 17: N-[5-[5-[[(1*S,4*S,5*R)-2-azabicyclo[2.2.1]heptan-5-yl]oxy]- 2-cyano-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 1 mg, 14%) was prepared as described in Example 8 where (*S,*S,*R)-tert-butyl 5-hydroxy-2-azabicyclo[2.2.1]heptane-2-carboxylate was used instead of (2S,4R)-tert-butyl 4-hydroxy-2-(trifluoromethyl)piperidine-1-carboxylate. MS (ESI): mass calcd. for C ₂₃ H ₂₂ N ₆ O ₂ , 414.2; m/z found, 415.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CD ₃ OD) δ 8.53 (s, 1H), 127

8.43 (d, J = 7.2 Hz, 1H), 7.98 (s, 1H), 7.78 (d, J = 0.8 Hz, 1H), 7.03 (dd, J = 2.0, 7.6 Hz, 1H), 6.93 (s, 1H), 4.82 - 4.78 (m, 1H), 3.72 - 3.62 (m, 1H), 3.00 - 2.88 (m, 1H), 2.81 - 2.76 (m, 1H), 2.76 - 2.66 (m, 1H), 2.30 - 2.18 (m, 1H), 1.96 - 1.80 (m, 2H), 1.78 - 1.69 (m, 1H), 1.60 - 1.52 (m, 1H), 1.06 - 0.95 (m, 2H), 0.94 - 0.85 (m, 2H). Example 18: N-[5-[5-[[(1*R,4*R,5*S)-2-azabicyclo[2.2.1]heptan-5-yl]oxy]- 2-cyano-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 2 mg, 10%) was prepared as described in Example 8 where (*R,*R,*S)-tert-butyl 5-hydroxy-2-azabicyclo[2.2.1]heptane-2-carboxylate was used instead of (2S,4R)-tert-butyl 4-hydroxy-2-(trifluoromethyl)piperidine-1-carboxylate. MS (ESI): mass calcd. for C23H22N6O2, 414.2; m/z found, 415.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CD3OD) δ 8.53 (s, 1H), 8.43 (d, J = 7.2 Hz, 1H), 7.97 (s, 1H), 7.78 (d, J = 1.2 Hz, 1H), 7.03 (dd, J = 2.0, 7.6 Hz, 1H), 6.93 (s, 1H), 4.82- 4.78 (m, 1H), 3.73 - 3.61 (m, 1H), 2.99 - 2.92 (m, 1H), 2.79 - 2.74 (m, 1H), 2.73 - 2.67 (m, 1H), 2.29 - 2.19 (m, 1H), 1.91 - 1.80 (m, 2H), 1.78 - 1.71 (m, 1H), 1.60 - 1.54 (m, 1H), 1.03 - 0.97 (m, 2H), 0.93 - 0.87 (m, 2H). Example 19: N-[5-[2-cyano-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 8

The title compound (76 mg, 31%) was prepared as described in Example 8 where (S)- tert-butyl 2-(hydroxymethyl)morpholine-4-carboxylate was used instead of (2S,4R)-tert-butyl 4- hydroxy-2-(trifluoromethyl)piperidine-1-carboxylate and N-(5-(5-chloro-2-cyanopyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide was used instead of N-(5-(2-cyano-5- fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanec arboxamide. MS (ESI): mass calcd. for C ₂₂ H ₂₂ N ₆ O ₃ , 418.2; m/z found, 419.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.15 (s, 1H), 8.66 (s, 1H), 8.63 (d, J = 7.2 Hz, 1H), 8.20 (s, 1H), 8.02 (d, J = 1.2 Hz, 1H), 7.16 (dd, J = 2.0, 7.2 Hz, 1H), 6.92 (s, 1H), 4.35 - 4.26 (m, 2H), 3.81 - 3.68 (m, 2H), 3.55 - 3.45 (m, 1H), 2.85 - 2.78 (m, 1H), 2.72 - 2.55 (m, 3H), 1.98 - 1.89 (m, 1H), 0.89 - 0.78 (m, 4H). Example 20: N-[5-[5-[[(1R,3S)-3-aminocyclopentyl]methoxy]-2-cyano-4-pyri dyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. mg, 8.8%) was prepared as described in Example 8 where tert- butyl ((1S,3R)-3-(hydroxymethyl)cyclopentyl)carbamate was used instead of (2S,4R)-tert-butyl 4-hydroxy-2-(trifluoromethyl)piperidine-1-carboxylate and N-(5-(5-chloro-2-cyanopyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide was used instead of N-(5-(2-cyano-5- fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanec arboxamide. MS (ESI): mass calcd. for C ₂₃ H ₂₄ N ₆ O ₂ , 416.2; m/z found, 417.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.14 (s, 1H), 8.66 (s, 1H), 8.63 (d, J = 7.2 Hz, 1H), 8.18 (s, 1H), 7.93 (s, 1H), 7.11 (dd, J = 2.0, 7.2 Hz, 1H), 6.92 (s, 1H), 4.23 (d, J = 7.2 Hz, 2H), 3.22 - 3.20 (m, 1H), 2.41 - 2.26 (m, 1H), 2.03 - 1.89 (m, 2H), 1.75 - 1.64 (m, 2H), 1.58 - 1.47 (m, 1H), 1.34 - 1.19 (m, 2H), 1.13 - 1.01 (m, 1H), 0.88 - 0.78 (m, 4H). Example 21: N-[5-[2-cyano-5-[[(6R)-1,4-oxazepan-6-yl]oxy]-4-pyridyl]pyra zolo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide. 129

mg, 13%) was prepared as described in Example 8 where (R)- tert-butyl 6-hydroxy-1,4-oxazepane-4-carboxylate was used instead of (2S,4R)-tert-butyl 4- hydroxy-2-(trifluoromethyl)piperidine-1-carboxylate. MS (ESI): mass calcd. for C ₂₂ H ₂₂ N ₆ O ₃ , 418.2; m/z found, 419.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.14 (s, 1H), 8.64 (s, 1H), 8.62 (d, J = 7.2 Hz, 1H), 8.18 (s, 1H), 7.98 (s, 1H), 7.16 (dd, J = 2.0, 7.2 Hz, 1H), 6.92 (s, 1H), 5.10 - 5.03 (m, 1H), 4.05 - 3.97 (m, 1H), 3.94 - 3.85 (m, 1H), 3.75 - 3.66 (m, 1H), 3.58 - 3.49 (m, 1H), 3.29 - 3.23 (m, 1H), 2.89 (dd, J = 6.0, 14.0 Hz, 1H), 2.85 - 2.73 (m, 2H), 1.98 - 1.88 (m, 1H), 0.87 - 0.78 (m, 4H). Example 22: N-[5-[5-[[(1R,3R)-3-aminocyclopentyl]methoxy]-2-cyano-4-pyri dyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. mg, 7.5%) was prepared as described in Example 8 where tert- butyl ((1R,3R)-3-(hydroxymethyl)cyclopentyl)carbamate was used instead of (2S,4R)-tert-butyl 4-hydroxy-2-(trifluoromethyl)piperidine-1-carboxylate. MS (ESI): mass calcd. for C ₂₃ H ₂₄ N ₆ O ₂ , 416.2; m/z found, 417.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.14 (s, 1H), 8.65 (s, 1H), 8.63 (d, J = 7.2 Hz, 1H), 8.18 (s, 1H), 7.92 (d, J = 0.8 Hz, 1H), 7.10 (dd, J = 2.0, 7.2 Hz, 1H), 6.92 (s, 1H), 4.23 - 4.14 (m, 2H), 3.29 - 3.28 (m, 1H), 2.59 - 2.53 (m, 1H), 2.01 - 1.84 (m, 2H), 1.79 - 1.69 (m, 1H), 1.60 - 1.42 (m, 2H), 1.39 - 1.27 (m, 2H), 0.87 - 0.78 (m, 4H). Example 23: N-[5-[5-(azetidin-3-ylmethoxy)-2-cyano-4-pyridyl]pyrazolo[1, 5-a]pyridin-2- yl]cyclopropanecarboxamide. 130

mg, 2.7%) was prepared as described in Example 8 where tert- butyl 3-(hydroxymethyl)azetidine-1-carboxylate was used instead of (2S,4R)-tert-butyl 4- hydroxy-2-(trifluoromethyl)piperidine-1-carboxylate. MS (ESI): mass calcd. for C21H20N6O2, 388.2; m/z found, 389.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.14 (s, 1H), 8.69 (s, 1H), 8.61 (d, J = 7.2 Hz, 1H), 8.20 (s, 1H), 7.95 - 7.89 (m, 1H), 7.10 (dd, J = 2.0, 7.2 Hz, 1H), 6.92 (s, 1H), 4.45 (d, J = 6.4 Hz, 2H), 3.57 - 3.48 (m, 2H), 3.37 - 3.33 (m, 2H), 3.11 - 2.96 (m, 1H), 1.98 - 1.89 (m, 1H), 0.86 - 0.79 (m, 4H). Example 24: N-[5-[5-[[(1R,4R,5R)-2-azabicyclo[2.2.1]heptan-5-yl]oxy]-2-c yano-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. mg, 7.4%) was prepared as described in Example 8 where (1R,4R,5R)-tert-butyl 5-hydroxy-2-azabicyclo[2.2.1]heptane-2-carboxylate was used instead of (2S,4R)-tert-butyl 4-hydroxy-2-(trifluoromethyl)piperidine-1-carboxylate. MS (ESI): mass calcd. for C23H22N6O2, 414.2; m/z found, 415.2 [M+H] ⁺ . ¹ H NMR (400MHz, CD3OD) δ 8.48 - 8.41 (m, 2H), 7.97 (s, 1H), 7.80 (s, 1H), 7.06 (dd, J = 2.0, 6.8 Hz, 1H), 6.95 (s, 1H), 5.18 - 5.03 (m, 1H), 3.70 - 3.59 (m, 1H), 3.26 - 3.20 (m, 1H), 2.94 - 2.86 (m, 1H), 2.84 - 2.77 (m, 1H), 2.43 - 2.29 (m, 1H), 1.91 - 1.83 (m, 1H), 1.82 - 1.77 (m, 1H), 1.75 - 1.69 (m, 1H), 1.52 - 1.42 (m, 1H), 1.03 - 0.96 (m, 2H), 0.93 - 0.86 (m, 2H). 131

Example 25: N-[5-[2-cyano-5-[(3R)-1-cyclopropylpyrrolidin-3-yl]oxy-4-pyr idyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. mg, 39%) was prepared as described in Example 7 (using (R)- pyrrolidin-3-ol instead of (S)-pyrrolidin-3-ol) and. MS (ESI): mass calcd. for C24H24N6O2, 428.2; m/z found, 429.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.14 (s, 1H), 8.64 - 8.58 (m, 2H), 8.19 (s, 1H), 7.95 (d, J = 1.2 Hz, 1H), 7.12 (dd, J = 2.0, 7.2 Hz, 1H), 6.91 (s, 1H), 5.29 - 5.23 (m, 1H), 3.08 - 3.01 (m, 1H), 2.87 - 2.79 (m, 2H), 2.65 - 2.55 (m, 1H), 2.39 - 2.28 (m, 1H), 1.99 - 1.89 (m, 1H), 1.88 - 1.78 (m, 1H), 1.72 - 1.64 (m, 1H), 0.86 - 0.80 (m, 4H), 0.41 - 0.36 (m, 2H), 0.36 - 0.31 (m, 1H), 0.28 - 0.23 (m, 1H). Example 26: N-[5-[2-cyano-5-[[(6S)-4-methyl-1,4-oxazepan-6-yl]oxy]-4-pyr idyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. mg, 72%) was prepared as described in Example 7 where paraformaldehyde was used instead of (1-ethoxycyclopropoxy)trimethylsilane and (S)-1,4- oxazepan-6-ol was used instead of (S)-pyrrolidin-3-ol. MS (ESI): mass calcd. for C23H24N6O3, 432.2; m/z found, 433.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.15 (s, 1H), 8.65 (s, 1H), 8.62 (d, J = 7.2 Hz, 1H), 8.19 (s, 1H), 8.00 (d, J = 1.2 Hz, 1H), 7.17 (dd, J = 2.0, 7.2 Hz, 1H), 6.91 (s, 1H), 5.16 - 5.09 (m, 1H), 4.09 - 4.02 (m, 1H), 3.89 - 3.82 (m, 1H), 3.74 - 3.67 (m, 1H), 132

3.64 - 3.56 (m, 1H), 3.05 - 2.97 (m, 1H), 2.81 - 2.73 (m, 1H), 2.62 - 2.56 (m, 2H), 2.31 (s, 3H), 1.98 - 1.89 (m, 1H), 0.86 - 0.80 (m, 4H). Example 27: N-[5-[2-cyano-5-[[(1S,5R)-8-methyl-8-azabicyclo[3.2.1]octan- 3-yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. mg, 22%) was prepared as described in Example 7 where paraformaldehyde was used instead of (1-ethoxycyclopropoxy)trimethylsilane and (1R,3s,5S)-8- azabicyclo[3.2.1]octan-3-ylmethanol hydrochloride was used instead of (S)-pyrrolidin-3-ol. MS (ESI): mass calcd. for C ₂₆ H ₂₈ N ₆ O ₂ , 456.2; m/z found, 457.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.14 (s, 1H), 8.65 (s, 1H), 8.62 (d, J = 7.2 Hz, 1H), 8.17 (s, 1H), 7.96 - 7.87 (m, 1H), 7.09 (dd, J = 2.0, 7.6 Hz, 1H), 6.93 (s, 1H), 4.12 (d, J = 6.4 Hz, 2H), 3.37 (s, 2H), 2.32 (s, 3H), 2.27 - 2.12 (m, 1H), 2.09 - 1.88 (m, 3H), 1.68 - 1.61 (m, 2H), 1.60 - 1.53 (m, 3H), 1.26 - 1.22 (m, 1H), 0.89 - 0.78 (m, 4H). Example 28: N-[5-[2-cyano-5-[[(3S,5R)-1-methyl-5-(trifluoromethyl)-3-pip eridyl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 5 mg, 29%) was prepared as described in Example 7 where was paraformaldehyde used instead of (1-ethoxycyclopropoxy)trimethylsilane and N-(5-(2-cyano-5- chloropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanec arboxamide was used instead of N- 133

(5-(2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2 -yl)cyclopropanecarboxamide and (3S,5R)-5-(trifluoromethyl)piperidin-3-ol was used instead of (S)-pyrrolidin-3-ol. MS (ESI): mass calcd. for C ₂₄ H ₂₃ F ₃ N ₆ O ₂ , 484.2; m/z found, 485.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.14 (s, 1H), 8.84 (s, 1H), 8.61 (d, J = 7.2 Hz, 1H), 8.20 (s, 1H), 7.90 (d, J = 0.8 Hz, 1H), 7.08 (dd, J = 1.6, 7.2 Hz, 1H), 6.94 (s, 1H), 4.95 - 4.82 (m, 1H), 3.23 - 3.12 (m, 1H), 2.98 - 2.88 (m, 1H), 2.86 - 2.72 (m, 1H), 2.46 - 2.40 (m, 1H), 2.27 (s, 3H), 2.02 - 1.86 (m, 3H), 1.37 - 1.24 (m, 1H), 0.87 - 0.79 (m, 4H).19F NMR (376 MHz, DMSO-d ₆ ) δ -70.58 (d, J = 8.6 Hz, 3F). Example 29: N-(5-(2-cyano-5-(((2*S,4*R)-1-methyl-2-(trifluoromethyl)pipe ridin-4- yl)oxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropane carboxamide. 1.6 mg, 13%) was prepared as described in Example 7 where paraformaldehyde was used instead of (1-ethoxycyclopropoxy)trimethylsilane and N-(5-(2- cyano-5-chloropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclo propanecarboxamide was used instead of N-(5-(2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and rac-5-(trifluoromethyl)piperidin-3-ol was used instead of (S)- pyrrolidin-3-ol. The racemic mixture was purified by SFC over DAICEL CHIRALPAK AD 250 mm x 30 mm, 10 µm (eluent: 40% to 40% (v/v) 0.1% NH ₃ -H ₂ O EtOH) to yield the title compound as the first eluting peak. MS (ESI): mass calcd. for C24H23F3N6O2, 484.2; m/z found, 485.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.12 (s, 1H), 8.79 (s, 1H), 8.59 (d, J = 7.2 Hz, 1H), 8.18 (s, 1H), 7.90 (d, J = 1.2 Hz, 1H), 7.08 (dd, J = 2.0, 6.8 Hz, 1H), 6.93 (s, 1H), 4.91 - 4.81 (m, 1H), 3.12 - 3.00 (m, 1H), 2.96 - 2.86 (m, 1H), 2.47 - 2.40 (m, 1H), 2.33 - 2.25 (m, 4H), 2.12 - 2.03 (m, 1H), 1.97 - 1.88 (m, 1H), 1.71 - 1.52 (m, 2H), 0.85 - 0.79 (m, 4H). ¹⁹ F NMR (376 MHz, DMSO-d ₆ ) δ -69.00 (d, J = 7.1 Hz, 3F). 134 Example 30: N-(5-(2-cyano-5-(((2*R,4*S)-1-methyl-2-(trifluoromethyl)pipe ridin-4- yl)oxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropane carboxamide. mg, 9%) was prepared as described in Example 7 where paraformaldehyde was used instead of (1-ethoxycyclopropoxy)trimethylsilane and N-(5-(2- cyano-5-chloropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclo propanecarboxamide was used instead of N-(5-(2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and rac-5-(trifluoromethyl)piperidin-3-ol was used instead of (S)- pyrrolidin-3-ol. The racemic mixture was purified by SFC over DAICEL CHIRALPAK AD 250 mm x 30 mm, 10 µm (eluent: 40% to 40% (v/v) 0.1% NH ₃ -H ₂ O ETOH) to yield the title compound as the second eluting peak MS (ESI): mass calcd. for C24H23F3N6O2, 484.2; m/z found, 485.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.14 (s, 1H), 8.80 (s, 1H), 8.60 (d, J = 7.2 Hz, 1H), 8.19 (s, 1H), 7.91 (d, J = 0.8 Hz, 1H), 7.09 (dd, J = 2.0, 6.8 Hz, 1H), 6.93 (s, 1H), 4.92 - 4.81 (m, 1H), 3.14 - 3.01 (m, 1H), 2.96 - 2.89 (m, 1H), 2.48 - 2.40 (m, 1H), 2.33 - 2.25 (m, 4H), 2.13 - 2.05 (m, 1H), 1.97 - 1.88 (m, 1H), 1.70 - 1.53 (m, 2H), 0.87 - 0.79 (m, 4H). ¹⁹ F NMR (376 MHz, DMSO-d ₆ ) δ -68.98 (d, J = 6.8 Hz, 3F). Example 31: N-[5-[5-(azetidin-3-yloxy)-2-cyano-4-pyridyl]pyrazolo[1,5-a] pyridin-2- yl]cyclopropanecarboxamide. O N _N 135 The title compound (9.0 mg, 14%) was prepared as described in Example 1 where azetidin-3-ol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C ₂₀ H ₁₈ N ₆ O ₂ , 374.1; m/z found, 375.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ11.12 (d, J = 2.9 Hz, 1H), 8.66 – 8.57 (m, 1H), 8.39 (s, 0H), 8.33 (s, 1H), 8.21 (d, J = 4.0 Hz, 1H), 7.98 – 7.92 (m, 1H), 7.18 – 7.09 (m, 1H), 6.94 (d, J = 5.0 Hz, 1H), 5.34 (p, J = 5.9 Hz, 1H), 5.18 (p, J = 11.0, 5.2 Hz, 0H), 3.88 – 3.80 (m, 1H), 3.80 – 3.72 (m, 1H), 3.55 (dd, J = 9.3, 5.5 Hz, 1H), 3.18 (dd, J = 8.5, 5.1 Hz, 1H), 1.95 (d, J = 4.8 Hz, 1H), 0.90 – 0.75 (m, 4H). Example 32: N-[5-[2-cyano-5-[(1-methylazetidin-3-yl)methoxy]-4-pyridyl]p yrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. ed as described in Example 1 where (1- methylazetidin-3-yl)methanol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C22H22N6O2, 402.2; m/z found, 403.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.15 (s, 1H), 8.67 (s, 1H), 8.63 (d, J = 7.3 Hz, 1H), 8.19 (s, 1H), 7.94 (d, J = 0.8 Hz, 1H), 7.09 (dd, J = 1.8, 7.3 Hz, 1H), 6.92 (s, 1H), 4.41 (d, J = 6.4 Hz, 2H), 3.30 - 3.26 (m, 2H), 3.02 - 2.96 (m, 2H), 2.84 - 2.75 (m, 1H), 2.15 (s, 3H), 1.98 - 1.89 (m, 1H), 0.86 - 0.79 (m, 4H). Example 33: rac-N-(5-(2-cyano-5-((5-oxopyrrolidin-3-yl)methoxy)pyridin-4 -yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide. 136

The title compound (91 mg, 71%) was prepared as described in Example 1 where 4-(hydroxymethyl)pyrrolidin-2-one was used instead of (R)-(1-methylpyrrolidin-3- yl)methanol. MS (ESI): mass calcd. for C ₂₂ H ₂₀ N ₆ O ₃ , 416.2; m/z found, 417.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.11 (s, 1H), 8.67 (s, 1H), 8.59 (dd, J = 7.3, 1.0 Hz, 1H), 8.19 (s, 1H), 7.90 (dd, J = 2.0, 0.9 Hz, 1H), 7.54 (s, 1H), 7.09 (dd, J = 7.3, 2.0 Hz, 1H), 6.93 (s, 1H), 4.37 – 4.24 (m, 2H), 3.40 – 3.32 (m, 1H), 3.10 (dd, J = 9.8, 5.8 Hz, 1H), 2.94 – 2.79 (m, 1H), 2.30 (dd, J = 16.7, 9.2 Hz, 1H), 2.06 (dd, J = 16.7, 7.0 Hz, 1H), 1.98 – 1.89 (m, 1H), 0.89 – 0.76 (m, 4H). Example 34: tert-butyl 2-[[6-cyano-4-[2-(cyclopropanecarbonylamino)pyrazolo[1,5-a]p yridin-5- yl]-3-pyridyl]oxy]-6-azaspiro[3.3]heptane-6-carboxylate. mg, 52%) was prepared as described in Example 1 where tert- butyl 6-hydroxy-2-azaspiro[3.3]heptane-2-carboxylate was used instead of (R)-(1- methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C28H30N6O4, 514.2; m/z found, 415.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.11 (s, 1H), 8.64 – 8.57 (m, 1H), 8.45 (s, 1H), 8.19 (s, 1H), 7.95 – 7.88 (m, 1H), 7.09 (dd, J = 7.3, 2.0 Hz, 1H), 6.96 – 6.91 (m, 1H), 5.04 – 4.90 (m, 1H), 3.86 (d, J = 38.3 Hz, 4H), 2.84 – 2.74 (m, 2H), 2.35 – 2.22 (m, 2H), 2.01 – 1.88 (m, 1H), 1.36 (s, 9H), 0.94 – 0.76 (m, 4H). Example 35: tert-butyl (3R)-3-[[6-cyano-4-[2-(cyclopropanecarbonylamino)pyrazolo[1, 5- a]pyridin-5-yl]-3-pyridyl]oxymethyl]pyrrolidine-1-carboxylat e. 137

mg, 60%) was prepared as described in Example 1 where tert- butyl (R)-3-(hydroxymethyl)pyrrolidine-1-carboxylate was used instead of (R)-(1- methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C ₂₇ H ₃₀ N ₆ O ₄ , 502.2; m/z found, 447.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 8.67 (s, 1H), 8.63 – 8.57 (m, 1H), 8.19 (s, 1H), 7.98 – 7.88 (m, 2H), 7.09 (dd, J = 7.3, 2.0 Hz, 1H), 6.93 (s, 1H), 4.42 – 4.21 (m, 2H), 3.46 – 3.33 (m, 2H), 3.26 – 3.15 (m, 1H), 3.10 – 2.98 (m, 1H), 2.69 – 2.60 (m, 1H), 2.01 – 1.89 (m, 2H), 1.77 – 1.60 (m, 1H), 1.36 (d, J = 10.5 Hz, 9H), 0.87 – 0.75 (m, 4H). Example 36: (R)-N-(5-(2-cyano-5-((4-methylmorpholin-2-yl)methoxy)pyridin -4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. mg, 54%) was prepared as described in Example 1 where (R)- (4-methylmorpholin-2-yl)methanol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C23H24N6O3, 432.2; m/z found, 433.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.13 (s, 1H), 8.67 (s, 1H), 8.63 (d, J = 7.2 Hz, 1H), 8.20 (s, 1H), 8.01 (d, J = 1.2 Hz, 1H), 7.16 (dd, J = 2.0, 7.6 Hz, 1H), 6.92 (s, 1H), 4.41 - 4.30 (m, 2H), 3.85 - 3.78 (m, 2H), 3.58 - 3.49 (m, 1H), 2.76 - 2.70 (m, 1H), 2.63 - 2.56 (m, 1H), 2.15 (s, 3H), 1.99 - 1.86 (m, 3H), 0.86 - 0.80 (m, 4H). Example 37: (R)-N-(5-(2-cyano-5-((1-methylpiperidin-3-yl)methoxy)pyridin -4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide. 138

mg, 25%) was prepared as described in Example 1 where (R)-(1- methylpiperidin-3-yl)methanol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C24H26N6O2, 430.2; m/z found, 431.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.13 (s, 1H), 8.68 - 8.61 (m, 2H), 8.18 (s, 1H), 7.91 (d, J = 1.2 Hz, 1H), 7.08 (dd, J = 7.2, 2.0 Hz, 1H), 6.92 (s, 1H), 4.25 - 4.14 (m, 2H), 2.76 - 2.66 (m, 1H), 2.62 - 2.54 (m, 1H), 2.11 (s, 3H), 2.03 - 1.77 (m, 4H), 1.71 - 1.57 (m, 2H), 1.52 - 1.36 (m, 1H), 1.12 - 1.00 (m, 1H), 0.87 - 0.79 (m, 4H). Example 38: (S)-N-(5-(2-cyano-5-((1-methylpiperidin-3-yl)methoxy)pyridin -4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide. mg, 19%) was prepared as described in Example 1 where (S)-(1- methylpiperidin-3-yl)methanol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C24H26N6O2, 430.2; m/z found, 431.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.13 (s, 1H), 8.69 - 8.60 (m, 2H), 8.18 (s, 1H), 7.90 (s, 1H), 7.07 (dd, J = 1.6, 7.2 Hz, 1H), 6.91 (s, 1H), 4.25 - 4.14 (m, 2H), 2.74 - 2.65 (m, 1H), 2.59 - 2.54 (m, 1H), 2.10 (s, 3H), 2.04 - 1.92 (m, 2H), 1.88 - 1.74 (m, 2H), 1.69 - 1.55 (m, 2H), 1.51 - 1.37 (m, 1H), 1.13 - 0.98 (m, 1H), 0.87 - 0.78 (m, 4H). Example 39: N-[5-[2-cyano-5-[[(2S)-4-methylmorpholin-2-yl]methoxy]-4-pyr idyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 139

mg, 19%) was prepared as described in Example 1 where (S)-(4- methylmorpholin-2-yl)methanol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C23H24N6O3, 432.2; m/z found, 433.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.14 (s, 1H), 8.67 (s, 1H), 8.63 (d, J = 7.2 Hz, 1H), 8.21 (s, 1H), 8.01 (d, J = 1.2 Hz, 1H), 7.16 (dd, J = 2.0, 7.2 Hz, 1H), 6.92 (s, 1H), 4.41 - 4.29 (m, 2H), 3.86 - 3.77 (m, 2H), 3.58 - 3.49 (m, 1H), 2.76 - 2.69 (m, 1H), 2.62 - 2.55 (m, 1H), 2.15 (s, 3H), 2.00 - 1.85 (m, 3H), 0.87 - 0.77 (m, 4H). Example 40: N-[5-[2-cyano-5-[(2-oxo-3-azabicyclo[2.2.2]octan-4-yl)methox y]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. mg, 23%) was prepared as described in Example 1 where (1s,4s)- 1-(hydroxymethyl)-2-azabicyclo[2.2.2]octan-3-one was used instead of (R)-(1-methylpyrrolidin- 3-yl)methanol. MS (ESI): mass calcd. for C25H24N6O3, 456.2; m/z found, 457.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.12 (s, 1H), 8.65 (s, 1H), 8.60 (dd, J = 7.2, 1.0 Hz, 1H), 8.20 (s, 1H), 8.12 (d, J = 1.7 Hz, 1H), 8.03 – 7.98 (m, 1H), 7.18 (dd, J = 7.3, 2.0 Hz, 1H), 6.87 (s, 1H), 4.29 (s, 2H), 2.31 – 2.18 (m, 1H), 1.93 (m, J = 6.0, 5.0 Hz, 1H), 1.77 – 1.53 (m, 8H), 0.92 – 0.74 (m, 4H). Example 41: N-[5-[2-cyano-5-[(1-hydroxycyclobutyl)methoxy]-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 140 5 mg, 32%) was prepared as described in Example 1 where 1- (hydroxymethyl)cyclobutan-1-ol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C22H21N5O3, 403.2; m/z found, 404.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.11 (s, 1H), 8.71 (s, 1H), 8.59 (dt, J = 7.3, 0.9 Hz, 1H), 8.19 (s, 1H), 8.05 (dd, J = 2.0, 1.0 Hz, 1H), 7.18 (dd, J = 7.3, 2.0 Hz, 1H), 6.90 (s, 1H), 5.38 (s, 1H), 4.29 (s, 2H), 2.17 – 1.88 (m, 5H), 1.71 – 1.59 (m, 1H), 1.59 – 1.44 (m, 1H), 0.90 – 0.73 (m, 4H). Example 42: N-[5-[2-cyano-5-[(1-hydroxycyclopentyl)methoxy]-4-pyridyl]py razolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. mg, 37%) was prepared as described in Example 1 where 1- (hydroxymethyl)cyclopentan-1-ol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C23H23N5O3, 417.2; m/z found, 418.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.12 (s, 1H), 8.68 (s, 1H), 8.63 – 8.55 (m, 1H), 8.20 (s, 1H), 8.07 – 8.03 (m, 1H), 7.19 (dd, J = 7.3, 2.1 Hz, 1H), 6.97 – 6.84 (m, 1H), 4.68 (s, 1H), 4.23 (s, 2H), 2.02 – 1.89 (m, 1H), 1.75 – 1.50 (m, 8H), 0.91 – 0.72 (m, 4H). Example 43: N-[5-[2-cyano-5-(4-piperidylmethoxy)-4-pyridyl]pyrazolo[1,5- a]pyridin-2- yl]cyclopropanecarboxamide.

mg, 19%) was prepared as described in Example 1 where piperidin-4-ylmethanol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C ₂₃ H ₂₄ N ₆ O ₂ , 416.2; m/z found, 417.2 [M+H] ⁺ ; ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.15 (s, 1H), 8.67 (s, 1H), 8.63 (d, J = 7.2 Hz, 1H), 8.17 (s, 1H), 7.90 (s, 1H), 7.09 (dd, J = 7.2, 1.6 Hz, 1H), 6.92 (s, 1H), 4.15 (d, J = 6.0 Hz, 2H), 2.99 - 2.85 (m, 2H), 2.48 - 2.38 (m, 2H), 2.00 - 1.90 (m, 1H), 1.89 - 1.77 (m, 1H), 1.70 - 1.56 (m, 2H), 1.24 - 1.07 (m, 2H), 0.90 - 0.76 (m, 4H). Example 44: N-[5-[5-[(1-aminocyclobutyl)methoxy]-2-cyano-4-pyridyl]pyraz olo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide. mg, 19%) was prepared as described in Example 1 where (1- aminocyclobutyl)methanol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C ₂₂ H ₂₂ N ₆ O ₂ , 402.2; m/z found, 403.2 [M+H] ⁺ . ¹ H NMR (600 MHz, DMSO-d ₆ ) δ 11.10 (s, 1H), 8.70 (s, 1H), 8.64 – 8.57 (m, 1H), 8.19 (s, 1H), 8.05 – 7.96 (m, 1H), 7.15 (dd, J = 7.3, 2.0 Hz, 1H), 6.90 (s, 1H), 4.20 (s, 2H), 2.08 – 2.01 (m, 2H), 1.97 – 1.90 (m, 1H), 1.89 – 1.76 (m, 4H), 1.76 – 1.67 (m, 1H), 1.66 – 1.56 (m, 1H), 0.86 – 0.79 (m, 4H). Example 45: N-[5-[2-Cyano-5-[[(3R)-pyrrolidin-3-yl]methoxy]-4-pyridyl]py razolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 142

mg, 63%) was prepared as described in Example 1 where (R)- pyrrolidin-3-ylmethanol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C22H22N6O2, 402.2; m/z found, 403.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.12 (s, 1H), 8.69 – 8.59 (m, 2H), 8.18 (s, 1H), 7.94 – 7.89 (m, 1H), 7.09 (dd, J = 7.3, 2.0 Hz, 1H), 6.91 (s, 1H), 4.32 – 4.15 (m, 2H), 2.84 (dd, J = 10.9, 7.5 Hz, 1H), 2.81 – 2.64 (m, 2H), 2.57 (dd, J = 10.9, 5.7 Hz, 1H), 2.46 – 2.37 (m, 1H), 1.99 – 1.88 (m, 1H), 1.87 – 1.71 (m, 1H), 1.47 – 1.35 (m, 1H), 0.91 – 0.73 (m, 5H). Example 46: N-[5-[2-Cyano-5-(cyclopropoxy)-4-pyridyl]pyrazolo[1,5-a]pyri din-2- yl]cyclopropanecarboxamide. mg, 8%) was prepared as described in Example 1 where cyclopropanol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C ₂₀ H ₁₇ N ₅ O ₂ , 359.1; m/z found, 360.2 [M+H] ⁺ ; ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.12 (s, 1H), 8.93 (s, 1H), 8.59 (d, J = 7.6 Hz, 1H), 8.18 (s, 1H), 7.86 (d, J = 1.2 Hz, 1H), 7.03 (dd, J = 7.2, 2.0, Hz 1H), 6.93 (s, 1H), 4.28 - 4.20 (m, 1H), 1.98 - 1.90 (m, 1H), 0.94 - 0.88 (m, 2H), 0.86 - 0.77 (m, 6H). Example 47: N-[5-[2-Cyano-5-(3-pyridylmethoxy)-4-pyridyl]pyrazolo[1,5-a] pyridin-2- yl]cyclopropanecarboxamide. 143

mg, 26%) was prepared as described in Example 1 where pyridin-3-ylmethanol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C ₂₃ H ₁₈ N ₆ O ₂ , 410.1; m/z found, 411.0 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.14 (s, 1H), 8.81 (s, 1H), 8.69 (d, J = 1.2 Hz, 1H), 8.60 (d, J = 7.2 Hz, 1H), 8.57 - 8.54 (m, 1H), 8.22 (s, 1H), 7.93 (d, J = 0.8 Hz, 1H), 7.91 - 7.87 (m, 1H), 7.43 (dd, J = 8.0, 4.8 Hz, 1H), 7.11 (dd, J = 7.2, 2.0 Hz, 1H), 6.89 (s, 1H), 5.50 (s, 2H), 1.97 - 1.88 (m, 1H), 0.86 - 0.79 (m, 4H). Example 48: N-(5-(2-Cyano-5-(pyridin-2-ylmethoxy)pyridin-4-yl)pyrazolo[1 ,5-a]pyridin-2- yl)cyclopropanecarboxamide. The title compound (16 mg, 16%) was prepared as described in Example 1 where pyridin-2-ylmethanol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C23H18N6O2, 410.1; m/z found, 411.0 [M+H] ⁺ ; ¹ H NMR (400 MHz, DMSO-d6) δ 11.14 (s, 1H), 8.77 (s, 1H), 8.63 (d, J = 7.2 Hz, 1H), 8.60 (d, J = 4.4 Hz, 1H), 8.22 (s, 1H), 8.00 (s, 1H), 7.90 - 7.80 (m, 1H), 7.52 (d, J = 7.6 Hz, 1H), 7.40 - 7.31 (m, 1H), 7.19 (dd, J = 6.8, 0.8 Hz, 1H), 6.91 (s, 1H), 5.55 (s, 2H), 1.98 - 1.86 (m, 1H), 0.89 - 0.77 (m, 4H). Example 49: (*R)-N-(5-(2-Cyano-5-(3,3,3-trifluoro-2-hydroxy-2-methylprop oxy)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. 144

mg, 27%) was prepared as described in Example 1 where 3,3,3- trifluoro-2-methylpropane-1,2-diol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. The racemic mixture was separated by SFC over DAICEL CHIRALCEL OD-H 250 mm x 30 mm, 5 µm (eluent: 40% to 40% (v/v) 0.1% NH ₃ -H ₂ O in ETOH). The first eluting isomer was designated as (*R). MS (ESI): mass calcd. for C21H18F3N5O3, 445.1; m/z found, 446.1 [M+H] ⁺ . 1H NMR (400 MHz, DMSO-d ₆ ) δ 11.15 (s, 1H), 8.74 (s, 1H), 8.63 (d, J = 7.2 Hz, 1H), 8.22 (s, 1H), 7.98 (d, J = 0.8 Hz, 1H), 7.13 (dd, J = 7.2, 2.0 Hz, 1H), 6.91 (s, 1H), 6.49 (s, 1H), 4.45 (d, J = 10.0 Hz, 1H), 4.36 (d, J = 10.4 Hz, 1H), 1.98 - 1.89 (m, 1H), 1.37 (s, 3H), 0.87 - 0.78 (m, 4H) 1 ⁹ F NMR (376 MHz, DMSO-d6) δ -79.61 (s, 3F). Example 50: (*S)-N-(5-(2-Cyano-5-(3,3,3-trifluoro-2-hydroxy-2-methylprop oxy)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. mg, 15%) was prepared as described in Example 1 where 3,3,3- trifluoro-2-methylpropane-1,2-diol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. The racemic mixture was separated by SFC over DAICEL CHIRALCEL OD-H 250 mm x 30 mm, 5 µm (eluent: 40% to 40% (v/v) 0.1%NH ₃ in H ₂ O : EtOH). The second eluting isomer was designated as (*S). MS (ESI): mass calcd. for C21H18F3N5O3, 445.1; m/z found, 446.2 [M+H] ⁺ ; 1H NMR (400 MHz, DMSO-d6) δ 11.15 (s, 1H), 8.74 (s, 1H), 8.62 (d, J = 7.2 Hz, 1H), 8.22 (s, 1H), 7.98 (d, J = 0.8 Hz, 1H), 7.13 (dd, J = 7.2, 1.6 Hz, 1H), 6.91 (s, 1H), 6.49 (br s, 1H), 4.45 145

(d, J = 10.4 Hz, 1H), 4.36 (d, J = 10.4 Hz, 1H), 1.98 - 1.89 (m, 1H), 1.37 (s, 3H), 0.85 - 0.80 (m, 4H); ¹⁹ F NMR (376 MHz, DMSO-d6) δ -79.62 (s, 3F). Example 51: N-[5-[2-cyano-5-[(1-methyl-4-piperidyl)methoxy]-4-pyridyl]py razolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 8 mg, 33%) was prepared as described in Example 1 where (1- methylpiperidin-4-yl)methanol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C ₂₄ H ₂₆ N ₆ O ₂ , 430.2; m/z found, 431.2 [M+H] ⁺ ; ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.15 (s, 1H), 8.66 (s, 1H), 8.63 (d, J = 7.2 Hz, 1H), 8.17 (s, 1H), 7.90 (s, 1H), 7.08 (dd, J = 7.6, 2.0 Hz, 1H), 6.91 (s, 1H), 4.17 (d, J = 6.0 Hz, 2H), 2.81 - 2.73 (m, 2H), 2.14 (s, 3H), 1.97 - 1.90 (m, 1H), 1.90 - 1.81 (m, 2H), 1.77 - 1.62 (m, 3H), 1.35 - 1.23 (m, 2H), 0.87 - 0.79 (m, 4H). Example 52: N-[5-[2-Cyano-5-(2-hydroxy-2-methyl-propoxy)-4-pyridyl]pyraz olo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide. mg, 46%) was prepared as described in Example 1 where 2- methylpropane-1,2-diol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C ₂₁ H ₂₁ N ₅ O ₃ , 391.2; m/z found, 392.0 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.15 (s, 1H), 8.67 (s, 1H), 8.63 (d, J = 7.2 Hz, 1H), 8.20 (s, 1H), 8.03 (d, J = 1.2 Hz, 1H), 7.17 146 (dd, J = 7.6, 2.0 Hz, 1H), 6.91 (s, 1H), 4.77 (s, 1H), 4.08 (s, 2H), 1.98 - 1.90 (m, 1H), 1.17 (s, 6H), 0.85 - 0.80 (m, 4H). Example 53: trans-N-(5-(2-Cyano-5-(((1r,4r)-4-hydroxycyclohexyl)methoxy) pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. mg, 26%) was prepared as described in Example 1 where (trans)- 4-(hydroxymethyl)cyclohexanol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C24H25N5O3, 431.2; m/z found, 432.2 [M+H] ⁺ . ¹ H NMR (400MHz, DMSO-d ₆ ) δ 11.13 (s, 1H), 8.69 - 8.58 (m, 2H), 8.17 (s, 1H), 7.91 (s, 1H), 7.08 (dd, J = 1.6, 7.2 Hz, 1H), 6.91 (s, 1H), 4.52 (d, J = 4.0 Hz, 1H), 4.13 (d, J = 6.0 Hz, 2H), 1.98 - 1.90 (m, 1H), 1.88 - 1.79 (m, 2H), 1.78 - 1.66 (m, 3H), 1.18 - 1.03 (m, 4H), 0.89 - 0.77 (m, 4H). Example 54: N-[5-[2-Cyano-5-(1-methylazetidin-3-yl)oxy-4-pyridyl]pyrazol o[1,5-a]pyridin-2- yl]cyclopropanecarboxamide. mg, 26%) was prepared as described in Example 1 where 3- hydroxy-1-methylazetidine was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C21H20N6O2, 388.2; m/z found, 389.2 [M+H] ⁺ . ¹ H NMR (400MHz, DMSO-d6) δ 11.15 (s, 1H), 8.63 (d, J = 7.6 Hz, 1H), 8.38 (s, 1H), 8.21 (s, 1H), 7.95 (s, 1H), 7.13

(d, J = 6.8 Hz, 1H), 6.95 (s, 1H), 5.16 - 5.06 (m, 1H), 3.80 - 3.68 (m, 2H), 3.13 - 2.97 (m, 2H), 2.28 (s, 3H), 1.98 - 1.89 (m, 1H), 0.89 - 0.79 (m, 4H). Example 55: tert-butyl 2-[[6-Cyano-4-[2-(cyclopropanecarbonylamino)pyrazolo[1,5-a]p yridin- 5-yl]-3-pyridyl]oxy]acetate. mg, 2%) was prepared as described in Example 1 where tert- butyl 2-hydroxyacetate was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C23H23N5O4, 433.2; m/z found, 434.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.13 (s, 1H), 8.64 (d, J = 7.2 Hz, 1H), 8.59 (s, 1H), 8.23 (s, 1H), 8.00 (d, J = 0.8 Hz, 1H), 7.16 (dd, J = 7.2, 2.0 Hz, 1H), 6.92 (s, 1H), 5.07 (s, 2H), 1.98 - 1.88 (m, 1H), 1.43 (s, 9H), 0.85 - 0.81 (m, 4H). Example 56: (*R)-N-(5-(5-((1-Acetylpyrrolidin-3-yl)oxy)-2-cyanopyridin-4 -yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide. (41 mg, 10%) was prepared as described in Example 1 where 1-(3- hydroxypyrrolidin-1-yl)ethenone was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. The racemic mixture was separated by SFC over REGIS (s,s) WHELK-O1250 mm x 30 mm, 5 µm (eluent: 40% to 40% (v/v) 0.1% aq. NH ₄ OH EtOH). MS (ESI): mass calcd. for C ₂₃ H ₂₂ N ₆ O ₃ , 430.2; m/z found, 431.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.13 (s, 1H), 8.74 (s, 1H), 8.64 - 8.54 (m, 1H), 8.25 - 8.16 (m, 1H), 7.86 (s, 1H), 7.07 - 6.97 (m, 1H), 6.92 (s, 1H), 5.53 - 148

5.38 (m, 1H), 3.85 - 3.40 (m, 3H), 3.30 - 3.16 (m, 1H), 2.38 - 2.21 (m, 1H), 2.21 - 2.08 (m, 1H), 1.98 - 1.86 (m, 4H), 0.92 - 0.76 (m, 4H). Example 57: (*S)-N-(5-(5-((1-Acetylpyrrolidin-3-yl)oxy)-2-cyanopyridin-4 -yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide. 7 mg, 15%) was prepared as described in Example 1 where 1-(3- hydroxypyrrolidin-1-yl)ethenone was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. The racemic mixture was separated by SFC over REGIS (s,s) WHELK-O1250 mm x 30 mm, 5 µm (eluent: 40% to 40% (v/v) 0.1% aq. NH4OH EtOH). MS (ESI): mass calcd. for C23H22N6O3, 430.2; m/z found, 431.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.13 (s, 1H), 8.74 (s, 1H), 8.63 - 8.54 (m, 1H), 8.23 - 8.18 (m, 1H), 7.86 (s, 1H), 7.07 - 6.98 (m, 1H), 6.92 (s, 1H), 5.52 - 5.39 (m, 1H), 3.86 - 3.39 (m, 3H), 3.30 - 3.22 (m, 1H), 2.33 - 2.21 (m, 1H), 2.20 - 2.11 (m, 1H), 1.99 - 1.91 (m, 1H), 1.90 (s, 3H), 0.87 - 0.79 (m, 4H). Example 58: (*R)-N-(5-(2-cyano-5-((1-methylpyrrolidin-3-yl)oxy)pyridin-4 -yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide. mg, 6.7%) was prepared as described in Example 1 where 1- methylpyrrolidin-3-ol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. The racemic mixture was separated by SFC over DAICEL CHIRALCEL OJ-H 250 mm x 30 mm, 5 µm 149 (eluent: 40% to 40% (v/v) 0.1% aq. NH4OH-EtOH). MS (ESI): mass calcd. for C22H22N6O2, 402.2; m/z found, 403.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.15 (s, 1H), 8.63 - 8.58 (m, 2H), 8.19 (s, 1H), 7.95 (s, 1H), 7.13 (dd, J = 1.6, 7.2 Hz, 1H), 6.94 (s, 1H), 5.33 - 5.27 (m, 1H), 2.99 - 2.90 (m, 1H), 2.89 - 2.76 (m, 2H), 2.50 - 2.49 (m, 1H), 2.47 - 2.39 (m, 1H), 2.34 (s, 3H), 2.00 - 1.84 (m, 2H), 0.87 - 0.78 (m, 4H). Example 59: (*S)-N-(5-(2-cyano-5-((1-methylpyrrolidin-3-yl)oxy)pyridin-4 -yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide. was prepared as described in Example 1 where 1- methylpyrrolidin-3-ol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. The racemic mixture was separated by SFC over DAICEL CHIRALCEL OJ-H 250 mm x 30 mm, 5 µm (eluent: 40% to 40% (v/v) 0.1% aq. NH ₄ OH-EtOH). MS (ESI): mass calcd. for C ₂₂ H ₂₂ N ₆ O ₂ , 402.2; m/z found, 403.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.15 (s, 1H), 8.62 (d, J = 7.6 Hz, 1H), 8.59 (s, 1H), 8.19 (s, 1H), 7.96 - 7.92 (m, 1H), 7.12 (dd, J = 2.0, 7.2 Hz, 1H), 6.93 (s, 1H), 5.33 - 5.23 (m, 1H), 2.93 - 2.85 (m, 1H), 2.84 - 2.70 (m, 2H), 2.47 - 2.35 (m, 2H), 2.30 (s, 3H), 2.00 - 1.78 (m, 2H), 0.88 - 0.75 (m, 4H). Example 60: N-[5-[5-[(1-acetyl-4-piperidyl)methoxy]-2-cyano-4-pyridyl]py razolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 50 The title compound (22 mg, 20%) was prepared as described in Example 1 where 1-(4- (hydroxymethyl)piperidin-1-yl)ethenone was used instead of (R)-(1-methylpyrrolidin-3- yl)methanol. MS (ESI): mass calcd. for C ₂₅ H ₂₆ N ₆ O ₃ , 458.2; m/z found, 459.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.16 (s, 1H), 8.67 (s, 1H), 8.62 (d, J = 7.2 Hz, 1H), 8.19 (s, 1H), 7.90 (s, 1H), 7.08 (dd, J = 2.0, 7.2 Hz, 1H), 6.93 (s, 1H), 4.40 - 4.31 (m, 1H), 4.24 - 4.15 (m, 2H), 3.85 - 3.76 (m, 1H), 3.06 - 2.96 (m, 1H), 2.58 - 2.52 (m, 1H), 2.10 - 2.00 (m, 1H), 1.99 - 1.90 (m, 4H), 1.78 - 1.65 (m, 2H), 1.29 - 1.17 (m, 1H), 1.16 - 1.04 (m, 1H), 0.89 - 0.78 (m, 4H). Example 61: N-[5-[2-cyano-5-[[6-(trifluoromethyl)-3-pyridyl]methoxy]-4-p yridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. ) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and (6-(trifluoromethyl)pyridin-3-yl)methanol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C24H17F3N6O2, 478.1; m/z found, 479.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.13 (s, 1H), 8.86 (s, 1H), 8.81 (s, 1H), 8.61 (d, J = 7.6 Hz, 1H), 8.23 (s, 1H), 8.16 (d, J = 8.0 Hz, 1H), 7.98 - 7.92 (m, 2H), 7.14 (dd, J = 2.0, 7.6 Hz, 1H), 6.92 (s, 1H), 5.63 (s, 2H), 1.99 - 1.88 (m, 1H), 0.87 - 0.78 (m, 4H). ¹⁹ F NMR (376 MHz, DMSO-d ₆ ) δ -66.41 (s, 3F). Example 62: N-[5-[2-cyano-5-[[2-(trifluoromethyl)-4-pyridyl]methoxy]-4-p yridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 151

mg, 12%) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and (2-(trifluoromethyl)pyridin-4-yl)methanol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C ₂₄ H ₁₇ F ₃ N ₆ O ₂ , 478.1; m/z found, 479.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.10 (s, 1H), 8.58 - 8.52 (m, 2H), 8.22 (s, 1H), 7.78 (s, 1H), 7.52 (s, 1H), 7.31 (d, J = 4.8 Hz, 1H), 6.75 (s, 1H), 6.72 (d, J = 7.2 Hz, 1H), 4.16 (s, 2H), 1.94 - 1.85 (m, 1H), 0.82 - 0.76 (m, 4H). ¹⁹ F NMR (376 MHz, DMSO-d ₆ ) δ - 66.58 (s, 3F). Example 63: N-[5-[2-cyano-5-[(2S)-2-hydroxypropoxy]-4-pyridyl]pyrazolo[1 ,5-a]pyridin-2- yl]cyclopropanecarboxamide. 3 mg, 11%) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and (S)-propane-1,2-diol was used instead of (R)-(1- methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C20H19N5O3, 377.1; m/z found, 378.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.15 (s, 1H), 8.68 (s, 1H), 8.61 (d, J=7.2 Hz, 1H), 8.19 (s, 1H), 8.04 - 7.99 (m, 1H), 7.18 (dd, J=2.0, 7.2 Hz, 1H), 6.92 (s, 1H), 5.03 (d, J=4.8 Hz, 1H), 4.19 (d, J=5.2 Hz, 2H), 4.06 - 3.95 (m, 1H), 2.03 - 1.87 (m, 1H), 1.15 (d, J=6.4 Hz, 3H), 0.89 - 0.77 (m, 4H). 152 Example 64: N-[5-[2-cyano-5-(4-hydroxycyclohexoxy)-4-pyridyl]pyrazolo[1, 5-a]pyridin-2- yl]cyclopropanecarboxamide. was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and (trans)-cyclohexane-1,4-diol was used instead of (R)-(1- methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C23H23N5O3, 417.2; m/z found, 418.2 [M+H] ⁺ . ¹ H NMR (400MHz, DMSO-d ₆ ) δ 11.13 (s, 1H), 8.72 (s, 1H), 8.60 (d, J = 7.2 Hz, 1H), 8.17 (s, 1H), 7.89 (d, J = 0.8 Hz, 1H), 7.08 (dd, J = 2.0, 7.6 Hz, 1H), 6.92 (s, 1H), 4.86 - 4.76 (m, 1H), 4.59 (d, J = 3.6 Hz, 1H), 3.61 - 3.48 (m, 1H), 2.10 - 2.00 ( m, 2H), 1.98 - 1.89 (m, 1H), 1.80 - 1.70 (m, 2H), 1.56 - 1.44 (m, 2H), 1.43 - 1.31 (m, 2H), 0.98 - 0.68 (m, 4H). Example 65: N-[5-[2-cyano-5-[[(3S)-1-methyl-3-piperidyl]oxy]-4-pyridyl]p yrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. The title compound (31.5 mg, 16%) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- 153 yl)cyclopropanecarboxamide and (S)-1-methylpiperidin-3-ol was used instead of (R)-(1- methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C23H24N6O2, 416.2; m/z found, 417.2 [M+H] ⁺ . ¹ H NMR (400MHz, DMSO-d ₆ ) δ 11.15 (s, 1H), 8.73 (s, 1H), 8.61 (d, J = 7.2 Hz, 1H), 8.19 (s, 1H), 8.04 (d, J = 0.8 Hz, 1H), 7.19 (dd, J = 2.0, 7.6 Hz, 1H), 6.91 (s, 1H), 4.99 - 4.84 (m, 1H), 2.76 - 2.61 (m, 1H), 2.44 - 2.32 (m, 2H), 2.30 - 2.20 (m, 1H), 2.17 (s, 3H), 2.04 - 1.86 (m, 2H), 1.78 - 1.65 (m, 1H), 1.61 - 1.42 (m, 2H), 0.89 - 0.76 (m, 4H). Example 66: N-[5-[2-cyano-5-[[(1S,5R)-8-methyl-8-azabicyclo[3.2.1]octan- 3-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. %) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and (1R,3r,5S)-8-methyl-8-azabicyclo[3.2.1]octan-3-ol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C25H26N6O2, 442.2; m/z found, 443.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.14 (s, 1H), 8.63 (d, J = 7.2 Hz, 1H), 8.51 (s, 1H), 8.14 (s, 1H), 7.88 (s, 1H), 7.07 (dd, J = 2.0, 7.2 Hz, 1H), 6.92 (s, 1H), 5.03 - 4.92 (m, 1H), 2.95 (s, 2H), 2.16 - 2.04 (m, 5H), 1.99 - 1.89 (m, 1H), 1.80 (s, 1H), 1.77 (s, 1H), 1.71 - 1.61 (m, 2H), 1.50 - 1.43 (m, 2H), 0.88 - 0.78 (m, 4H). Example 67: N-[5-[5-[[(1S,5R)-8-azabicyclo[3.2.1]octan-3-yl]methoxy]-2-c yano-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 154 .3%) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and (1R,3s,5S)-8-azabicyclo[3.2.1]octan-3-ylmethanol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C25H26N6O2, 442.2; m/z found, 443.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.15 (s, 1H), 8.69 - 8.60 (m, 2H), 8.18 (s, 1H), 7.93 (s, 1H), 7.10 (d, J = 6.4 Hz, 1H), 6.92 (s, 1H), 4.07 (d, J = 6.4 Hz, 2H), 3.45 - 3.39 (m, 2H), 2.24 - 2.09 (m, 1H), 2.02 - 1.86 (m, 1H), 1.73 - 1.61 (m, 2H), 1.59 - 1.43 (m, 4H), 1.38 - 1.25 (m, 2H), 0.91 - 0.76 (m, 4H). Example 68: N-[5-[2-cyano-5-[(3-hydroxycyclobutyl)methoxy]-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. The title compound (16 mg, 47%) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and 3-(hydroxymethyl)cyclobutanol was used instead of (R)-(1- methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C22H21N5O3, 403.2; m/z found, 404.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.14 (s, 1H), 8.65 (s, 1H), 8.61 (d, J = 7.2 Hz, 1H), 8.19 (s, 1H), 7.94 (d, J = 1.2 Hz, 1H), 7.11 (dd, J = 2.0, 7.2 Hz, 1H), 6.93 (s, 1H), 5.07 (s, 1H), 155 4.27 (d, J = 6.4 Hz, 2H), 4.05 - 3.95 (m, 1H), 2.34 - 2.24 (m, 2H), 2.22 - 2.08 (m, 1H), 1.99 - 1.88 (m, 1H), 1.74 - 1.61 (m, 2H), 0.87 - 0.79 (m, 4H). Example 69: N-[5-[2-cyano-5-[3-(hydroxymethyl)cyclobutoxy]-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 3%) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and 3-(hydroxymethyl)cyclobutanol was used instead of (R)-(1- methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C22H21N5O3, 403.2; m/z found, 404.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.14 (s, 1H), 8.62 (d, J = 7.6 Hz, 1H), 8.47 (s, 1H), 8.19 (s, 1H), 7.94 (d, J = 1.2 Hz, 1H), 7.12 (dd, J = 1.6, 7.2 Hz, 1H), 6.94 (s, 1H), 5.00 - 4.90 (m, 1H), 4.60 (t, J = 5.6 Hz, 1H), 3.39 (t, J = 5.2 Hz, 2H), 2.59 - 2.52 (m, 2H), 2.15 - 2.02 (m, 1H), 1.98 - 1.83 (m, 3H), 0.88 - 0.78 (m, 4H). Example 70: N-[5-[2-cyano-5-(3-hydroxyazetidin-1-yl)-4-pyridyl]pyrazolo[ 1,5-a]pyridin-2- yl]cyclopropanecarboxamide. 40%) was prepared as described in Example 2 where azetidin-3-ol was used instead of N,N-dimethylethylenediamine. MS (ESI): mass calcd. for C20H18N6O2, 374.1; m/z found, 375.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.09 (s, 1H), 156

8.58 (dt, J = 7.1, 0.9 Hz, 1H), 8.01 (s, 1H), 7.72 (s, 1H), 7.57 (dd, J = 2.0, 0.9 Hz, 1H), 6.89 (s, 1H), 6.82 (dd, J = 7.1, 2.0 Hz, 1H), 5.59 (d, J = 6.0 Hz, 1H), 4.46 – 4.35 (m, 1H), 4.01 – 3.92 (m, 2H), 3.57 – 3.49 (m, 2H), 2.00 – 1.86 (m, 1H), 0.88 – 0.76 (m, 4H). Example 71: N-[5-[2-cyano-5-[[(3R)-1-methylpyrrolidin-3-yl]methylamino]- 4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. mg, 56%) was prepared as described in Example 2 where (R)-1- methyl-3-(aminomethyl)pyrrolidine was used instead of N,N-dimethylethylenediamine. MS (ESI): mass calcd. for C23H25N7O, 415.2; m/z found, 416.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.08 (s, 1H), 8.64 (d, J = 7.1 Hz, 1H), 8.12 (s, 1H), 7.68 – 7.57 (m, 2H), 6.89 (s, 1H), 6.79 (dd, J = 7.1, 2.0 Hz, 1H), 6.68 (t, J = 4.9 Hz, 1H), 3.24 – 3.09 (m, 2H), 2.59 (td, J = 8.5, 3.7 Hz, 1H), 2.39 (dd, J = 9.2, 3.1 Hz, 1H), 2.24 (dd, J = 9.2, 7.1 Hz, 1H), 2.08 (q, J = 8.3 Hz, 1H), 1.97 – 1.86 (m, 5H), 1.58 – 1.42 (m, 1H), 0.89 – 0.72 (m, 4H). Example 72: N-[5-[2-cyano-5-[3-(dimethylaminomethyl)azetidin-1-yl]-4-pyr idyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. mg, 48%) was prepared as described in Example 2 where 1- (azetidin-3-yl)-N,N-dimethylmethanamine dihydrochloride was used instead of N,N- dimethylethylenediamine. MS (ESI): mass calcd. for C23H25N7O, 415.2; m/z found, 416.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.09 (s, 1H), 8.57 (dd, J = 7.1, 1.0 Hz, 1H), 8.00 (s, 157 1H), 7.70 (s, 1H), 7.60 – 7.54 (m, 1H), 6.89 (s, 1H), 6.83 (dd, J = 7.1, 2.0 Hz, 1H), 3.86 (t, J = 8.3 Hz, 2H), 3.43 (dd, J = 8.5, 5.7 Hz, 2H), 2.83 – 2.68 (m, 1H), 2.35 (d, J = 7.6 Hz, 2H), 2.03 (s, 6H), 1.98 – 1.88 (m, 1H), 0.87 – 0.78 (m, 4H). Example 73: 1-[6-cyano-4-[2-(cyclopropanecarbonylamino)pyrazolo[1,5-a]py ridin-5-yl]-3- pyridyl]-N-methyl-azetidine-3-carboxamide. %) was prepared as described in Example 3 where N- methylazetidine-3-carboxamide was used instead of azetidin-3-ylmethanol. MS (ESI): mass calcd. for C ₂₂ H ₂₁ N ₇ O ₂ , 415.2; m/z found, 416.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.11 (s, 1H), 8.59 (d, J = 7.2 Hz, 1H), 8.04 (s, 1H), 7.85 - 7.79 (m, 1H), 7.74 (s, 1H), 7.59 (d, J = 0.8 Hz, 1H), 6.89 (s, 1H), 6.84 (dd, J = 2.0, 7.2 Hz, 1H), 3.96 - 3.86 (m, 2H), 3.83 - 3.71 (m, 2H), 3.32 - 3.27 (m, 1H), 2.52 (d, J = 4.4 Hz, 3H), 1.97 - 1.88 (m, 1H), 0.89 - 0.76 (m, 4H). Example 74: N-[5-[2-cyano-5-[3-(1-hydroxy-1-methyl-ethyl)azetidin-1-yl]- 4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. g, 7%) was prepared as described in Example 3 where 2- (azetidin-3-yl)propan-2-ol hydrochloride was used instead of azetidin-3-ylmethanol. MS (ESI): mass calcd. for C23H24N6O2, 416.2; m/z found, 417.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.12 (s, 1H), 8.58 (d, J = 7.2 Hz, 1H), 8.02 (s, 1H), 7.71 (s, 1H), 7.59 (d, J = 0.8 Hz, 1H), 6.90 158

(s, 1H), 6.84 (dd, J = 2.0, 7.2 Hz, 1H), 4.43 (s, 1H), 3.80 - 3.71 (m, 2H), 3.70 - 3.60 (m, 2H), 2.64 - 2.54 (m, 1H), 1.98 - 1.87 (m, 1H), 0.94 (s, 6H), 0.87 - 0.77 (m, 4H). Example 75: N-[5-[2-cyano-5-[3-hydroxy-3-(trifluoromethyl)azetidin-1-yl] -4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. mg, 13%) was prepared as described in Example 3 where 3- (trifluoromethyl)azetidin-3-ol hydrochloride was used instead of azetidin-3-ylmethanol. MS (ESI): mass calcd. for C ₂₁ H ₁₇ F ₃ N ₆ O ₂ , 442.1; m/z found, 443.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.14 (s, 1H), 8.63 (d, J = 7.2 Hz, 1H), 8.17 (s, 1H), 7.82 (s, 1H), 7.65 - 7.59 (m, 1H), 7.30 (s, 1H), 6.91 (s, 1H), 6.84 (dd, J = 2.0, 7.2 Hz, 1H), 4.03 (d, J = 10.4 Hz, 2H), 3.81 (d, J = 9.6 Hz, 2H), 1.98 - 1.88 (m, 1H), 0.88 - 0.77 (m, 4H). ¹⁹ F NMR (376 MHz, DMSO-d6) δ - 82.65 (s, 3F). Example 76: N-[5-[2-cyano-5-(cyclopropylmethylamino)-4-pyridyl]pyrazolo[ 1,5-a]pyridin-2- yl]cyclopropanecarboxamide. mg, 24%) was prepared as described in Example 3 where cyclopropylmethanamine was used instead of azetidin-3-ylmethanol. MS (ESI): mass calcd. for C21H20N6O, 372.2; m/z found, 373.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.11 (s, 1H), 8.63 (d, J = 7.2 Hz, 1H), 8.25 (s, 1H), 7.66 (d, J = 1.2 Hz, 1H), 7.64 (s, 1H), 6.90 (s, 1H), 6.81 159

(dd, J = 2.0, 7.2 Hz, 1H), 6.26 (t, J = 6.0 Hz, 1H), 3.14 (t, J = 6.4 Hz, 2H), 1.97 - 1.88 (m, 1H), 1.16 - 1.02 (m, 1H), 0.88 - 0.78 (m, 4H), 0.49 - 0.40 (m, 2H), 0.26 - 0.19 (m, 2H). Example 77: N-[5-[2-cyano-5-[(1-methylpyrazol-3-yl)amino]-4-pyridyl]pyra zolo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide. mg, 25%) was prepared as described in Example 3 where 1- methyl-1H-pyrazol-3-amine was used instead of azetidin-3-ylmethanol. MS (ESI): mass calcd. for C21H18N8O, 398.2; m/z found, 399.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.11 (s, 1H), 9.32 (s, 1H), 8.61 (d, J = 7.2 Hz, 1H), 8.39 (s, 1H), 7.79 (s, 1H), 7.72 (s, 1H), 7.57 (d, J = 2.0 Hz, 1H), 6.91 (s, 1H), 6.84 (dd, J = 2.0, 7.2 Hz, 1H), 5.91 (d, J = 2.0 Hz, 1H), 3.78 (s, 3H), 1.98 - 1.88 (m, 1H), 0.88 - 0.78 (m, 4H). Example 78: N-[5-[2-cyano-5-(cyclopentylamino)-4-pyridyl]pyrazolo[1,5-a] pyridin-2- yl]cyclopropanecarboxamide. mg, 21%) was prepared as described in Example 3 where cyclopentanamine was used instead of azetidin-3-ylmethanol. MS (ESI): mass calcd. for C ₂₂ H ₂₂ N ₆ O, 386.2; m/z found, 387.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.10 (s, 1H), 8.59 (d, J = 7.2 Hz, 1H), 8.22 (s, 1H), 7.66 (d, J = 0.8 Hz, 1H), 7.64 (s, 1H), 6.89 (s, 1H), 6.81 160

(dd, J = 2.0, 7.2 Hz, 1H), 5.87 (d, J = 6.8 Hz, 1H), 4.05 - 3.94 (m, 1H), 2.02 - 1.88 (m, 3H), 1.67 - 1.44 (m, 6H), 0.88 - 0.77 (m, 4H). Example 79: N-[5-[2-cyano-5-[(1-methylpyrazol-4-yl)amino]-4-pyridyl]pyra zolo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide. mg, 26%) was prepared as described in Example 3 where 1- methyl-1H-pyrazol-4-amine was used instead of azetidin-3-ylmethanol. MS (ESI): mass calcd. for C21H18N8O, 398.2; m/z found, 399.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ11.09 (s, 1H), 8.61 (d, J = 7.2 Hz, 1H), 8.23 (s, 1H), 7.80 (s, 1H), 7.75 (s, 1H), 7.74 (s, 1H), 7.72 (d, J = 1.2 Hz, 1H), 7.40 (s, 1H), 6.90 (s, 1H), 6.87 (dd, J = 2.0, 7.2 Hz, 1H), 3.81 (s, 3H), 1.99 - 1.87 (m, 1H), 0.87 - 0.75 (m, 4H). Example 80: N-[5-[2-cyano-5-(cyclopropylamino)-4-pyridyl]pyrazolo[1,5-a] pyridin-2- yl]cyclopropanecarboxamide. mg, 26%) was prepared as described in Example 3 where cyclopropanamine was used instead of azetidin-3-ylmethanol. MS (ESI): mass calcd. for C ₂₀ H ₁₈ N ₆ O, 358.2; m/z found, 359.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.11 (s, 1H), 8.58 (d, J = 7.2 Hz, 1H), 8.48 (s, 1H), 7.66 (s, 1H), 7.64 - 7.61 (m, 1H), 6.88 (s, 1H), 6.78 (dd, J 161

= 2.0, 7.2 Hz, 1H), 6.61 (s, 1H), 2.54 - 2.51 (m, 1H), 1.98 - 1.85 (m, 1H), 0.88 - 0.72 (m, 6H), 0.56 - 0.48 (m, 2H). Example 81: N-[5-[2-cyano-5-[(2-hydroxy-2-methyl-propyl)amino]-4-pyridyl ]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. mg, 63%) was prepared as described in Example 3 where 1- amino-2-methylpropan-2-ol was used instead of azetidin-3-ylmethanol. MS (ESI): mass calcd. for C21H22N6O2, 390.2; m/z found, 391.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.12 (s, 1H), 8.66 (d, J = 7.2 Hz, 1H), 8.32 (s, 1H), 7.73 - 7.70 (m, 1H), 7.66 (s, 1H), 6.90 (s, 1H), 6.87 (dd, J = 1.6, 7.2 Hz, 1H), 5.77 (t, J = 6.0 Hz, 1H), 4.64 (s, 1H), 3.18 (d, J = 6.0 Hz, 2H), 1.98 - 1.88 (m, 1H), 1.13 (s, 6H), 0.87 - 0.77 (m, 4H). Example 82: (3-endo)-N-(5-(5-(((1R,3r,5S)-8-azabicyclo[3.2.1]octan-3-yl) oxy)-2-cyanopyridin- 4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. g, 23%) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and (1R,3r,5S)-8-azabicyclo[3.2.1]octan-3-ol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C24H24N6O2, 428.2; m/z found, 429.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.14 (s, 1H), 8.64 (d, J = 7.2 Hz, 1H), 162

8.51 (s, 1H), 8.14 (s, 1H), 7.88 (d, J = 1.2 Hz, 1H), 7.07 (dd, J = 2.0, 7.2 Hz, 1H), 6.92 (s, 1H), 5.06 - 4.99 (m, 1H), 3.29 - 3.26 (m, 2H), 2.06 - 1.97 (m, 2H), 1.96 - 1.90 (m, 1H), 1.86 - 1.82 (m, 1H), 1.82 - 1.77 (m, 1H), 1.56 - 1.49 (m, 2H), 1.43 - 1.32 (m, 2H), 0.87 - 0.79 (m, 4H). Example 83: N-(5-(2-cyano-5-(((1R,3R,5S)-8-methyl-8-azabicyclo[3.2.1]oct an-3- yl)methoxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopro panecarboxamide. mg, 33%) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and ((1R,3r,5S)-8-methyl-8-azabicyclo[3.2.1]octan-3-yl)methanol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C26H28N6O2, 456.2; m/z found, 457.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.13 (s, 1H), 8.66 - 8.59 (m, 2H), 8.18 (s, 1H), 7.94 (d, J = 1.2 Hz, 1H), 7.09 (dd, J = 2.0, 7.2 Hz, 1H), 6.92 (s, 1H), 4.10 (d, J = 6.4 Hz, 2H), 3.09 - 2.99 (m, 2H), 2.14 - 2.04 (m, 4H), 1.98 - 1.87 (m, 3H), 1.51 - 1.39 (m, 6H), 0.88 - 0.78 (m, 4H). Example 84: N-[5-[2-cyano-5-[[(6S)-1,4-oxazepan-6-yl]oxy]-4-pyridyl]pyra zolo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide. 63

The title compound (62 mg, 31%) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and (S)-1,4-oxazepan-6-ol was used instead of (R)-(1- methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C22H22N6O3, 418.2; m/z found, 419.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.14 (s, 1H), 8.64 (s, 1H), 8.62 (d, J = 7.2 Hz, 1H), 8.18 (s, 1H), 7.98 (d, J = 1.2 Hz, 1H), 7.16 (dd, J = 2.0, 7.2 Hz, 1H), 6.92 (s, 1H), 5.11 - 5.02 (m, 1H), 4.04 - 3.98 (m, 1H), 3.93 - 3.86 (m, 1H), 3.74 - 3.67 (m, 1H), 3.57 - 3.50 (m, 1H), 3.30 - 3.23 (m, 1H), 2.92 - 2.86 (m, 1H), 2.85 - 2.73 (m, 2H), 1.98 - 1.89 (m, 1H), 0.86 - 0.79 (m, 4H). Example 85: N-[5-[2-cyano-5-[(1-methyl-4-piperidyl)oxy]-4-pyridyl]pyrazo lo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide. mg, 12%) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and 1-methylpiperidin-4-ol was used instead of (R)-(1- methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C ₂₃ H ₂₄ N ₆ O ₂ , 416.2; m/z found, 417.2 [M+H] ⁺ . ¹ H NMR (400MHz, DMSO-d6) δ 11.16 (s, 1H), 8.72 (s, 1H), 8.63 (d, J = 7.2 Hz, 1H), 8.18 (s, 1H), 7.93 (s, 1H), 7.10 (d, J = 6.8 Hz, 1H), 6.93 (s, 1H), 4.93 - 4.82 (m, 1H), 2.47 - 2.34 (s, 2H), 2.32 - 2.19 (m, 2H), 2.12 (s, 3H), 2.01 - 1.87 (m, 3H), 1.76 - 1.67 (m, 2H), 0.88 - 0.75 (m, 4H). Example 86: N-(5-(2-cyano-5-(((1s,4s)-4-hydroxycyclohexyl)oxy)pyridin-4- yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide. 164

mg, 7.3%) was prepared as described Example 1 where N-(5-(2- cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclo propanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and (cis)-cyclohexane-1,4-diol was used instead of (R)-(1- methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C ₂₃ H ₂₃ N ₅ O ₃ , 417.2; m/z found, 418.2 [M+H] ⁺ . ¹ H NMR (400MHz, DMSO-d ₆ ) δ 11.14 (s, 1H), 8.69 (s, 1H), 8.62 (d, J = 7.2 Hz, 1H), 8.19 (s, 1H), 7.94 (d, J = 0.8 Hz, 1H), 7.12 (dd, J = 2.0, 7.8 Hz, 1H), 6.93 (s, 1H), 4.90 (m, 1H), 4.53 (d, J = 4.4 Hz, 1H), 3.60 - 3.51 (m, 1H), 1.96 - 1.85 (m, 3H), 1.73 - 1.54 (m, 4H), 1.50 - 1.36 (m, 2H), 0.85 - 0.80 (m, 4H). Example 87: (rac-)-N-[5-[2-cyano-5-[3-hydroxy-3-(trifluoromethyl)pyrroli din-1-yl]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. mg, 13%) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and (RS)-3-(trifluoromethyl)pyrrolidin-3-ol hydrochloride was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C22H19F3N6O2, 456.2; m/z found, 457.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.13 (s, 1H), 8.60 (d, J = 7.2 Hz, 1H), 8.36 (s, 1H), 7.78 (s, 1H), 7.61 (d, J = 1.2 Hz, 1H), 6.89 (s, 1H), 6.85 (dd, J = 2.0, 165

6.8 Hz, 1H), 6.49 (s, 1H), 3.52 - 3.43 (m, 2H), 3.40 - 3.36 (m, 1H), 3.12 (d, J = 11.6 Hz, 1H), 2.20 - 2.08 (m, 1H), 2.03 - 1.89 (m, 2H), 0.86 - 0.80 (m, 4H). ¹ H NMR (400 MHz, CD3CN) δ 9.17 (s, 1H), 8.35 (d, J = 7.2 Hz, 1H), 8.25 (s, 1H), 7.59 (s, 1H), 7.46 (d, J = 1.2 Hz, 1H), 6.92 (s, 1H), 6.79 (dd, J = 2.0, 7.2 Hz, 1H), 3.56 (d, J = 11.2 Hz, 1H), 3.53 - 3.46 (m, 1H), 3.37 - 3.28 (m, 1H), 3.14 (d, J = 11.2 Hz, 1H), 2.26 - 2.21 (m, 1H), 2.04 - 1.96 (m, 1H), 1.84 - 1.74 (m, 1H), 0.98 - 0.90 (m, 2H), 0.89 - 0.80 (m, 2H). Example 88: (R)-N-(5-(2-cyano-5-((1-methylpiperidin-3-yl)oxy)pyridin-4-y l)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide. mg, 15%) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and (R)-1-methylpiperidin-3-ol was used instead of (R)-(1- methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C23H24N6O2, 416.2; m/z found, 417.2 [M+H] ⁺ . ¹ H NMR (400MHz, DMSO-d ₆ ) δ 11.15 (s, 1H), 8.73 (s, 1H), 8.61 (d, J = 7.2 Hz, 1H), 8.19 (s, 1H), 8.04 (d, J = 0.8 Hz, 1H), 7.19 (dd, J = 2.0, 7.6 Hz, 1H), 6.91 (s, 1H), 4.96 - 4.86 (m, 1H), 2.73 - 2.64 (m, 1H), 2.43 - 2.32 (m, 2H), 2.30 - 2.22 (m, 1H), 2.17 (s, 3H), 2.00 - 1.84 (m, 2H), 1.78 - 1.67 (m, 1H), 1.60 - 1.44 (m, 2H), 0.89 - 0.78 (m, 4H). Example 89: cis-N-(5-(2-cyano-5-(((1S,4S-4-hydroxy-4-methylcyclohexyl)ox y)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. 166

mg, 18%) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and (cis)-1-methylcyclohexane-1,4-diol was used instead of (R)-(1- methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C ₂₄ H ₂₅ N ₅ O ₃ , 431.2; m/z found, 432.2 [M+H] ⁺ . ¹ H NMR (400MHz, DMSO-d ₆ ) δ 11.13 (s, 1H), 8.70 (s, 1H), 8.62 (d, J = 7.2 Hz, 1H), 8.17 (s, 1H), 7.91 (s, 1H), 7.15 - 7.06 (m, 1H), 6.92 (s, 1H), 4.81 - 4.67 (m, 1H), 4.21 (s, 1H), 2.01 - 1.90 (m, 1H), 1.89 - 1.68 (m, 4H) 1.63 - 1.53 (m, 2H), 1.52 - 1.35 (m, 2H), 1.12 (s, 3H), 0.92 - 0.76 (m, 4H). Example 90: N-[5-[2-cyano-5-(2-methyl-1,3,3a,4,6,6a-hexahydropyrrolo[3,4 -c]pyrrol-5-yl)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. %) was prepared as described in Example 1 where N-(5-(2- cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclo propanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and 2-methyloctahydropyrrolo[3,4-c]pyrrole was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C ₂₄ H ₂₅ N ₇ O, 427.2; m/z found, 428.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.11 (s, 1H), 8.59 (d, J = 7.2 Hz, 1H), 8.33 (s, 1H), 7.78 (s, 1H), 7.73 (d, J = 1.2 Hz, 1H), 6.94 (dd, J = 2.0, 7.2 Hz, 1H), 6.89 (s, 1H), 3.26 - 167

3.19 (m, 2H), 3.01 - 2.94 (m, 2H), 2.75 - 2.65 (m, 2H), 2.43 - 2.37 (m, 2H), 2.31 - 2.26 (m, 2H), 2.20 (s, 3H), 1.98 - 1.90 (m, 1H), 0.86 - 0.79 (m, 4H). Example 91: N-[5-[2-cyano-5-(2-methyl-2,6-diazaspiro[3.3]heptan-6-yl)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. mg, 3.1%) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and 2-methyl-2,6-diazaspiro[3.3]heptane was used instead of (R)- (1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C23H23N7O, 413.2; m/z found, 414.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.13 (s, 1H), 8.57 (d, J = 6.8 Hz, 1H), 8.00 (s, 1H), 7.71 (s, 1H), 7.56 (d, J = 1.2 Hz, 1H), 6.91 (s, 1H), 6.81 (dd, J=1.6, 6.8 Hz, 1H), 3.85 (s, 4H), 3.13 (s, 4H), 2.07 (s, 3H), 1.98 - 1.88 (m, 1H), 0.87 - 0.80 (m, 4H). Example 92: (3-endo)-N-[5-[2-cyano-5-[[(1R,5S)-3-oxa-9-azabicyclo[3.3.1] nonan-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. mg, 60%) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used 168

instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and (1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-ol hydrochloride was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C ₂₄ H ₂₄ N ₆ O ₃ , 444.2; m/z found, 445.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.13 (s, 1H), 8.61 - 8.55 (m, 2H), 8.27 (s, 1H), 8.20 (s, 1H), 7.30 - 7.23 (m, 1H), 6.87 (s, 1H), 5.09 - 4.90 (m, 1H), 3.67 - 3.60 (m, 2H), 3.59 - 3.53 (m, 2H), 2.98 - 2.88 (m, 2H), 2.39 - 2.26 (m, 2H), 2.00 - 1 .87 (m, 1H), 1.85 - 1.72 (m, 2H), 0.93 - 0.74 (m, 4H). Example 93: N-[5-[2-cyano-5-[(2,2,6,6-tetramethyl-4-piperidyl)oxy]-4-pyr idyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. mg, 32%) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and 2,2,6,6-tetramethylpiperidin-4-ol was used instead of (R)-(1- methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C26H30N6O2, 458.2; m/z found, 459.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.14 (s, 1H), 8.71 (s, 1H), 8.61 (d, J = 7.6 Hz, 1H), 8.18 (s, 1H), 7.89 (d, J = 0.8 Hz, 1H), 7.07 (dd, J = 2.0, 7.2 Hz, 1H), 6.93 (s, 1H), 5.32 - 5.17 (m, 1H), 2.10 - 1.99 (m, 2H), 1.98 - 1.89 (m, 1H), 1.26-1.16 (m, 8H), 1.09 (s, 6H), 0.87 - 0.77 (m, 4H). Example 94: N-[5-[2-cyano-5-[(2R)-2-hydroxypropoxy]-4-pyridyl]pyrazolo[1 ,5-a]pyridin-2- yl]cyclopropanecarboxamide. 169

mg, 11%) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and (R)-propane-1,2-diol was used instead of (R)-(1- methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C20H19N5O3, 377.1; m/z found, 378.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.16 (s, 1H), 8.68 (s, 1H), 8.61 (d, J = 7.2 Hz, 1H), 8.19 (s, 1H), 8.02 (d, J = 1.2 Hz, 1H), 7.18 (dd, J = 1.6, 6.8 Hz, 1H), 6.92 (s, 1H), 5.05 (d, J = 5.2 Hz, 1H), 4.19 (d, J = 5.2 Hz, 2H), 4.11 - 3.88 (m, 1H), 2.01 - 1.88 (m, 1H), 1.15 (d, J = 6.4 Hz, 3H), 0.91 - 0.77 (m, 4H). Example 95: N-[5-[2-cyano-5-[[(3S,5R)-5-(trifluoromethyl)-3-piperidyl]ox y]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. mg, 27%) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and (3S,5R)-5-(trifluoromethyl)piperidin-3-ol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C ₂₃ H ₂₁ F ₃ N ₆ O ₂ , 470.2; m/z found, 471.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.13 (s, 1H), 8.81 (s, 1H), 8.60 (d, J = 7.6 Hz, 1H), 8.19 (s, 1H),7.90 (d, J = 1.2 Hz, 1H), 7.08 (dd, J = 2.0, 7.2 Hz, 1H), 6.94 (s, 1H), 4.76 - 4.66 (m, 1H), 3.32 - 3.25 (m, 1H), 3.10 - 3.02 (m, 1H), 2.66 - 2.56 (m, 1H), 2.47 - 2.35 (m, 170

4H), 1.98 - 1.89 (m, 1H), 1.53 - 1.41 (m, 1H), 0.86 - 0.80 (m, 4H). ¹⁹ F NMR (376 MHz, DMSO- d6) δ -70.90 (d, J = 8.6 Hz, 3F). Example 96: N-[5-[2-cyano-5-[(2R)-3,3,3-trifluoro-2-hydroxy-propoxy]-4-p yridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. mg, 11%) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and (R)-3,3,3-trifluoropropane-1,2-diol was used instead of (R)-(1- methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C ₂₀ H ₁₆ F ₃ N ₅ O ₃ , 431.1; m/z found, 432.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.15 (s, 1H), 8.75 (s, 1H), 8.60 (d, J =7.6 Hz, 1H), 8.23 (s, 1H), 8.01 (d, J = 1.2 Hz, 1H), 7.16 (dd, J = 2.0, 7.2 Hz, 1H), 6.93 (s, 1H), 6.81 (d, J = 2.8 Hz, 1H), 4.64 - 4.33 (m, 3H), 1.98 - 1.86 (m, 1H), 0.91 - 0.75 (m, 4H). ¹⁹ F NMR (376 MHz, DMSO-d ₆ ) δ -75.84 (d, J = 7.1 Hz, 3F). Example 97: N-[5-[2-cyano-5-[(2S)-3,3,3-trifluoro-2-hydroxy-propoxy]-4-p yridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 71

The title compound (34 mg, 8%) was prepared as described in Example 1 where N-(5-(2- cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclo propanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and (S)-3,3,3-trifluoropropane-1,2-diol was used instead of (R)-(1- methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C20H16F3N5O3, 431.1; m/z found, 432.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.14 (s, 1H), 8.74 (s, 1H), 8.59 (d, J = 6.8 Hz, 1H), 8.22 (s, 1H), 8.01 (s, 1H), 7.20 - 7.10 (m, 1H), 6.93 (s, 1H), 6.82 (br s., 1H), 4.62 - 4.41 (m, 3H), 2.06 - 1.86 (m, 1H), 0.98 - 0.68 (m, 4H). ¹⁹ F NMR (376 MHz, DMSO-d6) δ -75.83 (d, J = 6.8 Hz, 3F). Example 98: N-(5-(2-cyano-5-(((1s,3s)-3-(methylamino)cyclobutyl)methoxy) pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. 16%) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and ((cis)-3-(methylamino)cyclobutyl)methanol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C23H24N6O2, 416.2; m/z found, 417.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.15 (s, 1H), 8.66 - 8.60 (m, 2H), 8.18 (s, 1H), 7.93 (d, J = 1.2 Hz, 1H), 7.10 (dd, J = 2.0, 7.2 Hz, 1H), 6.92 (s, 1H), 4.25 (d, J = 6.4 Hz, 2H), 3.02 - 2.92 (m, 1H), 2.40 - 2.29 (m, 1H), 2.27 - 2.18 (m, 2H), 2.11 (s, 3H), 1.98 - 1.89 (m, 1H), 1.57 - 1.45 (m, 2H), 0.89 - 0.76 (m, 4H). Example 99: N-[5-[2-cyano-5-[3,3,3-trifluoro-2-hydroxy-2-(trifluoromethy l)propoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 172

mg, 6.7%) was prepared as described in Example 1 where N-(5- (2-cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and 3,3,3-trifluoro-2-(trifluoromethyl)propane-1,2-diol was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C21H15F6N5O3, 499.1; m/z found, 500.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.16 (s, 1H), 8.82 (s, 1H), 8.62 (d, J = 7.2 Hz, 1H), 8.59 (s, 1H), 8.24 (s, 1H), 7.92 (d, J = 0.8 Hz, 1H), 7.08 (dd, J = 2.0, 7.6 Hz, 1H), 6.89 (s, 1H), 4.81 (s, 2H), 1.99 - 1.90 (m, 1H), 0.87 - 0.79 (m, 4H). ¹⁹ F NMR (376 MHz, DMSO-d6) δ -74.49 (s, 6F). Example 100: N-[5-[5-cyano-2-[[(3R)-1-methylpyrrolidin-3-yl]methoxy]pheny l]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. The title compound (83.3 mg, 32%) was prepared as described in Example 1 where N-(5- (5-cyano-2-fluorophenyl)pyrazolo[1,5-a]pyridin-2-yl)cyclopro panecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide. MS (ESI): mass calcd. for C24H25N5O2, 415.2; m/z found, 416.2 [M+H] ⁺ . ¹ H NMR (400 MHz, MeOH-d4) δ 8.37 (d, J = 7.2 Hz, 1H), 7.76 – 7.68 (m, 2H), 7.65 – 7.57 (m, 1H), 7.22 (d, J = 8.4 Hz, 1H), 6.93 (dd, J = 7.2, 2.0 Hz, 1H), 6.86 (s, 1H), 4.15 – 3.97 173

(m, 2H), 2.76 – 2.53 (m, 3H), 2.49 – 2.39 (m, 1H), 2.37 – 2.31 (m, 1H), 2.29 (s, 3H), 2.07 – 1.95 (m, 1H), 1.92 – 1.81 (m, 1H), 1.68 – 1.54 (m, 1H), 1.03 – 0.96 (m, 2H), 0.93 – 0.85 (m, 2H). Example 101: N-[5-[5-cyano-2-[[(2R)-morpholin-2-yl]methoxy]phenyl]pyrazol o[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide. (529 mg, 81%) was prepared as described in Example 1 where N-(5- (5-cyano-2-fluorophenyl)pyrazolo[1,5-a]pyridin-2-yl)cyclopro panecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and [(2R)-morpholin-2-yl]methanol was used instead of (R)-(1- methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C ₂₃ H ₂₃ N ₅ O ₃ , 417.2; m/z found, 418.2 [M+H] ⁺ . ¹ H NMR (500 MHz, MeOH-d4) δ 8.41 – 8.35 (m, 1H), 7.78 (d, J = 2.1 Hz, 1H), 7.76 – 7.71 (m, 2H), 7.24 (d, J = 8.6 Hz, 1H), 7.01 (dd, J = 7.3, 2.0 Hz, 1H), 6.87 (s, 1H), 4.15 – 4.11 (m, 2H), 3.91 – 3.86 (m, 1H), 3.84 – 3.77 (m, 1H), 3.68 – 3.56 (m, 1H), 2.87 (dd, J = 12.5, 2.5 Hz, 1H), 2.80 – 2.73 (m, 2H), 2.70 – 2.63 (m, 1H), 1.90 – 1.81 (m, 1H), 1.04 – 0.96 (m, 2H), 0.93 – 0.86 (m, 2H). Example 102: N-[5-[5-cyano-2-[[(2R)-6,6-dimethylmorpholin-2- yl]methoxy]phenyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropaneca rboxamide. , 96%) was prepared as described in Example 1 where N-(5- (5-cyano-2-fluorophenyl)pyrazolo[1,5-a]pyridin-2-yl)cyclopro panecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and (R)-(6,6-dimethylmorpholin-2-yl)methanol was used instead of 174

(R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C25H27N5O3, 445.2; m/z found, 446.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.06 (s, 1H), 8.53 (dd, J = 7.3, 1.0 Hz, 1H), 7.93 (d, J = 2.1 Hz, 1H), 7.88 – 7.81 (m, 2H), 7.30 (d, J = 8.7 Hz, 1H), 7.09 (dd, J = 7.3, 2.0 Hz, 1H), 6.87 (s, 1H), 4.06 – 4.02 (m, 2H), 3.96 – 3.88 (m, 1H), 2.81 – 2.74 (m, 1H), 2.55 (d, J = 12.2 Hz, 1H), 2.42 – 2.29 (m, 2H), 1.97 – 1.88 (m, 1H), 1.23 (s, 3H), 1.09 (s, 3H), 0.87 – 0.76 (m, 4H). Example 103: N-[5-[5-cyano-2-[[(2S)-morpholin-2-yl]methoxy]phenyl]pyrazol o[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide. mg, 76%) was prepared as described in Example 1 where N-(5- (5-cyano-2-fluorophenyl)pyrazolo[1,5-a]pyridin-2-yl)cyclopro panecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and [(2S)-morpholin-2-yl]methanol was used instead of (R)-(1- methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C23H23N5O3, 417.2; m/z found, 418.2 [M+H] ⁺ . ¹ H NMR (400 MHz, MeOH-d4) δ 8.42 – 8.34 (m, 1H), 7.78 (d, J = 2.1 Hz, 1H), 7.75 – 7.68 (m, 2H), 7.24 (d, J = 8.6 Hz, 1H), 7.01 (dd, J = 7.3, 2.0 Hz, 1H), 6.87 (s, 1H), 4.15 – 4.11 (m, 2H), 3.93 – 3.85 (m, 1H), 3.84 – 3.75 (m, 1H), 3.67 – 3.55 (m, 1H), 2.87 (dd, J = 12.5, 2.5 Hz, 1H), 2.80 – 2.72 (m, 2H), 2.71 – 2.62 (m, 1H), 1.92 – 1.84 (m, 1H), 1.04 – 0.96 (m, 2H), 0.93 – 0.84 (m, 2H). Example 104: N-[5-[5-cyano-2-[[(2S)-6,6-dimethylmorpholin-2- yl]methoxy]phenyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropaneca rboxamide. 175

mg, 31%) was prepared as described in Example 1 where N-(5- (5-cyano-2-fluorophenyl)pyrazolo[1,5-a]pyridin-2-yl)cyclopro panecarboxamide was used instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and (S)-(6,6-dimethylmorpholin-2-yl)methanol HCL was used instead of (R)-(1-methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C25H27N5O3, 445.2; m/z found, 446.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 11.07 (s, 1H), 8.57 – 8.51 (m, 1H), 7.93 (d, J = 2.1 Hz, 1H), 7.87 – 7.82 (m, 2H), 7.30 (d, J = 8.7 Hz, 1H), 7.08 (dd, J = 7.3, 2.0 Hz, 1H), 6.88 (s, 1H), 4.11 – 4.02 (m, 2H), 3.99 – 3.91 (m, 1H), 2.88 – 2.81 (m, 1H), 2.64 (d, J = 12.3 Hz, 1H), 2.46 – 2.35 (m, 2H), 1.97 – 1.90 (m, 1H), 1.24 (s, 3H), 1.11 (s, 3H), 0.88 – 0.79 (m, 4H). Example 105: 5-[[(3R)-1-methylpyrrolidin-3-yl]methoxy]-4-[2-(4-pyridylami no)pyrazolo[1,5- a]pyridin-5-yl]pyridine-2-carbonitrile. mg, 26%) was prepared as described in Example 4 where 4- chloropyridine was used instead of 3-bromopyridine. MS (ESI): mass calcd. for C ₂₄ H ₂₃ N ₇ O, 425.2; m/z found, 426.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 9.67 (s, 1H), 8.70 - 8.64 (m, 2H), 8.30 (d, J = 6.4 Hz, 2H), 8.19 (s, 1H), 7.86 (s, 1H), 7.47 (d, J = 6.4 Hz, 2H), 7.04 (dd, J = 1.6, 7.2 Hz, 1H), 6.27 (s, 1H), 4.27 - 4.17 (m, 2H), 2.58 - 2.53 (m, 2H), 2.41 (m, 2H), 2.36 - 2.27 (m, 1H), 2.21 (s, 3H), 1.97 - 1.85 (m, 1H), 1.59 - 1.49 (m, 1H). 176

Example 106: 4-(2-anilinopyrazolo[1,5-a]pyridin-5-yl)-5-[[(3R)-1-methylpy rrolidin-3- yl]methoxy]pyridine-2-carbonitrile. 0 mg, 90%) was prepared as described in Example 4 where bromobenzene was used instead of 3-bromopyridine. MS (ESI): mass calcd. for C25H24N6O, 424.2; m/z found, 425.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.01 (s, 1H), 8.66 (s, 1H), 8.60 (d, J = 7.2 Hz, 1H), 8.17 (s, 1H), 7.81 - 7.76 (m, 1H), 7.53 (d, J = 8.0 Hz, 2H), 7.31 - 7.23 (m, 2H), 6.96 (dd, J = 1.6, 7.2 Hz, 1H), 6.86 - 6.79 (m, 1H), 6.16 (s, 1H), 4.26 - 4.16 (m, 2H), 2.61 - 2.54 (m, 2H), 2.44 - 2.38 (m, 2H), 2.36 - 2.28 (m, 1H), 2.22 (s, 3H), 1.98 - 1.86 (m, 1H), 1.59 - 1.49 (m, 1H). Example 107: 5-[[(3R)-1-methylpyrrolidin-3-yl]methoxy]-4-[2-(2-pyridylami no)pyrazolo[1,5- a]pyridin-5-yl]pyridine-2-carbonitrile. 9 mg, 48%) was prepared as described in Example 4 where 2- bromopyridine was used instead of 3-bromopyridine. MS (ESI): mass calcd. for C ₂₄ H ₂₃ N ₇ O, 425.2; m/z found, 426.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.85 (s, 1H), 8.68 (s, 1H), 8.61 (d, J = 6.8 Hz, 1H), 8.23 (d, J = 3.6 Hz, 1H), 8.20 (s, 1H), 7.86 (s, 1H), 7.67 - 7.59 (m, 1H), 7.32 (d, J = 8.4 Hz, 1H), 7.01 (dd, J = 1.6, 7.2 Hz, 1H), 6.94 (s, 1H), 6.86 - 6.75 (m, 1H), 4.44 - 4.28 (m, 2H), 3.55 - 3.36 (m, 3H), 3.19 - 3.05 (m, 1H), 2.96 - 2.86 (m, 1H), 2.81 (s, 3H), 2.22 - 2.10 (m, 1H), 1.90 - 1.77 (m, 1H). 177

Example 108: (S)-N-[5-[2-cyano-5-[(3S)-1-(2-methoxyethyl)pyrrolidin-3-yl] oxy-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. nd (10 mg, 18%) was prepared as described in Example 5 where 1- bromo-2-methoxyethane was used instead of 2,2,2-trifluoroethyl trifluoromethanesulfonate. MS (ESI): mass calcd. for C ₂₄ H ₂₆ N ₆ O ₃ , 446.2; m/z found, 447.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.14 (s, 1H), 8.63 - 8.58 (m, 2H), 8.19 (s, 1H), 7.96 (s, 1H), 7.13 (dd, J = 1.6, 7.2 Hz, 1H), 6.93 (s, 1H), 5.31 - 5.23 (m, 1H), 3.44 - 3.40 (m, 2H), 3.21 (s, 3H), 3.00 - 2.87 (m, 1H), 2.87 - 2.75 (m, 2H), 2.69 - 2.58 (m, 2H), 2.48 - 2.42 (m, 1H), 2.42 - 2.28 (m, 1H), 1.99 - 1.90 (m, 1H), 1.89 - 1.79 (m, 1H), 0.86 - 0.80 (m, 4H). Example 109: (S)-N-[5-[2-cyano-5-[(3S)-1-(2-pyridylmethyl)pyrrolidin-3-yl ]oxy-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. (22.5 mg, 35%) was prepared as described in Example 5 where 2- (bromomethyl)pyridine hydrobromide was used instead of 2,2,2-trifluoroethyl trifluoromethanesulfonate. MS (ESI): mass calcd. for C27H25N7O2, 479.2; m/z found, 480.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.16 (s, 1H), 8.64 - 8.59 (m, 2H), 8.47 (d, J = 4.4 Hz, 1H), 8.20 (s, 1H), 7.97 - 7.94 (m, 1H), 7.74 - 7.67 (m, 1H), 7.38 (d, J = 8.0 Hz, 1H), 7.25 - 7.20 (m, 1H), 7.14 (dd, J = 1.6, 7.2 Hz, 1H), 6.94 (s, 1H), 5.33 - 5.27 (m, 1H), 3.80 - 3.67 (m, 178

2H), 2.93 - 2.79 (m, 3H), 2.49 - 2.46 (m, 1H), 2.45 - 2.35 (m, 1H), 1.99 - 1.92 (m, 1H), 1.92 - 1.82 (m, 1H), 0.87 - 0.81 (m, 4H). Example 110: (R)-N-[5-[2-cyano-5-[(3R)-1-(2,2,2-trifluoroethyl)pyrrolidin -3-yl]oxy-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 5 mg, 53%) was prepared as described in Example 5, using (R)- pyrrolidin-3-ol in place of (S)-pyrrolidin-3-ol. MS (ESI): mass calcd. for C ₂₃ H ₂₁ F ₃ N ₆ O ₂ , 470.2; m/z found, 471.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.13 (s, 1H), 8.63 (s, 1H), 8.58 (d, J = 7.6 Hz, 1H), 8.20 (s, 1H), 7.97 - 7.94 (m, 1H), 7.13 (dd, J = 2.0, 7.6 Hz, 1H), 6.92 (s, 1H), 5.35 - 5.29 (m, 1H), 3.33 - 3.24 (m, 2H), 3.17 - 3.10 (m, 1H), 2.98 - 2.90 (m, 2H), 2.75 - 2.68 (m, 1H), 2.40 - 2.29 (m, 1H), 1.98 - 1.85 (m, 2H), 0.86 - 0.79 (m, 4H). ¹⁹ F NMR (376 MHz, DMSO- d6) δ -68.88 (t, J = 10.5 Hz, 3F). Example 111: (R)-N-[5-[2-cyano-5-[(3R)-1-(2-methoxyethyl)pyrrolidin-3-yl] oxy-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. mg, 49%) was prepared as described in Example 5 where 1- bromo-2-methoxyethane was used instead of (2,2,2-trifluoroethyl trifluoromethanesulfonate. MS (ESI): mass calcd. for C ₂₄ H ₂₆ N ₆ O ₃ , 446.2; m/z found, 447.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.13 (s, 1H), 8.64 - 8.58 (m, 2H), 8.19 (s, 1H), 7.95 (d, J = 0.8 Hz, 1H), 7.13 (dd, 179

J = 1.6, 7.2 Hz, 1H), 6.93 (s, 1H), 5.30 - 5.23 (m, 1H), 3.41 (t, J = 6.0 Hz, 2H), 3.21 (s, 3H), 2.96 - 2.86 (m, 1H), 2.83 - 2.73 (m, 2H), 2.64 - 2.56 (m, 2H), 2.48 - 2.41 (m, 1H), 2.39 - 2.27 (m, 1H), 1.99 - 1.89 (m, 1H), 1.87 - 1.77 (m, 1H), 0.86 - 0.79 (m, 4H). Example 112: (R)-N-[5-[2-cyano-5-[(3R)-1-(2-pyridylmethyl)pyrrolidin-3-yl ]oxy-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 8 mg, 38%) was prepared as described in Example 5 where 2- (bromomethyl)pyridine hydrobromide was used instead of (2,2,2-trifluoroethyl trifluoromethanesulfonate. MS (ESI): mass calcd. for C ₂₇ H ₂₅ N ₇ O ₂ , 479.2; m/z found, 480.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.16 (s, 1H), 8.64 - 8.59 (m, 2H), 8.47 (d, J = 4.0 Hz, 1H), 8.20 (s, 1H), 7.97 - 7.94 (m, 1H), 7.74 - 7.68 (m, 1H), 7.38 (d, J = 7.6 Hz, 1H), 7.26 - 7.20 (m, 1H), 7.14 (dd, J = 2.0, 7.6 Hz, 1H), 6.94 (s, 1H), 5.33 - 5.27 (m, 1H), 3.80 - 3.67 (m, 2H), 2.92 - 2.80 (m, 3H), 2.49 - 2.35 (m, 2H), 1.99 - 1.92 (m, 1H), 1.92 - 1.82 (m, 1H), 0.88 - 0.80 (m, 4H). Example 113: (R)-N-[5-[2-cyano-5-[(3R)-1-(cyanomethyl)pyrrolidin-3-yl]oxy -4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 0

The title compound (32 mg, 54%) was prepared as described in Example 5 where 2- bromoacetonitrile was used instead of (2,2,2-trifluoroethyl trifluoromethanesulfonate. MS (ESI): mass calcd. for C ₂₃ H ₂₁ N ₇ O ₂ , 427.2; m/z found, 428.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.14 (s, 1H), 8.61 (s, 1H), 8.58 (d, J = 7.2 Hz, 1H), 8.18 (s, 1H), 7.92 (d, J = 0.8 Hz, 1H), 7.11 (dd, J = 2.0, 7.2 Hz, 1H), 6.92 (s, 1H), 5.36 - 5.30 (m, 1H), 3.86 (s, 2H), 3.05 - 2.97 (m, 1H), 2.87 - 2.79 (m, 2H), 2.60 - 2.53 (m, 1H), 2.46 - 2.35 (m, 1H), 1.97 - 1.85 (m, 2H), 0.86 - 0.79 (m, 4H). Example 114: (S)-N-[5-[2-cyano-5-[(3S)-1-(cyanomethyl)pyrrolidin-3-yl]oxy -4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. mg, 38%) was prepared as described in Example 5 where 2- bromoacetonitrile was used instead of (2,2,2-trifluoroethyl trifluoromethanesulfonate. MS (ESI): mass calcd. for C23H21N7O2, 427.2; m/z found, 428.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.14 (s, 1H), 8.62 (s, 1H), 8.59 (d, J = 7.2 Hz, 1H), 8.20 (s, 1H), 7.93 (d, J = 1.2 Hz, 1H), 7.11 (dd, J = 2.0, 7.6 Hz, 1H), 6.93 (s, 1H), 5.37 - 5.30 (m, 1H), 3.87 (s, 2H), 3.05 - 2.98 (m, 1H), 2.87 - 2.81 (m, 2H), 2.60 - 2.54 (m, 1H), 2.46 - 2.38 (m, 1H), 1.98 - 1.88 (m, 2H), 0.86 - 0.78 (m, 4H). Example 115: N-(5-(2-methyl-5-((1-methylazetidin-3-yl)oxy)pyridin-4-yl)py razolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide. 181

sting of 1-methylazetidin-3-ol (7.87 g, 90.3 mmol) and DMA (125 mL) was treated with sodium hydride, 60% dispersion in mineral oil (4.66 g, 117 mmol) and stirred for 2 min at rt.5-(5-fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2 -amine (Intermediate 6, 10.4 g, 42.7 mmol) was added as a solution in DMA (50 mL) and the mixture placed on a pre-heated block at 90 ˚C for 90 min. The reaction mixture was cooled to room temperature and treated with water (500 mL). The resulting precipitate was collected by filtration, dried under vacuum, and purified by flash column chromatography (SiO2, 50-100% EtOAc/hexanes. Fractions containing product were combined and concentrated to give the title compound (9.8 g, 74%) as a yellow foam. MS (ESI): mass calcd. for C ₂₁ H ₂₃ N ₅ O ₂ , 377.19; m/z found, 310.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.08 (s, 1H), 8.64 - 8.49 (m, 1H), 8.06 (s, 1H), 7.88 - 7.75 (m, 1H), 7.37 (s, 1H), 7.06 (dd, J = 7.2, 2.0 Hz, 1H), 6.90 (s, 1H), 4.97 - 4.80 (m, 1H), 3.82 - 3.62 (m, 2H), 3.06 - 2.87 (m, 2H), 2.45 (s, 3H), 2.27 (s, 3H), 1.98 - 1.90 (m, 1H), 0.88 - 0.76 (m, 4H). Example 116: N-(1-(difluoromethyl)-1H-pyrazol-4-yl)-5-(2-methyl-5-(((1R,5 S,7s)-9-methyl-3- oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)pyridin-4-yl)pyrazolo[ 1,5-a]pyridin-2-amine. H-pyrazol-4-yl)-5-(2-methyl-5-(((1R,5S,7s)-9-methyl-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl)oxy)pyridin-4-yl)pyrazolo[1,5-a] pyridin-2-amine is prepared by a three step process. In a first step, step A as shown below provided tert-butyl (1R,5S,7s)-7-((4-(2- ((1-(difluoromethyl)-1H-pyrazol-4-yl)amino)pyrazolo[1,5-a]py ridin-5-yl)-6-methylpyridin-3- 182

yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonane-9-carboxylate. tert-butyl (1R,5S,7s)-7-((4-(2-((1- (difluoromethyl)-1H-pyrazol-4-yl)amino)pyrazolo[1,5-a]pyridi n-5-yl)-6-methylpyridin-3- yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonane-9-carboxylate is then subjected to the conditions described in Example 117 , steps B and C as the second and third steps to provide N-(1- (difluoromethyl)-1H-pyrazol-4-yl)-5-(2-methyl-5-(((1R,5S,7s) -9-methyl-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl)oxy)pyridin-4-yl)pyrazolo[1,5-a] pyridin-2-amine. Step A: tert-butyl (1R,5S,7s)-7-((4-(2-((1-(difluoromethyl)-1H-pyrazol-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)o xy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate. To a vial containing tert-butyl (1R,5S,7s)-7-((4-(2- aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)- 3-oxa-9-azabicyclo[3.3.1]nonane- 9-carboxylate ( Intermediate 9, 140 mg, 0.301 mmol), 4-bromo-1-(difluoromethyl)-1H-pyrazole (88.9 mg, 0.451 mmol), tert-BuBrettPhos-Pd-G3, [(2-Di-tert-butylphosphino-3,6-dimethoxy-2′,4′,6′-trii sopropyl- 1,1′-biphenyl)-2-(2′-amino-1,1′-biphenyl)]palladium(II ) methanesulfonate (25.7 mg, 0.030 mmol, 10 mol%), and cesium carbonate (367 mg, 1.13 mmol) was added 1,4-dioxane (3.0 mL, 1M) via syringe under N ₂ atmosphere. The reaction mixture was evacuated with sonication for 2 minutes then vented to Argon. The resulting vial was heated in a microwave reactor at 120 °C for 1 hour. The reaction mixture was filtered through diatomaceous earth and concentrated in vacuo. The residue was purified by flash column chromatography (10-100% EtOAc in hexanes) and the fractions containing product were combined and concentrated to afford the title compound (130 mg, 74%) as a beige foam. MS (ESI): mass calcd. for C29H33N7O4F2, 581.6; m/z found, 582.3 [M+H] ⁺ . Example 117: 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 - methylpyridin-4-yl)-N-(1-(difluoromethyl)-1H-pyrazol-4-yl)py razolo[1,5-a]pyridin-2-amine. 183

5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4-yl)-N-(1- (difluoromethyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-2-am ine . Step B,: To a vial containing tert-butyl (1R,5S,7s)-7-((4-(2-((1-(difluoromethyl)-1H- pyrazol-4-yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyri din-3-yl)oxy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate (130 mg, 0.224 mmol) was added trifluoracetic acid (0.77 mL, 10.1 mmol) at 23 °C and after 10 minutes the solvent was removed in vacuo. The residue was diluted with dichloromethane (6 mL) followed by saturated aq. K2CO3 (3 mL). The layers separated and the aqueous was extracted with dichloromethane (3 x 2 mL). The combined organics were dried with MgSO ₄ , filtered and concentrated in vacuo to give the title compound (90 mg, 83%) as a white solid. MS (ESI): mass calcd. for C ₂₄ H ₂₅ N ₇ O ₂ F ₂ , 481.5; m/z found, 482.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 8.90 (s, 1H), 8.52 - 8.48 (m, 1H), 8.28 (s, 1H), 8.24 (d, J = 0.7 Hz, 1H), 7.87 - 7.84 (m, 1H), 7.76 - 7.72 (m, 2H), 7.35 (s, 1H), 6.99 (dd, J = 7.2, 2.0 Hz, 1H), 5.97 (s, 1H), 4.68 - 4.60 (m, 1H), 3.56 (dd, J = 10.6, 2.3 Hz, 2H), 3.50 (d, J = 10.6 Hz, 2H), 2.92 (d, J = 8.6 Hz, 2H), 2.45 (s, 3H), 2.32 - 2.24 (m, 2H), 1.68 - 1.60 (m, 2H). Step C: N-(1-(difluoromethyl)-1H-pyrazol-4-yl)-5-(2-methyl-5-(((1R,5 S,7s)-9-methyl-3- oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)pyridin-4-yl)pyrazolo[ 1,5-a]pyridin-2-amine. To a solution of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4-yl)- N-(1-(difluoromethyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin -2-amine (crude, 0.224 mmol) in MeOH (4.7 mL, 0.04 M) was added H(CHO) _n (25.3 mg, 0.28 mmol) followed by NaCNBH ₃ (35.2 mg, 0.581 mmol) at 23 °C. After 1h, saturated aq. NaHCO ₃ (2.5 mL) and water (2.5 mL) was added followed by EtOAc (10 mL). The layers were separated and the aqueous was extracted with EtOAc (3 x 10 mL) and the combined organics were concentrated in vacuo. The reaction mixture was purified by preparative HPLC using a Waters Xbridge Prep OBD C1850 x 100 mm x 5 μm column (eluent: 10% to 100% (v/v) CH3CN and H2O with 20 mM NH4HCO3) to 184

afford pure product. The product was suspended in water/MeCN (1:1, 10 mL), the mixture frozen using dry ice/acetone, and then lyophilized to dryness to afford N-(1-(difluoromethyl)- 1H-pyrazol-4-yl)-5-(2-methyl-5-(((1R,5S,7s)-9-methyl-3-oxa-9 -azabicyclo[3.3.1]nonan-7- yl)oxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2-amine (25 mg, 27%) as a white solid. MS (ESI): mass calcd. for C25H27N7O2F2, 496.2; m/z found, 495.22 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO- d6) δ 8.88 (s, 1H), 8.48 (dt, J = 7.3, 0.9 Hz, 1H), 8.24 (d, J = 0.7 Hz, 1H), 8.18 (s, 1H), 8.03 (dd, J = 2.0, 0.9 Hz, 1H), 7.75 - 7.72 (m, 2H), 7.37 (s, 1H), 7.08 (dd, J = 7.3, 2.0 Hz, 1H), 5.93 (s, 1H), 4.71 - 4.63 (m, 1H), 3.79 (dd, J = 10.8, 2.5 Hz, 2H), 3.53 - 3.45 (m, 2H), 2.63 (d, J = 7.0 Hz, 2H), 2.45 (s, 3H), 2.43 - 2.34 (m, 5H), 1.67 - 1.59 (m, 2H). Example 118: N-(4-fluoro-1-methyl-1H-pyrazol-3-yl)-5-(2-methyl-5-(((1R,5S ,7s)-9-methyl-3- oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)pyridin-4-yl)pyrazolo[ 1,5-a]pyridin-2-amine. s prepared using the reductive amination method analogous to that described in Example 164, and using Example 399 instead of N-(5-(5-(((1S,4S,7R)-2-oxa-5- azabicyclo[2.2.1]heptan-7-yl)oxy)-2-methylpyridin-4-yl)pyraz olo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide. MS (ESI): mass calcd. for C ₂₅ H ₂₈ FN ₇ O ₂ , 477.2; m/z found, 478.3 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 8.75 (s, 1H), 8.38 (dd, J = 7.2, 0.9 Hz, 1H), 8.18 (s, 1H), 8.02 (dd, J = 2.0, 0.9 Hz, 1H), 7.75 (d, J = 4.6 Hz, 1H), 7.36 (s, 1H), 7.09 (dd, J = 7.2, 2.1 Hz, 1H), 6.26 (d, J = 0.8 Hz, 1H), 4.70 – 4.62 (m, 1H), 3.78 (dd, J = 10.8, 2.4 Hz, 2H), 3.70 (s, 3H), 3.48 (d, J = 10.7 Hz, 2H), 2.65 – 2.60 (m, 2H), 2.44 (s, 3H), 2.39 (s, 3H), 2.38 – 2.32 (m, 1H), 1.68 – 1.58 (m, 2H). Example 119: N-(3-fluoro-1-methyl-1H-pyrazol-4-yl)-5-(2-methyl-5-(((1R,5S ,7s)-9-methyl-3- oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)pyridin-4-yl)pyrazolo[ 1,5-a]pyridin-2-amine. 185

.8 mg, 15%) was prepared as described in Example 116 steps A-C where ((4-bromo-3-fluoro-1-methyl-1H-pyrazole)) was used instead of 4-bromo-1- (difluoromethyl)-1H-pyrazole in step A. MS (ESI): mass calcd. for C ₂₅ H ₂₈ FN ₇ O ₂ , 477.2; m/z found, 478.3 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 8.38 (d, J = 7.2 Hz, 1H), 8.18 (s, 1H), 8.06 (s, 1H), 8.00 (dd, J = 2.1, 0.9 Hz, 1H), 7.36 (s, 1H), 7.04 (dd, J = 7.2, 2.0 Hz, 1H), 5.80 (d, J = 0.9 Hz, 1H), 4.70 – 4.62 (m, 2H), 3.79 (d, J = 11.2 Hz, 2H), 3.72 (s, 3H), 3.49 (d, J = 10.6 Hz, 2H), 2.65 – 2.60 (m, 3H), 2.45 (s, 3H), 2.40 (s, 3H), 2.38 – 2.35 (m, 1H), 1.63 (d, J = 15.1 Hz, 2H). Example 120: N-(5-fluoro-1-methyl-1H-pyrazol-3-yl)-5-(2-methyl-5-(((1R,5S ,7s)-9-methyl-3- oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)pyridin-4-yl)pyrazolo[ 1,5-a]pyridin-2-amine. .1 mg, 11%) was prepared as described in Example 116 steps A-C where ((3-bromo-5-fluoro-1-methyl-1H-pyrazole)) was used instead of 4-bromo-1- (difluoromethyl)-1H-pyrazole in step A. MS (ESI): mass calcd. for C ₂₅ H ₂₈ FN ₇ O ₂ , 477.2; m/z found, 478.3 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 9.16 (s, 1H), 8.41 (dt, J = 7.1, 0.9 Hz, 1H), 8.18 (s, 1H), 8.04 (dd, J = 2.0, 0.9 Hz, 1H), 7.36 (s, 1H), 7.10 (dd, J = 7.2, 2.0 Hz, 1H), 6.32 (d, J = 0.9 Hz, 1H), 5.83 (d, J = 5.5 Hz, 1H), 4.70 – 4.61 (m, 1H), 3.79 (dd, J = 10.8, 2.5 Hz, 2H), 3.58 (d, J = 1.0 Hz, 3H), 3.52 – 3.46 (m, 2H), 2.66 – 2.59 (m, 2H), 2.45 (s, 3H), 2.43 – 2.34 (m, 5H), 1.63 (d, J = 14.9 Hz, 2H). 186

Example 121: 1-(4-((5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl )oxy)-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-1H-pyr azol-1-yl)-2-methylpropan-2-ol. (18.7 mg, 15%) was prepared as described in Example 116 steps A-B where (1-(4-bromo-1H-pyrazol-1-yl)-2-methylpropan-2-ol)) was used instead of 4-bromo-1- (difluoromethyl)-1H-pyrazole in step A. MS (ESI): mass calcd. for C ₂₇ H ₃₃ N ₇ O ₃ , 503.3; m/z found, 504.3 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 8.43 – 8.37 (m, 2H), 8.27 (s, 1H), 7.80 (dd, J = 2.0, 0.9 Hz, 1H), 7.76 (d, J = 0.8 Hz, 1H), 7.40 (d, J = 0.8 Hz, 1H), 7.34 (s, 1H), 6.94 (dd, J = 7.2, 2.0 Hz, 1H), 5.88 (d, J = 0.9 Hz, 1H), 4.67 (s, 1H), 4.63 (p, J = 6.5 Hz, 1H), 3.96 (s, 2H), 3.55 (dd, J = 10.6, 2.4 Hz, 2H), 3.52 – 3.47 (m, 2H), 2.92 (d, J = 8.6 Hz, 2H), 2.45 (s, 3H), 2.28 (dt, J = 14.3, 7.5 Hz, 2H), 1.64 (ddd, J = 13.7, 6.7, 2.6 Hz, 2H), 1.07 (s, 6H). Example 122: 1-(4-((5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl )oxy)-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-1-(2-h ydroxy-2-methylpropyl)-1H- pyrazol-3-yl)-2,2,2-trifluoroethan-1-one. g, 11%) was isolated as an impurity in step B during the synthesis of Example 121. MS (ESI): mass calcd. for C29H32F3N7O4, 599.2; m/z found, 600.3 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 9.37 (s, 1H), 8.91 (dd, J = 7.0, 0.8 Hz, 1H), 8.43 (s, 187

1H), 8.08 (d, J = 0.7 Hz, 1H), 8.01 – 7.95 (m, 1H), 7.80 (d, J = 0.7 Hz, 1H), 7.58 (dd, J = 7.0, 1.9 Hz, 1H), 7.36 (s, 1H), 4.78 (h, J = 7.1, 6.6 Hz, 1H), 4.70 (s, 1H), 4.00 (s, 2H), 3.46 (dd, J = 10.7, 2.3 Hz, 2H), 3.38 – 3.34 (m, 2H), 2.94 (d, J = 9.5 Hz, 2H), 2.48 (s, 3H), 2.32 – 2.23 (m, 2H), 1.57 (ddd, J = 13.3, 8.1, 2.9 Hz, 2H), 1.08 (s, 6H). Example 123: 7-endo-5-[2-methyl-5-[[(1S,5R)-3-oxa-9-azabicyclo[3.3.1]nona n-7-yl]oxy]-4- pyridyl]-N-(1-methylpyrazol-4-yl)pyrazolo[1,5-a]pyridin-2-am ine. 1 mg, 12%) was prepared as described in Example 116 steps A-B where 4-bromo-1-methyl-1H-pyrazole was used instead of 4-bromo-1-(difluoromethyl)-1H- pyrazole in step A. MS (ESI): mass calcd. for C24H27N7O2, 445.2; m/z found, 446.1 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 8.44 – 8.37 (m, 2H), 8.27 (s, 1H), 7.80 (dd, J = 2.0, 0.9 Hz, 1H), 7.75 (d, J = 0.8 Hz, 1H), 7.36 (d, J = 0.8 Hz, 1H), 7.33 (s, 1H), 6.94 (dd, J = 7.2, 2.0 Hz, 1H), 5.88 (d, J = 0.8 Hz, 1H), 4.68 – 4.58 (m, 1H), 3.80 (s, 3H), 3.55 (d, J = 10.4 Hz, 2H), 3.49 (d, J = 10.6 Hz, 2H), 2.92 (s, 2H), 2.45 (s, 3H), 2.28 (dt, J = 14.3, 7.5 Hz, 2H), 1.64 (dd, J = 13.7, 6.6 Hz, 2H). Example 124: 7-endo-N-(1-methyl-1H-pyrazol-4-yl)-5-(2-methyl-5-(((1R,5S,7 s)-9-methyl-3- oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)pyridin-4-yl)pyrazolo[ 1,5-a]pyridin-2-amine. 8

The title compound (6.1 mg, 6%) was prepared as described in Example 116 steps A-C where 4-bromo-1-methyl-1H-pyrazole was used instead of 4-bromo-1-(difluoromethyl)-1H- pyrazole in step A. MS (ESI): mass calcd. for C ₂₅ H ₂₉ N ₇ O ₂ , 459.2; m/z found, 460.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 8.41 – 8.37 (m, 2H), 8.18 (s, 1H), 7.97 (dd, J = 2.0, 0.9 Hz, 1H), 7.75 (d, J = 0.8 Hz, 1H), 7.36 (t, J = 0.9 Hz, 2H), 7.02 (dd, J = 7.2, 2.0 Hz, 1H), 5.84 (d, J = 0.8 Hz, 1H), 4.66 (dt, J = 6.8, 3.6 Hz, 1H), 3.81 – 3.76 (m, 5H), 3.48 (d, J = 10.8 Hz, 2H), 2.66 – 2.59 (m, 2H), 2.44 (s, 3H), 2.43 – 2.33 (m, 5H), 1.63 (d, J = 14.9 Hz, 2H). Example 125: endo-5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)o xy)-2- methylpyridin-4-yl)-N-(1-methyl-1H-pyrazol-3-yl)pyrazolo[1,5 -a]pyridin-2-amine. harged endo-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride (244 mg, 1.36 mmol) and DMA (2.1 mL). NaH (60% dispersion in mineral oil) (217 mg, 5.42 mmol) was added and the resulting suspension was heated to 80 °C for 10 min. 5- (5-fluoro-2-methylpyridin-4-yl)-N-(1-methyl-1H-pyrazol-3-yl) pyrazolo[1,5-a]pyridin-2-amine (175 mg, 0.543 mmol) was added and the temperature of the reaction was increased to 100 °C. The reaction was stirred 2 hours at 100 °C. The reaction was cooled to room temperature and was quenched by pouring it into stirring water (20 mL). This mixture was extracted with ethyl acetate then with 10% MeOH/ethyl acetate. The combined organic fractions were dried (Na ₂ SO ₄ ) then concentrated to dryness. The product was purified over Basic ISCO (Gemini 5 uM NX-C18110 angstrom LC column 150 x 21.2 mm; 10-100% AcN / 20 mM aq NH3 over 15 min; 40 mL/min) to afford the title compound (167 mg, 69%) as colorless solid. MS (ESI): mass calcd. for C ₂₄ H ₂₇ N ₇ O ₂ , 445.2; m/z found, 446.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 9.03 (s, 1H), 8.42 (d, J = 7.2 Hz, 1H), 8.28 (s, 1H), 7.86 (s, 1H), 7.49 (s, 1H), 7.34 (s, 1H), 6.99 (d, J = 7.2 Hz, 1H), 6.38 (s, 1H), 6.07 (d, J = 2.4 Hz, 1H), 4.71 – 4.57 (m, 1H), 3.74 (s, 3H), 3.53 (q, 189

J = 10.6 Hz, 4H), 2.93 (d, J = 8.5 Hz, 2H), 2.46 (s, 3H), 2.37 – 2.18 (m, 3H), 1.71 – 1.56 (m, 2H). Example 126: 7-endo-N-(5-fluoropyridin-2-yl)-5-(2-methyl-5-(((1R,5S,7s)-9 -methyl-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl)oxy)pyridin-4-yl)pyrazolo[1,5-a] pyridin-2-amine. 7.6 mg, 15%) was prepared as described in Example 116 steps A-C where 2-bromo-5-fluoropyridine was used instead of 4-bromo-1-(difluoromethyl)-1H-pyrazole; BrettPhos-Pd-G3, [(2-Di-cyclohexylphosphino-3,6-dimethoxy-2′,4′,6′- triisopropyl-1,1′- biphenyl)-2-(2′-amino-1,1′ -biphenyl)]palladium(II) methanesulfonate methanesulfonate and 2- (Dicyclohexylphosphino)3,6-dimethoxy-2′,4′,6′-triisopr opyl-1,1′-biphenyl (10 mol%) was used instead of tert-BuBrettPhos-Pd-G3, [(2-Di-tert-butylphosphino-3,6-dimethoxy-2′,4′,6′- triisopropyl-1,1′-biphenyl)-2-(2′-amino-1,1′-biphenyl) ]palladium(II) methanesulfonate in step A. MS (ESI): mass calcd. for C26H27FN6O2, 474.2; m/z found, 475.1 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 9.82 (s, 1H), 8.48 (dt, J = 7.2, 0.9 Hz, 1H), 8.23 – 8.18 (m, 2H), 8.12 (dd, J = 2.0, 0.9 Hz, 1H), 7.61 (ddd, J = 9.2, 8.4, 3.1 Hz, 1H), 7.40 (dd, J = 9.2, 3.8 Hz, 1H), 7.38 (s, 1H), 7.16 (dd, J = 7.2, 2.0 Hz, 1H), 6.72 (d, J = 0.8 Hz, 1H), 4.68 (dt, J = 6.6, 3.5 Hz, 1H), 3.79 (dd, J = 10.8, 2.5 Hz, 2H), 3.49 (d, J = 11.0 Hz, 2H), 2.63 (d, J = 6.7 Hz, 2H), 2.45 (s, 3H), 2.40 (s, 5H), 1.64 (d, J = 14.9 Hz, 2H). Example 127: 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4- yl)-N-(5-fluoropyridin-2-yl)pyrazolo[1,5-a]pyridin-2-amine. 190

The title compound (17.6 mg, 15%) was prepared as described in Example 116 steps A-B where 2-bromo-5-fluoropyridine was used instead of 4-bromo-1-(difluoromethyl)-1H-pyrazole; BrettPhos Pd G3, [(2-Di-cyclohexylphosphino-3,6-dimethoxy-2′,4′,6′- triisopropyl-1,1′- biphenyl)-2-(2′-amino-1,1′ -biphenyl)]palladium(II) methanesulfonate methanesulfonate and 2- (Dicyclohexylphosphino)3,6-dimethoxy-2′,4′,6′-triisopr opyl-1,1′-biphenyl (10 mol%) was used instead of tert-BuBrettPhos-Pd-G3, [(2-Di-tert-butylphosphino-3,6-dimethoxy-2′,4′,6′- triisopropyl-1,1′-biphenyl)-2-(2′-amino-1,1′-biphenyl) ]palladium(II) methanesulfonate in step A. MS (ESI): mass calcd. for C25H25FN6O2, 460.2; m/z found, 461.1 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 9.83 (s, 1H), 8.51 (dt, J = 7.3, 0.9 Hz, 1H), 8.29 (s, 1H), 8.20 (d, J = 3.1 Hz, 1H), 7.95 (dd, J = 2.1, 0.9 Hz, 1H), 7.61 (ddd, J = 9.1, 8.3, 3.1 Hz, 1H), 7.39 (dd, J = 9.2, 3.8 Hz, 1H), 7.35 (s, 1H), 7.07 (dd, J = 7.2, 2.0 Hz, 1H), 6.75 (d, J = 0.9 Hz, 1H), 4.66 (q, J = 6.4 Hz, 1H), 3.56 (dd, J = 10.7, 2.3 Hz, 2H), 3.50 (d, J = 10.5 Hz, 2H), 2.93 (d, J = 8.6 Hz, 2H), 2.46 (s, 3H), 2.29 (dt, J = 14.4, 7.6 Hz, 2H), 1.65 (ddd, J = 13.7, 6.7, 2.6 Hz, 2H). Example 128: 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-(1 -methylpyrazol-4- yl)pyrazolo[1,5-a]pyridin-2-amine. .2 mg, 4.8%) was prepared as described in Example 116 steps A-B where 4-bromo-1-methyl-1H-pyrazole was used instead of 4-bromo-1-(difluoromethyl)-1H- pyrazole, Intermediate 13 was used in place of 191

Intermediate 9 in step A and HCl/1,4-dioxane was used instead of trifluoracetic acid in step B. MS (ESI): mass calcd. for C22H25N7O2, 419.2; m/z found, 420.40 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 8.48 - 8.43 (m, 2H), 8.30 (s, 1H), 7.77 (s, 1H), 7.67 (d, J = 1.2 Hz, 1H), 7.37 (s, 1H), 7.34 (s, 1H), 6.87 (dd, J = 2.0, 7.2 Hz, 1H), 5.91 (s, 1H), 4.08 (d, J = 4.8 Hz, 2H), 3.80 (s, 3H), 3.78 - 3.73 (m, 1H), 3.70 - 3.63 (m, 1H), 3.48 - 3.43 (m, 1H), 2.83 - 2.76 (m, 1H), 2.66 - 2.57 (m, 2H), 2.55 - 2.53 (m, 1H), 2.45 (s, 3H). Example 129: 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-(1 -methylpyrazol-3- yl)pyrazolo[1,5-a]pyridin-2-amine. 4.2 mg, 11%) was prepared as described in Example 116 steps A-B where 3-bromo-1-methyl-1H-pyrazole was used instead of 4-bromo-1-(difluoromethyl)-1H- pyrazole, Intermediate 13 instead of Intermediate 9, t-BuXphos-Pd-G3/t-BuXPhos in place of t-BuBrettPhos-Pd-G3, sodium tert-butoxide in place of cesium carbonate, and THF in place of 1,4-dioxane in step A and HCl/1,4-dioxane was used instead of trifluoracetic acid in step B. MS (ESI): mass calcd. for C22H25N7O2, 419.2; m/z found, 420.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.08 (s, 1H), 8.45 (d, J = 7.2 Hz, 1H), 8.31 (s, 1H), 7.73 (d, J = 1.2 Hz, 1H), 7.49 (d, J = 2.0 Hz, 1H), 7.34 (s, 1H), 6.92 (dd, J = 2.0, 7.2 Hz, 1H), 6.42 (s, 1H), 6.07 (d, J = 2.0 Hz, 1H), 4.11 (d, J = 4.4 Hz, 2H), 3.84 - 3.78 (m, 1H), 3.78 - 3.75 (m, 1H), 3.74 (s, 3H), 3.54 - 3.50 (m, 1H), 2.95 - 2.83 (m, 1H), 2.80 - 2.73 (m, 1H), 2.72 - 2.63 (m, 1H), 2.62 - 2.54 (m, 1H), 2.46 (s, 3H). Example 130: 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-(2 - pyridyl)pyrazolo[1,5-a]pyridin-2-amine. 192

(47 mg, 17%) was prepared as described in Example 116 steps A-B where 2-bromopyridine was used instead of 4-bromo-1-(difluoromethyl)-1H-pyrazole and Intermediate 13 was used instead of Intermediate 9 in step A. MS (ESI): mass calcd. for C ₂₃ H ₂₄ N ₆ O ₂ , 416.2; m/z found, 417.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.79 (s, 1H), 8.54 (d, J = 7.2 Hz, 1H), 8.32 (s, 1H), 8.22 (dd, J = 1.2, 4.8 Hz, 1H), 7.82 (d, J = 1.2 Hz, 1H), 7.67 - 7.56 (m, 1H), 7.37 - 7.31 (m, 2H), 7.00 (dd, J = 2.0, 7.2 Hz, 1H), 6.86 (s, 1H), 6.80 (dd, J = 5.6, 6.8 Hz, 1H), 4.19 - 4.01 (m, 2H), 3.82 - 3.71 (m, 1H), 3.71 - 3.62 (m, 1H), 3.52 - 3.39 (m, 1H), 2.81 (dd, J = 1.6, 12.0 Hz, 1H), 2.71 - 2.57 (m, 2H), 2.55 - 2.52 (m, 1H), 2.46 (s, 3H). Example 131: 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-(3 - pyridyl)pyrazolo[1,5-a]pyridin-2-amine. (31 mg, 14%) was prepared as described in Example 116 steps A-B where 3-bromopyridine was used instead of 4-bromo-1-(difluoromethyl)-1H-pyrazole and Intermediate 13 was used instead of Intermediate 9 in step A. MS (ESI): mass calcd. for C23H24N6O2, 416.2; m/z found, 417.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 9.24 (s, 1H), 8.72 (d, J = 2.4 Hz, 1H), 8.59 (d, J = 7.2 Hz, 1H), 8.32 (s, 1H), 8.09 - 7.99 (m, 2H), 7.79 (d, J = 1.2 Hz, 1H), 7.36 (s, 1H), 7.32 - 7.23 (m, 1H), 6.98 (dd, J = 2.0, 7.2 Hz, 1H), 6.15 (s, 1H), 4.09 (d, J = 4.8 Hz, 2H), 3.82 - 3.73 (m, 1H), 3.71 - 3.63 (m, 1H), 3.52 - 3.40 (m, 1H), 2.81 (d, J = 12.0 Hz, 1H), 2.71 - 2.57 (m, 2H), 2.56 - 2.52 (m, 1H), 2.46 (s, 3H). 193

Example 132: 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-py rimidin-4-yl- pyrazolo[1,5-a]pyridin-2-amine. (32 mg, 8%) was prepared as described in Example 116 steps A-B where 4-chloropyrimidine hydrogen chloride was used instead of 4-bromo-1-(difluoromethyl)- 1H-pyrazole and Intermediate 13 was used instead of Intermediate 9 in step A. MS (ESI): mass calcd. for C22H23N7O2, 417.2; m/z found, 418.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.80 (d, J = 0.8 Hz, 1H), 8.45 (d, J = 6.0 Hz, 1H), 8.37 - 8.33 (m, 1H), 8.27 (s, 1H), 7.71 - 7.67 (m, 1H), 7.53 (s, 1H), 7.41 (d, J = 6.0 Hz, 1H), 7.18 (s, 1H), 7.00 (dd, J = 1.6, 7.2 Hz, 1H), 6.60 (s, 1H), 4.14 - 4.08 (m, 1H), 4.06 - 4.00 (m, 1H), 3.94 - 3.88 (m, 1H), 3.86 - 3.78 (m, 1H), 3.69 - 3.59 (m, 1H), 2.98 - 2.90 (m, 1H), 2.89 - 2.79 (m, 2H), 2.77 - 2.68 (m, 1H), 2.56 (s, 3H). Example 133: N-(1-isopropylpyrazol-4-yl)-5-[2-methyl-5-[[(2S)-morpholin-2 -yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine. g, 10%) was prepared as described in Example 116 steps A-B where 4-iodo-1-isopropyl-1H-pyrazole was used instead of 4-bromo-1-(difluoromethyl)-1H- pyrazole and Intermediate 13 was used instead of Intermediate 9 in step A. MS (ESI): mass calcd. for C ₂₄ H ₂₉ N ₇ O ₂ , 447.24; m/z found, 448.3 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.27 - 8.21 (m, 2H), 7.63 (s, 1H), 7.51 - 7.46 (m, 2H), 7.16 (s, 1H), 6.82 (dd, J = 1.6, 6.8 Hz, 1H), 5.90 - 5.82 (m, 2H), 4.54 - 4.43 (m, 1H), 4.12 - 4.04 (m, 1H), 4.03 - 3.96 (m, 1H), 3.94 - 3.87 (m, 1H), 3.86 - 3.79 (m, 1H), 3.71 - 3.61 (m, 1H), 194

2.99 - 2.91 (m, 1H), 2.89 - 2.81 (m, 2H), 2.77 - 2.67 (m, 1H), 2.54 (s, 3H), 1.53 (d, J = 6.8 Hz, 6H). Example 134: 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-py ridazin-3-yl- pyrazolo[1,5-a]pyridin-2-amine. 0 mg, 41%) was prepared as described in Example 116 steps A-B where 3-bromopyridazine was used instead of 4-bromo-1-(difluoromethyl)-1H-pyrazole and Intermediate 13 was used instead of Intermediate 9 in step A. MS (ESI): mass calcd. for C22H23N7O2, 417.2; m/z found, 418.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.99 (s, 1H), 8.80 - 8.75 (m, 1H), 8.37 (d, J = 7.2 Hz, 1H), 8.26 (s, 1H), 8.11 (dd, J = 0.8, 8.8 Hz, 1H), 7.68 (d, J = 0.8 Hz, 1H), 7.42 (dd, J = 4.4, 8.8 Hz, 1H), 7.19 (s, 1H), 6.96 (dd, J = 2.0, 7.2 Hz, 1H), 6.65 (s, 1H), 4.14 - 4.07 (m, 1H), 4.06 - 3.99 (m, 1H), 3.95 - 3.88 (m, 1H), 3.86 - 3.78 (m, 1H), 3.68 - 3.60 (m, 1H), 2.99 - 2.92 (m,1H), 2.91 - 2.78 (m, 2H), 2.77 - 2.68 (m, 1H), 2.56 (s, 3H). Example 135: N-(1-isopropylpyrazol-3-yl)-5-[2-methyl-5-[[(2S)-morpholin-2 -yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine. mg, 38%) was prepared as described in Example 116 steps A-B where 3-iodo-1-isopropyl-1H-pyrazole was used instead of 4-bromo-1-(difluoromethyl)-1H- pyrazole and Intermediate 13 was used instead of Intermediate 9 in step A. MS (ESI): mass calcd. for C ₂₄ H ₂₉ N ₇ O ₂ , 447.2; m/z found, 448.3 [M+H] ⁺ . ¹ H NMR (400 MHz, CD3CN) δ 8.32 (d, J = 7.2 Hz, 1H), 8.25 (s, 1H), 7.75 - 7.67 (m, 195

1H), 7.50 (s, 1H), 7.42 (d, J = 2.4 Hz, 1H), 7.27 (s, 1H), 6.91 (dd, J = 2.0, 7.2 Hz, 1H), 6.49 (s, 1H), 6.08 (d, J = 2.4 Hz, 1H), 4.43 - 4.32 (m, 1H), 4.11 - 4.00 (m, 2H), 3.85 - 3.76 (m, 1H), 3.75 - 3.67 (m, 1H), 3.57 - 3.45 (m, 1H), 2.85 (dd, J = 2.0, 12.0 Hz, 1H), 2.73 - 2.68 (m, 2H), 2.64 - 2.55 (m, 1H), 2.47 (s, 3H), 1.45 (d, J = 6.8 Hz, 6H). Example 136: endo-N-(5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-y l)oxy)-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanec arboxamide. ning endo-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride (255 mg, 1.42 mmol, 2.2 eq) dissolved in DMA (2.58 mL, 0.64 mmol, 0.25 M) was added sodium hydride (60 wt% dispersion in mineral oil, 258 mg, 6.45 mmol, 10 eq) portion-wisely while stirring at rt. The suspension was heated at 50 °C for 5 min, then N-(5-(5- fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cycl opropanecarboxamide (Intermediate 6, 200 mg, 0.64 mmol, 1.0 eq) was added. The mixture was stirred at 90 °C for 2 hours, then quenched with water. The aqueous layer was extracted several times with 10% MeOH / DCM, and the organic extracts were dried over sodium sulfate. The product was purified over FCC (10% 2M NH3 in MeOH / DCM) to provide the title compound (282 mg, 100%). MS (ESI): mass calcd. for C ₂₄ H ₂₇ N ₅ O ₃ , 433.2; m/z found, 434.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.07 (s, 1H), 8.57 – 8.51 (m, 1H), 8.28 (s, 1H), 8.08 – 8.05 (m, 1H), 7.37 (s, 1H), 7.17 (dd, J = 7.3, 2.0 Hz, 1H), 6.85 (s, 1H), 4.76 – 4.54 (m, 1H), 3.61 – 3.54 (m, 2H), 3.50 (d, J = 10.6 Hz, 2H), 2.96 – 2.88 (m, 2H), 2.45 (s, 3H), 2.32 – 2.24 (m, 2H), 1.97 – 1.88 (m, 1H), 1.71 – 1.61 (m, 2H), 0.87 – 0.77 (m, 4H). Example 137: N-[5-[2-methyl-5-[(3R)-1-methylpyrrolidin-3-yl]oxy-4-pyridyl ]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 196

33 mg, 71%) was prepared as described in Example 136 where (R)-(-)-1-methyl-3-pyrrolidinol was used instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C22H25N5O2, 391.2; m/z found, 392.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.08 (s, 1H), 8.60 – 8.52 (m, 1H), 8.24 (s, 1H), 7.86 – 7.79 (m, 1H), 7.35 (s, 1H), 7.05 (dd, J = 7.3, 2.0 Hz, 1H), 6.88 (s, 1H), 5.06 – 4.97 (m, 1H), 2.82 – 2.71 (m, 1H), 2.67 – 2.58 (m, 2H), 2.45 (s, 3H), 2.40 – 2.26 (m, 2H), 2.24 (s, 3H), 1.98 – 1.89 (m, 1H), 1.84 – 1.71 (m, 1H), 0.88 – 0.77 (m, 4H). Example 138: N-(5-(2-methyl-5-(((1R,3r,5S)-8-methyl-8-azabicyclo[3.2.1]oc tan-3- yl)oxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropane carboxamide. 1.2 mg, 39%) was prepared as described in Example 136 where tropine (CAS 120-29-6) was used instead of endo-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C25H29N5O2, 431.2; m/z found, 432.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.09 (s, 1H), 10.26 (s, 1H), 8.63 – 8.54 (m, 1H), 8.33 (s, 1H), 7.84 – 7.72 (m, 1H), 7.34 (s, 1H), 7.33 – 7.04 (m, 2H), 6.99 (dd, J = 7.2, 2.0 Hz, 1H), 6.91 (s, 1H), 4.89 – 4.81 (m, 1H), 3.74 (s, 2H), 2.58 – 2.55 (m, 2H), 2.46 (s, 3H), 2.17 – 2.08 (m, 2H), 1.98 – 1.85 (m, 3H), 1.84 – 1.74 (m, 2H), 0.86 – 0.79 (m, 4H). 197

Example 139: N-[5-[2-methyl-5-[(3S)-1-methylpyrrolidin-3-yl]oxy-4-pyridyl ]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 40 mg, 74%) was prepared as described in Example 136 where (S)- (+)-1-methyl-3-pyrrolidinol was used instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C ₂₂ H ₂₅ N ₅ O ₂ , 391.2; m/z found, 392.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.08 (s, 1H), 8.63 – 8.46 (m, 1H), 8.24 (s, 1H), 7.87 – 7.74 (m, 1H), 7.35 (s, 1H), 7.05 (dd, J = 7.3, 2.0 Hz, 1H), 6.94 – 6.79 (m, 1H), 5.07 – 4.92 (m, 1H), 2.77 (dd, J = 10.5, 5.9 Hz, 1H), 2.68 – 2.57 (m, 2H), 2.45 (s, 3H), 2.38 – 2.25 (m, 2H), 2.23 (s, 3H), 1.96 – 1.87 (m, 1H), 1.85 – 1.73 (m, 1H), 0.89 – 0.75 (m, 4H). Example 140: N-(5-(2-methyl-5-(((1R,3r,5S)-8-methyl-8-azabicyclo[3.2.1]oc tan-3- yl)oxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropane carboxamide. 76 mg, 84%) was prepared as described in Example 136 where pseudotropanol (CAS 135-97-7) was used instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C25H29N5O2, 431.2; m/z found, 432.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.07 (s, 1H), 8.61 – 8.51 (m, 1H), 8.38 (s, 1H), 7.79 – 7.71 (m, 1H), 7.33 (s, 1H), 7.01 (dd, J = 7.2, 2.0 Hz, 1H), 6.88 (s, 1H), 4.62 – 4.48 (m, 1H), 3.11 – 3.04 (m, 2H), 2.45 (s, 3H), 2.15 (s, 3H), 1.97 – 1.83 (m, 5H), 1.62 – 1.50 (m, 4H), 0.88 – 0.78 (m, 4H). 198

Example 141: N-[5-[5-(1-ethylazetidin-3-yl)oxy-2-methyl-4-pyridyl]pyrazol o[1,5-a]pyridin-2- yl]cyclopropanecarboxamide. 0.7 mg, 37%) was prepared as described in Example 136 where 1- ethylazetidin-3-ol was used instead of endo-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C22H25N5O2, 391.2; m/z found, 392.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.09 (s, 1H), 8.57 (dd, J = 7.3, 1.0 Hz, 1H), 8.08 (s, 1H), 7.85 – 7.80 (m, 1H), 7.37 (s, 1H), 7.06 (dd, J = 7.2, 2.0 Hz, 1H), 6.90 (s, 1H), 4.99 – 4.82 (m, 1H), 3.76 – 3.66 (m, 2H), 2.98 – 2.91 (m, 2H), 2.48 – 2.39 (m, 5H), 1.98 – 1.90 (m, 1H), 0.91 – 0.77 (m, 7H). Example 142: N-[5-[5-(1-isopropylazetidin-3-yl)oxy-2-methyl-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. The title compound (147 mg, 75%) was prepared as described in Example 136 where 1- isopropylazetidin-3-ol was used instead of endo-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C ₂₃ H ₂₇ N ₅ O ₂ , 405.2; m/z found, 406.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 11.09 (s, 1H), 8.62 – 8.51 (m, 1H), 8.09 (s, 1H), 7.88 – 7.78 (m, 199

1H), 7.36 (s, 1H), 7.05 (dd, J = 7.2, 2.0 Hz, 1H), 6.91 (s, 1H), 4.91 – 4.79 (m, 1H), 3.75 – 3.61 (m, 2H), 2.98 – 2.89 (m, 2H), 2.46 (s, 3H), 2.34 – 2.26 (m, 1H), 1.97 – 1.89 (m, 1H), 0.85 (d, J = 6.2 Hz, 6H), 0.84 – 0.79 (m, 4H). Example 143: N-[5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]py razolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 3.0 mg, 37%) was prepared as described in Example 136 where [(2S)-morpholin-2-yl]methanol hydrochloride was used instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C ₂₂ H ₂₅ N ₅ O ₃ , 407.2; m/z found, 408.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.08 (s, 1H), 8.63 – 8.50 (m, 1H), 8.32 (s, 1H), 7.96 – 7.85 (m, 1H), 7.36 (s, 1H), 7.09 (dd, J = 7.3, 2.0 Hz, 1H), 6.88 (s, 1H), 4.09 (d, J = 4.9 Hz, 2H), 3.79 – 3.71 (m, 1H), 3.71 – 3.62 (m, 1H), 3.48 – 3.41 (m, 1H), 2.84 – 2.77 (m, 1H), 2.69 – 2.56 (m, 2H), 2.54 – 2.48 (m, 1H), 2.46 (s, 3H), 1.98 – 1.88 (m, 1H), 0.88 – 0.75 (m, 4H). Example 144: N-[5-[5-[(3-aminooxetan-3-yl)methoxy]-2-methyl-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 0 mg, 24%) was prepared as described in Example 136 where (3- aminooxetan-3-yl)methanol was used instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C21H23N5O3, 393.2; m/z found, 394.20 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.08 (s, 1H), 8.54 (dt, J = 7.3, 0.9 Hz, 1H), 8.39 (s, 1H), 7.91 (dd, J = 2.1, 0.9 Hz, 1H), 7.39 (s, 1H), 7.09 (dd, J = 7.2, 2.0 Hz, 1H), 200

6.86 (s, 1H), 4.44 (d, J = 6.1 Hz, 2H), 4.31 (d, J = 6.0 Hz, 2H), 4.19 (s, 2H), 2.47 (s, 3H), 2.22 (s, 2H), 1.93 (s, 1H), 0.90 – 0.73 (m, 4H). Example 145: N-[5-[5-[(1-amino-3,3-difluoro-cyclobutyl)methoxy]-2-methyl- 4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 5 mg, 33%) was prepared as described in Example 136 where (1- amino-3,3-difluorocyclobutyl)methanol was used instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C ₂₂ H ₂₃ F ₂ N ₅ O ₂ , 427.2; m/z found, 428.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.08 (s, 1H), 8.55 (dt, J = 7.3, 0.9 Hz, 1H), 8.35 (s, 1H), 7.86 (dd, J = 2.0, 0.9 Hz, 1H), 7.37 (s, 1H), 7.07 (dd, J = 7.2, 2.0 Hz, 1H), 6.96 – 6.82 (m, 1H), 4.02 (s, 2H), 2.69 (td, J = 13.9, 10.8 Hz, 2H), 2.47 (s, 3H), 2.37 (td, J = 14.3, 11.3 Hz, 2H), 2.05 (s, 2H), 1.93 (td, J = 7.2, 3.7 Hz, 1H), 0.82 (tt, J = 7.9, 3.0 Hz, 4H). Example 146: trans-N-[5-[5-(3-methoxycyclobutoxy)-2-methyl-4-pyridyl]pyra zolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 0 mg, 24%) was prepared as described in Example 136 where trans-3-methoxycyclobutan-1-ol was used instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C ₂₂ H ₂₄ N ₄ O ₃ , 392.2; m/z found, 393.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.08 (s, 1H), 8.56 (dq, J = 7.2, 1.0 Hz, 1H), 8.08 (s, 1H), 7.81 (ddd, J = 4.2, 2.0, 1.0 Hz, 1H), 7.35 (d, J = 2.2 Hz, 1H), 7.05 (dt, J = 7.2, 201

2.3 Hz, 1H), 6.90 (d, J = 0.9 Hz, 1H), 4.96 (tt, J = 7.0, 4.3 Hz, 1H), 4.04 (tt, J = 6.9, 4.3 Hz, 1H), 3.14 (d, J = 3.8 Hz, 3H), 2.45 (s, 3H), 2.40 (td, J = 6.8, 4.0 Hz, 2H), 2.29 (ddd, J = 13.3, 7.0, 4.1 Hz, 2H), 1.98 – 1.88 (m, 1H), 0.89 – 0.74 (m, 4H). Example 147: cis-N-[5-[5-(3-methoxycyclobutoxy)-2-methyl-4-pyridyl]pyrazo lo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide. 7 mg, 45%) was prepared as described in Example 136 where cis- 3-methoxycyclobutan-1-ol was used instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C22H24N4O3, 392.2; m/z found, 393.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.08 (s, 1H), 8.57 (dd, J = 7.2, 1.0 Hz, 1H), 8.15 (s, 1H), 7.81 (dd, J = 2.1, 0.9 Hz, 1H), 7.35 (s, 1H), 7.04 (dd, J = 7.2, 2.0 Hz, 1H), 6.90 (s, 1H), 4.51 (p, J = 6.9 Hz, 1H), 3.61 (p, J = 6.8 Hz, 1H), 3.14 (s, 3H), 2.85 (dtd, J = 9.5, 6.6, 3.1 Hz, 2H), 2.45 (s, 3H), 1.92 (dddd, J = 17.0, 10.0, 7.4, 4.1 Hz, 3H), 0.82 (tt, J = 7.9, 3.0 Hz, 4H). Example 148: cis-N-[5-[5-[(4-hydroxycyclohexyl)methoxy]-2-methyl-4-pyridy l]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 2

The title compound (26 mg, 19%) was prepared as described in Example 136 where cis- 4-(hydroxymethyl)cyclohexan-1-ol was used instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C ₂₄ H ₂₈ N ₄ O ₃ , 420.2; m/z found, 421.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.07 (s, 1H), 8.55 (dt, J = 7.3, 1.0 Hz, 1H), 8.33 (s, 1H), 7.80 (dd, J = 2.0, 0.9 Hz, 1H), 7.34 (s, 1H), 7.04 (dd, J = 7.2, 2.0 Hz, 1H), 6.87 (s, 1H), 4.26 (s, 1H), 3.95 (d, J = 6.6 Hz, 2H), 3.75 (s, 1H), 2.46 (s, 3H), 1.92 (dd, J = 7.6, 4.9 Hz, 1H), 1.75 (s, 1H), 1.62 – 1.52 (m, 2H), 1.45 (qd, J = 12.9, 12.1, 6.5 Hz, 6H), 0.82 (tt, J = 7.8, 2.9 Hz, 4H). Example 149: N-[5-[5-[(2S)-2-amino-3,3-dimethyl-butoxy]-2-methyl-4-pyridy l]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 7 mg, 36%) was prepared as described in Example 136 where L- tert-leucinol was used instead of endo-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C ₂₃ H ₂₉ N ₅ O ₂ , 407.2; m/z found, 408.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.08 (s, 1H), 8.56 (dt, J = 7.1, 1.0 Hz, 1H), 8.37 (s, 1H), 7.85 (dd, J = 2.0, 0.9 Hz, 1H), 7.33 (s, 1H), 7.07 (dd, J = 7.2, 2.0 Hz, 1H), 6.89 (s, 1H), 4.23 (dd, J = 9.3, 3.2 Hz, 1H), 3.80 (t, J = 8.9 Hz, 1H), 2.69 (dd, J = 8.4, 3.2 Hz, 1H), 2.46 (s, 3H), 1.92 (q, J = 7.9, 6.4 Hz, 1H), 0.87 (s, 9H), 0.85 – 0.77 (m, 4H). Example 150: N-[5-[5-[(2R)-2-amino-3,3-dimethyl-butoxy]-2-methyl-4-pyridy l]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 203

4 mg, 8%) was prepared as described in Example 136 where (R)-2- amino-3,3-dimethylbutan-1-ol was used instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C ₂₃ H ₂₉ N ₅ O ₂ , 407.2; m/z found, 408.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.10 (s, 1H), 8.56 (d, J = 7.2 Hz, 1H), 8.50 (s, 1H), 7.96 – 7.84 (m, 4H), 7.50 (s, 1H), 7.09 (dd, J = 7.2, 2.0 Hz, 1H), 6.94 (s, 1H), 4.36 (dd, J = 10.7, 3.2 Hz, 1H), 4.23 (dd, J = 10.7, 8.1 Hz, 1H), 3.28 (s, 3H), 2.53 (s, 3H), 1.98 – 1.89 (m, 1H), 1.00 (s, 9H), 0.87 – 0.77 (m, 4H). Example 151: trans-N-(5-(5-(((1r,4r)-4-hydroxy-4-methylcyclohexyl)oxy)-2- methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. O N _N 10 mg, 31%) was prepared as described in Example 136 where trans-1-methylcyclohexane-1,4-diol was used instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C ₂₄ H ₂₈ N ₄ O ₃ , 420.2; m/z found, 421.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.07 (s, 1H), 8.58 (d, J = 7.2 Hz, 1H), 8.35 (s, 1H), 7.80 (dd, J = 2.0, 0.9 Hz, 1H), 7.34 (s, 1H), 7.02 (dd, J = 7.2, 2.0 Hz, 1H), 6.87 (s, 1H), 4.69 – 4.58 (m, 1H), 4.06 (s, 1H), 2.45 (s, 3H), 1.96 – 1.90 (m, 1H), 1.88 – 1.76 (m, 2H), 1.65 – 1.56 (m, 2H), 1.42 – 1.22 (m, 4H), 0.92 (s, 3H), 0.88 – 0.76 (m, 4H). 204

Example 152: N-[5-[5-[(1R,3S)-3-aminocyclopentoxy]-2-methyl-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 6 mg, 52%) was prepared as described in Example 136 where (1R,3S)-3-aminocyclopentan-1-ol was used instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C ₂₂ H ₂₅ N ₅ O ₂ , 391.2; m/z found, 392.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.07 (s, 1H), 8.55 (dt, J = 7.3, 1.0 Hz, 1H), 8.26 (s, 1H), 7.85 (dd, J = 2.0, 0.9 Hz, 1H), 7.34 (s, 1H), 7.09 (dd, J = 7.2, 2.0 Hz, 1H), 6.88 (s, 1H), 4.87 (dd, J = 6.5, 3.1 Hz, 1H), 3.18 (dd, J = 12.4, 5.9 Hz, 1H), 2.45 (s, 3H), 2.30 – 2.21 (m, 1H), 1.99 – 1.69 (m, 5H), 1.49 – 1.33 (m, 2H), 0.82 (ddt, J = 8.2, 4.9, 2.9 Hz, 4H). Example 153: N-[5-[5-[(1R,3R)-3-aminocyclopentoxy]-2-methyl-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 0 mg, 32%) was prepared as described in Example 136 where (1R,3R)-3-aminocyclopentan-1-ol was used instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride.MS (ESI): mass calcd. for C22H25N5O2, 391.2; m/z found, 392.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.41 (s, 1H), 8.28 (dt, J = 7.1, 0.9 Hz, 1H), 8.24 (s, 1H), 7.65 (dd, J = 2.0, 0.9 Hz, 1H), 7.18 (s, 1H), 7.02 (s, 1H), 6.95 (dd, J = 7.2, 1.9 Hz, 1H), 4.94 (tt, J = 6.0, 2.7 Hz, 1H), 3.58 (p, J = 6.7 Hz, 1H), 2.56 (s, 3H), 2.32 – 2.19 (m, 1H), 205

2.19 – 2.11 (m, 1H), 2.06 – 1.99 (m, 1H), 1.89 – 1.79 (m, 1H), 1.72 (dt, J = 13.7, 6.7 Hz, 1H), 1.61 (s, 1H), 1.40 (ddt, J = 12.7, 8.9, 6.3 Hz, 1H), 1.21 – 1.12 (m, 2H), 0.99 – 0.88 (m, 2H). Example 154: N-[5-[5-[(1-aminocyclobutyl)methoxy]-2-methyl-4-pyridyl]pyra zolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 01 mg, 52%) was prepared as described in Example 136 where (1- aminocyclobutyl)methanol was used instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C ₂₂ H ₂₅ N ₅ O ₂ , 391.2; m/z found, 392.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.10 (s, 1H), 8.57 (d, J = 7.2 Hz, 1H), 8.36 (s, 1H), 7.88 (d, J = 0.8 Hz, 1H), 7.36 (s, 1H), 7.08 (dd, J = 2.0, 7.2 Hz, 1H), 6.87 (s, 1H), 3.99 (s, 2H), 2.47 (s, 3H), 2.08 - 1.98 (m, 2H), 1.96 - 1.88 (m, 1H), 1.84 - 1.65 (m, 5H), 1.63 - 1.51 (m, 1H), 0.86 - 0.79 (m, 4H). Example 155: N-[5-[5-[(1-aminocyclopentyl)methoxy]-2-methyl-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. (104 mg, 26%) was prepared as described in Example 136 where (1- aminocyclopentyl)methanol was used instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C ₂₃ H ₂₇ N ₅ O ₂ , 405.2; m/z found, 406.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.10 (s, 1H), 8.58 (d, J = 6.8 Hz, 1H), 8.32 (s, 1H), 7.86 (d, J =1.2 Hz, 1H), 7.36 (s, 1H), 7.07 (dd, J = 2.0, 7.2 Hz, 1H), 6.88 (s, 1H), 3.93 (s, 2H), 2.46 (s, 3H), 1.98 - 1.89 (m, 1H), 1.76 - 1.65 (m, 2H), 1.64 - 1.54 (m, 2H), 1.54 - 1.42 (m, 4H), 1.40 - 1.32 (m, 2H), 0.86 - 0.79 (m, 4H). 206

Example 156: N-[5-[2-methyl-5-[[1-(methylamino)cyclobutyl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 7 mg, 22%) was prepared as described in Example 136 where (1- (methylamino)cyclobutyl)methanol was used instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C23H27N5O2, 405.2; m/z found, 406.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.09 (s, 1H), 8.56 (d, J = 7.2 Hz, 1H), 8.39 (s, 1H), 7.91 (s, 1H), 7.36 (s, 1H), 7.08 (dd, J = 1.6, 7.2 Hz, 1H), 6.86 (s, 1H), 4.08 (s, 2H), 2.47 (s, 3H), 2.14 (s, 3H), 1.95 - 1.82 (m, 6H), 1.77 - 1.61 (m, 2H), 0.90 - 0.76 (m, 4H). Example 157: N-[5-[5-[[1-(cyclopropylamino)cyclobutyl]methoxy]-2-methyl-4 - pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 8 mg, 6.4%) was prepared as described in Example 136 where (1- (cyclopropylamino)cyclobutyl)methanol was used instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C25H29N5O2, 431.2; m/z found, 432.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.09 (s, 1H), 8.54 (d, J = 7.2 Hz, 1H), 8.38 (s, 1H), 7.96 (d, J = 0.8 Hz, 1H), 7.38 (s, 1H), 7.11 (dd, J = 2.0, 7.2 Hz, 1H), 6.86 (s, 1H), 4.17 (s, 2H), 2.47 (s, 3H), 2.42 (br s, 1H), 2.06 - 1.88 (m, 6H), 1.74 - 1.64 (m, 2H), 0.87 - 0.79 (m, 4H), 0.33 - 0.27 (m, 2H), 0.15 - 0.09 (m, 2H). 207

Example 158: trans-N-[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]pyra zolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 8 mg, 11%) was prepared as described in Example 136 where (trans)-cyclohexane-1,4-diol was used instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C ₂₃ H ₂₆ N ₄ O ₃ , 406.2; m/z found, 407.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.09 (s, 1H), 8.56 (d, J = 7.2 Hz, 1H), 8.35 (s, 1H), 7.80 (d, J = 0.8 Hz, 1H), 7.34 (s, 1H), 7.03 (dd, J = 1.6, 7.2 Hz, 1H), 6.88 (s, 1H), 4.54 (d, J = 4.0 Hz, 1H), 4.46 - 4.37 (m, 1H), 3.56 - 3.44 (m, 1H), 2.45 (s, 3H), 2.02 - 1.88 (m, 3H), 1.78 - 1.67 (m, 2H), 1.47 - 1.34 (m, 2H), 1.33 - 1.20 (m, 2H), 0.88 - 0.76 (m, 4H). Example 159: (*R)-N-[5-[5-(2-amino-3,3,3-trifluoro-2-methyl-propoxy)-2-me thyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. [5-[5-(2-amino-3,3,3-trifluoro-2-methyl-propoxy)-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide (130 mg, 46%) was prepared as described in Example 136 where (rac-)-2-amino-3,3,3-trifluoro-2-methylpropan-1-ol was used instead of endo-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride. The enantiomers of (rac-)-N-[5-[5-(2-amino-3,3,3-trifluoro-2-methyl-propoxy)-2- methyl-4-pyridyl]pyrazolo[1,5- 208

a]pyridin-2-yl]cyclopropanecarboxamide were separated by SFC over DAICEL CHIRALPAK AD-H 250 mm x 30 mm, 5 µm (eluent: 45% to 45% (v/v) supercritical CO2 in EtOH and H2O with 0.1% NH ₃ ) to afford (*R)-N-[5-[5-(2-amino-3,3,3-trifluoro-2-methyl-propoxy)-2-me thyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide (title compound, 44.10 mg) and (*S)-N-[5-[5-(2-amino-3,3,3-trifluoro-2-methyl-propoxy)-2-me thyl-4-pyridyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide (Example 160, 32.10 mg) as white solids. MS (ESI): mass calcd. for C ₂₁ H ₂₂ F ₃ N ₅ O ₂ , 433.2; m/z found, 434.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.12 (s, 1H), 8.57 (d, J = 7.2 Hz, 1H), 8.36 (s, 1H), 7.84 (d, J = 0.8 Hz, 1H), 7.38 (s, 1H), 7.04 (dd, J = 2.0, 7.2 Hz, 1H), 6.88 (s, 1H), 4.13 (d, J = 10.0 Hz, 1H), 4.10 (d, J = 9.6 Hz, 1H), 2.47 (s, 3H), 2.13 (s, 2H), 1.99 - 1.90 (m, 1H), 1.22 (s, 3H), 0.88 - 0.79 (m, 4H). ¹⁹ F NMR (376 MHz, DMSO-d6) δ -78.2 (s, 3F). Example 160: (*S)-N-[5-[5-(2-amino-3,3,3-trifluoro-2-methyl-propoxy)-2-me thyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. as isolated from the separation of the racemate in Example 159. MS (ESI): mass calcd. for C ₂₁ H ₂₂ F ₃ N ₅ O ₂ , 433.2; m/z found, 434.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.11 (s, 1H), 8.58 (d, J = 7.2 Hz, 1H), 8.36 (s, 1H), 7.86 - 7.81 (m, 1H), 7.38 (s, 1H), 7.04 (dd, J = 2.0, 7.2 Hz, 1H), 6.88 (s, 1H), 4.13 (d, J = 10.0 Hz, 1H), 4.09 (d, J = 10.0 Hz, 1H), 2.47 (s, 3H), 2.13 (s, 2H), 1.98 - 1.88 (m, 1H), 1.21 (s, 3H), 0.86 - 0.78 (m, 4H). ¹⁹ F NMR (376 MHz, DMSO-d6) δ -78.2 (s, 3F). Example 161: 7-endo-N-(5-(5-(((1R,5S,7s)-9-ethyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl)oxy)- 2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropan ecarboxamide. 209

ne (0.195 mL, 2.4 mmol) in 20 mL of acetonitrile was prepared in advance; added 2 mL of this solution (with ~0.24 mmol iodoethane) to a vial containing endo-N- (5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)- 2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (Example 136, 104 mg, 0.24 mmol). This was followed by the addition of DIPEA (0.207 mL, 1.2 mmol) and heating at 50 °C for 16 hours. The reaction was worked up with ethyl acetate, water, and brine. The organic extracts were dried with sodium sulfate and purified over FCC (0-20% 2M NH3 in MeOH / DCM) to provide the title compound (21 mg, 19%) as a white solid. MS (ESI): mass calcd. for C ₂₆ H ₃₁ N ₅ O ₃ , 461.2; m/z found, 462.3 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 11.06 (s, 1H), 8.53 – 8.47 (m, 1H), 8.30 – 8.23 (m, 1H), 8.17 (s, 1H), 7.39 (s, 1H), 7.26 (dd, J = 7.3, 2.1 Hz, 1H), 6.82 (s, 1H), 4.77 – 4.65 (m, 1H), 3.81 – 3.68 (m, 2H), 3.56 (d, J = 10.6 Hz, 2H), 2.81 – 2.70 (m, 2H), 2.61 (q, J = 7.1 Hz, 2H), 2.45 (s, 3H), 2.38 – 2.29 (m, 2H), 1.98 – 1.87 (m, 1H), 1.62 (d, J = 15.2 Hz, 2H), 0.98 (t, J = 7.1 Hz, 3H), 0.87 – 0.78 (m, 4H). Example 162: 5-[5-[(1-amino-3,3-difluoro-cyclobutyl)methoxy]-2-methyl-4-p yridyl]-N-(1- methylpyrazol-3-yl)pyrazolo[1,5-a]pyridin-2-amine. o-3,3-difluorocyclobutyl)methoxy)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-amine. The title compound was prepared in a manner similar to that 210

in Example 136 using 1-amino-3,3-difluoro-cyclobutanemethanol hydrochloride (611 mg, 3.52 mmol) instead of endo-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride and Intermediate 8 (569 mg, 2.35 mmol) instead of Intermediate 6 to provide the product (157 mg, 19%) as a tan foam. MS (ESI): mass calcd. for C ₁₈ H ₁₉ F ₂ N ₅ O, 359.2; m/z found, 360.1 [M+H] ⁺ . 1H NMR (500 MHz, DMSO-d6) δ 8.32 (s, 1H), 8.28 (d, J = 7.1 Hz, 1H), 7.56 – 7.52 (m, 1H), 7.33 (s, 1H), 6.77 (dd, J = 7.2, 2.0 Hz, 1H), 5.69 (s, 1H), 5.33 (s, 2H), 4.00 (s, 2H), 2.75 – 2.64 (m, 2H), 2.46 (s, 3H), 2.42 – 2.31 (m, 2H), 2.04 (br s, 2H). Step B: 5-[5-[(1-amino-3,3-difluoro-cyclobutyl)methoxy]-2-methyl-4-p yridyl]-N-(1- methylpyrazol-3-yl)pyrazolo[1,5-a]pyridin-2-amine. The title compound was prepared in a manner similar to that in Example 116, Step A, using 5-(5-((1-amino-3,3- difluorocyclobutyl)methoxy)-2-methylpyridin-4-yl)pyrazolo[1, 5-a]pyridin-2-amine (35 mg, 0.1 mmol) instead of tert-butyl (1R,5S,7s)-7-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonane-9-ca rboxylate and 3-bromo-1-methyl- 1H-pyrazole (45 mg, 0.28 mmol) instead of 4-bromo-1-(difluoromethyl)-1H-pyrazole and Brettphos-Pd-G2 (16 mg, 0.02 mmol) instead of BuBrettPhos-Pd-G3 and the addition of Brettphos (10 mg, 0.02 mmol) to give the product as a white solid (17 mg, 41%). MS (ESI): mass calcd. for C ₂₂ H ₂₃ F ₂ N ₇ O, 439.2; m/z found, 440.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 9.05 (s, 1H), 8.42 (d, J = 7.1 Hz, 1H), 8.33 (s, 1H), 7.68 (d, J = 2.0 Hz, 1H), 7.49 (d, J = 2.2 Hz, 1H), 7.34 (s, 1H), 6.88 (dd, J = 7.2, 2.0 Hz, 1H), 6.39 (s, 1H), 6.07 (d, J = 2.2 Hz, 1H), 4.01 (s, 2H), 3.73 (s, 3H), 2.76 – 2.63 (m, 2H), 2.47 (s, 3H), 2.43 – 2.30 (m, 2H), 2.04 (s, 2H). Example 163: (1r,4r)-1-methyl-4-((6-methyl-4-(2-((1-methyl-1H-pyrazol-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)pyridin-3-yl)oxy)cycloh exan-1-ol. 11

Step A: (1r,4r)-4-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylp yridin-3-yl)oxy)-1- methylcyclohexan-1-ol. The title compound was prepared in a manner similar to that in Example 136 using (1r,4r)-1-methylcyclohexane-1,4-diol (960 mg, 7.37 mmol) instead of endo-7- hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride and Intermediate 8 (1.06 g, 4.38 mmol) instead of Intermediate 6 and NMP (20 mL) instead of DMA to provide the product (857 mg, 56%). Step B: (1r,4r)-1-methyl-4-((6-methyl-4-(2-((1-methyl-1H-pyrazol-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)pyridin-3-yl)oxy)cycloh exan-1-ol. The title compound was prepared in a manner similar to that in Example 116, Step A, using (1r,4r)-4-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylp yridin-3-yl)oxy)-1- methylcyclohexan-1-ol (107 mg, 0.30 mmol)) instead of tert-butyl (1R,5S,7s)-7-((4-(2- aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)- 3-oxa-9-azabicyclo[3.3.1]nonane- 9-carboxylate and 4-bromo-1-methyl-1H-pyrazole (97 mg, 0.60 mmol) instead of 4-bromo-1- (difluoromethyl)-1H-pyrazole to give the product (50 mg, 38%). MS (ESI): mass calcd. for C24H28N6O2, 432.2; m/z found, 433.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) d 8.47 (d, J = 7.1 Hz, 2H), 8.44 (s, 1H), 8.34 (s, 1H), 7.77 (d, J = 0.8 Hz, 1H), 7.60 – 7.55 (m, 1H), 7.37 (d, J = 0.8 Hz, 1H), 7.32 (s, 1H), 6.81 (dd, J = 7.2, 2.0 Hz, 1H), 5.91 (d, J = 0.7 Hz, 1H), 4.67 – 4.58 (m, 1H), 4.06 (br s, 1H), 3.81 (s, 3H), 2.45 (s, 3H), 1.88 – 1.75 (m, 2H), 1.67 – 1.55 (m, 2H), 1.46 – 1.34 (m, 2H), 1.32 – 1.22 (m, 2H), 0.94 (s, 3H). Example 164: N-(5-(2-methyl-5-(((1S,4S,7R)-5-methyl-2-oxa-5-azabicyclo[2. 2.1]heptan-7- yl)oxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropane carboxamide. charged N-(5-(5-(((1S,4S,7R)-2-oxa-5-azabicyclo[2.2.1]heptan-7- yl)oxy)-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyc lopropanecarboxamide (Example 212

165, 45 mg, 0.11 mmol), methanol (2.2 mL), paraformaldehyde (15 mg, 0.17 mmol), and sodium cyanoborohydride (21 mg, 0.33 mmol). The resulting mixture was stirred for 20 min then portioned between ethyl acetate and water. The layers were separated and the organics dried with MgSO ₄ , filtered, then concentrated to dryness. The residue was purified by flash column chromatography (0-25% 2 N NH3/methanol in dichloromethane) and the fractions containing product were combined and concentrated to afford the title compound (37 mg, 80%) as a yellow solid. MS (ESI): mass calcd. for C ₂₃ H ₂₅ N ₅ O ₃ , 419.2; m/z found, 420.2 [M+H] ⁺ . ¹ H NMR (500 MHz, CD3OD) δ 8.44 – 8.39 (m, 2H), 7.78 – 7.74 (m, 1H), 7.41 – 7.39 (m, 1H), 7.04 (dd, J = 7.2, 2.0 Hz, 1H), 6.90 (s, 1H), 4.94 (d, J = 2.3 Hz, 1H), 4.33 – 4.29 (m, 1H), 4.15 (d, J = 8.4 Hz, 1H), 3.85 (dd, J = 8.3, 2.0 Hz, 1H), 3.47 (t, J = 2.1 Hz, 1H), 3.12 (dd, J = 10.7, 1.8 Hz, 1H), 2.65 (dd, J = 10.8, 0.8 Hz, 1H), 2.54 (s, 3H), 2.44 (s, 3H), 1.91 – 1.83 (m, 1H), 1.03 – 0.97 (m, 2H), 0.93 – 0.87 (m, 2H). Example 165: N-(5-(5-(((1S,4S,7R)-2-oxa-5-azabicyclo[2.2.1]heptan-7-yl)ox y)-2-methylpyridin- 4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. 4S,7R)-7-((4-(2-(cyclopropanecarboxamido)pyrazolo[1,5- a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)-2-oxa-5-azabicyclo [2.2.1]heptane-5-carboxylate. To a 40 mL vial, was charged NaH (60% dispersion in mineral oil) (96.6 mg, 2.42 mmol) and DMA (1.9 mL) followed by tert-butyl (1S,4S,7R)-7-hydroxy-2-oxa-5-azabicyclo[2.2.1]heptane-5- carboxylate (260 mg, 1.21 mmol). The resulting suspension was heated to 50 °C for 5 min to promote full deprotonation. Intermediate 6 (150 mg, 0.483 mmol) was added in a single portion. The reaction was stirred 6 hours at 50-90 °C until >90% conversion was achieved. The reaction was cooled to room temperature at which point the reaction mixture was quenched into stirring water (20 mL). The organics were extracted into ethyl acetate, washed with saturated sodium 213

chloride, dried (Na2SO4) then concentrated to dryness. The residue was purified by flash column chromatography (25-100% EtOAc in hexanes) to afford the title compound. Step B: N-(5-(5-(((1S,4S,7R)-2-oxa-5-azabicyclo[2.2.1]heptan-7-yl)ox y)-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanec arboxamide. To a vial containing a solution of tert-butyl (1S,4S,7R)-7-((4-(2-(cyclopropanecarboxamido)pyrazolo[1,5-a] pyridin- 5-yl)-6-methylpyridin-3-yl)oxy)-2-oxa-5-azabicyclo[2.2.1]hep tane-5-carboxylate (120 mg, 0.24 mmol) in DCE (1.9 mL) was added trifluoracetic acid (0.37 mL, 4.8 mmol) at 23 °C and after 20 minutes the solvent was removed in vacuo. The residue was diluted with dichloromethane (6 mL) followed by saturated aq. K2CO3 (3 mL). The layers were separated and the aqueous was extracted with 20% methanol/dichloromethane (3 x 10 mL). The combined organics were dried with Na2SO4, filtered and concentrated in vacuo. The residue was purified by flash column chromatography (0-25% 2 N NH3/methanol in dichloromethane) and the fractions containing product were combined and concentrated to afford the title compound (120 mg, 49%). MS (ESI): mass calcd. for C ₂₂ H ₂₃ N ₅ O ₃ , 405.2; m/z found, 406.2 [M+H] ⁺ . ¹ H NMR (500 MHz, CD3OD) δ 8.42 – 8.38 (m, 2H), 7.77 – 7.74 (m, 1H), 7.39 (s, 1H), 7.04 (dd, J = 7.2, 2.0 Hz, 1H), 6.90 (s, 1H), 4.87 (d, J = 2.4 Hz, 1H), 4.35 – 4.32 (m, 1H), 4.02 (dd, J = 7.8, 2.0 Hz, 1H), 3.87 (d, J = 7.8 Hz, 1H), 3.54 (t, J = 2.2 Hz, 1H), 3.13 (dd, J = 11.1, 1.7 Hz, 1H), 3.01 – 2.94 (m, 1H), 2.54 (s, 3H), 1.90 – 1.82 (m, 1H), 1.02 – 0.96 (m, 2H), 0.93 – 0.87 (m, 2H). Example 166: N-[5-[2-methyl-5-[[(2R)-morpholin-2-yl]methoxy]-4-pyridyl]py razolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. ining tert-butyl (R)-2-(hydroxymethyl)morpholine-4-carboxylate (210 mg, 0.967 mmol) was added HCl (4M in dioxane) (0.806 mL, 4 M, 3.222 mmol). The reaction was stirred for 2h. The reaction mixture was concentrated to dryness. The solid was pumped under vacuo for 1h. Then, the solid was dissolved with DMA (1.289 mL, 0.25 M, 0.322 214

mmol). To the solution was added NaH (60% dispersion in mineral oil) (129 mg, 3.22 mmol) and stirred for 5 min. To this mixture was then added N-(5-(5-fluoro-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (Intermediate 6, 100 mg, 0.322 mmol). The reaction was stirred at 90 °C overnight. The crude reaction mixture was diluted with EtOAc and washed with brine 3x. The organics were collected, dried over MgSO4, filtered, and concentrated under reduced pressure. The product was absorbed onto silica gel and purified by FCC with 3-10% of 2M NH ₃ in MeOH-DCM to afford the title compound (50 mg, 38%). MS (ESI): mass calcd. for C22H25N5O3, 407.2; m/z found, 408.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.29 (d, J = 12.1 Hz, 3H), 7.72 (dd, J = 2.0, 0.9 Hz, 1H), 7.19 (s, 1H), 6.99 (dd, J = 7.2, 2.0 Hz, 2H), 4.12 (t, J = 4.9 Hz, 1H), 4.05 (dd, J = 9.9, 4.8 Hz, 1H), 3.94 (d, J = 11.4 Hz, 1H), 3.91 – 3.84 (m, 1H), 3.74 – 3.66 (m, 1H), 2.98 (dd, J = 12.1, 2.4 Hz, 1H), 2.92 – 2.85 (m, 2H), 2.76 (dd, J = 12.1, 10.4 Hz, 1H), 2.58 (s, 3H), 1.20 – 1.12 (m, 2H), 0.98 – 0.90 (m, 2H). Example 167: N-[5-[5-[[(2S)-5,5-dimethylmorpholin-2-yl]methoxy]-2-methyl- 4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 6 mg, 54%) was prepared as described in Example 166 where tert- butyl (S)-2-(hydroxymethyl)-5,5-dimethylmorpholine-4-carboxylate was used instead of tert- butyl (R)-2-(hydroxymethyl)morpholine-4-carboxylate. MS (ESI): mass calcd. for C ₂₄ H ₂₉ N ₅ O ₃ , 435.2; m/z found, 436.3 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.25 (d, J = 6.7 Hz, 3H), 7.68 (dd, J = 2.0, 0.9 Hz, 1H), 7.17 (s, 1H), 7.01 – 6.91 (m, 2H), 4.17 – 4.04 (m, 2H), 3.69 (ddd, J = 10.3, 7.8, 4.7 Hz, 1H), 3.59 (d, J = 11.1 Hz, 1H), 3.30 (d, J = 11.1 Hz, 1H), 3.00 (dd, J = 12.8, 10.8 Hz, 1H), 2.76 (dd, J = 12.8, 2.9 Hz, 1H), 2.55 (s, 3H), 1.57 (s, 1H), 1.21 (s, 3H), 1.18 – 1.11 (m, 2H), 1.01 (s, 3H), 0.92 (dt, J = 7.8, 3.5 Hz, 2H). 215

Example 168: N-[5-[2-methyl-5-[[(2S,5R)-5-methylmorpholin-2-yl]methoxy]-4 - pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 6 mg, 37%) was prepared as described in Example 165 where tert- butyl (2S,5R)-2-(hydroxymethyl)-5-methylmorpholine-4-carboxylate was used instead of used instead of tert-butyl (1S,4S,7R)-7-hydroxy-2-oxa-5-azabicyclo[2.2.1]heptane-5-carb oxylate. MS (ESI): mass calcd. for C23H27N5O3, 421.2; m/z found, 422.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.08 (s, 1H), 8.55 (d, J = 7.2 Hz, 1H), 8.37 (s, 1H), 7.87 (dd, J = 2.0, 0.9 Hz, 1H), 7.36 (s, 1H), 7.08 (dd, J = 7.2, 2.0 Hz, 1H), 6.88 (s, 1H), 4.36 – 4.21 (m, 2H), 3.81 – 3.71 (m, 1H), 3.51 (dd, J = 11.0, 3.2 Hz, 1H), 3.38 (dd, J = 11.0, 5.6 Hz, 1H), 2.89 – 2.66 (br s, 3H), 2.47 (s, 3H), 2.36 – 2.14 (m, 1H), 1.99 – 1.88 (m, 1H), 0.98 (d, J = 6.6 Hz, 3H), 0.88 – 0.77 (m, 4H). Example 169: N-[5-[5-[(3-fluoro-1-methyl-azetidin-3-yl)methoxy]-2-methyl- 4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 3 mg, 25%) was prepared as described in Example 164 where (3- fluoroazetidin-3-yl)methanol was used instead of tert-butyl (1S,4S,7R)-7-hydroxy-2-oxa-5- azabicyclo[2.2.1]heptane-5-carboxylate. MS (ESI): mass calcd. for C22H24FN5O2, 409.2; m/z found, 410.3 [M+H] ⁺ . ¹ H NMR (600 MHz, DMSO-d6) δ 11.07 (s, 1H), 8.56 (d, J = 7.2 Hz, 1H), 8.38 (s, 1H), 7.82 (d, J = 1.9 Hz, 1H), 7.38 (s, 1H), 7.03 (dd, J = 7.2, 1.9 Hz, 1H), 6.87 (s, 1H), 4.43 (d, J = 23.9 Hz, 2H), 3.52 – 3.43 (m, 2H), 3.13 – 3.04 (m, 2H), 2.47 (s, 3H), 2.28 (s, 3H), 1.98 – 1.90 (m, 1H), 0.86 – 0.79 (m, 4H). 216

Example 170: trans-N-[5-[5-(3-aminocyclobutoxy)-2-methyl-4-pyridyl]pyrazo lo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide. 7 mg, 30%) was prepared as described in Example 166 where tert- butyl ((1r,3r)-3-hydroxycyclobutyl)carbamate was used instead of tert-butyl (R)-2- (hydroxymethyl)morpholine-4-carboxylate. MS (ESI): mass calcd. for C21H23N5O2, 377.2; m/z found, 378.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.07 (s, 1H), 8.56 (dt, J = 7.3, 1.0 Hz, 1H), 8.06 (s, 1H), 7.81 (dd, J = 2.0, 0.9 Hz, 1H), 7.35 (s, 1H), 7.05 (dd, J = 7.3, 2.0 Hz, 1H), 6.89 (s, 1H), 4.97 (ddd, J = 10.5, 6.7, 4.1 Hz, 1H), 3.58 – 3.49 (m, 1H), 2.25 (ddd, J = 11.9, 7.7, 4.1 Hz, 2H), 2.18 – 2.04 (m, 2H), 1.96 – 1.81 (m, 2H), 0.89 – 0.70 (m, 4H). Example 171: cis-N-[5-[5-[(3-aminocyclobutyl)methoxy]-2-methyl-4-pyridyl] pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 8 mg, 20%) was prepared as described in Example 166 where tert- butyl ((1s,3s)-3-hydroxycyclobutyl)carbamate was used instead of tert-butyl (R)-2- (hydroxymethyl)morpholine-4-carboxylate. MS (ESI): mass calcd. for C22H25N5O2, 391.2; m/z found, 392.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.08 (s, 1H), 8.58 (dd, J = 7.2, 1.0 Hz, 1H), 8.30 (s, 1H), 7.87 – 7.79 (m, 1H), 7.35 (s, 1H), 7.04 (dd, J = 7.2, 2.0 Hz, 1H), 6.88 (s, 1H), 4.03 (d, J = 5.9 Hz, 2H), 3.15 (s, 1H), 2.46 (s, 3H), 2.20 (tt, J = 14.9, 8.0 Hz, 4H), 1.92 (td, J = 7.9, 7.4, 4.0 Hz, 1H), 1.73 (d, J = 10.0 Hz, 1H), 1.50 – 1.39 (m, 2H), 0.87 – 0.78 (m, 4H). 217

Example 172: 2-((5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)ox y)-2-methylpyridin- 4-yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-N-methylisonicotinam ide. 6%) was prepared as described in Example 116 steps A-B where 2-bromo-N-methylisonicotinamide was used instead of 4-bromo-1-(difluoromethyl)-1H- pyrazole in step A. MS (ESI): mass calcd. for C ₂₇ H ₂₉ N ₇ O ₃ , 499.2; m/z found, 500.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.00 (s, 1H), 8.60 (q, J = 4.4 Hz, 1H), 8.53 (d, J = 7.2 Hz, 1H), 8.32 (d, J = 5.2 Hz, 1H), 8.29 (s, 1H), 7.99 (s, 1H), 7.62 (s, 1H), 7.37 (s, 1H), 7.13 - 7.08 (m, 2H), 6.89 (s, 1H), 4.70 - 4.63 (m, 1H), 3.60 - 3.54 (m, 2H), 3.53 - 3.48 (m, 2H), 2.97 - 2.90 (m, 2H), 2.80 (d, J=4.4 Hz, 3H), 2.46 (s, 3H), 2.35 - 2.24 (m, 2H), 1.71 - 1.61 (m, 2H). Example 173: 6-((5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)ox y)-2-methylpyridin- 4-yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-N-methylnicotinamide . mg, 34%) was prepared as described in Example 116 steps A-B where 6-bromo-N-methylnicotinamide was used instead of 4-bromo-1-(difluoromethyl)-1H- pyrazole in step A. MS (ESI): mass calcd. for C ₂₇ H ₂₉ N ₇ O ₃ , 499.2; m/z found, 500.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.19 (s, 1H), 8.71 (d, J = 2.0 Hz, 1H), 8.55 (d, J = 7.2 Hz, 1H), 8.37 - 8.31 (m, 1H), 8.30 (s, 1H), 8.07 - 8.00 (m, 2H), 7.38 (s, 1H), 7.35 (d, J = 8.8 Hz, 1H), 7.12 218

(dd, J = 1.2, 6.8 Hz, 1H), 6.86 (s, 1H), 4.75 - 4.62 (m, 1H), 3.66 - 3.59 (m, 2H), 3.59 - 3.51 (m, 2H), 3.08 - 2.99 (m, 2H), 2.79 (d, J = 4.4 Hz, 3H), 2.46 (s, 3H), 2.38 - 2.28 (m, 2H), 1.79 - 1.68 (m, 2H). Example 174: N-(1-methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl)-5-(2-methyl -5-(((1R,5S,7s)-9- methyl-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)pyridin-4-yl) pyrazolo[1,5-a]pyridin-2-amine. p (10.5 mg, 3%) was prepared as described in Example 116, except 5- bromo-1-methyl-3-(trifluoromethyl)-1H-pyrazole was used instead of 4-bromo-1- (difluoromethyl)-1H-pyrazole in step A. MS (ESI): mass calcd. for C26H28N7O2F3, 527.2; m/z found, 528.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.31 (s, 1H), 8.53 (d, J = 7.2 Hz, 1H), 8.19 (s, 1H), 8.14 (s, 1H), 7.39 (s, 1H), 7.16 (dd, J = 2.0, 7.2 Hz, 1H), 6.74 (s, 1H), 6.10 (s, 1H), 4.76 - 4.64 (m, 1H), 3.90 - 3.72 (m, 5H), 3.56 - 3.48 (m, 2H), 2.66 - 2.60 (m, 2H), 2.45 (s, 3H), 2.43 - 2.35 (m, 5H), 1.72 - 1.57(m, 2H). ¹⁹ F NMR (376 MHz, DMSO-d6) δ -60.9 (s, 3F). Example 175: N-(5-(5-(((1s,3s)-3-aminocyclobutyl)methoxy)-2-cyanopyridin- 4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. prepared (70 mg, 6.5%) by the similar method of Example 8 by using tert-butyl ((cis)-3-(hydroxymethyl)cyclobutyl)carbamate instead of (2S,4R)-tert-butyl 4- 219

hydroxy-2-(trifluoromethyl)piperidine-1-carboxylate. MS (ESI): mass calcd. for C22H22N6O2, 402.2; m/z found, 403.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6, t=80 °C) δ 10.78 (s, 1H), 8.60 (s, 1H), 8.56 - 8.51 (m, 1H), 8.08 (s, 1H), 7.90 - 7.86 (m, 1H), 7.06 (dd, J=2.0, 7.2 Hz, 1H), 6.91 - 6.88 (m, 1H), 4.36 - 4.12 (m, 2H), 3.31 - 3.13 (m, 1H), 2.33 - 2.19 (m, 3H), 1.98 - 1.91 (m, 1H), 1.54 - 1.42 (m, 2H), 0.88 - 0.83 (m, 2H), 0.83 - 0.77 (m, 2H). Example 176: cis-N-[5-[2-cyano-5-[[3-(2-pyridylamino)cyclobutyl]methoxy]- 4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. prepared (3 mg, 1.2%) using the method described in Example 260 and using Example 175 instead of 1-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)-2-methylpropan-2-ol and using 2-bromopyridine instead of 6- chloroimidazo[1,2-b]pyridazine. MS (ESI): mass calcd. for C27H25N7O2, 479.2; m/z found, 480.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.14 (s, 1H), 8.66 (s, 1H), 8.61 (d, J = 7.2 Hz, 1H), 8.19 (s, 1H), 7.96 - 7.90 (m, 2H), 7.38 - 7.31 (m, 1H), 7.13 (dd, J = 2.0, 7.2 Hz, 1H), 6.94 (s, 1H), 6.61 (d, J = 6.8 Hz, 1H), 6.49 - 6.43 (m, 1H), 6.39 (d, J = 8.8 Hz, 1H), 4.30 (d, J = 4.8 Hz, 2H), 4.24 - 4.11 (m, 1H), 2.47 - 2.39 (m, 3H), 1.98 - 1.89 (m, 1H), 1.82 - 1.69 (m, 2H), 0.89 - 0.77 (m, 4H) Example 177: cis-N-[5-[2-cyano-5-[[3-[(1-methylpyrazol-3-yl)amino]cyclobu tyl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 220 epared (55 mg, 25%) using the method described in Example 260 and using Example 175 instead of 1-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)-2-methylpropan-2-ol and using 3-bromo-1-methyl-1H-pyrazole instead of 6-chloroimidazo[1,2-b]pyridazine. MS (ESI): mass calcd. for C26H26N8O2, 482.2; m/z found, 483.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.14 (s, 1H), 8.65 (s, 1H), 8.63 (d, J = 7.2 Hz, 1H), 8.19 (s, 1H), 7.92 (d, J = 1.2 Hz, 1H), 7.27 (d, J = 2.0 Hz, 1H), 7.12 (dd, J = 2.0, 7.2 Hz, 1H), 6.93 (s, 1H), 5.35 (d, J = 2.4 Hz, 1H), 5.15 (d, J = 8.4 Hz, 1H), 4.28 (d, J = 5.2 Hz, 2H), 3.81 - 3.70 (m, 1H), 3.58 (s, 3H), 2.44 - 2.34 (m, 3H), 1.97 - 1.89 (m, 1H), 1.73 - 1.61 (m, 2H), 0.87 - 0.78 (m, 4H). Example 178: rac-N-[5-[2-cyano-5-[[4-hydroxy-4-(trifluoromethyl)cyclohexy l]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. O N _N N ((4-oxocyclohexyl)methoxy)pyridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide. The title compound was prepared (297 mg, 33%) by the similar method of Example 8 by using 4-(hydroxymethyl)cyclohexanone instead of (2S,4R)- tert-butyl 4-hydroxy-2-(trifluoromethyl)piperidine-1-carboxylate. ¹ H NMR (400 MHz, DMSO- d6) δ 11.10 (s, 1H), 8.66 (s, 1H), 8.59 (d, J = 7.2 Hz, 1H), 8.15 (s, 1H), 7.90 - 7.84 (m, 1H), 7.06 (dd, J = 2.0, 7.2 Hz, 1H), 6.89 (s, 1H), 4.24 (d, J = 6.8 Hz, 2H), 2.43 - 2.24 (m, 3H), 2.23 - 2.12 (m, 2H), 2.06 - 1.97 (m, 2H), 1.95 - 1.85 (m, 1H), 1.55 - 1.38 (m, 2H), 0.86 - 0.75 (m, 4H). 221

Step B: rac-N-[5-[2-cyano-5-[[4-hydroxy-4-(trifluoromethyl)cyclohexy l]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. Trimethyl(trifluoromethyl)silane (120 mg, 0.84 mmol) was added to a solution consisting of N-(5-(2-cyano-5-((4- oxocyclohexyl)methoxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide (2900 mg, 0.68 mmol) and THF (10 mL) cooled to 0°C. Tetrabutylammonium fluoride (3.4 mL, 3.4 mmol was then added and the vial was removed from the ice bath and contents were allowed to warm to 23 °C over 2 h. Contents were then treated with aqueous 1N HCl (5 mL) and stirred at 23 °C for 16 h. The reactant mixture was poured into water (40 mL) and extracted with ethyl acetate (50 mL x 3). The organic extracts were washed with brine (20 mL x 3), dried over anhydrous Na ₂ SO ₄ , filtered, and concentrated to dryness under reduced pressure to obtain the crude product, which was purified by FCC (eluent: petroleum ether : ethylacetate = 1:0 to 0:1) to afford the product which was purified further by SFC over DAICEL DAICEL CHIRALPAK AD 250 mm x 30 mm, 10 µm (eluent: 50% to 50% (v/v) 0.1% NH ₃ H ₂ O IPA). The pure fractions were collected and the volatiles were removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/acetone, and then lyophilized to dryness to afford the title compound (34.70 mg, 10%) as a white solid. MS (ESI): mass calcd. for C25H24F3N5O3, 499.2; m/z found, 500.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.15 (s, 1H), 8.73 (s, 1H), 8.62 (d, J = 7.2 Hz, 1H), 8.17 (s, 1H), 7.90 (d, J = 1.2 Hz, 1H), 7.08 (dd, J = 2.0, 7.2 Hz, 1H), 6.91 (s, 1H), 5.73 (br. s., 1H), 4.29 (d, J = 7.6 Hz, 2H), 2.14 - 2.04 (m, 1H), 1.98 - 1.89 (m, 1H), 1.83 - 1.71 (m, 4H), 1.57 - 1.48 (m, 4H), 0.86 - 0.79 (m, 4H). ¹⁹ F NMR (376 MHz, DMSO-d ₆ ) -81.50 (s, 3F). Example 179: cis-N-(5-(5-(((1*S,3*R)-3-hydroxycyclopentyl)oxy)-2-methylpy ridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. 2

The title compound was prepared as the racemate (140 mg, 40%) by the similar method of Example 8 by using (1R,3S)-cyclopentane-1,3-diol instead of tert-butyl (2S,4R)-4-hydroxy-2- (trifluoromethyl)piperidine-1-carboxylate and using Intermediate 6 instead of Intermediate 4. N- (5-(5-(((1S,3R)-3-hydroxycyclopentyl)oxy)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide (140 mg, 0.319 mmol) was purified by supercritical fluid chromatography over DAICEL CHIRALPAK IC (250 mm x 30 mm x 10 um) (eluent: supercritical CO ₂ in EtOH (0.1% v/v ammonia). The pure fractions were collected and the volatiles were removed under vacuum. The resulting product was lyophilized to dryness to remove the solvent residue completely. The first eluting fraction (53 mg) was purified further by supercritical fluid chromatography over DAICEL CHIRALPAK AD (250 mm x 30 mm x 10 um) (eluent: supercritical CO2 in EtOH (0.1% v/v ammonia) 50/50, v/v). The pure fractions were collected and the volatiles were removed under vacuum. The resulting product was lyophilized to dryness to remove the solvent residue completely. The title compund (39.5 mg) was obtained as a yellow solid. MS (ESI): mass calcd. for C ₂₂ H ₂₄ N ₄ O ₃ , 392.2; m/z found, 393.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.10 (s, 1H), 8.54 (d, J = 7.2 Hz, 1H), 8.25 (s, 1H), 7.92 (d, J = 1.2 Hz, 1H), 7.35 (s, 1H), 7.12 (dd, J = 2.0, 7.2 Hz, 1H), 6.88 (s, 1H), 4.92 - 4.83 (m, 1H), 4.69 (d, J = 4.0 Hz, 1H), 4.19 - 4.08 (m, 1H), 2.45 (s, 3H), 2.32 - 2.22 (m, 1H), 1.99 - 1.89 (m, 2H), 1.88 - 1.71 (m, 2H), 1.69 - 1.58 (m, 2H), 0.87 - 0.77 (m, 4H). Example 180: cis-N-(5-(5-(((1*R,3*S)-3-hydroxycyclopentyl)oxy)-2-methylpy ridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. ction from Example 179 (55 mg) was purified by supercritical fluid chromatography over DAICEL CHIRALPAK AS-H (250 mm x 30 mm x 5 um) (eluent: supercritical CO2 in EtOH (0.1% v/v ammonia) 50/50, v/v). The pure fractions were collected 223

and the volatiles were removed under vacuum. The resulting product was lyophilized to dryness to remove the solvent residue completely. The title compound (42 mg) was obtained as a yellow solid. MS (ESI): mass calcd. for C ₂₂ H ₂₄ N ₄ O ₃ , 392.2; m/z found, 393.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.09 (s, 1H), 8.54 (d, J = 7.2 Hz, 1H), 8.25 (s, 1H), 7.92 (d, J = 1.2 Hz, 1H), 7.35 (s, 1H), 7.12 (dd, J = 2.0, 7.2 Hz, 1H), 6.88 (s, 1H), 4.94 - 4.82 (m, 1H), 4.68 (d, J = 3.6 Hz, 1H), 4.22 - 4.03 (m, 1H), 2.45 (s, 3H), 2.32 - 2.23 (m, 1H), 2.00 - 1.89 (m, 2H), 1.88 - 1.71 (m, 2H), 1.70 - 1.58 (m, 2H), 0.87 - 0.74 (m, 4H). Example 181: trans-4-[[6-methyl-4-[2-[(1-methylpyrazol-3-yl)amino]pyrazol o[1,5-a]pyridin-5- yl]-3-pyridyl]oxy]cyclohexanol. as prepared (33 mg, 30%) using the method described in Example 260 and using Intermediate 12 instead of 1-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)-2-methylpropan-2-ol and using 3-bromo-1-methyl-1H-pyrazole instead of 6-chloroimidazo[1,2-b]pyridazine. MS (ESI): mass calcd. for C23H26N6O2, 418.2; m/z found, 419.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.05 (s, 1H), 8.43 (d, J = 7.1 Hz, 1H), 8.33 (s, 1H), 7.66 – 7.61 (m, 1H), 7.49 (d, J = 2.2 Hz, 1H), 7.31 (s, 1H), 6.85 (dd, J = 7.1, 2.0 Hz, 1H), 6.41 (s, 1H), 6.05 (d, J = 2.2 Hz, 1H), 4.50 (d, J = 3.7 Hz, 1H), 4.39 (dt, J = 8.9, 4.9 Hz, 1H), 3.73 (s, 3H), 3.57 – 3.43 (m, 1H), 2.45 (s, 3H), 2.01 – 1.91 (m, 2H), 1.74 (d, J = 13.1 Hz, 2H), 1.47 – 1.34 (m, 2H), 1.33 – 1.21 (m, 2H). Example 182: trans-4-[[6-methyl-4-[2-(2-pyridylamino)pyrazolo[1,5-a]pyrid in-5-yl]-3- pyridyl]oxy]cyclohexanol. 224 was prepared (65 mg, 26%) using the method described in Example 260 and using Intermediate 12 instead of 1-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)-2-methylpropan-2-ol and using 2-bromopyridine instead of 6- chloroimidazo[1,2-b]pyridazine and using Pd2dba3/Xantphos instead of t-BuBrettPhos-Pd-G3. MS (ESI): mass calcd. for C ₂₄ H ₂₅ N ₅ O ₂ , 415.2; m/z found, 416.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.77 (s, 1H), 8.52 (dt, J = 7.2, 0.9 Hz, 1H), 8.35 (s, 1H), 8.21 (ddd, J = 5.0, 2.0, 0.8 Hz, 1H), 7.74 (dd, J = 2.0, 0.9 Hz, 1H), 7.62 (ddd, J = 8.5, 7.2, 2.0 Hz, 1H), 7.35 – 7.26 (m, 2H), 6.94 (dd, J = 7.2, 2.0 Hz, 1H), 6.86 (d, J = 0.9 Hz, 1H), 6.80 (ddd, J = 7.1, 4.9, 1.0 Hz, 1H), 4.50 (d, J = 4.0 Hz, 1H), 4.41 (dt, J = 8.8, 4.7 Hz, 1H), 3.49 (dq, J = 8.7, 4.4 Hz, 1H), 2.45 (s, 3H), 2.03 – 1.91 (m, 2H), 1.74 (d, J = 12.4 Hz, 2H), 1.49 – 1.35 (m, 2H), 1.34 – 1.21 (m, 2H). Example 183: trans-N-(5-(5-(((1*S,3*S)-3-hydroxycyclopentyl)oxy)-2-methyl pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. O N _N repared as the racemate (95 mg, 24%) by the similar method of Example 8 by using (1S,3S)-cyclopentane-1,3-diol instead of (2S,4R)-tert-butyl 4-hydroxy-2- (trifluoromethyl)piperidine-1-carboxylate and using Intermediate 6 instead of Intermediate 4. N- (5-(5-(((1S,3S)-3-hydroxycyclopentyl)oxy)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide (95 mg, 0.24 mmol) was purified by supercritical fluid 225

chromatography over DAICEL CHIRALPAK AD (250 mm x 30 mm x 10 um) (eluent: supercritical CO2 in EtOH (0.1% v/v ammonia) 50/50, v/v). The pure fractions were collected and the volatiles were removed under vacuum. The resulting product was lyophilized to dryness to remove the solvent residue completely to afford the title compound (16.8 mg) as a yellow solid. MS (ESI): mass calcd. for C22H24N4O3, 392.2; m/z found, 393.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.10 (s, 1H), 8.56 (d, J = 7.2 Hz, 1H), 8.27 (s, 1H), 7.77 (s, 1H), 7.34 (s, 1H), 7.00 (dd, J = 1.6, 7.2 Hz, 1H), 6.89 (s, 1H), 5.05 - 4.94 (m, 1H), 4.62 (d, J = 2.8 Hz, 1H), 4.25 - 4.14 (m, 1H), 2.45 (s, 3H), 2.19 - 2.06 (m, 1H), 2.00 - 1.87 (m, 3H), 1.86 - 1.76 (m, 1H), 1.72 - 1.62 (m, 1H), 1.54 - 1.43 (m, 1H), 0.90 - 0.77 (m, 4H). Example 184: cis-4-[[6-methyl-4-[2-[(1-methylpyrazol-3-yl)amino]pyrazolo[ 1,5-a]pyridin-5- yl]-3-pyridyl]oxy]cyclohexanol. as prepared (8.3 mg, 17%) using the method described in Example 260 and using Intermediate 12 instead of 1-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)-2-methylpropan-2-ol and using 3-bromo-1-methyl-1H-pyrazole instead of 6-chloroimidazo[1,2-b]pyridazine. MS (ESI): mass calcd. for C ₂₃ H ₂₆ N ₆ O ₂ , 418.2; m/z found, 419.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.05 (s, 1H), 8.44 (dt, J = 7.2, 0.9 Hz, 1H), 8.31 (s, 1H), 7.67 (dd, J = 2.0, 0.9 Hz, 1H), 7.48 (d, J = 2.2 Hz, 1H), 7.32 (s, 1H), 6.89 (dd, J = 7.2, 2.0 Hz, 1H), 6.41 (d, J = 0.9 Hz, 1H), 6.06 (d, J = 2.2 Hz, 1H), 4.48 (s, 1H), 4.44 (d, J = 3.8 Hz, 1H), 3.73 (s, 3H), 2.45 (s, 3H), 1.88 – 1.77 (m, 2H), 1.65 – 1.40 (m, 6H). Example 185: trans-N-[5-[5-(4-hydroxycyclohexoxy)-2-prop-1-ynyl-4-pyridyl ]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 226

repared (10 mg, 6.5%) by the similar method of Example 1 using Intermediate 11 instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide and trans-(1r,4r)-cyclohexane-1,4-diol instead of (R)-(1- methylpyrrolidin-3-yl)methanol. MS (ESI): mass calcd. for C25H26N4O3, 430.2; m/z found, 431.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.08 (s, 1H), 8.54 (d, J = 7.3 Hz, 1H), 8.45 (s, 1H), 7.82 (dd, J = 2.0, 0.9 Hz, 1H), 7.51 (s, 1H), 7.03 (dd, J = 7.2, 2.0 Hz, 1H), 6.93 – 6.84 (m, 1H), 4.57 (ddd, J = 19.6, 10.0, 4.1 Hz, 2H), 2.06 (s, 3H), 2.04 – 1.95 (m, 3H), 1.79 – 1.67 (m, 2H), 1.50 – 1.38 (m, 2H), 1.38 – 1.26 (m, 2H), 0.88 – 0.75 (m, 4H). Example 186: N-[5-[2-methyl-5-(4-oxocyclohexoxy)-4-pyridyl]pyrazolo[1,5-a ]pyridin-2- yl]cyclopropanecarboxamide. dioxaspiro[4.5]decan-8-yl)oxy)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. The title compound was prepared (1700 mg) by the similar method of Example 1 using Intermediate 6 instead of N-(5-(5-chloro-2- cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropaneca rboxamide and 1,4- dioxaspiro[4.5]decan-8-ol instead of (R)-(1-methylpyrrolidin-3-yl)methanol. ¹ H NMR (400MHz, DMSO-d6) δ 11.11 (s, 1H), 8.57 (d, J=7.2 Hz, 1H), 8.37 (s, 1H), 7.81 (s, 1H), 7.35 (s, 227

1H), 7.03 (dd, J=1.8, 7.2 Hz, 1H), 6.88 (s, 1H), 4.63 - 4.57 (m, 1H), 3.91 - 3.71 (m, 4H), 2.45 (s, 3H), 1.95 - 1.88 (m, 1H), 1.85 - 1.68 (m, 4H), 1.62 - 1.44 (m, 4H), 0.87 - 0.75 (m, 4H). Step B: N-[5-[2-methyl-5-(4-oxocyclohexoxy)-4-pyridyl]pyrazolo[1,5-a ]pyridin-2- yl]cyclopropanecarboxamide. To a mixture solution consisting of N-(5-(5-(1,4- dioxaspiro[4.5]decan-8-yloxy)-2-methylpyridin-4-yl)pyrazolo[ 1,5-a]pyridin-2- yl)cyclopropanecarboxamide (100 mg, 0.223 mmol) and CH ₂ Cl ₂ (5 mL) was added FeCl ₃ ^.· 6H ₂ O (362 mg, 1.34 mmol) at 25 °C. The reaction mixture was stirred at room-temperature for 12 hrs. The reaction mixture was diluted with 50 mL EtOAc, adjusted to pH 8 with aqueous NaHCO3 and filtered through a pad of Celite® and the pad was washed with EtOAc (10 mL x 2). The organic layer was separated and concentrated to dryness under reduced pressure to give the crude product. The crude product was purified by preparative HPLC using a Xtimate C18250 x 50 mm x 10 µm column (eluent: 30% to 60% (v/v) CH3CN and H2O with 0.04% NH3 and 10 mM NH ₄ HCO ₃ ) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (50 mg, 55%) as a white solid. MS (ESI): mass calcd. for C23H24N4O3, 404.2; m/z found, 405.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.10 (s, 1H), 8.57 (d, J = 7.2 Hz, 1H), 8.47 (s, 1H), 7.83 (s, 1H), 7.38 (s, 1H), 7.07 (dd, J = 2.0, 7.2 Hz, 1H), 6.90 (s, 1H), 4.87 - 4.82 (m, 1H), 2.48 (s, 3H), 2.36 - 2.27 (m, 2H), 2.26 - 2.17 (m, 2H), 2.13 - 1.99 (m, 4H), 1.98 - 1.85 (m, 1H), 0.90 - 0.75 (m, 4H). Example 187: trans-4-[[4-[2-[(1-methylpyrazol-3-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-prop- 1-ynyl-3-pyridyl]oxy]cyclohexanol. pared (8.1 mg, 6.3%) by the similar method of Example 1 using trans-(1r,4r)-cyclohexane-1,4-diol instead of (R)-(1-methylpyrrolidin-3-yl)methanol and 228

Intermediate 19 instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide. MS (ESI): mass calcd. for C25H26N6O2, 442.2; m/z found, 443.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.06 (s, 1H), 8.42 (d, J = 7.8 Hz, 2H), 7.67 (dd, J = 1.9, 0.9 Hz, 1H), 7.48 (d, J = 4.2 Hz, 2H), 6.86 (dd, J = 7.2, 2.0 Hz, 1H), 6.42 (d, J = 0.8 Hz, 1H), 6.04 (d, J = 2.2 Hz, 1H), 4.62 – 4.48 (m, 2H), 3.73 (s, 3H), 3.51 (s, 1H), 2.06 (s, 2H), 2.04 – 1.95 (m, 2H), 1.74 (d, J = 12.2 Hz, 2H), 1.44 (q, J = 9.6 Hz, 2H), 1.32 (q, J = 9.0 Hz, 2H). Example 188: rac-N-[5-[5-[(4,4-difluoro-1-hydroxy-cyclohexyl)methoxy]-2-m ethyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. iate 7 (100 mg, 0.324 mmol), 4,4-difluoro-(1- hydroxycyclohexyl)methyl 4-methylbenzenesulfonate (200 mg, 0.624 mmol), Cs2CO3 (317 mg, 0.973 mmol) and DMF (5 mL) was stirred at 70 °C for 16 h. The reactant mixture was purified by preparative HPLC using a Boston Green ODS 150 x 30 mm x 5 µm column (eluent: 30% to 60% (v/v) CH ₃ CN and H ₂ O with 0.04% NH ₃ ) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/acetone, and then lyophilized to dryness to afford the title compound (12.1 mg, 8%) as a yellow solid. MS (ESI): mass calcd. for C24H26F2N4O3, 456.2; m/z found, 457.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.08 (s, 1H), 8.53 (d, J = 7.2 Hz, 1H), 8.33 (s, 1H), 7.88 (d, J = 1.2 Hz, 1H), 7.37 (s, 1H), 7.09 (dd, J = 2.0, 7.2 Hz, 1H), 6.87 (s, 1H), 4.85 (s, 1H), 3.97 (s, 2H), 2.46 (s, 3H), 2.14 - 1.80 (m, 5H), 1.74 - 1.63 (m, 4H), 0.89 - 0.77 (m, 4H). ¹⁹ F NMR (376 MHz, DMSO-d6) δ -89.91 (d, J = 234.2 Hz, 1F), -101.75 (d, J = 231.6 Hz, 1F). Example 189: (*R)-N-(5-(2-methyl-5-(3,3,3-trifluoro-2-hydroxy-2-methylpro poxy)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. 229

as prepared as described in Example 193, Step B, and using 2- methyl-2-(trifluoromethyl)oxirane instead of 2-cyclopropyl-2-methyloxirane. N-(5-(2-methyl-5- (3,3,3-trifluoro-2-hydroxy-2-methylpropoxy)pyridin-4-yl)pyra zolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide (40 mg, 0.092 mmol) was further purified by SFC over Phenomenex-Cellulose-2 (250mm x 30mm,10um), (eluent: 45% to 45% (v/v) supercritical CO ₂ in EtOH and H ₂ O with 0.1% NH ₃ ). The pure fractions were collected and the volatiles were removed under reduced pressure. The products were suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (13.9 mg, 33%). MS (ESI): mass calcd. for C ₂₁ H ₂₁ F ₃ N ₄ O ₃ , 434.2; m/z found, 435.0 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.47 (s, 1H), 8.26 (s, 1H), 8.19 (d, J = 7.2 Hz, 1H), 7.60 (d, J = 1.2 Hz, 1H), 7.19 (s, 1H), 6.92 (s, 1H), 6.84 (dd, J = 1.6, 7.2 Hz, 1H), 4.32 (d, J = 9.6 Hz, 1H), 4.10 (d, J = 9.6 Hz, 1H), 2.56 (s, 3H), 1.48 (s, 3H), 1.41 - 1.37 (m, 1H), 1.41 (d, J = 5.2 Hz, 1H), 1.10 - 1.02 (m, 2H), 0.85 - 0.75 (m, 2H). ¹⁹ F NMR (376 MHz, CDCl3) δ -80.52 (s, 3F). Example 190: (*S)-N-(5-(2-methyl-5-(3,3,3-trifluoro-2-hydroxy-2-methylpro poxy)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. 2.8 mg, 30%) was prepared as described in Example 189 and is the other isomer from the SFC purification. MS (ESI): mass calcd. for C ₂₁ H ₂₁ F ₃ N ₄ O ₃ , 434.2; m/z 230

found, 435.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.45 (s, 1H), 8.32 (s, 1H), 8.21 (d, J=7.6 Hz, 1H), 7.63 - 7.57 (m, 1H), 7.23 (s, 1H), 6.94 (s, 1H), 6.86 (dd, J=1.6, 7.2 Hz, 1H), 4.32 (d, J=10.0 Hz, 1H), 4.12 (d, J=9.6 Hz, 1H), 2.59 (s, 3H), 1.47 (s, 3H), 1.45 - 1.40 (m, 1H), 1.11 - 1.03 (m, 2H), 0.87 - 0.79 (m, 2H). ¹⁹ F NMR (376 MHz, CDCl ₃ ) δ -80.50 (s, 3F). Example 191: N-(5-(5-(((1r,4r)-4-hydroxy-4-(trifluoromethyl)cyclohexyl)ox y)-2-methylpyridin- 4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. (trifluoromethyl)-1,4-dioxaspiro[4.5]decan-8-yl)oxy)silane. To a mixture of 1,4-dioxaspiro[4.5]decan-8-one (3.00 g, 19.2 mmol) and CsF (5.84 g, 38.4 mmol) in THF (30.0 mL) was added a solution of trimethyl(trifluoromethyl)silane (4.10 g, 28.8 mmol) and THF (15.0 mL) at 0 °C. The reaction mixture was allowed to warm to 15 °C and the reaction mixture was stirred at that temperature for 14 h. The reaction mixture was filtered, and the filtrate concentrated under reduced pressure to afford the crude, which was purified by FCC (petroleum ether: ethyl acetate =0 to 10:1) to afford the title compound (4.3 g, 75% yield) as a colorless oil. Step B: 4-Hydroxy-4-(trifluoromethyl)cyclohexan-1-one. To a mixture of trimethyl((8- (trifluoromethyl)-1,4-dioxaspiro[4.5]decan-8-yl)oxy)silane (1.00 g, 3.35 mmol) and THF (5 mL) was added HCl (5 mL, 5 mmol, 1 M) at 10-15 °C. The reaction mixture was stirred at 10-15 °C for 18 hrs. The reaction mixture was extracted with ethyl acetate (3 x 10 mL). The combined organic layers were dried over sodium sulfate, filtered and concentrated under reduced pressure to afford the crude, which was purified by FCC (petroleum ether: ethyl acetate =0 to 3:1) to give the title compound (0.6 g, 98% yield) as a colorless oil. 231

Step C: 1-(Trifluoromethyl)cyclohexane-1,4-diol. To a mixture of 4-hydroxy-4- (trifluoromethyl)cyclohexan-1-one (600 mg, 3.29 mmol) and MeOH (10.0 mL) was added NaBH ₄ (250 mg, 6.59 mmol) at 10-15 °C. The reaction mixture was stirred at 10-15 °C for 1 h. The reaction mixture was quenched with water (10 mL) and concentrated under reduced pressure. The mixture was extracted with ethyl acetate (3 x 10 mL). The combined organic layers were dried over sodium sulfate, filtered and concentrated under reduced pressure to afford the crude, which was purified by FCC (petroleum ether: ethyl acetate = 1:0 to 0:1) to give the title compound (0.4 g, 66% yield) as a white solid . Step D: 4-Hydroxy-4-(trifluoromethyl)cyclohexyl 4-methylbenzenesulfonate. To a mixture consisting of 1-(trifluoromethyl)cyclohexane-1,4-diol (400 mg,2.17 mmol) and DCM (5 mL) was added TEA (440 mg, 4.34 mmol) and a solution consisting of p-toluenesulfonyl chloride (414 mg, 2.17 mmol) in DCM (5 mL) at 25 °C. The mixture was stirred at 25 °C for 13 hrs. N,N-dimethylpyridin-4-amine (440 mg, 4.34 mmol) was added and the mixture was stirred at 10-15 °C for 4 hrs. The reaction mixture was purified by FCC (petroleum ether: ethyl acetate =1:0 to 3:2) to afford the title compound (120 mg, 16% yield) as a white solid. Step E: N-(5-(5-(((1r,4r)-4-hydroxy-4-(trifluoromethyl)cyclohexyl)ox y)-2-methylpyridin- 4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. To a mixture of N-(5-(5-hydroxy-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanec arboxamide (Intermediate 7, 100 mg, 0.324 mmol) and 4-hydroxy-4-(trifluoromethyl)cyclohexyl 4-methylbenzenesulfonate (110 mg, 0.324 mmol) in DMF (5.0 mL) was added cesium carbonate (317 mg, 0.973 mmol). The reaction mixture was stirred at 75 °C for 2 hrs, then worked-up by dilution with ethyl acetate (20 mL), filtration, and concentration under reduced pressure. The crude product was purified by preparative HPLC using a Boston Green ODS 150 x 30 mm x 5 µm column (eluent: 35% to 65 (v/v) CH3CN and H2O with 0.04% NH3 and 10 mM NH4HCO3) and lyophilized to afford the title compound (9.4 mg, 6.1 %) as a white solid. MS (ESI): mass calcd. for C24H25F3N4O3, 474.2; m/z found, 475.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.10 (s, 1H), 8.54 (d, J = 7.2 Hz, 1H), 8.39 (s, 1H), 7.77 (s, 1H), 7.35 (s, 1H), 7.00 (dd, J = 1.6, 7.2 Hz, 1H), 6.85 (s, 1H), 5.76 (s, 1H), 4.82 (s, 1H), 2.46 (s, 3H), 1.99 - 1.87 (m, 1H), 1.87 - 1.70 (m, 4H), 1.59 - 1.49 (m, 2H), 1.49 - 1.37 (m, 2H), 0.93 - 0.72 (m, 4H). ¹⁹ F NMR (376 MHz, DMSO-d6) δ -83.51 (s, 3H). 232

Example 192: N-(5-(5-(((1r,1r)-4-hydroxy-4-phenylcyclohexyl)oxy)-2-methyl pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. dioxaspiro[4.5]decan-8-ol. To a solution of 1,4- dioxaspiro[4.5]decan-8-one (1.00 g, 6.40 mmol) in THF (20 mL) was added PhMgBr (3.201 g, 9.604 mmol) at 0°C. The reaction mixture was stirred at 20°C for 16 hours. The reaction mixture was poured into saturated ammonium chloride (40 mL) and extracted with ethyl acetate (15 mL x 3). The combined organic extracts were washed with brine (40 mL), dried over anhydrous sodium sulfate, filtered, and concentrated to dryness under reduced pressure to give crude product, which was purified by FCC (eluent: petroleum ether: ethyl acetate = 5:1 to 2:1) to afford the title compound (480 mg, 32 %) as a light yellow solid. Step B: 4-Hydroxy-4-phenylcyclohexan-1-one. To a solution of 8-phenyl-1,4- dioxaspiro[4.5]decan-8-ol (300 mg, 1.28 mmol) in THF (3 mL) was added HCl (3 mL,10% HCl in water). The reaction was stirred at 25°C for 16 hr. The reaction mixture was poured into water (10 mL) and extracted with ethyl acetate (5 mL x 3). The combined organic extracts were washed with brine (10 mL), dried over anhydrous sodium sulfate, filtered, and concentrated to dryness under reduced pressure to give the title compound (240 mg, 98%) as a white solid. Step C: 1-Phenylcyclohexane-1,4-diol. To a solution of 4-hydroxy-4- phenylcyclohexanone (240 mg, 1.26 mmol) in MeOH (4 mL) was added NaBH4 (95.46 mg, 2.523 mmol) at 0°C. The reaction mixture was stirred at 20°C for 3 hrs. The reaction mixture was poured into water (30 mL) and extracted with ethyl acetate (10 mL x 3). The combined organic extracts were washed with brine (30 mL), dried over anhydrous sodium sulfate, filtered, and concentrated to dryness under reduced pressure to give crude product, which was purified by 233

FCC (eluent: petroleum ether: ethyl acetate = 1:1 to 1:2) to afford the title compound (160 mg, 66 %) as a yellow solid. Step D: 4-Hydroxy-4-phenylcyclohexyl 4-methylbenzenesulfonate. To a solution of 1- phenylcyclohexane-1,4-diol (100 mg, 0.520 mmol) in DCM (2 mL) was added TEA (105.3 mg. 1.040 mmol), TsCl (99.2 mg, 0.520 mmol) and DMAP (3.2 mg, 0.026 mmol). The reaction mixture was stirred at 30°C for 2 hr. The reaction mixture was poured into water (20 mL) and extracted with DCM (10 mL x 3). The combined organic extracts were washed with brine (30 mL), dried over anhydrous sodium sulfate, filtered, and concentrated to dryness under reduced pressure to give crude product, which was purified by FCC (eluent: petroleum ether: ethyl acetate = 20:1 to 15:1) to afford the title compound (31 mg, 17 %) as a light yellow oil. Step E: N-(5-(5-(((1r,1r)-4-hydroxy-4-phenylcyclohexyl)oxy)-2-methyl pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. To a solution of N-(5-(5-hydroxy-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanec arboxamide (Intermediate 7, 180 mg, 0.584 mmol) and 4-hydroxy-4-phenylcyclohexyl 4-methylbenzenesulfonate (202 mg, 0.584 mmol) in DMF (8 mL) was added cesium carbonate (380 mg, 1.17 mmol). The reaction mixture was stirred at 70°C for 16 hr. The crude product was purified by preparative HPLC using a Boston Green ODS 150 mm x 30 mm x 5 µm column (eluent: 35% to 65%(v/v) CH ₃ CN and H2O with 0.04% NH3+10mM NH4HCO3). The product was further purified by SFC YMC CHIRAL Amylose-C 250 mm x 30 mm, 10 µm (eluent: 55% to 55% (v/v) supercritical CO2 in EtOH and H ₂ O with 0.1% NH ₃ ). The pure fractions were collected and the volatiles removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/acetone, and then lyophilized to dryness to afford compound (37.7 mg, 13%) as white solid. MS (ESI): mass calcd. for C ₂₉ H ₃₀ N ₄ O ₃ , 482.2; m/z found, 483.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.21 (s, 1H), 8.65 (d, J = 7.2 Hz, 1H), 8.45 (s, 1H), 7.88 (s, 1H), 7.36 (s, 1H), 7.12 - 7.00 (m, 2H), 6.99 - 6.87 (m, 3H), 6.86 - 6.72 (m, 2H), 4.95 (s, 1H), 4.80 (s, 1H), 2.46 (s, 3H), 2.02 - 1.87 (m, 3H), 1.83 - 1.70 (m, 2H), 1.69 - 1.56 (m, 2H), 1.27 - 1.17 (m, 2H), 0.95 - 0.75 (m, 4H). Example 193: (*R)-N-(5-(5-(2-cyclopropyl-2-hydroxypropoxy)-2-methylpyridi n-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. 234 O N _N -2-methyloxirane. A suspension of trimethylsulfonium iodide (6.31 g, 30.9 mmol), THF (20 mL), and t-BuOK (47.6 mL, 47.6 mmol) was stirred at rt for 30 mins. A solution of 1-cyclopropylethanone (2 g, 23.8 mmol) in THF (5 mL) was added dropwise at rt and the mixture was stirred at rt overnight. The mixture was quenched with saturated ammonium chloride (30 mL) and extracted with ethyl acetate (200 mL x 2). The combined organics were dried over sodium sulfate, filtered, and concentrated to give the title compound (1.5 g, 64%) as a light yellow oil. Step B: (rac-)-N-(5-(5-(2-cyclopropyl-2-hydroxypropoxy)-2-methylpyri din-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. A mixture consisting of N-(5-(5- hydroxy-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyc lopropanecarboxamide (Intermediate 7, 400 mg, 1.30 mmol), 2-cyclopropyl-2-methyloxirane (509 mg, 5.19 mmol), cesium carbonate (1.06 g, 3.24 mmol), and DMF (10 mL) was stirred at 80 ºC for 16 hr. The reaction mixture was concentrated under reduced pressure to give the crude product, which was purified by FCC (eluent: CH ₂ Cl ₂ :MeOH = 1:0 to 10:1) to give crude product. The crude product was further purified by preparative HPLC with Xtimate C18150 x 50 mm x 10 um, column (eluent: 35% to 65% (v/v) CH3CN and H2O with 0.04% NH3-H2O +10mM NH4HCO3) and lyophilized to afford the title compound (60 mg, 11%) as a white solid. Step C: (*R)-N-(5-(5-(2-cyclopropyl-2-hydroxypropoxy)-2-methylpyridi n-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. (rac-)-N-(5-(5-(2-cyclopropyl-2- hydroxypropoxy)-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin- 2-yl)cyclopropanecarboxamide (60 mg, 0.148 mmol) was separated by SFC with DAICEL CHIRALPAK AD (250 mm x 30 mm, 10 um), column (eluent: 50% to 50% (v/v) EtOH with 0.1% NH3·H2O in supercritical CO ₂ ). The product was suspended in water (10 mL), the mixture frozen using dry ice/EtOH, and then lyophilized to dryness to afford the title compound (21.4 mg, 35%) as an off-white solid. MS (ESI): mass calcd. for C23H26N4O3, 406.2; m/z found, 407.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.11 (s, 1H), 8.57 (d, J = 7.2 Hz, 1H), 8.32 (s, 1H), 7.93 (d, J = 0.8 Hz, 1H), 7.37 235

(s, 1H), 7.11 (dd, J = 1.6, 6.8 Hz, 1H), 6.88 (s, 1H), 4.37 (s, 1H), 3.97 - 3.90 (m, 2H), 2.46 (s, 3H), 1.98 - 1.89 (m, 1H), 1.14 (s, 3H), 0.94 - 0.87 (m, 1H), 0.86 - 0.79 (m, 4H), 0.42 - 0.35 (m, 1H), 0.34 - 0.26 (m, 1H), 0.26 - 0.15 (m, 2H). Example 194: trans-N-(5-(5-(((1*R,3*R)-3-hydroxycyclohexyl)oxy)-2-methylp yridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. droxycyclohexyl 4-methylbenzenesulfonate. To a 0 °C (ice/water) mixture consisting of (1R,3S)-cyclohexane-1,3-diol (500 mg, 4.30 mmol), triethylamine (871 mg, 8.61 mmol), and DCM (4 ml) was added a solution 4-methylbenzene-1-sulfonyl chloride (820 mg, 4.30 mmol) in DCM (4 ml). The reaction was stirred at 30 °C for 16 h. Purification by FCC (petroleum ether: ethyl acetate =1:0 to 1:1) affords the crude product (270 mg, 23.2% yield) as a yellow oil. Step B: trans-N-(5-(5-((3-hydroxycyclohexyl)oxy)-2-methylpyridin-4-y l)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide. To a mixture consisting of N-(5-(5-hydroxy-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanec arboxamide (Intermediate 7, 270 mg, 0.876 mmol), (1R,3S)-3-hydroxycyclohexyl 4-methylbenzenesulfonate (237 mg, 0.876 mmol) and DMF (11 mL) was added cesium carbonate (855.9 mg, 2.627 mmol). The reaction mixture was stirred at 75°C for 16 hrs. The mixture was purified by preparative HPLC using a Boston Green ODS 150 x 305u column (eluent: 25% to 55% (v/v) CH3CN and H2O with 0.05% NH ₃ ) and lyophilized to dryness to afford the title compound (96 mg, 26.97%) as a yellow solid. Step C: trans-N-(5-(5-(((1*R,3*R)-3-hydroxycyclohexyl)oxy)-2-methylp yridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. The intermediate trans-N-(5-(5-((3- hydroxycyclohexyl)oxy)-2-methylpyridin-4-yl)pyrazolo[1,5-a]p yridin-2- yl)cyclopropanecarboxamide (96.0 mg, 0.236 mmol) was further purified by SFC over YMC 236

CHIRAL Amylose-C (250mm x 30mm,10um), (eluent: 55% to 55% (v/v) supercritical CO2 in EtOH and H2O with 0.1% NH3). The pure fractions were collected and the volatiles removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (19.6 mg, 20%) as a white solid. MS (ESI): mass calcd. for C23H26N4O3, 406.2; m/z found, 407.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.12 (s, 1H), 8.58 (d, J = 7.2 Hz, 1H), 8.32 (s, 1H), 7.81 (d, J = 0.8 Hz, 1H), 7.35 (s, 1H), 7.04 (dd, J = 1.6, 7.2 Hz, 1H), 6.89 (s, 1H), 4.81 - 4.73 (m, 1H), 4.54 (d, J = 4.4 Hz, 1H), 3.75 - 3.64 (m, 1H), 2.46 (s, 3H), 1.99 - 1.81 (m, 2H), 1.69 - 1.47 (m, 5H), 1.47 - 1.35 (m, 1H), 1.31 - 1.17 (m, 1H), 0.91 - 0.75 (m, 4H). Example 195: trans-N-(5-(5-(((1*S,3*S)-3-hydroxycyclohexyl)oxy)-2-methylp yridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. 2.7 mg, 23%, white solid) was obtained in a manner similar to Example 194, and is the other separated fraction in Step C. MS (ESI): mass calcd. for C ₂₃ H ₂₆ N ₄ O ₃ , 406.2; m/z found, 407.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.12 (s, 1H), 8.58 (d, J = 7.6 Hz, 1H), 8.32 (s, 1H), 7.81(d, J = 0.8 Hz, 1H), 7.35 (s, 1H), 7.04 (dd, J = 1.6, 7.2 Hz, 1H), 6.89 (s, 1H), 4.81 - 4.73 (m, 1H), 4.54 (d, J = 4.0 Hz, 1H), 3.74 - 3.65 (m, 1H), 2.46 (s, 3H), 1.98 - 1.83 (m, 2H), 1.67 - 1.51 (m, 5H), 1.47 - 1.35 (m, 1H), 1.27 - 1.21 (m, 1H), 0.87 - 0.78 (m, 4H). Example 196: N-(5-(5-((4-hydroxy-4-isopropylcyclohexyl)oxy)-2-methylpyrid in-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. 237

)-1-isopropylcyclohexan-1-ol. To a solution of 4- (benzyloxy)cyclohexanone (5.00 g, 24.5 mmol) in THF (250 mL) was added i-PrMgCl·LiCl (20.71 mL, 26.93 mmol) at 0°C. The reaction mixture was stirred at 20°C for 16 hours. The reaction mixture was poured into saturated ammonium chloride (200 mL) and extracted with ethyl acetate (150 mL x 3). The combined organic extracts were washed with brine (400 mL), dried over anhydrous sodium sulfate, filtered, and concentrated to dryness under reduced pressure to give crude product, which was purified by Prep-HPLC (basic) to afford the title compound (980 mg, 8.0% yield) as a yellow oil. Step B: 1-Isopropylcyclohexane-1,4-diol. To a solution of 4-(benzyloxy)-1- isopropylcyclohexanol (980 mg, 3.95 mmol) in MeOH (20 mL) was added Pd/C (100 mg, 10% in H2O). The resultant mixture was stirred under H2 gas (40 psi) at 40°C for 16 hours. The mixture was filtered and concentrated to afford the title compound (650mg, crude product) as a yellow oil. Step C: 4-hydroxy-4-isopropylcyclohexyl 4-methylbenzenesulfonate. To a solution of 1- isopropylcyclohexane-1,4-diol (650 mg, 3.38 mmol) in DCM (20 mL) was added TEA (684.2 mg.6.762 mmol), TsCl (709.0 mg, 3.719 mmol) and DMAP (20.7 mg, 0.169 mmol). The reaction mixture was stirred at 30°C for 2 hr. The reaction mixture was poured into water (20 mL) and extracted with DCM (10 mL x 3). The combined organic extracts were washed with brine (30 mL), dried over anhydrous sodium sulfate, filtered, and concentrated to dryness under reduced pressure to give crude product, which was purified by FCC (eluent: petroleum ether: ethyl acetate = 10:1 to 1:1) to afford the title compound (110 mg, 10%) as a yellow oil. Step D: N-(5-(5-((4-hydroxy-4-isopropylcyclohexyl)oxy)-2-methylpyrid in-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. To a solution of N-(5-(5-hydroxy-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanec arboxamide (Intermediate 7, 70.0 238

mg, 0.227 mmol) and 4-hydroxy-4-isopropylcyclohexyl 4-methylbenzenesulfonate (70.9 mg, 0.227 mmol) in DMF (3 mL) was added cesium carbonate (148 mg, 0.454 mmol). The reaction mixture was stirred at 70°C for 16hr. The crude product was purified by preparative HPLC using a Boston Green ODS 150 mm x 30 mm x 5 µm column (eluent: 36% to 66%(v/v) CH ₃ CN and H2O with 0.04% NH3+10mM NH4HCO3) and then lyophilized to dryness to afford compound (23.8 mg, 23%) as a white solid. MS (ESI): mass calcd. for C ₂₆ H ₃₂ N ₄ O ₃ , 448.3; m/z found, 449.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.09 (s, 1H), 8.55 (d, J = 7.2 Hz, 1H), 8.36 (s, 1H), 7.78 (d, J = 0.8 Hz, 1H), 7.33 (s, 1H), 7.01 (dd, J = 2.0, 7.2 Hz, 1H), 6.86 (s, 1H), 4.80 - 4.74 (m, 1H), 3.76 (s, 1H), 2.45 (s, 3H), 1.97 - 1.89 (m, 1H), 1.85 - 1.75 (m, 2H), 1.71 - 1.62 (m, 2H), 1.39 - 1.23 (m, 3H), 1.14 - 1.05 (m, 2H), 0.86 - 0.77 (m, 4H), 0.54 (d, J = 6.8 Hz, 6H). Example 197: (*S)-N-(5-(5-(2-cyclohexyl-2-hydroxyethoxy)-2-methylpyridin- 4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. necarbonyl chloride. To a solution of cyclohexanecarboxylic acid (1.00 g, 7.80 mmol) in DCM (10 mL) was added oxalyl chloride (1.98 g, 15.6 mmol) and DMF (0.1 mL). The reaction mixture was stirred at 60°C for 2 hr. The mixture was concentrated to afford the title compound (1.2 g, crude product) as yellow solid. Step B: 2-Chloro-1-cyclohexylethan-1-one. To a solution of (trimethylsilyl)diazomethane (3.75 mL, 7.50 mmol) and TEA (759.2 mg, 7.503 mmol) in THF (15 mL) was added cyclohexanecarbonyl chloride (500 mg, 3.41 mmol) at -25°C. The reaction mixture was stirred at rt for 16 hr. To the reaction mixture was added dropwisely 1M HCl (10 mL) in THF (5 mL) at 0°C. The mixture was stirred at rt for 5 hr. The mixture was concentrated, poured into water (40 mL), and extracted with ethyl acetate (10 mL x 3). The combined organic extracts were washed 239

with brine (40 mL), dried over anhydrous sodium sulfate, filtered, and concentrated to dryness under reduced pressure to afford the title compound (370 mg, 68%) as a yellow oil. Step C: N-(5-(5-(2-cyclohexyl-2-oxoethoxy)-2-methylpyridin-4-yl)pyra zolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide. To a solution of N-(5-(5-hydroxy-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (Intermediate 7, 255 mg, 0.830 mmol) and 2-chloro-1-cyclohexylethanone (200 mg, 1.25 mmol) in DMF (1 mL) was added cesium carboate (540.9 mg, 1.660 mmol). The reaction mixture was stirred at 70 °C for 16 hr. The mixture was concentrated and purified by preparative HPLC using a Boston Green ODS 150 mm x 30 mm x 5 µm column (eluent: 41% to 71%(v/v) CH3CN and H2O with 0.04% NH3+10mM NH ₄ HCO ₃ ) and lyophilized to dryness to afford compound (51 mg, 14%) as yellow solid. Step D: (*S)-N-(5-(5-(2-cyclohexyl-2-hydroxyethoxy)-2-methylpyridin- 4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. To a solution of N-(5-(5-(2- cyclohexyl-2-oxoethoxy)-2-methylpyridin-4-yl)pyrazolo[1,5-a] pyridin-2- yl)cyclopropanecarboxamide (40 mg, 0.092 mmol) in MeOH (2 mL) was added NaBH ₄ (7.00 mg, 0.185 mmol) at 0°C. The reaction mixture was stirred at 20°C for 2 hr. The reaction mixture was concentrated and purified by preparative SFC (eluent: 55% to 55%(v/v) 0.1% NH ₃ -H ₂ O in EtOH, DAICEL CHIRALPAK AD(250mm*30mm,10um)) and concentrated. The fractions were suspended in water (10 mL), the mixture frozen using dry ice/EtOH, and then lyophilized to dryness to afford the title compound (16.4 mg, 40.2%) as white solid. MS (ESI): mass calcd. for C ₂₅ H ₃₀ N ₄ O ₃ , 434.2; m/z found, 435.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.09 (s, 1H), 8.55 (d, J = 7.2 Hz, 1H), 8.33 (s, 1H), 7.93 - 7.86 (m, 1H), 7.36 (s, 1H), 7.10 (dd, J = 2.0, 7.2 Hz, 1H), 6.88 (s, 1H), 4.79 (d, J = 5.6 Hz, 1H), 4.15 - 4.07 (m, 1H),4.06 - 3.99 (m, 1H), 3.55 - 3.48 (m, 1H), 2.46 (s, 3H), 1.98 - 1.88 (m, 1H), 1.80 - 1.73. (m, 1H), 1.71 - 1.62 (m, 2H), 1.61 - 1.51 (m, 2H), 1.48 - 1.38 (m, 1H), 1.17 - 0.99 (m, 5H), 0.89 - 0.77 (m, 4H). Example 198: trans-4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1 ,5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxy]cyclohexanol. 240

,4-cyclohexanediol (100 mg, 0.861 mmol) in DMA (1.44 mL) was added NaH (68 mg, 60% dispersion in mineral oil). The mixture was allowed to stir at 60 °C for 5 min. To this was added, Intermediate 15 (100 mg, 0.287 mmol), and the reaction was stirred at 90 °C for 48 hr. The reaction was worked-up in water and 10% IPA/chloroform. The organic extracts were dried with sodium sulfate and purified via prep HPLC (Basic ISCO, Gemini 5 uM NX-C18110 angstrom LC column 150 x 21.2 mm; 10-100% AcN / 20 mM aq NH ₃ over 15 min; 40 mL/min) and lyophilized to yield the title compound as a white solid (25 mg, 20%). MS (ESI): mass calcd. for C ₂₅ H ₂₈ N ₆ O ₂ , 444.2; m/z found, 445.3 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.12 (s, 1H), 8.53 – 8.48 (m, 1H), 8.28 (s, 1H), 7.74 – 7.66 (m, 1H), 7.27 (s, 1H), 6.93 (dd, J = 7.2, 2.0 Hz, 1H), 6.78 (s, 1H), 5.68 (s, 1H), 4.45 (d, J = 4.0 Hz, 1H), 4.39 – 4.27 (m, 1H), 3.48 – 3.38 (m, 1H), 2.39 (d, J = 2.1 Hz, 6H), 2.23 (s, 3H), 1.95 – 1.85 (m, 2H), 1.70 – 1.62 (m, 2H), 1.42 – 1.28 (m, 2H), 1.26 – 1.17 (m, 2H). Example 199: N-[5-[5-(4-hydroxyiminocyclohexoxy)-2-methyl-4-pyridyl]pyraz olo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. dioxaspiro[4.5]decan-8-yl)oxy)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. NaH (0.644 g, 16.1 mmol, 60% in 241

mineral oil) was added to a solution consisting of 1,4-dioxaspiro[4.5]decan-8-ol (2.55 g, 16.1 mmol) in 12.5 mL DMA. The resulting mixture was stirred at 80 °C for 30 min. To this was added dropwisely a solution of N-(5-(5-fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2 - yl)cyclopropanecarboxamide (Intermediate 6, 1.00 g, 3.22 mmol) in 7.5 mL DMA at 80 °C. The mixture was allowed to stir at 80 °C for 1 hr. The combined reaction mixture was quenched with water (20 mL) and diluted with ethyl acetate (100 mL). The organic layer was separated, washed with brine (30 mL x 3), dried over anhydrous sodium sulfate, filtered and concentrated to dryness under reduced pressure to afford the crude product which was purified by FCC (petroleum ether: ethyl acetate =2:3 to 0:1) to afford the title compound as white solid. Step B: N-(5-(2-methyl-5-((4-oxocyclohexyl)oxy)pyridin-4-yl)pyrazolo [1,5-a]pyridin-2- yl)cyclopropanecarboxamide. To a mixture consisting of N-(5-(5-(1,4-dioxaspiro[4.5]decan-8- yloxy)-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cycl opropanecarboxamide (1.20 g, 2.68 mmol) and DCM (60 mL) was added FeCl ₃ .6H ₂ O (4.34 g, 16.1 mmol) at 28 °C. The reaction mixture was stirred at rt for 37 hrs. The reaction mixture was diluted with 40 mL DCM, adjusted to pH 8 with aqueous NaHCO3, and filtered through a pad of Celite. The pad was rinsed with DCM (100 mL). The organic layer was separated and the aqueous layer was extracted with DCM (50 mL x 2). The combined organics were dried over sodium sulfate, filtered and concentrated to dryness under reduced pressure to give the crude product. The product was suspended in MeCN (10 mL) and water (50 mL), and the mixture frozen using dry ice/ethanol, and then lyophilized to afford the title compound (1.05 g, 88%) as a light yellow solid. Step C: N-[5-[5-(4-hydroxyiminocyclohexoxy)-2-methyl-4-pyridyl]pyraz olo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. A mixture consisting of N-(5-(2-methyl-5-((4- oxocyclohexyl)oxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)c yclopropanecarboxamide (200 mg, 0.494 mmol), hydroxylamine (49.0 mg, 0.742 mmol), water (1.6 ml) and EtOH (4 mL) was stirred at 80 °C for 16h. The mixture was concentrated under reduced pressure and purified by preparative HPLC using a Phenomenex Gemini-NX C1875 X 30mm X 3um column (eluent: 25% to 55% (v/v) CH ₃ CN and H ₂ O with 0.04% NH ₃ ) and lyophilized to dryness to afford the title compound (149.9 mg, 72.3%) as a white solid. MS (ESI): mass calcd. for C23H25N5O3, 419.2; m/z found, 420.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 9.17 (s, 1H), 9.04 (s, 1H), 8.31 (s, 1H), 8.27 (d, J = 6.8 Hz, 1H), 7.63 (s, 1H), 7.20 (s, 1H), 7.02 (s, 1H), 6.97 (dd, J = 1.6, 7.2 Hz, 1H), 4.63 - 4.56 (m, 1H), 2.70 - 2.60 (m, 1H), 2.56 (s, 3H), 2.50 - 2.40 (m, 1H), 2.37 - 2.28 242

(m, 1H), 2.22 - 2.13 (m, 1H), 2.01 - 1.80 (m, 4H), 1.55 - 1.60 (m, 1H), 1.18 - 1.10 (m, 2H), 0.93 - 0.85 (m, 2H). Example 200: 1-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- methyl-3-pyridyl]oxy]-2-methyl-propan-2-ol. as added 1-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)-2-methylpropan-2-ol (Intermediate 20, 100 mg, 0.32 mmol), 4-chloro- 2,6-dimethylpyrimidine (50 mg, 0.35 mmol), cesium carbonate (313 mg, 0.96 mmol), and t-Bu- BRETTPhos Pd G3 (13.7 mg, 0.016 mmol). The vial was sealed and injected with 1,4-dioxane (0.64 mL) under vacuum. An argon balloon was inserted, then the reaction was heated at 90 °C for 4 hr. The reaction mixture was diluted with ethyl acetate, then filtered through Celite. The filtrate was concentrated under vacuum, then purified via FCC (10% MeOH (with 2M NH3) in DCM) to yield the title compound (68 mg, 50%) as a yellow solid. MS (ESI): mass calcd. for C23H26N6O2, 418.2; m/z found, 419.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CD3OD) δ 8.48 - 8.41 (m, 1H), 8.24 (s, 1H), 7.85 - 7.78 (m, 1H), 7.39 (s, 1H), 7.08 (dd, J = 7.2, 2.0 Hz, 1H), 7.06 - 7.03 (m, 1H), 6.87 (s, 1H), 3.93 (s, 2H), 2.53 (d, J = 2.3 Hz, 6H), 2.38 (s, 3H), 1.26 (s, 6H). Example 201: 1-[[4-[2-[(5,6-dimethylpyridazin-3-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- methyl-3-pyridyl]oxy]-2-methyl-propan-2-ol. s prepared (77 mg, 58%, yellow solid) in a manner similar to Example 200, using 6-chloro-3,4-dimethylpyridazine instead of 4-chloro-2,6- dimethylpyrimidine. MS (ESI): mass calcd. for C ₂₃ H ₂₆ N ₆ O ₂ , 418.2; m/z found, 419.3 [M+H] ⁺ . 243

¹ H NMR (500 MHz, DMSO-d6) δ 9.91 (s, 1H), 8.59 – 8.53 (m, 1H), 8.32 (s, 1H), 7.93 – 7.86 (m, 1H), 7.40 – 7.35 (m, 2H), 7.04 (dd, J = 7.2, 2.0 Hz, 1H), 6.91 – 6.86 (m, 1H), 4.66 (s, 1H), 3.88 (s, 2H), 2.47 (d, J = 3.5 Hz, 6H), 2.25 (s, 3H), 1.17 (s, 6H). Example 202: 1-[[4-[2-[(2-ethyl-6-methyl-pyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]-6- methyl-3-pyridyl]oxy]-2-methyl-propan-2-ol. prepared (53 mg, 38%, white solid) in a manner similar to Example 200, using 4-chloro-2-ethyl-6-methylpyrimidine instead of 4-chloro-2,6- dimethylpyrimidine. MS (ESI): mass calcd. for C24H28N6O2, 432.2; m/z found, 433.3 [M+H] ⁺ . 1H NMR (500 MHz, DMSO-d6) δ 10.13 (s, 1H), 8.54 – 8.49 (m, 1H), 8.24 (s, 1H), 7.84 – 7.79 (m, 1H), 7.31 (s, 1H), 7.01 (dd, J = 7.2, 2.0 Hz, 1H), 6.96 – 6.79 (m, 2H), 4.57 (s, 1H), 3.81 (s, 2H), 2.67 (q, J = 7.6 Hz, 2H), 2.40 (s, 3H), 2.24 (s, 3H), 1.23 (t, J = 7.6 Hz, 3H), 1.09 (s, 6H). Example 203: (*R)-3-(((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1 ,5-a]pyridin-5-yl)- 6-methylpyridin-3-yl)oxy)methyl)tetrahydrofuran-3-ol. hydrofuran-3-yl)methyl 4-methylbenzenesulfonate. To a mixture consisting of 3-(hydroxymethyl)tetrahydrofuran-3-ol (200 mg, 1.69 mmol), TEA (308 mg, 3.05 mmol), DMAP (20.7 mg, 0.169 mmol) and DCM (5 mL) was added TsCl (339 mg, 1.78 mmol). The mixture was stirred at 25 °C for 1.5 h. The reaction mixture was washed with 1N HCl (10 mL x 2) and saturated aqueous NaHCO3 (10 mL x 2), then concentrated under reduced pressure to afford the title compound as a yellow oil (300 mg, 65%). 244

Step B: (rac-)3-(((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[ 1,5-a]pyridin-5-yl)- 6-methylpyridin-3-yl)oxy)methyl)tetrahydrofuran-3-ol. A mixture consisting of Intermediate 16 (223 mg, 0.643 mmol), (3-hydroxytetrahydrofuran-3-yl)methyl 4-methylbenzenesulfonate (140 mg, 0.514 mmol), cesium carbonate (419 mg,1.29 mmol) and DMF (2 mL) was stirred for 1 h at 110 °C in the microwave. The mixture was purified by preparative HPLC with a Phenomenex Gemini-NX 150 x 30mm x 5um column (eluent: 23% to 53% (v/v) CH ₃ CN and H ₂ O with 0.04% NH ₃ -H ₂ O) and lyophilized to dryness to the title compound (110 mg, 38%) as a white solid. Step C: (*R)-3-(((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1 ,5-a]pyridin-5-yl)- 6-methylpyridin-3-yl)oxy)methyl)tetrahydrofuran-3-ol. (rac-)-3-(((4-(2-((2,6-dimethylpyrimidin- 4-yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl )oxy)methyl)tetrahydrofuran-3-ol (160 mg, 0.358 mmol) was further purified by SFC-11 over DAICEL CHIRALPAK AD 250 mm x 30 mm x 10 µm (eluent: 45% to 45% (v/v) EtOH with 0.1% NH3•H2O in supercritical CO2). The pure fractions were collected and the volatiles removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/EtOH, and then lyophilized to dryness to afford the title compound (67 mg, 42%). MS (ESI): mass calcd. for C ₂₄ H ₂₆ N ₆ O ₃ , 446.2; m/z found, 447.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.33 (d, J = 7.2 Hz, 1H), 8.28 (s, 1H), 7.67 (s, 1H), 7.57 (s, 1H), 7.17 (s, 1H), 6.99 (s, 1H), 6.87 (dd, J = 2.0, 7.2 Hz, 1H), 6.58 (s, 1H), 4.25 - 4.19 (m, 1H), 4.18 - 4.13 (m, 1H), 4.10 - 4.01 (m, 1H), 3.97 - 3.90 (m, 1H), 3.86 - 3.76 (m, 2H), 3.17 (s, 1H), 2.58 (s, 3H), 2.57 (s, 3H), 2.43 (s, 3H), 2.09 - 1.99 (m, 2H). Example 204: (3R,5R)-5-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo [1,5-a]pyridin-5- yl]-6-methyl-3-pyridyl]oxymethyl]tetrahydrofuran-3-ol. roxytetrahydrofuran-2-yl)methyl 4-methylbenzenesulfonate. To a mixture consisting of (3R,5R)-5-(hydroxymethyl)tetrahydrofuran-3-ol (300 mg, 2.54 mmol), TEA (514 mg, 5.08 mmol), DMAP (31 mg, 0.25 mmol) and DCM (5 mL) was added TsCl (508 245

mg, 2.67 mmol). The mixture was stirred at 25 °C for 1.5 h. The reaction mixture was washed with 1N HCl (10 mL x 2) and saturated aqueous NaHCO3 (10 mL x 2), then concentrated under reduced pressure to afford the title compound as a yellow oil (500 mg, 72%). Step B: (3R,5R)-5-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo [1,5-a]pyridin-5- yl]-6-methyl-3-pyridyl]oxymethyl]tetrahydrofuran-3-ol. A mixture consisting of Intermediate 16 (120 mg, 0.346 mmol), ((2R,4R)-4-hydroxytetrahydrofuran-2-yl)methyl 4- methylbenzenesulfonate (99 mg, 0.36 mmol), cesium carbonate (226 mg, 0.693 mmol) and DMF (2 mL) was stirred in the microwave at 110 °C. The mixture was purified by preparative HPLC with a Phenomenex Gemini-NX 150 x 30mm x 5um column (eluent: 23% to 53% (v/v) CH3CN and H ₂ O with 0.04% NH ₃ -H ₂ O) and lyophilized to dryness. The product was impure, and was re-purified via SFC over AD 250 mm x 50 mm, 10 µm (eluent: 40% to 40% (v/v) supercritical CO2 in EtOH and H2O with 0.1% NH3) to yield the title compound. MS (ESI): mass calcd. for C ₂₄ H ₂₆ N ₆ O ₃ , 446.2; m/z found, 447.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.21 (s, 1H), 8.57 (d, J = 7.2 Hz, 1H), 8.34 (s, 1H), 7.88 (s, 1H), 7.37 (s, 1H), 7.11 - 7.06 (m, 1H), 7.01 (s, 1H), 6.87 (s, 1H), 4.98 (d, J = 4.0 Hz, 1H), 4.37 - 4.28 (m, 1H), 4.26 - 4.13 (m, 3H), 3.71 - 3.66 (m, 1H), 3.65 - 3.60 (m, 1H), 2.49 - 2.44 (m, 6H), 2.30 (s, 3H), 2.23 - 2.14 (m, 1H), 1.69 - 1.58 (m, 1H). Example 205: 1-[[4-[2-[[2-(methoxymethyl)-6-methyl-pyrimidin-4-yl]amino]p yrazolo[1,5- a]pyridin-5-yl]-6-methyl-3-pyridyl]oxy]-2-methyl-propan-2-ol . pared (73 mg, 43%, white solid) in a manner similar to Example 200, using 4-chloro-2-(methoxymethyl)-6-methylpyrimidine instead of 4-chloro-2,6- dimethylpyrimidine. MS (ESI): mass calcd. for C ₂₄ H ₂₈ N ₆ O ₃ , 448.2; m/z found, 449.2 [M+H] ⁺ . 1H NMR (500 MHz, DMSO-d6) δ10.28 (s, 1H), 8.56 – 8.48 (m, 1H), 8.25 (s, 1H), 7.88 – 7.77 (m, 1H), 7.31 (s, 1H), 7.02 (dd, J = 7.2, 2.0 Hz, 2H), 6.83 (s, 1H), 4.57 (s, 1H), 4.35 (s, 2H), 3.81 (s, 2H), 3.34 (s, 3H), 2.40 (s, 3H), 2.28 (s, 3H), 1.09 (s, 6H). 246

Example 206: N-(2,6-dimethylpyrimidin-4-yl)-5-(2-methyl-5-(((2*S,3*R)-2- methyltetrahydrofuran-3-yl)methoxy)pyridin-4-yl)pyrazolo[1,5 -a]pyridin-2-amine. trahydrofuran-3-yl)methyl 4-methylbenzenesulfonate. A solution consisting of ((cis)-2-methyltetrahydrofuran-3-yl)methanol (500 mg, 4.30 mmol), DMAP (789 mg, 6.46 mmol), and dichloromethane (10 mL) was treated with TsCl (1.23 g, 6.46 mmol) at room-temperature. The resultant mixture was stirred at room-temperature for 16 hr. The mixture was washed with HCl (5 mL x 2, 1 M), then with NaHCO3 aq. (5 mL x 2) then finally with water (5 mL x 2). The organic layer was dried over sodium sulfate, and concentrated to dryness to afford the title compound (721 mg, 62.0%) as a colorless oil. Step B: N-(2,6-dimethylpyrimidin-4-yl)-5-(2-methyl-5-(((cis)-2-methy ltetrahydrofuran- 3-yl)methoxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. A mixture consisting of Intermediate 16 (894 mg, 2.58 mmol), ((cis)-2-methyltetrahydrofuran-3-yl)methyl 4-methylbenzenesulfonate (698 mg, 2.58 mmol), cesium carbonate (2.52 g, 7.75 mmol), and DMF (5 mL) was heated to 110 °C via microwave irradiation for 1 hour before cooling to room-temperature. The reaction mixture was added with water (20 mL) and extracted with ethyl acetate (20 mL x 3). The combined organic extracts were concentrated and purified by preparative HPLC using a Boston Prime C18150 x 30 mm x 5 µm column (eluent: 35% to 65% (v/v) CH3CN and H2O with 0.04% NH3-H2O +10mM NH4HCO3) and lyophilized to dryness to afford the title compound (334 mg, total yield: 28%) as a white solid. Step C: N-(2,6-dimethylpyrimidin-4-yl)-5-(2-methyl-5-(((2*S,3*R)-2- methyltetrahydrofuran-3-yl)methoxy)pyridin-4-yl)pyrazolo[1,5 -a]pyridin-2-amine. N-(2,6- dimethylpyrimidin-4-yl)-5-(2-methyl-5-(((cis)-2-methyltetrah ydrofuran-3-yl)methoxy)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-amine (334 mg, 0.751 mmol) was purified by SFC over DAICEL CHIRALPAK AD-H 250 mm x 30 mm x 5 µm (eluent: 40% to 40% (v/v) IPA with 0.1% NH3•H2O in supercritical CO2). The pure fractions were collected and the volatiles removed 247

under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/EtOH, and then lyophilized to dryness to afford the title compound (114 mg, 34%). MS (ESI): mass calcd. for C ₂₅ H ₂₈ N ₆ O ₂ , 444.2; m/z found, 445.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.23 (s, 1H), 8.60 (d, J = 7.2 Hz, 1H), 8.38 (s, 1H), 7.81 (s, 1H), 7.36 (s, 1H), 7.05 - 6.98 (m, 2H), 6.85 (s, 1H), 4.18 - 4.10 (m, 1H), 4.08 - 4.02 (m, 1H), 4.00 - 3.92 (m, 1H), 3.86 - 3.77 (m, 1H), 3.59 - 3.50 (m, 1H), 2.58 - 2.54 (m, 1H), 2.47 (s, 3H), 2.46 (s, 3H), 2.30 (s, 3H), 2.06 - 1.94 (m, 1H), 1.81 - 1.68 (m, 1H), 1.04 (d, J = 6.4 Hz, 3H). Example 207: N-(2,6-dimethylpyrimidin-4-yl)-5-(2-methyl-5-(((2*R,3*S)-2- methyltetrahydrofuran-3-yl)methoxy)pyridin-4-yl)pyrazolo[1,5 -a]pyridin-2-amine. 6 mg, 38%, white solid) was obtained in a manner similar to Example 206, and is the other separated fraction in Step C. MS (ESI): mass calcd. for C25H28N6O2, 444.2; m/z found, 445.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.23 (s, 1H), 8.60 (d, J = 7.2 Hz, 1H), 8.38 (s, 1H), 7.81 (d, J = 0.8 Hz, 1H), 7.36 (s, 1H), 7.07 - 6.98 (m, 2H), 6.85 (s, 1H), 4.16 - 4.10 (m, 1H), 4.08 - 4.02 (m, 1H), 4.00 - 3.92 (m, 1H), 3.85 - 3.78 (m, 1H), 3.59 - 3.51 (m, 1H), 2.58 - 2.54 (m, 1H), 2.47 (s, 3H), 2.46 (s, 3H), 2.30 (s, 3H), 2.05 - 1.95 (m, 1H), 1.79 - 1.69 (m, 1H), 1.04 (d, J = 6.4 Hz, 3H). Example 208: 3-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]amino]-5-methyl-1H-pyridazin-6-one. s prepared (106 mg, 26%, white solid) in a manner similar to Example 200, using 6-chloro-4-methylpyridazin-3(2h)-one instead of 4-chloro-2,6- 248

dimethylpyrimidine. MS (ESI): mass calcd. for C22H24N6O3, 420.2; m/z found, 421.2 [M+H] ⁺ . 1H NMR (500 MHz, DMSO-d6) δ 12.07 (s, 1H), 9.65 (s, 1H), 8.56 – 8.49 (m, 1H), 8.31 (s, 1H), 7.90 – 7.81 (m, 1H), 7.36 (s, 1H), 7.28 – 7.19 (m, 1H), 7.05 (dd, J = 7.2, 2.0 Hz, 1H), 6.77 – 6.71 (m, 1H), 4.64 (s, 1H), 3.88 (s, 2H), 2.47 (s, 3H), 2.06 (d, J = 1.3 Hz, 3H), 1.16 (s, 6H). Example 209: 6-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]amino]-2,4-dimethyl-pyridazin-3-one. s prepared (13.5 mg, 9%, white solid) in a manner similar to Example 200, using 6-chloro-2,4-dimethylpyridazin-3(2h)-one instead of 4-chloro-2,6- dimethylpyrimidine. MS (ESI): mass calcd. for C23H26N6O3, 434.2; m/z found, 435.2 [M+H] ⁺ . 1H NMR (400 MHz, DMSO-d6) δ 9.67 (s, 1H), 8.52 – 8.41 (m, 1H), 8.24 (s, 1H), 7.77 (dd, J = 2.0, 0.9 Hz, 1H), 7.29 (s, 1H), 7.17 (d, J = 1.5 Hz, 1H), 7.00 (dd, J = 7.1, 2.0 Hz, 1H), 6.82 – 6.66 (m, 1H), 4.55 (s, 1H), 3.80 (s, 2H), 3.54 (s, 3H), 2.39 (s, 3H), 2.06 – 1.97 (m, 3H), 1.08 (s, 6H). Example 210: (*S)-N-[5-[5-[(3-cyanopyrrolidin-3-yl)methoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. ((1-benzyl-3-cyanopyrrolidin-3-yl)methoxy)-2-methylpyridin-4 - yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. The title compound was prepared (7 mg, 7% yield) by the similar method of Example 1 by using 1-benzyl-3- 249

(hydroxymethyl)pyrrolidine-3-carbonitrile instead of (R)-(1-methylpyrrolidin-3-yl)methanol and Intermediate 6 instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide. The resulting racemate N-(5-(5-((1-benzyl-3-cyanopyrrolidin-3- yl)methoxy)-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl )cyclopropanecarboxamide (320 mg, 0.632 mmol) was purified by SFC over DAICEL CHIRALCEL OJ-H 250 mm x 30 mm, 5 µm (eluent: 50% to 50% (v/v) supercritical 0.1% NH ₃ -H ₂ O ETOH). The pure fractions were collected and the volatiles were removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/acetone, and then lyophilized to dryness to afford (*R)-N-(5-(5-((1-benzyl-3-cyanopyrrolidin-3-yl)methoxy)-2-me thylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (110 mg, 27%) as a yellow solid and (*S)-N-(5-(5-((1-benzyl-3-cyanopyrrolidin-3-yl)methoxy)-2-me thylpyridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide (170 mg, 52%) as a white solid. Step B: (*S)-N-[5-[5-[(3-cyanopyrrolidin-3-yl)methoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. A mixture of 10% Pd/C (30 mg, dry) and MeOH (4 mL) was added HCOO·NH4 (90 mg, 1.4 mmol) and (*S)-N-(5-(5-((1-benzyl- 3-cyanopyrrolidin-3-yl)methoxy)-2-methylpyridin-4-yl)pyrazol o[1,5-a]pyridin-2- yl)cyclopropanecarboxamide (60 mg, 0.12 mmol), then the reaction was stirred at 55 °C for 16 h. The suspension was filtered through a pad of Celite® and the pad washed with MeOH (10 mL). The filtrate was concentrated to dryness under reduced pressure to afford the title product. The post chromatographic product was further purified by preparative HPLC using a Waters Xbridge Prep OBD C18150 x 40 mm x 10 µm column (eluent: 0% to 60% (v/v) water (10mM NH4HCO3)-ACN) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (2.2 mg, 4%) as a white solid. MS (ESI): mass calcd. for C23H24N6O2, 416.2; m/z found, 417.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CD3OD) δ 8.42 (d, J = 7.6 Hz, 1H), 8.26 (s, 1H), 7.84 (d, J = 1.2 Hz, 1H), 7.41 (s, 1H), 7.09 (dd, J = 2.0, 7.6 Hz, 1H), 6.92 (s, 1H), 4.58 (s, 1H), 4.31 - 4.18 (m, 2H), 3.21 - 3.15 (m, 1H), 3.11 - 3.06 (m, 1H), 3.03 - 2.95 (m, 2H), 2.54 (s, 3H), 2.32 - 2.18 (m, 1H), 2.07 - 1.94 (m, 1H), 1.91 - 1.80 (m, 1H), 1.03 - 0.97 (m, 2H), 0.93 - 0.87 (m, 2H). 250 Example 211: (*R)-N-[5-[5-[[(3R)-3-cyanopyrrolidin-3-yl]methoxy]-2-methyl -4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. O N _N ed (2 mg, 4% yield) by the similar method of Example 210 Example by using (*R)-N-(5-(5-((1-benzyl-3-cyanopyrrolidin-3-yl)methoxy)-2-me thylpyridin- 4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide instead of (*S)-N-(5-(5-((1-benzyl- 3-cyanopyrrolidin-3-yl)methoxy)-2-methylpyridin-4-yl)pyrazol o[1,5-a]pyridin-2- yl)cyclopropanecarboxamide in step B. MS (ESI): mass calcd. for C ₂₃ H ₂₄ N ₆ O ₂ , 416.2; m/z found, 417.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CD3OD) δ 8.43 (d, J = 6.8 Hz, 1H), 8.26 (s, 1H), 7.85 (d, J = 0.8 Hz, 1H), 7.42 (s, 1H), 7.10 (dd, J = 1.6, 7.2 Hz, 1H), 6.92 (s, 1H), 4.36 - 4.15 (m, 2H), 3.21 - 3.14 (m, 1H), 3.11 - 3.04 (m, 1H), 3.03 - 2.94 (m, 2H), 2.54 (s, 3H), 2.33 - 2.16 (m, 1H), 2.06 - 1.96 (m, 1H), 1.92 - 1.82 (m, 1H), 1.04 - 0.95 (m, 2H), 0.94 - 0.86 (m, 2H). Example 212: (*S)-N-[5-[5-[(3-cyano-1-methyl-pyrrolidin-3-yl)methoxy]-2-m ethyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. O N _N d/C (50 mg, dry) and MeOH (2 mL) was added HCOO·NH ₄ (44.8 mg, 0.711 mmol), HCl (0.118 mL, 0.118 mmol) and (*S)-N-(5-(5-((1-benzyl-3-cyanopyrrolidin- 3-yl)methoxy)-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide (30 mg, 0.059 mmol) , then the reaction was stirred at 50 °C for 16 h. The suspension was filtered through a pad of Celite® and the pad washed with ethyl acetate (10 mL). The filtrate was 251 concentrated to dryness under reduced pressure. The product was purified by preparative HPLC using a YMC-Triart Prep C18250 x 50 mm x 10 µm column (eluent: 25% to 55% (v/v) water (0.04% NH ₃ -H ₂ O +10mM NH ₄ HCO ₃ )-ACN) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (2 mg, 7%) as a white solid. MS (ESI): mass calcd. for C24H26N6O2, 430.2; m/z found, 431.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CD ₃ OD) δ 8.42 (d, J = 6.8 Hz, 1H), 8.26 (s, 1H), 7.84 (s, 1H), 7.42 (s, 1H), 7.16 - 7.02 (m, 1H), 6.92 (s, 1H), 4.39 - 4.15 (m, 2H), 2.97 - 2.84 (m, 1H), 2.77 - 2.67 (m, 2H), 2.63 - 2.57 (m, 1H), 2.54 (s, 3H), 2.31 (s, 3H), 2.30 - 2.24 (m, 1H), 2.14 - 2.03 (m, 1H), 1.91 - 1.82 (m, 1H), 1.02 - 0.96 (m, 2H), 0.94 - 0.88 (m, 2H). Example 213: (*R)-N-[5-[5-[(3-cyano-1-methyl-pyrrolidin-3-yl)methoxy]-2-m ethyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. O N _N s isolated as a secondary product from Example 211 to afford the title compound (3 mg, 6%). MS (ESI): mass calcd. for C ₂₄ H ₂₆ N ₆ O ₂ , 430.2; m/z found, 431.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CD3OD) δ 8.42 (d, J = 7.6 Hz, 1H), 8.25 (s, 1H), 7.83 (d, J = 1.2 Hz, 1H), 7.41 (s, 1H), 7.09 (dd, J = 2.0, 7.2 Hz, 1H), 6.92 (s, 1H), 4.33 - 4.17 (m, 2H), 2.93 - 2.85 (m, 1H), 2.76 - 2.67 (m, 2H), 2.63 - 2.56 (m, 1H), 2.54 (s, 3H), 2.31 (s, 3H), 2.30 - 2.24 (m, 1H), 2.13 - 2.04 (m, 1H), 1.93 - 1.82 (m, 1H), 1.05 - 0.95 (m, 2H), 0.94 - 0.83 (m, 2H). Example 214: (*R)-N-[5-[5-[(3-methoxypyrrolidin-3-yl)methoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 252

as prepared (7 mg, 7% yield) by the similar method of Example 8 by using tert-butyl 3-(hydroxymethyl)-3-methoxypyrrolidine-1-carboxylate instead of (2S,4R)- tert-butyl 4-hydroxy-2-(trifluoromethyl)piperidine-1-carboxylate and Intermediate 6 instead of Intermediate 4. N-(5-(5-((3-methoxypyrrolidin-3-yl)methoxy)-2-methylpyridin- 4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (90 mg, .21 mmol) was purified purified by SFC over AD 250 mm x 50 mm, 10 µm (eluent: 40% to 40% (v/v) supercritical CO2 in EtOH and H ₂ O with 0.1% NH ₃ ). The pure fractions were collected and the volatiles were removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/acetone, and then lyophilized to dryness to afford (*R)-N-[5-[5-[(3- methoxypyrrolidin-3-yl)methoxy]-2-methyl-4-pyridyl]pyrazolo[ 1,5-a]pyridin-2- yl]cyclopropanecarboxamide (32 mg, 35%). MS (ESI): mass calcd. for C ₂₃ H ₂₇ N ₅ O ₃ , 421.2; m/z found, 422.3 [M+H] ⁺ . ¹ H NMR (400 MHz, CD3OD) δ 8.42 (d, J = 7.6 Hz, 1H), 8.28 (s, 1H), 7.81 (d, J = 0.8 Hz, 1H), 7.39 (s, 1H), 7.06 (dd, J = 2.0, 7.6 Hz, 1H), 6.90 (s, 1H), 4.37 (d, J = 10.4 Hz, 1H), 4.24 (d, J = 10.4 Hz, 1H), 3.23 (s, 3H), 3.14 - 3.05 (m, 2H), 3.04 - 2.96 (m, 1H), 2.96 - 2.89 (m, 1H), 2.53 (s, 3H), 2.14 - 2.03 (m, 1H), 1.92 - 1.79 (m, 2H), 1.03 - 0.95 (m, 2H), 0.93 - 0.85 (m, 2H). Example 215: (*S)-N-[5-[5-[(3-methoxypyrrolidin-3-yl)methoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 5 mg, 38%) was prepared in Example 214, and is the other peak from the SFC purification step. MS (ESI): mass calcd. for C ₂₃ H ₂₇ N ₅ O ₃ , 421.2; m/z found, 422.3 253

[M+H] ⁺ . ¹ H NMR (400 MHz, CD3OD) δ 8.43 (d, J = 7.6 Hz, 1H), 8.29 (s, 1H), 7.85 - 7.79 (m, 1H), 7.40 (s, 1H), 7.06 (dd, J = 1.2, 7.2 Hz, 1H), 6.90 (s, 1H), 4.41 (d, J = 10.4 Hz, 1H), 4.26 (d, J = 10.4 Hz, 1H), 3.24 (s, 3H), 3.21 - 3.09 (m, 3H), 3.05 - 2.99 (m, 1H), 2.54 (s, 3H), 2.24 - 2.12 (m, 1H), 1.95 - 1.84 (m, 2H), 1.03 - 0.97 (m, 2H), 0.94 - 0.88 (m, 2H). Example 216: (*R)-3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxymethyl]tetrahydropyran-3-ol. s prepared as described in Example 193, Step B, and using 1,5- dioxaspiro[2.5]octane instead of 2-cyclopropyl-2-methyloxirane; 3-(((4-(2-((2,6- dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3- yl)oxy)methyl)tetrahydro-2H-pyran-3-ol (140 mg, 0.304 mmol) was purified by SFC-17 over DAICEL CHIRALCEL OJ-H 250 mm x 30 mm x 5 µm (eluent: 35% to 35% (v/v) EtOH with 0.1% NH ₃ •H ₂ O in supercritical CO ₂ ). The pure fractions were collected and the volatiles were removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/EtOH, and then lyophilized to dryness to afford (*R)-3-[[4-[2-[(2,6- dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-6- methyl-3- pyridyl]oxymethyl]tetrahydropyran-3-ol (47.20 mg, 33%) as a white solid. MS (ESI): mass calcd. for C25H28N6O3, 460.2; m/z found, 461.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.31 (d, J = 7.2 Hz, 1H), 8.28 (s, 1H), 7.58 (d, J = 0.8 Hz, 1H), 7.54 (s, 1H), 7.16 (s, 1H), 7.02 (s, 1H), 6.85 (dd, J = 2.0, 7.2 Hz, 1H), 6.57 (s, 1H), 4.11 - 4.06 (m, 1H), 4.05 - 4.01 (m, 1H), 3.81 - 3.73 (m, 1H), 3.68 - 3.61 (m, 2H), 3.61 - 3.52 (m, 1H), 3.01 (br. s., 1H), 2.57 (s, 3H), 2.56 (s, 3H), 2.45 (s, 3H), 1.97 - 1.85 (m, 1H), 1.81 - 1.69 (m, 2H), 1.61 - 1.54 (m, 1H). Example 217: 1-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- methyl-3-pyridyl]oxymethyl]cyclobutanol. 254

mg, 22%) was prepared as described in Example 193, Step B, and using 1-oxaspiro[2.3]hexane instead of 2-cyclopropyl-2-methyloxirane and using Intermediate 16 instead of Intermediate 7. MS (ESI): mass calcd. for C24H26N6O2, 430.2; m/z found, 431.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.34 (d, J = 7.2 Hz, 1H), 8.31 (s, 1H), 7.63 - 7.58 (m, 1H), 7.43 (br. s., 1H), 7.18 (s, 1H), 7.05 (s, 1H), 6.92 (dd, J = 1.2, 7.2 Hz, 1H), 6.55 (s, 1H), 4.10 (s, 2H), 2.59 (s, 3H), 2.57 (s, 3H), 2.44 (s, 3H), 2.21 - 2.08 (m, 4H), 1.90 - 1.78 (m, 1H), 1.62 - 1.54 (m, 1H). Example 218: (2R,3S)-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo [1,5-a]pyridin-5- yl]-6-methyl-3-pyridyl]oxymethyl]tetrahydrofuran-3-ol. s prepared (7 mg, 7% yield) by the similar method of Example 188 by using Intermediate 16 instead of Intermediate 7 and ((2R,3S)-3-hydroxytetrahydrofuran- 2-yl)methyl 4-methylbenzenesulfonate instead of (4,4-difluoro-1-hydroxycyclohexyl)methyl 4- methylbenzenesulfonate. MS (ESI): mass calcd. for C ₂₄ H ₂₆ N ₆ O ₃ , 446.2; m/z found, 447.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.36 (d, J = 7.2 Hz, 1H), 8.27 (s, 1H), 7.64 (s, 1H), 7.59 (s, 1H), 7.16 (s, 1H), 7.05 (s, 1H), 6.94 (dd, J = 1.6, 7.2 Hz, 1H), 6.56 (s, 1H), 4.39 - 4.33 (m, 1H), 4.24 - 4.17 (m, 1H), 4.13 - 4.03 (m, 2H), 4.01 - 3.95 (m, 2H), 2.59 (s, 3H), 2.55 (s, 3H), 2.43 (s, 3H), 2.12 - 2.01 (m, 1H), 1.92 - 1.82 (m, 1H). 255

Example 219: (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(8-oxaspir o[4.4]nonan-7- ylmethoxy)-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. s prepared (7 mg, 7% yield) by the similar method of Example 188 by using Intermediate 16 instead of Intermediate 7 and ((2R,3S)-3-hydroxytetrahydrofuran- 2-yl)methyl 4-methylbenzenesulfonate instead of (4,4-difluoro-1-hydroxycyclohexyl)methyl 4- methylbenzenesulfonate. Rac-5-(5-(2-oxaspiro[4.4]nonan-3-ylmethoxy)-2-methylpyridin- 4-yl)- N-(2,6-dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine (180 mg, 0.371 mmol) was purified by SFC-11 over DAICEL CHIRALPAK AD 250 mm x 30 mm x 10 µm (eluent: 45% to 45% (v/v) EtOH with 0.1% NH ₃ •H ₂ O in supercritical CO ₂ ). The pure fractions were collected and the volatiles were removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/EtOH, and then lyophilized to dryness to afford fraction (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(8-oxaspir o[4.4]nonan-7-ylmethoxy)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine 2 (74.1 mg, 41%) as second eluting peak. MS (ESI): mass calcd. for C28H32N6O2, 484.3; m/z found, 485.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.36 (d, J = 7.2 Hz, 1H), 8.29 (s, 1H), 7.68 (d, J = 0.8 Hz, 1H), 7.42 (s, 1H), 7.18 (s, 1H), 7.07 (s, 1H), 7.00 (dd, J = 2.0, 7.2 Hz, 1H), 6.57 (s, 1H), 4.36 - 4.29 (m, 1H), 4.12 (d, J = 4.4 Hz, 2H), 3.62 - 3.57 (m, 2H), 2.60 (s, 3H), 2.56 (s, 3H), 2.45 (s, 3H), 1.93 - 1.84 (m, 1H), 1.76 - 1.72 (m, 1H), 1.66 - 1.49 (m, 8H). Example 220: (*S)-5-(5-((6-oxaspiro[3.4]octan-7-yl)methoxy)-2-methylpyrid in-4-yl)-N-(2,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. 256

7 mg, 22%) was prepared as described in Example 188 by using Intermediate 16 instead of Intermediate 7 and (rac-)- 6-oxaspiro[3.4]octan-7-ylmethyl 4- methylbenzenesulfonate was used instead of (4,4-difluoro-1-hydroxycyclohexyl)methyl 4- methylbenzenesulfonate. The racemic material was purified by SFC-11 over DAICEL CHIRALPAK AD 250 mm x 30 mm x 10 µm (eluent: 45% to 45% (v/v) EtOH with 0.1% NH ₃ •H ₂ O in supercritical CO ₂ ) to yield the title compound as a second eluting peak. MS (ESI): mass calcd. for C ₂₇ H ₃₀ N ₆ O ₂ , 470.2; m/z found, 471.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.37 (d, J = 7.2 Hz, 1H), 8.27 (s, 1H), 7.68 (d, J = 0.8 Hz, 1H), 7.51 (s, 1H), 7.18 (s, 1H), 7.06 (s, 1H), 6.99 (dd, J = 2.0, 7.2 Hz, 1H), 6.57 (s, 1H), 4.31 - 4.22 (m, 1H), 4.12 - 4.04 (m, 2H), 3.81 - 3.75 (m, 1H), 3.74 - 3.69 (m, 1H), 2.60 (s, 3H), 2.56 (s, 3H), 2.45 (s, 3H), 2.11 - 2.05 (m, 1H), 2.04 - 1.92 (m, 4H), 1.92 - 1.78 (m, 3H). Example 221: N-[5-[5-[(3-cyanoazetidin-3-yl)methoxy]-2-methyl-4-pyridyl]p yrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. as prepared as a white solid (104 mg, 71% yield) by the similar method of Example 8 by using tert-butyl 3-(hydroxymethyl)-3-methoxyazetidine-1-carboxylate instead of (2S,4R)-tert-butyl 4-hydroxy-2-(trifluoromethyl)piperidine-1-carboxylate and Intermediate 6 instead of Intermediate 4. MS (ESI): mass calcd. for C ₂₂ H ₂₂ N ₆ O ₂ , 402.2; m/z 257

found, 403.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.51 (s, 1H), 8.32 -8.26 (m, 2H), 7.64 (s, 1H), 7.22 (s, 1H), 7.02 (s, 1H), 7.01 -6.97 (m, 1H), 4.46 (s, 2H), 4.05 (d, J = 8.0 Hz, 2H), 3.56 (d, J = 8.0 Hz, 2H), 2.58 (s, 3H), 1.64 - 1.52(m, 1H), 1.19 - 1.11 (m, 2H), 0.98 - 0.85 (m, 2H). Example 222: (*S)-N-[5-[5-[(3-hydroxypyrrolidin-3-yl)methoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 46 mg, 7.1%) was prepared as described in Example 188 by using tert-butyl 3-hydroxy-3-((tosyloxy)methyl)pyrrolidine-1-carboxylate instead of (4,4-difluoro-1- hydroxycyclohexyl)methyl 4-methylbenzenesulfonate. The Boc protecting group was removed using 1:3 TFA:DCM, followed by an SFC purification step similar to that described in Example 5, to afford a white solid. MS (ESI): mass calcd. for C ₂₂ H ₂₅ N ₅ O ₃ , 407.2; m/z found, 408.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.61 (br. s., 1H), 8.27 (s, 1H), 8.22 (d, J = 7.6 Hz, 1H), 7.61 (s, 1H), 7.17 (s, 1H), 6.95 (s, 1H), 6.88 (dd, J = 1.6, 7.2 Hz, 1H), 4.22 - 4.10 (m, 2H), 3.28 - 3.18 (m, 1H), 3.07 - 2.89 (m, 3H), 2.56 (s, 3H), 1.91 - 1.86 (m, 2H), 1.57 - 1.44 (m, 1H), 1.14 - 1.05 (m, 2H), 0.89 - 0.82 (m, 2H). Example 223: (*R)-N-[5-[5-[(3-hydroxypyrrolidin-3-yl)methoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 12.6 mg, 1.76%) was prepared as described in Example 188 by using tert-butyl 3-hydroxy-3-((tosyloxy)methyl)pyrrolidine-1-carboxylate instead of (4,4- 258

difluoro-1-hydroxycyclohexyl)methyl 4-methylbenzenesulfonate. The Boc protecting group was removed using 1:3 TFA:DCM, followed by an SFC purification step similar to that described in Example 5, to afford a white solid. MS (ESI): mass calcd. for C ₂₂ H ₂₅ N ₅ O ₃ , 407.2; m/z found, 408.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.72 (br. s., 1H), 8.30 - 8.24 (m, 1H), 8.20 (d, J = 6.4 Hz, 1H), 7.61 (s, 1H), 7.17 (s, 1H), 6.97 - 6.91 (m, 1H), 6.88 (d, J = 7.2 Hz, 1H), 4.23 - 4.10 (m, 2H), 3.28 - 3.18 (m, 1H), 3.09 - 3.02 (m, 1H), 2.99 - 2.89 (m, 2H), 2.56 (s, 3H), 1.93 - 1.89 (m, 2H), 1.55 - 1.42 (m, 1H), 1.13 - 1.07 (m, 2H), 0.87 - 0.81 (m, 2H). Example 224: (1r,4r)-4-((4-(2-((2-ethyl-6-methylpyrimidin-4-yl)amino)pyra zolo[1,5-a]pyridin-5- yl)-6-methylpyridin-3-yl)oxy)cyclohexan-1-ol. ture of (1r,4r)-4-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)cyclohexan-1-ol (Intermediate 12, 100 mg, 0.296 mmol), 4-chloro-2- ethyl-6-methylpyrimidine (50.9 mg, 0.325 mmol), t-BuBRETTPHOS Pd G3 (12.6 mg, 0.0148 mmol), and Cs2CO3 (289 mg, 0.887 mmol) was purged with nitrogen using a vacuum line 3x. Then, 1,4-dioxane [123-91-1] (0.591 mL) was added via the septum. The mixture was cycled through nitrogen/vacuum 3x. Under vacuum, an argon balloon was added, and then the vacuum line was removed. The reaction was heated at 90 °C for 4h. The crude was filtered through silica plug (rinsed with EtOAc, then DMSO/EtOAc). Concentrated, then purified over Basic ISCO (Gemini 5 uM NX-C18110 angstrom LC column 150 x 21.2 mm; 10-100% AcN / 20 mM aq NH3 over 15 min; 40 mL/min). The pure fraction was collected and lyophilized to afford a white solid (54.6 mg, 40%). MS (ESI): mass calcd. for C26H30N6O2, 458.2; m/z found, 459.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.19 (s, 1H), 8.60 – 8.54 (m, 1H), 8.35 (s, 1H), 7.83 – 7.75 (m, 1H), 7.35 (s, 1H), 7.01 (dd, J = 7.2, 2.0 Hz, 1H), 6.98 (s, 1H), 6.92 (s, 1H), 4.53 (d, J 259

= 3.8 Hz, 1H), 4.46 – 4.36 (m, 1H), 3.56 – 3.46 (m, 1H), 2.74 (q, J = 7.6 Hz, 2H), 2.46 (s, 3H), 2.32 (s, 3H), 2.03 – 1.92 (m, 2H), 1.79 – 1.69 (m, 2H), 1.49 – 1.37 (m, 2H), 1.34 – 1.21 (m, 5H). Example 225: (1r,4r)-4-((4-(2-((2-(methoxymethyl)-6-methylpyrimidin-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)o xy)cyclohexan-1-ol. mg, 29%) was prepared as described in Example 224 where 4- chloro-2-(methoxymethyl)-6-methylpyrimidine was used instead of 4-chloro-2-ethyl-6- methylpyrimidine. MS (ESI): mass calcd. for C26H30N6O3, 474.2; m/z found, 475.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.35 (s, 1H), 8.63 – 8.55 (m, 1H), 8.36 (s, 1H), 7.83 – 7.77 (m, 1H), 7.36 (s, 1H), 7.10 (s, 1H), 7.02 (dd, J = 7.2, 2.0 Hz, 1H), 6.91 (s, 1H), 4.52 (d, J = 4.0 Hz, 1H), 4.46 – 4.37 (m, 3H), 3.55 – 3.45 (m, 1H), 3.41 (s, 3H), 2.46 (s, 3H), 2.35 (s, 3H), 2.03 – 1.92 (m, 2H), 1.80 – 1.69 (m, 2H), 1.48 – 1.35 (m, 2H), 1.34 – 1.22 (m, 2H). Example 226: 6-((5-(5-(((1r,4r)-4-hydroxycyclohexyl)oxy)-2-methylpyridin- 4-yl)pyrazolo[1,5- a]pyridin-2-yl)amino)-2,4-dimethylpyridazin-3(2H)-one. mg, 62%) was prepared as described in Example 224 where 6- chloro-2,4-dimethylpyridazin-3(2h)-one was used instead of 4-chloro-2-ethyl-6- methylpyrimidine. MS (ESI): mass calcd. for C25H28N6O3, 460.2; m/z found, 461.2 [M+H] ⁺ . ¹ H 260

NMR (400 MHz, DMSO-d6) δ 9.67 (s, 1H), 8.45 (d, J = 7.1 Hz, 1H), 8.28 (s, 1H), 7.76 – 7.61 (m, 1H), 7.27 (s, 1H), 7.20 – 7.13 (m, 1H), 6.93 (dd, J = 7.2, 2.0 Hz, 1H), 6.80 – 6.74 (m, 1H), 4.45 (d, J = 4.0 Hz, 1H), 4.39 – 4.28 (m, 1H), 3.55 (s, 3H), 3.48 – 3.36 (m, 1H), 2.39 (s, 3H), 2.05 – 1.98 (m, 3H), 1.95 – 1.86 (m, 2H), 1.71 – 1.62 (m, 2H), 1.40 – 1.28 (m, 2H), 1.27 – 1.14 (m, 2H). Example 227: (1r,4r)-4-((6-methyl-4-(2-((6-methyl-2-(methylamino)pyrimidi n-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)pyridin-3-yl)oxy)cycloh exan-1-ol. .4 mg, 35%) was prepared as described in Example 224 where 4- chloro-N,6-dimethylpyrimidin-2-amine was used instead of 4-chloro-2-ethyl-6- methylpyrimidine. MS (ESI): mass calcd. for C25H29N7O2, 459.2; m/z found, 460.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.82 (s, 1H), 8.57 – 8.48 (m, 1H), 8.35 (s, 1H), 7.73 (s, 1H), 7.35 (s, 1H), 7.05 (s, 1H), 6.98 (dd, J = 7.2, 2.0 Hz, 1H), 6.63 (d, J = 5.9 Hz, 1H), 6.22 (s, 1H), 4.51 (d, J = 4.0 Hz, 1H), 4.45 – 4.35 (m, 1H), 3.56 – 3.43 (m, 1H), 2.85 (d, J = 4.7 Hz, 3H), 2.46 (s, 3H), 2.14 (s, 3H), 2.03 – 1.90 (m, 2H), 1.80 – 1.69 (m, 2H), 1.47 – 1.35 (m, 2H), 1.34 – 1.21 (m, 2H). Example 228: 2-methyl-1-[[6-methyl-4-[2-[[6-methyl-2-(methylamino)pyrimid in-4- yl]amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]propan-2 -ol. 61

The title compound (24.4 mg, 16%) was prepared as described in Example 224 where 4- chloro-n,6-dimethylpyrimidin-2-amine was used instead of 4-chloro-2-ethyl-6-methylpyrimidine and 1-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3 -yl)oxy)-2-methylpropan-2-ol (Intermediate 20) was used instead of (1r,4r)-4-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)cyclohexan-1-ol (Intermediate 12). MS (ESI): mass calcd. for C ₂₃ H ₂₇ N ₇ O ₂ , 433.2; m/z found, 434.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.83 (s, 1H), 8.57 – 8.49 (m, 1H), 8.31 (s, 1H), 7.82 (s, 1H), 7.37 (s, 1H), 7.07 – 7.00 (m, 2H), 6.67 – 6.53 (m, 1H), 6.22 (s, 1H), 4.62 (s, 1H), 3.87 (s, 2H), 2.84 (d, J = 4.7 Hz, 3H), 2.46 (s, 3H), 2.13 (s, 3H), 1.15 (s, 6H). Example 229: 1-[[4-[2-[(2-cyclopropyl-6-methyl-pyrimidin-4-yl)amino]pyraz olo[1,5-a]pyridin- 5-yl]-6-methyl-3-pyridyl]oxy]-2-methyl-propan-2-ol. mg, 36%) was prepared as described in Example 224 where 4- chloro-2-cyclopropyl-6-methylpyrimidine was used instead of 4-chloro-2-ethyl-6- methylpyrimidine and 1-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3 -yl)oxy)-2- methylpropan-2-ol (Intermediate 20) was used instead of (1r,4r)-4-((4-(2-aminopyrazolo[1,5- a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)cyclohexan-1-ol (Intermediate 12). MS (ESI): mass calcd. for C ₂₅ H ₂₈ N ₆ O ₂ , 444.2; m/z found, 445.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.15 (s, 1H), 8.61 - 8.54 (m, 1H), 8.32 (s, 1H), 7.93 - 7.83 (m, 1H), 7.39 (s, 1H), 7.09 (dd, J = 7.2, 2.0 Hz, 1H), 6.86 (s, 2H), 4.64 (s, 1H), 3.88 (s, 2H), 2.47 (s, 3H), 2.28 (s, 3H), 2.10 - 1.99 (m, 1H), 1.17 (s, 6H), 1.06 - 0.94 (m, 4H). Example 230: (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(9-oxaspir o[4.4]nonan-8- ylmethoxy)-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. 262

s prepared by the similar method of Example 188 by using Intermediate 16 instead of Intermediate 7 and 1-oxaspiro[4.4]nonan-2-ylmethyl 4- methylbenzenesulfonate instead of (4,4-difluoro-1-hydroxycyclohexyl)methyl 4- methylbenzenesulfonate; 5-(5-(1-oxaspiro[4.4]nonan-2-ylmethoxy)-2-methylpyridin-4-yl )-N- (2,6-dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine (233 mg, 0.481 mmol) was purified by SFC-22 over DAICEL CHIRALPAK AD 250 mm x 50 mm x 10 µm (eluent: 50% to 50% (v/v) EtOH with 0.1% NH3•H2O in supercritical CO2). The pure fractions were collected and the volatiles were removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/EtOH, and then lyophilized to dryness to afford fraction (*R)-N- (2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(9-oxaspiro[4.4]n onan-8-ylmethoxy)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine (70.3 mg, 30%) and title compound (70.2 mg, 30%). MS (ESI): mass calcd. for C ₂₈ H ₃₂ N ₆ O ₂ , 484.3; m/z found, 485.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.21 (s, 1H), 8.57 (d, J = 6.8 Hz, 1H), 8.34 (s, 1H), 7.92 (d,J = 0.8 Hz 1H), 7.36 (s, 1H), 7.05 (dd, J = 2.0, 7.2 Hz, 1H), 6.98 (br. s., 1H), 6.88 (br. s., 1H), 4.22 - 4.14 (m, 2H), 4.11 - 4.02 (m, 1H), 2.47 (s, 3H), 2.46 (s, 3H), 2.30 (s, 3H), 2.05 - 1.93 (m, 1H), 1.83 - 1.73 (m, 3H), 1.72 - 1.59 (m, 4H), 1.58 - 1.43 (m, 4H). Example 231: (*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(9-oxaspir o[4.4]nonan-8- ylmethoxy)-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. 263

he other isolated isomer from the the SFC purification step in Example 230. MS (ESI): mass calcd. for C ₂₈ H ₃₂ N ₆ O ₂ , 484.3; m/z found, 485.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.21 (s, 1H), 8.57 (d, J = 7.2 Hz, 1H), 8.34 (s, 1H), 7.92 (d, J = 0.8 Hz, 1H), 7.36 (s, 1H), 7.05 (dd, J = 2.0, 7.2 Hz, 1H), 6.98 (br. s., 1H), 6.88 (br. s., 1H), 4.22 - 4.14 (m, 2H), 4.09 - 4.02 (m, 1H), 2.47 (s, 3H), 2.46 (s, 3H), 2.30 (s, 3H), 2.03 - 1.93 (m, 1H), 1.85 - 1.73 (m, 3H), 1.72 - 1.59 (m, 4H), 1.57 - 1.43 (m, 4H). Example 232: (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[(2-methyl tetrahydrofuran-2- yl)methoxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. s prepared by the similar method of Example 188 and using Intermediate 16 instead of Intermediate 7 and using (2-methyltetrahydrofuran-2-yl)methyl 4- methylbenzenesulfonate instead of (4,4-difluoro-1-hydroxycyclohexyl)methyl 4- methylbenzenesulfonate. A subsequent SFC purification step, similar to that described in Example 5, yielded the title compound (15.1 mg, 3.2%). MS (ESI): mass calcd. for C25H28N6O2, 444.2; m/z found, 445.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.22 (s, 1H), 8.61 (d, J = 7.2 Hz, 1H), 8.34 (s, 1H), 7.83 (d, J = 0.8 Hz, 1H), 7.36 (s, 1H), 7.07 - 6.99 (m, 2H), 6.84 (s, 264

1H), 4.04 - 3.95 (m, 2H), 3.78 - 3.64 (m, 2H), 2.47 (s, 3H), 2.46 (s, 3H), 2.30 (s, 3H), 2.03 - 1.89 (m, 1H), 1.88 - 1.77 (m, 2H), 1.66 - 1.56 (m, 1H), 1.19 (s, 3H). Example 233: N-[5-[5-[(3-methoxyazetidin-3-yl)methoxy]-2-methyl-4-pyridyl ]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. as prepared as a white solid (30 mg, 7.4%) by the similar method of Example 8 by using tert-butyl 3-(hydroxymethyl)-3-methoxyazetidine-1-carboxylate instead of (2S,4R)-tert-butyl 4-hydroxy-2-(trifluoromethyl)piperidine-1-carboxylate and Intermediate 6 instead of Intermediate 4. MS (ESI): mass calcd. for C22H25N5O3, 407.2; m/z found, 408.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.11 (s, 1H), 8.56 (d, J = 7.2 Hz, 1H), 8.42 (s, 1H), 7.87 (s, 1H), 7.38 (s, 1H), 7.07 (dd, J = 2.0, 7.2 Hz, 1H), 6.86 (s, 1H), 4.38 (s, 2H), 3.50 (d, J = 8.4 Hz, 2H), 3.27 (d, J = 8.4 Hz, 2H), 3.15 (s, 3H), 2.47 (s, 3H), 2.00 - 1.88 (m, 1H), 0.85 - 0.79 (m, 4H). Example 234: (1R,2R)-2-methyl-N-[5-[2-methyl-5-[[(1R,4R)-5-oxa-2-azabicyc lo[2.2.1]heptan- 4-yl]methoxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopro panecarboxamide. mg, 78%) was prepared as described in Example 238 where (1R,2R)-N-(5-(5-fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]p yridin-2-yl)-2- methylcyclopropane-1-carboxamide was used instead of N-(2,6-dimethylpyrimidin-4-yl)-5-(5- fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. The Boc protecting group was removed using 10:1 TFA:DCM. The crude reaction was titurated with hexane/DCM to afford a 265

white solid. MS (ESI): mass calcd. for C24H27N5O3, 433.2; m/z found, 434.3 [M+H] ⁺ . ¹ H NMR (400 MHz, CD3OD) δ 8.43 – 8.38 (m, 1H), 8.28 (s, 1H), 7.85 – 7.81 (m, 1H), 7.39 (s, 1H), 7.08 (dd, J = 7.3, 2.0 Hz, 1H), 6.88 (s, 1H), 4.48 (s, 2H), 3.94 – 3.83 (m, 2H), 3.71 (s, 1H), 3.05 – 2.94 (m, 2H), 2.53 (s, 3H), 1.91 – 1.84 (m, 1H), 1.82 – 1.75 (m, 1H), 1.64 – 1.56 (m, 1H), 1.45 – 1.34 (m, 1H), 1.23 – 1.14 (m, 4H), 0.77 – 0.70 (m, 1H). Example 235: N-(6-cyclopropylpyridazin-3-yl)-5-[2-methyl-5-[[(1R,4R)-2-me thyl-5-oxa-2- azabicyclo[2.2.1]heptan-4-yl]methoxy]-4-pyridyl]pyrazolo[1,5 -a]pyridin-2-amine. .3 mg, 36%) was prepared as described in Example 248 (Step A) and Example 249 (Step B). In Step A, N-(6-cyclopropylpyridazin-3-yl)-5-(5-fluoro-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-amine was used instead of N-(5-(5-fluoro-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanec arboxamide. The Boc protecting group was removed using 10:1 TFA:DCM. The crude reaction was titurated with hexane/DCM to afford a white solid. The reductive methylation (Step B) was as described in Example 249. MS (ESI): mass calcd. for C ₂₇ H ₂₉ N ₇ O ₂ , 483.2; m/z found, 484.3 [M+H] ⁺ . ¹ H NMR (400 MHz, CD3OD) δ 8.46 – 8.39 (m, 1H), 8.26 (s, 1H), 7.83 – 7.77 (m, 1H), 7.65 (d, J = 9.3 Hz, 1H), 7.40 (s, 1H), 7.29 (d, J = 9.3 Hz, 1H), 7.03 (dd, J = 7.2, 2.0 Hz, 1H), 6.85 (s, 1H), 4.45 – 4.38 (m, 2H), 4.15 – 4.11 (m, 1H), 3.77 (dd, J = 8.1, 1.9 Hz, 1H), 3.49 – 3.45 (m, 1H), 2.90 (d, J = 10.1 Hz, 1H), 2.67 (dd, J = 10.2, 1.5 Hz, 1H), 2.53 (s, 3H), 2.41 (s, 3H), 2.21 – 2.16 (m, 1H), 1.99 – 1.93 (m, 1H), 1.85 – 1.79 (m, 1H), 1.11 – 1.05 (m, 2H), 1.01 – 0.94 (m, 2H). Example 236: 5-[2-methyl-5-[[(1R,4R)-2-methyl-5-oxa-2-azabicyclo[2.2.1]he ptan-4- yl]methoxy]-4-pyridyl]-N-(5-methylpyrazin-2-yl)pyrazolo[1,5- a]pyridin-2-amine. 266

1.7 mg, 31%) was prepared as described in Example 248 (Step A) and Example 249 (Step B). In Step A, 5-(5-fluoro-2-methylpyridin-4-yl)-N-(5-methylpyrazin-2- yl)pyrazolo[1,5-a]pyridin-2-amine was used instead of N-(5-(5-fluoro-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. The Boc protecting group was removed using 10:1 TFA:DCM. The crude reaction was titurated with hexane/DCM to afford a white solid. The reductive methylation (Step B) was as described in Example 249. MS (ESI): mass calcd. for C ₂₅ H ₂₇ N ₇ O ₂ , 457.2; m/z found, 458.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CD ₃ OD) δ 8.55 (d, J = 1.5 Hz, 1H), 8.45 – 8.41 (m, 1H), 8.26 (s, 1H), 8.15 – 8.11 (m, 1H), 7.80 – 7.76 (m, 1H), 7.39 (s, 1H), 7.02 (dd, J = 7.3, 2.0 Hz, 1H), 6.80 (d, J = 0.9 Hz, 1H), 4.43 – 4.39 (m, 2H), 4.14 – 4.10 (m, 1H), 3.76 (dd, J = 8.1, 1.9 Hz, 1H), 3.47 (s, 1H), 2.93 – 2.88 (m, 1H), 2.67 (dd, J = 10.2, 1.6 Hz, 1H), 2.53 (s, 3H), 2.44 (s, 3H), 2.41 (s, 3H), 1.99 – 1.94 (m, 1H), 1.84 – 1.79 (m, 1H). Example 237: N-[5-[2-methyl-5-[[(1S,4S)-2-methyl-5-oxa-2-azabicyclo[2.2.1 ]heptan-4- yl]methoxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropa necarboxamide. was obtained using the reductive methylation conditions described in Example 249, and using Example 253 instead of N-[5-[2-methyl-5-[[(1R,4R)-5-oxa-2- azabicyclo[2.2.1]heptan-4-yl]methoxy]-4-pyridyl]pyrazolo[1,5 -a]pyridin-2- yl]cyclopropanecarboxamide. MS (ESI): mass calcd. for C ₂₄ H ₂₇ N ₅ O ₃ , 433.2; m/z found, 434.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CD3OD) δ 8.44 - 8.40 (m, 1H), 8.26 (s, 1H), 7.84 - 7.81 (m, 1H), 7.38 (s, 1H), 7.07 (dd, J = 7.3, 2.0 Hz, 1H), 6.93 - 6.87 (m, 1H), 4.45 - 4.37 (m, 2H), 4.11 (dd, J 267

= 8.1, 1.1 Hz, 1H), 3.76 (dd, J = 8.1, 1.9 Hz, 1H), 3.49 - 3.45 (m, 1H), 2.90 (d, J = 10.1 Hz, 1H), 2.66 (dd, J = 10.2, 1.5 Hz, 1H), 2.53 (s, 3H), 2.41 (s, 3H), 1.98 - 1.93 (m, 1H), 1.91 - 1.83 (m, 1H), 1.82 - 1.78 (m, 1H), 1.02 - 0.97 (m, 2H), 0.93 - 0.86 (m, 2H). Example 238: N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[[(1R,4R)-5-oxa -2- azabicyclo[2.2.1]heptan-4-yl]methoxy]-4-pyridyl]pyrazolo[1,5 -a]pyridin-2-amine. taining a stir bar was added N-(2,6-dimethylpyrimidin-4-yl)-5- (5-fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-amin e (Intermediate 15, 100 mg, 0.287 mmol), tert-butyl (1R,4R)-1-(hydroxymethyl)-2-oxa-5-azabicyclo[2.2.1]heptane-5 -carboxylate (98.7 mg, 1.431 mmol) and DMA (2 mL). NaH (60% dispersion in mineral oil) (68.8 mg, 1.72 mmol) was added and the reaction mixture was stirred at room temperature for 2 minutes before placing the vial on a pre-heated block at 90 °C. The reaction mixture was heated for 1 h, cooled to RT, extracted with water (20 mL) and 10 % MeOH/DCM (2 x 50 mL). The combined organic layers were dried (MgSO4) and concentrated. The residue was treated with 1:1 trifluoroacetic acid (2 mL) : DCM (2 mL) and the reaction mixture was stirred at room-temperature for 1 h. The reaction mixture was concentrated to dryness under reduced pressure to afford the crude product, then purified by reverse phase basic HPLC (H ₂ O, CH ₃ CN, NH ₄ OH). Fractions containing the title compound were combined, concentrated and lyophilized from 1:1 CH3CN:water to provide the title compound as a white solid (104 mg, 79%). MS (ESI): mass calcd. for C ₂₅ H ₂₇ N ₇ O ₂ , 457.5; m/z found, 458.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) d 10.12 (s, 1H), 8.52 (d, J = 7.2 Hz, 1H), 8.30 (s, 1H), 7.83 – 7.75 (m, 1H), 7.31 (s, 1H), 6.99 (dd, J = 7.2, 2.0 Hz, 1H), 6.96 (s, 1H), 6.78 (s, 1H), 4.39 (s, 2H), 3.72 (dd, J = 6.9, 1.8 Hz, 1H), 3.62 (d, J = 6.9 Hz, 1H), 3.49 – 3.44 (m, 1H), 2.86 – 2.72 (m, 2H), 2.39 (d, J = 6.4 Hz, 6H), 2.23 (s, 3H), 1.63 – 1.52 (m, 2H). 268

Example 239: 4-[[6-methyl-4-[2-(1H-pyrrolo[2,3-b]pyridin-6-ylamino)pyrazo lo[1,5-a]pyridin- 5-yl]-3-pyridyl]oxy]cyclohexanol. A mixture of (1r,4r)-4-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylp yridin-3- yl)oxy)cyclohexan-1-ol (Intermediate 12) (105 mg, 0.310 mmol), 6-bromo-1H-pyrrolo[2,3- b]pyridine (67.2 mg, 0.341 mmol), t-BuBrettPhos Pd G3 (13.3 mg, 0.016 mmol), and Cs ₂ CO ₃ (303 mg, 0.931 mmol) was placed in a Biotage vial: The capped vial was then evacuated and back-filled with N2. The vial was evacuated again, and then an argon balloon was inserted and the solvent dioxane (0.6 mL) was added. The mixture was heated at 90 °C for 16 hr. The mixture was cooled down, solids were filtered off and rinsed with DMSO. The filtrate was purified over Basic ISCO (Gemini 5 uM NX-C18110 angstrom LC column 150 x 21.2 mm; 10- 100% CH ₃ CN / 20 mM aq NH ₃ over 15 min; 40 mL/min) and lyophilized providing the title compound (75.7 mg, 53.7%). MS (ESI): mass calcd. for C26H26N6O2, 454.5; m/z found, 455.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) d 11.12 (s, 1H), 9.58 (s, 1H), 8.45 (d, J = 7.1, 0.9 Hz, 1H), 8.29 (s, 1H), 7.71 (dd, J = 8.4, 0.7 Hz, 1H), 7.67 – 7.62 (m, 1H), 7.28 (s, 1H), 7.08 – 7.01 (m, 2H), 6.93 – 6.82 (m, 2H), 6.25 – 6.19 (m, 1H), 4.45 (d, J = 4.0 Hz, 1H), 4.39 – 4.31 (m, 1H), 3.48 – 3.39 (m, 1H), 2.40 (s, 3H), 1.96 – 1.87 (m, 2H), 1.72 – 1.63 (m, 2H), 1.40 – 1.29 (m, 2H), 1.27 – 1.17 (m, 2H). Example 240: 2-methyl-1-[[6-methyl-4-[2-(1H-pyrrolo[2,3-b]pyridin-6-ylami no)pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]propan-2-ol. 269 opyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)-2- methylpropan-2-ol (102 mg, 0.327 mmol), 6-bromo-1H-pyrrolo[2,3-b]pyridine (70.7 mg, 0.359 mmol), t-BuBrettPhos Pd G3 (14.0 mg, 0.016 mmol), and Cs ₂ CO ₃ (319 mg, 0.980 mmol) was placed in a Biotage vial: The capped vial was then evacuated and back-filled with N ₂ . The vial was evacuated again, and then an argon balloon was inserted and the solvent dioxane (0.6 mL) was added. The mixture was heated at 90 °C for 16 hr. The mixture was cooled down, solids were filtered off and rinsed with DMSO. The filtrate was purified over Basic ISCO (Gemini 5 uM NX-C18110 angstrom LC column 150 x 21.2 mm; 10-100% AcN / 20 mM aq NH3 over 15 min; 40 mL/min) and lyophilized providing the title compound (51.9 mg, 37.0%). MS (ESI): mass calcd. for C ₂₄ H ₂₄ N ₆ O ₂ , 428.5; m/z found, 429.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 11.25 – 11.16 (m, 1H), 9.65 (s, 1H), 8.56 – 8.49 (m, 1H), 8.32 (s, 1H), 7.80 – 7.74 (m, 2H), 7.37 (s, 1H), 7.13 – 7.10 (m, 1H), 7.09 – 7.07 (m, 1H), 7.00 (dd, J = 7.2, 2.0 Hz, 1H), 6.97 (d, J = 8.5 Hz, 1H), 6.30 (dd, J = 3.4, 1.9 Hz, 1H), 4.63 (s, 1H), 3.88 (s, 2H), 2.47 (s, 3H), 1.17 (s, 6H). Example 241: 4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]pyrazolo[ 1,5-a]pyridin-2- yl]amino]-2,6-dimethoxy-N-(2,2,2-trifluoroethyl)benzamide. N _N HN r)-4-hydroxycyclohexyl)oxy)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-2,6-dimethoxybenzoate. A mixture of (1r,4r)-4-((4-(2- aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)c yclohexan-1-ol (Intermediate 12) 270

(500 mg, 1.48 mmol), methyl 4-bromo-2,6-dimethoxybenzoate (488 mg, 1.77 mmol), BrettPhos Pd G3 (134 mg, 0.148 mmol), and Cs2CO3 (1.44 g, 0.443 mmol) was placed in a Biotage vial. The capped vial was then evacuated and back-filled with N ₂ . The vial was evacuated again, and then an argon balloon was inserted and the solvent dioxane (15 mL) was added. The mixture was heated at 90 °C for 4 hr. The mixture was cooled down, and solids were filtered off. The crude was diluted with brine and EtOAc. The organic layer was separated. and concentrated under vacuo. The residue was flashed with 10% MeOH/ CH ₂ Cl ₂ providing the title compound (499 mg, 63.4%). MS (ESI): mass calcd. for C29H32N4O6, 532.2; m/z found, 533.2 [M+H] ⁺ . Step B: 4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]pyrazolo[ 1,5-a]pyridin-2- yl]amino]-2,6-dimethoxy-N-(2,2,2-trifluoroethyl)benzamide. A solution of iPrMgCl (2M, 0.2 mL, 0.39 mmol) was added dropwisely to a stirred mixture of methyl 4-((5-(5-(((1r,4r)-4- hydroxycyclohexyl)oxy)-2-methylpyridin-4-yl)pyrazolo[1,5-a]p yridin-2-yl)amino)-2,6- dimethoxybenzoate (70 mg, 0.13 mmol), 2,2,2-trifluoroethan-1-amine (0.19 mL, 0.39 mmol) in THF (8 mL), The mixture was stirred at room temperature for 1h.The reaction was quenched with sat. aq. NH4Cl (3 mL) and extracted with EtOAc (3 x 10 mL). The combined organics were dried with Na ₂ SO ₄ , filtered and concentrated. The residue was then purified by preparative TLC with 0-5% MeOH in DCM, to provide the title compound (56 mg, 71%) MS (ESI): mass calcd. for C30H32F3N5O5, 599.6; m/z found, 600.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) d 8.25 (d, J = 7.2 Hz, 1H), 8.09 (s, 1H), 7.49 (dd, J = 1.9, 0.8 Hz, 1H), 7.19 (s, 1H), 6.84 – 6.78 (m, 1H), 6.74 (s, 2H), 6.04 (s, 1H), 4.29 – 4.19 (m, 1H), 3.71 (s, 6H), 3.54 – 3.49 (m, 1H), 3.47 – 3.39 (m, 1H), 2.39 (s, 3H), 1.98 – 1.88 (m, 2H), 1.84 – 1.72 (m, 2H), 1.43 – 1.31 (m, 2H), 1.32 – 1.24 (m, 2H). Example 242: N-cyclopropyl-4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-2-methoxy-benzami de. 271

0.52 mL) was added dropwisely to a stirred mixture of methyl 4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]pyrazolo[ 1,5-a]pyridin-2- yl]amino]-2-methoxy-benzoate (Example 246) (87 mg, 0.17 mmol), cyclopropyl amine (49 mg, 0.86 mmol) in THF (8 mL). The mixture was stirred at RT for 1h.The reaction was quenched with sat. aq. NH ₄ Cl (3 mL) and extracted with EtOAc (3 x 10 mL). The combined organics were dried with Na2SO4, filtered and concentrated. The residue was then purified by preparative TLC with 0-5% MeOH in DCM, to provide the title compound (47 mg, 52%) MS (ESI): mass calcd. for C ₃₀ H ₃₃ N ₅ O ₄ , 527.6; m/z found, 528.3 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) d 8.27 (d, J = 7.1 Hz, 1H), 8.10 (s, 1H), 7.78 (d, J = 8.6 Hz, 1H), 7.50 (d, J = 1.8 Hz, 1H), 7.31 (d, J = 2.0 Hz, 1H), 7.20 (s, 1H), 6.92 (dd, J = 8.6, 1.9 Hz, 1H), 6.80 (dd, J = 7.1, 1.8 Hz, 1H), 6.06 (s, 1H), 4.32 – 4.17 (m, 1H), 3.87 (s, 3H), 3.58 – 3.46 (m, 1H), 2.77 – 2.67 (m, 1H), 2.40 (s, 3H), 2.00 – 1.91 (m, 2H), 1.83 – 1.67 (m, 2H), 1.45 – 1.32 (m, 2H), 1.32 – 1.19 (m, 2H), 0.75 – 0.64 (m, 2H), 0.54 – 0.38 (m, 2H). Example 243: N-ethyl-4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]p yrazolo[1,5- a]pyridin-2-yl]amino]-2,6-dimethoxy-benzamide. ((1r,4r)-4-hydroxycyclohexyl)oxy)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-2,6-dimethoxybenzoate. A mixture of (1r,4r)-4-((4-(2- 272

aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)ox y)cyclohexan-1-ol (Intermediate 12) (500 mg, 1.48 mmol), methyl 4-bromo-2,6-dimethoxybenzoate (488 mg, 1.77 mmol), BrettPhos Pd G3 (134 mg, 0.148 mmol), and Cs ₂ CO ₃ (1.44 g, 0.443 mmol) was placed in a Biotage vial: The capped vial was then evacuated and back-filled with N ₂ . The vial was evacuated again, and then an argon balloon was inserted and the solvent dioxane (15 mL) was added. The mixture was heated at 90 °C for 4 hr. The mixture was cooled down, and solids were filtered off. The crude product was diluted with brine and EtOAc. The organic layer was separated. and concentrated under vacuo. The residue was flashed with 10% MeOH/ CH2Cl2 providing the title compound (499 mg, 63.4%). MS (ESI): mass calcd. for C29H32N4O6, 532.2; m/z found, 533.2 [M+H] ⁺ . Step B: 4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]pyrazolo[ 1,5-a]pyridin-2- yl]amino]-2,6-dimethoxy-N-(2,2,2-trifluoroethyl)benzamide. A solution of iPrMgCl (2M, 0.18 mL, 0.37 mmol) was added dropwise to a stirred mixture of methyl 4-((5-(5-(((1r,4r)-4- hydroxycyclohexyl)oxy)-2-methylpyridin-4-yl)pyrazolo[1,5-a]p yridin-2-yl)amino)-2,6- dimethoxybenzoate (65 mg, 0.12 mmol), and ethyl amine (2M, 0.3 mL, 0.6 mmol) in THF (8 mL), The mixture was stirred at RT for 1h.The reaction was quenched with sat. aq. NH ₄ Cl (3 mL) and extracted with EtOAc (3 x 10 mL). The combined organics were dried with Na ₂ SO ₄ , filtered and concentrated. The residue was then purified by preparative TLC with 0-5% MeOH in DCM, to provide the title compound (36 mg, 54%) MS (ESI): mass calcd. for C30H35N5O5, 545.6; m/z found, 546.3 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.27 (d, J = 7.2 Hz, 1H), 8.12 (s, 1H), 7.55 – 7.45 (m, 1H), 7.23 (s, 1H), 6.84 – 6.78 (m, 1H), 6.74 (s, 2H), 6.06 (s, 1H), 4.33 – 4.19 (m, 1H), 3.72 (s, 6H), 3.56 – 3.48 (m, 1H), 3.28 – 3.22 (m, 2H), 2.41 (s, 3H), 2.02 – 1.91 (m, 2H), 1.77 – 1.68 (m, 2H), 1.46 – 1.36 (m, 2H), 1.32 – 1.24 (m, 2H), 1.09 (t, J = 7.3 Hz, 3H). Example 244: 6-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]amino]-N,N,4-trimethyl-pyridine-2-carboxamide . 273

ethylpicolinamide. To a 0 °C solution of 6-chloro-4- methylpicolinic acid (858 g, 5.00 mmol) in DCM (13 mL) were added Et3N (2.08 mL, 15.0 mmol), ethylamine (270 mg, 6.00 mmol) and HATU (2.47 g, 6.50 mmol). The mixture was stirred for 2h. The mixture was partioned between DCM/NaHCO ₃ saturated solution (20 mL//10 mL). The organic layer was separated and concentrated providing the crude product as the solid. The crude product was washed with CH3CN (5mL) providing the crude title compound (610 mg, 61.4%). MS (ESI): mass calcd. for C ₉ H ₁₁ ClN ₂ O, 198.06; m/z found, 199.1 [M+H] ⁺ . Step B. 6-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]amino]-N,N,4-trimethyl-pyridine-2-carboxamide . The mixture of (1-((4-(2- aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)- 2-methylpropan-2-ol (100 mg, 0.320 mmol), 6-chloro-N,N,4-trimethylpicolinamide (70 mg, 0.35 mmol), BrettPhos Pd G3 (29 mg, 0.032 mmol), and Cs2CO3 (312 mg, 0.960 mmol) was placed in a Biotage vial. The capped vial was then evacuated and back-filled with N ₂ . The vial was evacuated again, and then an argon balloon was inserted and the solvent dioxane (5 mL) was added. The mixture was heated at 90 °C for 2 hr. The mixture was cooled down, and solids were filtered off. The crude product was diluted with brine and EtOAc. The organic layer was separated. and concentrated under vacuo. The residue was flashed with 10% MeOH/ CH ₂ Cl ₂ providing the title compound (51 mg, 34%). MS (ESI): mass calcd. for C26H30N6O3, 474.6; m/z found, 475.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.30 – 8.20 (m, 1H), 8.08 (s, 1H), 7.62 (dd, J = 2.0, 0.9 Hz, 1H), 7.20 (s, 1H), 7.04 (t, J = 1.1 Hz, 1H), 6.87 (dd, J = 7.2, 2.0 Hz, 1H), 6.75 – 6.64 (m, 2H), 3.79 (s, 2H), 3.03 – 2.96 (2 s, 6H), 2.38 (s, 3H), 2.22 (s, 3H), 1.14 (s, 6H). Example 245: N-cyclopropyl-4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-2,6-dimethoxy-ben zamide. 274

opyl-2,6-dimethoxybenzamide. To a 0 °C solution of 4- bromo-2,6-dimethoxybenzoic acid (1.08 g, 4.13 mmol) in DCM (13 mL) were added Et ₃ N (1.72 mL, 12.4 mmol), cyclopropyl amine (283 mg, 4.96 mmol) and HATU (2.04g, 5.38 mmol). The mixture was stirred for 2h. The mixture was partioned between DCM/NaHCO ₃ saturated solution (20 mL//10 mL). The organic layer was separated and concentrated providing the crude product as the solid. The crude product was washed with CH3CN (5mL) providing the title compound (1.10g, 88.6%). MS (ESI): mass calcd. for C12H14BrNO3, 299.01; m/z found, 300.0 [M+H] ⁺ .1H NMR (500 MHz, Chloroform-d) δ 6.69 (s, 2H), 5.77 (s, 1H), 3.79 (s, 6H), 2.96 – 2.84 (m, 1H), 0.88 – 0.76 (m, 2H), 0.64 – 0.54 (m, 2H). Step B. N-ethyl-4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]p yrazolo[1,5- a]pyridin-2-yl]amino]-2,6-dimethoxy-benzamide. A mixture of (1r,4r)-4-((4-(2- aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)c yclohexan-1-ol (Intermediate 12) (100 mg, 0.296 mmol), 4-bromo-N-cyclopropyl-2,6-dimethoxybenzamide (88.7 mg, 0.296 mmol), BrettPhos Pd G3 (15.3 mg, 0.018 mmol), and Cs2CO3 (176 mg, 0.541 mmol) was in a Biotage vial: The capped vial was then evacuated and back-filled with N2. The vial was evacuated again, and then an argon balloon was inserted and the solvent dioxane (5 mL) was added. The mixture was heated at 90 °C for 2 hr. The mixture was cooled down, and solids were filtered off. The crude product was diluted with brine and EtOAc. The organic layer was separated. and concentrated under vacuo. The residue was flashed with 10% MeOH/CH ₂ Cl ₂ providing the title compound (67 mg, 41%). MS (ESI): mass calcd. for C31H35N5O5, 557.6; m/z found, 558.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.31 – 8.18 (m, 1H), 8.09 (s, 1H), 7.54 – 7.43 (m, 1H), 7.19 (s, 1H), 6.83 – 6.77 (m, 1H), 6.75 (d, J = 23.6 Hz, 2H), 6.03 (d, J = 0.8 Hz, 1H), 4.34 – 4.10 (m, 1H), 3.70 (s, 6H), 3.55 – 3.47 (m, 1H), 2.76 – 2.65 (m, 1H), 2.39 (s, 3H), 1.97 – 1.87 (m, 2H), 1.78 – 1.69 (m, 2H), 1.45 – 1.33 (m, 2H), 1.29 – 1.19 (m, 2H), 0.72 – 0.61 (m, 2H), 0.52 – 0.44 (m, 2H). 275

Example 246: methyl 4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]pyrazolo[ 1,5- a]pyridin-2-yl]amino]-2-methoxy-benzoate. 4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3- yl)oxy)cyclohexan-1-ol (Intermediate 12) (96.0 mg, 0.284 mmol), methyl 4-bromo-2- methoxybenzoate (76.5 mg, 0.312 mmol), BrettPhos Pd G3 (25.7 mg, 0.028 mmol), and Cs ₂ CO ₃ (277 mg, 0.851 mmol) was placed in a Biotage vial: The capped vial was then evacuated and back-filled with N2. The vial was evacuated again, and then an argon balloon was inserted and the solvent dioxane (5 mL) was added. The mixture was heated at 90 °C for 4 hr. The mixture was cooled down, and solids were filtered off. The crude product was diluted with brine and EtOAc. The organic layer was separated. and concentrated under vacuo. The residue was flashed with 10% MeOH/ CH ₂ Cl ₂ providing the title compound (90 mg, 63%). MS (ESI): mass calcd. for C28H30N4O5, 502.6; m/z found, 503.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) d 8.35 – 8.25 (m, 1H), 8.13 (s, 1H), 7.68 (d, J = 8.7 Hz, 1H), 7.59 – 7.51 (m, 1H), 7.29 (d, J = 2.1 Hz, 1H), 7.24 (s, 1H), 6.93 – 6.79 (m, 2H), 6.11 (d, J = 0.8 Hz, 1H), 4.32 – 4.24 (m, 1H), 3.82 (s, 3H), 3.71 (s, 3H), 3.58 – 3.48 (m, 1H), 2.42 (s, 3H), 2.01 – 1.93 (m, 2H), 1.83 – 1.72 (m, 2H), 1.49 – 1.36 (m, 2H), 1.36 – 1.21 (m, 2H). Example 247: 2-ethyl-6-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyr idyl]pyrazolo[1,5- a]pyridin-2-yl]amino]-4-methyl-pyridazin-3-one. 276

l-4-methylpyridazin-3(2H)-one. To a mixture of 6-chloro-4- methylpyridazin-3(2H)-one (1.0 g, 6.9 mmol), Cs2CO3 (5.64 g, 17.3 mmol) in DMF (13.8 mL) was added iodoethane (1.12 mL, 13.8 mmol). The mixture was stirred at 25 °C for 2 hr. The reaction was extracted with EtOAc/water/brine. The organics were then dried with Na ₂ SO ₄ , concentrated, and purified over silica gel: (24 g Gold ISCO column, 20-100% EtOAc / hexanes, 20 min gradient) providing the title compound (971 mg, 81.3%). Step B: 2-ethyl-6-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-4-methyl-pyridazi n-3-one. A mixture of 1-((4-(2- aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)- 2-methylpropan-2-ol (102 mg, 0.327 mmol), 6-chloro-2-ethyl-4-methylpyridazin-3(2H)-one (62.0 mg, 0.359 mmol), t- BuBrettPhos Pd G3 (14.0 mg, 0.016 mmol), and Cs ₂ CO ₃ (319 mg, 0.980 mmol) was placed in a Biotage vial: The capped vial was then evacuated and back-filled with N2. The vial was evacuated again, and then an argon balloon was inserted and the solvent dioxane (0.6 mL) was added. The mixture was heated at 90 °C for 16 hr. The mixture was cooled down, solids were filtered off and rinsed with DMSO. The filtrate was purified over Basic ISCO (Gemini 5 uM NX-C18110 angstrom LC column 150 x 21.2 mm; 10-100% AcN / 20 mM aq NH3 over 15 min; 40 mL/min) and lyophilized providing the title compound (69 mg, 47%). MS (ESI): mass calcd. for C24H28N6O3, 448.5; m/z found, 449.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) d 8.41 – 8.34 (m, 1H), 8.22 (s, 1H), 7.81 – 7.76 (m, 1H), 7.37 (s, 1H), 7.28 – 7.22 (m, 1H), 7.06 (dd, J = 7.2, 2.0 Hz, 1H), 6.90 – 6.82 (m, 1H), 4.19 (q, J = 7.2 Hz, 2H), 3.92 (s, 2H), 2.53 (s, 3H), 2.19 (d, J = 1.3 Hz, 3H), 1.41 (t, J = 7.2 Hz, 3H), 1.26 (s, 6H). Example 248: N-[5-[2-methyl-5-[[(1R,4R)-5-oxa-2-azabicyclo[2.2.1]heptan-4 -yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 277

(1R,4R)-1-(hydroxymethyl)-2-oxa-5-azabicyclo[2.2.1]heptane-5 - carboxylate (325 mg, 1.418 mmol) , DMA (2.5 mL) and NaH (60% dispersion in mineral oil) (257 mg, 6.44 mmol) was stirred at 40-50 °C for 5 min. Then N-(5-(5-fluoro-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (Intermediate 6, 200 mg, 0.644 mmol) was added. The reaction mixture was heated at 50 °C for 4 h, The reaction was cooled to RT, and worked-up with EtOAc/water/brine. The combined organic layers were dried (Na ₂ SO ₄ ) and concentrated. The residue was purified by silica gel (12 g Gold ISCO column, 20-100% EtOAc/hexanes) providing the Boc-protected compound. To the Boc-protected compound in DCM (2.5 mL), CF ₃ COOH (0.5 mL) was added. The reaction mixture was heated at 50 °C for 10 min, The reaction was cooled to RT, and worked-up with saturated NaHCO3 and 10% MeOH/DCM. The combined organic layers were dried (Na2SO4), concentrated and purified by silica gel (4g Gold ISCO column, 0-20% MeOH (with 2M NH ₃ ) / DCM, 15 min gradient) providing (126 mg, 46.7%). MS (ESI): mass calcd. for C23H25N5O3, 419.5; m/z found, 420.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.44 – 8.39 (m, 1H), 8.28 (s, 1H), 7.84 – 7.81 (m, 1H), 7.41 – 7.37 (m, 1H), 7.07 (dd, J = 7.3, 2.0 Hz, 1H), 6.90 (s, 1H), 4.49 (s, 2H), 3.93 – 3.87 (m, 2H), 3.80 (s, 1H), 3.33 – 3.31 (m, 1H), 3.08 – 3.00 (m, 1H), 2.53 (s, 3H), 1.98 – 1.71 (m, 3H), 1.02 – 0.98 (m, 2H), 0.93 – 0.87 (m, 2H). Example 249: N-[5-[2-methyl-5-[[(1R,4R)-2-methyl-5-oxa-2-azabicyclo[2.2.1 ]heptan-4- yl]methoxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropa necarboxamide. 8

A mixture of N-[5-[2-methyl-5-[[(1R,4R)-5-oxa-2-azabicyclo[2.2.1]heptan-4 - yl]methoxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropa necarboxamide (Example 249, 108 mg, 0.257 mmol), paraformaldehyde (34.8 mg, 0.386 mmol) in MeOH (5 mL) was stirred for 15 min. Then NaCNBH ₄ was added. The reaction mixture was stirred at RT at for 2 h, The reaction was worked-up with EtOAc/water. The combined organic layers were dried (Na2SO4) and concentrated. The residue was purified by silica gel (12 g Gold ISCO column, 0-20% MeOH (with 2M NH ₃ ) in DCM, 20 min gradient) providing the title compound (76 mg, 68%). MS (ESI): mass calcd. for C24H27N5O3, 433.5; m/z found, 434.1 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.45 – 8.37 (m, 1H), 8.25 (s, 1H), 7.86 – 7.78 (m, 1H), 7.37 (s, 1H), 7.06 (dd, J = 7.3, 2.0 Hz, 1H), 6.90 (s, 1H), 4.45 – 4.37 (m, 2H), 4.15 – 4.07 (m, 1H), 3.77 (dd, J = 8.2, 1.9 Hz, 1H), 3.53 – 3.47 (m, 1H), 2.91 (d, J = 10.2 Hz, 1H), 2.70 (dd, J = 10.2, 1.6 Hz, 1H), 2.52 (s, 3H), 2.43 (s, 3H), 2.01 – 1.94 (m, 1H), 1.90 – 1.84 (m, 1H), 1.84 – 1.79 (m, 1H), 1.03 – 0.97 (m, 2H), 0.92 – 0.86 (m, 2H). Example 250: (1R,2R)-2-methyl-N-[5-[2-methyl-5-[[(1R,4R)-2-methyl-5-oxa-2 - azabicyclo[2.2.1]heptan-4-yl]methoxy]-4-pyridyl]pyrazolo[1,5 -a]pyridin-2- yl]cyclopropanecarboxamide. N-(5-(5-(((1R,4R)-2-oxa-5-azabicyclo[2.2.1]heptan-1- yl)methoxy)-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl )-2-methylcyclopropane-1- carboxamide (Example 234; 73 mg, 0.168 mmol), and paraformaldehyde (22.7 mg, 0.253 mmol) in MeOH (3.3 mL) was stirred at 40 °C for 5 min. Then NaCNBH4 (31.7 mg, 0.505 mmol) was added. The reaction mixture was stirred at 40 °C for 1 h, The reaction was worked-up with EtOAc/water/ brine. The combined organic layers were dried (Na ₂ SO ₄ ) and concentrated. The residue was purified by silica gel (4 g Gold ISCO column, 0-10% 2M NH ₃ in MeOH / DCM, 30 min gradient) providing the title compound (55 mg, 73%). MS (ESI): mass calcd. for 279

C25H29N5O3, 447.5; m/z found, 448.3 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) d 8.45 – 8.39 (m, 1H), 8.26 (s, 1H), 7.86 – 7.79 (m, 1H), 7.39 (s, 1H), 7.08 (dd, J = 7.3, 2.0 Hz, 1H), 6.89 (s, 1H), 4.45 – 4.37 (m, 2H), 4.13 – 4.10 (m, 1H), 3.76 (dd, J = 8.1, 1.9 Hz, 1H), 3.46 (s, 1H), 2.89 (d, J = 10.1 Hz, 1H), 2.65 (dd, J = 10.1, 1.5 Hz, 1H), 2.53 (s, 3H), 2.41 (s, 3H), 1.98 – 1.92 (m, 1H), 1.83 – 1.77 (m, 1H), 1.64 – 1.56 (m, 1H), 1.44 – 1.35 (m, 1H), 1.22 – 1.18 (m, 1H), 1.17 (d, J = 6.0 Hz, 3H), 0.76 – 0.71 (m, 1H). Example 251: 5-[2-methyl-5-[[(1S,4S)-5-oxa-2-azabicyclo[2.2.1]heptan-4-yl ]methoxy]-4- pyridyl]-N-(5-methylpyrazin-2-yl)pyrazolo[1,5-a]pyridin-2-am ine. -methylpyridin-4-yl)-N-(5-methylpyrazin-2-yl)pyrazolo[1,5- a]pyridin-2-amine. A mixture of 5-(5-fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2- amine (1.00g, 4.13 mmol), 2-bromo-5-methylpyrazine (785 mg, 4.54 mmol), t-BuBrettPhos Pd G3 (176 mg, 0.206 mmol) and Cs2CO3 (4.03 g, 12.3 mmol) was placed in a vial: The capped vial was then evacuated and back-filled with N2. The vial was evacuated again, and then an argon balloon was inserted and the solvent dioxane (0.6 mL) was added. The mixture was heated at 90 °C for 16 hr. The mixture was cooled down, solids were filtered off, and then worked-up with EtOAc/water/ brine. The crude product was purified over silica gel (silica gel: 40 g Gold ISCO column, 20-100% EtOAc / hexanes, 15 min gradient.) providing the title compound (1.38 g, 57.2%). MS (ESI): mass calcd. for C ₁₈ H ₁₅ FN ₆ , 334.1; m/z found, 334.2 [M+H] ⁺ . Step B: 5-[2-methyl-5-[[(1S,4S)-5-oxa-2-azabicyclo[2.2.1]heptan-4-yl ]methoxy]-4- pyridyl]-N-(5-methylpyrazin-2-yl)pyrazolo[1,5-a]pyridin-2-am ine was prepared in the similar manner of Example 238 where 5-(5-fluoro-2-methylpyridin-4-yl)-N-(5-methylpyrazin-2- yl)pyrazolo[1,5-a]pyridin-2-amine and tert-butyl (1S,4S)-1-(hydroxymethyl)-2-oxa-5- azabicyclo[2.2.1]heptane-5-carboxylate were used instead of N-(2,6-dimethylpyrimidin-4-yl)-5- (5-fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-amin e and tert-butyl (1R,4R)-1- 280

(hydroxymethyl)-2-oxa-5-azabicyclo[2.2.1]heptane-5-carbox ylate. MS (ESI): mass calcd. for C24H25N7O2, 443.5; m/z found, 444.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.56 (d, J = 1.5 Hz, 1H), 8.45 – 8.40 (m, 1H), 8.28 (s, 1H), 8.15 – 8.11 (m, 1H), 7.79 – 7.74 (m, 1H), 7.39 (s, 1H), 7.03 (dd, J = 7.2, 2.0 Hz, 1H), 6.81 – 6.77 (m, 1H), 4.48 (s, 2H), 3.91 (dd, J = 7.6, 1.8 Hz, 1H), 3.86 (d, J = 7.5, 0.9 Hz, 1H), 3.70 – 3.66 (m, 1H), 3.03 – 2.95 (m, 2H), 2.54 (s, 3H), 2.44 (s, 3H), 1.89 – 1.84 (m, 1H), 1.81 – 1.76 (m, 1H). Example 252: N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[[(1R,4R)-5-oxa-2-azabic yclo[2.2.1]heptan- 4-yl]methoxy]-2-(trifluoromethyl)-4-pyridyl]pyrazolo[1,5-a]p yridin-2-amine. luoromethyl)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. To the mixture of 5-chloro-4-iodo-2-(trifluoromethyl)pyridine (1.00 g, 3.25 mmol), tert-butyl (5- (4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazolo[1,5-a] pyridin-2-yl)carbamate (1.32 g, 3.70 mmol) and Bis(diphenylphosphino)ferrocene]dichloropalladium(II) Dichloromethane (68.9 mg, 0.0942 mmol) in dioxane (10 mL), saturated NaHCO ₃ (3 mL) was added. The mixture was heated at 100 °C for 16h. The mixture was cooled down, and concentrated. H2O (20 mL) was added and stirred for 8h. The solids were collected and dried, and then MeOH (10 mL), and HCl (2 mL, 4M in dioxane) were added. The mixture was stirred at RT for 8 h. After concentration the title compound was obtained (650 mg, 63.9%). MS (ESI): mass calcd. for C13H8Cl F3N4, 511.5; m/z found, 512.2 [M+H] ⁺ . Step B: Tert-butyl (1R,,4R)-1-(((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6- (trifluoromethyl)pyridin-3-yl)oxy)methyl)-2-oxa-5-azabicyclo [2.2.1]heptane-5-carboxylate. A mixture of (1R,4R)-1-(hydroxymethyl)-2-oxa-5-azabicyclo[2.2.1]heptane-5 -carboxylate (143 mg, 0.624 mmol) and NaH (60% dispersion in mineral oil; 191 mg, 4.80 mmol) in DMA (1 mL) was stirred at RT for 10 min, after which 5-(5-chloro-2-(trifluoromethyl)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-amine (150 mg, 0.48 mmol) was added. The mixture was then 281

stirred at room temperature for 30 min. Saturated NH4Cl (1 mL) was added carefully. The mixture was extracted with DCM (2x 20 mL). The combined organics were concentrated and the resulting product was purified over silica gel using acetone/DCM providing the title compound (80 mg, 33%). MS (ESI): mass calcd. for C ₂₄ H ₂₆ F ₃ N ₅ O ₄ , 505.19; m/z found, 506.1 [M+H] ⁺ . Step C: N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[[(1R,4R)-5-oxa-2-azabic yclo[2.2.1]heptan- 4-yl]methoxy]-2-(trifluoromethyl)-4-pyridyl]pyrazolo[1,5-a]p yridin-2-amine. A mixture of 4-chloro-2,6-dimethylpyrimidine (19 mg, 0.13 mmol), tert-butyl (1RS,4R)-1-(((4- (2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-(trifluoromethyl)pyri din-3-yl)oxy)methyl)-2-oxa-5- azabicyclo[2.2.1]heptane-5-carboxylate (70 mg, 0.13 mmol), BrettPhos Pd G3 (5.1 mg, 0.0056 mmol), and Cs ₂ CO ₃ (174 mg, 0.535 mmol) was placed in a Biotage vial: The capped vial was then evacuated and back-filled with N2. The vial was evacuated again, and then an argon balloon was inserted and the solvent dioxane (4 mL) was added. The mixture was heated at 150 °C for 1 hr. The mixture was cooled down, and solids were filtered off. The crude product was diluted with brine and EtOAc. The organic layer was separated. and concentrated under vacuo. The residue was flashed with 10% acetone/ CH2Cl2 providing the Boc-protected compound. To the Boc-protected compound in CH ₂ CL ₂ /MeOH (1 mL/1 mL), TFA (0.5 mL) was added. The mixture was stirred at RT for 4h. The mixture was concentrated and purified with FCC (10% (2M NH3 MeOH/DCM) providing the title compound. MS (ESI): mass calcd. for C25H24F3N7O2, 511.5; m/z found, 512.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) d 8.57 (s, 1H), 8.44 (dd, J = 7.3, 1.0 Hz, 1H), 7.89 – 7.81 (m, 2H), 7.09 – 6.95 (m, 2H), 6.86 (s, 1H), 4.65 (s, 2H), 3.97 – 3.83 (m, 2H), 3.73 – 3.66 (m, 1H), 3.08 – 2.90 (m, 2H), 2.52 (s, 3H), 2.36 (s, 3H), 1.94 – 1.72 (m, 2H). Example 253: N-[5-[2-methyl-5-[[(1S,4S)-5-oxa-2-azabicyclo[2.2.1]heptan-4 -yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 2

Step A: Tert-butyl (1S,4S)-1-(((methylsulfonyl)oxy)methyl)-2-oxa-5- azabicyclo[2.2.1]heptane-5-carboxylate. To a mixture of tert-butyl (1S,4S)-1-(hydroxymethyl)-2- oxa-5-azabicyclo[2.2.1]heptane-5-carboxylate (1.00 g, 4.36 mmol) and DMAP (1.33 g, 10.9 mmol) in DCM (4 mL) at 0 °C, methanesulfonyl chloride (0.678 mL, 8.72 mmol) was added. The mixture was stirred at RT for 16 h. The mixture was worked up with EtOAc/water/brine and purified by silica gel (40 g Gold ISCO column: 25-100% EtOAc/hexanes) providing the title compound (1.25 g, 93.3%). Step B. (1S,4S)-1-(((4-bromo-6-methylpyridin-3-yl)oxy)methyl)-2-oxa- 5- azabicyclo[2.2.1]heptane-5-carboxylate. A mixture of tert-butyl (1S,4S)-1- (((methylsulfonyl)oxy)methyl)-2-oxa-5-azabicyclo[2.2.1]hepta ne-5-carboxylate (650 mg, 2.11 mmol), 4-bromo-6-methylpyridin-3-ol (795 mg, 4.23 mmol), and Cs2CO3 (2.07 g, 6.34 mmol) was stirred at 50 °C for 2 hr. The mixture was worked up with EtOAc/water/brine and purified by silica gel (40 g Gold ISCO column: 25-100% EtOAc/hexanes) providing the title compound (882 mg, 97.3%). MS (ESI): mass calcd. For C ₁₇ H ₂₃ BrN ₂ O ₄ , 398.08; m/z found, 399.1 [M+H] ⁺ . Step C. N-[5-[2-methyl-5-[[(1S,4S)-5-oxa-2-azabicyclo[2.2.1]heptan-4 -yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]283yridine-2-yl]cyclopropanecarboxami de. A mixture of (1S,4S)-1-(((4- bromo-6-methylpyridin-3-yl)oxy)methyl)-2-oxa-5-azabicyclo[2. 2.1]heptane-5-carboxylate (154 mg, 0.386 mmol), N-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazolo[1 ,5-a]pyridin-2- yl)cyclopropanecarboxamide (Intermediate 3; 157 mg, 0.482 mmol) and 0.5 M K3PO4 (0.771 mL, 0.386 mmol) in dioxane (1.5 mL) was placed in a vial. The capped vial was then evacuated and back-filled with N2. The vial was evacuated again, then backfilled with N2, and then 6- bromo-1H-pyrrolo[2,3-b]pyridine (157 mg, 0.482 mmol) and [1,1'- Bis(diphenylphosphino)ferrocene]dichloropalladium(II) Dichloromethane (31 mg, 0.038 mmol) were added. The mixture was heated at 90 °C for 1 hr. The mixture was worked up with EtOAc/water/brine and purified by silica gel (20-100% EtOAc/hexanes over 20 min) providing the Boc-protected compound. To the Boc-protected compound (155 mg, 0.298 mmol) in DCM (1.5 mL), CF ₃ COOH (0.3 mL) was added. The reaction mixture was stirred at RT for 16 h, The reaction was cooled to RT, and worked-up with saturated NaHCO3 and 10% MeOH/DCM. The combined organic layers were dried (Na2SO4), concentrated and purified by silica gel (4g Gold ISCO column, 0-10% MeOH (with 2M NH ₃ ) / DCM, 20 min gradient) providing the title compound (94 mg, 75%). MS (ESI): mass calcd. for C23H25N5O3, 419.5; m/z found, 420.2 283

[M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.44 - 8.39 (m, 1H), 8.28 (s, 1H), 7.85 - 7.80 (m, 1H), 7.39 (s, 1H), 7.08 (dd, J = 7.3, 2.0 Hz, 1H), 6.90 (s, 1H), 4.48 (s, 2H), 3.93 - 3.85 (m, 2H), 3.77 (s, 1H), 3.07 - 2.98 (m, 2H), 2.53 (s, 3H), 1.93 - 1.85 (m, 2H), 1.83 - 1.77 (m, 1H), 1.02 - 0.96 (m, 2H), 0.94 - 0.87 (m, 2H). Example 254: 5-[2-methyl-5-[[(1R,4R)-5-oxa-2-azabicyclo[2.2.1]heptan-4-yl ]methoxy]-4- pyridyl]-N-(6-methylpyridazin-3-yl)pyrazolo[1,5-a]pyridin-2- amine. as prepared in the similar manner of Example 251 except 3-chloro- 6-methylpyridazine was used instead of 2-bromo-5-methylpyrazine in step A; and tert-butyl (1R,4R)-1-(hydroxymethyl)-2-oxa-5-azabicyclo[2.2.1]heptane-5 -carboxylate was used instead of tert-butyl (1S,4S)-1-(hydroxymethyl)-2-oxa-5-azabicyclo[2.2.1]heptane-5 -carboxylate in Step B (39.5 mg, 58%). MS (ESI): mass calcd. for C24H25N7O2, 443.5; m/z found, 444.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.44 - 8.40 (m, 1H), 8.28 (s, 1H), 7.83 - 7.77 (m, 1H), 7.68 (d, J = 9.2 Hz, 1H), 7.43 (d, J = 9.2 Hz, 1H), 7.40 (s, 1H), 7.04 (dd, J = 7.2, 1.9 Hz, 1H), 6.86 (s, 1H), 4.48 (s, 2H), 3.94 - 3.83 (m, 2H), 3.69 (s, 1H), 3.03 - 2.95 (m, 2H), 2.55 (d, J = 14.2 Hz, 6H), 1.91 - 1.74 (m, 2H). Example 255: N-(6-cyclopropylpyridazin-3-yl)-5-[2-methyl-5-[[(1R,4R)-5-ox a-2- azabicyclo[2.2.1]heptan-4-yl]methoxy]-4-pyridyl]pyrazolo[1,5 -a]pyridin-2-amine. 284

prepared in the similar manner of Example 251 except 3-chloro- 6-cyclopropylpyridazine was used instead of 2-bromo-5-methylpyrazine in step A; and tert-butyl (1R,4R)-1-(hydroxymethyl)-2-oxa-5-azabicyclo[2.2.1]heptane-5 -carboxylate was used instead of tert-butyl (1S,4S)-1-(hydroxymethyl)-2-oxa-5-azabicyclo[2.2.1]heptane-5 -carboxylate in step B (45.5 mg, 48%). MS (ESI): mass calcd. for C ₂₆ H ₂₇ N ₇ O ₂ , 469.5; m/z found, 470.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.45 - 8.38 (m, 1H), 8.28 (s, 1H), 7.85 - 7.77 (m, 1H), 7.64 (d, J = 9.3 Hz, 1H), 7.40 (s, 1H), 7.29 (d, J = 9.3 Hz, 1H), 7.03 (dd, J = 7.2, 2.0 Hz, 1H), 6.85 (s, 1H), 4.48 (s, 2H), 3.95 - 3.84 (m, 2H), 3.69 (s, 1H), 3.05 - 2.95 (m, 2H), 2.54 (s, 3H), 2.23 - 2.13 (m, 1H), 1.91 - 1.84 (m, 1H), 1.81 - 1.76 (m, 1H), 1.11 - 1.05 (m, 2H), 1.01 - 0.94 (m, 2H). Example 256: 5-[2-methyl-5-[[(1R,4R)-2-methyl-5-oxa-2-azabicyclo[2.2.1]he ptan-4- yl]methoxy]-4-pyridyl]-N-(6-methylpyridazin-3-yl)pyrazolo[1, 5-a]pyridin-2-amine. (10 mg, 32%) was prepared in the similar manner of Example 249, except 5-[2-methyl-5-[[(1R,4R)-5-oxa-2-azabicyclo[2.2.1]heptan-4-yl ]methoxy]-4-pyridyl]-N- (6-methylpyridazin-3-yl)pyrazolo[1,5-a]pyridin-2-amine (Example 254) was used instead of N- [5-[2-methyl-5-[[(1R,4R)-5-oxa-2-azabicyclo[2.2.1]heptan-4-y l]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. MS (ESI): mass calcd. for C25H27N7O2, 457.5; m/z found, 458.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.45 - 8.41 285

(m, 1H), 8.26 (s, 1H), 7.82 - 7.78 (m, 1H), 7.68 (d, J = 9.1 Hz, 1H), 7.43 (d, J = 9.2 Hz, 1H), 7.40 (s, 1H), 7.03 (dd, J = 7.2, 2.0 Hz, 1H), 6.87 (s, 1H), 4.42 (d, J = 2.2 Hz, 2H), 4.12 (dd, J = 8.1, 1.1 Hz, 1H), 3.78 (dd, J = 8.2, 1.9 Hz, 1H), 3.49 (s, 1H), 2.92 (d, J = 10.2 Hz, 1H), 2.72 - 2.67 (m, 1H), 2.56 (s, 3H), 2.53 (s, 3H), 2.42 (s, 3H), 2.00 - 1.95 (m, 1H), 1.85 - 1.80 (m, 1H). Example 257: 5-[2-methyl-5-[[(1R,4R)-5-oxa-2-azabicyclo[2.2.1]heptan-4-yl ]methoxy]-4- pyridyl]-N-(5-methylpyrazin-2-yl)pyrazolo[1,5-a]pyridin-2-am ine. (8.4 mg, 10%) was prepared in the similar manner of Example 251 except tert-butyl (1R,4R)-1-(hydroxymethyl)-2-oxa-5-azabicyclo[2.2.1]heptane-5 -carboxylate was used instead of tert-butyl (1S,4S)-1-(hydroxymethyl)-2-oxa-5-azabicyclo[2.2.1]heptane-5 - carboxylate in step B. MS (ESI): mass calcd. for C24H25N7O2, 443.5; m/z found, 444.2 [M+H] ⁺ . 1H NMR (600 MHz, Methanol-d4) δ 8.55 (d, J = 1.5 Hz, 1H), 8.46 – 8.39 (m, 1H), 8.28 (s, 1H), 8.15 – 8.10 (m, 1H), 7.79 – 7.75 (m, 1H), 7.39 (s, 1H), 7.02 (dd, J = 7.2, 1.9 Hz, 1H), 6.79 (d, J = 0.9 Hz, 1H), 4.48 (s, 2H), 3.91 (dd, J = 7.6, 1.8 Hz, 1H), 3.86 (d, J = 7.6, 0.9 Hz, 1H), 3.70 – 3.66 (m, 1H), 3.03 – 2.96 (m, 2H), 2.53 (s, 3H), 2.44 (s, 3H), 1.89 – 1.84 (m, 1H), 1.80 – 1.76 (m, 1H). Example 258: (*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(8-oxaspir o[4.4]nonan-7- ylmethoxy)-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. 286

p . g, 42%) was prepared as the first eluting peak after purification by SFC-11 over DAICEL CHIRALPAK AD 250 mm x 30 mm x 10 µm (eluent: 45% to 45% (v/v) EtOH with 0.1% NH3•H2O in supercritical CO2) as described in Example 219. MS (ESI): mass calcd. for C28H32N6O2, 484.6; m/z found, 485.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.36 (d, J = 7.2 Hz, 1H), 8.29 (s, 1H), 7.68 (d, J = 0.8 Hz, 1H), 7.42 (s, 1H), 7.18 (s, 1H), 7.07 (s, 1H), 7.00 (dd, J = 2.0, 7.2 Hz, 1H), 6.57 (s, 1H), 4.36 - 4.29 (m, 1H), 4.12 (d, J = 4.4 Hz, 2H), 3.62 - 3.57 (m, 2H), 2.60 (s, 3H), 2.56 (s, 3H), 2.45 (s, 3H), 1.93 - 1.84 (m, 1H), 1.76 - 1.72 (m, 1H), 1.66 - 1.49 (m, 8H) 1H NMR (400 MHz, DMSO-d6) δ 10.21 (s, 1H), 8.59 (d, J = 7.2 Hz, 1H), 8.34 (s, 1H), 7.85 (s, 1H), 7.36 (s, 1H), 7.03 (dd, J = 1.6, 7.2 Hz, 1H), 6.98 (br. s., 1H), 6.89 (br. s., 1H), 4.27 - 4.20 (m, 1H), 4.19 - 4.09 (m, 2H), 3.49 - 3.45 (m, 2H), 2.47 (s, 3H), 2.46 (s, 3H), 2.30 (s, 3H), 1.90 - 1.82 (m, 1H), 1.75 - 1.66 (m, 1H), 1.59 - 1.42 (m, 8H). Example 259: 2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- methyl-3-pyridyl]oxymethyl]-1,1,1,3,3,3-hexafluoro-propan-2- ol. tep : -((( - romo- -met ylpyridin-3-yl)oxy)methyl)-1,1,1,3,3,3-hexafluoropropan-2- ol. A 30 mL microwave vial was charged with 4-bromo-6-methylpyridin-3-ol (1.00 g, 5.32 287

mmol) and DMF (10.6 mL). At RT, cesium carbonate was added (3.47 g, 10.6 mmol) followed by 2,2-bis(trifluoromethyl)oxirane (1.92 g, 10.6 mmol). The reaction mixture was heated at 100 °C overnight. The reaction mixture was then cooled and dissolved in EtOAc, and thenwashed with water and brine. The organic layers were dried with Na ₂ SO ₄ , and then filtered and concentrated to dryness under reduced pressure. The crude product was purified via flash column chromatography with silica gel (20-100% EtOAc / hexanes) to afford the desired product (1.50 g, 77%). MS (ESI): mass calcd. for C ₁₀ H ₈ BrF ₆ NO ₂ , 367.0; m/z found, 368.0 [M+H] ⁺ .1H NMR (500 MHz, Chloroform-d) δ 8.06 (s, 1H), 7.42 (s, 1H), 4.45 (s, 2H), 2.97 - 2.88 (m, 1H), 2.50 (s, 3H). Step B: 2-(((4-(2-Aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin- 3-yl)oxy)methyl)- 1,1,1,3,3,3-hexafluoropropan-2-ol. A30 mL microwave vial containing a stir bar was charged with 2-(((4-bromo-6-methylpyridin-3-yl)oxy)methyl)-1,1,1,3,3,3-he xafluoropropan-2-ol (1.50 g, 4.08 mmol), Intermediate 14 (1.37 g, 5.30 mmol), 11'-bis(diphenylphosphino)ferrocene- palladium(ii)dichloride dichloromethane complex (337 mg, 0.41 mmol), aqueous K ₃ PO ₄ (0.5M, 8 mL) and 1,4-dioxane (16 mL). The reaction mixture was degassed under N ₂ for 10 min. The vial was placed into a pre-heated plate at 90 ºC for 1 h. The reaction mixture was then cooled and dissolved in EtOAc, washed with water and brine, and the the organic layers were dried with Na ₂ SO ₄ andthenfiltered and concentrated to dryness under reduced pressure. The crude product was purified via flash column chromatography purified over silica gel (20-100% EtOAc with 10% MeOH / hexanes) to afford desired product (1.3 g, 76%). MS (ESI): mass calcd. for C ₁₄ H ₁₇ F ₆ N ₄ O ₂ , 420.1; m/z found, 421.1 [M+H] ⁺ .1H NMR (500 MHz, Chloroform-d) δ 8.21 - 8.06 (m, 2H), 7.39 (dd, J = 1.9, 0.9 Hz, 1H), 7.15 (s, 1H), 6.68 (dd, J = 7.2, 2.0 Hz, 1H), 5.77 (d, J = 0.8 Hz, 1H), 4.42 (s, 2H), 4.01 (s, 2H), 3.50 (s, 1H), 2.50 (s, 3H). Step C: 2-(((4-(2-((2,6-Dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a] pyridin-5-yl)-6- methylpyridin-3-yl)oxy)methyl)-1,1,1,3,3,3-hexafluoropropan- 2-ol. A 30 mL microwave vial containing a stir bar was charged with 2-(((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)methyl)-1,1,1,3,3,3-hexafluoropropan- 2-ol (250 mg, 0.60 mmol), 4- chloro-2,6-dimethylpyrimidine (93.3 mg, 0.65 mmol), tBuBrettPhos Pd G3 (25.4 mg, 0.03 mmol), cesium carbonate (0.58 g, 1.78 mmol), and 1,4-dioxane (11 mL). The reaction mixture was degassed under vacuum with sonication for 2 minutes, then vented to argon. The vial was 288

placed into a pre-heated plate at 80 ºC for 16 h. The reaction mixture was then filtered, concentrated to dryness under reduced pressure to afford the crude product which was purified by flash column chromatography (eluent: 0-10% 2M NH ₃ in CH ₃ OH/DCM)) to afford the title compound (172 mg, 55%) as a white solid. MS (ESI): mass calcd. for C ₂₃ H ₂₀ F ₆ N ₆ O ₂ , 526.4; m/z found, 527.15 [M+H] ⁺ .1H NMR (400 MHz, Chloroform-d) δ 8.31 (d, J = 17.2 Hz, 2H), 7.72 (s, 1H), 7.51 (d, J = 1.8 Hz, 1H), 7.17 (s, 1H), 6.87 (s, 1H), 6.81 (dd, J = 7.2, 1.9 Hz, 1H), 6.46 (s, 1H), 4.54 (s, 2H), 3.51 (s, 0H), 2.57 (s, 3H), 2.48 (s, 3H), 2.33 (s, 3H). Example 260: 1-[[4-[2-(imidazo[1,2-b]pyridazin-6-ylamino)pyrazolo[1,5-a]p yridin-5-yl]-6- methyl-3-pyridyl]oxy]-2-methyl-propan-2-ol. al containing a stir bar was charged with 1-((4-(2- aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)- 2-methylpropan-2-ol (250 mg, 0.80 mmol), 6-chloroimidazo[1,2-b]pyridazine (138 mg, 0.88 mmol), tBuBrettPhos Pd G3 (34 mg, 0.04 mmol), cesium carbonate (0.78 g, 2.40 mmol), and 1,4-dioxane (16 mL). The reaction mixture was degassed under vacuum with sonication for 2 minutes, then vented to argon. The vial was placed into a pre-heated plate at 80 ºC for 16 h. The reaction mixture was then filtered, concentrated to dryness under reduced pressure to afford the crude product which was purified by flash column chromatography (eluent: 0-10% 2M NH3 in CH3OH/DCM)) to afford the title compound (89 mg, 26%) as a white solid. MS (ESI): mass calcd. for C23H23N7O2, 429.5; m/z found, 430.20 [M+H] ⁺ .1H NMR (500 MHz, Chloroform-d) δ 8.30 - 8.22 (m, 2H), 8.20 (d, J = 3.7 Hz, 1H), 7.81 - 7.71 (m, 2H), 7.63 - 7.57 (m, 2H), 7.15 (s, 1H), 6.98 - 6.89 (m, 2H), 6.79 (d, J = 9.6 Hz, 1H), 3.97 (s, 2H), 3.51 (s, 1H), 2.56 (s, 3H), 1.35 (s, 6H). Example 261: 1-[[4-[2-[(2-tert-butyl-6-methyl-pyrimidin-4-yl)amino]pyrazo lo[1,5-a]pyridin-5- yl]-6-methyl-3-pyridyl]oxy]-2-methyl-propan-2-ol. 289

containing a stir bar was charged with 1-((4-(2- aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)- 2-methylpropan-2-ol (250 mg, 0.80 mmol), 2-(tert-butyl)-4-chloro-6-methylpyrimidine (163 mg, 0.88 mmol), tBuBrettPhos Pd G3 (34 mg, 0.04 mmol), cesium carbonate (0.78 g, 2.40 mmol), and 1,4-dioxane (16 mL). The reaction mixture was degassed under vacuum with sonication for 2 minutes, then vented to argon. The vial was placed into a pre-heated plate at 80 ºC for 16 h. The reaction mixture was then filtered, concentrated to dryness under reduced pressure to afford the crude product which was purified by flash column chromatography (eluent: 0-10% 2M NH3 in CH3OH/DCM)) to afford the title compound (182 mg, 49%) as a white solid. MS (ESI): mass calcd. for C26H32N6O2, 460.6; m/z found, 461.20 [M+H] ⁺ .1H NMR (500 MHz, Chloroform-d) δ 8.27 (s, 1H), 8.19 (dt, J = 7.1, 0.9 Hz, 1H), 7.68 (s, 1H), 7.56 (dd, J = 2.0, 0.9 Hz, 1H), 7.08 (s, 1H), 6.88 (s, 1H), 6.80 (dd, J = 7.2, 1.9 Hz, 1H), 6.41 (s, 1H), 3.99 (s, 2H), 3.35 (s, 1H), 2.53 (s, 3H), 2.36 (s, 3H), 1.45 (s, 9H), 1.38 (s, 6H). Example 262: 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- methyl-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. s prepared (212 mg, 69%) by the similar method of Example 1 using 3-hydroxy-2,2-dimethylpropanenitrile instead of (R)-(1-methylpyrrolidin-3-yl)methanol and Intermediate 15 instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2- 290

yl)cyclopropanecarboxamide. MS (ESI): mass calcd. for C24H25N7O, 427.5; m/z found, 428.2 [M+H] ⁺ .1H NMR (500 MHz, Chl oroform-d) δ8.59 - 8.50 (m, 2H), 8.22 (s, 1H), 7.69 (dd, J = 2.0, 0.9 Hz, 1H), 7.22 (s, 1H), 7.07 (s, 1H), 7.01 (dd, J = 7.2, 2.0 Hz, 1H), 6.62 (s, 1H), 3.99 (s, 2H), 2.59 (d, J = 16.5 Hz, 6H), 2.43 (s, 3H), 1.40 (s, 6H). Example 263: (*S)-3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxy]-1,1,1-trifluoro-2-methyl-propan-2-ol . methylpyridin-3-yl)oxy)-1,1,1-trifluoro-2-methylpropan-2-ol. A 30 mL microwave vial was charged with 4-bromo-6-methylpyridin-3-ol (1.00 g, 5.32 mmol) and DMF (10.6 mL). At RT, cesium carbonate was added (3.47 g, 10.6 mmol) followed by 2-methyl- 2-(trifluoromethyl)oxirane (1.34 g, 10.6 mmol). The reaction mixture was heated at 100 °C overnight. The reaction mixture was then cooled and dissolved in EtOAc, and then washed with water and brine. The organic layers were dried with Na2SO4 then filtered and concentrated to dryness under reduced pressure. The crude product was purified via flash column chromatography purified over silica gel (20-100% EtOAc / hexanes) to afford desired product (700 mg, 42%). MS (ESI): mass calcd. for C10H11BrF3NO2, 313.0; m/z found, 314.0 [M+H] ⁺ .1H NMR (500 MHz, Chloroform-d) δ 8.04 (s, 1H), 7.37 (bs, 1H), 4.76 (s, 1H), 4.24 (d, J = 9.6 Hz, 1H), 4.09 (dd, J = 9.6, 1.0 Hz, 1H), 2.48 (s, 3H), 1.56 (d, J = 1.0 Hz, 3H). Step B: 3-((4-(2-Aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3 -yl)oxy)-1,1,1- trifluoro-2-methylpropan-2-ol. A 30 mL microwave vial containing a stir bar was charged with 3-((4-bromo-6-methylpyridin-3-yl)oxy)-1,1,1-trifluoro-2-meth ylpropan-2-ol (700 mg, 2.23 mmol), Intermediate 14, 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazolo[1,5- a]pyridin- 2-amine (751 mg, 2.90 mmol), 11'-bis(diphenylphosphino)ferrocene-palladium(ii)dichloride dichloromethane complex (184 mg, 0.22 mmol), aqueous K3PO4 (0.5M, 4 mL) and 1,4-dioxane (9 mL). The reaction mixture was degassed under N ₂ for 10 min. The vial was placed into a pre- 291

heated plate at 90 ºC for 1 h. The reaction mixture was cooled and dissolved in EtOAc,washed with water and brine, and the organic layers weredriedwith Na2SO4, filtered, and then concentrated to dryness under reduced pressure. The crude product was purified via flash column chromatography purified over silica gel (20-100% EtOAc with 10% MeOH / hexanes) to afford the desired product (500 mg, 61%). MS (ESI): mass calcd. for C17H17F3N4O2, 366.1.0; m/z found, 367.1 [M+H] ⁺ .1H NMR (500 MHz, Chloroform-d) δ 8.08 - 7.99 (m, 2H), 7.33 (dd, J = 2.0, 0.9 Hz, 1H), 7.04 (s, 1H), 6.63 (dd, J = 7.2, 2.0 Hz, 1H), 5.67 (d, J = 0.8 Hz, 1H), 5.60 (s, 1H), 4.09 (d, J = 9.6 Hz, 1H), 4.04 - 3.96 (m, 1H), 3.37 (s, 2H), 2.41 (s, 3H), 1.35 (s, 3H) Step C: 3-((4-(2-((2,6-Dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]p yridin-5-yl)-6- methylpyridin-3-yl)oxy)-1,1,1-trifluoro-2-methylpropan-2-ol. A 30 mL microwave vial containing a stir bar was charged with 3-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)-1,1,1-trifluoro-2-methylpropan-2-ol (500 mg, 1.37 mmol), 4-chloro- 2,6-dimethylpyrimidine (214 mg, 1.50 mmol), tBuBrettPhos Pd G3 (58.3 mg, 0.07 mmol), cesium carbonate (1.33 g, 4.10 mmol), and 1,4-dioxane (10 mL). The reaction mixture was degassed under vacuum with sonication for 2 minutes, then vented with argon. The vial was placed into a pre-heated plate at 80 ºC for 16 h. The reaction mixture was then filtered, and then concentrated to dryness under reduced pressure to afford the crude product which was purified by flash column chromatography (eluent: 0-10% 2M NH3 in CH3OH/DCM)) to afford the title compound (450 mg, 70%) as a white solid. MS (ESI): mass calcd. for C23H23F3N6O2, 472.2; m/z found, 473.2 [M+H] ⁺ .1H NMR (400 MHz, Chloroform-d) δ 8.52 (s, 1H), 8.40 (d, J = 7.2 Hz, 1H), 8.23 (s, 1H), 7.57 (d, J = 2.0 Hz, 1H), 7.14 (s, 1H), 6.88 – 6.78 (m, 2H), 6.52 (s, 1H), 5.88 (s, 1H), 4.28 (d, J = 9.6 Hz, 1H), 4.14 (d, J = 9.6 Hz, 1H), 2.52 (d, J = 3.6 Hz, 6H), 2.30 (s, 3H), 1.51 (s, 3H). Step D: (*S)-3-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1, 5-a]pyridin-5-yl)- 6-methylpyridin-3-yl)oxy)-1,1,1-trifluoro-2-methylpropan-2-o l. The mixture of 3-((4-(2-((2,6- dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)-1,1,1- trifluoro-2-methylpropan-2-ol was separated via chiral SFC (SFC-B, 2x25cm, mobile phase: 30% MeOH, 70%CO2), and then chiral SFC (OJ-H 2x25cm, mobile phase: 30% 0.1%NH3 in MeOH, 70%CO2) to afford two peaks. The first elute isomer was designated as (*S) isomer (174 mg, 27%). 292

MS (ESI): mass calcd. for C23H23F3N6O2, 472.5; m/z found, 473.2 [M+H] ⁺ .1H NMR (400 MHz, Chloroform-d) δ 8.37 (d, J = 7.2 Hz, 1H), 8.27 (s, 1H), 7.59 (s, 1H), 7.19 (s, 1H), 7.00 (s, 1H), 6.88 (dd, J = 7.1, 1.9 Hz, 1H), 6.55 (s, 1H), 4.32 (d, J = 9.7 Hz, 1H), 4.10 (d, J = 9.7 Hz, 1H), 3.51 (s, 1H), 2.57 (s, 6H), 2.42 (s, 3H), 1.91 (bs, 1H), 1.48 (s, 3H). Example 264: (*R)-3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxy]-1,1,1-trifluoro-2-methyl-propan-2-ol . er from Example 263 was designated as (*R) isomer (175 mg, 27%). MS (ESI): mass calcd. for C ₂₃ H ₂₃ F ₃ N ₆ O ₂ , 472.5; m/z found, 473.2 [M+H] ⁺ .1H NMR (400 MHz, Chloroform-d) δ 8.27 (d, J = 7.2 Hz, 1H), 8.18 (s, 1H), 7.51 (d, J = 1.9 Hz, 1H), 7.11 (s, 1H), 6.98 (s, 1H), 6.81 (dd, J = 7.2, 2.0 Hz, 1H), 6.48 (s, 1H), 4.22 (d, J = 9.7 Hz, 1H), 4.03 – 3.95 (m, 1H), 3.42 (s, 1H), 2.50 (d, J = 3.6 Hz, 6H), 2.36 (s, 3H), 1.66 (bs, 1H), 1.37 (d, J = 1.2 Hz, 3H). Example 265: 2-(cyclopropylmethyl)-6-[[5-[5-(2-hydroxy-2-methyl-propoxy)- 2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-4-methyl-pyridazi n-3-one. ropylmethyl)-4-methylpyridazin-3(2H)-one. A 30 mL microwave vial was charged with 6-chloro-4-methylpyridazin-3(2H)-one (1.00 g, 6.92 mmol) and DMF (14 mL). At rt, cesium carbonate was added (5.64 g, 17.3 mmol) followed by 293

(bromomethyl)cyclopropane (1.87 g, 13.8 mmol). The reaction mixture was stirred at rt overnight. The reaction mixure was then dissolved in EtOAc, washed with water and brine, and the organic layers weredried Na ₂ SO ₄ ., and thenfiltered, concentrated to dryness under reduced pressure. The crude product was purified via flash column chromatography purified over silica gel (20-100% EtOAc / hexanes) to afford desired product (1.09 g, 79%). MS (ESI): mass calcd. for C ₉ H ₁₁ ClN ₂ O, 198.1; m/z found, 199.1 [M+H] ⁺ . Step B: A 30 mL microwave vial containing a stir bar was charged 1-((4-(2- aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)- 2-methylpropan-2-ol (102 mg, 0.33 mmol), 2-(tert-butyl)-4-chloro-6-methylpyrimidine (71.4 mg, 0.36 mmol), tBuBrettPhos Pd G3 (14 mg, 0.02 mmol), cesium carbonate (319 mg, 0.98 mmol), and 1,4-dioxane (0.7 mL). The reaction mixture was degassed under vacuum with sonication for 2 minutes, then vented with argon. The vial was placed into a pre-heated plate at 80 ºC for 16 h. The reaction mixture was then filtered, concentrated to dryness under reduced pressure to afford the crude product which was purified over basic ISCO (Gemini 5 uM NX-C18110 angstrom LC column 150 x 21.2 mm; 10-100% ACN / 20 mM aqueous NH3 over 15 min; 40 mL/min) to afford the title compound (13.2 mg, 9%) as a white solid. MS (ESI): mass calcd. for C ₂₆ H ₃₀ N ₆ O ₃ , 474.6; m/z found, 475.3 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d ₄ ) δ 8.39 (dt, J = 7.2, 0.9 Hz, 1H), 8.23 (s, 1H), 7.81 (dd, J = 2.0, 0.9 Hz, 1H), 7.39 (s, 1H), 7.26 (q, J = 1.2 Hz, 1H), 7.07 (dd, J = 7.2, 2.0 Hz, 1H), 6.90 (d, J = 0.9 Hz, 1H), 4.84 (s, 2H), 4.01 (d, J = 7.1 Hz, 2H), 3.93 (s, 2H), 2.53 (s, 3H), 2.21 (d, J = 1.3 Hz, 3H), 1.47 – 1.36 (m, 1H), 1.26 (s, 6H), 0.61 – 0.51 (m, 2H), 0.54 – 0.45 (m, 2H). Example 266: N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(4-methylsulfon ylcyclohexoxy)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine. 4

A 30 mL microwave vial was charged with 4-(methylsulfonyl)cyclohexan-1-ol (192 mg, 1.08 mmol) and 1-methylpyrrolidin-2-one (10 mL). Sodium hydride (60% dispersion in mineral oil, 86.1 mg, 2.15 mmol) was added. The reaction mixture was stirred at rt for 10 min. N-(2,6- Dimethylpyrimidin-4-yl)-5-(5-fluoro-2-methylpyridin-4-yl)pyr azolo[1,5-a]pyridin-2-amine (Intermediate 15, 250 mg, 0.72 mmol) was then added to the mixture. The resulting mixture was stirred at 80 °C for 16 hr. Cooled and quenched the reaction with CH ₃ OH. The crude was purified via prep. HPLC using 20-70% ACN-H ₂ O with 20mM of NH ₄ OH as modifier. The pure fraction was lyophilized down to afford a white solid (258 mg, 71%). MS (ESI): mass calcd. for C ₂₆ H ₃₀ N ₆ O ₃ S, 506.6; m/z found, [M+H] ⁺ .1H NMR (500 MHz, Chloroform-d) δ 8.57 (s, 1H), 8.47 (dd, J = 13.6, 7.1 Hz, 1H), 8.25 (d, J = 10.7 Hz, 1H), 7.64 - 7.59 (m, 1H), 7.18 (d, J = 6.1 Hz, 1H), 7.01 (s, 1H), 6.96 - 6.89 (m, 1H), 6.64 (s, 1H), 3.46 (s, 3H), 2.81 (d, J = 2.6 Hz, 3H), 2.61 - 2.51 (m, 7H), 2.42 (d, J = 2.8 Hz, 3H), 2.31 - 2.17 (m, 2H), 1.98 (dd, J = 13.2, 3.7 Hz, 1H), 1.84 - 1.74 (m, 1H), 1.69 - 1.51 (m, 2H). The mixture of N-(2,6-dimethylpyrimidin-4-yl)-5- (2-methyl-5-((4-(methylsulfonyl)cyclohexyl)oxy)pyridin-4-yl) pyrazolo[1,5-a]pyridin-2-amine was separated via chiral chromatography (AS-H 2x25cm, mobile phase: 40% 0.1%DEA in MeOH, 60%CO2) to afford two peaks. The second elute isomer was designated as trans-isomer (106 mg, 29%). MS (ESI): mass calcd. for C ₂₃ H ₂₃ F ₃ N ₆ O ₂ , 472.5; m/z found, 473.2 [M+H] ⁺ .1H NMR (500 MHz, Chloroform-d) δ 8.44 (d, J = 7.2 Hz, 1H), 8.28 (s, 1H), 7.68 – 7.63 (m, 2H), 7.22 (s, 1H), 7.12 (s, 1H), 6.97 (dd, J = 7.2, 1.9 Hz, 1H), 6.66 (s, 1H), 4.71 (q, J = 2.8 Hz, 1H), 2.92 – 2.84 (m, 1H), 2.62 (s, 3H), 2.58 (s, 6H), 2.48 (s, 3H), 2.31 – 2.22 (m, 2H), 2.02 (dd, J = 12.7, 3.7 Hz, 2H), 1.89 – 1.77 (m, 2H), 1.70 – 1.55 (m, 2H). Example 267: (rac-)-5-[5-(2-amino-3,3,3-trifluoro-2-methyl-propoxy)-2-met hyl-4-pyridyl]-N- (2,6-dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. 95

A 30 mL microwave vial was charged with 2-amino-3,3,3-trifluoro-2-methylpropan-1-ol HCl salt (193 mg, 1.08 mmol) and 1-methylpyrrolidin-2-one (10 mL). Sodium hydride (60% dispersion in mineral oil, 86.1 mg, 2.15 mmol) was added. The reaction mixture was stirred at rt for 10 min. N-(2,6-Dimethylpyrimidin-4-yl)-5-(5-fluoro-2-methylpyridin-4 -yl)pyrazolo[1,5- a]pyridin-2-amine (Intermediate 15, 250 mg, 0.72 mmol) was then added to the mixture. The resulting mixture was stirred at 80 °C for 16 hr. Cooled and quenched the reaction with CH3OH. The crude was purified via prep. HPLC using 20-70% ACN-H ₂ O with 20mM of NH ₄ OH as modifier. The pure fraction was lyophilized down to afford a white solid (254 mg, 75%). MS (ESI): mass calcd. for C23H24F3N7O, 471.5; m/z found, 472.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Chloroform-d) δ 8.92 – 8.86 (m, 1H), 8.54 – 8.48 (m, 1H), 8.24 (s, 1H), 7.59 (d, J = 1.9 Hz, 1H), 7.17 (s, 1H), 7.01 (s, 1H), 6.90 (dd, J = 7.2, 1.9 Hz, 1H), 6.59 (s, 1H), 4.18 (d, J = 9.4 Hz, 1H), 3.98 – 3.91 (m, 1H), 2.84 (s, 1H), 2.59 (s, 3H), 2.55 (s, 3H), 2.41 (s, 3H), 1.61 (s, 2H), 1.27 (s, 3H). Example 268: 4-[[5-[5-(2-cyano-2-methyl-propoxy)-2-methyl-4-pyridyl]pyraz olo[1,5-a]pyridin- 2-yl]amino]-N-cyclopropyl-2,6-dimethoxy-benzamide. pared using methods analogous to those described in Example 136 and using Intermediate 21 instead of Intermediate 6 and using 3-hydroxy-2,2- dimethylpropanenitrile instead of endo-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C30H32N6O4, 540.2; m/z found, 541.20 [M+H] ⁺ . ¹ H NMR (600 MHz, Chloroform-d) δ 8.30 (d, J = 7.0 Hz, 1H), 8.17 (s, 1H), 7.58 (d, J = 1.9 Hz, 1H), 7.55 - 7.50 (m, 1H), 7.18 (s, 1H), 6.88 (dd, J = 7.2, 2.0 Hz, 1H), 6.71 (s, 0H), 6.64 (s, 2H), 6.15 (d, J = 15.2 Hz, 2H), 3.96 (s, 2H), 3.77 (s, 1H), 3.72 (s, 5H), 2.95 - 2.88 (m, 1H), 2.54 (s, 3H), 1.38 (s, 6H), 0.78 (td, J = 7.1, 5.2 Hz, 2H), 0.61 - 0.54 (m, 2H). 296

Example 269: 3-[[4-[2-[(1,5-dimethyl-6-oxo-pyridazin-3-yl)amino]pyrazolo[ 1,5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. al was charged with 3-hydroxy-2,2-dimethylpropanenitrile (122 mg, 1.24 mmol) and 1-methylpyrrolidin-2-one (8 mL). Sodium hydride (60% dispersion in mineral oil, 99 mg, 2.47 mmol) was added. The reaction mixture was stirred at room temperature for 10 min. Intermediate 17 was then added to the mixture. The resulting mixture was stirred at 80 °C for 16 hr. Cooled and quenched the reaction with CH3OH. The crude was purified via prep. HPLC using 20-70% ACN-H2O with 20mM of NH4OH as modifier. The pure fraction was lyophilized down to afford a white solid (314 mg, 86%). MS (ESI): mass calcd. for C24H25N7O2, 443.5; m/z found, 444.2 [M+H] ⁺ . ¹ H NMR (400 MHz, Chloroform-d) δ 8.34 (dd, J = 7.2, 0.9 Hz, 1H), 8.23 (s, 1H), 7.82 (dd, J = 9.9, 3.8 Hz, 1H), 7.69 (dd, J = 2.0, 0.9 Hz, 1H), 7.22 (s, 1H), 7.14 (d, J = 1.4 Hz, 1H), 7.01 (dd, J = 7.2, 1.9 Hz, 1H), 6.76 (d, J = 0.8 Hz, 1H), 4.00 (s, 2H), 3.78 (s, 3H), 2.58 (s, 3H), 2.24 (d, J = 1.2 Hz, 3H), 1.41 (s, 6H). Example 270: (*R)-5-[5-(2-Amino-3,3,3-trifluoro-2-methyl-propoxy)-2-methy l-4-pyridyl]-N- (2,6-dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. ino-3,3,3-trifluoro-2-methylpropoxy)-2-methylpyridin-4-yl)- N-(2,6-dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine (Example 267) was separated via chiral SFC (Lux Cellulose-4, 2x25cm, 40% 0.1%DEA in MeOH, 60% CO2), followed by SFC 297

(AS-H 2x25cm, mobile phase: 40% 0.1%DEA in MeOH, 60% CO2) to afford two peaks. The first elute isomer was designated as *R isomer (160 mg, 47%). MS (ESI): mass calcd. for C ₂₃ H ₂₃ F ₃ N ₆ O ₂ , 472.5; m/z found, 473.2 [M+H] ⁺ .1H NMR (500 MHz, Chloroform-d) δ 8.44 (d, J = 7.2 Hz, 1H), 8.28 (s, 1H), 7.68 – 7.63 (m, 2H), 7.22 (s, 1H), 7.12 (s, 1H), 6.97 (dd, J = 7.2, 1.9 Hz, 1H), 6.66 (s, 1H), 4.71 (q, J = 2.8 Hz, 1H), 2.92 – 2.84 (m, 1H), 2.62 (s, 3H), 2.58 (s, 6H), 2.48 (s, 3H), 2.31 – 2.22 (m, 2H), 2.02 (dd, J = 12.7, 3.7 Hz, 2H), 1.89 – 1.77 (m, 2H), 1.70 – 1.55 (m, 2H). Example 271: N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(2-methoxyphenyl)methox y]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine. p 4 mg, 15%) was prepared as described in Example 198Example 198, except 2-methoxybenzyl alcohol (1.50 equiv.) was used instead of trans-1,4- cyclohexanediol. MS (ESI): mass calcd. for C ₂₇ H ₂₆ N ₆ O ₂ , 466.2; m/z found, 467.3 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.17 (s, 1H), 8.56 (dd, J = 7.3, 1.0 Hz, 1H), 8.40 (s, 1H), 7.82 (dd, J = 2.1, 1.0 Hz, 1H), 7.39 – 7.29 (m, 3H), 7.07 – 7.00 (m, 2H), 6.99 (s, 1H), 6.93 (td, J = 7.4, 1.0 Hz, 1H), 6.84 (s, 1H), 5.21 (s, 2H), 3.83 (s, 3H), 2.46 (d, J = 1.4 Hz, 6H), 2.30 (s, 3H). Example 272: 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- methyl-3-pyridyl]oxymethyl]phenol. 298

f 3-tert-butoxybenzyl alcohol (194 mg, 1.08 mmol, 1.50 equiv.) in DMA (2.20 mL) was added NaH (86 mg, 60% dispersion in mineral oil). The mixture allowed to stir at 23 °C for 5 min. To this was added Intermediate 15 (250 mg, 0.72 mmol), and the reaction was stirred at 80 °C for 2 hr. The reaction was cooled to 23 °C worked-up in sat. aq. NH4Cl (5 mL) and extracted with EtOAc (3 x 5 mL). The organic extracts were dried with magnesium sulfate, filtered and concentrated in vacuo. The crude material was purified by silica gel chromatography (0-10% MeOH in DCM) to give 5-(5-((3-(tert-butoxy)benzyl)oxy)-2- methylpyridin-4-yl)-N-(2,6-dimethylpyrimidin-4-yl)pyrazolo[1 ,5-a]pyridin-2-amine (206 mg, 56%). Step B: 5-(5-((3-(tert-butoxy)benzyl)oxy)-2-methylpyridin-4-yl)-N-(2 ,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine was dissolved in dichloromethane (1.7 mL, 0.2 M) and trifluoroacetic acid (0.26 mL, 10.0 equiv.) and heated at 40 °C for 5 hours. The mixture was then concentrated in vacuo purified via prep HPLC (Basic ISCO, 10-80% AcN / 20 mM aq NH3) and lyophilized to yield the title compound as a white solid (43 mg, 16%). MS (ESI): mass calcd. for C ₂₆ H ₂₄ N ₆ O ₂ , 452.2; m/z found, 453.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.18 (s, 1H), 9.43 (s, 1H), 8.58 (dd, J = 7.0, 1.0 Hz, 1H), 8.36 (s, 1H), 7.83 (dd, J = 1.9, 0.9 Hz, 1H), 7.36 (s, 1H), 7.15 (t, J = 7.8 Hz, 1H), 7.04 (dd, J = 7.2, 2.0 Hz, 1H), 7.01 (s, 1H), 6.86 (s, 1H), 6.85 – 6.80 (m, 2H), 6.73 – 6.66 (m, 1H), 5.19 (s, 2H), 2.47 – 2.43 (m, 6H), 2.30 (s, 3H). Example 273: N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(3-ethyloxetan-3-yl)met hoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine. 299

mg, 49%) was prepared as described in Example 198, except 3- ethyl-3-oxetanemethanol (2.50 equiv.) was used instead of trans-1,4-cyclohexanediol. MS (ESI): mass calcd. for C ₂₅ H ₂₈ N ₆ O ₂ , 444.2; m/z found, 445.3 [M+H] ⁺ . ¹ H NMR (600 MHz, DMSO-d6) δ 10.19 (s, 1H), 8.57 (dt, J = 7.2, 0.9 Hz, 1H), 8.42 (s, 1H), 7.79 (dd, J = 2.0, 0.9 Hz, 1H), 7.37 (s, 1H), 7.06 – 7.00 (m, 1H), 6.98 (dd, J = 7.2, 2.0 Hz, 1H), 6.82 (s, 1H), 4.42 (d, J = 6.0 Hz, 2H), 4.27 (d, J = 6.0 Hz, 2H), 4.24 (s, 2H), 2.47 (s, 3H), 2.45 (s, 3H), 2.30 (s, 3H), 1.71 (q, J = 7.5 Hz, 2H), 0.83 (t, J = 7.5 Hz, 3H). Example 274: [3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a] pyridin-5-yl]-6- methyl-3-pyridyl]oxymethyl]oxetan-3-yl]methanol. mg, 25%) was prepared as described in Example 198, except oxetane-3,3-dilydimethanol (2.50 equiv.) was used instead of trans-1,4-cyclohexanediol. MS (ESI): mass calcd. for C24H26N6O3, 446.2; m/z found, 447.2 [M+H] ⁺ . ¹ H NMR (600 MHz, DMSO-d6) δ 10.19 (s, 1H), 8.56 (dt, J = 7.2, 0.9 Hz, 1H), 8.39 (s, 1H), 7.79 (dd, J = 2.0, 0.9 Hz, 1H), 7.37 (s, 1H), 7.04 (s, 1H), 6.99 (dd, J = 7.2, 2.0 Hz, 1H), 6.82 (s, 1H), 4.98 (t, J = 5.4 Hz, 1H), 4.40 (d, J = 6.0 Hz, 2H), 4.33 (d, J = 6.0 Hz, 2H), 4.30 (s, 2H), 3.64 (d, J = 5.4 Hz, 2H), 2.47 (s, 3H), 2.45 (s, 3H), 2.31 – 2.29 (m, 3H). 300

Example 275: 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- methyl-3-pyridyl]oxymethyl]oxetane-3-carbonitrile. 1 mg, 16%) was prepared as described in Example 198, except 1- (hydroxymethyl)cyclobutene-1-carbonitrile (2.50 equiv.) was used instead of trans-1,4- cyclohexanediol. MS (ESI): mass calcd. for C ₂₄ H ₂₃ N ₇ O ₂ , 441.2; m/z found, 442.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.20 (s, 1H), 8.56 (dd, J = 7.2, 0.9 Hz, 1H), 8.42 (s, 1H), 7.84 (dd, J = 2.0, 0.9 Hz, 1H), 7.41 (s, 1H), 7.05 – 6.98 (m, 2H), 6.84 (s, 1H), 4.83 (d, J = 6.6 Hz, 2H), 4.67 (s, 2H), 4.64 (d, J = 6.6 Hz, 2H), 2.49 (s, 3H), 2.45 (s, 3H), 2.30 (s, 3H). Example 276: N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[(3S)-pyrrolidi n-3-yl]oxy-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine. 9 mg, 85%) was prepared as described in Example 272, except tert-butyl (S)-3-hydroxypyrrolidine-1-carboxylate (2.50 equiv.) was used instead of 3-tert- butoxybenzyl alcohol in Step A and dichloromethane (0.60 mL) and trifluoroacetic acid (0.45 mL, 20.0 equiv.) at 23 °C for 30 minutes was used in Step B. MS (ESI): mass calcd. for 301

C23H25N7O, 415.2; m/z found, 416.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.19 (s, 1H), 8.56 (d, J = 7.2 Hz, 1H), 8.30 (s, 1H), 7.80 (dd, J = 1.9, 0.9 Hz, 1H), 7.34 (s, 1H), 7.09 – 6.93 (m, 2H), 6.85 (s, 1H), 5.00 – 4.91 (m, 1H), 3.03 (dd, J = 12.3, 5.1 Hz, 1H), 2.86 (dd, J = 15.3, 7.7 Hz, 2H), 2.78 – 2.70 (m, 1H), 2.46 (s, 6H), 2.30 (s, 3H), 1.98 (dq, J = 14.3, 7.4 Hz, 1H), 1.77 (dt, J = 12.5, 5.7 Hz, 1H). Example 277: N-[5-[2-methyl-5-[(3S)-pyrrolidin-3-yl]oxy-4-pyridyl]pyrazol o[1,5-a]pyridin-2- yl]cyclopropanecarboxamide. 41 mg, 22%) was prepared as described in Example 276, except Intermediate 6 was used instead of Intermediate 15 in Step A. MS (ESI): mass calcd. for C21H23N5O2, 377.2; m/z found, 378.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 11.09 (s, 1H), 8.52 (d, J = 7.3 Hz, 1H), 8.28 (s, 1H), 7.80 (s, 1H), 7.32 (s, 1H), 7.05 – 7.00 (m, 1H), 6.89 (s, 1H), 4.97 (d, J = 5.6 Hz, 1H), 3.03 (t, J = 8.1 Hz, 1H), 2.87 (t, J = 13.7 Hz, 2H), 2.76 (s, 1H), 2.44 (s, 3H), 2.01 – 1.88 (m, 2H), 1.83 – 1.70 (m, 1H), 0.88 – 0.68 (m, 4H). Example 278: N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(3R,4S)-4-fluoropyrroli din-3-yl]oxy-2- methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. 2

The title compound (34 mg, 18%) was prepared as described in Example 280, except tert-butyl (3S,4R)-3-fluoro-4-hydroxypyrrolidine-1-carboxylate was used instead of tert-butyl (S)-3-hydroxypyrrolidine-1-carboxylate in Step A. MS (ESI): mass calcd. for C ₂₃ H ₂₄ FN ₇ O, 433.2; m/z found, 434.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.19 (s, 1H), 8.60 – 8.55 (m, 1H), 8.45 (s, 1H), 7.83 (dd, J = 2.0, 0.9 Hz, 1H), 7.38 (s, 1H), 7.05 (dd, J = 7.3, 2.0 Hz, 1H), 7.01 (s, 1H), 6.85 (s, 1H), 5.35 – 5.18 (m, 1H), 4.91 – 4.79 (m, 1H), 3.27 – 3.14 (m, 2H), 2.96 (dd, J = 26.1, 13.2 Hz, 1H), 2.83 – 2.71 (m, 1H), 2.47 (s, 3H), 2.46 (s, 3H), 2.30 (s, 3H). Example 279: N-[5-[5-[(3R,4S)-4-fluoropyrrolidin-3-yl]oxy-2-methyl-4-pyri dyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 12 mg, 9%) was prepared as described in Example 280, except Intermediate 6 was used instead of Intermediate 15 and tert-butyl (3S,4R)-3-fluoro-4- hydroxypyrrolidine-1-carboxylate was used instead of tert-butyl (S)-3-hydroxypyrrolidine-1- carboxylate in Step A. MS (ESI): mass calcd. for C ₂₁ H ₂₂ FN ₅ O ₂ , 395.2; m/z found, 396.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 11.07 (s, 1H), 8.56 (dd, J = 7.2, 1.0 Hz, 1H), 8.44 (s, 1H), 7.84 (dd, J = 2.0, 0.9 Hz, 1H), 7.37 (s, 1H), 7.08 (dd, J = 7.2, 2.0 Hz, 1H), 6.88 (s, 1H), 5.34 – 5.16 (m, 1H), 4.86 (dtd, J = 18.1, 7.1, 4.4 Hz, 1H), 3.26 – 3.12 (m, 2H), 3.00 – 2.89 (m, 1H), 2.79 (dd, J = 11.3, 7.3 Hz, 1H), 2.47 (s, 3H), 1.93 (tt, J = 7.6, 4.7 Hz, 1H), 0.87 – 0.77 (m, 4H). Example 280: N-[5-[2-prop-1-ynyl-5-[(3S)-pyrrolidin-3-yl]oxy-4-pyridyl]py razolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 303

t-butyl (S)-3-hydroxypyrrolidine-1-carboxylate (92 mg, 0.49 mmol, 1.10 equiv.) in DMA (2.60 mL) was added NaH (40 mg, 60% dispersion in mineral oil). The mixture was stirred at 23 °C for 5 min. To this was added Intermediate 11 (150 mg, 0.45 mmol), and the reaction was stirred at 23 °C for 20 minutes. Additional NaH (20 mg, 60% dispersion in mineral oil) was added at 23 °C and the resulting solution stirred for 3 hours. The reaction was quenched with sat. aq. NH ₄ Cl (4 mL) and extracted with EtOAc (3 x 5 mL). The organic extracts were dried with magnesium sulfate, filtered and concentrated in vacuo. The crude material was purified by silica gel chromatography (0-10% MeOH in DCM) to give tert- butyl (S)-3-((4-(2-(cyclopropanecarboxamido)pyrazolo[1,5-a]pyridin -5-yl)-6-(prop-1-yn-1- yl)pyridin-3-yl)oxy)pyrrolidine-1-carboxylate (90 mg, 40%). Step B: tert-butyl (S)-3-((4-(2-(cyclopropanecarboxamido)pyrazolo[1,5-a]pyridin -5-yl)- 6-(prop-1-yn-1-yl)pyridin-3-yl)oxy)pyrrolidine-1-carboxylate was dissolved in dichloromethane (0.3 mL) and trifluoroacetic acid (0.3 mL, 20.0 equiv.) and stirred for 30 minutes. The mixture was then concentrated in vacuo purified via prep HPLC (Basic ISCO, 10-80% AcN / 20 mM aq NH3) and lyophilized to yield the title compound as a white solid (30 mg, 16%). MS (ESI): mass calcd. for C ₂₃ H ₂₃ N ₅ O ₂ , 401.2; m/z found, 402.1 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 11.08 (s, 1H), 8.53 (dd, J = 7.2, 1.0 Hz, 1H), 8.38 (s, 1H), 7.85 (d, J = 2.2 Hz, 1H), 7.52 (s, 1H), 7.06 (dd, J = 7.3, 2.0 Hz, 1H), 6.89 (s, 1H), 5.12 – 5.05 (m, 1H), 3.06 (dd, J = 12.5, 5.1 Hz, 1H), 2.94 – 2.83 (m, 2H), 2.77 (ddd, J = 10.7, 8.1, 4.8 Hz, 1H), 2.06 (s, 3H), 2.05 – 1.99 (m, 1H), 1.96 – 1.89 (m, 1H), 1.83 – 1.75 (m, 1H), 0.82 (tt, J = 7.9, 3.0 Hz, 4H). Example 281: N-[5-[5-[(3R,4S)-4-fluoropyrrolidin-3-yl]oxy-2-prop-1-ynyl-4 - pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 304

, 27%) was prepared as described in Example 280, except tert- butyl (3S,4R)-3-fluoro-4-hydroxypyrrolidine-1-carboxylate was used instead of tert-butyl (S)-3- hydroxypyrrolidine-1-carboxylate in Step A. MS (ESI): mass calcd. for C ₂₃ H ₂₂ FN ₅ O ₂ , 419.2; m/z found, 420.1 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 11.09 (s, 1H), 8.59 – 8.52 (m, 2H), 7.88 (d, J = 1.9 Hz, 1H), 7.55 (s, 1H), 7.09 (dd, J = 7.3, 2.1 Hz, 1H), 6.88 (s, 1H), 5.39 – 5.21 (m, 1H), 5.03 – 4.91 (m, 1H), 3.29 – 3.10 (m, 2H), 3.02 – 2.88 (m, 1H), 2.86 – 2.76 (m, 1H), 2.07 (s, 3H), 1.93 (tt, J = 7.9, 4.8 Hz, 1H), 0.88 – 0.76 (m, 4H). Example 282: 6-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]amino]-2-isobutyl-4-methyl-pyridazin-3-one. utyl-4-methylpyridazin-3(2H)-one. To a mixture of 6-chloro-4- methylpyridazin-3(2h)-one (1 g, 6.92 mmol) and Cs2CO3 (5.64 g, 17.3 mmol) in DMF (13.8 mL, 6.92 mmol) was added 1-chloro-2-methylpropane (1.28 g, 13.8 mmol). The mixture was stirred at room temp for 16 hr, then worked-up in a separatory funnel with ethyl acetate/water/brine. The organic extracts were dried with Na2SO4, then purified via FCC (20% ethyl acetate in hexanes) to give 665 mg (48%) of the title compound. Step B: 6-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]amino]-2-isobutyl-4-methyl-pyridazin-3-one. The title compound (40 mg, 24%) was prepared as described in Example 224, except 1-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6- 305

methylpyridin-3-yl)oxy)-2-methylpropan-2-ol (Intermediate 20, 110 mg, 0.35 mmol) was used instead of (1r,4r)-4-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylp yridin-3- yl)oxy)cyclohexan-1-ol (Intermediate 12) and 6-chloro-2-isobutyl-4-methylpyridazin-3(2H)-one (78 mg, 0.39 mmol) was used instead of 4-chloro-2-ethyl-6-methylpyrimidine. MS (ESI): mass calcd. for C26H32N6O3, 476.3; m/z found, 477.3 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 9.74 (s, 1H), 8.56 – 8.51 (m, 1H), 8.30 (s, 1H), 7.91 – 7.85 (m, 1H), 7.39 (s, 1H), 7.25 – 7.17 (m, 1H), 7.08 (dd, J = 7.2, 2.0 Hz, 1H), 6.86 – 6.78 (m, 1H), 4.62 (s, 1H), 3.87 (s, 2H), 3.84 (d, J = 7.3 Hz, 2H), 2.46 (s, 3H), 2.30 – 2.20 (m, 1H), 2.09 (d, J = 1.3 Hz, 3H), 1.16 (s, 6H), 0.93 (d, J = 6.7 Hz, 6H). Example 283: 2-[2-(difluoromethoxy)ethyl]-6-[[5-[5-(4-hydroxycyclohexoxy) -2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-4-methyl-pyridazi n-3-one. p . difluoromethoxy)ethyl)-4-methylpyridazin-3(2H)-one. The title compound (1.15 g, 70%) was prepared as described in Example 282, Step A, except 1-bromo-2- (difluoromethoxy)ethane (1.63 g, 9.34 mmol) was used instead of 1-chloro-2-methylpropane. Step B.2-[2-(difluoromethoxy)ethyl]-6-[[5-[5-(4-hydroxycyclohexox y)-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-4-methyl-pyridazi n-3-one. The title compound (95 mg, 57%) was prepared as described in Example 224, except 6-chloro-2-(2- (difluoromethoxy)ethyl)-4-methylpyridazin-3(2H)-one (81 mg, 0.34 mmol) was used instead of 4-chloro-2-ethyl-6-methylpyrimidine. MS (ESI): mass calcd. for C27H30F2N6O4, 540.2; m/z found, 541.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.79 (s, 1H), 8.55 – 8.44 (m, 1H), 8.35 (s, 1H), 7.81 – 7.67 (m, 1H), 7.35 (s, 1H), 7.27 – 7.18 (m, 1H), 7.00 (dd, J = 7.2, 2.0 Hz, 1H), 6.91 – 6.48 (m, 2H), 4.51 (s, 1H), 4.44 – 4.35 (m, 1H), 4.33 – 4.21 (m, 4H), 3.55 – 3.43 (m, 1H), 306 2.46 (s, 3H), 2.10 (d, J = 1.3 Hz, 3H), 2.03 – 1.91 (m, 2H), 1.79 – 1.67 (m, 2H), 1.49 – 1.34 (m, 2H), 1.33 – 1.20 (m, 2H). Example 284: 2-[2-(difluoromethoxy)ethyl]-6-[[5-[5-(2-hydroxy-2-methyl-pr opoxy)-2-methyl- 4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-4-methyl-pyrida zin-3-one. N _N HN mg, 54%) was prepared as described in Example 283, except 1- ((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-y l)oxy)-2-methylpropan-2-ol (Intermediate 20, 110 mg, 0.35 mmol) was used instead of (1r,4r)-4-((4-(2-aminopyrazolo[1,5- a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)cyclohexan-1-ol (Intermediate 12) in Step B. MS (ESI): mass calcd. for C25H28F2N6O4, 514.2; m/z found, 515.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.79 (s, 1H), 8.58 – 8.49 (m, 1H), 8.31 (s, 1H), 7.86 – 7.80 (m, 1H), 7.37 (s, 1H), 7.24 (d, J = 1.4 Hz, 1H), 7.07 (dd, J = 7.2, 2.0 Hz, 1H), 6.91 – 6.45 (m, 2H), 4.61 (s, 1H), 4.34 – 4.22 (m, 4H), 3.87 (s, 2H), 2.47 (s, 3H), 2.12 – 2.08 (m, 3H), 1.15 (s, 6H). Example 285: 2-methyl-1-[[6-methyl-4-[2-[(6-methyl-2-pyrrolidin-1-yl-pyri midin-4- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]propan-2 -ol. mg, 7%) was prepared as described in Example 224, except 1- ((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-y l)oxy)-2-methylpropan-2-ol 307

(Intermediate 20, 110 mg, 0.35 mmol) was used instead of (1r,4r)-4-((4-(2-aminopyrazolo[1,5- a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)cyclohexan-1-ol (Intermediate 12) and 4-chloro-6- methyl-2-pyrrolidin-1-ylpyrimidine (77 mg, 0.39 mmol) was used instead of 4-chloro-2-ethyl-6- methylpyrimidine. MS (ESI): mass calcd. for C ₂₆ H ₃₁ N ₇ O ₂ , 473.3; m/z found, 474.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.88 (s, 1H), 8.57 – 8.51 (m, 1H), 8.30 (s, 1H), 7.91 – 7.87 (m, 1H), 7.40 (s, 1H), 7.10 – 7.05 (m, 2H), 6.17 (s, 1H), 4.62 (s, 1H), 3.87 (s, 2H), 3.59 – 3.47 (m, 4H), 2.46 (s, 3H), 2.16 (s, 3H), 1.97 – 1.90 (m, 4H), 1.16 (s, 6H). Example 286: 2-methyl-1-[[6-methyl-4-[2-[(6-methyl-2-morpholino-pyrimidin -4- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]propan-2 -ol. mg, 45%) was prepared as described in Example 224, except 1- ((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-y l)oxy)-2-methylpropan-2-ol (Intermediate 20, 110 mg, 0.35 mmol) was used instead of (1r,4r)-4-((4-(2-aminopyrazolo[1,5- a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)cyclohexan-1-ol (Intermediate 12) and 4-(4-chloro-6- methyl-2-pyrimidinyl)morpholine (83 mg, 0.39 mmol) was used instead of 4-chloro-2-ethyl-6- methylpyrimidine. MS (ESI): mass calcd. for C ₂₆ H ₃₁ N ₇ O ₃ , 489.2; m/z found, 490.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.97 (s, 1H), 8.60 – 8.52 (m, 1H), 8.31 (s, 1H), 7.93 – 7.88 (m, 1H), 7.39 (s, 1H), 7.07 (dd, J = 7.2, 2.0 Hz, 1H), 6.87 (s, 1H), 6.31 (s, 1H), 4.62 (s, 1H), 3.87 (s, 2H), 3.75 – 3.64 (m, 8H), 2.47 (s, 3H), 2.18 (s, 3H), 1.16 (s, 6H). Example 287: 4-[[6-methyl-4-[2-[(6-methyl-2-pyrrolidin-1-yl-pyrimidin-4- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]cyclohex anol. 308

mg, 16%) was prepared as described in Example 224, except 4- chloro-6-methyl-2-pyrrolidin-1-ylpyrimidine (129 mg, 0.65 mmol) was used instead of 4-chloro- 2-ethyl-6-methylpyrimidine. MS (ESI): mass calcd. for C ₂₈ H ₃₃ N ₇ O ₂ , 499.3; m/z found, 500.3 [M+H] ⁺ . ¹ H NMR (600 MHz, DMSO-d6) δ 9.87 (s, 1H), 8.54 – 8.50 (m, 1H), 8.34 (s, 1H), 7.79 – 7.74 (m, 1H), 7.37 (s, 1H), 7.06 (s, 1H), 7.00 (dd, J = 7.2, 2.0 Hz, 1H), 6.18 (s, 1H), 4.50 (d, J = 3.9 Hz, 1H), 4.45 – 4.36 (m, 1H), 3.62 – 3.44 (m, 5H), 2.45 (s, 3H), 2.16 (s, 3H), 2.00 – 1.90 (m, 6H), 1.76 – 1.70 (m, 2H), 1.46 – 1.37 (m, 2H), 1.33 – 1.24 (m, 2H). Example 288: 4-[[6-methyl-4-[2-[(6-methyl-2-morpholino-pyrimidin-4-yl)ami no]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]cyclohexanol. mg, 19%) was prepared as described in Example 224, except 4- (4-chloro-6-methyl-2-pyrimidinyl)morpholine (139 mg, 0.65 mmol) was used instead of 4- chloro-2-ethyl-6-methylpyrimidine. MS (ESI): mass calcd. for C28H33N7O3, 515.3; m/z found, 516.3 [M+H] ⁺ . ¹ H NMR (600 MHz, DMSO-d6) δ 9.96 (s, 1H), 8.54 (dd, J = 7.2, 0.9 Hz, 1H), 8.35 (s, 1H), 7.81 – 7.75 (m, 1H), 7.36 (s, 1H), 7.01 (dd, J = 7.2, 2.0 Hz, 1H), 6.86 (s, 1H), 6.32 (s, 1H), 4.51 (d, J = 3.9 Hz, 1H), 4.44 – 4.37 (m, 1H), 3.73 – 3.70 (m, 4H), 3.69 – 3.66 (m, 4H), 3.53 – 3.46 (m, 1H), 2.46 (s, 3H), 2.18 (s, 3H), 2.00 – 1.92 (m, 2H), 1.77 – 1.69 (m, 2H), 1.46 – 1.37 (m, 2H), 1.32 – 1.23 (m, 2H). 309

Example 289: 4-[[6-methyl-4-[2-(5H-pyrrolo[2,3-b]pyrazin-3-ylamino)pyrazo lo[1,5-a]pyridin- 5-yl]-3-pyridyl]oxy]cyclohexanol. 24 mg, 39%) was prepared as described in Example 224, except 3- chloro-5h-pyrrolo[2,3-b]pyrazine (22 mg, 0.15 mmol) was used instead of 4-chloro-2-ethyl-6- methylpyrimidine. MS (ESI): mass calcd. for C25H25N7O2, 455.2; m/z found, 456.3 [M+H] ⁺ . ¹ H NMR (600 MHz, DMSO-d6) δ 11.54 (s, 1H), 10.08 (s, 1H), 8.59 – 8.53 (m, 1H), 8.37 (d, J = 10.6 Hz, 2H), 7.78 – 7.73 (m, 1H), 7.41 (d, J = 3.6 Hz, 1H), 7.35 (s, 1H), 7.09 – 7.05 (m, 1H), 6.98 (dd, J = 7.1, 2.0 Hz, 1H), 6.48 (d, J = 3.5 Hz, 1H), 4.51 (d, J = 3.9 Hz, 1H), 4.47 – 4.38 (m, 1H), 3.54 – 3.47 (m, 1H), 2.46 (s, 3H), 2.02 – 1.94 (m, 2H), 1.77 – 1.71 (m, 2H), 1.46 – 1.37 (m, 2H), 1.33 – 1.24 (m, 2H). Example 290: (1r,4r)-4-((6-methyl-4-(2-(pyridin-3-ylamino)pyrazolo[1,5-a] pyridin-5- yl)pyridin-3-yl)oxy)cyclohexan-1-ol. 31 mg, 25%) was prepared as described in Example 224, except 3- bromopyridine was used instead of 4-chloro-2-ethyl-6-methylpyrimidine. MS (ESI): mass calcd. for C ₂₄ H ₂₅ N ₅ O ₂ , 415.20; m/z found, 416.2 [M+H] ⁺ .1H NMR (600 MHz, DMSO-d6) δ 9.19 (s, 310

1H), 8.71 (d, J = 2.7 Hz, 1H), 8.56 (dt, J = 7.2, 0.9 Hz, 1H), 8.35 (s, 1H), 8.06 - 7.98 (m, 2H), 7.68 (dd, J = 2.0, 0.9 Hz, 1H), 7.41 - 7.35 (m, 1H), 7.33 (s, 1H), 7.28 (dd, J = 8.3, 4.6 Hz, 1H), 6.92 (dd, J = 7.2, 2.0 Hz, 1H), 6.16 (d, J = 0.8 Hz, 1H), 4.49 (s, 1H), 4.40 (dq, J = 8.9, 4.9, 4.3 Hz, 1H), 3.53 - 3.46 (m, 1H), 2.45 (s, 3H), 1.97 (t, J = 8.8 Hz, 2H), 1.78 - 1.65 (m, 2H), 1.47 - 1.35 (m, 2H), 1.32 - 1.23 (m, 2H). Example 291: 2-methyl-1-[[6-methyl-4-[2-(5H-pyrrolo[2,3-b]pyrazin-3-ylami no)pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]propan-2-ol. 14 mg, 10%) was prepared as described in Example 224, except 1- ((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-y l)oxy)-2-methylpropan-2-ol (Intermediate 20, 100 mg, 0.32 mmol) was used instead of (1r,4r)-4-((4-(2-aminopyrazolo[1,5- a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)cyclohexan-1-ol (Intermediate 12) and 3-chloro-5h- pyrrolo[2,3-b]pyrazine (54 mg, 0.35 mmol) was used instead of 4-chloro-2-ethyl-6- methylpyrimidine. MS (ESI): mass calcd. for C ₂₃ H ₂₃ N ₇ O ₂ , 429.2; m/z found, 430.2 [M+H] ⁺ . ¹ H NMR (600 MHz, DMSO-d6) δ 11.56 (s, 1H), 10.08 (s, 1H), 8.61 – 8.55 (m, 1H), 8.38 (s, 1H), 8.32 (s, 1H), 7.88 – 7.82 (m, 1H), 7.42 – 7.39 (m, 1H), 7.37 (s, 1H), 7.06 – 7.03 (m, 2H), 6.48 (dd, J = 3.6, 1.5 Hz, 1H), 4.63 (s, 1H), 3.88 (s, 2H), 2.47 (s, 3H), 1.17 (s, 6H). Example 292: 2-methyl-1-[[6-methyl-4-[2-[(1-methylpyrazolo[3,4-b]pyridin- 3- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]propan-2 -ol. 11

The title compound (123 mg, 62%) was prepared as described in Example 224, except 1- ((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-y l)oxy)-2-methylpropan-2-ol (Intermediate 20, 140 mg, 0.45 mmol) was used instead of (1r,4r)-4-((4-(2-aminopyrazolo[1,5- a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)cyclohexan-1-ol (Intermediate 12) and 3-bromo-1- methyl-1h-pyrazolo[3,4-b]pyridine (105 mg, 0.49 mmol) was used instead of 4-chloro-2-ethyl-6- methylpyrimidine. MS (ESI): mass calcd. for C ₂₄ H ₂₅ N ₇ O ₂ , 443.2; m/z found, 444.3 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.16 (s, 1H), 8.56 – 8.53 (m, 1H), 8.53 – 8.48 (m, 2H), 8.32 (s, 1H), 7.89 – 7.86 (m, 1H), 7.36 (s, 1H), 7.10 (dd, J = 8.0, 4.6 Hz, 1H), 7.05 (dd, J = 7.2, 2.0 Hz, 1H), 6.99 – 6.95 (m, 1H), 4.64 (s, 1H), 3.96 (s, 3H), 3.88 (s, 2H), 2.47 (s, 3H), 1.17 (s, 6H). Example 293: 2-ethyl-6-[[5-[5-[[(2R,3S)-3-hydroxytetrahydrofuran-2-yl]met hoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-4-methyl-pyridazi n-3-one. mg, 66%) was prepared as described in Example 224, except (2R,3S)-2-(((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methyl pyridin-3- yl)oxy)methyl)tetrahydrofuran-3-ol (Intermediate 25, 102 mg, 0.3 mmol) was used instead of (1r,4r)-4-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylp yridin-3-yl)oxy)cyclohexan-1-ol (Intermediate 12) and 6-chloro-2-ethyl-4-methylpyridazin-3(2H)-one (Example 247, Step A, 57 mg, 0.33 mmol) was used instead of 4-chloro-2-ethyl-6-methylpyrimidine. MS (ESI): mass calcd. for C ₂₅ H ₂₈ N ₆ O ₄ , 476.2; m/z found, 477.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 9.75 (s, 1H), 8.57 – 8.51 (m, 1H), 8.34 (s, 1H), 7.89 – 7.83 (m, 1H), 7.38 (s, 1H), 7.24 – 7.19 (m, 1H), 7.04 (dd, J = 7.2, 2.0 Hz, 1H), 6.87 – 6.81 (m, 1H), 5.05 (s, 1H), 4.21 – 4.11 (m, 3H), 4.10 – 3.99 (m, 2H), 3.89 – 3.76 (m, 3H), 2.46 (s, 3H), 2.09 (d, J = 1.3 Hz, 3H), 1.99 – 1.90 (m, 1H), 1.75 – 1.65 (m, 1H), 1.32 (t, J = 7.2 Hz, 3H). 312

Example 294: (2R,3S)-2-[[6-methyl-4-[2-[(6-methyl-2-morpholino-pyrimidin- 4- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxymethyl]te trahydrofuran-3-ol. 2%) was prepared as described in Example 224, except (2R,3S)-2-(((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methyl pyridin-3- yl)oxy)methyl)tetrahydrofuran-3-ol (Intermediate 25, 102 mg, 0.3 mmol) was used instead of (1r,4r)-4-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylp yridin-3-yl)oxy)cyclohexan-1-ol (Intermediate 12) and 4-(4-chloro-6-methyl-2-pyrimidinyl)morpholine (70 mg, 0.33 mmol) was used instead of 4-chloro-2-ethyl-6-methylpyrimidine. MS (ESI): mass calcd. for C27H31N7O4, 517.2; m/z found, 518.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.97 (s, 1H), 8.60 – 8.51 (m, 1H), 8.34 (s, 1H), 7.92 – 7.81 (m, 1H), 7.38 (s, 1H), 7.03 (dd, J = 7.2, 2.0 Hz, 1H), 6.87 (s, 1H), 6.31 (s, 1H), 5.04 (s, 1H), 4.23 – 4.08 (m, 3H), 3.90 – 3.74 (m, 3H), 3.74 – 3.65 (m, 8H), 2.46 (s, 3H), 2.18 (s, 3H), 2.00 – 1.89 (m, 1H), 1.74 – 1.65 (m, 1H). Example 295: (2R,3S)-2-[[4-[2-[[5-(difluoromethyl)pyrazin-2-yl]amino]pyra zolo[1,5-a]pyridin- 5-yl]-6-methyl-3-pyridyl]oxymethyl]tetrahydrofuran-3-ol. g, 6%) was prepared as described in Example 224, except (2R,3S)-2-(((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methyl pyridin-3- yl)oxy)methyl)tetrahydrofuran-3-ol (Intermediate 25, 140 mg, 0.41 mmol) was used instead of 313

(1r,4r)-4-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-meth ylpyridin-3-yl)oxy)cyclohexan-1-ol (Intermediate 12) and 2-chloro-5-(difluoromethyl)pyrazine (74 mg, 0.45 mmol) was used instead of 4-chloro-2-ethyl-6-methylpyrimidine. MS (ESI): mass calcd. for C ₂₃ H ₂₂ F ₂ N ₆ O ₃ , 468.2; m/z found, 469.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.73 (s, 1H), 8.66 – 8.60 (m, 2H), 8.52 – 8.48 (m, 1H), 8.38 – 8.32 (m, 1H), 7.89 – 7.84 (m, 1H), 7.35 (s, 1H), 7.07 (dd, J = 7.2, 2.0 Hz, 1H), 7.00 – 6.84 (m, 2H), 5.04 (d, J = 4.2 Hz, 1H), 4.20 – 4.11 (m, 3H), 3.89 – 3.84 (m, 1H), 3.84 – 3.74 (m, 2H), 2.47 (s, 3H), 1.98 – 1.87 (m, 1H), 1.74 – 1.64 (m, 1H). Example 296: 2-[2-(difluoromethoxy)ethyl]-6-[[5-[5-[[(2R,3S)-3-hydroxytet rahydrofuran-2- yl]methoxy]-2-methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]a mino]-4-methyl-pyridazin-3-one. mg, 32%) was prepared as described in Example 224, except (2R,3S)-2-(((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methyl pyridin-3- yl)oxy)methyl)tetrahydrofuran-3-ol (Intermediate 25, 102 mg, 0.3 mmol) was used instead of (1r,4r)-4-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylp yridin-3-yl)oxy)cyclohexan-1-ol (Intermediate 12) and 6-chloro-2-(2-(difluoromethoxy)ethyl)-4-methylpyridazin-3(2H )-one (Example 283, Step A, 79 mg, 0.33 mmol) was used instead of 4-chloro-2-ethyl-6- methylpyrimidine. MS (ESI): mass calcd. for C26H28F2N6O5, 542.2; m/z found, 543.2 [M+H] ⁺ . 1H NMR (500 MHz, DMSO-d6) δ 9.80 (s, 1H), 8.57 – 8.53 (m, 1H), 8.35 (s, 1H), 7.85 – 7.80 (m, 1H), 7.37 (s, 1H), 7.25 – 7.22 (m, 1H), 7.04 (dd, J = 7.2, 2.0 Hz, 1H), 6.86 – 6.85 (m, 1H), 6.84 – 6.52 (m, 1H), 5.05 (s, 1H), 4.32 – 4.24 (m, 4H), 4.20 – 4.10 (m, 3H), 3.89 – 3.76 (m, 3H), 2.47 (s, 3H), 2.13 – 2.09 (m, 3H), 1.99 – 1.89 (m, 1H), 1.73 – 1.67 (m, 1H). 314

Example 297: (2R,3S)-2-[[6-methyl-4-[2-[(6-methylpyrazin-2-yl)amino]pyraz olo[1,5-a]pyridin- 5-yl]-3-pyridyl]oxymethyl]tetrahydrofuran-3-ol. mg, 55%) was prepared as described in Example 224, except (2R,3S)-2-(((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methyl pyridin-3- yl)oxy)methyl)tetrahydrofuran-3-ol (Intermediate 25, 102 mg, 0.3 mmol) was used instead of (1r,4r)-4-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylp yridin-3-yl)oxy)cyclohexan-1-ol (Intermediate 12) and 2-bromo-6-methylpyrazine (57 mg, 0.33 mmol) was used instead of 4- chloro-2-ethyl-6-methylpyrimidine. MS (ESI): mass calcd. for C ₂₃ H ₂₄ N ₆ O ₃ , 432.2; m/z found, 433.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.16 (s, 1H), 8.61 – 8.57 (m, 1H), 8.49 (s, 1H), 8.34 (s, 1H), 7.91 (s, 1H), 7.85 – 7.81 (m, 1H), 7.36 (s, 1H), 7.03 (dd, J = 7.2, 2.0 Hz, 1H), 6.92 – 6.87 (m, 1H), 5.05 (s, 1H), 4.21 – 4.10 (m, 3H), 3.90 – 3.74 (m, 3H), 2.47 (s, 3H), 2.42 (s, 3H), 1.99 – 1.89 (m, 1H), 1.74 – 1.66 (m, 1H). Example 298: (2R,3S)-2-[[4-[2-[(2-tert-butyl-6-methyl-pyrimidin-4-yl)amin o]pyrazolo[1,5- a]pyridin-5-yl]-6-methyl-3-pyridyl]oxymethyl]tetrahydrofuran -3-ol. g, 45%) was prepared as described in Example 224, except (2R,3S)-2-(((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methyl pyridin-3- yl)oxy)methyl)tetrahydrofuran-3-ol (Intermediate 25, 102 mg, 0.3 mmol) was used instead of (1r,4r)-4-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylp yridin-3-yl)oxy)cyclohexan-1-ol (Intermediate 12) and 2-tert-butyl-4-chloro-6-methylpyrimidine (61 mg, 0.33 mmol) was used 315

instead of 4-chloro-2-ethyl-6-methylpyrimidine. MS (ESI): mass calcd. for C27H32N6O3, 488.3; m/z found, 489.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.18 (s, 1H), 8.60 – 8.55 (m, 1H), 8.34 (s, 1H), 7.92 – 7.87 (m, 1H), 7.40 (s, 1H), 7.05 (dd, J = 7.2, 2.0 Hz, 2H), 6.81 (s, 1H), 5.04 (d, J = 3.9 Hz, 1H), 4.23 – 4.09 (m, 3H), 3.89 – 3.83 (m, 2H), 3.83 – 3.77 (m, 1H), 2.47 (s, 3H), 2.32 (s, 3H), 2.00 – 1.91 (m, 1H), 1.74 – 1.66 (m, 1H), 1.37 (s, 9H). Example 299: (2R,3S)-2-[[6-methyl-4-[2-[(1-methylindazol-3-yl)amino]pyraz olo[1,5-a]pyridin- 5-yl]-3-pyridyl]oxymethyl]tetrahydrofuran-3-ol. mg, 66%) was prepared as described in Example 224, except (2R,3S)-2-(((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methyl pyridin-3- yl)oxy)methyl)tetrahydrofuran-3-ol (Intermediate 25, 102 mg, 0.3 mmol) was used instead of (1r,4r)-4-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylp yridin-3-yl)oxy)cyclohexan-1-ol (Intermediate 12) and 3-bromo-1-methyl-1h-indazole (70 mg, 0.33 mmol) was used instead of 4- chloro-2-ethyl-6-methylpyrimidine. MS (ESI): mass calcd. for C ₂₆ H ₂₆ N ₆ O ₃ , 470.2; m/z found, 471.3 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 9.86 (s, 1H), 8.55 – 8.47 (m, 1H), 8.34 (s, 1H), 8.13 – 8.03 (m, 1H), 7.84 – 7.77 (m, 1H), 7.49 – 7.43 (m, 1H), 7.40 – 7.33 (m, 2H), 7.05 – 7.00 (m, 1H), 7.00 – 6.96 (m, 2H), 5.05 (d, J = 3.5 Hz, 1H), 4.20 – 4.07 (m, 3H), 3.93 (s, 3H), 3.90 – 3.86 (m, 1H), 3.85 – 3.76 (m, 2H), 2.47 (s, 3H), 2.00 – 1.90 (m, 1H), 1.75 – 1.66 (m, 1H). Example 300: (2R,3S)-2-[[4-[2-[(1-methylpyrazol-4-yl)amino]pyrazolo[1,5-a ]pyridin-5-yl]-6- prop-1-ynyl-3-pyridyl]oxymethyl]tetrahydrofuran-3-ol. 316

chloro-4-iodopyridin-3-yl)oxy)methyl)tetrahydrofuran-3-ol. To a vial was added 6-chloro-4-iodopyridin-3-ol (929 mg, 3.64 mmol), ((2R,3S)-3- hydroxytetrahydrofuran-2-yl)methyl 4-methylbenzenesulfonate (Intermediate 25, Step A, 825 mg, 3.03 mmol), cesium carbonate (2.37 g, 7.27 mmol), and DMF (8.66 mL, 3.03 mmol). The mixture was heated at 60 °C for 21 h, then worked-up in a separatory funnel using ethyl acetate/water/brine. The organic layer was separated, dried with Na ₂ SO ₄ , and purified via FCC (40-100% ethyl acetate in hexanes) to yield the title compound (745 mg, 69%). Step B: (2R,3S)-2-(((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-chloro pyridin-3- yl)oxy)methyl)tetrahydrofuran-3-ol. The title compound (543 mg, 72%) was prepared as described in Intermediate 25, Step C, except (2R,3S)-2-(((6-chloro-4-iodopyridin-3- yl)oxy)methyl)tetrahydrofuran-3-ol (740 mg, 2.08 mmol) was used instead of (2R,3S)-2-(((4- bromo-6-methylpyridin-3-yl)oxy)methyl)tetrahydrofuran-3-ol. Step C: (2R,3S)-2-(((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-(prop- 1-yn-1-yl)pyridin- 3-yl)oxy)methyl)tetrahydrofuran-3-ol. To a vial was added (2R,3S)-2-(((4-(2- aminopyrazolo[1,5-a]pyridin-5-yl)-6-chloropyridin-3-yl)oxy)m ethyl)tetrahydrofuran-3-ol (540 mg, 1.50 mmol), 1,1'-bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (61.8 mg, 0.07 mmol), and 1,4-dioxane (5.99 mL, 1.50 mmol). The vial was capped, then evacuated and backfilled with nitrogen (3x). Tributyl(1-propynyl)tin (0.91 mL, 3.00 mmol) was injected to the vial, and the reaction was heated at 70 °C for 2 h. The reaction mixture was filtered through Celite and concentrated, then purified via FCC (0-100% ethyl acetate (with 10% methanol) in hexanes) to yield the title compound (448 mg, 82%). Step D: (2R,3S)-2-[[4-[2-[(1-methylpyrazol-4-yl)amino]pyrazolo[1,5-a ]pyridin-5-yl]-6- prop-1-ynyl-3-pyridyl]oxymethyl]tetrahydrofuran-3-ol. The title compound (19.8 mg, 16%) was prepared as described in Example 224, except (2R,3S)-2-(((4-(2-aminopyrazolo[1,5-a]pyridin-5- yl)-6-(prop-1-yn-1-yl)pyridin-3-yl)oxy)methyl)tetrahydrofura n-3-ol (100 mg, 0.27 mmol) was 317

used instead of (1r,4r)-4-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylp yridin-3- yl)oxy)cyclohexan-1-ol (Intermediate 12) and 4-bromo-1-methyl-1h-pyrazole (50 mg, 0.30 mmol) was used instead of 4-chloro-2-ethyl-6-methylpyrimidine. MS (ESI): mass calcd. for C24H24N6O3, 444.2; m/z found, 445.1 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 8.46 – 8.43 (m, 2H), 8.41 (s, 1H), 7.78 – 7.74 (m, 1H), 7.65 – 7.62 (m, 1H), 7.49 (s, 1H), 7.39 – 7.35 (m, 1H), 6.85 (dd, J = 7.2, 2.0 Hz, 1H), 5.91 – 5.89 (m, 1H), 5.04 (s, 1H), 4.25 – 4.14 (m, 3H), 3.89 – 3.81 (m, 2H), 3.80 (s, 3H), 3.79 – 3.74 (m, 1H), 2.06 (s, 3H), 1.97 – 1.87 (m, 1H), 1.72 – 1.65 (m, 1H). Example 301: (2R,3S)-2-[[4-[2-[(1-methylpyrazol-3-yl)amino]pyrazolo[1,5-a ]pyridin-5-yl]-6- prop-1-ynyl-3-pyridyl]oxymethyl]tetrahydrofuran-3-ol. .2 mg, 9%) was prepared as described in Example 300, except 3- bromo-1-methyl-1h-pyrazole (49 mg, 0.30 mmol) was used in Step D instead of 4-bromo-1- methyl-1h-pyrazole. MS (ESI): mass calcd. for C ₂₄ H ₂₄ N ₆ O ₃ , 444.2; m/z found, 445.2 [M+H] ⁺ . 1H NMR (500 MHz, DMSO-d6) δ 9.06 (s, 1H), 8.44 (dd, J = 7.2, 0.9 Hz, 1H), 8.41 (s, 1H), 7.74 – 7.69 (m, 1H), 7.52 – 7.47 (m, 2H), 6.89 (dd, J = 7.2, 2.0 Hz, 1H), 6.44 – 6.38 (m, 1H), 6.06 (d, J = 2.2 Hz, 1H), 5.05 (s, 1H), 4.27 – 4.13 (m, 3H), 3.89 – 3.85 (m, 1H), 3.84 – 3.75 (m, 2H), 3.73 (s, 3H), 2.06 (s, 3H), 1.96 – 1.88 (m, 1H), 1.72 – 1.66 (m, 1H). Example 302: N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[[(1S,4S)-5-oxa-2-azabic yclo[2.2.1]heptan- 4-yl]methoxy]-2-prop-1-ynyl-4-pyridyl]pyrazolo[1,5-a]pyridin -2-amine. 318

-(((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5- a]pyridin-5-yl)-6-(prop-1-yn-1-yl)pyridin-3-yl)oxy)methyl)-2 -oxa-5-azabicyclo[2.2.1]heptane-5- carboxylate. The title compound (100 mg, 83%) was prepared as described in Example 300, step C except tert-butyl (1S,4S)-1-(((6-chloro-4-(2-((2,6-dimethylpyrimidin-4-yl)amin o)pyrazolo[1,5- a]pyridin-5-yl)pyridin-3-yl)oxy)methyl)-2-oxa-5-azabicyclo[2 .2.1]heptane-5-carboxylate (Example 303, Step B) was used instead of (2R,3S)-2-(((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)- 6-chloropyridin-3-yl)oxy)methyl)tetrahydrofuran-3-ol. Step B: N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[[(1S,4S)-5-oxa-2-azabic yclo[2.2.1]heptan- 4-yl]methoxy]-2-prop-1-ynyl-4-pyridyl]pyrazolo[1,5-a]pyridin -2-amine. The title compound (60 mg, 73%) was prepared as described in Example 9, Step B, except tert-butyl (1S,4S)-1-(((4-(2- ((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyridin-5- yl)-6-(prop-1-yn-1-yl)pyridin-3- yl)oxy)methyl)-2-oxa-5-azabicyclo[2.2.1]heptane-5-carboxylat e was used instead of tert-butyl 4- ((6-cyano-4-(2-(cyclopropanecarboxamido)pyrazolo[1,5-a]pyrid in-5-yl)pyridin-3-yl)oxy)-4- (trifluoromethyl)piperidine-1-carboxylate. MS (ESI): mass calcd. for C ₂₇ H ₂₇ N ₇ O ₂ , 481.2; m/z found, 482.3 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.20 (s, 1H), 8.63 – 8.55 (m, 1H), 8.46 (s, 1H), 7.94 – 7.84 (m, 1H), 7.55 (s, 1H), 7.07 (dd, J = 7.2, 2.0 Hz, 1H), 7.02 (s, 1H), 6.85 (s, 1H), 4.54 (s, 2H), 3.79 (dd, J = 6.9, 1.8 Hz, 1H), 3.69 (d, J = 6.9 Hz, 1H), 3.58 – 3.49 (m, 1H), 2.90 (d, J = 9.7 Hz, 1H), 2.86 – 2.80 (m, 1H), 2.46 (s, 3H), 2.30 (s, 3H), 2.07 (s, 3H), 1.70 – 1.59 (m, 2H). Example 303: 5-[2-chloro-5-[[(1S,4S)-5-oxa-2-azabicyclo[2.2.1]heptan-4-yl ]methoxy]-4- pyridyl]-N-(2,6-dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridi n-2-amine. 319

The title compound was prepared using a similar tosic acid displacement method described in Example 188, except Intermediate 26 was used instead of Intermediate 7, and tert- butyl (1S,4S)-1-((tosyloxy)methyl)-2-oxa-5-azabicyclo[2.2.1]heptan e-5-carboxylate was used instead of 4,4-difluoro-(1-hydroxycyclohexyl)methyl 4-methylbenzenesulfonate. This was followed by a Boc-deprotection step similar to that described in Example 9, Step B. MS (ESI): mass calcd. for C ₂₄ H ₂₄ ClN ₇ O ₂ , 477.2; m/z found, 478.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO- d6) δ 10.22 (s, 1H), 8.65 – 8.57 (m, 1H), 8.35 (s, 1H), 7.96 – 7.89 (m, 1H), 7.63 (s, 1H), 7.08 (dd, J = 7.2, 2.0 Hz, 1H), 7.01 (s, 1H), 6.88 (s, 1H), 4.52 (s, 2H), 3.79 (dd, J = 6.9, 1.8 Hz, 1H), 3.69 (d, J = 6.9 Hz, 1H), 3.56 – 3.49 (m, 1H), 2.90 (d, J = 9.7 Hz, 1H), 2.85 – 2.80 (m, 1H), 2.46 (s, 3H), 2.30 (s, 3H), 1.69 – 1.58 (m, 2H). Example 304: (*S)-5-[5-(2-amino-3,3,3-trifluoro-2-methyl-propoxy)-2-methy l-4-pyridyl]-N- (2,6-dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. 2 mg, 45%) was prepared as described in Example 198, except 2- amino-3,3,3-trifluoro-2-methylpropan-1-ol HCl (1.50 equiv.) was used instead of trans-1,4- cyclohexanediol to give racemate which was further purified by SFC over Lux-Cellulose-4 (2 x 25 cm), (eluent: 40% (v/v) supercritical CO2 in MeOH with 0.1% DEA). The second elute isomer was designated as *S isomer. MS (ESI): mass calcd. for C23H24F3N7O, 471.2; m/z found, 320

472.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Chloroform-d) δ 8.41 (dt, J = 7.3, 0.9 Hz, 1H), 8.27 (s, 1H), 7.62 (dd, J = 2.0, 0.9 Hz, 1H), 7.55 (s, 1H), 7.20 (s, 1H), 7.11 (s, 1H), 6.94 (dd, J = 7.2, 1.9 Hz, 1H), 6.58 (s, 1H), 4.22 (d, J = 9.4 Hz, 1H), 3.98 (dd, J = 9.5, 1.3 Hz, 1H), 3.51 (s, 0H), 2.61 (d, J = 17.2 Hz, 6H), 2.47 (s, 3H), 1.60 (s, 2H), 1.31 (s, 3H). Example 305: 2,4-dimethyl-6-((5-(2-methyl-5-(((1s,4s)-4- (methylsulfonyl)cyclohexyl)oxy)pyridin-4-yl)pyrazolo[1,5-a]p yridin-2-yl)amino)pyridazin- 3(2H)-one. mg, 22%) was prepared as described in Example 269, except 4- (methylsulfonyl)cyclohexanol (1.50 equiv.) was used instead of trans-1,4-cyclohexanediol to give 2,4-dimethyl-6-((5-(2-methyl-5-((4-(methylsulfonyl)cyclohexy l)oxy)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)amino)pyridazin-3(2H)-one which was separated by chiral SFC (AS-H, (2 x 25cm), 55% isopropanol/CO2), followed by SFC (SFC-B (2 x 25cm), 25% MeOH/CO ₂ , 60% CO ₂ ) to afford two peaks. The first elute isomer was designated as *S,S isomer. MS (ESI): mass calcd. for C ₂₆ H ₃₀ N ₆ O ₄ S, 522.2; m/z found, 523.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Chloroform-d) δ 8.36 – 8.30 (m, 1H), 8.28 (s, 1H), 7.66 (dd, J = 2.0, 0.9 Hz, 1H), 7.21 (s, 1H), 7.19 – 7.12 (m, 2H), 6.94 (dd, J = 7.2, 2.0 Hz, 1H), 6.78 (d, J = 0.8 Hz, 1H), 3.79 (s, 3H), 2.93 – 2.82 (m, 1H), 2.57 (d, J = 12.3 Hz, 6H), 2.30 – 2.23 (m, 3H), 2.06 – 1.98 (m, 2H), 1.87 – 1.80 (m, 3H), 1.79 (dd, J = 13.0, 3.6 Hz, 1H), 1.62 – 1.58 (m, 2H). 321

Example 306: 2,4-dimethyl-6-((5-(2-methyl-5-(((1r,4r)-4- (methylsulfonyl)cyclohexyl)oxy)pyridin-4-yl)pyrazolo[1,5-a]p yridin-2-yl)amino)pyridazin- 3(2H)-one. mg, 18%) was prepared as described in Example 305, except the second elute isomer was designated as *r,r isomer. MS (ESI): mass calcd. for C26H30N6O4S, 522.2; m/z found, [M+H] ⁺ . ¹ H NMR (500 MHz, Chloroform-d) δ 8.32 – 8.27 (m, 2H), 7.62 (dd, J = 2.0, 0.9 Hz, 1H), 7.20 (s, 1H), 7.12 (q, J = 1.3 Hz, 1H), 6.96 – 6.88 (m, 2H), 6.72 (d, J = 0.8 Hz, 1H), 3.79 (s, 3H), 2.85 (s, 3H), 2.89 – 2.79 (m, 1H), 2.58 (s, 3H), 2.35 – 2.23 (m, 6H), 2.24 (d, J = 3.7 Hz, 1H), 1.72 (d, J = 3.2 Hz, 1H), 1.65 (dd, J = 13.3, 3.3 Hz, 1H), 1.52 – 1.42 (m, 2H). Example 307: 2,2-dimethyl-3-[[6-methyl-4-[2-(1H-pyrrolo[2,3-b]pyridin-6- ylamino)pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]propaneni trile. sisting of Intermediate 8 (500 mg, 2.06 mmol), 6-bromo-1H- pyrrolo[2,3-b]pyridine (447 mg, 2.27 mmol), tBuBrettphos-Pd-G3 (88 mg, 0.10 mmol), Cs2CO3 (1.35 g, 4.13 mmol) and 1,4-dioxane (8.8 mL) was sonicated under vacuum for 2 minutes, then vented with Argon. The mixture was stirred at 80 °C for 3 hours before being cooled to 23 °C. 322 The mixture was filtered through celite and concentrated to dryness in vacuo to give the crude product, which was purified by silica gel chromatography (0-10% 2N NH3 in MeOH/DCM) to give N-(5-(5-fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2 -yl)-1H-pyrrolo[2,3- b]pyridin-6-amine as a yellow solid (620 mg, 84% yield). Step B: To a solution of 3-hydroxy-2,2-dimethylpropanenitrile (103 mg, 1.05 mmol) in NMP (2.10 mL) was added NaH (110 mg, 60% dispersion in mineral oil). The mixture allowed to stir at 23 °C for 10 min. To this was N-(5-(5-fluoro-2-methylpyridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)-1H-pyrrolo[2,3-b]pyridin-6-amine (250 mg, 0.70 mmol), and the reaction was stirred at 80 °C for 16 hours. The reaction was cooled to 23 °C and quenched with MeOH and then concentrated in vacuo. The crude mixture was purified via prep HPLC (Basic ISCO, 20- 70% AcN / 20 mM aq NH4OH) and lyophilized to yield the title compound as a white solid (115 mg, 38%). MS (ESI): mass calcd. for C25H23N7O, 437.2; m/z found, 438.2 [M+H] ⁺ . ¹ H NMR (400 MHz, Chloroform-d) δ 8.38 – 8.33 (m, 1H), 8.17 (s, 1H), 7.86 (dd, J = 8.4, 0.9 Hz, 1H), 7.72 (dt, J = 2.0, 0.9 Hz, 1H), 7.32 (s, 1H), 7.26 (s, 1H), 7.12 (dd, J = 3.5, 0.9 Hz, 1H), 7.03 (dd, J = 8.4, 0.9 Hz, 1H), 6.96 – 6.91 (m, 1H), 6.86 (d, J = 1.0 Hz, 1H), 6.41 (dd, J = 3.5, 1.0 Hz, 1H), 4.02 (d, J = 0.8 Hz, 2H), 2.58 (d, J = 0.8 Hz, 3H), 1.42 (d, J = 0.9 Hz, 6H). Example 308: 3-[[4-[2-(imidazo[1,2-b]pyridazin-6-ylamino)pyrazolo[1,5-a]p yridin-5-yl]-6- methyl-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. N _N HN , 21%) was prepared as described in Example 307, except 6- chloroimidazo[1,2,b]pyridazine was used instead of 6-bromo-1H-pyrrolo[2,3-b]pyridine in Step A. MS (ESI): mass calcd. for C ₂₄ H ₂₂ N ₈ O, 438.2; m/z found, 439.2 [M+H] ⁺ . ¹ H NMR (400 MHz, Chloroform-d) δ 8.36 (dt, J = 7.1, 0.9 Hz, 1H), 8.23 (s, 1H), 7.86 – 7.79 (m, 2H), 7.73 (dd, J = 2.0, 1.0 Hz, 1H), 7.63 (d, J = 1.1 Hz, 1H), 7.49 (s, 1H), 7.23 (s, 1H), 7.07 – 6.97 (m, 2H), 6.92 323

(d, J = 9.8 Hz, 1H), 4.01 (s, 2H), 3.49 (d, J = 4.6 Hz, 1H), 2.59 (s, 3H), 1.42 (s, 6H), 1.10 (d, J = 5.6 Hz, 0H). Example 309: 2,2-dimethyl-3-[[6-methyl-4-[2-[[6-methyl-2-(methylamino)pyr imidin-4- yl]amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]propanen itrile. mg, 41%) was prepared as described in Example 307, except 4- chloro-N,6-dimethylpyrimidin-2-amine was used instead of 6-bromo-1H-pyrrolo[2,3-b]pyridine in Step A. MS (ESI): mass calcd. for C ₂₄ H ₂₆ N ₈ O, 442.2; m/z found, 443.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Chloroform-d) δ 8.38 (dt, J = 7.2, 0.9 Hz, 1H), 8.22 (s, 1H), 7.79 (s, 1H), 7.70 (dd, J = 1.9, 0.9 Hz, 1H), 7.22 (s, 1H), 6.98 (dd, J = 7.2, 2.0 Hz, 1H), 6.80 (s, 1H), 6.32 (s, 1H), 5.18 (d, J = 6.0 Hz, 1H), 3.99 (s, 2H), 3.04 (d, J = 5.0 Hz, 3H), 2.58 (s, 3H), 2.29 (s, 3H), 1.40 (s, 6H). Example 310: 3-[[4-[2-[(2-cyclopropyl-6-methyl-pyrimidin-4-yl)amino]pyraz olo[1,5-a]pyridin- 5-yl]-6-methyl-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. mg, 74%) was prepared as described in Example 307, except 4- chloro-2-cyclopropyl-6-methylpyrimidine was used instead of 6-bromo-1H-pyrrolo[2,3- b]pyridine in Step A. MS (ESI): mass calcd. for C26H27N7O, 453.2; m/z found, 454.2 [M+H] ⁺ . 1H NMR (500 MHz, Chloroform-d) δ 8.57 (d, J = 2.5 Hz, 1H), 8.47 - 8.41 (m, 1H), 8.24 (s, 1H), 7.72 (dd, J = 1.9, 0.9 Hz, 1H), 7.24 (s, 1H), 7.02 (dd, J = 7.2, 2.0 Hz, 1H), 6.84 (s, 1H), 6.73 (s, 324

1H), 4.00 (s, 2H), 2.58 (s, 3H), 2.40 (s, 3H), 2.17 - 2.11 (m, 1H), 1.41 (s, 6H), 1.18 (dt, J = 6.3, 3.2 Hz, 2H), 1.05 - 0.95 (m, 2H). Example 311: (*R)-6-[[5-[5-(2-amino-3,3,3-trifluoro-2-methyl-propoxy)-2-m ethyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-2,4-dimethyl-pyri dazin-3-one. -2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-2,4 - dimethylpyridazin-3(2H)-one. The title compound (1.2 g, 80%) was prepared as described in Example 260 except 5-(5-Fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-am ine (Intermediate 8, 1 g, 4.13 mmol) was used instead of 1-((4-(2-aminopyrazolo[1,5-a]pyridin-5- yl)-6-methylpyridin-3-yl)oxy)-2-methylpropan-2-ol and 6-chloro-2,4-dimethylpyridazin-3(2h)- one was used instead of 6-chloroimidazo[1,2-b]pyridazine. Step B: (*R)-6-[[5-[5-(2-amino-3,3,3-trifluoro-2-methyl-propoxy)-2-m ethyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-2,4-dimethyl-pyri dazin-3-one. The title compound (205 mg, 31%) was prepared as described in Example 136 except 6-((5-(5-fluoro-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-2,4-di methylpyridazin-3(2H)-one (500 mg, 1.37 mmol) was used instead of N-(5-(5-fluoro-2-methylpyridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide and 2-amino-3,3,3-trifluoro-2-methylpropan-1-ol HCl (370 mg, 2.06 mmol) was used instead of endo-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride. A further purification by chiral SFC (Lux-Cellulose-4 (2 x 25 cm), 35% ethanol (0.1% DEA)/ CO ₂ , 100 bar, 50 mL/min, 220 nm) was performed and the first isomer to elute was designated as the *R isomer (205 mg, 31%). MS (ESI): mass calcd. for C23H24F3N7O2, 487.2; m/z found, 488.2 [M+H] ⁺ . ¹ H NMR (400 MHz, Chloroform-d) δ 8.32 – 8.23 (m, 2H), 7.60 (dd, J 325

= 1.9, 0.9 Hz, 1H), 7.18 (s, 1H), 7.12 (d, J = 1.3 Hz, 1H), 7.06 (s, 1H), 6.90 (dd, J = 7.2, 1.9 Hz, 1H), 6.68 (d, J = 0.8 Hz, 1H), 4.20 (d, J = 9.4 Hz, 1H), 3.95 (dt, J = 9.5, 1.3 Hz, 1H), 3.77 (s, 3H), 2.57 (s, 3H), 2.25 (d, J = 1.2 Hz, 3H), 1.74 (s, 2H), 1.32 – 1.20 (m, 3H), Example 312: (*S)-6-[[5-[5-(2-amino-3,3,3-trifluoro-2-methyl-propoxy)-2-m ethyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-2,4-dimethyl-pyri dazin-3-one. 0 mg, 31%) was prepared as described in Example 311 except the title compound is the second peak to elute from the chiral SFC and is designated as the *S isomer. MS (ESI): mass calcd. for C ₂₃ H ₂₄ F ₃ N ₇ O ₂ , 487.2; m/z found, 488.2 [M+H] ⁺ . ¹ H NMR (400 MHz, Chloroform-d) δ 8.32 – 8.23 (m, 2H), 7.60 (dd, J = 2.0, 0.9 Hz, 1H), 7.18 (s, 1H), 7.15 – 7.04 (m, 2H), 6.90 (dd, J = 7.2, 1.9 Hz, 1H), 6.68 (d, J = 0.8 Hz, 1H), 4.20 (d, J = 9.5 Hz, 1H), 3.95 (dt, J = 9.3, 1.3 Hz, 1H), 3.77 (s, 3H), 2.57 (s, 3H), 2.25 (d, J = 1.3 Hz, 3H), 1.75 (s, 2H), 1.32 – 1.20 (m, 3H). Example 313: 1-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- methyl-3-pyridyl]oxymethyl]cyclopropanecarboxamide. 326

6 mg, 74%) was prepared as described in Example 136 except N- (2,6-dimethylpyrimidin-4-yl)-5-(5-fluoro-2-methylpyridin-4-y l)pyrazolo[1,5-a]pyridin-2-amine (Intermediate 15, 250 mg, 0.72 mmol) was used instead of N-(5-(5-fluoro-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide and 1- (hydroxymethyl)cyclopropanecarboxamide (124 mg, 1.08 mmol) was used instead of endo-7- hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C24H25N7O2, 443.2; m/z found, 442.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Chloroform-d) δ 9.05 (s, 1H), 8.36 – 8.30 (m, 1H), 8.26 (s, 1H), 7.60 (dd, J = 2.0, 0.9 Hz, 1H), 7.18 (s, 1H), 6.96 (s, 1H), 6.91 (dd, J = 7.2, 2.0 Hz, 1H), 6.69 (s, 1H), 6.32 (s, 1H), 4.14 (s, 2H), 2.70 (s, 1H), 2.55 (d, J = 9.6 Hz, 6H), 2.38 (s, 3H), 1.37 – 1.31 (m, 2H), 0.82 (q, J = 4.4 Hz, 2H). Example 314: 5-[5-(3-aminocyclobutoxy)-2-methyl-4-pyridyl]-N-(2,6-dimethy lpyrimidin-4- yl)pyrazolo[1,5-a]pyridin-2-amine. 5 mg, 79%) was prepared as described in Example 136 except N- (2,6-dimethylpyrimidin-4-yl)-5-(5-fluoro-2-methylpyridin-4-y l)pyrazolo[1,5-a]pyridin-2-amine 327

(Intermediate 15, 250 mg, 0.72 mmol) was used instead of N-(5-(5-fluoro-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide and cis-3-aminocyclobutanol hydrochloride (133 mg, 1.08 mmol) was used instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C ₂₃ H ₂₅ N ₇ O, 415.2; m/z found, 416.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Chloroform-d) δ 8.55 (s, 1H), 8.47 (dt, J = 7.2, 0.9 Hz, 1H), 8.12 (s, 1H), 7.65 (dd, J = 2.0, 0.9 Hz, 1H), 7.18 (s, 1H), 7.03 (s, 1H), 6.96 (dd, J = 7.2, 1.9 Hz, 1H), 6.63 (s, 1H), 4.40 (p, J = 7.0 Hz, 1H), 3.47 (s, 2H), 3.24 – 3.15 (m, 1H), 2.93 – 2.86 (m, 2H), 2.62 (s, 3H), 2.55 (s, 3H), 2.44 (s, 3H), 1.90 – 1.83 (m, 2H). Example 315: 4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- methyl-3-pyridyl]oxy]-2,2-dimethyl-butanenitrile. mg, 4%) was prepared as described in Example 136 except N- (2,6-dimethylpyrimidin-4-yl)-5-(5-fluoro-2-methylpyridin-4-y l)pyrazolo[1,5-a]pyridin-2-amine (Intermediate 15, 250 mg, 0.72 mmol) was used instead of N-(5-(5-fluoro-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide and 4-hydroxy-2,2- dimethylbutanenitrile (122 mg, 1.08 mmol) was used instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C ₂₅ H ₂₇ N ₇ O, 441.2; m/z found, 442.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Chloroform-d) δ 8.41 – 8.38 (m, 1H), 8.29 (s, 1H), 7.69 – 7.58 (m, 2H), 7.17 (d, J = 6.8 Hz, 1H), 7.07 (s, 1H), 6.91 (dd, J = 7.2, 1.9 Hz, 1H), 6.59 (s, 1H), 4.32 – 4.20 (m, 2H), 2.59 (dd, J = 20.7, 2.1 Hz, 6H), 2.47 – 2.43 (m, 3H), 2.02 (t, J = 6.4 Hz, 2H), 1.37 (s, 5H), 1.30 (s, 1H). 328

Example 316: 3-[[4-[2-[(1-cyclopropyl-5-methyl-6-oxo-pyridazin-3-yl)amino ]pyrazolo[1,5- a]pyridin-5-yl]-6-methyl-3-pyridyl]oxy]-2,2-dimethyl-propane nitrile. opropyl-4-methylpyridazin-3(2H)-one. To a vial was added 6- chloro-4-methylpyridazin-3(2h)-one (1 g, 6.92 mmol), cesium carbonate (5.64 g, 17.3 mmol), DMF (34.6 mL, 6.92 mmol), and iodocyclopropane (1.57 g, 9.34 mmol). The reaction mixture was stirred at 140 °C for 16 hr and worked-up in a separatory funnel with EtOAc/water/ brine. The extracted organics were dried with Na ₂ SO ₄ and purified via FCC (0-50% EtOAc / hexanes) to afford the title product as a yellow oil (320 mg, 25%). Step B: 2-cyclopropyl-6-((5-(5-fluoro-2-methylpyridin-4-yl)pyrazolo[ 1,5-a]pyridin-2- yl)amino)-4-methylpyridazin-3(2H)-one. The title compound (700 mg, 87%) was prepared as described in Example 224 except 5-(5-Fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2- amine (Intermediate 8, 501 mg, 2.07 mmol) was used instead of (1r,4r)-4-((4-(2- aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)c yclohexan-1-ol and 6-chloro-2- cyclopropyl-4-methylpyridazin-3(2H)-one (420 mg, 2.28 mmol) was used instead of 4-chloro-2- ethyl-6-methylpyrimidine. Step C: 3-[[4-[2-[(1-cyclopropyl-5-methyl-6-oxo-pyridazin-3-yl)amino ]pyrazolo[1,5- a]pyridin-5-yl]-6-methyl-3-pyridyl]oxy]-2,2-dimethyl-propane nitrile. The title compound (210 mg, 70%) was prepared as described in Example 136 except 2-cyclopropyl-6-((5-(5-fluoro-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-4-meth ylpyridazin-3(2H)-one (250 mg, 0.64 mmol) was used instead of N-(5-(5-fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2 - yl)cyclopropanecarboxamide and 3-hydroxy-2,2-dimethylpropanenitrile (95 mg, 0.96 mmol) was used instead of endo-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride. MS (ESI): mass calcd. for C ₂₆ H ₂₇ N ₇ O ₂ , 469.2; m/z found, 470.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Chloroform- 329 d) δ 8.52 – 8.45 (m, 1H), 8.33 (d, J = 7.2 Hz, 1H), 8.24 (s, 1H), 7.76 (d, J = 2.2 Hz, 1H), 7.26 (s, 1H), 7.08 (q, J = 1.3 Hz, 1H), 7.01 (dd, J = 7.2, 2.0 Hz, 1H), 6.77 (d, J = 0.8 Hz, 1H), 4.02 (s, 2H), 3.04 (d, J = 15.3 Hz, 1H), 2.58 (s, 3H), 2.25 – 2.21 (m, 3H), 1.42 (s, 6H), 1.29 – 1.22 (m, 2H), 1.06 – 0.96 (m, 2H). Example 317: 2-cyclopropyl-6-[[5-[5-[[(2R,3S)-3-hydroxytetrahydrofuran-2- yl]methoxy]-2- methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-4-methyl -pyridazin-3-one. mg, 78%) was prepared as described in Example 316 except in Step C, (2R,3S)-2-(hydroxymethyl)tetrahydrofuran-3-ol (61 mg, 0.51 mmol) was used instead of 3-hydroxy-2,2-dimethylpropanenitrile. MS (ESI): mass calcd. for C ₂₆ H ₂₈ N ₆ O ₄ , 488.2; m/z found, 489.3 [M+H] ⁺ . ¹ H NMR (500 MHz, Chloroform-d) δ 8.27 – 8.18 (m, 2H), 7.86 (s, 1H), 7.69 (dd, J = 1.9, 0.9 Hz, 1H), 7.16 (s, 1H), 6.94 – 6.86 (m, 2H), 6.62 (d, J = 0.8 Hz, 1H), 4.41 – 4.35 (m, 1H), 4.23 – 4.10 (m, 4H), 4.02 (dd, J = 8.4, 5.4 Hz, 2H), 3.81 (s, 1H), 2.53 (s, 3H), 2.15 – 2.04 (m, 4H), 1.96 – 1.88 (m, 1H), 1.23 – 1.14 (m, 2H), 1.02 – 0.90 (m, 2H). Example 318: 2-cyclopropyl-6-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-4-methyl-pyridazi n-3-one. N _N HN 0

The title compound (63 mg, 51%) was prepared as described in Example 316 except in Step C, trans-1,4-cyclohexanediol (60 mg, 0.51 mmol) was used instead of 3-hydroxy-2,2- dimethylpropanenitrile. MS (ESI): mass calcd. for C ₂₇ H ₃₀ N ₆ O ₃ , 486.2; m/z found, 487.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Chloroform-d) δ 8.30 – 8.23 (m, 2H), 7.63 (dd, J = 1.9, 0.9 Hz, 1H), 7.49 (s, 1H), 7.19 (s, 1H), 7.03 (q, J = 1.2 Hz, 1H), 6.96 (dd, J = 7.2, 1.9 Hz, 1H), 6.65 (d, J = 0.9 Hz, 1H), 4.30 – 4.24 (m, 1H), 4.23 – 4.18 (m, 1H), 3.75 (q, J = 8.8, 6.1 Hz, 1H), 2.55 (s, 3H), 2.24 (d, J = 1.3 Hz, 3H), 2.15 – 2.10 (m, 1H), 2.11 – 2.02 (m, 1H), 2.06 (s, 2H), 1.96 – 1.86 (m, 1H), 1.59 – 1.48 (m, 2H), 1.43 – 1.34 (m, 2H), 1.22 (qt, J = 4.6, 2.5 Hz, 2H), 1.06 – 0.95 (m, 2H). Example 319: N-[5-[2-methyl-5-[[(1S,5R)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]- 4-pyridyl]pyrazolo[1,5-c]pyrimidin-2-yl]cyclopropanecarboxam ide. razolo[1,5-c]pyrimidin-2-yl)cyclopropanecarboxamide. To a solution of 5-chloropyrazolo[1,5-c]pyrimidin-2-amine and dichloromethane (5.699 mL, 1.326 g/mL, 88.976 mmol) and triethylamine (0.371 mL, 0.728 g/mL, 2.669 mmol) was added cyclopropanecarbonyl chloride (204.625 mg, 1.957 mmol). The reaction was stirred at room temperature for 3h. LCMS showed the reaction was converted. The crude material was concentrated down under vacuo in the presence of the silica gel. The crude was FCC using 10- 100% EtOAc:Hex. The pure fraction was collected and concentrated down to afford the said compound (174 mg, 84%). ¹ H NMR (600 MHz, Chloroform-d) δ 8.87 (t, J = 1.1 Hz, 1H), 8.19 (s, 1H), 7.35 (d, J = 1.3 Hz, 1H), 6.99 (s, 1H), 1.58 (m, 1h), 1.18 – 1.12 (m, 2H), 1.00 – 0.90 (m, 2H). Step B. N-(5-(5-fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-c]pyrimidin -2- yl)cyclopropanecarboxamide. A mixture consisting of N-(5-chloropyrazolo[1,5-c]pyrimidin-2- 331

yl)cyclopropanecarboxamide (174 mg, 0.735 mmol), 5-fluoro-2-methyl-4-(4,4,5,5-tetramethyl- 1,3,2-dioxaborolan-2-yl)pyridine (0.209 g, 0.882 mmol), Ruphos-Pd-G2 (0.0571 g, 0.0735 mmol), 1,4-dioxane (5.644 mL, 1.033 g/mL, 66.171 mmol), and aq. K ₃ PO ₄ (1.47 mL, 0.5 M, 0.735 mmol) was stirred at 90 °C for 1 h. LCMS showed the reaction was complete. The crude reaction mixture was diluted with EtOAc and H2O. The organic layer was separated and washed with H ₂ O 2x. The organic layer was collected, dried over anhydrous MgSO ₄ , filtered, and concentrated down in the presence of silica gel and under vacuo. The crude was purified by silica gel chromatography using 20-100% EtOAc:Hex. The pure fractions were concentrated down to afford the title compound (168 mg, 73%). MS (ESI): mass calcd. for C16H14FN5O, 311.12; m/z found, 312.1 [M+H]+.1H NMR (600 MHz, DMSO-d6) δ 11.36 (s, 1H), 9.50 (t, J = 1.2 Hz, 1H), 8.56 (d, J = 3.0 Hz, 1H), 8.16 (d, J = 1.4 Hz, 1H), 7.93 (d, J = 6.5 Hz, 1H), 7.10 (s, 1H), 2.55 (s, 3H), 1.96 (s, 1H), 0.88 – 0.81 (m, 4H). Step C. N-(5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy )-2-methylpyridin- 4-yl)pyrazolo[1,5-c]pyrimidin-2-yl)cyclopropanecarboxamide. To a 25 mL round bottom flask was added endo-tert-butyl (1R,5S,7s)-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane-9-carbo xylate (117.229 mg, 0.482 mmol) and DMF (0.622 mL, 0.944 g/mL, 8.03 mmol) and then NaH (60% dispersion in mineral oil) (32.118 mg, 0.803 mmol). The mixture was stirred for 10 min before syringe into a flask containing N-(5-(5-fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-c]pyrimidin -2- yl)cyclopropanecarboxamide (50 mg, 0.161 mmol) and DMF (0.622 mL, 0.944 g/mL, 8.03 mmol). The reaction was stirred at 80 C in heating block overnight. The crude reaction mixture was quenched with H ₂ O. It was then diluted with EtOAc and washed with H ₂ O 4x. The organics were collected, dried over anh. MgSO4, filtered, and concentrated down under vacuo. The crude was purified via 50-100% EtOAc:Hex and then 0-10% 10% 2M NH3-MeOH/DCM:EtOAc. To the purified material was added 1:4 TFA:DCM and stirred for 1h. The crude was concentrated down to a white solid. This material was used in the next step without further purifications. Step D. N-(5-(2-methyl-5-(((1R,5S,7s)-9-methyl-3-oxa-9-azabicyclo[3. 3.1]nonan-7- yl)oxy)pyridin-4-yl)pyrazolo[1,5-c]pyrimidin-2-yl)cyclopropa necarboxamide. To a mixture of N-(5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy )-2-methylpyridin-4- yl)pyrazolo[1,5-c]pyrimidin-2-yl)cyclopropanecarboxamide (39.089 mg, 0.09 mmol) and MeOH (0.364 mL, 0.791 g/mL, 8.996 mmol) was added H(CHO)n (0.00648 g, 0.072 mmol) and 332

NaCNBH3 (0.017 g, 0.27 mmol) in the same time. The mixture was stirred overnight. The reaction was complete by LCMS. The crude material was dissolved with MeOH and purified via ISCO prep. HPLC using 10-60% ACN-H ₂ O with 20 mM of aq. NH ₄ OH as modifier. The fractions contained desired material was collected, froze, and lyophilized to afford a white powder (39.4 mg, 56%). MS (ESI): mass calcd. for C24H28N6O3, 448.2; m/z found, 449.3 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 9.19 (t, J = 1.2 Hz, 1H), 8.97 (d, J = 1.5 Hz, 1H), 8.15 (s, 1H), 8.00 (s, 1H), 6.95 (s, 1H), 4.00 (d, J = 10.9 Hz, 2H), 3.75 (d, J = 11.2 Hz, 2H), 2.75 (d, J = 6.3 Hz, 2H), 2.63 – 2.47 (m, 8H), 1.88 (d, J = 15.5 Hz, 3H), 1.02 (p, J = 4.0 Hz, 2H), 0.92 (dq, J = 7.4, 3.8 Hz, 2H). Example 320: 6-[2-methyl-5-[[(1S,5R)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl] oxy]-4-pyridyl]-N- (5-methylpyrazin-2-yl)imidazo[1,2-a]pyrazin-2-amine. 2-methylpyridin-4-yl)imidazo[1,2-a]pyrazin-2-amine. A mixture consisting of 6-bromoimidazo[1,2-a]pyrazin-2-amine (1000 mg, 4.694 mmol), Ruphos-Pd-G2 (0.365 g, 0.469 mmol), and 5-fluoro-2-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan- 2- yl)pyridine (1.335 g, 5.633 mmol) was added 1,4-dioxane (36.033 mL, 1.033 g/mL, 422.463 mmol) and aq. K3PO4 (9.388 mL, 0.5 M, 4.694 mmol) was stirred at 90 °C for 3 h. The crude was diluted with 20% iPrOH-DCM and the H ₂ O. The layers were separated. The organics were kept and concentrated under vacuo to a solid. The solid was dissolve with 50 mL of iPrOH/DCM and concentrated down under vacuo in the presence of silica gel. The crude was flashed with 0- 10% 2M NH ₃ in MeOH-DCM. The pure fractions were concentrated down under vacuo to afford the title compound (640 mg, 56%). MS (ESI): mass calcd. for C ₁₂ H ₁₀ FN ₅ , 243.2; m/z found, 244.1 [M+H] ⁺ ; ¹ H NMR (500 MHz, Methanol-d4) δ 8.91 (d, J = 1.4 Hz, 1H), 8.70 (t, J = 1.0 Hz, 333

1H), 8.42 (d, J = 3.4 Hz, 1H), 8.04 (d, J = 6.5 Hz, 1H), 7.36 (d, J = 0.7 Hz, 1H), 2.60 (d, J = 1.0 Hz, 3H). Step B.6-(5-fluoro-2-methylpyridin-4-yl)-N-(5-methylpyrazin-2-yl) imidazo[1,2- a]pyrazin-2-amine. To a mixture of 6-(2-fluoro-5-methylphenyl)imidazo[1,2-a]pyrazin-2-amine from Step A (100 mg, 0.411 mmol), 2-chloro-5-methylpyrazine (58.138 mg, 0.452 mmol), Cs ₂ CO ₃ (0.403 g, 1.238 mmol), TBuBrettPhos Pd G3 (17.563 mg, 0.0206 mmol) was added 1,4- dioxane (0.822 mL, 0.5 M, 0.411 mmol). The mixture was vacuum and back-filled with N ₂ 4x. Then, the mixture was heated to 90 °C for 1h. LCMS showed the reaction was mostly complete. The crude was diluted with DCM and washed with H2O 2x. The organics were collected, dried over anh. MgSO ₄ , and concentrated down under vacuo. The material was flashed with 0-10% 2M NH3 in MeOH/DCM-DCM. The pure fractions were collected then concentrated down to yield the title compound (87mg, 63%). MS (ESI): mass calcd. for C17H14FN7, 335.34; m/z found, 336.1 [M+H] ⁺ ; ¹ Η ΝΜΡ (500 MHz, DMSO-d6) δ 10.43 (s, 1H), 9.28 (d, J = 1.4 Hz, 1H), 8.99 (dd, J = 1.4, 0.7 Hz, 1H), 8.59 – 8.51 (m, 2H), 8.42 (d, J = 1.5 Hz, 1H), 8.15 (dd, J = 1.5, 0.8 Hz, 1H), 7.98 (d, J = 6.5 Hz, 1H), 5.75 (s, 1h), 2.56 – 2.53 (m, 3H), 2.40 (d, J = 0.7 Hz, 3H). Step C.6-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy) -2-methylpyridin-4- yl)-N-(5-methylpyrazin-2-yl)imidazo[1,2-a]pyrazin-2-amine. To a microwave vial was added 6- (5-fluoro-2-methylpyridin-4-yl)-N-(5-methylpyrazin-2-yl)imid azo[1,2-a]pyrazin-2-amine (40 mg, 0.119 mmol), endo-tert-butyl (1R,5S,7s)-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane-9- carboxylate (87.064 mg, 0.358 mmol), sodium tertbutoxide (34 mg, 0.358 mmol) and DMA (0.552 mL, 0.941 g/mL, 5.964 mmol). The reaction was heated to 120 °C for 1h in microwave. LCMS showed ~60% desired product. The reaction was heated to 120 °C for 1h more. LCMS looked very similar. The reaction was heated to 130 °C for 12 h more. The crude reaction mixture was diluted with 10% MeOH/DCM. The crude was flashed with 0-10% MeOH-DCM. The SM coeluted with the product. The mixed fractions were collected and concentrated down under vacuo. The crude was dissolved with DMSO and a little HCl. The crude was purified via preparative HPLC using 0-80% ACN-H2O with 20 mM of aq. NH4OH as modifier. The pure fractions were collected and lyophilize down to afford a white powder (11 mg, 21%). MS (ESI): mass calcd. for C24H26N8O2, 458.2; m/z found, 459.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol- d4) δ 9.53 (s, 1H), 8.77 (t, J = 1.0 Hz, 1H), 8.27 (d, J = 0.7 Hz, 1H), 8.22 (d, J = 1.5 Hz, 1H), 334

8.12 (s, 1H), 8.10 (d, J = 1.2 Hz, 1H), 7.87 (s, 1H), 4.88 (s, 1H), 3.97 – 3.87 (m, 4H), 3.37 (s, 3H), 2.46 (s, 5H), 2.36 (s, 3H), 2.26 (d, J = 16.2 Hz, 2H). Example 321: 6-[2-methyl-5-[[(1S,5R)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl] oxy]-4-pyridyl]-N- (6-methylpyrazin-2-yl)imidazo[1,2-a]pyrazin-2-amine. s prepared in the similar manner of Example 320 except 2-chloro- 6-methylpyrazine was used instead of 2-chloro-5-methylpyrazine in Step B (107.5, 39.5%). MS (ESI): mass calcd. for C ₂₄ H ₂₆ N ₈ O ₂ , 458.2; m/z found, 459.2 [M+H] ⁺ . ¹ H NMR (400 MHz, Methanol-d4) δ 9.95 (d, J = 1.4 Hz, 1H), 8.77 (d, J = 1.2 Hz, 1H), 8.42 (d, J = 0.7 Hz, 1H), 8.09 (d, J = 2.9 Hz, 2H), 7.94 (s, 1H), 7.80 (s, 1H), 4.87 (s, 1H), 3.95 (d, J = 10.7 Hz, 2H), 3.88 (d, J = 11.4 Hz, 2H), 2.95 (d, J = 5.9 Hz, 2H), 2.46 (d, J = 4.6 Hz, 6H), 2.39 (dd, J = 15.1, 6.7 Hz, 2H), 2.06 (d, J = 15.6 Hz, 2H). Example 322: 6-[2-methyl-5-[[(1S,5R)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl] oxy]-4-pyridyl]-N- (1-methylpyrazol-4-yl)imidazo[1,2-a]pyrazin-2-amine. as prepared in the similar manner of Example 320 except 4-bromo- 1-methyl-1H-pyrazole was used instead of 6-(5-fluoro-2-methylpyridin-4-yl)-N-(5- methylpyrazin-2-yl)imidazo[1,2-a]pyrazin-2-amine in step C (54 mg, 13%). MS (ESI): mass 335

calcd. for C23H26N8O2, 446.2; m/z found, 447.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.52 (d, J = 1.4 Hz, 1H), 8.71 (d, J = 1.2 Hz, 1H), 8.56 (s, 1H), 8.21 (s, 1H), 7.85 (s, 1H), 7.73 (s, 1H), 7.34 (s, 1H), 7.26 (s, 1H), 4.81 (tt, J = 6.3, 3.7 Hz, 1H), 3.75 (s, 3H), 3.69 – 3.54 (m, 4H), 2.86 (d, J = 7.0 Hz, 2H), 2.39 (s, 3H), 2.26 (dt, J = 14.0, 6.8 Hz, 2H), 1.82 (dt, J = 14.8, 2.8 Hz, 2H). Example 323: N-cyclopropyl-4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]benzenesulfonamide . s prepared as described in Example 239 where N-Cyclopropyl 4- bromobenzenesulfonamide was used instead of 6-bromo-1H-pyrrolo[2,3-b]pyridine(39.6 mg, 24%). MS (ESI): mass calcd. for C ₂₈ H ₃₁ N ₅ O ₄ S, 533.2; m/z found, [M+H] ⁺ . ¹ H NMR (600 MHz, DMSO-d6) δ 9.58 (s, 1H), 8.59 (dt, J = 7.1, 0.9 Hz, 1H), 8.36 (s, 1H), 7.74 – 7.64 (m, 4H), 7.61 (s, 1H), 6.96 (dd, J = 7.2, 2.0 Hz, 1H), 6.24 (d, J = 0.9 Hz, 1H), 4.51 (d, J = 3.9 Hz, 1H), 4.41 (dt, J = 8.8, 4.7 Hz, 1H), 3.50 (s, 1H), 2.13 – 2.06 (m, 1H), 2.00 – 1.94 (m, 2H), 1.77 – 1.70 (m, 2H), 1.46 – 1.37 (m, 2H), 1.33 – 1.22 (m, 2H), 0.47 (td, J = 7.0, 4.7 Hz, 2H), 0.40 – 0.35 (m, 2H). Example 324: 4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]pyrazolo[ 1,5-a]pyridin-2- yl]amino]-N,N-dimethyl-benzenesulfonamide. 336

repared as described in Example 239 where 4-bromo-N,N- dimethylbenzenesulfonamide was used instead of 6-bromo-1H-pyrrolo[2,3-b]pyridine (37 mg, 21%). MS (ESI): mass calcd. for C ₂₇ H ₃₁ N ₅ O ₄ S, 521.2; m/z found, 522.3 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 9.66 (s, 1H), 8.59 (d, J = 7.2 Hz, 1H), 8.36 (s, 1H), 7.75 – 7.66 (m, 3H), 7.63 (d, J = 8.8 Hz, 2H), 7.34 (s, 1H), 6.96 (dd, J = 7.2, 2.0 Hz, 1H), 6.25 (s, 1H), 4.51 (d, J = 3.8 Hz, 1H), 4.41 (dt, J = 9.1, 4.9 Hz, 1H), 2.58 (s, 6H), 2.46 (s, 3H), 1.98 (d, J = 12.6 Hz, 2H), 1.73 (t, J = 8.4 Hz, 2H), 1.47 – 1.36 (m, 2H), 1.28 (q, J = 12.6, 11.4 Hz, 2H). Example 325: (rac)--4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[ 1,5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxymethyl]-1,5,5-trimethyl-pyrrolidin-2-o ne. s prepared by the similar method of Example 1 using 4- (hydroxymethyl)-1,5,5-trimethylpyrrolidin-2-one instead of (R)-(1-methylpyrrolidin-3- yl)methanol and Intermediate 15 instead of N-(5-(5-chloro-2-cyanopyridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide (15 mg, 36%). MS (ESI): mass calcd. for C27H31N7O2, 485.3; m/z found, 486.3 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.12 (s, 1H), 8.55 – 8.45 (m, 1H), 8.32 (s, 1H), 7.70 (dd, J = 2.0, 0.9 Hz, 1H), 7.27 (s, 1H), 6.96 (s, 1H), 6.89 (dd, J = 7.2, 2.0 Hz, 1H), 6.80 – 6.73 (m, 1H), 4.21 (dd, J = 9.7, 7.2 Hz, 1H), 4.10 (dd, J = 9.7, 6.6 Hz, 1H), 337

2.48 (s, 3H), 2.41 – 2.38 (m, 7H), 2.26 – 2.21 (m, 4H), 2.13 (dd, J = 16.5, 10.4 Hz, 1H), 1.09 (s, 3H), 0.94 (s, 3H). Example 326: N-cyclopropyl-4-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl -4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-2,6-dimethyl-benz amide. pared as described in Example 239 where 4-bromo-N- cyclopropyl-2,6-dimethylbenzamide was used instead of 6-bromo-1H-pyrrolo[2,3-b]pyridine (67 mg, 36%). MS (ESI): mass calcd. for C29H33N5O3, 499.3; m/z found, [M+H] ⁺ . ¹ H NMR (600 MHz, DMSO-d6) δ 8.88 (s, 1H), 8.54 (dt, J = 7.1, 0.9 Hz, 1H), 8.30 (s, 1H), 8.18 (d, J = 4.4 Hz, 1H), 7.74 (dd, J = 2.0, 0.9 Hz, 1H), 7.34 (s, 1H), 7.15 (s, 2H), 6.95 (dd, J = 7.2, 2.0 Hz, 1H), 6.10 (d, J = 0.8 Hz, 1H), 4.62 (s, 1H), 3.86 (s, 2H), 2.86 – 2.74 (m, 1H), 2.46 (s, 3H), 2.17 (s, 6H), 1.15 (s, 6H), 0.70 – 0.63 (m, 2H), 0.51 – 0.45 (m, 2H). Example 327: 1-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- (fluoromethyl)-3-pyridyl]oxy]-2-methyl-propan-2-ol. s prepared by the similar method of Example 1 using 2- methylpropane-1,2-diol instead of (R)-(1-methylpyrrolidin-3-yl)methanol and N-(2,6- dimethylpyrimidin-4-yl)-5-(5-fluoro-2-(fluoromethyl)pyridin- 4-yl)pyrazolo[1,5-a]pyridin-2- amine (made in similar method as Intermediate 15) instead of N-(5-(5-chloro-2-cyanopyridin-4- 338

yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (8 mg, 13.4%). MS (ESI): mass calcd. for C23H25FN6O2, 436.2; m/z found, 437.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.21 (s, 1H), 8.61 (dt, J = 7.2, 0.9 Hz, 1H), 8.50 (s, 1H), 7.92 (dd, J = 2.1, 0.9 Hz, 1H), 7.65 (s, 1H), 7.10 (dd, J = 7.2, 2.0 Hz, 1H), 7.03 (s, 1H), 6.85 (s, 1H), 5.45 (d, J = 47.6 Hz, 2H), 4.67 (s, 1H), 3.97 (s, 2H), 2.46 (s, 3H), 2.30 (s, 3H), 1.17 (s, 6H). Example 328: 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- ethyl-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. repared by the similar method of Example 1 using 3-hydroxy- 2,2-dimethylpropanenitrile instead of (R)-(1-methylpyrrolidin-3-yl)methanol and N-(2,6- dimethylpyrimidin-4-yl)-5-(2-ethyl-5-fluoropyridin-4-yl)pyra zolo[1,5-a]pyridin-2-amine (made in similar method as Intermediate 15) instead of N-(5-(5-chloro-2-cyanopyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. (17 mg, 9.3%). MS (ESI): mass calcd. for C ₂₅ H ₂₇ N ₇ O, 441.2; m/z found, 442.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.20 (s, 1H), 8.59 (dd, J = 7.2, 0.9 Hz, 1H), 8.39 (s, 1H), 7.88 (dd, J = 2.0, 0.9 Hz, 1H), 7.40 (s, 1H), 7.08 – 7.01 (m, 2H), 6.85 (s, 1H), 4.20 (s, 2H), 2.77 (q, J = 7.6 Hz, 2H), 2.45 (s, 3H), 2.30 (s, 3H), 1.36 (s, 6H), 1.25 (t, J = 7.6 Hz, 3H). Example 329: 3-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)am ino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. 9

Step A: 3-((4-iodo-6-methoxypyridin-3-yl)oxy)-2,2-dimethylpropanenit rile. To a mixture of 4-iodo-6-methoxypyridin-3-ol (20 g, 79.7 mmol, 1.00 equiv), 2-cyano-2-methylpropyl-4- methylbenzenesulfonate (24.2 g, 95.6 mmol, 1.20 equiv), Cs ₂ CO ₃ (62.3 g, 191 mmol, 2.40 equiv) in DMA (640 mL, 0.125M) was heated at 90 °C for 14 hours. The reaction mixture was cooled to 23 °C and water (400 mL) was added followed by EtOAc (400 mL). The layers were separated and the aqueous was extracted with EtOAc (2 x 400 mL). The combined organics were washed with brine (2 x 300 mL) and then dried with MgSO4, filtered and concentrated in vacuo. The resulting oil was then purified by silica gel chromatography (0-50% EtOAc in hexanes) to give 3-((4-iodo-6-methoxypyridin-3-yl)oxy)-2,2-dimethylpropanenit rile (18 g, 54.2 mmol, 68% yield) as a pale yellow oil. Step B: 3-((6-hydroxy-4-iodopyridin-3-yl)oxy)-2,2-dimethylpropanenit rile. To a suspension of 3-((4-iodo-6-methoxypyridin-3-yl)oxy)-2,2-dimethylpropanenit rile (18 g, 54.2 mmol, 1.00 equiv) and sodium iodide (32.5 g, 216 mmol, 4.00 equiv) in MeCN (540 mL, 0.10M) was added TMSCl (34.4 mL, 271 mmol, 5.00 equiv). The resulting mixture was heated at reflux for 3 hours and then the mixture cooled to 23 °C. To the mixture was added EtOAc (500 mL) and then washed with saturated aqueous NH ₄ Cl (2 x 250 mL) followed by water (250 mL). The organics were concentrated in vacuo and then purified by silica gel chromatography (10% 2N NH4OH/MeOH in DCM) to give 3-((6-hydroxy-4-iodopyridin-3-yl)oxy)-2,2- dimethylpropanenitrile (14.4 g, 45.3 mmol, 83% yield) as a beige solid. Step C: 3-((6-(difluoromethoxy)-4-iodopyridin-3-yl)oxy)-2,2-dimethyl propanenitrile. To solution of 3-((6-hydroxy-4-iodopyridin-3-yl)oxy)-2,2-dimethylpropanenit rile (14.4 g, 45.3 mmol, 1.00 equiv), diethyl-(bromodifluoromethyl)phosphonate (8.9 mL, 50.4 mmol, 1.1 equiv) in MeCN (250 mL, 0.18 M) was added potassium fluoride (5.20 g, 90 mmol, 2.00 equiv) and the resulting mixture was heated at 60 °C for 16 hours. The mixture was then cooled to 23 °C and diluted with EtOAc (500 mL) and then washed with brine (3 x 300 mL). The organics were then concentrated in vacuo and purified by silica gel chromatography (10-40% EtOAc in hexanes) to give 3-((6-(difluoromethoxy)-4-iodopyridin-3-yl)oxy)-2,2-dimethyl propanenitrile (15.5 g, 42 mmol, 93% yield) as a clear colorless oil. Step D: 3-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)am ino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. To a solution of 3-((6- (difluoromethoxy)-4-iodopyridin-3-yl)oxy)-2,2-dimethylpropan enitrile (15.5 g, 42 mmol, 1.00 340

equiv), Intermediate 22 (16.9 g, 46.3 mmol, 1.10 equiv), Pd(dppf)Cl2 (3.48 g, 4.20 mmol, 0.10 equiv), aq. K3PO4 (0.5 M, 168 mL, 1.00 equiv) and 1,4-dioxane (168 mL, 0.25 M) was purged with N ₂ (evacuated and back-filled with N ₂ x 3). The resulting mixture was heated at 60 °C for 3 hours. The mixture was then cooled to 23 °C and diluted with EtOAc:water (1:1, 1000 mL) which resulting a black mass which was then dissolved in hot DCM and then was added silica gel. The organics were removed in vacuo and the crude material was purified by silica gel chromatography (5% MeOH in DCM) to give the title compound (15.5 g, 32.3 mmol, 77% yield) as an off-white solid. MS (ESI): mass calcd. for C24H23F2N7O2, 479.2; m/z found, 480.1 [M+H] ⁺ . 1H NMR (400 MHz, DMSO-d6) d 10.23 (s, 1H), 8.62 (dt, J = 7.3, 0.9 Hz, 1H), 8.15 (s, 1H), 7.93 (dd, J = 2.0, 0.9 Hz, 1H), 7.68 (t, J = 73.1 Hz, 1H), 7.28 (s, 1H), 7.10 – 6.98 (m, 2H), 6.88 (s, 1H), 4.22 (s, 2H), 2.46 (s, 3H), 2.31 (s, 3H), 1.36 (s, 6H). ¹⁹ F NMR (400 MHz, DMSO-d6), - 86.44 ppm. Example 330: 4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]pyrazolo[ 1,5-a]pyridin-2- yl]amino]-N-isopropyl-2,6-dimethoxy-benzamide. 5mL, 0.451 mmol) was added dropwise to a stirred mixture of Intermediate 23 (80 mg, 0.15 mmol), isopropylamine (44 mg, 0.75 mmol) in THF (6.9 mL), The mixture was stirred at RT for 1h. The reaction was quenched with sat. aq. NH ₄ Cl (2 mL) and extracted with EtOAc (3 x 10 mL). The combined organics were dried with Na2SO4, filtered and concentrated to a residue. The residue was then purified by PTLC with 0-5% MeOH in DCM to afford the title compound (28 mg, 33%). MS (ESI): mass calcd. for C ₃₁ H ₃₇ N ₅ O ₅ , 559.3; m/z found, [M+H] ⁺ . ¹ H NMR (400 MHz, Methanol-d4) δ 8.29 (d, J = 7.2 Hz, 1H), 8.13 (s, 1H), 7.53 (d, J = 2.0 Hz, 1H), 7.25 (s, 1H), 6.83 (dd, J = 7.3, 1.9 Hz, 1H), 6.74 (s, 2H), 6.07 (s, 1H), 4.36 – 4.17 (m, 1H), 4.10 – 3.97 (m, 1H), 3.73 (s, 6H), 3.57 – 3.42 (m, 1H), 2.42 (s, 3H), 2.04 – 341

1.90 (m, 2H), 1.77 (t, J = 8.7 Hz, 2H), 1.47 – 1.35 (m, 2H), 1.35 – 1.21 (m, 2H), 1.11 (d, J = 6.6 Hz, 6H). Example 331: 4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]pyrazolo[ 1,5-a]pyridin-2- yl]amino]-2,6-dimethoxy-N-methyl-benzamide. prepared by the similar method of Example 330 using methylamine instead of isopropylamine (40 mg, 36%). MS (ESI): mass calcd. for C ₂₉ H ₃₃ N ₅ O ₅ , 531.2; m/z found, 532.1 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.47 – 8.35 (m, 1H), 8.25 (s, 1H), 7.66 (dd, J = 2.1, 0.9 Hz, 1H), 7.38 (s, 1H), 6.96 (dd, J = 7.2, 1.9 Hz, 1H), 6.87 (s, 2H), 6.20 (s, 1H), 4.45 – 4.36 (m, 1H), 3.85 (s, 6H), 3.71 – 3.62 (m, 1H), 2.88 (s, 3H), 2.54 (s, 3H), 2.14 – 2.05 (m, 2H), 1.93 – 1.86 (m, 2H), 1.59 – 1.50 (m, 2H), 1.46 – 1.35 (m, 2H). Example 332: 4-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]pyrazolo[ 1,5-a]pyridin-2- yl]amino]-2,6-dimethoxy-N,N-dimethyl-benzamide. prepared by the similar method of Example 330 using dimethylamine instead of isopropylamine (31 mg, 46.5%). MS (ESI): mass calcd. for C30H35N5O5, 545.3; m/z found, 546.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.27 (d, J = 342

7.2 Hz, 1H), 8.12 (s, 1H), 7.54 – 7.49 (m, 1H), 7.23 (s, 1H), 6.81 (dd, J = 7.2, 1.9 Hz, 1H), 6.74 (s, 2H), 6.09 – 5.98 (m, 1H), 4.32 – 4.19 (m, 1H), 3.72 (s, 6H), 3.56 – 3.49 (m, 1H), 3.48 – 3.42 (m, 2H), 2.41 (s, 3H), 2.01 – 1.93 (m, 2H), 1.81 – 1.73 (m, 6H), 1.45 – 1.37 (m, 2H), 1.32 – 1.24 (m, 2H). Example 333: N-cyclopropyl-2-(difluoromethoxy)-4-[[5-[5-(4-hydroxycyclohe xoxy)-2-methyl- 4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-6-methoxy-benza mide. ared as described in Example 239 where 4-bromo-N- cyclopropyl-2-(difluoromethoxy)-6-methoxy-benzamide was used instead of 6-bromo-1H- pyrrolo[2,3-b]pyridine (125 mg, 57%). MS (ESI): mass calcd. for C31H33F2N5O5, 593.2; m/z found, [M+H] ⁺ . ¹ H NMR (600 MHz, Methanol-d4) δ 8.44 – 8.32 (m, 1H), 8.23 (s, 1H), 7.69 – 7.58 (m, 1H), 7.34 (s, 1H), 7.14 (d, J = 1.8 Hz, 1H), 7.04 – 6.99 (m, 1H), 6.99 – 6.92 (m, 1H), 6.77 (t, J = 74.4 Hz, 1H), 6.16 (s, 1H), 4.45 – 4.33 (m, 1H), 3.88 (s, 3H), 3.70 – 3.60 (m, 1H), 2.91 – 2.72 (m, 1H), 2.53 (s, 3H), 2.12 – 2.04 (m, 2H), 1.96 – 1.79 (m, 3H), 1.57 – 1.47 (m, 2H), 1.45 – 1.37 (m, 2H), 0.83 – 0.74 (m, 2H), 0.67 – 0.60 (m, 2H). Example 334: N-cyclopropyl-6-[[5-[5-(4-hydroxycyclohexoxy)-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-2,4-dimethyl-pyri dine-3-carboxamide. 343

s prepared as described in Example 239 where 6-chloro-N- cyclopropyl-2,4-dimethylnicotinamide was used instead of 6-bromo-1H-pyrrolo[2,3-b]pyridine (91 mg, 53%). MS (ESI): mass calcd. for C ₃₀ H ₃₄ N ₆ O ₃ , 526.3; m/z found, 527.3 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.50 – 8.35 (m, 1H), 8.25 (s, 1H), 7.71 (dd, J = 1.9, 0.9 Hz, 1H), 7.38 (s, 1H), 7.08 (s, 1H), 6.99 (dd, J = 7.2, 1.9 Hz, 1H), 6.81 (s, 1H), 4.45 – 4.35 (m, 1H), 3.71 – 3.60 (m, 1H), 2.97 – 2.79 (m, 1H), 2.54 (s, 3H), 2.44 (s, 3H), 2.29 (s, 3H), 2.14 – 1.98 (m, 2H), 1.94 – 1.83 (m, 2H), 1.61 – 1.33 (m, 4H), 0.90 – 0.80 (m, 2H), 0.69 – 0.53 (m, 2H). Example 335: N-cyclopropyl-6-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl -4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-2,4-dimethyl-pyri dine-3-carboxamide. pared as described in Example 239 where 6-chloro-N- cyclopropyl-2,4-dimethylnicotinamide was used instead of 6-bromo-1H-pyrrolo[2,3-b]pyridine (75 mg, 39%). MS (ESI): mass calcd. for C28H32N6O3, 500.3; m/z found, 501.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Chloroform-d) δ 8.21 (d, J = 7.1 Hz, 1H), 8.00 (s, 1H), 7.85 (s, 1H), 7.37 (s, 1H), 6.98 (s, 1H), 6.78 – 6.62 (m, 3H), 6.30 (s, 1H), 3.81 (s, 2H), 3.44 (s, 1H), 2.87 – 2.78 (m, 1H), 2.41 (s, 3H), 2.30 (s, 3H), 2.09 (s, 3H), 1.22 (s, 6H), 0.83 – 0.72 (m, 2H), 0.56 (s, 6 H), 0.62 – 0.51 (m, 2H). 344

Example 336: (1S,5R)-7-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo [1,5-a]pyridin-5- yl]-6-methyl-3-pyridyl]oxy]-3-oxa-9-azabicyclo[3.3.1]nonane- 9-carbonitrile. ylpyrimidin-4-yl)-5-[2-methyl-5-[[(1S,5R)-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-amine (Intermediate 24) (50 mg, 0.10 mmol), NaHCO3 (26 mg, 0.31 mmol), and MeOH(5 mL) was added cyanogen bromide (13.1 mg, 0.12 mmol). The solution was stirred at room temperature for 16h. To the mixture was added 1 mL sat. aq. NaHCO ₃ solution. The reaction mixture was extracted with DCM (5 x 2 mL). The organic layer was concentrated down under vacuo. The crude material was purified with PTLC using 5-10% MeOH in DCM as eluent to afford the title compound (31 mg, 60%). MS (ESI): mass calcd. for C ₂₇ H ₂₈ N ₈ O ₂ , 496.2; m/z found, 497.3 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.27 (d, J = 7.3 Hz, 1H), 8.05 (s, 1H), 7.87 (d, J = 1.8 Hz, 1H), 7.25 (s, 1H), 7.01 (dd, J = 7.3, 2.1 Hz, 1H), 6.90 (s, 1H), 6.69 (s, 1H), 4.59 (dd, J = 6.1, 3.0 Hz, 1H), 3.83 – 3.59 (m, 4H), 3.39 (d, J = 6.8 Hz, 2H), 2.49 – 2.37 (m, 8H), 2.26 (s, 3H), 1.97 – 1.88 (m, 2H). Example 337: 2,4-dimethyl-6-[[5-[2-methyl-5-[[(1S,5R)-3-oxa-9-azabicyclo[ 3.3.1]nonan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridazi n-3-one. 345

s prepared by the similar method of Example 1 using (1R,5S,7s)- 3-oxa-9-azabicyclo[3.3.1]nonan-7-ol instead of (R)-(1-methylpyrrolidin-3-yl)methanol and 6- ((5-(5-fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)amino)-2,4-dimethylpyridazin- 3(2H)-one (made in similar method as Intermediate 15) instead of N-(5-(5-chloro-2- cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropaneca rboxamide (37 mg, 13%). MS (ESI): mass calcd. for C26H29N7O3, 487.2; m/z found, [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol- d4) δ 8.25 (d, J = 7.2 Hz, 1H), 8.06 (s, 1H), 7.99 – 7.90 (m, 1H), 7.29 (s, 1H), 7.20 – 7.14 (m, 1H), 7.06 (dd, J = 7.2, 2.0 Hz, 1H), 6.73 (d, J = 0.8 Hz, 1H), 4.61 – 4.56 (m, 1H), 3.70 – 3.59 (m, 8H), 2.92 – 2.78 (m, 3H), 2.42 (s, 3H),2.32 – 2.23 (m, 2H), 2.10 (d, J = 1.1 Hz, 3H), 1.90 – 1.83 (m, 2H). Example 338: N-(3-fluoro-4-methyl-2-pyridyl)-5-[2-methyl-5-[[(1S,5R)-3-ox a-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-amine. s prepared as described in Example 239 where 2-bromo-3-fluoro- 4-picoline was used instead of 6-bromo-1H-pyrrolo[2,3-b]pyridine and 5-(5-(((1R,5S,7s)-3-oxa- 9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2-methylpyridin-4-yl)pyra zolo[1,5-a]pyridin-2-amine was used instead of (1r,4r)-4-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylp yridin-3- 346

yl)oxy)cyclohexan-1-ol (Intermediate 12). The preparation of 5-(5-(((1R,5S,7s)-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl)oxy)-2-methylpyridin-4-yl)pyrazo lo[1,5-a]pyridin-2-amine is similar to Intermediate 12 (12 mg, 10.9%). MS (ESI): mass calcd. for C ₂₆ H ₂₇ FN ₆ O ₂ , 474.2; m/z found, 475.1 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.40 – 8.30 (m, 1H), 8.15 (s, 1H), 8.03 (dd, J = 2.0, 0.9 Hz, 1H), 7.89 (d, J = 5.1 Hz, 1H), 7.39 (s, 1H), 7.14 (dd, J = 7.2, 2.0 Hz, 1H), 7.00 (d, J = 0.8 Hz, 1H), 6.72 (t, J = 5.1 Hz, 1H), 4.70 – 4.55 (m, 1H), 3.81 – 3.66 (m, 4H), 2.96 (d, J = 7.4 Hz, 2H), 2.52 (s, 3H), 2.41 – 2.26 (m, 5H), 1.99 – 1.91 (m, 2H). Example 339: N-[5-[5-[[(1S,5R)-9-acetyl-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-2-methyl- 4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamid e. ,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanec arboxamide. To a 0 °C solution of N-(5-(5-fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2 -yl)cyclopropanecarboxamide (Intermediate 6) (300 mg, 0.967 mmol) and DMA (2 mL) was added NaH (60% dispersion in mineral oil) (116 mg, 2.9 mmol). The reaction mixture was stirred for 1.5 h at room temperature and 90 °C for 1h. The reaction was cooled to room temperature and then quenched with aqueous saturated NH ₄ OH solution. Then the reaction mixture was extracted with DCM and the organics were concentrated down under vacuo. The crude was purified by FCC using MeOH/DCM as solvent. The pure fraction was collected and concentrated down to afford the title compound (200 mg, 47.7%). MS (ESI): mass calcd. for C ₂₄ H ₂₇ N ₅ O ₃ , 433.5; m/z found, 434.2 [M+H] ⁺ .1H NMR (500 MHz, Methanol-d4) δ 8.33 (d, J = 7.3 Hz, 1H), 8.12 (s, 1H), 8.05 (d, J = 1.9 Hz, 1H), 7.31 (s, 1H), 7.14 (dd, J = 7.3, 2.0 Hz, 1H), 6.84 (s, 1H), 4.70 – 4.63 (m, 2H), 3.80 – 3.61 (m, 4H), 2.96 (d, J = 7.1 Hz, 2H), 2.49 (s, 3H), 2.41 – 2.31 (m, 2H), 1.96 – 1.81 (m, 3H), 1.04 – 0.96 (m, 2H), 0.95 – 0.79 (m, 2H). 347

Step B. N-(5-(5-(((1R,5S,7s)-9-acetyl-3-oxa-9-azabicyclo[3.3.1]nonan -7-yl)oxy)-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanec arboxamide. To a 0 °C solution of N-(5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy )-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (100 mg, 0.23 mmol) in DCM/DMF(10 mL/1 mL) and TEA (0.962 mL, 0.692 mmol) was added, acetic acid (16.6 mg, 0.28 mmol) and HATU (114 mg, 0.3 mmol). The solution was stirred for 2h. LCMS showed desired mass peak. The mixture was added 1 mL saturated aqueous NaHCO ₃ solution. The mixture was extracted with DCM (2 x 2mL). The organic layers were combined and concentrated under vacuo. The crude was purified via PTLC with 5-10% MeOH in DCM to afford the title compound (98 mg, 89.3%). MS (ESI): mass calcd. for C ₂₆ H ₂₉ N ₅ O ₄ , 475.5; m/z found, 476.1 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.39 – 8.31 (m, 1H), 8.12 (s, 1H), 8.06 (dd, J = 2.0, 0.9 Hz, 1H), 7.34 (s, 1H), 7.15 (dd, J = 7.3, 2.0 Hz, 1H), 6.85 (s, 1H), 4.57 – 4.48 (m, 2H), 4.04 – 3.94 (m, 1H), 3.81 – 3.71 (m, 2H), 3.69 – 3.55 (m, 2H), 2.50 (s, 3H), 2.42 – 2.33 (m, 1H), 2.29 – 2.22 (m, 1H), 2.12 – 1.93 (m, 5H), 1.89 – 1.82 (m, 1H), 1.02 – 0.96 (m, 2H), 0.93 – 0.85 (m, 2H). Example 340: N-isopropyl-2,6-dimethoxy-4-[[5-[2-methyl-5-[[(1S,5R)-3-oxa- 9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-yl]amino]benzamide. 28%) was prepared as described in Example 239 where 4- bromo-N-isopropyl-2,6-dimethoxybenzamide was used instead of 6-bromo-1H-pyrrolo[2,3- b]pyridine and 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-amine was used instead of (1r,4r)-4-((4-(2-aminopyrazolo[1,5- a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)cyclohexan-1-ol (Intermediate 12). The preparation of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4-yl)pyrazolo[1,5- 348

a]pyridin-2-amine is similar to Intermediate 12. MS (ESI): mass calcd. for C32H38N6O5, 586.3; m/z found, 587.3 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.41 – 8.22 (m, 1H), 8.14 (s, 1H), 7.96 (dd, J = 2.0, 0.9 Hz, 1H), 7.36 (s, 1H), 7.10 – 7.00 (m, 1H), 6.83 (s, 2H), 6.13 (d, J = 0.8 Hz, 1H), 4.70 – 4.61 (m, 1H), 4.19 – 4.05 (m, 1H), 3.87 – 3.61 (m, 10H), 2.95 (d, J = 7.2 Hz, 2H), 2.51 (s, 3H), 2.40 – 2.27 (m, 2H), 1.99 – 1.88 (m, 2H), 1.21 (d, J = 6.6 Hz, 6H). Example 341: N-isopropyl-2-methyl-5-[[5-[2-methyl-5-[[(1S,5R)-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-yl]amino]pyrazole-3- carboxamide. as prepared as described in Example 239 where 3-bromo-N- isopropyl-1-methyl-1H-pyrazole-5-carboxamide was used instead of 6-bromo-1H-pyrrolo[2,3- b]pyridine and 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-amine was used instead of (1r,4r)-4-((4-(2-aminopyrazolo[1,5- a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)cyclohexan-1-ol (Intermediate 12). The preparation of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4-yl)pyrazolo[1,5- a]pyridin-2-amine is similar to Intermediate 12 (16 mg, 20%). MS (ESI): mass calcd. for C ₂₈ H ₃₄ N ₈ O ₃ , 530.3; m/z found, 531.2 [M+H] ⁺ . ¹ H NMR (400 MHz, Methanol-d4) δ 8.40 – 8.29 (m, 1H), 8.16 (s, 1H), 7.93 (dd, J = 2.0, 0.9 Hz, 1H), 7.44 – 7.35 (m, 1H), 7.06 (dd, J = 7.2, 2.0 Hz, 1H), 6.73 (s, 1H), 6.31 (d, J = 0.8 Hz, 1H), 4.73 – 4.62 (m, 1H), 4.24 – 4.12 (m, 1H), 4.00 (s, 3H), 3.82 – 3.62 (m, 4H), 3.01 – 2.94 (m, 2H), 2.51 (s, 3H), 2.41 – 2.29 (m, 2H), 1.99 – 1.86 (m, 2H), 1.25 (d, J = 6.6 Hz, 6H). 349

Example 342: (4R)-4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxymethyl]oxazolidin-2-one. s prepared as described in Example 203 where (S)-(2- oxooxazolidin-4-yl)methyl 4-methylbenzenesulfonate was used instead of (3- hydroxytetrahydrofuran-3-yl)methyl 4-methylbenzenesulfonate (88.5 mg, 67.6%). MS (ESI): mass calcd. for C23H23N7O3, 445.2; m/z found, 446.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.21 (s, 1H), 8.50 (d, J = 7.2 Hz, 1H), 8.36 (s, 1H), 7.91 (s, 1H), 7.85 (d, J = 1.6 Hz, 1H), 7.40 (s, 1H), 7.06 - 7.03 (m, 2H), 6.88 (s, 1H), 4.44 - 4.36 (m, 1H), 4.19 - 4.12 (m, 4H), 2.47 (s, 3H), 2.46 (s, 3H), 2.30 (s, 3H). Example 343: 4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- methyl-3-pyridyl]oxy]cyclohexanecarboxamide. 4-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5- a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)cyclohexane-1-carbo xylate. The title compound was prepared as described in Example 203 where (cis)-methyl 4-(tosyloxy)cyclohexanecarboxylate was used instead of (3-hydroxytetrahydrofuran-3-yl)methyl 4-methylbenzenesulfonate (88 mg, 350

20.9%). MS (ESI): mass calcd. for C27H30N6O3, 486.6; m/z found, 487.3 [M+H]+. ¹ H NMR (400 MHz, DMSO-d6) δ 10.22 (s, 1H), 8.58 (d, J = 7.6 Hz, 1H), 8.40 - 8.34 (m, 1H), 7.84 - 7.77 (m, 1H), 7.38 - 7.33 (m, 1H), 7.04 - 6.98 (m, 2H), 6.87 (s, 1H), 4.46 - 4.31 (m, 1H), 3.58 (s, 3H), 2.48 - 2.44 (m, 6H), 2.31 (s, 3H), 2.10 - 1.99 (m, 2H), 1.93 - 1.82 (m, 2H), 1.66 - 1.57 (m, 2H), 1.52 - 1.37 (m, 3H) Step B. (1r,4r)-4-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo [1,5-a]pyridin-5- yl)-6-methylpyridin-3-yl)oxy)cyclohexane-1-carboxylic acid. A solution consisting of (trans)- methyl 4-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]p yridin-5-yl)-6- methylpyridin-3-yl)oxy)cyclohexanecarboxylate (78.0 mg, 0.160 mmol), LiOH•H2O (10.1 mg, 0.240 mmol), THF (0.5 mL), H ₂ O (0.5 mL) and MeOH (0.5 mL) was stirred at room- temperature for 1 h. The reaction mixture concentrated to dryness under reduced pressure to give the crude product. Then added hydrated citric acid solution, during this period, yellow solid was formed. It was collected by filtration to give the crude product (100 mg, 132%) as a yellow oil. ¹ H NMR (400 MHz, DMSO-d6) δ 11.56 (br. s. , 1H), 10.22 (s, 1H), 8.58 (d, J = 7.2 Hz, 1H), 8.38 (s, 1H), 7.79 (s, 1H), 7.35 (s, 1H), 7.05 - 6.98 (m, 2H), 6.90 - 6.85 (m, 1H), 4.43 - 4.33 (m, 1H), 2.47 - 2.46 (m, 6H), 2.31 (s, 3H), 2.08 - 2.00 (m, 2H), 1.92 - 1.84 (m, 2H), 1.66 - 1.59 (m, 1H), 1.52 - 1.37 (m, 4H). Step C. (1r,4r)-4-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo [1,5-a]pyridin-5- yl)-6-methylpyridin-3-yl)oxy)cyclohexane-1-carboxamide. A mixture consisting of (trans)-4-((4- (2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyridin -5-yl)-6-methylpyridin-3- yl)oxy)cyclohexanecarboxylic acid (80.0 mg, 0.169 mmol), NH4Cl (18.1 mg, 0.339 mmol), DIEA (43.8 mg, 0.339 mmol), HATU (77.2 mg, 0.203 mmol) and DMF (3 mL ) was stirred at room-temperature for 4 hours. The crude product was purified by preparative HPLC using a Phenomenex Gemini-NX 80 x 40 mm x 3 µm column (eluent: 20% to 50% (v/v) CH ₃ CN and H2O with 0.05% NH3-H2O+10mM NH4HCO3) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the crude product as a white solid. The crude product was further purified by SFC over DAICEL CHIRALCEL OD-H 250 mm x 30 mm x 5 µm (eluent: 35% to 35% (v/v) EtOH with 0.1% NH3•H2O in supercritical CO2). The pure fractions were collected, and the volatiles were removed under reduced pressure. The product was suspended in water (10 mL), 351 the mixture frozen using dry ice/EtOH, and then lyophilized to dryness to afford fraction the title compound as white solid (14.8 mg, total yield: 15%). MS (ESI): mass calcd. for C26H29N7O2, 471.2; m/z found, 472.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.22 (s, 1H), 8.58 (d, J = 7.2 Hz, 1H), 8.38 (s, 1H), 7.79 (d, J = 0.8 Hz, 1H), 7.35 (s, 1H), 7.20 (s, 1H), 7.04 - 6.97 (m, 2H), 6.86 (br s, 1H), 6.69 (br s, 1H), 4.37 - 4.25 (m, 1H), 2.47 - 2.45 (m, 6H), 2.30 (s, 3H), 2.14 - 1.98 (m, 3H), 1.84 - 1.69 (m, 2H), 1.53 - 1.36 (m, 2H), 1.34 - 1.24 (m, 2H). Example 344: N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(3R)-1,1-dioxothiolan-3 -yl]oxy-2-methyl- 4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. N pyrimidin-4-yl)-5-(2-methyl-5-((tetrahydrothiophen-3- yl)oxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. The title compound was prepared by the similar method of Example 1 using (RS)-tetrahydrothiophen-3-ol instead of (R)-(1- methylpyrrolidin-3-yl)methanol and N-(2,6-dimethylpyrimidin-4-yl)-5-(5-fluoro-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-amine (Intermediate 15) instead of N-(5-(5-chloro- 2-cyanopyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropane carboxamide (500 mg, 75%, 50% pure). Step B. R-3-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a ]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)tetrahydrothiophene 1,1-dioxide. Oxone (805 mg, 1.31 mmol) was added to a mixture of (RS)-N-(2,6-dimethylpyrimidin-4-yl)-5-(2-methyl-5-((tetrahyd rothiophen- 3-yl)oxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2-amine (440 mg, 0.570 mmol) in THF (4 mL) and H ₂ O (0.8 mL) was stirred at room temperature for 1 hour. The pH was adjusted to 7 with 1M aq. NaHCO3. The reaction mixture was poured into 50 mL of water. During this period, white precipitate was formed. It was collected by filtration and purified by preparative HPLC using a Boston Prime C18150 x 30 mm x 5 µm column (eluent: 30% to 60% (v/v) CH ₃ CN and H ₂ O 352

with 0.05% NH3-H2O +10mM NH4HCO3) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford (RS)-3-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1, 5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)tetrahydrothiophene 1,1-dioxide (70 mg, total yield: 25%) as a white solid (racemate) which was purified by SFC over Daicel Chiralcel OD-H 250 mm x 30 mm x 5 µm (eluent: 40% to 40% (v/v) EtOH with 0.1% NH ₃ •H ₂ O in supercritical CO ₂ ). The pure fractions were collected, and the volatiles were removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/EtOH, and then lyophilized to dryness to afford the title compound (26.9 mg, 38%) as an off-white solid. MS (ESI): mass calcd. for C ₂₃ H ₂₄ N ₆ O ₃ S, 464.2; m/z found, 465.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.24 (s, 1H), 8.59 (d, J = 7.2 Hz, 1H), 8.35 (s, 1H), 7.84 (d, J = 1.2 Hz, 1H), 7.41 (s, 1H), 7.08 - 6.99 (m, 2H), 6.87 (s, 1H), 5.38 - 5.30 (m, 1H), 3.59 - 3.50 (m, 1H), 3.35 - 3.31 (m, 1H), 3.29 - 3.20 (m, 1H), 3.19 - 3.09 (m, 1H), 2.49 (s, 3H), 2.46 (s, 3H), 2.45 - 2.36 (m, 2H), 2.30 (s, 3H). Example 345: 4-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]amino]-N-isopropyl-2-methyl-benzamide. sopropyl-2-methylbenzamide. A mixture consisting of 4- bromo-2-methylbenzoic acid (1 g, 5 mmol, 1 equiv.), propan-2-amine (302 mg, 5.12 mmol, 1.1 equiv.), HATU (2.1 g, 5.6 mmol, 1.2 equiv.), and DMF (10 mL) at 0 °C was stirred for 15 min. To the mixture was added DIEA (14.5 mg, 0.112 mmol, 2 equiv.) and the reaction mixture was stirred for 1 hr at room temperature. The reaction mixture was poured into water (50 mL) and a white precipitate was formed. The precipitate was collected by filtration to give the title compound (1 g, 84%) as a white solid. 353

Step B. 4-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]amino]-N-isopropyl-2-methyl-benzamide. The title compound (99.7 mg, 42%) was prepared as described in Example 200, except 4-bromo-N-isopropyl-2-methylbenzamide (1.3 equiv.) was used instead of 4-chloro-2,6-dimethylpyrimidine in Step D. MS (ESI): mass calcd. for C28H33N5O3, 487.3; m/z found, 488.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.10 (s, 1H), 8.57 (d, J = 7.2 Hz, 1H), 8.31 (s, 1H), 7.87 (d, J = 8.0 Hz, 1H), 7.76 (d, J = 0.8 Hz, 1H), 7.40 - 7.33 (m, 2H), 7.31 (d, J = 1.6 Hz, 1H), 7.26 (d, J = 8.4 Hz, 1H), 6.97 (dd, J = 2.0, 7.2 Hz, 1H), 6.13 (s, 1H), 4.64 (s, 1H), 4.09 - 3.97 (m, 1H), 3.87 (s, 2H), 2.46 (s, 3H), 2.35 (s, 3H), 1.17 - 1.12 (m, 12H) Example 346: (3*R,6*S)-6-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazo lo[1,5-a]pyridin- 5-yl]-6-methyl-3-pyridyl]oxymethyl]tetrahydropyran-3-ol. ((tert-butyldimethylsilyl)oxy)tetrahydro-2H-pyran-2-carboxyl ate. To a solution of ethyl 5-hydroxytetrahydro-2H-pyran-2-carboxylate (4.4 g, 25 mmol, 1 equiv.) in DCM (75 mL) was added TBSCl (4.6g, 30 mmol, 1.2 equiv.) and imidazole (4.3 g, 63 mmol, 2.5 equiv.) at 0°C. The mixture was stirred overnight then diluted with DCM (100 mL) and washed with 1N HCl (50 mL) and saturated aqueous NaHCO3 (50 mL). The organic phase was evaporated to dryness under reduced pressure to give the crude product, ethyl 5-((tert- butyldimethylsilyl)oxy)tetrahydro-2H-pyran-2-carboxylate, as a colorless oil (6 g, 82%). Step B. (5-((tert-butyldimethylsilyl)oxy)tetrahydro-2H-pyran-2-yl)me thanol. To a solution of ethyl 5-((tert-butyldimethylsilyl)oxy)tetrahydro-2H-pyran-2-carbox ylate (5.5 g, 19 mmol, 1 equiv.) and MeOH (50 mL) at 0°C was added sodium borohydride (1.1 g, 29 mmol, 1.5 354

equiv.). The reaction mixture was left to stir for 2 hr at room temperature then quenched with NH4Cl (50 mL). The reaction mixture was directly concentrated to afford the crude product, then H ₂ O (80 mL) was added to the mixture and the mixture was extracted with ethyl acetate (100 mL x 2). The combined organic layers were washed with brine (50 mL x 2), dried over sodium sulfate, then filtered and concentrated to give the title compound, (5-((tert- butyldimethylsilyl)oxy)tetrahydro-2H-pyran-2-yl)methanol, as a colorless oil (5 g, 106%). Step C. (5-((tert-butyldimethylsilyl)oxy)tetrahydro-2H-pyran-2-yl)me thyl 4- methylbenzenesulfonate. A mixture consisting of (5-((tert-butyldimethylsilyl)oxy)tetrahydro-2H- pyran-2-yl)methanol (5.0 g, 20 mmol, 1 equiv.), DMAP (3.0 g, 24 mmol, 1.2 equiv.), and DCM (50 mL) was cooled to 0°C and 4-toluenesulfonyl chloride (4.3 g, 22.3 mmol, 1.1 equiv.) was added. The reaction mixture was stirred overnight at room temperature. The reaction mixture was diluted with H2O (100 mL), washed with 1 M HCl (50 mL) followed by saturated aqueous NaHCO ₃ (50 mL), dried over sodium sulfate, filtered, and concentrated to dryness under reduced pressure to give the crude product, (5-((tert-butyldimethylsilyl)oxy)tetrahydro-2H-pyran-2- yl)methyl 4-methylbenzenesulfonate, as a colorless oil (6.5 g, 80%). Step D. 5-(5-(((2*S,5*R)-5-((tert-butyldimethylsilyl)oxy)tetrahydro- 2H-pyran-2- yl)methoxy)-2-methylpyridin-4-yl)-N-(2,6-dimethylpyrimidin-4 -yl)pyrazolo[1,5-a]pyridin-2- amine. A mixture consisting of Intermediate 16 (500 mg, 1.4 mmol, 1 equiv.), (5-((tert- butyldimethylsilyl)oxy)tetrahydro-2H-pyran-2-yl)methyl 4-methylbenzenesulfonate (752 mg, 1.9 mmol, 1.3 equiv.), cesium carbonate (941 mg, 2.9 mmol, 2 equiv.), and DMF (10 mL) was heated via microwave at 90°C for 1 hr. The reaction mixture was directly concentrated to afford the crude product, which was purified by FCC (eluent: petroleum ether:ethyl acetate = 1:0 to 0:1) to afford the title compound, 5-(5-((5-((tert-butyldimethylsilyl)oxy)tetrahydro-2H-pyran-2 - yl)methoxy)-2-methylpyridin-4-yl)-N-(2,6-dimethylpyrimidin-4 -yl)pyrazolo[1,5-a]pyridin-2- amine, as a yellow solid. The material was further purified by SFC over DAICEL CHIRALPAK AD 250 mm x 30 mm, 10 µm (eluent: 50% to 50% (v/v) supercritical CO ₂ in MeOH and H ₂ O with 0.1% NH ₃ ). The pure fractions were collected and the volatiles were removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/acetone, and then lyophilized to dryness to afford 5-(5-(((2*S,5*R)-5-((tert- 355

butyldimethylsilyl)oxy)tetrahydro-2H-pyran-2-yl)methoxy)- 2-methylpyridin-4-yl)-N-(2,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine (50 mg). Step E. (3*R,6*S)-6-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazo lo[1,5- a]pyridin-5-yl]-6-methyl-3-pyridyl]oxymethyl]tetrahydropyran -3-ol. A solution consisting of 5- (5-(((2*S,5*R)-5-((tert-butyldimethylsilyl)oxy)tetrahydro-2H -pyran-2-yl)methoxy)-2- methylpyridin-4-yl)-N-(2,6-dimethylpyrimidin-4-yl)pyrazolo[1 ,5-a]pyridin-2-amine (120 mg, 0.21 mmol, 1 equiv.), trifluoroacetic acid (2 mL), and DCM (1 mL) was stirred for 1 hr at room temperature. The reaction mixture was directly concentrated under reduced pressure to afford crude product. Water (5 mL) was added to the residue and the pH was adjusted to 8 with 1 M NaHCO _3. A yellow precipitate was formed and collected by filtration then air-dried. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound, (3*R,6*S)-6-[[4-[2-[(2,6-dimethylpyrimidin-4- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-6-methyl-3-pyridyl]oxy methyl]tetrahydropyran-3-ol, as a yellow solid (97.3 mg, 81%). MS (ESI): mass calcd. for C ₂₅ H ₂₈ N ₆ O ₃ , 460.2; m/z found, 461.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.21 (s, 1H), 8.59 (d, J = 6.8 Hz, 1H), 8.32 (s, 1H), 7.92 (s, 1H), 7.38 (s, 1H), 7.07 (d, J = 6.4 Hz, 1H), 7.01 (s, 1H), 6.88 (s, 1H), 4.80 (d, J = 4.8 Hz, 1H), 4.20 - 4.03 (m, 2H), 3.92 - 3.81 (m, 1H), 3.62 - 3.51 (m, 1H), 3.49 - 3.39 (m, 1H), 3.05 - 2.92 (m, 1H), 2.48 - 2.42 (m, 6H), 2.30 (s, 3H), 2.03 - 1.91 (m, 1H), 1.76 - 1.64 (m, 1H), 1.49 - 1.28 (m, 2H). Example 347: (3*S,6*S)-6-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazo lo[1,5-a]pyridin- 5-yl]-6-methyl-3-pyridyl]oxymethyl]tetrahydropyran-3-ol. 6

The title compound (62.3 mg, 52%) was prepared as described in Example 346, except 5- (5-(((2*R,5*S)-5-((tert-butyldimethylsilyl)oxy)tetrahydro-2H -pyran-2-yl)methoxy)-2- methylpyridin-4-yl)-N-(2,6-dimethylpyrimidin-4-yl)pyrazolo[1 ,5-a]pyridin-2-amine (1 equiv.) was used instead of 5-(5-(((2*S,5*R)-5-((tert-butyldimethylsilyl)oxy)tetrahydro- 2H-pyran-2- yl)methoxy)-2-methylpyridin-4-yl)-N-(2,6-dimethylpyrimidin-4 -yl)pyrazolo[1,5-a]pyridin-2- amine in Step E. MS (ESI): mass calcd. for C ₂₅ H ₂₈ N ₆ O ₃ , 460.2; m/z found, 461.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.23 (s, 1H), 8.60 (d, J = 6.8 Hz, 1H), 8.32 (s, 1H), 7.93 (d, J = 1.2 Hz, 1H), 7.38 (s, 1H), 7.08 (dd, J = 2.0, 7.2 Hz, 1H), 7.01 (s, 1H), 6.88 (s, 1H), 4.81 (d, J = 5.2 Hz, 1H), 4.18 - 4.04 (m, 2H), 3.92 - 3.81 (m, 1H), 3.61 - 3.50 (m, 1H), 3.49 - 3.39 (m, 1H), 3.04 - 2.94 (m, 1H), 2.48 - 2.43 (m, 6H), 2.31 (s, 3H), 2.03 - 1.91 (m, 1H), 1.76 - 1.64 (m, 1H), 1.48 - 1.26 (m, 2H) Example 348: N-(2,6-dimethylpyrimidin-4-yl)-6-[2-methyl-5-[[(1R,5S)-3-oxa -9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]imidazo[1,2-a]pyr azin-2-amine. s prepared in the similar manner of Example 320 except 4-chloro- 2,6-dimethylpyrimidine was used instead of 2-chloro-5-methylpyrazine in Step B. MS (ESI): mass calcd. for C ₂₆ H ₂₉ N ₇ O ₂ , 471.6; m/z found, 472.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol- d4) δ 8.30 (d, J = 7.2 Hz, 1H), 8.06 (s, 1H), 7.96 (d, J = 1.8 Hz, 1H), 7.28 (s, 1H), 7.07 (dd, J = 7.2, 2.0 Hz, 1H), 6.92 (s, 1H), 6.71 (s, 1H), 4.58-4.50 (m, 1H), 3.75 – 3.56 (m, 4H), 2.94 – 2.86 (m, 2H), 2.43-2.41 (two s, 6H), 2.34 – 2.24 (m, 5H), 1.92 – 1.82 (m, 2H) Example 349: N-(2,6-dimethylpyrimidin-4-yl)-6-[2-methyl-5-[[(1R,5S)-9-met hyl-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]imidazo[1,2-a]pyr azin-2-amine. 357

methylpyrimidin-4-yl)-6-[2-methyl-5-[[(1R,5S)-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]imidazo[1,2-a]pyr azin-2-amine (Example 350) (64.0 mg, 0.109 mmol), TEA (22.1 mg, 0.218 mmol) and paraformaldehyde (10.8 mg, 0.120 mmol) in MeOH (2 mL) was stirred at 25°C for 5 min. then NaBH ₃ CN (13.7 mg, 0.218 mmol) was added to the reaction mixture. The reaction mixture was stirred at 25°C for 1 hours. The mixture was filtered, and the filtrate was purified by preparative HPLC using a Phenomenex Gemini-NX C18 75*30mm*3um (eluent: 22% to 55%(v/v) water (0.04% NH ₃ -H ₂ O +10mM NH ₄ HCO ₃ )-ACN to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound as a white solid (24.5 mg, 45%). MS (ESI): mass calcd. for C ₂₆ H ₃₀ N ₈ O ₂ , 486.2; m/z found, 487.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 10.04 (s, 1H), 8.95 (s, 1H), 8.37 (s, 1H), 8.18 (s,1H), 8.01 (s, 1H), 7.62 (s, 1H), 6.52 (s, 1H), 4.91 - 4.84 (m, 1H), 4.20 - 4.10 (m,2H), 3.93 - 3.87 (m, 2H), 2.84 - 2.75 (m, 2H), 2.67 (s, 3H), 2.62 - 2.52 (m, 8H), 2.43 (s, 3H), 1.92 - 1.89 (m, 1H), 1.88 - 1.84 (m, 1H). Example 351: (3*R, 5*S)-5-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin- 5-yl]-6-methyl-3-pyridyl]oxymethyl]tetrahydropyran-3-ol. 8

Step A. ((3S,5R)-5-((tert-butyldimethylsilyl)oxy)tetrahydro-2H-pyran -3-yl)methyl 4-methylbenzenesulfonate. A solution consisting of ((3R,5R)-5-((tert- butyldimethylsilyl)oxy)tetrahydro-2H-pyran-3-yl)methanol (700 mg, 2.8 mmol, 1 equiv.), DMAP (521 mg, 4.3 mmol, 1.5 equiv.), and dichloromethane (15 mL) was treated with TsCl (596 mg, 3.13 mmol, 1.1 equiv.) at room-temperature. The mixture was stirred overnight at room-temperature.The mixture was concentrated under reduced pressure to give a crude product which was purified by FCC (eluent: petroleum ether: CH ₂ Cl ₂ = 1:0 to 3:1) to afford the product, ((3S,5R)-5-((tert-butyldimethylsilyl)oxy)tetrahydro-2H-pyran -3-yl)methyl 4- methylbenzenesulfonate, as a colorless oil (550 mg, 48%). Step B. 5-(5-(((3S,5R)-5-((tert-butyldimethylsilyl)oxy)tetrahydro-2H -pyran-3- yl)methoxy)-2-methylpyridin-4-yl)-N-(2,6-dimethylpyrimidin-4 -yl)pyrazolo[1,5-a]pyridin-2- amine. To a mixture containing Intermediate 16 (290 mg, 0.84 mmol, 1 equiv.), cesium carbonate (818 mg, 2.5 mmol, 3 equiv.), and DMF (5 mL), was added ((3S,5R)-5-((tert- butyldimethylsilyl)oxy)tetrahydro-2H-pyran-3-yl)methyl 4-methylbenzenesulfonate (503 mg, 0.84 mmol, 1.5 equiv.) at room temperature. The mixture was stirred for 1 hour at 90°C via microwave. The mixture was concentrated under reduced pressure to give a crude product which was purified by FCC (eluent: petroleum ether: (ethyl acetate:EtOH=3:1) = 1:0 to 1:1) to afford 5- (5-(((3S,5R)-5-((tert-butyldimethylsilyl)oxy)tetrahydro-2H-p yran-3-yl)methoxy)-2- methylpyridin-4-yl)-N-(2,6-dimethylpyrimidin-4-yl)pyrazolo[1 ,5-a]pyridin-2-amine as a yellow solid (170 mg, 32%). Step C. (3S,5R)-5-(((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazol o[1,5- a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)methyl)tetrahydro-2 H-pyran-3-ol. A mixture consisting of 5-(5-(((3S,5R)-5-((tert-butyldimethylsilyl)oxy)tetrahydro-2H -pyran-3-yl)methoxy)- 2-methylpyridin-4-yl)-N-(2,6-dimethylpyrimidin-4-yl)pyrazolo [1,5-a]pyridin-2-amine (150 mg, 0.261 mmol) and TFA/CH2Cl2 (5 mL,1/3) was stirred at room temperature for 1 hr.The solution was directly concentrated to afford the crude product, which was purified by preparative HPLC using a Phenomenex Gemini-NX 150 x 30 mm x 5 µm column (eluent: 21% to 51% (v/v) CH3CN with 0.05% NH3-H2O) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford (3S,5R)- 359

5-(((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5 -a]pyridin-5-yl)-6-methylpyridin-3- yl)oxy)methyl)tetrahydro-2H-pyran-3-ol as a white solid (90 mg, 74%). Step D. (3*R, 5*S)-5-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5- a]pyridin-5-yl]-6-methyl-3-pyridyl]oxymethyl]tetrahydropyran -3-ol. The material (3S,5R)-5- (((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]py ridin-5-yl)-6-methylpyridin-3- yl)oxy)methyl)tetrahydro-2H-pyran-3-ol (90 mg, 0.055 mmol) was further purified by SFC with a Daicel ChiralPak AD (250 mm x 30 mm, 10 um) column (eluent: 55% to 55% (v/v) EtOH with 0.1% NH3-H2O in supercritical CO2) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/EtOH, and then lyophilized to dryness to afford the title compound (3*R, 5*S)-5-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin- 5-yl]-6-methyl-3-pyridyl]oxymethyl]tetrahydropyran-3-ol as a white solid (36.8 mg, 40%). MS (ESI): mass calcd. for C25H28N6O3, 460.2; m/z found, 461.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.38 (d, J = 7.2 Hz, 1H), 8.23 (s, 1H), 7.61 - 7.54 (m, 2H), 7.17 (s, 1H), 7.10 (s, 1H), 6.90 (dd, J = 1.6, 7.2 Hz, 1H), 6.57 (s, 1H), 4.04 - 3.97 (m, 2H), 3.97 - 3.88 (m, 2H), 3.84 - 3.75 (m, 1H), 3.26 - 3.16 (m, 1H), 3.13 - 3.03 (m, 1H), 2.61 (s, 3H), 2.56 (s, 3H), 2.45 (s, 3H), 2.28 - 2.11 (m, 2H), 2.04 (br. S., 1H), 1.40 - 1.29 (m, 1H). Example 352: (rac-)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(1,1-dioxo-1,2,5 -thiadiazolidin-3- yl)methoxy]-2-methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amin e. 2-tetramethyl-4,10-dioxo-3,11-dioxa-5,9-diazatridecan-7-yl 4- methylbenzenesulfonat. A solution consisting of di-tert-butyl (2-hydroxypropane-1,3- diyl)dicarbamate (600 mg, 2.1 mmol, 1 equiv.), DMAP (379 mg, 3.1 mmol, 1.5 equiv.), and dichloromethane (15 mL) was treated with TsCl (433 mg, 2.3 mmol, 1.1 equiv.) at room- temperature. The mixture was stirred for 3 hr at room-temperature. The mixture was 360

concentrated under reduced pressure to give a crude product which was purified by FCC (eluent: petroleum ether: CH2Cl2 = 1:0 to 3:1) to afford the product, 2,2,12,12-tetramethyl-4,10-dioxo- 3,11-dioxa-5,9-diazatridecan-7-yl 4-methylbenzenesulfonat, as a colorless oil (850 mg, 93%). Step B. Di-tert-butyl (2-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5- a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)propane-1,3-diyl)di carbamate. Di-tert-butyl (3-((4-(2- ((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyridin-5- yl)-6-methylpyridin-3- yl)oxy)propane-1,2-diyl)dicarbamate. A mixture consisting of Intermediate 16 (500 mg, 1.44 mmol, 1 equiv.), 2,2,12,12-tetramethyl-4,10-dioxo-3,11-dioxa-5,9-diazatrideca n-7-yl 4- methylbenzenesulfonat (834 mg, 1.88 mmol, 1.3 equiv.), cesium carbonate (941 mg, 2.89 mmol, 2 equiv.),potassium iodide (240 mg, 1.44 mmol, 1 equiv.) and DMF (10 mL) was stirred for 2 hr at 120 °C. The mixture was concentrated under reduced pressure to give a crude product which was purified by FCC (eluent: petroleum ether: (ethyl acetate:EtOH=3:1) = 1:0 to 1:1) to afford a mixture of products, di-tert-butyl (2-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5- a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)propane-1,3-diyl)di carbamate and di-tert-butyl (3-((4- (2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyridin -5-yl)-6-methylpyridin-3- yl)oxy)propane-1,2-diyl)dicarbamate as a yellow solid (400 mg, 21%). Step C. 2-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]p yridin-5-yl)-6- methylpyridin-3-yl)oxy)propane-1,3-diamine.3-((4-(2-((2,6-di methylpyrimidin-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)o xy)propane-1,2-diamine. A solution consisting of a mixture of di-tert-butyl (2-((4-(2-((2,6-dimethylpyrimidin-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)o xy)propane-1,3-diyl)dicarbamate and di-tert-butyl (3-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a] pyridin-5-yl)-6- methylpyridin-3-yl)oxy)propane-1,2-diyl)dicarbamate (400 mg, 0.32 mmol, 1 equiv.) and trifluoroacetic acid/DCM (10 mL, 1:3) was stirred at room temperature for 1 hr. The mixture was concentrated under reduced pressure to give a crude product. The product was suspended in water (10 mL), the mixture frozen using dry ice/EtOH, and then lyophilized to dryness to afford a mixture of compounds 2-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]p yridin-5- yl)-6-methylpyridin-3-yl)oxy)propane-1,3-diamine and 3-((4-(2-((2,6-dimethylpyrimidin-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)o xy)propane-1,2-diamine as a yellow solid (400 mg, 139%). 361

Step D. (RS)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(1,1-dioxo-1,2,5- thiadiazolidin-3-yl)methoxy]-2-methyl-4-pyridyl]pyrazolo[1,5 -a]pyridin-2-amine. A mixture consisting of 2-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]p yridin-5-yl)-6- methylpyridin-3-yl)oxy)propane-1,3-diamine and 3-((4-(2-((2,6-dimethylpyrimidin-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)o xy)propane-1,2-diamine (380 mg, 0.908 mmol, 1 equiv.), sulfuric diamide (436 mg, 4.54 mmol, 5 equiv.), and Py (10 mL) was stirred at 120 °C via microwave for 20 min. The solution was concentrated to afford the crude product, which was purified by preparative HPLC using a Phenomenex Gemini-NX 150 x 30 mm x 5 µm column (eluent: 25% to 55% (v/v) CH3CN with 0.05% NH3-H2O) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the product, (RS)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5- [(1,1-dioxo-1,2,5-thiadiazolidin-3-yl)methoxy]-2-methyl-4-py ridyl]pyrazolo[1,5-a]pyridin-2- amine, as an off-white solid (12.5 mg, 5%). MS (ESI): mass calcd. for C ₂₂ H ₂₄ N ₈ O ₃ S, 480.2; m/z found, 481.1 [M+H]+.1H NMR (400 MHz, DMSO-d6) δ 10.22 (s, 1H), 8.56 (d, J = 7.2 Hz, 1H), 8.35 (s, 1H), 7.86 (s, 1H), 7.38 (s, 1H), 7.28 (d, J = 4.8 Hz, 1H), 7.07 (dd, J = 1.6, 7.2 Hz, 1H), 7.02 (br. s., 1H), 6.95 (t, J = 7.2 Hz, 1H), 6.89 (s, 1H), 4.14 (d, J = 6.4 Hz, 2H), 4.04 - 3.91 (m, 1H), 3.46 - 3.43 (m, 1H), 3.22 - 3.12 (m, 1H), 2.47 (s, 3H), 2.46 (s, 3H), 2.30 (s, 3H). Example 353: (rac-)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(1,1-dioxo-1,2-t hiazolidin-3- yl)methoxy]-2-methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amin e. of Intermediate 16 (250 mg, 0.722 mmol, 1 equiv.), and TEA (219 mg, 2.17 mmol, 3 equiv.) in EtOH (5 mL) was added 2-thia-1-azabicyclo[3.1.0]hexane 2,2- dioxide (96.1 mg, 0.72 mmol, 1 equiv.).The mixture was stirred overnight at 60 °C. The solution was concentrated to afford the crude product, which was purified by preparative HPLC using a 362

Phenomenex Gemini-NX 150 x 30 mm x 5 µm column (eluent: 22% to 52% (v/v) CH3CN with 0.05% NH3-H2O) to afford product. The product was suspended in water (10 mL) then the mixture was frozen using dry ice/ethanol then lyophilized to dryness to afford the crude product as an off-white solid (15 mg, 4%). The material was further purified by SFC with a DAICEL CHIRALCEL OJ (250 mm x 50 mm, 10 um) column (eluent: 50% to 50% (v/v) EtOH with 0.1% NH ₃ -H ₂ O in supercritical CO ₂ ) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/EtOH, and then lyophilized to dryness to afford (RS)-N- (2,6-dimethylpyrimidin-4-yl)-5-[5-[(1,1-dioxo-1,2-thiazolidi n-3-yl)methoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine as an off-white solid (12.6 mg, 88%). MS (ESI): mass calcd. for C ₂₃ H ₂₅ N ₇ O ₃ S, 479.2; m/z found, 480.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.22 (s, 1H), 8.55 (d, J = 7.2 Hz, 1H), 8.35 (s, 1H), 7.88 (s, 1H), 7.38 (s, 1H), 7.30 (d, J = 4.8 Hz, 1H), 7.09 (dd, J = 1.6, 7.2 Hz, 1H), 7.02 (br. s., 1H), 6.90 (br. s., 1H), 4.11 (d, J = 5.2 Hz, 2H), 3.92 - 3.80 (m, 1H), 3.20 - 3.09 (m, 1H), 3.06 - 2.95 (m, 1H), 2.47 (s, 3H), 2.46 (s, 3H), 2.45 - 2.41 (m, 1H), 2.30 (s, 3H), 2.15 - 2.02 (m, 1H). Example 354: (*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(2-methyl- 1,1-dioxo- thiazinan-4-yl)oxy-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. 2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyridin-5- yl)-6-methylpyridin-3-yl)oxy)-1,2-thiazinane 1,1-dioxide. To a mixture consisting of Intermediate 16 (4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyri din-5-yl)-6- methylpyridin-3-ol) (250 mg, 0.722 mmol, 1 equiv.), TEA (219 mg, 2.17 mmol, 3 equiv.) and EtOH (5 mL) was added 2-thia-1-azabicyclo[3.1.0]hexane 2,2-dioxide (96.1 mg, 0.722 mmol, 1 equiv.). The mixture was stirred for 2 days at 60 °C. The solution was concentrated to afford the title product (400 mg, crude) as a yellow solid. 363

Step B. (*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(2-methyl- 1,1-dioxo- thiazinan-4-yl)oxy-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. The material (trimethylsilyl)diazomethane (1.10 mL, 2.19 mmol, 3 equiv., 2M in hexane) was added dropwise to a solution consisting of 4-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]p yridin- 5-yl)-6-methylpyridin-3-yl)oxy)-1,2-thiazinane 1,1-dioxide (350 mg, 0.73 mmol, 1 equiv.) and MeOH/DCM (15 mL, 1:2).The resultant mixture was stirred overnight at 30°C.The solution was concentrated to afford the crude product, which was purified by preparative HPLC using a Boston Prime C18150 x 30 mm x 5 µm column (eluent: 30% to 60% (v/v) CH3CN with 0.05% NH3-H2O +10mM NH4HCO3) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford (RS)-N- (2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(2-methyl-1,1-dio xo-thiazinan-4-yl)oxy-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine (60 mg, 16%) as a yellow solid. The material was further purified by SFC with a DAICEL CHIRALPAK AD (250 mm x 30 mm, 10 um) column (eluent: 50% to 50% (v/v) IPA with 0.1% NH ₃ -H ₂ O in supercritical CO ₂ ) to afford pure product. The first eluted isomer was designated as *R isomer. The product was suspended in water (10 mL), the mixture frozen using dry ice/EtOH, and then lyophilized to dryness to afford the title compound (13.5 mg, 22%) as a white solid. MS (ESI): mass calcd. for C ₂₄ H ₂₇ N ₇ O ₃ S, 493.2; m/z found, 494.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.41 (d, J = 7.2 Hz, 1H), 8.28 (s, 1H), 7.68 (br. s., 1H), 7.64 (s, 1H), 7.23 (s, 1H), 7.12 (s, 1H), 6.93 (dd, J = 2.0, 7.6 Hz, 1H), 6.63 (s, 1H), 4.49 - 4.42 (m, 1H), 3.60 - 3.53 (m, 1H), 3.45 - 3.38 (m, 1H), 3.29 - 3.18 (m, 1H), 3.02 - 2.94 (m, 1H), 2.73 (s, 3H), 2.61 (s, 3H), 2.59 (s, 3H), 2.51 - 2.43 (m, 5H) Example 355: (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(2-methyl- 1,1-dioxo- thiazinan-4-yl)oxy-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. 4

The title compound (12.8 mg, 21%) was prepared as described in Example 354, except the second elute isomer by SFC with a DAICEL CHIRALPAK AD was designated as *S isomer. MS (ESI): mass calcd. for C ₂₄ H ₂₇ N ₇ O ₃ S, 493.2; m/z found, 494.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.41 (d, J = 7.2 Hz, 1H), 8.28 (s, 1H), 7.67 (br. s., 1H), 7.63 (s, 1H), 7.23 (s, 1H), 7.11 (s, 1H), 6.93 (dd, J = 2.0, 7.2 Hz, 1H), 6.63 (s, 1H), 4.50 - 4.40 (m, 1H), 3.61 - 3.51 (m, 1H), 3.45 - 3.37 (m, 1H), 3.29 - 3.18 (m, 1H), 3.03 - 2.93 (m, 1H), 2.73 (s, 3H), 2.61 (s, 3H), 2.59 (s, 3H), 2.53 - 2.39 (m, 5H) Example 356: 6-[[5-[5-[[(1S,5R)-9-acetyl-3-oxa-9-azabicyclo[3.3.1]nonan-7 -yl]oxy]-2-methyl- 4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-N-methyl-pyridi ne-3-carboxamide. R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. A mixture consisting of Intermediate 9 (900 mg, 0.86 mmol, 1 equiv.) and trifluoroacetic acid/DCM (20 mL, 1:3) was stirred at room temperature for 2 hr. The mixture was concentrated under reduced pressure to give a crude product. The product was suspended in water (10 mL), the mixture frozen using dry ice/EtOH, and then lyophilized to dryness to afford 5-(5-(((1R,5S,7s)-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl)oxy)-2-methylpyridin-4-yl)pyrazo lo[1,5-a]pyridin-2-amine (500 mg, crude) as a yellow solid. Step B. 1-((1R,5S,7s)-7-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonan-9-yl) ethan-1-one. To a mixture consisting of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-amine (440 mg, 1.20 mmol, 1 equiv.), TEA, (366 mg, 3.61 mmol, 3 365

equiv.) and DCM (10 mL) at 0°C, acetyl chloride (70.9 mg, 0.90 mmol, 0.75 equiv.) in DCM (1 mL) was added dropwise. The mixture was stirred at 0°C for 0.5hr. The mixture was concentrated under reduced pressure to give the product, 1-((1R,5S,7s)-7-((4-(2- aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)- 3-oxa-9-azabicyclo[3.3.1]nonan- 9-yl)ethan-1-one (500 mg, crude), as a yellow solid. Step C. 6-[[5-[5-[[(1S,5R)-9-acetyl-3-oxa-9-azabicyclo[3.3.1]nonan-7 -yl]oxy]-2- methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-N-methyl -pyridine-3-carboxamide. A mixture consisting 1-((1R,5S,7s)-7-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-m ethylpyridin-3- yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonan-9-yl)ethan-1-one (92.1 mg, 0.540 mmol, 1 equiv.), 6- chloro-N-methylnicotinamide (92.1 mg, 0.54 mmol, 1 equiv.), Brettphos-Pd-G3 (49 mg, 0.054 mmol.0.1 equiv.), Cs2CO3 (528 mg, 1.62 mmol, 3 equiv.), and 1,4-dioxane (7 mL) was stirred for 3 h at 120 °C under N2.The solution was concentrated to afford the crude product, which was purified by preparative HPLC using a Boston Prime C18150 x 30 mm x 5 µm column (eluent: 25% to 55% (v/v) CH ₃ CN and H ₂ O with 0.05% NH ₃ -H ₂ O + 10mM NH ₄ HCO ₃ ) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound, 6-[[5-[5-[[(1S,5R)-9-acetyl-3-oxa- 9-azabicyclo[3.3.1]nonan-7-yl]oxy]-2-methyl-4-pyridyl]pyrazo lo[1,5-a]pyridin-2-yl]amino]-N- methyl-pyridine-3-carboxamide, as a yellow solid (47.6 mg, 16%). MS (ESI): mass calcd. for C29H31N7O4, 541.2; m/z found, 542.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.21 (s, 1H), 8.71 (d, J = 2.0 Hz, 1H), 8.55 (d, J = 7.2 Hz, 1H), 8.37 - 8.31 (m, 1H), 8.26 (s, 1H), 8.07 (d, J = 1.2 Hz, 1H), 8.04 (dd, J = 2.0, 8.4 Hz, 1H), 7.39 (s, 1H), 7.35 (d, J = 8.4 Hz, 1H), 7.15 (dd, J = 1.6, 6.8 Hz, 1H), 6.86 (s, 1H), 4.52 - 4.41 (m, 2H), 4.03 - 3.96 (m, 1H), 3.75 - 3.64 (m, 2H), 3.61 - 3.53 (m, 1H), 3.48 - 3.42 (m, 1H), 2.79 (d, J = 4.4 Hz, 3H), 2.47 (s, 3H), 2.44 - 2.35 (m, 1H), 2.26 - 2.15 (m, 1H), 2.01 (s, 3H), 1.92 - 1.81 (m, 2H) Example 357: 2,6-dimethoxy-N-methyl-4-[[5-[2-methyl-5-[[(1S,5R)-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-yl]amino]benzamide. 366

mg, 62%) was prepared as described in Example 340, except 4- bromo-2,6-dimethoxy-N-methylbenzamide (1.5 equiv.) was used instead of 4-bromo-N- isopropyl-2,6-dimethoxybenzamide. The preparation of 4-bromo-2,6-dimethoxy-N- methylbenzamide was similar to Step A in Example 245, except propan-2-amine (2 equiv.) was used instead of cyclopropyl amine, DMF (5 mL) was used instead of DCM, and DIEA (3 equiv.) was use instead Et3N. MS (ESI): mass calcd. for C30H34N6O5, 558.3; m/z found, 559.2 [M+H] ⁺ . 1H NMR (400 MHz, DMSO-d6) δ 9.12 (s, 1H), 8.53 (d, J = 7.6 Hz, 1H), 8.28 (s, 1H), 7.93 (d, J = 0.8 Hz, 1H), 7.79 (q, J = 4.4 Hz, 1H), 7.37 (s, 1H), 7.06 (dd, J = 2.0, 7.2 Hz, 1H), 6.87 (s, 2H), 6.12 (s, 1H), 4.70 - 4.62 (m, 1H), 3.73 (s, 6H), 3.60 - 3.56 (m, 2H), 3.55 - 3.50 (m, 2H), 2.95 (d, J = 8.0 Hz, 2H), 2.66 (d, J = 4.8 Hz, 3H), 2.46 (s, 3H), 2.34 - 2.25 (m, 2H), 1.72 - 1.64 (m, 2H). Example 358: 6-[[5-[5-[[(1R,5S,7s)-9-acetyl-3-oxa-9-azabicyclo[3.3.1]nona n-7-yl]oxy]-2- methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-N,2,4-tr imethyl-pyridine-3-carboxamide. methylnicotinic acid. To a solution consisting of methyl 6-chloro- 2,4-dimethylnicotinate (500 mg, 2.51 mmol, 1 equiv.), H ₂ O (2 mL), MeOH (4 mL) and THF (4 mL) was added lithium hydroxide monohydrate (210 mg, 5.01 mmol, 2 equiv). The mixture was stirred at room-temperature for 1 hr. To the mixture was added additional lithium hydroxide 367

monohydrate (315 mg, 7.51 mmol, 3 equiv.). The mixture was stirred at room-temperature for 1 hour. Under reduced pressure THF and MeOH was removed. The residue was acidified with aqueous citric acid solution to pH = 6~7. The reaction mixture was diluted with H ₂ O (10 mL) and extracted with EtOAc (30 mL x 3). The organic phases were combined, dried over anhydrous sodium sulfate, filtered, and concentrated under reduced pressure to afford the product, 6-chloro-2,4-dimethylnicotinic acid, as a white solid (330 mg, 71%). Step B.6-chloro-N,2,4-trimethylnicotinamide. To a mixture of 6-chloro-2,4- dimethylnicotinic acid (280 mg, 1.51 mmol, 1 equiv.), MeNH2HCl (204 mg, 3.02 mmol, 2 equiv.), DIEA (780 mg, 6.03 mmol, 4 equiv.) and DMF (5.5 mL) was added HATU (688 mg, 1.81 mmol, 1.2 equiv.) . The mixture was stirred at room temperature for 1 hr.The reaction mixture was diluted with H2O (10 mL) and extracted with EtOAc (20 mL x 3). The organic phases were combined and concentrated under reduced pressure to afford the crude product, which was purified by FCC (ethyl acetate: petroleum ether = 0 to 60%) to afford the compound, 6-chloro-N,2,4-trimethylnicotinamide, as a white solid (250 mg, 83%). Step C.6-[[5-[5-[[(1S,5R)-9-acetyl-3-oxa-9-azabicyclo[3.3.1]nonan -7-yl]oxy]-2-methyl- 4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-N,2,4-trimethyl -pyridine-3-carboxamide. The title compound (58.6 mg, 23%), 6-[[5-[5-[[(1S,5R)-9-acetyl-3-oxa-9-azabicyclo[3.3.1]nonan-7 - yl]oxy]-2-methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino ]-N,2,4-trimethyl-pyridine-3- carboxamide, was prepared as described in Example 356, except 6-chloro-N,2,4- trimethylnicotinamide (1 equiv.) was used instead of 6-chloro-N-methylnicotinamide, Xantphos (0.2 equiv.) was used instead of Brettphos-Pd-G3, cesium fluoride (3 equiv.) was used instead of Cs2CO3, and palladium (II) acetate was added (0.1 equiv.). MS (ESI): mass calcd. for C ₃₁ H ₃₅ N ₇ O ₄ , 569.3; m/z found, 570.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 9.75 (s, 1H), 8.51 (d, J = 7.2 Hz, 1H), 8.25 (s, 1H), 8.18 (q, J = 4.4 Hz, 1H), 8.04 (d, J = 1.2 Hz, 1H), 7.40 (s, 1H), 7.12 (dd, J = 2.0, 7.2 Hz, 1H), 7.05 (s, 1H), 6.81 (s, 1H), 4.50 - 4.43 (m, 2H), 4.00 (d, J = 6.8 Hz, 1H), 3.73 - 3.67 (m, 2H), 3.57 (dd, J = 2.0, 11.2 Hz, 1H), 3.45 (dd, J = 2.8, 11.6 Hz, 1H), 2.76 (d, J = 4.8 Hz, 3H), 2.46 (s, 3H), 2.44 - 2.36 (m, 1H), 2.33 (s, 3H), 2.27 - 2.19 (m, 1H), 2.17 (s, 3H), 2.01 (s, 3H), 1.91 - 1.81 (m, 2H). 368

Example 359: 5-[5-(2-amino-2-methyl-propoxy)-2-methyl-4-pyridyl]-N-(2,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. opropyl 4-methylbenzenesulfonate. To a solution consisting of 2- methyl-2-nitropropan-1-ol (1.0 g, 8.4 mmol), DMAP (2.56 g, 21.0 mmol), and dichloromethane (20 mL) at 0°C was added 4-toluenesulfonyl chloride (2.40 g, 12.6 mmol, 1.5 equiv.). The resultant mixture was stirred overnight at room-temperature. To the reaction mixture was added HCl (1 M, 20 mL) and DCM (20 mL) and the resultant mixture was stirred at room-temperature for 2 mins. The layers were separated and the reaction was extracted with dichloromethane to get the crude product, 2-methyl-2-nitropropyl 4-methylbenzenesulfonate (2.25 g, 98%). Step B. N-(2,6-dimethylpyrimidin-4-yl)-5-(2-methyl-5-(2-methyl-2- nitropropoxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2-amine.To a mixture consisting of Intermediate 16 (400 mg, 1.16 mmol, 1 equiv.), 2-methyl-2-nitropropyl 4- methylbenzenesulfonate (316 mg, 1.16 mmol), and DMF (5 mL) was added Cs ₂ CO ₃ (753 mg, 2.31 mmol, 2 equiv.) and the resultant mixture was heated to 80 °C via micro`wave irradiation for 1 hour before cooling to room-temperature. The reaction mixture was heated to 80 °C via microwave irradiation for 6 hr resulting in the crude material, N-(2,6-dimethylpyrimidin-4-yl)-5- (2-methyl-5-(2-methyl-2-nitropropoxy)pyridin-4-yl)pyrazolo[1 ,5-a]pyridin-2-amine (230 mg, 45%). Step C.5-[5-(2-amino-2-methyl-propoxy)-2-methyl-4-pyridyl]-N-(2,6 - dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine .A mixture consisting of N-(2,6- dimethylpyrimidin-4-yl)-5-(2-methyl-5-(2-methyl-2-nitropropo xy)pyridin-4-yl)pyrazolo[1,5- a]pyridin-2-amine (220 mg, 0.492 mmol, 1 equiv.), MeOH (20 mL) and Pd/C (192 mg, 0.0980 mmol, 10%) was stirred at room temperature under H ₂ (45 psi) overnight. The reaction mixture was continued to heat at 35°C and stirred under H2 (45 psi) overnight. The suspension was 369

filtered through a pad of Celite® and the pad washed with MeOH (50 mL). The combined organic layers were concentrated to dryness under reduced pressure to give the crude product (170 mg). Of the crude product, 80 mg was purified by preparative HPLC BH using a Phenomenex Gemini-NX 80 x 40 mm x 3 µm column (eluent: 25% to 49% (v/v) CH ₃ CN and H2O with 0.05% NH3-H2O +10mM NH4HCO3) to afford product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound as a white solid (29.2 mg, 14%).MS (ESI): mass calcd. for C ₂₃ H ₂₇ N ₇ O, 417.2; m/z found, 418.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.38 (d, J = 7.6 Hz, 1H), 8.25 (s, 1H), 7.62 - 7.58 (m, 1H), 7.43 (br. s., 1H), 7.17 (s, 1H), 7.10 (s, 1H), 6.95 (dd, J = 1.6, 7.2 Hz, 1H), 6.57 (s, 1H), 3.82 (s, 2H), 2.61 (s, 3H), 2.56 (s, 3H), 2.46 (s, 3H), 1.17 (s, 6H). Example 360: N-[2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5- a]pyridin-5-yl]-6- methyl-3-pyridyl]oxy]-1,1-dimethyl-ethyl]acetamide. ino-2-methyl-propoxy)-2-methyl-4-pyridyl]-N-(2,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine (Example 359) (80 mg, 0.19 mmol, 1 equiv.), TEA (39 mg, 0.38 mmol), and DCM (2 mL), acetyl chloride (22.6 mg, 0.287 mmol, 1.5 equiv.) was added dropwise at 0°C stirred for 1 hr. The reaction mixture was quenched with slow addition of MeOH (2 mL). The reaction mixture was concentrated under reduced pressure to afford the crude product, which was purified by preparative HPLC BH using a Phenomenex Gemini-NX C1880 x 40 mm x 3 µm column (eluent: 24% to 46% (v/v) water (0.05% NH3-H2O + 10mM NH4HCO3)-ACN) to afford pure product, which was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound as a white solid (27.2 mg, 31%). MS (ESI): mass calcd. for C25H29N7O2, 459.2; m/z found, 460.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.37 (d, J = 7.6 Hz, 1H), 8.26 (s, 1H), 7.59 370

(d, J = 0.8 Hz, 1H), 7.47 (s, 1H), 7.15 (s, 1H), 7.07 (s, 1H), 6.91 (dd, J = 2.0, 7.2 Hz, 1H), 6.59 (s, 1H), 5.26 (s, 1H), 4.20 (s, 2H), 2.61 (s, 3H), 2.56 (s, 3H), 2.46 (s, 3H), 1.81 (s, 3H), 1.36 (s, 6H). Example 361: N-[2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5- a]pyridin-5-yl]-6- methyl-3-pyridyl]oxy]-1,1-dimethyl-ethyl]methanesulfonamide. mg, 19%) was prepared as described in Example 360, except methanesulfonyl chloride (2 equiv.) was used instead of acetyl chloride. MS (ESI): mass calcd. for C ₂₄ H ₂₉ N ₇ O ₃ S, 495.2; m/z found, 496.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.39 (d, J = 7.2 Hz, 1H), 8.25 (s, 1H), 7.59 (d, J = 0.8 Hz, 1H), 7.39 (br. s., 1H), 7.17 (s, 1H), 7.12 (s, 1H), 6.93 (dd, J = 2.0, 7.2 Hz, 1H), 6.59 (s, 1H), 4.44 (s, 1H), 4.06 (s, 2H), 2.96 (s, 3H), 2.61 (s, 3H), 2.57 (s, 3H), 2.46 (s, 3H), 1.40 (s, 6H). Example 362: 4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- prop-1-ynyl-3-pyridyl]amino]cyclohexanol. nopyrazolo[1,5-a]pyridin-5-yl)-6-chloropyridin-3- yl)carbamate. A mixture consisting of tert-butyl (6-chloro-4-iodopyridin-3-yl)carbamate (9.95 g, 371

28.1 mmol, 1 equiv.), Intermediate 14 (12.5 g, 33.7 mmol, 1.2 equiv.), Pd(dppf)Cl2 (1.0 g, 1.4 mmol, 0.05 equiv.), K3PO4 (17.9 g, 84.2 mmol, 3 equiv.), and 1,4-dioxane/H2O (200 mL, 4:1) under N ₂ atmosphere was stirred 3 h at 60°C.The reaction mixture was concentrated to dryness under reduced pressure to give the crude product, which was purified by FCC (eluent: petroleum ether: ethyl acetate) = 100/0 to 0/100) to yield the title compound, tert-butyl (4-(2- aminopyrazolo[1,5-a]pyridin-5-yl)-6-chloropyridin-3-yl)carba mate, as a yellow solid (10.5 g, crude). Step B. Tert-butyl (6-chloro-4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1 ,5- a]pyridin-5-yl)pyridin-3-yl)carbamate. A mixture consisting of tert-butyl (4-(2- aminopyrazolo[1,5-a]pyridin-5-yl)-6-chloropyridin-3-yl)carba mate (8.0 g, 22 mmol, 1 equiv.), 4- chloro-2,6-dimethylpyrimidine (3.8 g, 27 mmol, 1.2 equiv.), Pd(PPh3)4 (2.6 g, 2.2 mmol, 0.1 equiv.), Xantphos (2.6 g, 4.4 mmol, 0.2 equiv.), CsF (10 g, 67 mmol, 3 equiv.) and 1,4-dioxane (100 mL) was purged with N ₂ for 2 min. The resultant mixture was stirred at 100 °C for 3 hr before cooling to room-temperature. The reaction mixture was concentrated to dryness under reduced pressure to give the crude product, which was purified by FCC (eluent: petroleum ether: ethyl acetate) = 100/0 to 0/100) to yield the product, tert-butyl (6-chloro-4-(2-((2,6- dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyridin-5-yl)pyr idin-3-yl)carbamate, as a white solid (10.0 g, 68%). Step C. Tert-butyl (4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyri din-5- yl)-6-(prop-1-yn-1-yl)pyridin-3-yl)carbamate. A mixture consisting of tert-butyl (6-chloro-4-(2- ((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyridin-5- yl)pyridin-3-yl)carbamate (3.0 g, 6.4 mmol, 1 equiv.), tributyl(prop-1-yn-1-yl)stannane (2.5 g, 7.7 mmol, 1.2 equiv.), Pd(PPh3)4 (744 mg, 0.644 mmol, 0.1 equiv.), LiCl (819 mg, 19.3 mmol, 3 equiv.) and DMF (30 mL) was purged with N2 for 2 min. The resultant mixture was stirred at 90 °C overnight before cooling to room temperature. The reaction mixture was concentrated to dryness under reduced pressure to give the crude product, which was purified by FCC (eluent: petroleum ether: ethyl acetate) = 100/0 to 0/100) to yield product, tert-butyl (4-(2-((2,6-dimethylpyrimidin-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-(prop-1-yn-1-yl)pyri din-3-yl)carbamate, as a yellow solid (4.0 g, 75%). 372

Step D.5-(5-amino-2-(prop-1-yn-1-yl)pyridin-4-yl)-N-(2,6-dimethyl pyrimidin-4- yl)pyrazolo[1,5-a]pyridin-2-amine.To a solution consisting of tert-butyl (5-(5-fluoro-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)carbamate (4.0 g, 8.5 mmol, 1 equiv.) was added TFA/DCM (5 mL, 1:1). The resultant mixture was stirred at room-temperature overnight.The reaction mixture was concentrated to dryness under reduced pressure to give the crude product, then adjusted pH = 7 with saturated aqueous NaHCO ₃ . The reaction mixture was concentrated to dryness under reduced pressure to give the crude product 5-(5-amino-2-(prop-1-yn-1-yl)pyridin- 4-yl)-N-(2,6-dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2 -amine (2.5 g, crude). Step E.4-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a ]pyridin-5-yl)-6- (prop-1-yn-1-yl)pyridin-3-yl)amino)cyclohexan-1-ol. A solution consisting of 5-(5-amino-2- (prop-1-yn-1-yl)pyridin-4-yl)-N-(2,6-dimethylpyrimidin-4-yl) pyrazolo[1,5-a]pyridin-2-amine (500 mg, 1.35 mmol, 1 equiv.), 4-hydroxycyclohexanone (231 mg, 2.03 mmol, 1.5 equiv.), Ti(Oi-Pr)4 (769 mg, 2.71 mmol, 2 equiv.) in toluene (3 mL) was stirred for 0.5 hr at 120 °C via microwave. Then sodium cyanoborohydride (255 mg, 4.06 mmol, 3 equiv.) was adding to the mixture and it was stirred for 0.5 hr at 120 °C via microwave. The mixture was purified by preparative HPLC with a Phenomenex Gemini-NX 80 x 40 mm x 3 um column (eluent: 25% to 51% (v/v) CH ₃ CN and H ₂ O with 0.05% NH ₃ ) to afford product. the product was suspended in water (10 mL), the mixture frozen using dry ice/EtOH, and then lyophilized to dryness to afford the product, 4-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]p yridin-5-yl)-6-(prop- 1-yn-1-yl)pyridin-3-yl)amino)cyclohexan-1-ol, as a yellow solid (60 mg, 9%). Step F.4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a ]pyridin-5-yl]-6- prop-1-ynyl-3-pyridyl]amino]cyclohexanol. The material 4-((4-(2-((2,6-dimethylpyrimidin-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-(prop-1-yn-1-yl)pyri din-3-yl)amino)cyclohexan-1-ol (60 mg, 0.13 mmol) was further purified by SFC-11 over DAICEL CHIRALCEL OD 250 mm x 50 mm x 10 µm (eluent: 55% to 55% (v/v) 0.1% NH3-H2O /EtOH). The pure fractions were collected and the volatiles were removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/EtOH, and then lyophilized to dryness to afford the product, 4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-prop-1- ynyl-3-pyridyl]amino]cyclohexanol (26.4 mg, 41%). MS (ESI): mass calcd. for C27H29N7O, 467.2; m/z found, 468.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.21 (s, 1H), 8.60 (d, J = 373

7.2 Hz, 1H), 8.05 (s, 1H), 7.62 (d, J = 1.2 Hz, 1H), 7.12 (s, 1H), 7.02 (s, 1H), 6.84 (s, 1H), 6.79 (dd, J = 2.0, 7.2 Hz, 1H), 4.85 (d, J = 7.6 Hz, 1H), 4.36 (d, J = 3.6 Hz, 1H), 3.71 - 3.64 (m, 1H), 3.51 - 3.42 (m, 1H), 2.46 (s, 3H), 2.30 (s, 3H), 2.02 (s, 3H), 1.65 - 1.57 (m, 4H), 1.56 - 1.47 (m, 4H). Example 363: (*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(1,1-dioxothiolan- 3-yl)methoxy]-2- methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. hyl)tetrahydrothiophene 1,1-dioxide. To a mixture consisting of tetrahydrothiophene-3-carboxylic acid 1,1-dioxide (300 mg, 1.83 mmol, 1 equiv.) and THF (10 mL) was added BH ₃ -THF (9.1 mL, 9.1 mmol, 1 M.5 equiv.) at 0 °C. The reaction mixture was stirred at room temperature for 4 hr. The resultant mixture was added dropwise MeOH (15 mL) at 0 °C, and then the mixture was stirred for 1 hr at room temperature. The reaction mixture was concentrated to dryness under reduced pressure to give the product, 3- (hydroxymethyl)tetrahydrothiophene 1,1-dioxide, as a brown oil (240 mg, crude). Step B. (1,1-dioxidotetrahydrothiophen-3-yl)methyl 4-methylbenzenesulfonate. A mixture consisting of 3-(hydroxymethyl)tetrahydrothiophene 1,1-dioxide (240 mg, 1.60 mmol, 1 equiv.), 4-methylbenzene-1-sulfonyl chloride (396 mg, 2.08 mmol, 1.3 equiv.), N,N- dimethylpyridin-4-amine (351 mg, 2.88 mmol, 1.8 equiv.) and DCM (10 mL) was stirred at room temperature for 16h.The reaction mixture was concentrated to dryness under reduced pressure to give the crude product, which was purified by FCC (eluent: petroleum ether: ethyl acetate = 1:0 to 0:1) to afford the title compound, (1,1-dioxidotetrahydrothiophen-3-yl)methyl 4- methylbenzenesulfonate, as a white solid (290 mg, 60%). Step C. (*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(1,1-dioxothiolan- 3-yl)methoxy]-2- methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. A mixture consisting of Intermediate 16 (260 374

mg, 0.751 mmol, 1 equiv.), (1,1-dioxidotetrahydrothiophen-3-yl)methyl 4- methylbenzenesulfonate (274 mg, 0.901 mmol, 1.2 equiv.), Cs2CO3 (734 mg, 2.25 mmol, 3 equiv.) and DMF (10 mL) was stirred at 110°C for 1 hr via microwave. The reaction mixture was filtered and purified by preparative HPLC using a Phenomenex Gemini-NX C1875 x 30 mm x 3 µm (eluent: 25% to 55% (v/v) water (0.05% NH3-H2O +10mM NH4HCO3)-ACN to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the material N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(1,1- dioxothiolan-3-yl)methoxy]-2-methyl-4-pyridyl]pyrazolo[1,5-a ]pyridin-2-amine as a white solid (140 mg, 39%). The material was further purified by SFC over AD 250 mm x 30 mm, 10 µm (eluent: 55% to 55% (v/v) supercritical CO ₂ in EtOH and H ₂ O with 0.1% NH ₃ ). The first eluted isomer was designated as *R isomer. The pure fractions were collected and the volatiles were removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (39.1 mg, 26%) as a white solid. MS (ESI): mass calcd. for C ₂₄ H ₂₆ N ₆ O ₃ S, 478.2; m/z found, 479.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.22 (s, 1H), 8.59 (d, J = 7.2 Hz, 1H), 8.34 (s, 1H), 7.80 (s, 1H), 7.37 (s, 1H), 7.07 - 6.98 (m, 2H), 6.88 (br. s., 1H), 4.19 (d, J = 6.0 Hz, 2H), 3.27 - 3.16 (m, 2H), 3.12 - 3.03 (m, 1H), 3.00 - 2.93 (m, 1H), 2.90 - 2.79 (m, 1H), 2.47 (s, 3H), 2.46 (s, 3H), 2.31 (s, 3H), 2.28 - 2.21 (m, 1H), 1.98 - 1.87 (m, 1H). Example 364: (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(1,1-dioxothiolan- 3-yl)methoxy]-2- methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. hyl)tetrahydrothiophene 1,1-dioxide. To a mixture consisting of tetrahydrothiophene-3-carboxylic acid 1,1-dioxide (300 mg, 1.83 mmol, 1 equiv.) and THF (10 mL) was added BH3-THF (9.1 mL, 9.1 mmol, 1 M.5 equiv.) at 0 °C. The reaction mixture was stirred at room temperature for 4 hr. The resultant mixture was added dropwise MeOH (15 mL) 375

at 0 °C, and then the mixture was stirred for 1 hr at room temperature. The reaction mixture was concentrated to dryness under reduced pressure to give the product, 3- (hydroxymethyl)tetrahydrothiophene 1,1-dioxide, as a brown oil (240 mg, crude). Step B. (1,1-dioxidotetrahydrothiophen-3-yl)methyl 4-methylbenzenesulfonate. A mixture consisting of 3-(hydroxymethyl)tetrahydrothiophene 1,1-dioxide (240 mg, 1.60 mmol, 1 equiv.), 4-methylbenzene-1-sulfonyl chloride (396 mg, 2.08 mmol, 1.3 equiv.), N,N- dimethylpyridin-4-amine (351 mg, 2.88 mmol, 1.8 equiv.) and DCM (10 mL) was stirred at room temperature for 16h.The reaction mixture was concentrated to dryness under reduced pressure to give the crude product, which was purified by FCC (eluent: petroleum ether: ethyl acetate = 1:0 to 0:1) to afford the title compound, (1,1-dioxidotetrahydrothiophen-3-yl)methyl 4- methylbenzenesulfonate, as a white solid (290 mg, 60%). Step C. (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(1,1-dioxothiolan- 3-yl)methoxy]-2- methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. A mixture consisting of Intermediate 16 (260 mg, 0.751 mmol, 1 equiv.), (1,1-dioxidotetrahydrothiophen-3-yl)methyl 4- methylbenzenesulfonate (274 mg, 0.901 mmol, 1.2 equiv.), Cs2CO3 (734 mg, 2.25 mmol, 3 equiv.) and DMF (10 mL) was stirred at 110°C for 1 hr via microwave. The reaction mixture was filtered and purified by preparative HPLC using a Phenomenex Gemini-NX C1875 x 30 mm x 3 µm (eluent: 25% to 55% (v/v) water (0.05% NH3-H2O +10mM NH4HCO3)-ACN to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the material N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(1,1- dioxothiolan-3-yl)methoxy]-2-methyl-4-pyridyl]pyrazolo[1,5-a ]pyridin-2-amine, as a white solid (140 mg, 39%). The material was further purified by SFC over AD 250 mm x 30 mm, 10 µm (eluent: 55% to 55% (v/v) supercritical CO ₂ in EtOH and H ₂ O with 0.1% NH ₃ ). The second eluted isomer was designated as *S isomer. The pure fractions were collected and the volatiles were removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (37.6 mg, 25%) as a white solid. MS (ESI): mass calcd. for C ₂₄ H ₂₆ N ₆ O ₃ S, 478.2; m/z found, 479.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.22 (s, 1H), 8.59 (d, J = 6.8 Hz, 1H), 8.34 (s, 1H), 7.80 (s, 1H), 7.37 (s, 1H), 7.07 - 6.97 (m, 2H), 6.87 (br. s., 1H), 4.19 (d, J = 6.0 Hz, 2H), 3.27 - 376

3.16 (m, 2H), 3.11 - 3.04 (m, 1H), 2.99 - 2.93 (m, 1H), 2.88 - 2.81 (m, 1H), 2.47 (s, 3H), 2.46 (s, 3H), 2.30 (s, 3H), 2.28 - 2.21 (m, 1H), 1.98 - 1.86 (m, 1H). Example 365: (4S)-4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxymethyl]-1-methyl-imidazolidin-2-one. methyl)-1-methylimidazolidin-2-one. To a mixture of (S)-benzyl 1-methyl-2-oxoimidazolidine-4-carboxylate (340 mg, 1.45 mmol, 1 equiv.), CaCl2 (96.7 mg, 0.871 mmol, 0.6 equiv.) and EtOH (10 mL) at 0°C was added NaBH4 (66 mg, 1.7 mmol, 1.2 equiv.).The mixture was stirred at room temperature for 12 hr. The ethanol was removed under vacuum and the residue was dissolved in sat. aq. NH ₄ Cl (5 mL). The mixture was extracted with EtOAc (20 mL x 3) and the product was detected in the aqueous phase. The aqueous phase was frozen using dry ice/ethanol, and then lyophilized to dryness to get the crude product. To the crude product was added MeOH (5 mL) and MeCN (100 mL) to remove salt. The mixture was filtered then concentrated to give the compound (S)-4-(hydroxymethyl)-1-methylimidazolidin-2- one as a colorless oil (160 mg, 85%). Step B. (S)-(1-methyl-2-oxoimidazolidin-4-yl)methyl 4-methylbenzenesulfonate. A mixture consisting of (S)-4-(hydroxymethyl)-1-methylimidazolidin-2-one (150 mg, 1.15 mmol, 1 equiv.), 4-methylbenzene-1-sulfonyl chloride (264 mg, 1.38 mmol, 1.2 equiv.), N,N- dimethylpyridin-4-amine (211 mg, 1.73 mmol, 1.5 equiv.) and DCM (10 mL) was stirred at room temperature for 16h.The reaction mixture was concentrated to dryness under reduced pressure to give the crude product, which was purified by FCC (eluent: petroleum ether: ethyl acetate = 1:0 to 0:1) to afford the title compound (S)-(1-methyl-2-oxoimidazolidin-4-yl)methyl 4-methylbenzenesulfonate as a white solid (120 mg, 36%). 377

Step C. (4S)-4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxymethyl]-1-methyl-imidazolidin-2-one. A mixture consisting of Intermediate 16 (120 mg, 0.346 mmol, 1 equiv.), (S)-(1-methyl-2-oxoimidazolidin-4-yl)methyl 4-methylbenzenesulfonate (98.5 mg, 0.346 mmol, 1.2 equiv.), Cs ₂ CO ₃ (339 mg, 1.04 mmol) and DMF (3 mL) was stirred at 110 °C for 1h via microwave. The reaction mixture was filtered and purified by preparative HPLC using a Phenomenex Gemini-NX C18150 x 30 mm x 5 µm (eluent: 25% to 55% (v/v) water (0.05% NH ₃ -H ₂ O)-ACN to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound as a white solid. The compound was further purified by SFC over AD CHIRALPAK AS 250 mm x 30 mm, 10 µm (eluent: 40% to 40% (v/v) supercritical 0.1% NH3-H2O EtOH). The pure fractions were collected and the volatiles were removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound, (4S)- 4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-methyl-3- pyridyl]oxymethyl]-1-methyl-imidazolidin-2-one, as a white solid (19.7 mg, 12%).MS (ESI): mass calcd. for C ₂₄ H ₂₆ N ₈ O ₂ , 458.2; m/z found, 459.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.21 (s, 1H), 8.53 (d, J = 7.6 Hz, 1H), 8.35 (s, 1H), 7.86 (d, J = 1.2 Hz, 1H), 7.39 (s, 1H), 7.04 (dd, J = 2.0, 7.2 Hz, 1H), 7.01 (br. s., 1H), 6.92 (br. s., 1H), 6.64 (s, 1H), 4.12 - 4.03 (m, 2H), 3.95 - 3.87 (m, 1H), 3.49 - 3.43 (m, 1H), 3.21 - 3.15 (m, 1H), 2.56 (s, 3H), 2.48 - 2.45 (m, 6H), 2.30 (s, 3H). Example 366: 5-[2-methyl-5-[[(1S,5R, 7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl]oxy]-4- pyridyl]-N-[6-(trifluoromethyl)-2-pyridyl]pyrazolo[1,5-a]pyr idin-2-amine. 8

The title compound (21.9 mg, 10%) was prepared as described in Example 116, Step A-B except 2-bromo-6-(trifluoromethyl)pyridine (117 mg, 0.52 mmol) was used instead of 4-bromo- 1-(difluoromethyl)-1H-pyrazole in Step A, and HCl in 1,4-dioxane was used instead of TFA in Step B. MS (ESI): mass calcd. for C ₂₆ H ₂₅ F ₃ N ₆ O ₂ , 510.2; m/z found, 511.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.37 (s, 1H), 8.55 (d, J = 7.2 Hz, 1H), 8.28 (s, 1H), 8.13 (d, J = 1.2 Hz, 1H), 7.92 - 7.83 (m, 1H), 7.53 (d, J = 8.4 Hz, 1H), 7.42 (s, 1H), 7.26 (d, J = 7.2 Hz, 1H), 7.16 (dd, J = 2.0, 7.2 Hz, 1H), 6.91 (s, 1H), 4.75 - 4.61 (m, 1H), 3.65 - 3.50 (m, 4H), 2.95 (d, J = 7.2 Hz, 2H), 2.46 (s, 3H), 2.38 - 2.23 (m, 2H), 1.81 - 1.64 (m, 2H). ¹⁹ F NMR (376 MHz, DMSO-d6) δ -67.06 (s, 3F). Example 367: N-methyl-6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3 .3.1]nonan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridine -2-carboxamide. g, 10%) was prepared as described in Example 116, Step A-B except 6-bromo-N-methylpicolinamide (152 mg, 0.71 mmol) was used instead of 4-bromo-1- (difluoromethyl)-1H-pyrazole in Step A. MS (ESI): mass calcd. for C ₂₇ H ₂₉ N ₇ O ₃ , 499.2; m/z found, 500.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.00 (s, 1H), 8.55 (d, J = 7.2 Hz, 1H), 8.30 (s, 1H), 8.15 (q, J = 4.4 Hz, 1H), 8.05 (s, 1H), 7.84 - 7.75 (m, 1H), 7.48 (d, J = 8.4 Hz, 1H), 7.44 (d, J = 7.2 Hz, 1H), 7.39 (s, 1H), 7.13 (dd, J = 1.6, 6.8 Hz, 1H), 6.84 (s, 1H), 4.74 - 4.61 (m, 1H), 3.60 - 3.51 (m, 4H), 2.97 - 2.88 (m, 5H), 2.47 (s, 3H), 2.36 - 2.24 (m, 2H), 1.75 - 1.61 (m, 2H). Example 368: 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]- N-pyridazin-4-yl-pyrazolo[1,5-a]pyridin-2-amine. 379

0 mg, 9%) was prepared as described in Example 116, Step A-B except 4-bromopyridazine (113 mg, 0.71 mmol) was used instead of 4-bromo-1- (difluoromethyl)-1H-pyrazole in Step A. MS (ESI): mass calcd. for C24H25N7O2, 443.2; m/z found, 444.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.05 (s, 1H), 9.19 (d, J = 2.4 Hz, 1H), 8.84 (d, J = 6.0 Hz, 1H), 8.63 (d, J = 7.6 Hz, 1H), 8.30 (s, 1H), 8.02 (s, 1H), 7.87 (dd, J = 3.2, 6.0 Hz, 1H), 7.38 (s, 1H), 7.16 (dd, J = 2.0, 7.6 Hz, 1H), 6.27 (s, 1H), 4.76 - 4.59 (m, 1H), 3.63 - 3.44 (m, 4H), 2.98 - 2.87 (m, 2H), 2.46 (s, 3H), 2.36 - 2.22 (m, 2H), 1.75 - 1.56 (m, 2H). Example 369: N-(2-hydroxyethyl)-6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-yl]amino]pyridine-3- carboxamide. -((4-(2-((5-((2-hydroxyethyl)carbamoyl)pyridin-2- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)o xy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate. A solution consisting of tert-butyl (1R,5S,7s)-7-((4-(2- ((5-(methoxycarbonyl)pyridin-2-yl)amino)pyrazolo[1,5-a]pyrid in-5-yl)-6-methylpyridin-3- yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonane-9-carboxylate (Example 370, Step A, 100 mg, 0.166 mmol), 2-aminoethanol (133 mg, 2.18 mmol), EtONa (14 mg, 0.20 mmol), and EtOH (3 mL) 380

was stirred overnight at 65 °C. The reaction mixture was directly concentrated to afford the crude product (150 mg, crude). Step B: N-(2-hydroxyethyl)-6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-yl]amino]pyridine-3- carboxamide. The title compound (11 mg, 14%) was prepared as described in Example 116, Step B except HCl in 1,4-dioxane was used instead of TFA and tert-butyl (1R,5S,7s)-7-((4-(2- ((5-((2-hydroxyethyl)carbamoyl)pyridin-2-yl)amino)pyrazolo[1 ,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonane-9-ca rboxylate was used instead of tert-butyl (1R,5S,7s)-7-((4-(2-((1-(difluoromethyl)-1H-pyrazol-4-yl)ami no)pyrazolo[1,5- a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)-3-oxa-9-azabicyclo [3.3.1]nonane-9-carboxylate. MS (ESI): mass calcd. for C28H31N7O4, 529.2; m/z found, 530.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.20 (s, 1H), 8.74 (d, J = 2.0 Hz, 1H), 8.55 (d, J = 7.2 Hz, 1H), 8.37 (t, J = 5.2 Hz, 1H), 8.29 (s, 1H), 8.06 (dd, J = 2.0, 8.8 Hz, 1H), 8.04 - 7.99 (m, 1H), 7.38 (s, 1H), 7.35 (d, J = 8.8 Hz, 1H), 7.13 (dd, J = 2.0, 7.2 Hz, 1H), 6.85 (s, 1H), 4.76 (t, J = 5.2 Hz, 1H), 4.73 - 4.64 (m, 1H), 3.66 - 3.56 (m, 4H), 3.53 - 3.49 (m, 2H), 3.32 - 3.31 (m, 2H), 3.10 - 3.03 (m, 2H), 2.46 (s, 3H), 2.38 - 2.28 (m, 2H), 1.82 - 1.69 (m, 2H). Example 370: 6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nona n-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridine-3-carboxy lic acid. 7s)-7-((4-(2-((5-(methoxycarbonyl)pyridin-2- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)o xy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate. The title compound (750 mg, 96%) was prepared as 381

described in Example 116, Step A except methyl 6-bromonicotinate (464 mg, 2.15 mmol) was used instead of 4-bromo-1-(difluoromethyl)-1H-pyrazole. Step B: 6-((5-(5-(((1R,5S,7s)-9-(tert-butoxycarbonyl)-3-oxa-9-azabic yclo[3.3.1]nonan-7- yl)oxy)-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)ami no)nicotinic acid. LiOH• H ₂ O (42 mg, 1.0 mmol) was added to a solution consisting of tert-butyl (1R,5S,7s)-7-((4-(2-((5- (methoxycarbonyl)pyridin-2-yl)amino)pyrazolo[1,5-a]pyridin-5 -yl)-6-methylpyridin-3-yl)oxy)- 3-oxa-9-azabicyclo[3.3.1]nonane-9-carboxylate (120 mg, 0.200 mmol), MeOH (2 mL), and THF (1 mL). The reaction mixture was stirred overnight at 50 °C. The reaction mixture was directly concentrated to afford the crude compound (150 mg, crude). Step C.6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]no nan-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridine-3-carboxy lic acid. The title compound (10 mg, 11%) was prepared as described in Example 116, Step B except HCl in 1,4-dioxane was used instead of TFA and 6-((5-(5-(((1R,5S,7s)-9-(tert-butoxycarbonyl)-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl)oxy)-2-methylpyridin-4-yl)pyrazo lo[1,5-a]pyridin-2- yl)amino)nicotinic acid was used instead of tert-butyl (1R,5S,7s)-7-((4-(2-((1-(difluoromethyl)- 1H-pyrazol-4-yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylp yridin-3-yl)oxy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate. MS (ESI): mass calcd. for C ₂₆ H ₂₆ N ₆ O ₄ , 486.2; m/z found, 487.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.48 (s, 1H), 9.92 - 9.65 (m, 2H), 8.78 (d, J = 2.0 Hz, 1H), 8.62 (d, J = 7.2 Hz, 1H), 8.45 (s, 1H), 8.21 (s, 1H), 8.09 (dd, J = 2.4, 8.8 Hz, 1H), 7.83 (s, 1H), 7.38 (d, J = 8.8 Hz, 1H), 7.24 (dd, J = 1.6, 7.2 Hz, 1H), 6.95 (s, 1H), 4.98 - 4.88 (m, 1H), 4.00 - 3.74 (m, 4H), 3.67 - 3.51 (m, 2H), 2.69 - 2.62 (m, 5H), 2.20 - 2.11 (m, 2H) Example 371: N-(2-hydroxy-2-methyl-propyl)-6-[[5-[2-methyl-5-[[(1S,5R,7s) -3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-yl]amino]pyridine-3- carboxamide. 382

((4-(2-((5-((2-hydroxy-2- methylpropyl)carbamoyl)pyridin-2-yl)amino)pyrazolo[1,5-a]pyr idin-5-yl)-6-methylpyridin-3- yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonane-9-carboxylate. To a solution of 6-((5-(5-(((1R,5S,7s)- 9-(tert-butoxycarbonyl)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl) oxy)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)amino)nicotinic acid (Example 370, Step B, 100 mg, 0.170 mmol) and 1-amino-2-methylpropan-2-ol (7.6 mg, 0.085 mmol) in DMF (3 mL) was added DIEA (33.0 mg, 0.256 mmol) and HATU (64.8 mg, 0.170 mmol). The mixture was stirred at room temp for 16 h. The reaction mixture was filtered and the filtrate was purified by preparative HPLC using a YMC-Triart Prep C18250 x 50mm x 10um column (eluent: 36% to 66% (v/v) CH3CN and H ₂ O with 0.04% NH ₃ ). The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (46 mg, 82%) as a white solid. Step B: N-(2-hydroxy-2-methyl-propyl)-6-[[5-[2-methyl-5-[[(1S,5R,7s) -3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-yl]amino]pyridine-3- carboxamide. The title compound (34 mg, 88%) was prepared as described in Example 116, Step B except tert-butyl (1R,5S,7s)-7-((4-(2-((5-((2-hydroxy-2-methylpropyl)carbamoyl )pyridin- 2-yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl )oxy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate was used instead of tert-butyl (1R,5S,7s)-7-((4-(2-((1- (difluoromethyl)-1H-pyrazol-4-yl)amino)pyrazolo[1,5-a]pyridi n-5-yl)-6-methylpyridin-3- yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonane-9-carboxylate. MS (ESI): mass calcd. for C ₃₀ H ₃₅ N ₇ O ₄ , 557.3; m/z found, 558.3 [M+H]+. ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.75 (d, J = 2.0 Hz, 1H), 8.34 (d, J = 7.6 Hz, 1H), 8.23 (s, 1H), 8.07 (dd, J = 2.4, 8.8 Hz, 1H), 7.91 (d, J = 1.2 Hz, 1H), 7.74 (s, 1H), 7.48 (d, J = 8.8 Hz, 1H), 7.21 (s, 1H), 7.12 (dd, J = 2.0, 7.2 Hz, 1H), 6.59 - 6.51 (m, 2H), 4.63 - 4.58 (m, 1H), 3.78 - 3.71 (m, 4H), 3.50 (d, J = 6.0 Hz, 2H), 3.05 (d, J = 7.6 Hz, 2H), 2.56 (s, 3H), 2.39 - 2.32 (m, 2H), 2.02 - 1.95 (m, 2H), 1.32 (s, 6H). 383

Example 372: 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]- N-(2-methylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. %) was prepared as described in Example 116, Step A-B except 4-chloro-2-methylpyrimidine (99 mg, 0.77 mmol) was used instead of 4-bromo-1- (difluoromethyl)-1H-pyrazole in Step A. MS (ESI): mass calcd. for C25H27N7O2, 457.2; m/z found, 458.3 [M+H] ⁺ . ¹ H NMR (400 MHz, CD ₃ OD) δ 8.41 (d, J = 7.2 Hz, 1H), 8.21 (d, J = 6.0 Hz, 1H), 8.17 (s, 1H), 8.11 (d, J = 0.8 Hz, 1H), 7.41 (s, 1H), 7.22 - 7.15 (m, 2H), 6.87 (s, 1H), 4.73 - 4.66 (m, 1H), 3.84 - 3.68 (m, 4H), 2.98 (d, J = 6.8 Hz, 2H), 2.56 (s, 3H), 2.53 (s, 3H), 2.43 - 2.33 (m, 2H), 2.01 - 1.93 (m, 2H). Example 373: 6-[[5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nona n-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-N-(tetrahydropyra n-4-ylmethyl)pyridine-3- carboxamide. -methyl-4-(2-((5-(((tetrahydro-2H-pyran-4- yl)methyl)carbamoyl)pyridin-2-yl)amino)pyrazolo[1,5-a]pyridi n-5-yl)pyridin-3-yl)oxy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate. A mixture consisting of tert-butyl (1R,5S,7s)-7-((4-(2- 384

((5-(methoxycarbonyl)pyridin-2-yl)amino)pyrazolo[1,5-a]py ridin-5-yl)-6-methylpyridin-3- yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonane-9-carboxylate (Example 370, Step A, 70 mg, 0.12 mmol), (tetrahydro-2H-pyran-4-yl)methanamine (27 mg, 0.23 mmol), DIEA (60 mg, 0.46 mmol), HATU (32 mg, 0.23 mmol) and DMF (3 mL ) was stirred at 25 °C for 4 h before cooling to room temperature. The reaction mixture was poured onto 40 mL of water. During this period, white precipitate was formed. It was collected by filtration and air-dried. The precipitate was concentrated under reduced pressure to give the title product (70 mg, 87%). Step B: 6-[[5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nona n-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-N-(tetrahydropyra n-4-ylmethyl)pyridine-3- carboxamide. The title compound (5.7 mg, 9%) was prepared as described in Example 116, Step B except tert-butyl (1R,5S,7s)-7-((6-methyl-4-(2-((5-(((tetrahydro-2H-pyran-4- yl)methyl)carbamoyl)pyridin-2-yl)amino)pyrazolo[1,5-a]pyridi n-5-yl)pyridin-3-yl)oxy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate (70 mg, 0.10 mmol) was used instead of tert-butyl (1R,5S,7s)-7-((4-(2-((1-(difluoromethyl)-1H-pyrazol-4-yl)ami no)pyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonane-9-ca rboxylate. MS (ESI): mass calcd. for C ₃₂ H ₃₇ N ₇ O ₄ , 583.3; m/z found, 584.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CD ₃ OD) δ 8.71 (d, J = 2.0 Hz, 1H), 8.39 (d, J = 7.2 Hz, 1H), 8.16 (s, 1H), 8.07 - 8.02 (m, 2H), 7.41 (s, 1H), 7.38 (d, J = 8.8 Hz, 1H), 7.14 (dd, J = 2.0, 7.6 Hz, 1H), 6.80 (s, 1H), 4.75 - 4.67 (m, 1H), 3.96 (dd, J = 2.8, 10.8 Hz, 2H), 3.88 - 3.75 (m, 4H), 3.46 - 3.37 (m, 2H), 3.28 (d, J = 6.8 Hz, 2H), 3.17 (d, J = 6.4 Hz, 2H), 2.53 (s, 3H), 2.48 - 2.39 (m, 2H), 2.12 - 2.05 (m, 2H), 1.97 - 1.84 (m, 1H), 1.74 - 1.66 (m, 2H), 1.40 - 1.27 (m, 2H). Example 374: 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]- N-[5-(trifluoromethyl)-2-pyridyl]pyrazolo[1,5-a]pyridin-2-am ine. 85

The title compound (22 mg, 18%) was prepared as described in Example 116, Step A-B except 2-bromo-5-(trifluoromethyl)pyridine (194 mg, 0.86 mmol) was used instead of 4-bromo- 1-(difluoromethyl)-1H-pyrazole in Step A, and HCl in 1,4-dioxane was used instead of TFA in Step B. MS (ESI): mass calcd. for C ₂₆ H ₂₅ F ₃ N ₆ O ₂ , 510.2; m/z found, 511.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.46 (s, 1H), 8.59 - 8.55 (m, 2H), 8.30 (s, 1H), 8.03 (d, J = 0.8 Hz, 1H), 7.96 (dd, J = 2.0, 8.8 Hz, 1H), 7.45 (d, J = 8.8 Hz, 1H), 7.37 (s, 1H), 7.14 (dd, J = 1.6, 6.8 Hz, 1H), 6.89 (s, 1H), 4.72 - 4.64 (m, 1H), 3.60 - 3.49 (m, 4H), 2.93 (d, J = 8.0 Hz, 2H), 2.46 (s, 3H), 2.34 - 2.25 (m, 2H), 1.70 - 1.62 (m, 2H) 19F NMR (376 MHz, DMSO-d6) δ -59.60 (s, 3F) Example 375: 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4- yl)-N-(5-(trifluoromethyl)pyrazin-2-yl)pyrazolo[1,5-a]pyridi n-2-amine. mg, 38%) was prepared as described in Example 116, Step A-B except 2-chloro-5-(trifluoromethyl)pyrazine (173 mg, 0.95 mmol) was used instead of 4-bromo- 1-(difluoromethyl)-1H-pyrazole in Step A. MS (ESI): mass calcd. for C ₂₅ H ₂₄ F ₃ N ₇ O ₂ , 511.2; m/z found, 512.3 [M+H] ⁺ . ¹ H NMR (400 MHz, CD3OD) δ 8.63 (s, 1H), 8.57 (s, 1H), 8.43 (d, J = 7.2 Hz, 1H), 8.17 (s, 1H), 8.12 - 8.08 (m, 1H), 7.41 (s, 1H), 7.21 (dd, J = 1.6, 7.2 Hz, 1H), 6.96 (s, 1H), 4.73 - 4.65 (m, 1H), 3.83 - 3.76 (m, 2H), 3.74 - 3.68 (m, 2H), 2.98 (d, J = 6.8 Hz, 2H), 2.53 (s, 3H), 2.43 - 2.32 (m, 2H), 2.01 - 1.92 (m, 2H) ¹⁹ F NMR (376 MHz, DMSO-d6) δ -64.92 (s, 3F). Example 376: 6-[[5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nona n-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridine-3-carboxa mide. 386

7s)-7-((4-(2-((5-carbamoylpyridin-2-yl)amino)pyrazolo[1,5- a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)-3-oxa-9-azabicyclo [3.3.1]nonane-9-carboxylate. To a solution of 6-((5-(5-(((1R,5S,7s)-9-(tert-butoxycarbonyl)-3-oxa-9-azabic yclo[3.3.1]nonan-7- yl)oxy)-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)ami no)nicotinic acid (Example 370, Step B, 80 mg, 0.14 mmol), ammonia hydrochloride (15 mg, 0.27 mmol), and HATU (104 mg, 0.273 mmol) in DMF (2 mL) was added DIEA (106 mg, 0.818 mmol). The mixture was stirred at room temperature overnight. The reaction mixture was purified by preparative HPLC DG with Phenomenex Gemini-NX 150 X 30mm X 5um (eluent: 15% to 37% (v/v) CH3CN and aqueous HCl (0.006 N)). The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (102 mg) as a yellow solid. Step B: 6-[[5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nona n-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridine-3-carboxa mide. The title compound (35 mg, 53%) was prepared as described in Example 116, Step B except tert-butyl (1R,5S,7s)-7-((4- (2-((5-carbamoylpyridin-2-yl)amino)pyrazolo[1,5-a]pyridin-5- yl)-6-methylpyridin-3-yl)oxy)-3- oxa-9-azabicyclo[3.3.1]nonane-9-carboxylate (80 mg, 0.14 mmol) was used instead of tert-butyl (1R,5S,7s)-7-((4-(2-((1-(difluoromethyl)-1H-pyrazol-4-yl)ami no)pyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonane-9-ca rboxylate and HCl in 1,4-dioxane was used instead of TFA. MS (ESI): mass calcd. for C26H27N7O3, 485.2; m/z found, 486.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.23 (s, 1H), 8.76 (d, J = 1.6 Hz, 1H), 8.56 (d, J = 7.6 Hz, 1H), 8.30 (s, 1H), 8.07 (dd, J = 2.4, 8.8 Hz, 1H), 8.03 (d, J = 1.2 Hz, 1H), 7.89 (br. s., 1H), 7.38 (s, 1H), 7.34 (d, J = 8.8 Hz, 1H), 7.29 (br. s., 1H), 7.12 (dd, J = 2.0, 7.2 Hz, 1H), 6.87 (s, 1H), 4.73 - 4.63 (m, 1H), 3.65 - 3.47 (m, 4H), 2.98 - 2.88 (m, 2H), 2.46 (s, 3H), 2.36 - 2.23 (m, 2H), 1.72 - 1.61 (m, 2H) 387

Example 377: 6-[[5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nona n-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-N-propyl-pyridine -3-carboxamide. 3%) was prepared as described in Example 371, except propan-1-amine (25 mg, 0.43 mmol) was used instead of 1-amino-2-methylpropan-2-ol in Step A. MS (ESI): mass calcd. for C29H33N7O3, 527.3; m/z found, 528.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.20 (s, 1H), 8.73 (d, J = 2.4 Hz, 1H), 8.55 (d, J = 7.2 Hz, 1H), 8.36 (t, J = 5.2, 1H), 8.29 (s, 1H), 8.08 - 7.99 (m, 2H), 7.38 (s, 1H), 7.35 (d, J = 8.8 Hz, 1H), 7.13 (dd, J = 2.0, 7.2 Hz, 1H), 6.85 (s, 1H), 4.75 - 4.64 (m, 1H), 3.76 - 3.53 (m, 4H), 3.23 - 3.19 (m, 2H), 3.14 - 3.05 (m, 2H), 2.46 (s, 3H), 2.40 - 2.29 (m, 2H), 1.85 - 1.73 (m, 2H), 1.58 - 1.50 (m, 2H), 0.90 (t, J = 7.6 Hz, 3H). Example 378: 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]- N-[4-(trifluoromethyl)-2-pyridyl]pyrazolo[1,5-a]pyridin-2-am ine. (36 mg, 23%) was prepared as described in Example 116, Step A-B except 2-bromo-4-(trifluoromethyl)pyridine (243 mg, 1.07 mmol) was used instead of 4-bromo- 1-(difluoromethyl)-1H-pyrazole in Step A. MS (ESI): mass calcd. for C26H25F3N6O2, 510.2; m/z 388

found, 511.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.31 (s, 1H), 8.57 (d, J = 7.2 Hz, 1H), 8.48 (d, J = 5.2 Hz, 1H), 8.30 (s, 1H), 8.02 (s, 1H), 7.67 (s, 1H), 7.38 (s, 1H), 7.13 (dd, J = 1.6, 7.2 Hz, 1H), 7.11 (d, J = 5.2 Hz, 1H), 6.85 (s, 1H), 4.77 - 4.59 (m, 1H), 3.64 - 3.59 (m, 2H), 3.57 - 3.52 (m, 2H), 3.01 (d, J = 7.6 Hz, 2H), 2.46 (s, 3H), 2.38 - 2.26 (m, 2H), 1.72 (dd, J = 5.2, 13.6 Hz, 2H). Example 379: 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]- N-[1-methyl-5-(trifluoromethyl)pyrazol-3-yl]pyrazolo[1,5-a]p yridin-2-amine. -bromo-1-methyl-5-(trifluoromethyl)-1H-pyrazole and 5-bromo-1- methyl-3-(trifluoromethyl)-1H-pyrazole.’ Cesium carbonate (1.8 g, 5.6 mmol) was added in portions to a 0 °C (ice/water) solution consisting of 3-bromo-5-(trifluoromethyl)-1H-pyrazole (600 mg, 2.79 mmol) and DMSO (10 mL). The resulting mixture was stirred at 0 °C for 10 min. Methyl iodide (4.31 mg, 30.37 mmol) was added dropwise into the mixture at 0 °C (ice/water). The mixture was warmed to room temperature and stirred for 5 hours. The reaction mixture was poured into water (30 mL) and extracted with ethyl acetate (30 x 3 mL). The combined organic extracts were dried over Na2SO4, filtered, and evaporated to dryness under reduced pressure to give the crude product (600 mg) as a reddish oil. Step B: 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4- pyridyl]-N-[1-methyl-5-(trifluoromethyl)pyrazol-3-yl]pyrazol o[1,5-a]pyridin-2-amine. The title compound (36 mg, 22%) was prepared as described in Example 116, Step A-B except a ‘mixture of 3-bromo-1-methyl-5-(trifluoromethyl)-1H-pyrazole and 5-bromo-1-methyl-3- (trifluoromethyl)-1H-pyrazole’ (369 mg, 1.61 mmol) was used instead of 4-bromo-1- (difluoromethyl)-1H-pyrazole in Step A, and HCl in 1,4-dioxane was used instead of TFA in 389

Step B to deprotect the correct pyrazole isomer product (see Example 403 for the other pyrazole isomer product that was also isolated alongside this). MS (ESI): mass calcd. for C25H26F3N7O2, 513.2; m/z found, 514.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 9.48 (s, 1H), 8.50 (d, J = 7.2 Hz, 1H), 8.28 (s, 1H), 7.91 (d, J = 1.2 Hz, 1H), 7.35 (s, 1H), 7.03 (dd, J = 2.0, 7.2 Hz, 1H), 6.72 (s, 1H), 6.32 (s, 1H), 4.73 - 4.55 (m, 1H), 3.86 (s, 3H), 3.59 - 3.54 (m, 2H), 3.53 - 3.48 (m, 2H), 2.93 (d, J = 8.0 Hz, 2H), 2.45 (s, 3H), 2.36 - 2.21 (m, 2H), 1.70 - 1.60 (m, 2H). ¹⁹ F NMR (376 MHz, DMSO-d ₆ ) δ -59.2 (s, 3F). Example 380: 5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]- N-(1-methyltriazol-4-yl)pyrazolo[1,5-a]pyridin-2-amine. (65 mg, 34%) was prepared as described in Example 116, Step A-B except 4-bromo-1-methyl-1H-1,2,3-triazole (139 mg, 0.86 mmol) was used instead of 4-bromo- 1-(difluoromethyl)-1H-pyrazole in Step A, and HCl in 1,4-dioxane was used instead of TFA in Step B. MS (ESI): mass calcd. for C ₂₃ H ₂₆ N ₈ O ₂ , 446.2; m/z found, 447.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.49 (s, 1H), 8.49 (d, J = 7.2 Hz, 1H), 8.28 (s, 1H), 7.92 (d, J = 1.2 Hz, 1H), 7.64 (s, 1H), 7.36 (s, 1H), 7.04 (dd, J = 2.0, 7.2 Hz, 1H), 6.25 (s, 1H), 4.74 - 4.60 (m, 1H), 4.04 (s, 3H), 3.69 - 3.62 (m, 2H), 3.61 - 3.56 (m , 2H), 3.10 (d, J = 7.2 Hz, 2H), 2.46 (s, 3H), 2.38 - 2.30 (m, 2H), 1.83 - 1.73 (m, 2H). Example 381: 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]- N-(5-methylpyrazin-2-yl)pyrazolo[1,5-a]pyridin-2-amine. 390

(65 mg, 51%) was prepared as described in Example 116, Step A-B except 2-bromo-5-methylpyrazine (111 mg, 0.64 mmol) was used instead of 4-bromo-1- (difluoromethyl)-1H-pyrazole in Step A. MS (ESI): mass calcd. for C25H27N7O2, 457.2; m/z found, 458.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.07 (s, 1H), 8.56 (s, 1H), 8.55 (d, J = 7.2 Hz, 1H), 8.29 (s, 1H), 8.12 (s, 1H), 7.99 (s, 1H), 7.36 (s, 1H), 7.11 (dd, J = 1.6, 7.2 Hz, 1H), 6.81 (s, 1H), 4.70 - 4.63 (m, 1H), 3.60 - 3.54 (m, 2H), 3.54 - 3.48 (m, 2H), 2.96 - 2.90 (m, 2H), 2.46 (s, 3H), 2.38 (s, 3H), 2.33 - 2.25 (m, 2H), 1.70 - 1.62 (m, 2H). Example 382: N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[[(1S,5R,7s)-3- oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-amine. 0 mg, 59%) was prepared as described in Example 116, Step A-B except 4-chloro-2,6-dimethylpyrimidine (119 mg, 0.84 mmol) was used instead of 4-bromo-1- (difluoromethyl)-1H-pyrazole in Step A. MS (ESI): mass calcd. for C26H29N7O2, 471.2; m/z found, 472.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.22 (s, 1H), 8.57 (d, J = 7.2 Hz, 1H), 8.30 (s, 1H), 8.04 (s, 1H), 7.38 (s, 1H), 7.15 (dd, J = 2.0, 7.2 Hz, 1H), 7.02 (br. s, 1H), 6.84 (br. s, 1H), 4.74 - 4.60 (m, 1H), 3.61 - 3.55 (m, 2H), 3.54 - 3.49 (m, 2H), 2.93 (d, J = 8.0 Hz, 2H), 2.48 - 2.44 (m, 6H), 2.36 - 2.22 (m, 5H), 1.71 - 1.61 (m, 2H). 391

Example 383: N,N-dimethyl-6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyc lo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridine -3-carboxamide. g, 24%) was prepared as described in Example 116, Step A-B except 6-bromo-N,N-dimethylnicotinamide (108 mg, 0.47 mmol) was used instead of 4-bromo- 1-(difluoromethyl)-1H-pyrazole in Step A. MS (ESI): mass calcd. for C28H31N7O3, 513.2; m/z found, 514.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.13 (s, 1H), 8.54 (d, J = 7.2 Hz, 1H), 8.33 (d, J = 2.0 Hz, 1H), 8.30 (s, 1H), 7.99 (s, 1H), 7.73 (dd, J = 2.4, 8.8 Hz, 1H), 7.36 (s, 1H), 7.34 (d, J = 8.8 Hz, 1H), 7.11 (dd, J = 2.0, 7.2 Hz, 1H), 6.86 (s, 1H), 4.74 - 4.56 (m, 1H), 3.59 - 3.54 (m, 2H), 3.53 - 3.48 (m, 2H), 3.01 (s, 6H), 2.96 - 2.89 (m, 2H), 2.46 (s, 3H), 2.34 - 2.25 (m, 2H), 1.70 - 1.61 (m, 2H). Example 384: N-ethyl-6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3. 3.1]nonan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridine -3-carboxamide. )-7-((4-(2-((5-(ethylcarbamoyl)pyridin-2- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)o xy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate. A mixture consisting of tert-butyl (1R,5S,7s)-7-((4-(2- ((5-(methoxycarbonyl)pyridin-2-yl)amino)pyrazolo[1,5-a]pyrid in-5-yl)-6-methylpyridin-3- yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonane-9-carboxylate (Example 370, Step A,100 mg, 0.166 392

mmol), EtNH2 (751 mg, 16.6 mmol), NaOMe (9.89 mg, 0.183 mmol) and MeOH (3 mL ) was stirred at 65 °C overnight before cooling to room temperature. The reaction mixture was concentrated to dryness under reduced pressure to give the crude product, which was used without further purification in Step B. Step B: N-ethyl-6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3. 3.1]nonan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridine -3-carboxamide. The title compound (44 mg, 41%) was prepared as described in Example 116, Step B except tert-butyl (1R,5S,7s)-7-((4-(2-((5-(ethylcarbamoyl)pyridin-2-yl)amino)p yrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonane-9-ca rboxylate (125 mg, 0.20 mmol) was used instead of tert-butyl (1R,5S,7s)-7-((4-(2-((1-(difluoromethyl)-1H-pyrazol-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)o xy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate. MS (ESI): mass calcd. for C28H31N7O3, 513.2; m/z found, 514.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.20 (s, 1H), 8.73 (d, J = 1.6 Hz, 1H), 8.55 (d, J = 7.2 Hz, 1H), 8.37 (t, J = 5.2 Hz, 1H), 8.30 (s, 1H), 8.12 - 8.00 (m, 2H), 7.37 (s, 1H), 7.35 (d, J = 8.8 Hz, 1H), 7.22 - 7.05 (m, 1H), 6.86 (s, 1H), 4.75 - 4.61 (m, 1H), 3.61 - 3.55 (m, 2H), 3.54 - 3.49 (m, 2H), 3.31 - 3.28 (m, 2H), 2.97 - 2.89 (m, 2H), 2.46 (s, 3H), 2.37 - 2.19 (m, 2H), 1.74 - 1.58 (m, 2H), 1.13 (t, J = 7.2 Hz, 3H). Example 385: N-ethyl-6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3. 3.1]nonan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridazi ne-3-carboxamide. )-7-((4-(2-((6-(ethoxycarbonyl)pyridazin-3- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)o xy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate. A mixture consisting of tert-butyl (1R,5S,7s)-7-((4-(2- 393

Aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)ox y)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate ( Intermediate 9, 100 mg, 0.215 mmol), ethyl 6-chloropyridazine-3-carboxylate (80.2 mg, 0.430 mmol), Pd(OAc)2 (8.7 mg, 0.039 mmol), Xantphos (50 mg, 0.086 mmol), CsF (97.9 mg, 0.644 mmol) and toluene (5 mL ) was purged with argon for 2 min. The resulting mixture was stirred at 100 °C for 10 h before cooling to room temperature. The reaction mixture was concentrated to dryness under reduced pressure to give the crude product, which was purified by FCC (eluent: petroleum ether: (ethyl acetate: ethanol = 3:1) = 100/0 to 50/50) to yield the title compound (180 mg, 94%) as a light yellow solid. Step B: tert-butyl (1R,5S,7s)-7-((4-(2-((6-(ethylcarbamoyl)pyridazin-3- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)o xy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate. The title compound (150 mg, 70%) was prepared as described in Example 384, Step A except tert-butyl (1R,5S,7s)-7-((4-(2-((6- (ethoxycarbonyl)pyridazin-3-yl)amino)pyrazolo[1,5-a]pyridin- 5-yl)-6-methylpyridin-3-yl)oxy)- 3-oxa-9-azabicyclo[3.3.1]nonane-9-carboxylate (150 mg, 0.24 mmol) was used instead of tert- butyl (1R,5S,7s)-7-((4-(2-((5-(methoxycarbonyl)pyridin-2-yl)amino) pyrazolo[1,5-a]pyridin-5- yl)-6-methylpyridin-3-yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonan e-9-carboxylate. Step C: N-ethyl-6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3. 3.1]nonan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridazi ne-3-carboxamide. The title compound (58 mg, 54%) was prepared as described in Example 116, Step B except tert-butyl (1R,5S,7s)-7-((4-(2-((6-(ethylcarbamoyl)pyridazin-3-yl)amino )pyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonane-9-ca rboxylate (125 mg, 0.20 mmol) was used instead of tert-butyl (1R,5S,7s)-7-((4-(2-((1-(difluoromethyl)-1H-pyrazol-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)o xy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate. MS (ESI): mass calcd. for C ₂₇ H ₃₀ N ₈ O ₃ , 514.2; m/z found, 515.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.64 (s, 1H), 9.03 (t, J = 5.2 Hz, 1H), 8.59 (d, J = 7.2 Hz, 1H), 8.30 (s, 1H), 8.11 (s, 1H), 8.02 (d, J = 9.2 Hz, 1H), 7.71 (d, J = 9.2 Hz, 1H), 7.39 (s, 1H), 7.20 - 7.12 (m, 1H), 6.96 (s, 1H), 4.77 - 4.61 (m, 1H), 3.64 - 3.49 (m, 4H), 394

3.39 - 3.36 (m, 2H), 2.96 - 2.89 (m, 2H), 2.47 (s, 3H), 2.38 - 2.22 (m, 2H), 1.74 - 1.55 (m, 2H), 1.15 (t, J = 7.2 Hz, 3H). Example 386: N-ethyl-5-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3. 3.1]nonan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyrazine -2-carboxamide. )-7-((4-(2-((5-(ethoxycarbonyl)pyrazin-2- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)o xy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate. The title compound (190 mg, 39%) was prepared as described in Example 385, Step A except ethyl 5-chloropyrazine-2-carboxylate (120 mg, 0.64 mmol) was used instead of ethyl 6-chloropyridazine-3-carboxylate. Step B: tert-butyl (1R,5S,7s)-7-((4-(2-((5-(ethylcarbamoyl)pyrazin-2- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)o xy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate. The title compound (190 mg, 58%) was prepared as described in Example 384, Step A except tert-butyl (1R,5S,7s)-7-((4-(2-((5- (ethoxycarbonyl)pyrazin-2-yl)amino)pyrazolo[1,5-a]pyridin-5- yl)-6-methylpyridin-3-yl)oxy)-3- oxa-9-azabicyclo[3.3.1]nonane-9-carboxylate (150 mg, 0.24 mmol) was used instead of tert- butyl (1R,5S,7s)-7-((4-(2-((5-(methoxycarbonyl)pyridin-2-yl)amino) pyrazolo[1,5-a]pyridin-5- yl)-6-methylpyridin-3-yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonan e-9-carboxylate. Step C: N-ethyl-5-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3. 3.1]nonan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyrazine -2-carboxamide. The title compound (21.4 mg, 15%) was prepared as described in Example 116, Step B except tert-butyl (1R,5S,7s)-7-((4-(2-((5-(ethylcarbamoyl)pyrazin-2-yl)amino)p yrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonane-9-ca rboxylate (160 mg, 0.26 mmol) 395

was used instead of tert-butyl (1R,5S,7s)-7-((4-(2-((1-(difluoromethyl)-1H-pyrazol-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)o xy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate. MS (ESI): mass calcd. for C ₂₇ H ₃₀ N ₈ O ₃ , 514.2; m/z found, 515.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.75 (s, 1H), 8.78 - 8.76 (m, 1H), 8.61 - 8.57 (m, 2H), 8.54 (t, J = 6.0 Hz, 1H), 8.30 (s, 1H), 8.07 - 8.05 (m, 1H), 7.38 (s, 1H), 7.19 (dd, J = 1.6, 7.2 Hz, 1H), 6.96 (s, 1H), 4.75 - 4.67 (m, 1H), 3.70 - 3.55 (m, 4H), 3.32 - 3.31 (m, 2H), 3.15 - 3.09 (m, 2H), 2.47 (s, 3H), 2.40 - 2.32 (m, 2H), 1.83 - 1.76 (m, 2H), 1.13 (t, J = 7.2 Hz, 3H). Example 387: N-(2-methoxyethyl)-6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-yl]amino]pyridine-3- carboxamide. 9%) was prepared as described in Example 371 except 2- methoxyethanamine (15 mg, 0.21 mmol) was used instead of 1-amino-2-methylpropan-2-ol in Step A and HCl in 1,4-dioxane was used instead of TFA in Step B. MS (ESI): mass calcd. for C29H33N7O4, 543.3; m/z found, 544.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.72 (d, J = 2.0 Hz, 1H), 8.34 (d, J = 7.2 Hz, 1H), 8.23 (s, 1H), 8.05 (dd, J = 2.0, 8.8 Hz, 1H), 7.91 (s, 1H), 7.85 (s, 1H), 7.47 (d, J = 8.8 Hz, 1H), 7.22 (s, 1H), 7.12 (dd, J = 2.0, 7.2 Hz, 1H), 6.58 (s, 1H), 6.56 (t, J = 5.2 Hz, 1H), 4.64 - 4.53 (m, 1H), 3.79 - 3.70 (m, 4H), 3.70 - 3.64 (m, 2H), 3.62 - 3.56 (m, 2H), 3.41 (s, 3H), 3.08 - 3.00 (m, 2H), 2.56 (s, 3H), 2.41 - 2.28 (m, 2H), 2.04 - 1.93 (m, 2H). Example 388: 6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nona n-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-N-tetrahydropyran -4-yl-pyridine-3-carboxamide. 396

0%) was prepared as described in Example 371 except tetrahydro-2H-pyran-4-amine (16 mg, 0.15 mmol) was used instead of 1-amino-2-methylpropan- 2-ol in Step A and HCl in 1,4-dioxane was used instead of TFA in Step B. MS (ESI): mass calcd. for C ₃₁ H ₃₅ N ₇ O ₄ , 569.3; m/z found, 570.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.24 (s, 1H), 8.74 (d, J = 2.0 Hz, 1H), 8.56 (d, J = 7.2 Hz, 1H), 8.30 (s, 1H), 8.22 (d, J = 7.6 Hz, 1H), 8.12 - 7.93 (m, 2H), 7.38 (s, 1H), 7.35 (d, J = 8.8 Hz, 1H), 7.12 (dd, J = 1.6, 7.2 Hz, 1H), 6.86 (s, 1H), 4.74 - 4.61 (m, 1H), 4.08 - 3.95 (m, 1H), 3.94 - 3.82 (m, 2H), 3.61 - 3.55 (m, 2H), 3.54 - 3.49 (m, 2H), 3.43 - 3.41 (m, 2H), 2.97 - 2.88 (m, 2H), 2.46 (s, 3H), 2.37 - 2.23 (m, 2H), 1.83 - 1.72 (m, 2H), 1.71 - 1.51 (m, 4H). Example 389: N-(2-cyano-2-methyl-propyl)-6-[[5-[2-methyl-5-[[(1S,5R,7s)-3 -oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-yl]amino]pyridine-3- carboxamide. The title compound (40 mg, 44%) was prepared as described in Example 371 except 3- amino-2,2-dimethylpropanenitrile (67 mg, 0.68 mmol) was used instead of 1-amino-2- methylpropan-2-ol in Step A. MS (ESI): mass calcd. for C ₃₁ H ₃₄ N ₈ O ₃ , 566.3; m/z found, 567.2 [M+H] ⁺ . ¹ H NMR (400MHz, CDCl ₃ ) δ 8.79 (d, J = 2.0 Hz, 1H), 8.37 (d, J = 7.2 Hz, 1H), 8.23 (s, 397

1H), 8.08 (dd, J = 2.4, 8.8 Hz, 1H), 7.93 (s, 1H), 7.91 - 7.86 (m, 1H), 7.50 (d, J = 8.8 Hz, 1H), 7.22 (s, 1H), 7.14 (dd, J = 2.0, 7.2 Hz, 1H), 6.59 (s, 1H), 6.55 (t, J = 1.2 Hz, 1H), 4.63 - 4.56 (m, 1H), 3.79 - 3.71 (m, 4H), 3.64 (d, J = 6.8 Hz, 2H), 3.07 - 3.02 (m, 2H), 2.56 (s, 3H), 2.41 - 2.32 (m, 2H), 2.02 - 1.95 (m, 2H), 1.44 (s, 6H). Example 390: N-(2-hydroxy-2-methyl-propyl)-5-[[5-[2-methyl-5-[[(1S,5R,7s) -3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-yl]amino]pyrazine-2- carboxamide. -((4-(2-((5-(methoxycarbonyl)pyrazin-2- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)o xy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate. The title compound (290 mg, 48%) was prepared as described in Example 116 Step A except methyl 5-chloropyrazine-2-carboxylate (122 mg, 0.71 mmol) was used instead of 4-bromo-1-(difluoromethyl)-1H-pyrazole. Step B: 5-((5-(5-(((1R,5S,7s)-9-(tert-butoxycarbonyl)-3-oxa-9-azabic yclo[3.3.1]nonan-7- yl)oxy)-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)ami no)pyrazine-2-carboxylic acid. The title compound (180 mg, 68%) was prepared as described in Example 371, Step B except tert-butyl (1R,5S,7s)-7-((4-(2-((5-(methoxycarbonyl)pyrazin-2-yl)amino) pyrazolo[1,5-a]pyridin- 5-yl)-6-methylpyridin-3-yl)oxy)-3-oxa-9-azabicyclo[3.3.1]non ane-9-carboxylate was used instead of tert-butyl (1R,5S,7s)-7-((4-(2-((5-(methoxycarbonyl)pyridin-2-yl)amino) pyrazolo[1,5- a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)-3-oxa-9-azabicyclo [3.3.1]nonane-9-carboxylate. Step C: tert-butyl (1R,5S,7s)-7-((4-(2-((5-((2-hydroxy-2- methylpropyl)carbamoyl)pyrazin-2-yl)amino)pyrazolo[1,5-a]pyr idin-5-yl)-6-methylpyridin-3- yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonane-9-carboxylate. The title compound (100 mg, 77%) 398

was prepared as described in Example 371, Step A except 5-((5-(5-(((1R,5S,7s)-9-(tert- butoxycarbonyl)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2-m ethylpyridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)amino)pyrazine-2-carboxylic acid was used instead of 6-((5-(5-(((1R,5S,7s)-9- (tert-butoxycarbonyl)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)ox y)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)amino)nicotinic acid. Step D: N-(2-hydroxy-2-methyl-propyl)-5-[[5-[2-methyl-5-[[(1S,5R,7s) -3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-yl]amino]pyrazine-2- carboxamide. The title compound (36.9 mg, 42%) was prepared as described in Example 116, Step B except tert-butyl (1R,5S,7s)-7-((4-(2-((5-((2-hydroxy-2-methylpropyl)carbamoyl )pyrazin- 2-yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl )oxy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate (100 mg, 0.15 mmol) was used instead of tert-butyl (1R,5S,7s)-7-((4-(2-((1-(difluoromethyl)-1H-pyrazol-4-yl)ami no)pyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonane-9-ca rboxylate. MS (ESI): mass calcd. for C ₂₉ H ₃₄ N ₈ O ₄ , 558.3; m/z found, 559.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.82 (s, 1H), 8.80 (s, 1H), 8.64 - 8.57 (m, 2H), 8.30 (s, 1H), 8.16 (t, J = 6.0 Hz, 1H), 8.05 (s, 1H), 7.38 (s, 1H), 7.18 (dd, J = 1.6, 7.2 Hz, 1H), 6.97 (s, 1H), 4.73 (s, 1H), 4.71 - 4.62 (m, 1H), 3.61 - 3.44 (m, 4H), 3.28 (d, J = 6.0 Hz, 2H), 2.96 - 2.91 (m, 2H), 2.46 (s, 3H), 2.34 - 2.25 (m, 2H), 1.69 - 1.62 (m, 2H), 1.12 (s, 6H). Example 391: 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4- yl)-N-(5-methylpyrimidin-2-yl)pyrazolo[1,5-a]pyridin-2-amine . 9

The title compound (51 mg, 41%) was prepared as described in Example 116, Step A except 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-amine (Example 405, 100 mg, 0.27 mmol) was used instead of Intermediate 9 and 2-chloro-5-methylpyrimidine (35 mg, 0.27 mmol) was used instead of 4- bromo-1-(difluoromethyl)-1H-pyrazole. MS (ESI): mass calcd. for C25H27N7O2, 457.2; m/z found, 458.1 [M+H] ⁺ . ¹ H NMR (500 MHz, CD ₃ OD) δ 8.35 - 8.23 (m, 3H), 8.07 (s, 1H), 7.96 (dd, J = 2.0, 0.9 Hz, 1H), 7.32 (s, 1H), 7.06 (dd, J = 7.2, 2.0 Hz, 1H), 6.93 (s, 1H), 4.60-4.55 (m, 1H), 3.73 - 3.59 (m, 4H), 2.92 (d, J = 7.3 Hz, 2H), 2.43 (s, 3H), 2.35 - 2.25 (m, 2H), 2.14 (s, 3H), 1.93 - 1.85 (m, 2H). Example 392: 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]- N-pyrazin-2-yl-pyrazolo[1,5-a]pyridin-2-amine. (140 mg, 63%) was prepared as described in Example 116, Step A-B except 2-bromopyrazine (307 mg, 1.93 mmol) was used instead of 4-bromo-1-(difluoromethyl)- 1H-pyrazole in Step A. MS (ESI): mass calcd. for C24H25N7O2, 443.2; m/z found, 444.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.30 (s, 1H), 8.63 (s, 1H), 8.57 (d, J = 6.8 Hz, 1H), 8.30 (s, 1H), 8.23 (s, 1H), 8.05 - 7.97 (m, 2H), 7.37 (s, 1H), 7.13 (dd, J = 1.2, 6.8 Hz, 1H), 6.88 (s, 1H), 4.73 - 4.62 (m, 1H), 3.62 - 3.55 (m, 2H), 3.55 - 3.48 (m, 2H), 3.00 - 2.90 (m, 2H), 2.46 (s, 3H), 2.36 - 2.24 (m, 2H), 1.73 - 1.62 (m, 2H) Example 393: 5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]- N-(5-methylsulfonyl-2-pyridyl)pyrazolo[1,5-a]pyridin-2-amine . 400

mg, 74%) was prepared as described in Example 116, Step A-B except 2-bromo-5-(methylsulfonyl)pyridine (76 mg, 0.32 mmol) was used instead of 4-bromo-1- (difluoromethyl)-1H-pyrazole in Step A. MS (ESI): mass calcd. for C26H28N6O4S, 520.2; m/z found, 521.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.65 (s, 1H), 8.69 (d, J = 2.4 Hz, 1H), 8.58 (d, J = 7.2 Hz, 1H), 8.30 (s, 1H), 8.09 - 8.03 (m, 2H), 7.44 (d, J = 8.8 Hz, 1H), 7.39 (s, 1H), 7.17 (dd, J = 1.6, 7.2 Hz, 1H), 6.91 (s, 1H), 4.75 - 4.66 (m, 1H), 3.69 - 3.62 (m, 2H), 3.61 - 3.54 (m, 2H), 3.23 (s, 3H), 3.12 - 3.05 (m, 2H), 2.47 (s, 3H), 2.41 - 2.29 (m, 2H), 1.82 - 1.71 (m, 2H) Example 394: 5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]- N-pyridazin-3-yl-pyrazolo[1,5-a]pyridin-2-amine. p (41 mg, 71%) was prepared as described in Example 116, Step A-B except 3-bromopyridazine (171 mg, 1.07 mmol) was used instead of 4-bromo-1- (difluoromethyl)-1H-pyrazole in Step A. MS (ESI): mass calcd. for C24H25N7O2, 443.2; m/z found, 444.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.18 (s, 1H), 8.72 (d, J = 4.0 Hz, 1H), 8.56 (d, J = 7.2 Hz, 1H), 8.30 (s, 1H), 8.07 (s, 1H), 7.66 - 7.58 (m, 1H), 7.55 - 7.48 (m, 1H), 7.39 (s, 1H), 7.13 (dd, J = 1.2, 6.8 Hz, 1H), 6.91 (s, 1H), 4.79 - 4.61 (m, 1H), 3.71 - 3.63 (m, 2H), 401

3.63 - 3.55 (m, 2H), 3.11 (d, J = 6.4 Hz, 2H), 2.47 (s, 3H), 2.40 - 2.31 (m, 2H), 1.85 - 1.74 (m, 2H). Example 395: 5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]- N-pyrimidin-4-yl-pyrazolo[1,5-a]pyridin-2-amine. (10 mg, 21%) was prepared as described in Example 116, Step A-B except 4-chloropyrimidine hydrochloride (130 mg, 0.86 mmol) was used instead of 4-bromo-1- (difluoromethyl)-1H-pyrazole in Step A. MS (ESI): mass calcd. for C ₂₄ H ₂₅ N ₇ O ₂ , 443.2; m/z found, 444.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.44 (s, 1H), 8.71 (s, 1H), 8.58 (d, J = 6.8 Hz, 1H), 8.37 (d, J = 6.0 Hz, 1H), 8.30 (s, 1H), 8.04 (s, 1H), 7.37 (s, 1H), 7.35 - 7.28 (m, 1H), 7.19 - 7.13 (m, 1H), 6.87 (s, 1H), 4.74 - 4.61 (m, 1H), 3.61 - 3.47 (m, 4H), 2.99 - 2.88 (m, 2H), 2.46 (s, 3H), 2.32 - 2.24 (m, 2H), 1.71 - 1.60 (m, 2H). Example 396: 5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]- N-(6-methylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. 2

The title compound (25 mg, 89%) was prepared as described in Example 116, Step A-B except 4-chloro-6-methylpyrimidine (133 mg, 0.81 mmol) was used instead of 4-bromo-1- (difluoromethyl)-1H-pyrazole in Step A. MS (ESI): mass calcd. for C ₂₅ H ₂₇ N ₇ O ₂ , 457.2; m/z found, 458.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.31 (s, 1H), 8.61 - 8.55 (m, 2H), 8.30 (s, 1H), 8.04 - 8.01 (m, 1H), 7.37 (s, 1H), 7.14 (dd, J = 1.6, 6.8 Hz, 2H), 6.85 (s, 1H), 4.72 - 4.63 (m, 1H), 3.60 - 3.47 (m, 4H), 2.96 - 2.89 (m, 2H), 2.46 (s, 3H), 2.34 (s, 3H), 2.33 - 2.25 (m, 2H), 1.70 - 1.60 (m, 2H). Example 397: N-(5-fluoro-1-methyl-pyrazol-3-yl)-5-[2-methyl-5-[[(1S,5R,7s )-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-amine. 3 mg, 67%) was prepared as described in Example 116, Step A-B except 3-bromo-5-fluoro-1-methyl-1h-pyrazole (81 mg, 0.45 mmol) was used instead of 4- bromo-1-(difluoromethyl)-1H-pyrazole in Step A. MS (ESI): mass calcd. for C24H26FN7O2, 463.2; m/z found, 464.3 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 9.18 (s, 1H), 8.43 (d, J = 7.2 Hz, 1H), 8.28 (s, 1H), 7.87 (dd, J = 2.0, 0.9 Hz, 1H), 7.34 (s, 1H), 7.00 (dd, J = 7.2, 2.0 Hz, 1H), 6.36 (d, J = 0.9 Hz, 1H), 5.82 (d, J = 5.5 Hz, 1H), 4.70 – 4.59 (m, 1H), 3.58 (d, J = 0.9 Hz, 3H), 3.55 (dd, J = 10.7, 2.4 Hz, 2H), 3.49 (d, J = 10.8 Hz, 2H), 2.92 (d, J = 8.7 Hz, 2H), 2.45 (s, 3H), 2.33 – 2.23 (m, 2H), 1.70 – 1.58 (m, 2H). Example 398: N-(3-fluoro-1-methyl-pyrazol-4-yl)-5-[2-methyl-5-[[(1S,5R,7s )-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-amine. 403

mg, 60%) was prepared as described in Example 116, Step A-B except 4-bromo-3-fluoro-1-methyl-1h-pyrazole (85 mg, 0.48 mmol) was used instead of 4- bromo-1-(difluoromethyl)-1H-pyrazole in Step A. MS (ESI): mass calcd. for C24H26FN7O2, 463.2; m/z found, 464.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 8.39 (d, J = 7.0 Hz, 1H), 8.27 (s, 1H), 8.06 (s, 1H), 7.85 – 7.74 (m, 2H), 7.33 (s, 1H), 7.01 – 6.90 (m, 1H), 5.82 (s, 1H), 4.67 – 4.60 (m, 1H), 3.71 (s, 3H), 3.55 (d, J = 10.5 Hz, 2H), 3.49 (d, J = 10.6 Hz, 2H), 2.92 (d, J = 8.5 Hz, 2H), 2.44 (s, 3H), 2.31 – 2.22 (m, 2H), 1.69 – 1.58 (m, 2H). Example 399: N-(4-fluoro-1-methyl-pyrazol-3-yl)-5-[2-methyl-5-[[(1S,5R,7s )-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-amine. mg, 67%) was prepared as described in Example 116, Step A-B except 3-bromo-4-fluoro-1-methyl-1H-pyrazole (85 mg, 0.48 mmol) was used instead of 4- bromo-1-(difluoromethyl)-1H-pyrazole in Step A. MS (ESI): mass calcd. for C24H26FN7O2, 463.2; m/z found, 464.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 8.78 (s, 1H), 8.43 – 8.39 (m, 1H), 8.28 (s, 1H), 7.86 (dd, J = 2.0, 0.9 Hz, 1H), 7.75 (d, J = 4.6 Hz, 1H), 7.33 (s, 1H), 7.00 (dd, J = 7.2, 2.0 Hz, 1H), 6.30 (d, J = 0.8 Hz, 1H), 4.68 – 4.59 (m, 1H), 3.70 (s, 3H), 3.55 (dd, J = 10.7, 2.3 Hz, 2H), 3.49 (d, J = 10.8 Hz, 2H), 2.92 (d, J = 8.6 Hz, 2H), 2.45 (s, 3H), 2.32 – 2.23 (m, 2H), 1.69 – 1.58 (m, 2H). 404

Example 400: N-[3-methyl-5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3. 3.1]nonan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropaneca rboxamide. o-2-methylpyridin-4-yl)-3-formylpyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide. To a solution of N-(5-(5-fluoro-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (500 mg, 1.611 mmol) and DMF (15.594 mL, 0.944 g/mL, 201.398 mmol) was added POCl3 (0.15 mL, 1.65 g/mL, 1.611 mmol) at room temp. The solution turned yellow immediately. The solution was stirred for 2 h before quenching with 5 mL H ₂ O and then diluted with 50 mL DCM. The solution was washed with H2O 4x. The organics were collected, dried over MgSO4, filtered, and concentrated down. The crude was absorbed onto silica gel and purified via FCC with 0-10% MeOH/DCM. Took the material (355 mg, 65%) forward to the next step. Step B: N-(5-(5-fluoro-2-methylpyridin-4-yl)-3-(hydroxymethyl)pyrazo lo[1,5-a]pyridin- 2-yl)cyclopropanecarboxamide. To a mixture of N-(5-(5-fluoro-2-methylpyridin-4-yl)-3- formylpyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (200 mg, 0.591 mmol) and THF (4.811 mL, 0.886 g/mL, 59.112 mmol) was added NaBH ₄ (67.091 mg, 1.773 mmol) at room temp. The solution was stirred for 3 h, and the mixture turned into solution. The reaction was quenched with 5 mL H ₂ O and then diluted with 25 mL EtOAc. The layers were separated. The organics were washed 1x with 1M NaOH. The layers were separated. The organic layer was dried with MgSO4, filtered, and concentrated down under vacuum. The crude (200 mg, 99%) was used in the next step without further purification. 405

Step C: N-(5-(5-fluoro-2-methylpyridin-4-yl)-3-methylpyrazolo[1,5-a] pyridin-2- yl)cyclopropanecarboxamide. To a residue of N-(5-(5-fluoro-2-methylpyridin-4-yl)-3- (hydroxymethyl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarbo xamide (201.191 mg, 0.591 mmol) was added triethylsilane (687.345 mg, 5.911 mmol) and then added TFA (9.047 mL, 1.49 g/mL, 118.224 mmol). The reaction was stirred at room temp for 30 min. The crude was evaporated to dryness, diluted with EtOAc, and washed with NaHCO31x. The organics were collected, dried over MgSO4, filtered, and concentrated down under vacuum. The crude material was purified via FCC with 5-10% MeOH-DCM to give 160 mg of the title compound (83%). Step D: N-[3-methyl-5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3. 3.1]nonan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropaneca rboxamide. To a 50 mL flask was added endo tert-butyl (1R,5S,7r)-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane-9-carbo xylate (180.026 mg, 0.74 mmol) and DMA (1.484 mL, 0.941 g/mL, 16.032 mmol) and then NaH (60% dispersion in mineral oil) (49.324 mg, 1.233 mmol). The mixture was stirred for 5 min before injecting N-(5-(5-fluoro-2-methylpyridin-4-yl)-3-methylpyrazolo[1,5-a] pyridin-2- yl)cyclopropanecarboxamide (80 mg, 0.247 mmol) into the flask via syringe. The reaction was stirred at 80 °C in a heating block for 120 min. The crude was quenched with water and then diluted with EtOAc. The organics were extracted and concentrated down in the presence of silica gel. The crude was purified via FCC with 5-10% MeOH:DCM. The pure fractions were concentrated down to a clear oil. To this clear oil was added TFA (0.377 mL, 1.49 g/mL, 4.933 mmol) and DCM (0.948 mL, 1.326 g/mL, 14.798 mmol). The crude was evaporated in vacuo. The crude oil residue was dissolved with DCM/MeOH and concentrated down again. The crude was dissolved with DMSO and purified via ISCO prep. HPLC using 10-60% ACN- H ₂ O with 20mM of NH ₃ OH as modifier. The fractions containing the desired product were collected and concentrated down to ~30 mL under vacuo. The sample was lyophilized to give the title compound (63 mg, 57%). MS (ESI): mass calcd. for C ₂₅ H ₂₉ N ₅ O ₃ , 447.2; m/z found, 448.0 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 10.28 (s, 1H), 8.50 (d, J = 7.2 Hz, 1H), 8.29 (s, 1H), 7.97 (dd, J = 2.0, 1.0 Hz, 1H), 7.40 (s, 1H), 7.16 (dd, J = 7.3, 2.0 Hz, 1H), 4.67 (p, J = 6.1 Hz, 1H), 3.64 – 3.48 (m, 4H), 3.00 (d, J = 7.9 Hz, 2H), 2.47 (s, 3H), 2.31 (dt, J = 14.1, 7.2 Hz, 2H), 2.13 (s, 3H), 1.89 (td, J = 12.5, 12.1, 5.9 Hz, 1H), 1.77 – 1.66 (m, 2H), 0.81 (d, J = 5.8 Hz, 4H). 406

Example 401: 2-methyl-6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3 .3.1]nonan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridazi n-3-one. -methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-2- methylpyridazin-3(2H)-one. The title compound (1.64 g, >100%) was prepared as described in Example 116, Step A except Intermediate 8 (1.02 g, 4.22 mmol) was used instead of Intermediate 9 and 6-bromo-2-methyl-3(2h)-pyridazinone (900 mg, 4.76 mmol) was used instead of 4-bromo-1-(difluoromethyl)-1H-pyrazole. Step B: tert-butyl (1R,5S,7s)-7-((6-methyl-4-(2-((1-methyl-6-oxo-1,6-dihydropyr idazin- 3-yl)amino)pyrazolo[1,5-a]pyridin-5-yl)pyridin-3-yl)oxy)-3-o xa-9-azabicyclo[3.3.1]nonane-9- carboxylate. The title compound (616 mg, 71%) was prepared as described in Example 136 except 6-((5-(5-fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin- 2-yl)amino)-2- methylpyridazin-3(2H)-one (530 mg, 1.51 mmol) was used instead of Intermediate 6 and tert- butyl 7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane-9-carboxylate was used instead of endo-7- hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride. Step C: 2-methyl-6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3 .3.1]nonan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridazi n-3-one. The title compound (275 mg, 54%) was prepared as described in Example 116, Step B except tert-butyl (1R,5S,7s)-7-((6- methyl-4-(2-((1-methyl-6-oxo-1,6-dihydropyridazin-3-yl)amino )pyrazolo[1,5-a]pyridin-5- yl)pyridin-3-yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonane-9-carbo xylate (616 mg, 1.07 mmol) was used instead of tert-butyl (1R,5S,7s)-7-((4-(2-((1-(difluoromethyl)-1H-pyrazol-4- 407

yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-y l)oxy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate. MS (ESI): mass calcd. for C25H27N7O3, 473.2; m/z found, 474.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 9.86 (s, 1H), 8.51 (dt, J = 7.2, 0.9 Hz, 1H), 8.29 (s, 1H), 8.02 (dd, J = 2.0, 0.9 Hz, 1H), 7.42 – 7.33 (m, 2H), 7.15 (dd, J = 7.2, 2.0 Hz, 1H), 6.92 (d, J = 9.7 Hz, 1H), 6.83 (d, J = 0.8 Hz, 1H), 4.66 (p, J = 6.4 Hz, 1H), 3.60 (s, 3H), 3.59 – 3.46 (m, 4H), 2.93 (d, J = 7.9 Hz, 2H), 2.46 (s, 3H), 2.35 – 2.22 (m, 3H), 1.66 (ddd, J = 13.8, 6.6, 2.5 Hz, 2H). Example 402: 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]- N-pyrimidin-2-yl-pyrazolo[1,5-a]pyridin-2-amine. S,7s)-7-((4-(2-Aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyr idin-3- yl)oxy)-3-oxa-9-azabicyclo[3.3.1]nonane-9-carboxylate ( Intermediate 9, 72 mg, 0.16 mmol) was added HCl in MeOH (1 mL, 1.25 M). The mixture was stirred for 2 h and concentrated. To this residue was added 1,4-dioxane (10 mL), then NaH (60% dispersion in mineral oil) (62 mg, 1.55 mmol) and 2-bromopyrimidine (25 mg, 0.16 mmol). The mixture was heated at 120 °C for 4 h. At 0 °C, water was carefully added for quenching. Concentrated mixture. Water (20 mL) was added, then an extraction with ethyl acetate was performed (3x 20 mL). Purification via FFC (10% MeOH/DCM) yields 25 mg of the title compound (36%). MS (ESI): mass calcd. for C24H25N7O2, 443.2; m/z found, 444.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CD ₃ OD) δ 8.52 (d, J = 4.8 Hz, 2H), 8.49 – 8.37 (m, 1H), 8.16 (s, 1H), 8.06 (dd, J = 2.0, 0.9 Hz, 1H), 7.40 (s, 1H), 7.17 (dd, J = 7.3, 2.0 Hz, 1H), 7.07 (d, J = 0.8 Hz, 1H), 6.87 (t, J = 4.8 Hz, 1H), 4.74 – 4.61 (m, 1H), 3.87 – 3.66 (m, 4H), 2.97 (d, J = 7.3 Hz, 2H), 2.52 (s, 3H), 2.44 – 2.31 (m, 2H), 2.02 – 1.92 (m, 2H). 408 Example 403: 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4- yl)-N-(1-methyl-3-(trifluoromethyl)-1H-pyrazol-5-yl)pyrazolo [1,5-a]pyridin-2-amine. N HN _N p (36 mg, 25%) was prepared as described in Example 379, where the appropriate pyrazole isomer was obtained instead (see Example 379, Step B). MS (ESI): mass calcd. for C ₂₅ H ₂₆ F ₃ N ₇ O ₂ , 513.2; m/z found, 514.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 9.31 (s, 1H), 8.56 (d, J = 7.2 Hz, 1H), 8.29 (s, 1H), 7.96 (s, 1H), 7.37 (s, 1H), 7.07 (dd, J = 1.6, 7.2 Hz, 1H), 6.74 (s, 1H), 6.14 (s, 1H), 4.80 - 4.59 (m, 1H), 3.82 (s, 3H), 3.60 - 3.55 (m, 2H), 3.54 - 3.49 (m, 2H), 2.94 (d, J = 8.0 Hz, 2H), 2.45 (s, 3H), 2.38 - 2.21. ¹⁹ F NMR (376 MHz, DMSO-d ₆ ) δ -60.9 (s, 3F). Example 404: N-(5-fluoropyrimidin-2-yl)-5-[2-methyl-5-[[(1S,5R,7s)-3-oxa- 9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-amine. 9

The title compound (41 mg, 32%) was prepared as described in Example 116, Step A except 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-amine (Example 405, 100 mg, 0.27 mmol) was used instead of Intermediate 9 and 2-chloro-5-fluoropyrimidine (36 mg, 0.27 mmol) was used instead of 4- bromo-1-(difluoromethyl)-1H-pyrazole. MS (ESI): mass calcd. for C24H24FN7O2, 461.2; m/z found, 462.1 [M+H] ⁺ . ¹ H NMR (500 MHz, CD ₃ OD) δ 8.47 (s, 2H), 8.17 (s, 1H), 8.07 (d, J = 2.1 Hz, 2H), 7.41 (s, 1H), 7.17 (dd, J = 7.3, 2.0 Hz, 1H), 7.04 (s, 1H), 4.75-4-65 (m, 1H), 3.87 - 3.80 (m, 4H), 3.03 - 2.95 (m, 2H), 2.53 (s, 3H), 2.30 - 2.18 (m, 2H), 1.85 - 1.78 (m, 2H). Example 405: 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-amine. ng Intermediate 9 (140 mg, 0.30 mmol) was added TFA (0.81 mL, 10.5 mmol) at 23 °C. The solution was stirred for 15 min. The solvent was removed in vacuo, then dissolved in DMSO to be purified by prep reverse phase basic HPLC (C1850 x 100 mm) using 10-80% MeCN in water (20 mM NH4OH). Fractions containing the product were pooled together and concentrated in vacuo. The resulting oil was dissolved in 1:1 MeCN:water and lypholized to yield the title compound. MS (ESI): mass calcd. for C20H23N5O2, 365.2; m/z found, 366.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 8.29 – 8.21 (m, 2H), 7.73 (dd, J = 2.0, 0.9 Hz, 1H), 7.31 (s, 1H), 6.86 (dd, J = 7.2, 2.1 Hz, 1H), 5.66 (d, J = 0.8 Hz, 1H), 5.29 (s, 2H), 4.66 – 4.56 (m, 1H), 3.55 (dd, J = 10.7, 2.4 Hz, 2H), 3.49 (d, J = 10.5 Hz, 2H), 2.92 (d, J = 8.7 Hz, 2H), 2.44 (s, 3H), 2.32 – 2.23 (m, 2H), 1.67 – 1.59 (m, 2H). 410

Example 406: 5-[2-methyl-5-[[(1S,5R,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]- 4-pyridyl]-N-[6-(trifluoromethyl)-2-pyridyl]pyrazolo[1,5-a]p yridin-2-amine. g, 41%) was prepared as described in Example 116, Step C except 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N-[6- (trifluoromethyl)-2-pyridyl]pyrazolo[1,5-a]pyridin-2-amine (Example 366, 100 mg, 0.20 mmol) was used instead of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 - methylpyridin-4-yl)-N-(1-(difluoromethyl)-1H-pyrazol-4-yl)py razolo[1,5-a]pyridin-2-amine. MS (ESI): mass calcd. for C27H27F3N6O2, 524.2; m/z found, 525.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.36 (s, 1H), 8.52 (d, J = 7.2 Hz, 1H), 8.31 (s, 1H), 8.19 (s, 1H), 7.92 - 7.82 (m, 1H), 7.52 (d, J = 8.4 Hz, 1H), 7.44 (s, 1H), 7.29 - 7.20 (m, 2H), 6.92 (s, 1H), 4.76 - 4.66 (m, 1H), 3.81 (d, J = 10.0 Hz, 2H), 3.56 (d, J = 10.8 Hz, 2H), 2.67 - 2.60 (m, 2H), 2.46 (s, 3H), 2.44 - 2.35 (m, 5H), 1.64 (d, J = 15.2 Hz, 2H) ¹⁹ F NMR (376 MHz, DMSO-d6) δ -67.15 (s, 3F). Example 407: N-methyl-6-[[5-[2-methyl-5-[[(1S,5R,7s)-9-methyl-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-yl]amino]pyridine-2- carboxamide. 411

, 12%) was prepared as described in Example 116, Step C except N-methyl-6-[[5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3 .3.1]nonan-7-yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridine-2-carboxa mide (Example 367, 200 mg, 0.40 mmol) was used instead of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 - methylpyridin-4-yl)-N-(1-(difluoromethyl)-1H-pyrazol-4-yl)py razolo[1,5-a]pyridin-2-amine. MS (ESI): mass calcd. for C ₂₈ H ₃₁ N ₇ O ₃ , 513.2; m/z found, 514.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.00 (s, 1H), 8.52 (d, J = 7.2 Hz, 1H), 8.23 (d, J = 1.2 Hz, 1H), 8.20 (s, 1H), 8.15 (q, J = 4.4 Hz, 1H), 7.85 - 7.75 (m, 1H), 7.49 (d, J = 8.4 Hz, 1H), 7.45 (d, J = 7.2 Hz, 1H), 7.42 (s, 1H), 7.23 (dd, J = 2.0, 7.2 Hz, 1H), 6.80 (s, 1H), 4.77 - 4.65 (m, 1H), 3.85 - 3.76 (m, 2H), 3.60 - 3.51 (m, 2H), 2.91 (d, J = 5.2 Hz, 3H), 2.67 - 2.61 (m, 2H), 2.46 (s, 3H), 2.44 - 2.32 (m, 5H), 1.71 - 1.60 (m, 2H) Example 408: 5-[2-methyl-5-[[(1S,5R,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]- 4-pyridyl]-N-pyridazin-4-yl-pyrazolo[1,5-a]pyridin-2-amine. (21 mg, 16%) was prepared as described in Example 116, Step C except 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N- pyridazin-4-yl-pyrazolo[1,5-a]pyridin-2-amine (Example 368, 170 mg, 0.27 mmol) was used 412

instead of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4-yl)-N- (1-(difluoromethyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-2 -amine. MS (ESI): mass calcd. for C ₂₅ H ₂₇ N ₇ O ₂ , 457.2; m/z found, 458.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 9.99 (br. s., 1H), 9.18 (d, J = 2.4 Hz, 1H), 8.84 (d, J = 6.0 Hz, 1H), 8.61 (d, J = 7.2 Hz, 1H), 8.24 - 8.15 (m, 2H), 7.87 (dd, J = 2.8, 6.0 Hz, 1H), 7.41 (s, 1H), 7.25 (dd, J = 1.6, 7.2 Hz, 1H), 6.23 (s, 1H), 4.80 - 4.65 (m, 1H), 3.84 - 3.76 (m, 2H), 3.53 - 3.47 (m, 2H), 2.66 - 2.60 (m, 2H), 2.46 (s, 3H), 2.44 - 2.30 (m, 5H), 1.69 - 1.56 (m, 2H) Example 409: N-methyl-2-[[5-[2-methyl-5-[[(1S,5R,7s)-9-methyl-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-yl]amino]pyridine-4- carboxamide. p (18 mg, 23%) was prepared as described in Example 116 except 2- bromo-N-methylisonicotinamide (398 mg, 1.85 mmol) was used instead of 4-bromo-1- (difluoromethyl)-1H-pyrazole in Step A. MS (ESI): mass calcd. for C ₂₈ H ₃₁ N ₇ O ₃ , 513.2; m/z found, 514.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.99 (s, 1H), 8.64 - 8.56 (m, 1H), 8.50 (d, J = 7.2 Hz, 1H), 8.31 (d, J = 5.2 Hz, 1H), 8.19 (s, 1H), 8.15 (s, 1H), 7.63 (s, 1H), 7.39 (s, 1H), 7.19 (d, J = 7.6 Hz, 1H), 7.11 (d, J = 5.2 Hz, 1H), 6.85 (s, 1H), 4.74 - 4.63 (m, 1H), 3.80 (d, J = 10.4 Hz, 2H), 3.51 (d, J = 10.4 Hz, 2H), 2.79 (d, J = 4.0 Hz, 3H), 2.67 - 2.60 (m, 2H), 2.46 (s, 3H), 2.42 - 2.33 (m, 5H), 1.69 - 1.58 (m, 2H). Example 410: 5-[2-methyl-5-[[(1R,5S,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]- 4-pyridyl]-N-(2-methylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin- 2-amine. 413

mg, 41%) was prepared as described in Example 116, Step C except 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N-(2- methylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine (Example 372, 70 mg, 0.15 mmol) was used instead of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4- yl)-N-(1-(difluoromethyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyr idin-2-amine. MS (ESI): mass calcd. for C ₂₆ H ₂₉ N ₇ O ₂ , 471.2; m/z found, 472.3 [M+H] ⁺ . ¹ H NMR (400 MHz, CD ₃ OD) δ 8.38 (d, J = 7.2 Hz, 1H), 8.22 - 8.17 (m, 2H), 8.10 (s, 1H), 7.41 (s, 1H), 7.22 (dd, J = 2.0, 7.2 Hz, 1H), 7.17 (d, J = 4.8 Hz, 1H), 6.84 (s, 1H), 4.73 - 4.67 (m, 1H), 3.95 (d, J = 10.0 Hz, 2H), 3.68 (d, J = 10.8 Hz, 2H), 2.70 (d, J = 5.6 Hz, 2H), 2.55 (s, 3H), 2.53 - 2.46 (m, 8H), 1.81 (d, J = 16.0 Hz, 2H). Example 411: 5-[2-methyl-5-[[(1S,5R,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]- 4-pyridyl]-N-[5-(trifluoromethyl)-2-pyridyl]pyrazolo[1,5-a]p yridin-2-amine. mg, 56%) was prepared as described in Example 116, Step C except 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N-[5- (trifluoromethyl)-2-pyridyl]pyrazolo[1,5-a]pyridin-2-amine (Example 374, 50 mg, 0.10 mmol) was used instead of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 - 414

methylpyridin-4-yl)-N-(1-(difluoromethyl)-1H-pyrazol-4-yl )pyrazolo[1,5-a]pyridin-2-amine. MS (ESI): mass calcd. for C27H27F3N6O2, 524.2; m/z found, 525.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.44 (s, 1H), 8.58 (s, 1H), 8.54 (d, J = 7.2 Hz, 1H), 8.22 - 8.19 (m, 2H), 7.96 (dd, J = 2.4, 8.8 Hz, 1H), 7.46 (d, J = 8.8 Hz, 1H), 7.40 (s, 1H), 7.24 (dd, J = 2.0, 7.2 Hz, 1H), 6.86 (s, 1H), 4.73 - 4.67 (m, 1H), 3.84 - 3.77 (m, 2H), 3.51 (d, J = 10.6 Hz, 2H), 2.63 (d, J = 6.0 Hz, 2H), 2.46 (s, 3H), 2.43 - 2.36 (m, 5H), 1.64 (d, J = 14.8 Hz, 2H). ¹⁹ F NMR (376 MHz, DMSO-d ₆ ) δ - 59.59 (s, 3F). Example 412: N-(3-fluoro-1-methyl-pyrazol-4-yl)-5-[2-methyl-5-[[(1S,5R,7s )-9-methyl-3-oxa- 9-azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a] pyridin-2-amine. 67 mg, 46%) was prepared as described in Example 116, Step C except N-(3-fluoro-1-methyl-pyrazol-4-yl)-5-[2-methyl-5-[[(1S,5R,7s )-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-amine (Example 398, 1.75 g, 3.78 mmol) was used instead of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)- 2-methylpyridin-4-yl)-N-(1-(difluoromethyl)-1H-pyrazol-4-yl) pyrazolo[1,5-a]pyridin-2-amine. MS (ESI): mass calcd. for C ₂₅ H ₂₈ FN ₇ O ₂ , 477.2; m/z found, 478.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.22 (d, J = 7.2 Hz, 1H), 8.16 (s, 1H), 7.86 (d, J = 0.8 Hz, 1H), 7.58 (d, J = 2.0 Hz, 1H), 7.20 (s, 1H), 7.03 (dd, J = 2.0, 7.2 Hz, 1H), 5.82 (s, 1H), 5.56 (s, 1H), 4.62 - 4.56 (m,1H), 4.02 - 3.92 (m, 2H), 3.78 (s, 3H), 3.68 - 3.57 (m, 2H), 2.75 - 2.66 (m, 2H), 2.54 (s, 3H), 2.53 (s, 3H), 2.48 - 2.35 (m, 2H), 1.86 - 1.76 (m, 2H). ¹⁹ F NMR (376 MHz, CDCl3) δ -138.46 (s, 1F). Example 413: 5-[2-methyl-5-[[(1R,5S,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]- 4-pyridyl]-N-[4-(trifluoromethyl)-2-pyridyl]pyrazolo[1,5-a]p yridin-2-amine. 415

(21 mg, 40%) was prepared as described in Example 116, Step C except 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N-[4- (trifluoromethyl)-2-pyridyl]pyrazolo[1,5-a]pyridin-2-amine (Example 378, 50 mg, 0.10 mmol) was used instead of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 - methylpyridin-4-yl)-N-(1-(difluoromethyl)-1H-pyrazol-4-yl)py razolo[1,5-a]pyridin-2-amine. MS (ESI): mass calcd. for C ₂₇ H ₂₇ F ₃ N ₆ O ₂ , 524.2; m/z found, 525.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.30 (s, 1H), 8.55 (d, J = 7.2 Hz, 1H), 8.48 (d, J = 5.2 Hz, 1H), 8.25 - 8.14 (m, 2H), 7.68 (s, 1H), 7.40 (s, 1H), 7.22 (d, J = 7.2 Hz, 1H), 7.10 (d, J = 5.2 Hz, 1H), 6.81 (s, 1H), 4.75 - 4.61 (m, 1H), 3.80 (d, J=10.4 Hz, 2H), 3.52 (d, J = 10.8 Hz, 2H), 2.74 - 2.61 (m, 2H), 2.46 (s, 3H), 2.41 (s, 3H), 2.39 - 2.28 (m, 2H), 1.65 (d, J = 14.8 Hz, 2H). ¹⁹ F NMR (376 MHz, DMSO-d6) δ -63.8 (s, 3F). Example 414: 5-[2-methyl-5-[[(1R,5S,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]- 4-pyridyl]-N-(1-methyltriazol-4-yl)pyrazolo[1,5-a]pyridin-2- amine. (18 mg, 36%) was prepared as described in Example 116, Step C except 5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N-(1- methyltriazol-4-yl)pyrazolo[1,5-a]pyridin-2-amine (Example 380, 50 mg, 0.10 mmol) was used 416

instead of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4-yl)-N- (1-(difluoromethyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-2 -amine. MS (ESI): mass calcd. for C ₂₄ H ₂₈ N ₈ O ₂ , 460.2; m/z found, 461.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 9.49 (s, 1H), 8.46 (d, J = 7.2 Hz, 1H), 8.18 (s, 1H), 8.08 (s, 1H), 7.65 (s, 1H), 7.38 (s, 1H), 7.12 (dd, J = 2.0, 7.2 Hz, 1H), 6.22 (s, 1H), 4.77 - 4.60 (m, 1H), 4.04 (s, 3H), 3.86 - 3.71 (m, 2H), 3.60 - 3.47 (m, 2H), 2.69 - 2.58 (m, 2H), 2.45 (s, 3H), 2.43 - 2.34 (m, 5H), 1.72 - 1.56 (m, 2H). Example 415: 5-[2-methyl-5-[[(1S,5R,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]- 4-pyridyl]-N-pyrimidin-5-yl-pyrazolo[1,5-a]pyridin-2-amine. 8 mg, 25%) was prepared as described in Example 116 except 5- bromopyrimidine (123 mg, 0.78 mmol) was used instead of 4-bromo-1-(difluoromethyl)-1H- pyrazole in Step A. MS (ESI): mass calcd. for C25H27N7O2, 457.2; m/z found, 458.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CD ₃ CN) δ 9.01 (s, 2H), 8.67 (s, 1H), 8.38 (d, J = 7.2 Hz, 1H), 8.18 (s, 1H), 8.02 (s, 1H), 7.60 (s, 1H), 7.31 (s, 1H), 7.16 (dd, J = 2.0, 7.2 Hz, 1H), 6.12 (s, 1H), 4.74 - 4.65 (m, 1H), 4.04 - 3.87 (m, 2H), 3.66 - 3.51 (m, 2H), 2.85 - 2.73 (m, 2H), 2.59 - 2.42 (m, 8H), 1.88 - 1.79 (m, 2H). Example 416: 5-[2-methyl-5-[[(1S,5R,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]- 4-pyridyl]-N-(5-methylpyrazin-2-yl)pyrazolo[1,5-a]pyridin-2- amine. 417

48%) was prepared as described in Example 116, Step C except 5- [2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl ]oxy]-4-pyridyl]-N-(5- methylpyrazin-2-yl)pyrazolo[1,5-a]pyridin-2-amine (Example 381, 40 mg, 0.09 mmol) was used instead of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4-yl)-N- (1-(difluoromethyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-2 -amine. MS (ESI): mass calcd. for C ₂₆ H ₂₉ N ₇ O ₂ , 471.2; m/z found, 472.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.07 (s, 1H), 8.57 (d, J = 1.2 Hz, 1H), 8.52 (d, J = 7.2 Hz, 1H), 8.19 (s, 1H), 8.17 (d, J = 1.2 Hz, 1H), 8.12 (s, 1H), 7.39 (s, 1H), 7.20 (dd, J = 2.0, 7.2 Hz, 1H), 6.77 (s, 1H), 4.77 - 4.63 (m, 1H), 3.87 - 3.75 (m, 2H), 3.57 - 3.46 (m, 2H), 2.63 (d, J = 6.4 Hz, 2H), 2.46 (s, 3H), 2.44 - 2.34 (m, 8H), 1.69 - 1.58 (m, 2H). Example 417: N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[[(1S,5R,7s)-9- methyl-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-amine. mg, 36%) was prepared as described in Example 116, Step C except N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[[(1S,5R,7s)-3- oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-amine (Example 382, 100 mg, 0.21 mmol) was used instead of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- 418

yl)oxy)-2-methylpyridin-4-yl)-N-(1-(difluoromethyl)-1H-py razol-4-yl)pyrazolo[1,5-a]pyridin-2- amine. MS (ESI): mass calcd. for C27H31N7O2, 485.3; m/z found, 486.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.20 (s, 1H), 8.54 (d, J = 7.2 Hz, 1H), 8.21 (s, 1H), 8.19 (s, 1H), 7.41 (s, 1H), 7.24 (dd, J = 1.6, 7.2 Hz, 1H), 7.03 (br. s, 1H), 6.81 (br. s, 1H), 4.75 - 4.65 (m, 1H), 3.85 - 3.75 (m, 2H), 3.58 - 3.48 (m, 2H), 2.66 - 2.61 (m, 2H), 2.48 - 2.44 (m, 6H), 2.44 - 2.36 (m, 5H), 2.30 (s, 3H), 1.69 - 1.59 (m, 2H). Example 418: 5-[2-methyl-5-[[(1S,5R,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]- 4-pyridyl]-N-pyrazin-2-yl-pyrazolo[1,5-a]pyridin-2-amine. (48 mg, 51%) was prepared as described in Example 116, Step C except 5-[2-methyl-5-[[(1S,5R,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N- pyrazin-2-yl-pyrazolo[1,5-a]pyridin-2-amine (Example 392, 90 mg, 0.20 mmol) was used instead of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4-yl)-N- (1-(difluoromethyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-2 -amine. MS (ESI): mass calcd. for C ₂₅ H ₂₇ N ₇ O ₂ , 457.2; m/z found, 458.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.27 (s, 1H), 8.65 (d, J = 1.2 Hz, 1H), 8.54 (d, J = 7.6 Hz, 1H), 8.23 (dd, J = 1.2 Hz, 2.4 Hz, 1H), 8.21 - 8.16 (m, 2H), 8.01 (d, J = 2.8 Hz, 1H), 7.39 (s, 1H), 7.22 (dd, J = 2.0, 7.2 Hz, 1H), 6.84 (s, 1H), 4.74 - 4.66 (m, 1H), 3.85 - 3.75 (m, 2H), 3.51 (d, J = 10.8 Hz, 2H), 2.66 - 2.60 (m, 2H), 2.46 (s, 3H), 2.43 - 2.35 (m, 5H), 1.64 (d, J = 15.2 Hz, 2H). Example 419: 5-[2-methyl-5-[[(1R,5S,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]- 4-pyridyl]-N-pyridazin-3-yl-pyrazolo[1,5-a]pyridin-2-amine. 419

(33 mg, 6%) was prepared as described in Example 116, Step C except 5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N- pyridazin-3-yl-pyrazolo[1,5-a]pyridin-2-amine (Example 394, 500 mg, 1.13 mmol) was used instead of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4-yl)-N- (1-(difluoromethyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-2 -amine. MS (ESI): mass calcd. for C ₂₅ H ₂₇ N ₇ O ₂ , 457.2; m/z found, 458.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.17 (s, 1H), 8.72 (d, J = 4.4 Hz, 1H), 8.53 (d, J = 7.2 Hz, 1H), 8.24 (s, 1H), 8.20 (s, 1H), 7.66 - 7.58 (m, 1H), 7.55 - 7.48 (m, 1H), 7.40 (s, 1H), 7.21 (dd, J=1.2, 7.2 Hz, 1H), 6.88 (s, 1H), 4.75 - 4.66 (m, 1H), 3.81 (d, J = 10.4 Hz, 2H), 3.52 (d, J = 10.8 Hz, 2H), 2.71 - 2.60 (m, 2H), 2.46 (s, 3H), 2.44 - 2.32 (m, 5H), 1.65 (d, J = 14.8 Hz, 2H). Example 420: 5-[2-methyl-5-[[(1R,5S,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]- 4-pyridyl]-N-pyrimidin-4-yl-pyrazolo[1,5-a]pyridin-2-amine. (11 mg, 5%) was prepared as described in Example 116, Step C except 5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N- pyrimidin-4-yl-pyrazolo[1,5-a]pyridin-2-amine (Example 395, 200 mg, 0.45 mmol) was used 420

instead of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4-yl)-N- (1-(difluoromethyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-2 -amine. MS (ESI): mass calcd. for C ₂₅ H ₂₇ N ₇ O ₂ , 457.2; m/z found, 458.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.42 (s, 1H), 8.71 (s, 1H), 8.55 (d, J = 7.2 Hz, 1H), 8.37 (d, J = 6.0 Hz, 1H), 8.20 (s, 2H), 7.39 (s, 1H), 7.36 - 7.28 (m, 1H), 7.25 (dd, J = 2.0, 7.2 Hz, 1H), 6.82 (s, 1H), 4.74 - 4.66 (m, 1H), 3.84 - 3.75 (m, 2H), 3.58 - 3.43 (m, 2H), 2.66 - 2.60 (m, 2H), 2.46 (s, 3H), 2.45 - 2.34 (m, 6H), 1.68 - 1.59 (m, 2H). Example 421: 5-[2-methyl-5-[[(1R,5S,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]- 4-pyridyl]-N-(6-methylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin- 2-amine. 47 mg, 15%) was prepared as described in Example 116, Step C except 5-[2-methyl-5-[[(1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4-pyridyl]-N-(6- methylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine (Example 396, 300 mg, 0.66 mmol) was used instead of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4- yl)-N-(1-(difluoromethyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyr idin-2-amine. MS (ESI): mass calcd. for C ₂₆ H ₂₉ N ₇ O ₂ , 471.2; m/z found, 472.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.30 (s, 1H), 8.59 (s, 1H), 8.55 (d, J = 7.2 Hz, 1H), 8.20 (s, 1H), 8.19 - 8.16 (m, 1H), 7.39 (s, 1H), 7.24 (dd, J = 1.6, 6.8 Hz, 1H), 7.16 (s, 1H), 6.81 (s, 1H), 4.77 - 4.62 (m, 1H), 3.88 - 3.74 (m, 2H), 3.59 - 3.46 (m, 2H), 2.76 - 2.60 (m, 2H), 2.46 (s, 3H), 2.45 - 2.36 (m, 5H), 2.34 (s, 3H), 1.74 - 1.57 (m, 2H). 421

Example 422: 2,2,2-trifluoro-1-[1-methyl-4-[[5-[2-methyl-5-[[(1S,5R,7s)-9 -methyl-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-yl]amino]pyrazol-3- yl]ethanol. S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-1-meth yl-1H-pyrazol-3-yl)-2,2,2- trifluoroethan-1-one. A portion of the crude mixture (~80 mg) from Example 123 was found to contain both the title compound and 7-endo-5-[2-methyl-5-[[(1S,5R)-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]-N-(1-methylpyraz ol-4-yl)pyrazolo[1,5-a]pyridin-2- amine (Example 123). Step B: 2,2,2-trifluoro-1-[1-methyl-4-[[5-[2-methyl-5-[[(1S,5R,7s)-9 -methyl-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2-yl]amino]pyrazol-3- yl]ethanol. The crude mixture from Step A (~80 mg) was methylated using conditions found in Example 116, Step C (the crude mixture from Example 422, Step A was used instead of 5-(5- (((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2-meth ylpyridin-4-yl)-N-(1- (difluoromethyl)-1H-pyrazol-4-yl)pyrazolo[1,5-a]pyridin-2-am ine) to give the title compound (6.5 mg, 6%). MS (ESI): mass calcd. for C27H30F3N7O3, 557.2; m/z found, 558.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 8.44 (dd, J = 7.2, 0.9 Hz, 1H), 8.21 (s, 1H), 8.07 (s, 1H), 7.87 (d, J = 0.8 Hz, 1H), 7.75 (d, J = 1.8 Hz, 1H), 7.48 (d, J = 0.8 Hz, 1H), 7.25 (s, 1H), 7.19 (dd, J = 7.2, 2.0 Hz, 1H), 6.79 (s, 1H), 5.57 (d, J = 7.4 Hz, 1H), 4.66 (s, 1H), 3.81 (s, 3H), 3.73 (d, J = 10.7 Hz, 2H), 3.39 (t, J = 10.3 Hz, 2H), 2.63 (t, J = 1.9 Hz, 2H), 2.46 (s, 3H), 2.41 – 2.34 (m, 5H), 1.63 (t, J = 13.6 Hz, 2H). 422

Example 423: 5-[2-methyl-5-[[(1S,5R,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]- 4-pyridyl]-N-(1-methylpyrazol-3-yl)pyrazolo[1,5-a]pyridin-2- amine. mg, 55%) was prepared as described in Example 116, Step C except endo-5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)o xy)-2-methylpyridin-4-yl)- N-(1-methyl-1H-pyrazol-3-yl)pyrazolo[1,5-a]pyridin-2-amine (Example 125, 105 mg, 0.24 mmol) was used instead of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 - methylpyridin-4-yl)-N-(1-(difluoromethyl)-1H-pyrazol-4-yl)py razolo[1,5-a]pyridin-2-amine. MS (ESI): mass calcd. for C25H29N7O2, 459.2; m/z found, 461.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.02 (s, 1H), 8.42 – 8.36 (m, 1H), 8.19 (s, 1H), 8.07 – 8.00 (m, 1H), 7.49 (d, J = 2.1 Hz, 1H), 7.37 (s, 1H), 7.08 (dd, J = 7.3, 2.0 Hz, 1H), 6.37 – 6.30 (m, 1H), 6.08 (d, J = 2.2 Hz, 1H), 4.71 – 4.59 (m, 1H), 3.79 (dd, J = 10.7, 2.5 Hz, 2H), 3.74 (s, 3H), 3.50 (d, J = 10.7 Hz, 2H), 2.66 – 2.58 (m, 2H), 2.45 (s, 3H), 2.44 – 2.35 (m, 5H), 1.69 – 1.57 (m, 2H). Example 424: 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-[5 - (trifluoromethyl)-2-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. .6 mg, 14.4%). was prepared by the similar method of Example 116 Step A and Step B. In step A, 2-bromo-5-(trifluoromethyl)pyridine was used instead of 4- bromo-1-(difluoromethyl)-1H-pyrazole and (S)-tert-butyl 2-(((4-(2-aminopyrazolo[1,5-a]pyridin- 423 5-yl)-6-methylpyridin-3-yl)oxy)methyl)morpholine-4-carboxyla te (Intermediate 13) instead of tert-butyl (1R,5S,7s)-7-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-meth ylpyridin-3-yl)oxy)-3- oxa-9-azabicyclo[3.3.1]nonane-9-carboxylate ( Intermediate 9) to afford the title compound. MS (ESI): mass calcd. for C ₂₄ H ₂₃ F ₃ N ₆ O ₂ , 484.2; m/z found, 485.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CD3OD) δ 8.48 (s, 1H), 8.41 (d, J = 7.2 Hz, 1H), 8.21 (s, 1H), 7.83 (dd, J = 2.4, 8.8 Hz, 1H), 7.80 (s, 1H), 7.42 (d, J = 9.2 Hz, 1H), 7.36 (s, 1H), 7.03 (dd, J = 1.6, 7.2 Hz, 1H), 6.86 (s, 1H), 4.13 (d, J = 4.8 Hz, 2H), 3.96 - 3.87 (m, 1H), 3.86 - 3.78 (m, 1H), 3.71 - 3.57 (m, 1H), 2.96 - 2.87 (m, 1H), 2.83 - 2.77 (m, 2H), 2.75 - 2.66 (m, 1H), 2.52 (s, 3H) ¹⁹ F NMR (376 MHz, CD3OD) δ -62.90 (s, 3F) Example 425: 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-(5 -methyl-2- pyridyl)pyrazolo[1,5-a]pyridin-2-amine. The title compound (29 mg, 8%) was prepared by the similar method of Example 116 Step A and Step B. In step A, 2-bromo-5-methylpyridine was used instead of 4-bromo-1- (difluoromethyl)-1H-pyrazole and (S)-tert-butyl 2-(((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)methyl)morpholine-4-carboxylate (Intermediate 13) instead of tert-butyl (1R,5S,7s)-7-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-meth ylpyridin-3-yl)oxy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate ( Intermediate 9) to afford the title compound. MS (ESI): mass calcd. for C24H26N6O2, 430.2; m/z found, 431.3 [M+H] ⁺ . ¹ H NMR (400 MHz, CD ₃ CN) δ 8.34 (d, J = 7.2 Hz, 1H), 8.25 (s, 1H), 8.07 (d, J = 1.6 Hz, 1H), 7.95 (s, 1H), 7.76 - 7.66 (m, 1H), 7.47 (dd, J = 2.4, 8.4 Hz, 1H), 7.30 (d, J = 8.4 Hz, 1H), 7.26 (s, 1H), 6.96 (dd, J = 2.0, 7.2 Hz, 1H), 6.72 (s, 1H), 4.12 - 3.98 (m, 2H), 3.83 - 3.75 (m, 1H), 3.74 - 3.66 (m, 1H), 3.57 - 3.43 (m, 1H), 2.85 (dd, J = 2.4, 12.0 Hz, 1H), 2.73 - 2.66 (m, 2H), 2.59 (dd, J = 10.4, 12.0 Hz, 1H), 2.47 (s, 3H), 2.23 (s, 3H). 424 Example 426: 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-(6 -methyl-2- pyridyl)pyrazolo[1,5-a]pyridin-2-amine. The title compound (46 mg, 15%) was prepared by the similar method of Example 116 Step A and Step B. In step A, 2-bromo-6-methylpyridine was used instead of 4-bromo-1- (difluoromethyl)-1H-pyrazole and (S)-tert-butyl 2-(((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)methyl)morpholine-4-carboxylate (Intermediate 13) instead of tert-butyl (1R,5S,7s)-7-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-meth ylpyridin-3-yl)oxy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate ( Intermediate 9) to afford the title compound. MS (ESI): mass calcd. for C ₂₄ H ₂₆ N ₆ O ₂ , 430.2; m/z found, 431.0 [M+H] ⁺ . ¹ H NMR (400 MHz, CD ₃ CN) δ 8.35 (d, J = 7.2 Hz, 1H), 8.26 (s, 1H), 7.89 (s, 1H), 7.77 (d, J = 1.2 Hz, 1H), 7.58 - 7.43 (m, 1H), 7.27 (s, 1H), 7.14 (d, J = 8.0 Hz, 1H), 6.97 (dd, J = 2.0, 7.2 Hz, 1H), 6.86 (s, 1H), 6.70 (d, J = 7.2 Hz, 1H), 4.12 - 3.98 (m, 2H), 3.85 - 3.76 (m, 1H), 3.75 - 3.66 (m, 1H), 3.59 - 3.47 (m, 1H), 2.85 (dd, J = 2.4, 12.0 Hz, 1H), 2.74 - 2.67 (m, 2H), 2.60 (dd, J = 10.4, 12.0 Hz, 1H), 2.48 (s, 3H), 2.43 (s, 3H). Example 427: 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-(4 -methyl-2- pyridyl)pyrazolo[1,5-a]pyridin-2-amine. The title compound (58 mg, 24%) was prepared by the similar method of Example 116 Step A and Step B. In step A, 2-bromo-4-methylpyridine was used instead of 4-bromo-1- (difluoromethyl)-1H-pyrazole and (S)-tert-butyl 2-(((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)methyl)morpholine-4-carboxylate (Intermediate 13) instead of tert-butyl (1R,5S,7s)-7-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-meth ylpyridin-3-yl)oxy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate ( Intermediate 9) to afford the title compound. MS (ESI): mass calcd. for C ₂₄ H ₂₆ N ₆ O ₂ , 430.2; m/z found, 431.3 [M+H] ⁺ . ¹ H NMR (400 MHz, CD3CN) δ 8.35 (d, J = 7.2 Hz, 1H), 8.26 (s, 1H), 8.09 (d, J = 5.2 Hz, 1H), 7.93 (s, 1H), 7.73 (d, J = 1.2 Hz, 1H), 7.26 (s, 1H), 7.20 (s, 1H), 6.98 (dd, J = 2.0, 7.2 Hz, 1H), 6.77 (s, 1H), 6.69 (d, J = 4.8 Hz, 1H), 4.11 - 4.00 (m, 2H), 3.79 (td, J = 2.4, 11.2 Hz, 1H), 3.75 - 3.67 (m, 1H), 3.56 - 3.45 (m, 1H), 2.85 (dd, J = 2.4, 12.4 Hz, 1H), 2.73 - 2.67 (m, 2H), 2.59 (dd, J = 10.4, 12.4 Hz, 1H), 2.47 (s, 3H), 2.31 (s, 3H). Example 428: 5-[2-methyl-5-[[(2R)-morpholin-2-yl]methoxy]-4-pyridyl]-N-(2 - pyridyl)pyrazolo[1,5-a]pyridin-2-amine. T he title compound (90 mg, 38%) was prepared by the similar method of Example 116 Step A and Step B. In step A, 2-bromopyridine was used instead of 4-bromo-1-(difluoromethyl)- 1H-pyrazole and (S)-tert-butyl 2-(((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin- 3- yl)oxy)methyl)morpholine-4-carboxylate (Intermediate 13) instead of tert-butyl (1R,5S,7s)-7- ((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-y l)oxy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate ( Intermediate 9) to afford the title compound. MS (ESI): mass calcd. for C23H24N6O2, 416.2; m/z found, 417.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 9.77 (s, 1H), 8.54 (dt, J = 7.2, 1.0 Hz, 426

1H), 8.32 (s, 1H), 8.21 (ddd, J = 5.0, 2.0, 0.8 Hz, 1H), 7.82 (dd, J = 2.0, 0.9 Hz, 1H), 7.62 (ddd, J = 9.0, 7.1, 2.0 Hz, 1H), 7.36 – 7.30 (m, 2H), 7.00 (dd, J = 7.2, 2.0 Hz, 1H), 6.85 (d, J = 0.8 Hz, 1H), 6.80 (ddd, J = 7.2, 4.9, 1.0 Hz, 1H), 4.14 – 4.05 (m, 2H), 3.77 – 3.72 (m, 1H), 3.67 (dtd, J = 10.0, 4.9, 2.4 Hz, 1H), 3.44 (td, J = 10.6, 3.6 Hz, 1H), 2.81 (dd, J = 12.1, 2.4 Hz, 1H), 2.68 – 2.59 (m, 2H), 2.46 (s, 3H). Example 429: 5-[2-methyl-5-[[(2R)-morpholin-2-yl]methoxy]-4-pyridyl]-N-(1 -methylpyrazol- 3-yl)pyrazolo[1,5-a]pyridin-2-amine. mg, 80%) was prepared by the similar method of Example 116 Step A and Step B. In step A, 3-bromo-1-methyl-1H-pyrazole was used instead of 4-bromo-1- (difluoromethyl)-1H-pyrazole and (S)-tert-butyl 2-(((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)methyl)morpholine-4-carboxylate (Intermediate 13) instead of tert-butyl (1R,5S,7s)-7-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-meth ylpyridin-3-yl)oxy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate ( Intermediate 9) to afford the title compound. MS (ESI): mass calcd. for C22H25N7O2, 419.2; m/z found, 420.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 9.05 (s, 1H), 8.44 (dd, J = 7.2, 0.9 Hz, 1H), 8.30 (s, 1H), 7.73 (dd, J = 2.1, 0.9 Hz, 1H), 7.49 (d, J = 2.2 Hz, 1H), 7.33 (s, 1H), 6.91 (dd, J = 7.2, 2.0 Hz, 1H), 6.41 (d, J = 0.8 Hz, 1H), 6.06 (d, J = 2.2 Hz, 1H), 4.12 – 4.03 (m, 2H), 3.73 (s, 3H), 3.67 (dtd, J = 10.0, 4.8, 2.4 Hz, 1H), 3.44 (td, J = 10.6, 3.7 Hz, 1H), 2.80 (dd, J = 12.1, 2.4 Hz, 1H), 2.69 – 2.60 (m, 2H), 2.45 (s, 3H). 427

Example 430: 5-[2-methyl-5-[[(2R)-morpholin-2-yl]methoxy]-4-pyridyl]-N-py razin-2-yl- pyrazolo[1,5-a]pyridin-2-amine. (80 mg, 4%) was prepared by the similar method of Example 116 Step A and Step B. In step A, 2-chloropyrazine was used instead of 4-bromo-1-(difluoromethyl)- 1H-pyrazole and (S)-tert-butyl 2-(((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin- 3- yl)oxy)methyl)morpholine-4-carboxylate (Intermediate 13) instead of tert-butyl (1R,5S,7s)-7- ((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-y l)oxy)-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate ( Intermediate 9) to afford the title compound. MS (ESI): mass calcd. for C ₂₂ H ₂₃ N ₇ O ₂ , 417.2; m/z found, 418.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.26 (s, 1H), 8.65 (s, 1H), 8.59 (d, J = 7.3 Hz, 1H), 8.33 (s, 1H), 8.22 (d, J = 2.3 Hz, 1H), 8.01 (d, J = 2.8 Hz, 1H), 7.86 (d, J = 1.9 Hz, 1H), 7.35 (s, 1H), 7.05 (dd, J = 7.4, 2.0 Hz, 1H), 6.90 (s, 1H), 4.10 (d, J = 4.3 Hz, 2H), 3.76 (d, J = 11.1 Hz, 1H), 3.72 – 3.64 (m, 1H), 3.51 – 3.40 (m, 1H), 2.82 (d, J = 11.8 Hz, 1H), 2.70 – 2.59 (m, 2H), 2.46 (s, 3H). Example 431: 5-[2-methyl-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-py razin-2-yl- pyrazolo[1,5-a]pyridin-2-amine. 8

The title compound (82 mg, 62%) was prepared by the similar method of Example 430 except using the (S) enantiomer. MS (ESI): mass calcd. for C22H23N7O2, 417.2; m/z found, 418.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 10.26 (s, 1H), 8.65 (d, J = 1.4 Hz, 1H), 8.59 (dd, J = 7.2, 1.0 Hz, 1H), 8.33 (s, 1H), 8.22 (dd, J = 2.8, 1.4 Hz, 1H), 8.01 (dd, J = 2.7, 1.1 Hz, 1H), 7.87 (d, J = 2.0 Hz, 1H), 7.36 (s, 1H), 7.08 – 6.99 (m, 1H), 6.90 (d, J = 1.0 Hz, 1H), 4.10 (dd, J = 5.1, 2.8 Hz, 2H), 3.79 – 3.73 (m, 1H), 3.68 (d, J = 9.1 Hz, 1H), 3.49 – 3.41 (m, 1H), 2.82 (d, J = 12.2 Hz, 1H), 2.71 – 2.60 (m, 2H), 2.47 (s, 3H). Example 432: N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[[(2S)-morpholi n-2-yl]methoxy]- 4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. 0 mg, 48%) was prepared by the similar method of Example 136 using (S)-morpholin-2-ylmethanol instead of endo-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride and N-(2,6-dimethylpyrimidin-4-yl)-5-(5-fluoro-2-methylpyridin-4 - yl)pyrazolo[1,5-a]pyridin-2-amine (Intermediate 15) instead of N-(5-(5-fluoro-2-methylpyridin- 4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (Intermediate 6). MS (ESI): mass calcd. for C ₂₄ H ₂₇ N ₇ O ₂ , 445.2; m/z found, 446.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 10.19 (s, 1H), 8.59 (d, J = 7.2 Hz, 1H), 8.32 (s, 1H), 7.92 (d, J = 1.1 Hz, 1H), 7.37 (s, 1H), 7.07 (dd, J = 7.2, 2.0 Hz, 1H), 7.00 (br s, 1H), 6.88 (br s, 1H), 4.10 (d, J = 4.8 Hz, 2H), 3.80 – 3.74 (m, 1H), 3.71 – 3.64 (m, 1H), 3.46 (td, J = 10.5, 3.8 Hz, 1H), 2.80 (dd, J = 12.0, 2.4 Hz, 1H), 2.70 – 2.60 (m, 2H), 2.56 – 2.51 (m, 1H), 2.46 (s, 3H), 2.46 (s, 3H), 2.30 (s, 3H). Example 433: N-[5-[5-[(3-aminooxetan-3-yl)methoxy]-2-prop-1-ynyl-4-pyridy l]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 429

g, 15%) was prepared by the similar method of Example 136 using (3-aminooxetan-3-yl)methanol instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride and N-(5-(5-fluoro-2-(prop-1-yn-1-yl)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (Intermediate 11) instead of N-(5-(5- fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cycl opropanecarboxamide (Intermediate 6). MS (ESI): mass calcd. for C ₂₃ H ₂₃ N ₅ O ₃ , 417.2; m/z found, 418.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.09 (s, 1H), 8.53 (d, J = 7.3 Hz, 1H), 8.48 (s, 1H), 7.96 (dd, J = 2.0, 0.9 Hz, 1H), 7.56 (s, 1H), 7.11 (dd, J = 7.3, 2.0 Hz, 1H), 6.87 (s, 1H), 4.45 (d, J = 6.1 Hz, 2H), 4.32 (d, J = 6.0 Hz, 2H), 4.27 (s, 2H), 2.22 (s, 2H), 2.07 (s, 3H), 1.98 – 1.87 (m, 1H), 0.89 – 0.75 (m, 4H). Example 434: N-[5-[5-[(3-fluoroazetidin-3-yl)methoxy]-2-prop-1-ynyl-4-pyr idyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. g, 33%) was prepared by the similar method of Example 136 using (3-fluoroazetidin-3-yl)methanol instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride and N-(5-(5-fluoro-2-(prop-1-yn-1-yl)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (Intermediate 11) instead of N-(5-(5- fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cycl opropanecarboxamide (Intermediate 6). MS (ESI): mass calcd. for C ₂₃ H ₂₂ FN ₅ O ₂ , 419.2; m/z found, 420.2 [M+H] ⁺ . ¹ H 430

NMR (400 MHz, DMSO-d6) δ 11.10 (s, 1H), 8.60 – 8.52 (m, 1H), 8.49 (s, 1H), 7.85 (dd, J = 2.0, 0.9 Hz, 1H), 7.56 (s, 1H), 7.04 (dd, J = 7.3, 2.0 Hz, 1H), 6.87 (s, 1H), 4.56 (d, J = 23.7 Hz, 2H), 3.59 (dd, J = 20.1, 9.7 Hz, 2H), 3.53 – 3.44 (m, 2H), 2.07 (s, 3H), 1.93 (qd, J = 7.7, 4.9 Hz, 1H), 0.82 (tt, J = 7.7, 3.0 Hz, 4H). Example 435: N-(5-(5-((1r,3r)-3-aminocyclobutoxy)-2-(prop-1-yn-1-yl)pyrid in-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. g, 19%) was prepared by the similar method of Example 136 using trans-3-aminocyclobutanol instead of endo-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride and N-(5-(5-fluoro-2-(prop-1-yn-1-yl)pyridin-4-yl)pyrazolo[1,5-a ]pyridin-2- yl)cyclopropanecarboxamide (Intermediate 11) instead of N-(5-(5-fluoro-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (Intermediate 6). MS (ESI): mass calcd. for C23H23N5O2, 401.2; m/z found, 402.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ11.09 (s, 1H), 8.56 (d, J = 7.2 Hz, 1H), 8.13 (s, 1H), 7.85 (d, J = 1.9 Hz, 1H), 7.53 (s, 1H), 7.07 (dd, J = 7.2, 2.0 Hz, 1H), 6.90 (s, 1H), 5.05 (tt, J = 6.9, 4.1 Hz, 1H), 3.55 (tt, J = 7.6, 5.2 Hz, 1H), 2.28 (ddd, J = 11.9, 7.6, 3.8 Hz, 2H), 2.20 – 2.10 (m, 2H), 2.06 (s, 3H), 1.92 (td, J = 7.6, 3.9 Hz, 1H), 0.90 – 0.77 (m, 4H). Example 436: N-[5-[5-[[(1S,5R)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl]oxy]-2 -prop-1-ynyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 431

g, 33%) was prepared by the similar method of Example 136 except N-(5-(5-fluoro-2-(prop-1-yn-1-yl)pyridin-4-yl)pyrazolo[1,5-a ]pyridin-2- yl)cyclopropanecarboxamide (Intermediate 11) instead of N-(5-(5-fluoro-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (Intermediate 6). MS (ESI): mass calcd. for C ₂₆ H ₂₇ N ₅ O ₃ , 457.2; m/z found, 458.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.08 (s, 1H), 8.52 (d, J = 7.3 Hz, 1H), 8.36 (s, 1H), 8.13 (dd, J = 2.0, 0.9 Hz, 1H), 7.55 (s, 1H), 7.19 (dd, J = 7.3, 2.1 Hz, 1H), 6.85 (s, 1H), 4.80 (t, J = 5.9 Hz, 1H), 3.63 – 3.48 (m, 4H), 2.96 – 2.88 (m, 2H), 2.36 – 2.25 (m, 2H), 2.06 (s, 2H), 1.92 (s, 1H), 1.70 (dd, J = 13.5, 5.1 Hz, 1H), 0.88 – 0.76 (m, 4H). Example 437: 5-[5-[(3-fluoroazetidin-3-yl)methoxy]-2-prop-1-ynyl-4-pyridy l]-N-(1- methylpyrazol-3-yl)pyrazolo[1,5-a]pyridin-2-amine. p . g, 12%) was prepared by the similar method of Example 136 using (3-fluoroazetidin-3-yl)methanol instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride and N-(5-(5-fluoro-2-(prop-1-yn-1-yl)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (Intermediate 19) instead of N-(5-(5- fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cycl opropanecarboxamide (Intermediate 6). MS (ESI): mass calcd. for C ₂₃ H ₂₂ FN ₇ O, 431.2; m/z found, 432.2 [M+H] ⁺ . ¹ H 432

NMR (400 MHz, DMSO-d6) δ 9.07 (s, 1H), 8.48 (s, 1H), 8.44 (dt, J = 7.2, 0.9 Hz, 1H), 7.69 (dd, J = 2.0, 0.9 Hz, 1H), 7.55 – 7.44 (m, 2H), 6.86 (dd, J = 7.1, 2.0 Hz, 1H), 6.40 (d, J = 0.9 Hz, 1H), 6.05 (d, J = 2.2 Hz, 1H), 4.55 (d, J = 23.7 Hz, 2H), 3.73 (s, 3H), 3.65 – 3.42 (m, 4H), 2.07 (s, 3H). Example 438: N-(1-methylpyrazol-3-yl)-5-[5-[[(1S,5R)-3-oxa-9-azabicyclo[3 .3.1]nonan-7- yl]oxy]-2-prop-1-ynyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-ami ne. g, 12%) was prepared by the similar method of Example 136 using N-(5-(5-fluoro-2-(prop-1-yn-1-yl)pyridin-4-yl)pyrazolo[1,5-a ]pyridin-2 yl)cyclopropanecarboxamide (Intermediate 19) instead of N-(5-(5-fluoro-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (Intermediate 6). MS (ESI): mass calcd. for C ₂₆ H ₂₇ N ₇ O ₂ , 469.2; m/z found, 470.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 9.04 (s, 1H), 8.42 – 8.37 (m, 1H), 8.36 (s, 1H), 7.91 (dd, J = 2.0, 0.9 Hz, 1H), 7.51 (s, 1H), 7.48 (d, J = 2.2 Hz, 1H), 7.00 (dd, J = 7.2, 2.0 Hz, 1H), 6.38 (d, J = 0.8 Hz, 1H), 6.05 (d, J = 2.2 Hz, 1H), 4.77 (q, J = 6.3 Hz, 1H), 3.73 (s, 3H), 3.61 – 3.47 (m, 4H), 2.94 (d, J = 8.2 Hz, 2H), 2.31 (dt, J = 14.3, 7.5 Hz, 3H), 2.06 (s, 3H), 1.68 (dd, J = 11.2, 4.7 Hz, 2H). Example 439: N-[5-[5-[[(1S,5R)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl]oxy]-2 -prop-1-ynyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 433

11%) was prepared by the similar method of Example 8 using endo-9-boc-7-hydroxy-3-oxa-9-azabicyclo[331]nonane was used instead of (2S,4R)-tert- butyl 4-hydroxy-2-(trifluoromethyl) luoro-2-(prop-1-yn-1- yl)pyridin-4-yl)pyrazolo[1,5-a]pyrid ermediate 11) instead of N-(5-(2-cyano-5-fluoropyridin-4 opanecarboxamide to afford the title compound. MS (ESI m/z found, 458.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMS 0.9 Hz, 1H), 8.40 (s, 1H), 7.85 (dd, J = 2.0, 0.9 Hz, 1H), 1H), 6.89 (s, 1H), 5.45 (tt, J = 11.0, 6.0 Hz, 1H), 3.75 – 3.68 (m, 2H), 3.62 (dt, J = 10.9, 2.3 Hz, 2H), 2.93 (s, 2H), 2.30 – 2.21 (m, 2H), 2.06 (s, 3H), 1.93 (p, J = 7.5 Hz, 1H), 1.70 (ddd, J = 16.3, 8.3, 4.6 Hz, 2H), 0.82 (tt, J = 7.9, 3.0 Hz, 4H). Example 440: N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[[(1S,4S,7R)-2-oxa-5- azabicyclo[2.2.1]heptan-7-yl]oxy]-2-prop-1-ynyl-4-pyridyl]py razolo[1,5-a]pyridin-2-amine. N )-7-((6-chloro-4-(2-((2,6-dimethylpyrimidin-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)pyridin-3-yl)oxy)-2-oxa -5-azabicyclo[2.2.1]heptane-5- carboxylate. To a 20 mL vial charged 2-oxa-5- azabicyclo[2.2.1]heptane-5-carboxylate (115 mg, 0.534 mmol) and 2.1 mL DMA was added sodium tert-butoxide (256.7 mg, 2.67 mmol). The mixture was stirred at 50 °C for 5 min. Then, added 5-(2-chloro-5-fluoropyridin-4-yl)-N-(2,6-dimethylpyrimidin-4 -yl)pyrazolo[1,5-a]pyridin- 2-amine (197 mg, 0.534 mmol), then stirred at 50 °C for 20 min. The crude was partitioned between EtOAc/water/brine. The organic layer was collected, and dried over anh. Na2SO4, filtered, and concentrated down under vacuo. The crude was FCC 20-100% EtOAc (with 10% MeOH) / hexanes, 20 min gradient to afford the titled compound (421 mg, 57.4%). MS (ESI): mass calcd. for C28H30ClN7O4, 563.2; m/z found, 564.2 [M+H] ⁺ . Step B and Step C.5-(5-(((1S,4S,7R)-2-oxa-5-azabicyclo[2.2.1]heptan-7-yl)oxy )-2- (prop-1-yn-1-yl)pyridin-4-yl)-N-(2,6-dimethylpyrimidin-4-yl) pyrazolo[1,5-a]pyridin-2-amine. The title compound was prepared by the similar method of Step B in Example 441. In Step B, 5-(2-chloro-5-fluoropyridin-4-yl)-N-(2,6-dimethylpyrimidin-4 -yl)pyrazolo[1,5- a]pyridin-2-amine was used instead of (R)-N-(5-(2-chloro-5-((1-methylpyrrolidin-3- yl)methoxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopro panecarboxamide. The Boc- protecting group was also removed by adding 1.5 mL 1:10 TFA:DCM to the purified product from Step B. (20 mg, 2 steps, 21%). MS (ESI): mass calcd. for C ₂₆ H ₂₅ N ₇ O ₂ , 467.2; m/z found, 468.2 [M+H] ⁺ . ¹ H NMR (600 MHz, DMSO-d6) δ 10.20 (s, 1H), 8.61 (s, 1H), 8.60 – 8.57 (m, 1H), 7.83 – 7.78 (m, 1H), 7.54 (s, 1H), 7.06 – 6.96 (m, 2H), 6.84 (s, 1H), 4.97 (d, J = 2.3 Hz, 1H), 4.31 (s, 1H), 3.88 (dd, J = 7.3, 2.0 Hz, 1H), 3.74 (d, J = 7.2 Hz, 1H), 3.48 (t, J = 2.2 Hz, 1H), 3.14 – 3.05 (m, 1H), 2.80 (d, J = 10.5 Hz, 1H), 2.46 (s, 3H), 2.30 (s, 3H), 2.07 (s, 3H). Example 441: N-[5-[5-[[(3R)-1-methylpyrrolidin-3-yl]methoxy]-2-prop-1-yny l-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 435

Step A. (R)-N-(5-(2-chloro-5-((1-methylpyrrolidin-3-yl)methoxy)pyrid in-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. To a 100 mL rb flask was charged with N-[5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazolo[1 ,5-a]pyridin-2- yl]cyclopropanecarboxamide (Intermediate 3, 1349 mg, 4.082 mmol), (R)-2-chloro-4-iodo-5-((1- methylpyrrolidin-3-yl)methoxy)pyridine (1427 mg, 4.047 mmol), and PdCl2(dppf) (83 mg, 0.113 mmol) as solids. The flask was equipped with a septum then evac and backfilled with N ₂ (2x). 1,4-dioxane (13.49 mL, 0.3 M, 4.047 mmol) and tribasic potassium phosphate 0.5 M in water (10.704 mL, 0.5 M, 5.352 mmol) were then added. The flask was placed into a preheated 60 °C heating block for 1h. The reaction mixture was poured into 75 mL of stirring water. The resulting mixture was stirred for 30 min. Solids were collected by suction filtration and dried further using high vacuum at 65 °C for 2 h. MS (ESI): mass calcd. for C22H24ClN5O2, 425.2; m/z found, 426.2 [M+H] ⁺ . Step B. (R)-N-(5-(5-((1-methylpyrrolidin-3-yl)methoxy)-2-(prop-1-yn- 1-yl)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. To a 10 mL microwave vial was charged (R)-N-(5-(2-chloro-5-((1-methylpyrrolidin-3-yl)methoxy)pyrid in-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide (Step A) (145 mg, 0.34 mmol) and Bis(triphenylphosphine)palladium(II) dichloride (20 mg, 0.0285 mmol) as solids. The flask was evacuated and backfilled with argon (3x). A portion of 1,4-dioxane (1.1 mL, 0.3 M, 0.33 mmol) was added followed by a solution of tributyl(1-propynyl)tin (147 mg, 0.447 mmol) in the remainder of dioxane. The vial was immediately placed into a preheated 70 °C heating block. The dark brown solution was cooled to r.t. then transferred to a 50 mL recovery vial by diluting with ethylacetate (15 mL). 1.5 g celite was added then conc to dryness for FCC (0-10% 2M NH ₃ -MeOH/DCM (15 column volumes) to afford (50 mg, 34.2%). MS (ESI): mass calcd. for C25H27N5O2, 429.2; m/z found, 430.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.09 (s, 1H), 8.61 – 8.50 (m, 1H), 8.41 (s, 1H), 7.86 (d, J = 1.9 Hz, 1H), 7.52 (s, 1H), 7.05 (dd, J = 7.3, 2.0 Hz, 1H), 6.88 (s, 1H), 4.08 (d, J = 6.1 Hz, 2H), 2.53 (dt, J = 6.3, 3.1 Hz, 2H), 2.40 (ddt, J = 9.3, 5.6, 2.8 Hz, 2H), 2.31 (dd, J = 8.3, 4.8 Hz, 1H), 2.20 (s, 3H), 2.06 (s, 3H), 1.97 – 1.83 (m, 2H), 1.51 (dq, J = 12.7, 6.8 Hz, 1H), 0.89 – 0.76 (m, 4H). 436

Example 442: N-[5-[5-(1-methylazetidin-3-yl)oxy-2-prop-1-ynyl-4-pyridyl]p yrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. g, 47%) was prepared by the similar method of Example 441. In Step A, 2-chloro-4-iodo-5-((1-methylazetidin-3-yl)oxy)pyridine was used instead of (R)-2- chloro-4-iodo-5-((1-methylpyrrolidin-3-yl)methoxy)pyridine. MS (ESI): mass calcd. for C ₂₃ H ₂₃ N ₅ O ₂ , 401.2; m/z found, 402.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.09 (s, 1H), 8.57 (dd, J = 7.3, 1.0 Hz, 1H), 8.13 (s, 1H), 7.86 (dd, J = 2.0, 0.9 Hz, 1H), 7.54 (s, 1H), 7.07 (dd, J = 7.2, 2.0 Hz, 1H), 6.91 (s, 1H), 4.97 (p, J = 5.4 Hz, 1H), 3.80 – 3.59 (m, 2H), 3.08 – 2.95 (m, 2H), 2.26 (s, 3H), 2.06 (s, 3H), 1.98 – 1.86 (m, 1H), 0.91 – 0.72 (m, 4H). Example 443: N-[5-[5-[[(2S)-morpholin-2-yl]methoxy]-2-prop-1-ynyl-4-pyrid yl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. p g, 52%) was prepared by the similar method of Example 441. In Step A, tert-butyl (S)-2-(((6-chloro-4-iodopyridin-3-yl)oxy)methyl)morpholine-4 -carboxylate was used instead of (R)-2-chloro-4-iodo-5-((1-methylpyrrolidin-3-yl)methoxy)pyri dine. The Boc-protecting group was removed by adding 1.5 mL 1:10 TFA:DCM to the purified product from Step B. MS (ESI): mass calcd. for C ₂₄ H ₂₅ N ₅ O ₃ , 431.2; m/z found, 432.2 [M+H] ⁺ . ¹ H NMR 437

(400 MHz, DMSO-d6) δ 11.09 (s, 1H), 8.56 (dt, J = 7.3, 0.9 Hz, 1H), 8.40 (s, 1H), 7.93 (dd, J = 2.0, 0.9 Hz, 1H), 7.54 (s, 1H), 7.10 (dd, J = 7.3, 2.0 Hz, 1H), 6.89 (s, 1H), 4.17 (d, J = 4.8 Hz, 2H), 3.75 (d, J = 11.0 Hz, 1H), 3.71 – 3.62 (m, 1H), 3.45 (td, J = 10.8, 3.1 Hz, 1H), 2.87 – 2.75 (m, 1H), 2.70 – 2.56 (m, 2H), 2.44 – 2.28 (m, 1H), 2.06 (s, 3H), 1.93 (m, J = 7.7, 3.8 Hz, 1H), 0.89 – 0.74 (m, 4H). Example 444: N-(5-(5-((1r,3r)-3-amino-3-methylcyclobutoxy)-2-methylpyridi n-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. 22 mg, 88%) was prepared by the similar method of Example 1 using trans-3-amino-3-methylcyclobutanol hydrochloride instead of (R)-(1-methylpyrrolidin-3- yl)methanol. MS (ESI): mass calcd. for C ₂₂ H ₂₅ N ₅ O ₂ , 391.2; m/z found, 392.2 [M+H] ⁺ . ¹ H NMR (500 MHz, CD ₃ Cl) δ 10.13 (s, 1H), 8.23 (d, J = 7.2 Hz, 1H), 7.99 (s, 1H), 7.60 (d, J = 1.9 Hz, 1H), 7.08 (s, 1H), 6.99 (s, 1H), 6.87 (dd, J = 7.2, 2.0 Hz, 1H), 4.85 – 4.76 (m, 1H), 2.44 (s, 3H), 2.38 – 2.30 (m, 2H), 2.05 (dd, J = 13.0, 5.2 Hz, 2H), 1.62 – 1.50 (m, 1H), 1.25 (s, 3H), 1.06 (p, J = 4.2 Hz, 2H), 0.79 – 0.72 (m, 2H). Example 445: N-[5-[2-methyl-5-[[(3*S,5*R)-5-(trifluoromethyl)-3-piperidyl ]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 438

S,4*R)-4-((4-(2-(cyclopropanecarboxamido)pyrazolo[1,5-a]pyri din- 5-yl)-6-methylpyridin-3-yl)oxy)-2-(trifluoromethyl)piperidin e-1-carboxylate. The protected version of the title compound was prepared by the similar method of Example 1 using (3*S,5*R)-5-(trifluoromethyl)piperidin-3-ol instead of (R)-(1-methylpyrrolidin-3-yl)methanol (222 mg, 88%). Step B. N-[5-[2-methyl-5-[[(3*S,5*R)-5-(trifluoromethyl)-3-piperidyl ]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. The Boc-protecting group was removed by stirring the product from Step A with 1:10 TFA:DCM (11mL) to give N-(5-(2- methyl-5-(((2*S,4*R)-2-(trifluoromethyl)piperidin-4-yl)oxy)p yridin-4-yl)pyrazolo[1,5-a]pyridin- 2-yl)cyclopropanecarboxamide (70 mg, 0.152 mmol) which was further purified by SFC over DAICEL CHIRALCEL OD-H 250 mm x 30 mm, 5 µm (eluent: 30% to 30% (v/v) 0.1% NH ₃ - H2O MeOH). The pure fractions were collected, and the volatiles were removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/acetone, and then lyophilized to dryness to afford a white solid (8.30 mg, 11%). MS (ESI): mass calcd. for C23H24F3N5O2, 459.2; m/z found, 460.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.11 (s, 1H), 8.57 (d, J = 7.2 Hz, 1H), 8.43 (s, 1H), 7.80 (d, J =1.2 Hz, 1H), 7.36 (s, 1H), 7.03 (dd, J = 2.0, 7.2 Hz, 1H), 6.91 (s, 1H), 4.42 - 4.23 (m, 1H), 3.18 (dd, J = 2.8, 11.6 Hz, 1H), 3.06 - 2.98 (m, 1H), 2.47 (s, 3H), 2.44 - 2.18 (m, 5H), 2.01 - 1.88 (m, 1H), 1.45 - 1.28 (m, 1H), 0.88 - 0.77 (m, 4H). ¹⁹ F NMR (376 MHz, DMSO-d6) δ -70.99 (d, J = 9.0 Hz, 3F). Example 446: N-[5-[2-methyl-5-[[(3*R,5*S)-5-(trifluoromethyl)-3-piperidyl ]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 439

as isolated by SFC resolution as the enantiomer of Example 445 using DAICEL CHIRALCEL OD-H 250 mm x 30 mm, 5 µm (eluent: 30% to 30% (v/v) 0.1% NH3-H2O MEOH). The pure fractions were collected, and the volatiles were removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/acetone, and then lyophilized to dryness to afford a white solid (7.4 mg, 10.3%). MS (ESI): mass calcd. for C23H24F3N5O2, 459.2; m/z found, 460.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.10 (s, 1H), 8.57 (d, J = 7.2 Hz, 1H), 8.42 (s, 1H), 7.81 - 7.79 (m, 1H), 7.36 (s, 1H), 7.04 (dd, J = 1.6, 6.8 Hz, 1H), 6.90 (s, 1H), 4.61 - 4.44 (m, 1H), 3.04 - 2.94 (m, 1H), 2.60 - 2.54 (m, 1H), 2.48 - 2.43 (m, 4H), 2.24 - 2.11 (m, 1H), 2.02 - 1.87 (m, 2H), 1.43 - 1.26 (m, 2H), 0.89 - 0.77 (m, 4H) ¹⁹ F NMR (376 MHz, DMSO-d ₆ ) δ -75.54 (d, J = 7.5 Hz, 3F) Example 447: (*R)-N-[5-[5-[(3-fluoropyrrolidin-3-yl)methoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. as prepared by the similar method of Example 445 using tert-butyl 3-fluoro-3-(hydroxymethyl)pyrrolidine-1-carboxylate instead of (R)-(1-methylpyrrolidin-3- yl)methanol. In Step A, the racemates were separated by SFC over DAICEL CHIRALCEL OJ- H(250mm X 30mm,5um), (eluent: 35% to 35% (v/v) supercritical CO ₂ in EtOH and H ₂ O with 0.1% NH ₃ ) and the first eluting peak was collected (75 mg, 29.9%). Step B was similar to Example 445 as a white solid. (19.9 mg, 33%). MS (ESI): mass calcd. for C22H24FN5O2, 409.2; 440

m/z found, 410.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.51 (s, 1H), 8.28 (d, J = 7.2 Hz, 1H), 8.25 (s, 1H), 7.68 (d, J = 0.4 Hz, 1H), 7.20 (s, 1H), 7.02 (s, 1H), 6.97 (dd, J = 1.6, 7.2 Hz, 1H), 4.37 - 4.18 (m, 2H), 3.28 - 3.16 (m, 2H), 2.98 - 2.84 (m, 2H), 2.57 (s, 3H), 2.18 - 1.86 (m, 2H), 1.65 - 1.53 (m, 1H), 1.19 - 1.11 (m, 2H), 0.96 - 0.88 (m, 2H). ¹⁹ F NMR (376 MHz, CDCl ₃ ) δ - 149.81-150.63 (m, 1F) Example 448: (*S)-N-[5-[5-[(3-fluoropyrrolidin-3-yl)methoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. as prepared by the similar method of Example 445 using tert-butyl 3-fluoro-3-(hydroxymethyl)pyrrolidine-1-carboxylate instead of (R)-(1-methylpyrrolidin-3- yl)methanol.. In Step A, the racemates were separated by SFC over DAICEL CHIRALCEL OJ- H(250mm X 30mm,5um), (eluent: 35% to 35% (v/v) supercritical CO2 in EtOH and H2O with 0.1% NH ₃ ) and the second eluting peak was collected (75 mg, 29.6%). Step B was similar to Example 445 as a white solid (22 mg, 36%). MS (ESI): mass calcd. for C ₂₂ H ₂₄ FN ₅ O ₂ , 409.2; m/z found, 410.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.46 (s, 1H), 8.28 (d, J = 7.2 Hz, 1H), 8.25 (s, 1H), 7.68 (d, J = 0.8 Hz, 1H), 7.20 (s, 1H), 7.01 (s, 1H), 6.97 (dd, J = 1.6, 7.2 Hz, 1H), 4.38 - 4.16 (m, 2H), 3.30 - 3.13 (m, 2H), 3.00 - 2.82 (m, 2H), 2.57 (s, 3H), 2.19 - 1.84 (m, 2H), 1.65 - 1.51 (m, 1H), 1.19 - 1.09 (m, 2H), 0.97 - 0.86 (m, 2H) ¹⁹ F NMR (376 MHz, CDCl3) δ -150.10 - - 150.16 (m, 1F) Example 449: *R-N-[5-[5-[(3-fluoro-1-methyl-pyrrolidin-3-yl)methoxy]-2-me thyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 441

[5-[5-[(3-fluoropyrrolidin-3-yl)methoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide (Example 447, 70.0 mg, 0.171 mmol) and paraformaldehyde (27.7 mg, 0.308 mmol) in MeOH (1.5 mL). The reaction mixture was stirred at 25°C for 30 min. Then, NaBH3CN (23.6 mg, 0.376 mmol) was added to the reaction mixture. The reaction mixture was stirred at 25°C for 12 hours. The organic extracts were filtered to obtain the crude product, which was purified by preparative HPLC using a YMC-Triart Prep C18250 x 50mm x 10um column (eluent: 30% to 60% (v/v) CH3CN and H2O with 0.04% NH ₃ ) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound as a white solid (15.2 mg, 20.7%). MS (ESI): mass calcd. for C23H26FN5O2, 423.2; m/z found, 424.3 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.38 (br. s., 1H), 8.28 (d, J = 7.6 Hz, 1H), 8.24 (s, 1H), 7.68 (d, J = 0.8 Hz, 1H), 7.20 (s, 1H), 7.04 - 6.97 (m, 2H), 4.27 - 4.14 (m, 2H), 2.92 - 2.74 (m, 3H), 2.65 - 2.58 (m, 1H), 2.56 (s, 3H), 2.37 (s, 3H), 2.22 - 2.01 (m, 2H), 1.63 - 1.53 (m, 1H), 1.19 - 1.12 (m, 2H), 0.96 - 0.88 (m, 2H) ¹⁹ F NMR (376 MHz, CDCl3) δ -145.74 (s, 1F) Example 450: (*S)-N-[5-[5-[(1,2-dimethylazetidin-2-yl)methoxy]-2-methyl-4 - pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 2

Step A. The title compound was prepared as described in Example 203 where tert-butyl 2-methyl-2-((tosyloxy)methyl)azetidine-1-carboxylate was used instead of (3- hydroxytetrahydrofuran-3-yl)methyl 4-methylbenzenesulfonate. The mixture was filtered, and the filtrate was purified by preparative HPLC using a Boston Prime C18150 X 30mm X 5um column (eluent: 45% to 75% (v/v) CH3CN and H2O with 0.04% NH3) to afford pure product. The pure was further purified by SFC over DAICEL CHIRALPAK IG(250mm X 50mm,10um), (eluent: 50% to 50% (v/v) supercritical CO ₂ in EtOH and H ₂ O with 0.1% NH ₃ ). The pure fractions were collected and the volatiles were removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford white solid *S (42 mg, 5.27%). Step B. (*S)-(R)-N-(5-(2-methyl-5-((2-methylazetidin-2-yl)methoxy)py ridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. The title compound was prepared by the similar method of Example 449 Step B (18.6 mg, 119%). MS (ESI): mass calcd. for C ₂₃ H ₂₇ N ₅ O ₂ , 405.2; m/z found, 406.3 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.28 - 8.23 (m, 3H), 7.70 (d, J = 0.8 Hz, 1H), 7.15 (s, 1H), 6.98 (s, 1H), 6.95 (dd, J = 2.0, 7.2 Hz, 1H), 3.99 - 3.91 (m, 2H), 3.37 - 3.30 (m, 1H), 3.04 - 2.96 (m, 1H), 2.55 (s, 3H), 2.19 - 2.10 (m, 4H), 1.80 - 1.72 (m, 1H), 1.60 - 1.53 (m, 1H), 1.24 (s, 3H), 1.17 - 1.12 (m, 2H), 0.95 - 0.88 (m, 2H). Example 451: N-[5-[5-[[(2R)-1-ethylazetidin-2-yl]methoxy]-2-methyl-4-pyri dyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 2-(((4-(2-(cyclopropanecarboxamido)pyrazolo[1,5-a]pyridin-5- yl)- 6-methylpyridin-3-yl)oxy)methyl)azetidine-1-carboxylate. To a mixture consisting of Intermediate 7 (1.5 g, 4.9 mmol), (R)-tert-butyl 2-((tosyloxy)methyl)azetidine-1-carboxylate 443

(1.66 g, 4.9 mmol) and DMF (25 mL) was added Cs2CO3 (4.76 g, 14.6 mmol) at 30°C. The reaction mixture was stirred at 75°C for 16 hrs. The reaction was cooled to room temperature, diluted with water and extracted with EtOAc. The combined organics were dried with MgSO ₄ , filtered and concentrated in vacuo. The reactant mixture was purified by preparative HPLC using a YMC-Triart Prep C18150 x 40mm x 7um (eluent: 48% to 58% (v/v) CH3CN and H2O with 0.04% NH ₃ ) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (850 mg, 36.59%) as a white solid. Step B: (R)-N-(5-(5-(azetidin-2-ylmethoxy)-2-methylpyridin-4-yl)pyra zolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide. TFA (5 mL) was added to a solution consisting of (R)- tert-butyl 2-(((4-(2-(cyclopropanecarboxamido)pyrazolo[1,5-a]pyridin-5- yl)-6-methylpyridin-3- yl)oxy)methyl)azetidine-1-carboxylate (850 mg, 1.78 mmol) and 15 mL DCM. The resulting mixture was stirred at room temperatuer for 1 h and then the solvent was evaporated under reduced pressure to get the crude. The crude was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (950 mg, crude) as a yellow oil. The crude oil was used as is in the following reaction. Step C: N-[5-[5-[[(2R)-1-ethylazetidin-2-yl]methoxy]-2-methyl-4-pyri dyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide The title compound was prepared as described in Example 116 step C where acetaldehyde was used instead of formaldehyde and (R)-N-(5-(5- (azetidin-2-ylmethoxy)-2-methylpyridin-4-yl)pyrazolo[1,5-a]p yridin-2- yl)cyclopropanecarboxamide was used instead of 5-(5-(((1R,5S,7s)-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl)oxy)-2-methylpyridin-4-yl)-N-(1- (difluoromethyl)-1H-pyrazol-4- yl)pyrazolo[1,5-a]pyridin-2-amine (26.1 mg, 24%). MS (ESI): mass calcd. for C ₂₃ H ₂₇ N ₅ O ₂ , 405.2; m/z found, 406.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.33 (s, 1H), 8.28 - 8.22 (m, 2H), 7.71 - 7.66 (m, 1H), 7.16 (s, 1H), 6.99 (s, 1H), 6.95 (dd, J = 2.0, 7.2 Hz, 1H), 4.17 - 4.03 (m, 2H), 3.47 - 3.34 (m, 2H), 2.82 - 2.73 (m, 1H), 2.67 - 2.58 (m, 1H), 2.55 (s, 3H), 2.36 - 2.26 (m, 1H), 2.11 - 1.96 (m, 2H), 1.62 - 1.53 (m, 1H), 1.18 - 1.11 (m, 2H), 0.97 - 0.86 (m, 5H ) 444

Example 452: N-[5-[2-methyl-5-[[(2R)-1-(2,2,2-trifluoroethyl)azetidin-2-y l]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. g (R)-N-(5-(5-(azetidin-2-ylmethoxy)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (Example 451 Steps A-B, 100 mg, 0.203 mmol), 2,2,2-trifluoroethyl trifluoromethanesulfonate (56.7 mg, 0.244 mmol), DIEA (78.9 mg, 0.610 mmol) and DMF (4 mL) was stirred at r.t. for 4 h. The mixture was purified by preparative HPLC with Phenomenex Gemini-NX C1875 x 30mm x 3um, column (eluent: 35% to 65% (v/v) CH3CN and H2O with 0.04% NH3-H2O +10mM NH4HCO3) to afford product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound as a white solid (8.9 mg, 9.5%). MS (ESI): mass calcd. for C ₂₃ H ₂₄ F ₃ N ₅ O ₂ , 459.2; m/z found, 460.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.33 - 8.20 (m, 3H), 7.66 (s, 1H), 7.17 (s, 1H), 7.00 (s, 1H), 6.94 (dd, J = 2.0, 7.6 Hz, 1H), 4.16 - 4.05 (m, 2H), 3.72 - 3.53 (m, 2H), 3.14 - 3.02 (m, 2H), 2.95 - 2.83 (m, 1H), 2.57 (s, 3H), 2.16 - 2.06 (m, 2H), 1.63 - 1.52 (m, 1H), 1.20 - 1.10 (m, 2H), 0.97 - 0.88 (m, 2H). ¹⁹ F NMR (376 MHz, CDCl3) δ -71.02, -71.14 (m, 3F) Example 453: (*S, *S)-N-[5-[5-(2-ethylazetidin-3-yl)oxy-2-methyl-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 45

Step A. N-(5-(5-(((2R,3R)-1-benzhydryl-2-ethylazetidin-3-yl)oxy)-2-m ethylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. The title compound was prepared by the similar method of Example 136 using (cis)-1-benzhydryl-2-ethylazetidin-3-ol instead of endo-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride (1000 mg, 77%). Step B. N-(5-(5-(((2*S,3*S)-2-ethylazetidin-3-yl)oxy)-2-methylpyridi n-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. A mixture of dry Pd/C (0.946 g, 10 wt.%, 8.89 mmol ) and MeOH (15 mL) was added a mixture of HCO ₂ NH ₄ (1.36 mg, 21.5 mmol) and N-(5-(5-(((cis)-1-benzhydryl-2-methylazetidin-3-yl)oxy)-2-me thylpyridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide (1.0 g, 1.4 mmol) in MeOH (15 mL) and THF (30 mL), then the reaction was stirred at 50 °C for 16 h. The suspension was filtered through a pad of Celite® and the pad washed with MeOH (400 mL). The filtrate was concentrated to dryness under reduced pressure to afford the crude product. The post chromatographic product was further purified by FCC (eluent: methylene chloride : MeOH = 1:0 to 5:1) to afford a yellow solid (130 mg, 22%). The racemate was further purified by SFC over DAICEL CHIRALPAK AD 250 mm x 30 mm x 10 µm (eluent: 55% to 55% (v/v) supercritical CO2 in EtOH and H2O with 0.1% NH ₃ ). The pure fractions were collected, and the volatiles were removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford a white powder. The white powder was not pure. It was further purified by preparative HPLC with an Agela ASB 150 mm x 25 mm x 5µm column (eluent: 5% to 35 (v/v) CH ₃ CN and H ₂ O aqueous HCl (0.006)) to afford the title compound as yellow solids (3.1 mg, 10%). MS (ESI): mass calcd. for C22H25N5O2, 391.2; m/z found, 392.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.19 (s, 1H), 9.90 - 9.57 (m, 1H), 9.42 (s, 1H), 8.67 (d, J = 7.6 Hz, 1H), 8.35 (s, 1H), 8.08 (s, 1H), 7.84 (s, 1H), 7.20 (dd, J = 1.6 Hz, J = 7.6 Hz, 1H), 7.00 (s, 1H), 5.35 - 5.24 (m, 1H), 4.75 - 4.60 (m, 1H), 4.54 - 4.39 (m, 1H), 3.94 - 3.81 (m, 1H), 2.64 (s, 3H), 2.02 - 1.73 (m, 3H), 0.88 - 0.78 (m, 7H). Example 454: (*R)-N-[5-[2-methyl-5-[(2R)-3,3,3-trifluoro-2-hydroxy-propox y]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 446

as prepared by the similar method of Example 136 using (RS)- 3,3,3-trifluoropropane-1,2-diol instead of endo-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride (40 mg, 83%). (RS)-N-(5-(2-methyl-5-(3,3,3-trifluoro-2-hydroxypropoxy)pyri din- 4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (40 mg, 0.079mmol) was further purified by SFC over DAICEL CHIRALCEL OD-H 250 mm x 30 mm, 10 µm (eluent: 35% to 35% (v/v) supercritical CO2 in EtOH and H2O with 0.1% NH3). The pure fractions were collected, and the volatiles were removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to afford a white powder (4.8 mg, 14%). MS (ESI): mass calcd. for C20H19F3N4O3, 420.1; m/z found, 421.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.10 (s, 1H), 8.54 (d, J = 7.2 Hz, 1H), 8.39 (s, 1H), 7.89 (d, J = 0.8 Hz, 1H), 7.39 (s, 1H), 7.09 (dd, J = 2.0, 7.2 Hz, 1H), 6.89 (s, 1H), 6.80 - 6.60 (m, 1H), 4.47 - 4.38 (m, 1H), 4.38 - 4.31 (m, 1H), 4.28 - 4.18 (m, 1H), 2.47 (s, 3H), 1.98 - 1.89 (m, 1H), 0.88 - 0.78 (m, 4H). ¹⁹ F NMR (376 MHz, DMSO-d6) δ -75.89 (d, J = 7.5 Hz, 3F) Example 455: *R, *R-N-[5-[5-(1,2-dimethylazetidin-3-yl)oxy-2-methyl-4-pyridyl ]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. S,3RS)-1-benzhydryl-2-methylazetidin-3-yl)oxy)-2-methylpyrid in- 4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. The title compound was prepared by 447

the similar method of Example 136 using Racemic-(cis)-1-benzhydryl-2-methylazetidin-3-ol instead of endo-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride (460 mg, 30%). Step B. *R, *R-N-(5-(2-methyl-5-(((2R,3R)-2-methylazetidin-3-yl)oxy)pyri din-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. A mixture of 10% Pd/C (500 mg, dry) and MeOH (4 mL) was added a mixture of HCO2NH4 (640 mg, 10.2 mmol) and N-(5-(5- (((2R,3R)-1-benzhydryl-2-methylazetidin-3-yl)oxy)-2-methylpy ridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide (460 mg, 0.846 mmol) in THF (4 mL), then the reaction was stirred at 50 °C for 16 h. The suspension was filtered through a pad of Celite® and the pad washed with ethyl acetate (20 mL). The filtrate was concentrated to dryness under reduced pressure to afford the crude product, which was purified by FCC (DCM: MeOH = 1:0 to 0:1) to afford the title compound as an off-white solid (120 mg, 38%). This racemate was separated (120 mg) was further purified by SFC over AD 250 mm x 50 mm, 10 µm (eluent: 50% to 50% (v/v) supercritical CO ₂ in EtOH and H ₂ O with 0.1% NH ₃ ). The pure fractions were collected, and the volatiles were removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/acetone, and then lyophilized to dryness to afford *R, *R-isomer (50 mg) and *S, *S-isomer (50 mg). The *R, *R-isomer was pure. *S, *Sisomer (50 mg) was purified by preparative HPLC using a Gemini C18, 250 x 50 mm x 10 µm column (eluent: 0% to 60% (v/v) CH3CN and H2O with 10 mM NH4HCO3) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/acetone, and then lyophilized to dryness to afford the title compound (13 mg, 11%) as light a yellow solid. MS (ESI): mass calcd. for C21H23N5O2, 377.4; m/z found, 378.2 [M+H]+. ¹ H NMR (400 MHz, CD3OD) δ 8.44 (d, J = 7.2 Hz, 1H), 7.95 (s, 1H), 7.80 (d, J = 1.2 Hz, 1H), 7.41 (s, 1H), 7.08 (dd, J = 1.6, 7.2 Hz, 1H), 6.92 (s, 1H), 5.25 - 5.12 (m, 1H), 4.64 - 4.50 (m, 1H), 4.24 - 4.14 (m, 1H), 3.82 - 3.67 (m, 1H), 2.53 (s, 3H), 1.96 - 1.81 (m, 1H), 1.36 (d, J = 6.8 Hz, 3H), 1.03 - 0.97 (m, 2H), 0.94 - 0.86 (m, 2H) Step C. N-(5-(5-(((2R,3R)-1,2-dimethylazetidin-3-yl)oxy)-2-methylpyr idin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. H(CHO)n (2.17 mg, 0.0240 mmol) was added to a solution consisting of N-(5-(2-methyl-5-(((2R,3R)-2-methylazetidin-3- yl)oxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropane carboxamide (7.0 mg, 0.019 mmol) and MeOH (1 mL). The reaction mixture was stirred at room-temperature for 30 min. 448

Then NaBH3CN (2.3 mg, 0.037 mmol) was added to the reaction mixture. The post chromatographic product was further purified by preparative HPLC using a Phenomenex Gemini 150 x 25 mm x 10 µm (eluent: 25% to 55% (v/v) CH ₃ CN and H ₂ O with 0.05% NH ₃ ) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ ethyl alcohol, and then lyophilized to dryness to afford the title compound as a white solid (3.5mg, 46%). MS (ESI): mass calcd. for C ₂₂ H ₂₅ N ₅ O ₂ , 391.2; m/z found, 392.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.11 (s, 1H), 8.60 (d, J = 7.2 Hz, 1H), 8.01 (s, 1H), 7.89 (s, 1H), 7.38 (s, 1H), 7.11 (dd, J = 1.6, 7.6 Hz, 1H), 6.89 (s, 1H), 5.02 - 4.93 (m, 1H), 3.31 - 3.25 (m, 2H), 3.20 - 3.10 (m, 1H), 2.46 (s, 3H), 2.21 (s, 3H), 1.98 - 1.89 (m, 1H), 1.05 (d, J = 6.4 Hz, 3H), 0.87 - 0.78 (m, 4H). Example 456: (*S, *S)-N-[5-[5-(1,2-dimethylazetidin-3-yl)oxy-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. as prepared by the similar method of Example 455. The isomer (*S, *S-isomer) was used for step C (36 mg, 43%). MS (ESI): mass calcd. for C22H25N5O2, 391.2; m/z found, 392.3 [M+H] ⁺ . ¹ H NMR (400 MHz, CD3OD) δ 8.42 (d, J = 7.2 Hz, 1H), 7.89 (s, 1H), 7.86 (s, 1H), 7.39 (s, 1H), 7.13 (dd, J = 1.6, 7.2 Hz, 1H), 6.92 (s, 1H), 5.00 - 4.94 (m, 1H), 3.63 - 3.55 (m, 1H), 3.51 - 3.46 (m, 1H), 3.37 - 3.32 (m, 1H), 2.52 (s, 3H), 2.35 (s, 3H), 1.91 - 1.83 (m, 1H), 1.18 (d, J = 6.4 Hz, 3H), 1.03 - 0.97 (m, 2H), 0.93 - 0.86 (m, 2H). Example 457: N-[5-[5-[[1-(2-fluoroethyl)azetidin-3-yl]methoxy]-2-methyl-4 - pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 449

(4-(2-(cyclopropanecarboxamido)pyrazolo[1,5-a]pyridin-5-yl)- 6- methylpyridin-3-yl)oxy)methyl)azetidine-1-carboxylate. The title compound was prepared by the similar method of Example 446. The tert-butyl 3-(hydroxymethyl)azetidine-1-carboxylate was used instead of (3S,5R)-5-(trifluoromethyl)piperidin-3-ol (200 mg, 50%). MS (ESI): mass calcd. for C26H31N5O4, 477.6; m/z found, 478.3 [M+H] ⁺ . Step B. N-(5-(5-((1-(2-fluoroethyl)azetidin-3-yl)methoxy)-2-methylpy ridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. The title compound was prepared by the similar method of Example 452. The 1-bromo-2-fluoroethane was used instead of 2,2,2- trifluoroethyl trifluoromethanesulfonate (20 mg, 21.8%). MS (ESI): mass calcd. for C ₂₃ H ₂₆ FN ₅ O ₂ , 423.2; m/z found, 424.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CD ₃ OD) δ 8.41 (d, J = 7.2 Hz, 1H), 8.22 (s, 1H), 7.72 (s, 1H), 7.33 (s, 1H), 7.06 - 6.96 (m, 1H), 6.90 (s, 1H), 4.43 - 4.24 (m, 2H), 4.17 (d, J = 5.2 Hz, 2H), 3.51 - 3.41 (m, 2H), 3.18 - 3.09 (m, 2H), 2.99 - 2.88 (m, 1H), 2.68 - 2.54 (m, 2H), 2.51 (s, 3H), 1.94 - 1.80 (m, 1H), 1.04 - 0.95 (m, 2H), 0.93 - 0.84 (m, 2H). 1 ⁹ F NMR (376 MHz, DMSO-d6) δ -221.04 - 221.56 (m, 1F). Example 458: Trans-*R, *R-N-[5-[5-[(4-methoxypyrrolidin-3-yl)methoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. was prepared by the similar method of Example 8 using rel-trans- tert-butyl-3-(hydroxymethyl)-4-methoxypyrrolidine-1-carboxyl ate instead of (3S,5R)-5- 450

(trifluoromethyl)piperidin-3-ol and (18.7 mg, 4.8%). MS (ESI): mass calcd. for C23H27N5O3, 421.2; m/z found, 422.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CD3OD) δ 8.45 – 8.41 (m, 1H), 8.25 (s, 1H), 7.78 – 7.68 (m, 1H), 7.36 (s, 1H), 7.02 (dd, J = 7.2, 2.0 Hz, 1H), 6.90 (s, 1H), 4.16 – 4.05 (m, 2H), 3.81 – 3.75 (m, 1H), 3.19 (s, 3H), 3.17 – 3.08 (m, 1H), 2.95 – 2.80 (m, 2H), 2.64 (dd, J = 11.7, 5.9 Hz, 1H), 2.55 – 2.46 (m, 4H), 1.93 – 1.82 (m, 1H), 1.05 – 0.97 (m, 2H), 0.93 – 0.85 (m, 2H). Example 459: Cis- rac--N-[5-[5-[(4-methoxypyrrolidin-3-yl)methoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. was prepared by the similar method of Example 8 using rel-cis-tert- butyl-3-(hydroxymethyl)-4-methoxypyrrolidine-1-carboxylate instead of (2S,4R)-tert-butyl 4- hydroxy-2-(trifluoromethyl)piperidine-1-carboxylate (5.8 mg, 1.47%). MS (ESI): mass calcd. for C ₂₃ H ₂₇ N ₅ O ₃ , 421.2; m/z found, 422.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.01 (s, 1H), 8.53 – 8.46 (m, 1H), 8.29 – 8.24 (m, 1H), 7.77 – 7.71 (m, 1H), 7.28 (s, 1H), 6.97 (dd, J = 7.3, 2.0 Hz, 1H), 6.83 – 6.78 (m, 1H), 4.21 – 4.14 (m, 1H), 4.04 – 3.98 (m, 1H), 3.78 – 3.67 (m, 1H), 3.12 – 3.08 (m, 3H), 2.84 – 2.70 (m, 3H), 2.57 – 2.50 (m, 1H), 2.39 (s, 3H), 2.36 – 2.28 (m, 1H), 1.91 – 1.82 (m, 1H), 0.80 – 0.69 (m, 4H). Example 460: N-[5-[2-methyl-5-[[(1S,5R)-9-methyl-3-oxa-9-azabicyclo[3.3.1 ]nonan-7-yl]oxy]- 4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamid e. 451

The title compound was prepared by the similar method of Example 449 using formaldehyde instead of acetaldehyde and endo-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride instead of (3S,5R)-5-(trifluoromethyl)piperidin-3-ol (42.9 mg, 40%). MS (ESI): mass calcd. for C25H29N5O3, 447.2; m/z found, 448.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.07 (s, 1H), 8.54 – 8.48 (m, 1H), 8.27 – 8.23 (m, 1H), 8.19 (s, 1H), 7.39 (s, 1H), 7.25 (dd, J = 7.3, 2.0 Hz, 1H), 6.82 (s, 1H), 4.76 – 4.66 (m, 1H), 3.79 (dd, J = 10.7, 2.4 Hz, 2H), 3.50 (d, J = 10.7 Hz, 2H), 2.65 – 2.59 (m, 2H), 2.45 (s, 3H), 2.43 – 2.35 (m, 5H), 1.98 – 1.85 (m, 1H), 1.63 (d, J = 15.5 Hz, 2H), 0.88 – 0.76 (m, 4H). Example 461: Trans-*R, *R-N-[5-[5-[(4-methoxy-1-methyl-pyrrolidin-3-yl)methoxy]-2-m ethyl- 4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamid e. (((3R,4R)-4-methoxypyrrolidin-3-yl)methoxy)-2-methylpyridin- 4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. The title compound was prepared by the similar method of Example 458. The isomers were separated by SFC OD-H (2 x 25 cm) 25% methanol (0.1% DEA)/ CO ₂ , 100 bar inj vol.: 1mL, 4 mg/mL methanol:DCM yielded 41 mg of the second eluting peak (ee>99%). MS (ESI): mass calcd. for C ₂₃ H ₂₇ N ₅ O ₃ , 421.2; m/z found, 422.2 [M+H] ⁺ . 452

Step B. rac-N-(5-(5-(((3R,4R)-4-methoxy-1-methylpyrrolidin-3-yl)meth oxy)-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanec arboxamide. The title compound was prepared by the similar method of Example 10. MS (ESI): mass calcd. for C ₂₄ H ₂₉ N ₅ O ₃ , 435.2; m/z found, 436.2 [M+H] ⁺ . ¹ H NMR (500 MHz, CD ₃ OD) δ 8.46 – 8.38 (m, 1H), 8.25 (s, 1H), 7.80 – 7.71 (m, 1H), 7.37 (s, 1H), 7.01 (dd, J = 7.2, 2.0 Hz, 1H), 6.90 (s, 1H), 4.19 – 4.09 (m, 2H), 3.74 – 3.69 (m, 1H), 3.16 (s, 3H), 2.97 – 2.90 (m, 1H), 2.79 – 2.72 (m, 1H), 2.58 – 2.54 (m, 1H), 2.53 (s, 3H), 2.47 – 2.42 (m, 1H), 2.25 (s, 3H), 2.23 – 2.18 (m, 1H), 1.91 – 1.84 (m, 1H), 1.04 – 0.96 (m, 2H), 0.94 – 0.87 (m, 2H). Example 462: N-[5-[2-methyl-5-[[(1S,5R)-9-(trideuteriomethyl)-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]py ridin-2- yl]cyclopropanecarboxamide. as prepared by the similar method of Example 460 using deuterio- formaldehyde instead of paraformaldehyde and sodium cyanoborodeuteride instead of sodium cyanoborohydride (53.8 mg, 51%). MS (ESI): mass calcd. for C25H29N5O3, 450.2; m/z found, 451.1 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 11.06 (s, 1H), 8.55 – 8.46 (m, 1H), 8.27 – 8.23 (m, 1H), 8.19 (s, 1H), 7.39 (s, 1H), 7.25 (dd, J = 7.3, 2.0 Hz, 1H), 6.82 (s, 1H), 4.74 – 4.66 (m, 1H), 3.86 – 3.75 (m, 2H), 3.54 – 3.46 (m, 2H), 2.62 (d, J = 6.9 Hz, 2H), 2.45 (s, 3H), 2.43 – 2.34 (m, 2H), 1.99 – 1.89 (m, 1H), 1.63 (d, J = 15.0 Hz, 2H), 0.87 – 0.77 (m, 4H). Example 463: (1R,2R)-2-methyl-N-[5-[2-methyl-5-[[(1S,4S,7R)-2-oxa-5- azabicyclo[2.2.1]heptan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]p yridin-2- yl]cyclopropanecarboxamide. 453

s prepared by the similar method of Example 445 using tert-butyl (1S,4S,7R)-7-hydroxy-2-oxa-5-azabicyclo[2.2.1]heptane-5-carb oxylate instead of (2S,4R)-tert- butyl 4-hydroxy-2-(trifluoromethyl)piperidine-1-carboxylate and (1R,2R)-N-(5-(5-fluoro-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)-2-methylcycl opropane-1-carboxamide instead of Intermediate 6 (116 mg, 88%). MS (ESI): mass calcd. for C23H25N5O3, 419.2; m/z found, 420.2 [M+H] ⁺ . ¹ H NMR (500 MHz, CD ₃ OD) δ 8.42 – 8.37 (m, 2H), 7.77 – 7.74 (m, 1H), 7.40 (s, 1H), 7.04 (dd, J = 7.2, 2.0 Hz, 1H), 6.89 (s, 1H), 4.87 (d, J = 2.3 Hz, 1H), 4.34 (s, 1H), 4.02 (dd, J = 7.8, 2.1 Hz, 1H), 3.87 (d, J = 7.8 Hz, 1H), 3.55 (t, J = 2.2 Hz, 1H), 3.14 (dd, J = 11.2, 1.7 Hz, 1H), 2.97 (dd, J = 11.2, 0.8 Hz, 1H), 2.54 (s, 3H), 1.62 – 1.56 (m, 1H), 1.44 – 1.36 (m, 1H), 1.23 – 1.19 (m, 1H), 1.17 (d, J = 6.0 Hz, 3H), 0.75 – 0.71 (m, 1H). Example 464: N-(5-(5-((1s,3s)-3-aminocyclobutoxy)-2-methylpyridin-4-yl)py razolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide. The title compound was prepared by the similar method of Example 136 using cis-3- aminocyclobutanol hydrochloride instead of endo-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride (216 mg, 88.8%). MS (ESI): mass calcd. for C21H23N5O2, 377.2; m/z found, 378.2 454

[M+H] ⁺ . ¹ H NMR (500 MHz, CDCl3) δ 10.14 (d, J = 11.7 Hz, 1H), 8.20 (d, J = 7.2 Hz, 1H), 8.02 (s, 1H), 7.57 (d, J = 1.9 Hz, 1H), 7.07 (s, 1H), 6.98 (s, 1H), 6.86 (dd, J = 7.1, 1.9 Hz, 1H), 4.29 (p, J = 6.9 Hz, 1H), 3.11 (s, 1H), 2.87 (s, 2H), 2.79 (qt, J = 9.3, 6.4, 5.7 Hz, 2H), 2.44 (s, 3H), 1.77 (dt, J = 12.0, 7.9 Hz, 2H), 1.56 (tt, J = 8.6, 4.6 Hz, 1H), 1.05 (p, J = 4.3 Hz, 2H), 0.74 (dq, J = 7.3, 4.0 Hz, 2H). Example 465: N-[5-[5-[(2R)-2-amino-2-phenyl-ethoxy]-2-methyl-4-pyridyl]py razolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. as prepared by the similar method of Example 253. The mixture of regioisomer and stereoisomers were separated by chiral IA (2x25 cm) 50% methanol(DEA)/CO ₂ , 100 bar, 50 mL/min, inj. Vol.0.5mL at 0.3mg.mL. The first eluting peak was collected. (72 mg, 25%). MS (ESI): mass calcd. for C25H25N5O2, 427.2; m/z found, 428.2 [M+H] ⁺ . ¹ H NMR (600 MHz, CDCl ₃ ) δ 9.07 – 9.02 (m, 1H), 8.15 (d, J = 5.8 Hz, 2H), 7.47 (d, J = 1.9 Hz, 1H), 7.31 – 7.23 (m, 4H), 7.25 – 7.19 (m, 1H), 7.06 (s, 1H), 6.95 (s, 1H), 6.73 (dd, J = 7.2, 1.9 Hz, 1H), 5.21 (s, 1H), 4.27 (dd, J = 7.5, 4.6 Hz, 1H), 4.13 (dd, J = 8.9, 4.6 Hz, 1H), 4.06 – 4.00 (m, 1H), 3.64 (q, J = 7.0 Hz, 1H), 2.46 (s, 3H), 1.52 (tt, J = 8.6, 4.5 Hz, 1H), 1.11 – 1.02 (m, 2H), 0.80 (dq, J = 7.4, 4.1 Hz, 2H). Example 466: N-[5-[5-[(1S)-2-amino-1-phenyl-ethoxy]-2-methyl-4-pyridyl]py razolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 455

as prepared by the similar method of Example 465 using mixture of tert-butyl (S)-(2-hydroxy-2-phenylethyl)carbamate. MS (ESI): mass calcd. for C25H25N5O2, 427.2; m/z found, 428.2 [M+H] ⁺ . ¹ H NMR (600 MHz, CDCl ₃ ) δ 8.72 (s, 1H), 8.23 (d, J = 7.1 Hz, 1H), 8.01 (s, 1H), 7.56 (d, J = 1.9 Hz, 1H), 7.31 – 7.15 (m, 4H), 7.05 (s, 1H), 6.97 (s, 1H), 6.93 (dt, J = 7.3, 4.4 Hz, 1H), 5.11 – 5.03 (m, 1H), 4.14 (tt, J = 10.6, 5.6 Hz, 1H), 3.40 (s, 1H), 3.28 (d, J = 2.5 Hz, 2H), 3.02 (dd, J = 13.6, 7.1 Hz, 1H), 2.40 (s, 3H), 1.53 (s, 1H), 1.08 (p, J = 4.2 Hz, 2H), 0.83 (ddt, J = 13.4, 9.4, 7.2 Hz, 2H). Example 467: N-[5-[5-[(2S)-2-amino-2-phenyl-ethoxy]-2-methyl-4-pyridyl]py razolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. as prepared by the similar method of Example 465. This material was the second eluting peak from Example 465. MS (ESI): mass calcd. for C ₂₅ H ₂₅ N ₅ O ₂ , 427.2; m/z found, 428.2 [M+H] ⁺ . ¹ H NMR (600 MHz, CDCl ₃ ) δ 8.85 (s, 1H), 8.24 (d, J = 5.2 Hz, 2H), 7.57 (dd, J = 2.0, 0.9 Hz, 1H), 7.42 - 7.33 (m, 4H), 7.35 - 7.29 (m, 1H), 7.16 (s, 1H), 7.04 (s, 1H), 6.83 (dd, J = 7.2, 1.9 Hz, 1H), 4.40 - 4.34 (m, 1H), 4.23 (dd, J = 8.9, 4.6 Hz, 1H), 4.12 (dd, J = 8.9, 7.6 Hz, 1H), 2.78 (s, 0H), 2.56 (s, 3H), 1.61 (p, J = 3.9 Hz, 1H), 1.24 - 1.15 (m, 2H), 0.91 (dq, J = 7.2, 4.1 Hz, 2H). 456

Example 468: N-[5-[2-methyl-5-[[(2R)-1-methylazetidin-2-yl]methoxy]-4-pyr idyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. as prepared by the similar method of Example 136 using (R)-(1- methylazetidin-2-yl)methanol instead of endo-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride (333 mg, 94%). MS (ESI): mass calcd. for C22H25N5O2, 391.2; m/z found, 392.2 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl ₃ ) δ 9.33 (d, J = 6.3 Hz, 1H), 8.31 – 8.24 (m, 2H), 7.72 (d, J = 1.9 Hz, 1H), 7.16 (s, 1H), 7.02 (s, 1H), 6.97 (dd, J = 7.3, 2.0 Hz, 1H), 4.13 – 4.04 (m, 2H), 3.51 – 3.39 (m, 1H), 3.34 (td, J = 8.4, 4.1 Hz, 1H), 2.82 (td, J = 8.7, 6.8 Hz, 1H), 2.55 (s, 3H), 2.27 (s, 3H), 2.08 – 1.97 (m, 2H), 1.59 (td, J = 8.0, 4.1 Hz, 1H), 1.28 – 1.11 (m, 2H), 0.95 – 0.85 (m, 2H). Example 469: rac--N-[5-[5-[(3,3-difluoroazetidin-2-yl)methoxy]-2-methyl-4 - pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. as prepared using the method described in Intermediate 10, Step A, and using Intermediate 7 instead of 6-chloro-4-iodopyridn-3-ol and using tert-butyl 3,3-difluoro- 2-(hydroxymethyl)azetidine-1-carboxylate instead of tert-butyl (1R,5S,7s)-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate. The Boc-protecting was removed with 1:4 TFA:DCM. The crude was purified via prep. HPLC using 10-60% ACN-H2O with 20 mM of aq. NH4OH as 457

modifier. The pure fraction was collected, froze, and lyophilized down to afford a white powder (190 mg, 70%). MS (ESI): mass calcd. for C21H21F2N5O2, 413.7; m/z found, 414.2 [M+H] ⁺ .1H NMR (400 MHz, CD ₃ OD) δ 8.34 – 8.28 (m, 1H), 8.18 (s, 1H), 7.70 (dd, J = 2.0, 0.9 Hz, 1H), 7.30 (s, 1H), 6.96 (dd, J = 7.3, 2.0 Hz, 1H), 6.80 (s, 1H), 4.40 – 4.23 (m, 2H), 4.17 (dd, J = 9.8, 5.6 Hz, 1H), 3.82 (td, J = 13.9, 11.1 Hz, 1H), 3.62 (q, J = 12.1 Hz, 1H), 2.45 (s, 3H), 1.78 (s, 1H), 0.96 – 0.87 (m, 2H), 0.81 (dt, J = 8.0, 3.2 Hz, 2H). Example 470: N-[5-[2-methyl-5-[(3-phenylazetidin-3-yl)methoxy]-4-pyridyl] pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. und was prepared by the similar method of Example 136 using (3- phenylazetidin-3-yl)methanol hydrochloride instead of endo-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane hydrochloride (161 mg, 71%). MS (ESI): mass calcd. for C27H27N5O2, 453.2; m/z found, 454.2 [M+H] ⁺ .1H NMR (400 MHz, CD ₃ OD) δ 8.35 (d, J = 7.2 Hz, 1H), 8.23 (s, 1H), 7.53 (d, J = 1.9 Hz, 1H), 7.30 (s, 1H), 7.27 – 7.12 (m, 4H), 7.11 – 7.03 (m, 2H), 6.91 (s, 1H), 6.79 (dd, J = 7.2, 1.9 Hz, 1H), 4.52 (s, 2H), 4.05 – 3.62 (m, 4H), 2.50 (s, 3H), 1.96 – 1.82 (m, 1H), 1.08 – 0.98 (m, 2H), 0.98 – 0.86 (m, 2H). Example 471: N-[5-[5-[[(2S)-3,3-dimethylazetidin-2-yl]methoxy]-2-methyl-4 - pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 458

as prepared by the similar method of Example 8 using tert-butyl (S)-2-(hydroxymethyl)-3,3-dimethylazetidine-1-carboxylate instead of (2S,4R)-tert-butyl 4- hydroxy-2-(trifluoromethyl)piperidine-1-carboxylate (155 mg, 76%). MS (ESI): mass calcd. for C23H27N5O2, 405.2; m/z found, 406.1 [M+H] ⁺ .1H NMR (400 MHz, DMSO-d6) δ 11.07 (s, 1H), 8.55 (dt, J = 7.2, 1.0 Hz, 1H), 8.36 (s, 1H), 7.81 (dd, J = 2.0, 0.9 Hz, 1H), 7.35 (s, 1H), 7.02 (dd, J = 7.2, 2.0 Hz, 1H), 6.89 – 6.83 (m, 1H), 4.12 (ddd, J = 30.8, 9.7, 6.6 Hz, 2H), 3.73 (t, J = 6.6 Hz, 1H), 3.24 (d, J = 7.0 Hz, 1H), 2.93 (d, J = 7.0 Hz, 1H), 2.46 (s, 3H), 1.98 – 1.86 (m, 1H), 1.10 (s, 3H), 1.08 (s, 3H), 0.89 – 0.74 (m, 4H). Example 472: Racemic-N-[5-[2-methyl-5-(7-oxa-2-azaspiro[3.5]nonan-3-ylmet hoxy)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. as prepared by the similar method of Example 8 using tert-butyl (RS)-2-(hydroxymethyl)-3,3-dimethylazetidine-1-carboxylate instead of (2S,4R)-tert-butyl 4- hydroxy-2-(trifluoromethyl)piperidine-1-carboxylate (155 mg, 76%). MS (ESI): mass calcd. for C25H29N5O3, 447.2; m/z found, 448.3 [M+H] ⁺ .1H NMR (400 MHz, DMSO-d6) δ 11.06 (s, 1H), 8.59 – 8.47 (m, 1H), 8.37 (s, 1H), 7.83 (dd, J = 2.1, 0.9 Hz, 1H), 7.35 (s, 1H), 7.03 (dd, J = 7.3, 2.0 Hz, 1H), 6.88 (s, 1H), 4.25 (dd, J = 9.8, 6.7 Hz, 1H), 4.11 (dd, J = 9.8, 6.4 Hz, 1H), 3.74 (t, J = 6.5 Hz, 1H), 3.67 – 3.54 (m, 2H), 3.28 – 3.16 (m, 4H), 2.46 (s, 3H), 1.97 – 1.87 (m, 1H), 1.76 – 1.58 (m, 4H), 0.87 – 0.75 (m, 4H). 459

Example 473: N-[5-[2-methyl-5-[[(2S)-1,3,3-trimethylazetidin-2-yl]methoxy ]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 9 mg, 73.7%) was prepared by the similar method of Example 8 using tert-butyl (S)-2-(hydroxymethyl)-3,3-dimethylazetidine-1-carboxylate instead of (2S,4R)- tert-butyl 4-hydroxy-2-(trifluoromethyl)piperidine-1-carboxylate. The methylation step followed a similar method of Example 10. MS (ESI): mass calcd. for C ₂₄ H ₂₉ N ₅ O ₂ , 419.2; m/z found, 420.3 [M+H] ⁺ .1H NMR (500 MHz, DMSO-d6) δ 11.06 (s, 1H), 8.55 (dt, J = 7.3, 0.9 Hz, 1H), 8.35 (s, 1H), 7.80 (dd, J = 2.0, 0.9 Hz, 1H), 7.34 (s, 1H), 7.00 (dd, J = 7.2, 2.0 Hz, 1H), 6.87 – 6.82 (m, 1H), 4.15 – 4.05 (m, 2H), 3.01 (d, J = 5.6 Hz, 1H), 2.93 (t, J = 6.4 Hz, 1H), 2.50 – 2.48 (m, 1H), 2.46 (s, 3H), 2.17 (s, 3H), 1.97 – 1.87 (m, 1H), 1.11 (s, 3H), 1.00 (s, 3H), 0.87 – 0.77 (m, 4H). Example 474: N-[5-[5-methyl-2-[[(2S)-morpholin-2-yl]methoxy]-3-pyridyl]py razolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. ared using methods analogous to those described in Example 136. MS (ESI): mass calcd. for C22H25N5O3, 407.2; m/z found, 408.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.41 (br. s., 1H), 8.25 (d, J = 7.2 Hz, 1H), 7.96 (d, J = 1.6 Hz, 1H), 7.65 (s, 1H), 7.52 (d, J = 2.0 Hz, 1H), 7.01 (dd, J = 1.8, 7.2 Hz, 1H), 6.94 (s, 1H), 4.37 (d, J = 5.2 Hz, 2H), 3.98 - 3.84 (m, 2H), 3.74 - 3.62 (m, 1H), 3.05 - 2.74 (m, 4H), 2.31 (s, 3H), 1.63 - 1.51 (m, 1H), 1.20 - 1.08 (m, 2H), 0.96 - 0.83 (m, 2H). 460

Example 475: 3-[[6-(difluoromethoxy)-4-[2-([1,2,4]triazolo[1,5-a]pyridin- 7- ylamino)pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dime thyl-propanenitrile. sing a similar method described in Example 682, except tBuXPhos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C24H20F2N8O2, 490.2; m/z found, 491.1 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 9.83 (s, 1H), 8.73 (dd, J = 7.2, 1.0 Hz, 1H), 8.70 (dd, J = 7.4, 0.7 Hz, 1H), 8.24 (s, 1H), 8.15 (s, 1H), 8.12 (dd, J = 2.4, 0.7 Hz, 1H), 7.90 (dd, J = 2.1, 0.9 Hz, 1H), 7.84 – 7.50 (m, 1H), 7.28 (d, J = 1.4 Hz, 1H), 7.07 – 7.01 (m, 2H), 6.27 (d, J = 0.9 Hz, 1H), 4.21 (s, 2H), 1.36 (s, 6H). Example 476: N-[5-[5-cyano-2-[[(3R)-pyrrolidin-3-yl]methoxy]phenyl]pyrazo lo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide. using methods analogous to those described in Example 100. MS (ESI): mass calcd. for C ₂₃ H ₂₃ N ₅ O ₂ , 401.2; m/z found, 402.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.07 (s, 1H), 8.58 – 8.50 (m, 1H), 7.91 – 7.88 (m, 1H), 7.87 – 7.83 (m, 1H), 7.75 – 7.69 (m, 1H), 7.38 – 7.27 (m, 1H), 6.99 (dd, J = 7.2, 2.0 Hz, 1H), 6.85 (s, 1H), 4.16 – 3.98 (m, 461

2H), 2.85 – 2.52 (m, 4H), 2.42 – 2.32 (m, 1H), 1.97 – 1.88 (m, 1H), 1.83 – 1.72 (m, 1H), 1.45 – 1.33 (m, 1H), 0.88 – 0.76 (m, 4H). Example 477: (2*R, 1*S)-N-[5-[5-cyano-2-(1-morpholin-2-ylethoxy)phenyl]pyrazolo [1,5- a]pyridin-2-yl]cyclopropanecarboxamide. d using synthetic methods analogous to those described in Example 100 and chiral separation methods similar to those in Example 5. MS (ESI): mass calcd. for C24H25N5O3, 431.2; m/z found, 431.9 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 11.07 (s, 1H), 8.54 (d, J = 7.2 Hz, 1H), 7.90 (d, J = 2.2 Hz, 1H), 7.85 – 7.77 (m, 2H), 7.34 (d, J = 8.8 Hz, 1H), 7.06 (dd, J = 7.2, 2.0 Hz, 1H), 6.85 (s, 1H), 4.68 – 4.59 (m, 1H), 3.85 – 3.71 (m, 1H), 3.52 – 3.38 (m, 2H), 2.80 – 2.69 (m, 1H), 2.69 – 2.52 (m, 2H), 1.98 – 1.89 (m, 1H), 1.20 (d, J = 6.3 Hz, 3H), 1.03 – 0.95 (m, 1H), 0.86 – 0.77 (m, 4H). Example 478: 4-[[(2R)-morpholin-2-yl]methoxy]-3-[2-(2-pyridylamino)pyrazo lo[1,5-a]pyridin- 5-yl]benzonitrile. red using a similar coupling method described in Example 198, followed by a Boc-deprotection step similar to that described in Example 9, Step B. MS (ESI): 462

mass calcd. for C24H22N6O2, 426.2; m/z found, 427.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CD3CN) δ 8.37 - 8.32 (m, 1H), 8.25 - 8.21 (m, 1H), 7.97 (br. s., 1H), 7.79 (d, J = 2.0 Hz, 1H), 7.72 (dd, J = 2.0, 8.8 Hz, 1H), 7.67 - 7.61 (m, 2H), 7.40 - 7.36 (m, 1H), 7.18 (d, J = 8.4 Hz, 1H), 6.94 (dd, J = 1.6, 7.2 Hz, 1H), 6.86 - 6.80 (m, 1H), 6.76 (s, 1H), 4.13 - 4.03 (m, 2H), 3.82 - 3.77 (m, 1H), 3.77 - 3.70 (m, 1H), 3.57 - 3.46 (m, 1H), 2.88 - 2.82 (m, 1H), 2.73 - 2.68 (m, 2H), 2.64 - 2.56 (m, 1H) Example 479: N-[5-[2-[[(1R,5S)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl]oxy]-5 -prop-1-ynyl- phenyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. prop-1-yn-1-yl)phenyl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide. To a 10 mL vial charged with N-(5-bromopyrazolo[1,5-a]pyridin- 2-yl)cyclopropanecarboxamide (Intermediate 2, 303 mg, 1.08 mmol), (2-fluoro-5-(prop-1-yn-1- yl)phenyl)boronic acid (244 mg, 1.37 mmol), chloro(2-dicyclohexylphosphino-2',6'- diisopropoxy-1,1'biphenyl)[2-(2'-amino-1,1'-biphenyl)]pallad ium(II) (20 mg, 0.026 mmol), was added 0.5 M tribasic potassium phosphate (2.8 mL) and dioxane (3.6 mL). The vial was evacuated and backfilled 2x with nitrogen. The reaction mixture was placed on a preheated 90 °C heating block for 60 min. Then, the reaction mixture was allowed to cool to room temperature. The reaction mixture was diluted with EtOAc (20 mL) then the mixture was passed through a pad of 1:1 celite: MgSO4. The pad was rinsed with EtOAc (2 x 15 mL). The combined organics were concentrated, then purified (FCC, SiO ₂ , 0-35% EtOAc/hexanes) to privde the title compound (306 mg, 94% purity, 80% yield). MS (ESI): mass calculated (calcd.) for C ₂₀ H ₁₆ FN3O, 333.1; m/z found, 334.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.08 (s, 1H), 8.58 (dt, J = 7.2, 1.0 Hz, 1H), 7.79 (dt, J = 2.1, 1.1 Hz, 1H), 7.64 (dd, J = 7.6, 2.2 Hz, 1H), 7.50 – 7.43 463

(m, 1H), 7.33 (dd, J = 10.8, 8.5 Hz, 1H), 6.99 (dt, J = 7.2, 2.0 Hz, 1H), 6.89 (s, 1H), 2.05 (s, 3H), 1.97 – 1.88 (m, 1H), 0.87 – 0.74 (m, 4H). Step B: N-[5-[2-[[(1R,5S)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl]oxy]-5 -prop-1-ynyl- phenyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. The title compound was prepared using the methods described for Example 165. MS (ESI): mass calcd. for C27H28N4O3, 456.2; m/z found, 457.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.03 (s, 1H), 8.45 (dt, J = 7.2, 1.0 Hz, 1H), 7.88 (dd, J = 2.0, 0.9 Hz, 1H), 7.43 (d, J = 2.2 Hz, 1H), 7.37 (dd, J = 8.5, 2.2 Hz, 1H), 7.12 – 7.03 (m, 2H), 6.79 (s, 1H), 4.65 (p, J = 6.4 Hz, 1H), 3.62 – 3.41 (m, 4H), 2.92 (d, J = 8.1 Hz, 2H), 2.35 – 2.18 (m, 3H), 2.02 (s, 3H), 1.97 – 1.83 (m, 1H), 1.62 (ddd, J = 13.7, 6.6, 2.5 Hz, 2H), 0.88 – 0.75 (m, 4H). Example 480: N-[5-[2-[[(1R,5S)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl]oxy]-5 -propanoyl- phenyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. olated as a by-product from Example 479. MS (ESI): mass calcd. for C27H30N4O4, 474.2; m/z found, 457.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.04 (s, 1H), 8.50 (dt, J = 7.2, 1.0 Hz, 1H), 8.04 – 7.93 (m, 3H), 7.22 (d, J = 8.8 Hz, 1H), 7.14 (dd, J = 7.2, 2.0 Hz, 1H), 6.82 (s, 1H), 4.80 (p, J = 6.2 Hz, 1H), 3.63 – 3.44 (m, 4H), 3.18 (d, J = 5.2 Hz, 1H), 3.06 (q, J = 7.2 Hz, 2H), 2.95 (d, J = 8.3 Hz, 2H), 2.39 – 2.22 (m, 3H), 1.98 – 1.87 (m, 1H), 1.68 (ddd, J = 13.8, 6.2, 2.4 Hz, 2H), 1.10 (t, J = 7.2 Hz, 3H), 0.89 – 0.73 (m, 4H). Example 481: N-[5-[5-(difluoromethyl)-2-[[(1R,5S)-3-oxa-9-azabicyclo[3.3. 1]nonan-7- yl]oxy]phenyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarbox amide. 464

prepared using methods analogous to those described in Example 479. MS (ESI): mass calcd. for C25H26F2N4O3, 468.2; m/z found, 469.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.04 (s, 1H), 8.49 (dd, J = 7.2, 1.0 Hz, 1H), 7.92 (dd, J = 2.0, 0.9 Hz, 1H), 7.68 – 7.61 (m, 1H), 7.61 – 7.52 (m, 1H), 7.24 (d, J = 8.7 Hz, 1H), 7.10 (dd, J = 7.3, 2.0 Hz, 1H), 7.01 (t, J = 56.1 Hz, 1H), 6.82 (s, 1H), 4.73 (p, J = 6.2 Hz, 1H), 3.63 – 3.42 (m, 4H), 2.94 (d, J = 8.2 Hz, 2H), 2.31 (m, J = 14.2, 8.6, 6.2 Hz, 3H), 1.99 – 1.86 (m, 1H), 1.66 (ddd, J = 13.8, 6.5, 2.5 Hz, 2H), 0.90 – 0.74 (m, 4H). Example 482: N-[5-[5-(difluoromethyl)-2-[[(1R,5S)-9-methyl-3-oxa-9-azabic yclo[3.3.1]nonan- 7-yl]oxy]phenyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarb oxamide. prepared by treating N-[5-[5-(difluoromethyl)-2-[[(1R,5S)-3- oxa-9-azabicyclo[3.3.1]nonan-7-yl]oxy]phenyl]pyrazolo[1,5-a] pyridin-2- yl]cyclopropanecarboxamide (Example 481) with methylation conditions from Example 164. MS (ESI): mass calcd. for C26H28F2N4O3, 482.2; m/z found, 483.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.03 (s, 1H), 8.50 – 8.41 (m, 1H), 8.10 (dd, J = 2.0, 0.9 Hz, 1H), 7.67 (dd, J = 2.3, 1.2 Hz, 1H), 7.59 – 7.51 (m, 1H), 7.19 (dd, J = 7.3, 2.0 Hz, 1H), 7.14 (s, 1H), 7.13 – 6.86 (m, 1H), 6.80 (s, 1H), 4.79 – 4.59 (m, 1H), 3.78 (dd, J = 10.8, 2.4 Hz, 2H), 3.48 (d, J = 10.7 Hz, 2H), 465

2.67 – 2.58 (m, 2H), 2.47 – 2.33 (m, 5H), 1.97 – 1.86 (m, 1H), 1.68 – 1.57 (m, 2H), 0.82 (tt, J = 7.8, 3.0 Hz, 4H). ¹⁹ F NMR (376 MHz, DMSO-d6) δ -106.99. Example 483: 3-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]pyrid in-5-yl]-4-(4- hydroxycyclohexoxy)benzonitrile. epared using methods analogous to those described in Example 198. MS (ESI): mass calcd. for C26H26N6O2, 454.2; m/z found, 455.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.17 (s, 1H), 8.57 – 8.51 (m, 1H), 7.87 (d, J = 2.2 Hz, 1H), 7.83 (s, 1H), 7.69 (dd, J = 2.1, 0.9 Hz, 1H), 7.37 (d, J = 8.9 Hz, 1H), 7.02 (s, 1H), 6.94 (dd, J = 7.2, 2.0 Hz, 1H), 6.81 (s, 1H), 4.64 – 4.57 (m, 1H), 4.57 – 4.52 (m, 1H), 3.53 (s, 1H), 2.45 (s, 3H), 2.30 (s, 3H), 2.05 – 1.96 (m, 2H), 1.79 – 1.70 (m, 2H), 1.51 – 1.40 (m, 2H), 1.40 – 1.30 (m, 2H). Example 484: 3-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]pyrid in-5-yl]-4-(2- hydroxy-2-methyl-propoxy)benzonitrile. epared using methods analogous to those described in Example 198. MS (ESI): mass calcd. for C ₂₄ H ₂₄ N ₆ O ₂ , 428.2; m/z found, 429.2 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl3) δ 8.38 (dt, J = 7.1, 0.9 Hz, 1H), 7.71 – 7.64 (m, 2H), 7.58 (s, 1H), 7.48 (dd, J 466

= 2.0, 0.9 Hz, 1H), 7.08 – 7.02 (m, 2H), 6.85 (dd, J = 7.2, 1.9 Hz, 1H), 6.55 (s, 1H), 3.91 (s, 2H), 2.59 (s, 3H), 2.44 (s, 3H), 1.97 (s, 1H), 1.28 (s, 6H). Example 485: N-[5-[6-chloro-3-(1-methylazetidin-3-yl)oxy-pyridazin-4-yl]p yrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. loropyridazin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide. To a mixture of Intermediate 3 (1.72 g, 5.27 mmol, 1.20 equiv), 4- bromo-3,6-dichloropyridazine (1.00 g, 4.39 mmol, 1.00 equiv), K2CO3 (2.43 g, 17.6 mmol, 4.00 equiv), 1,4-dioxane (15 mL) and water (3 mL) was sparged with nitrogen for 1 min and treated with PdCl ₂ (dtbpf) (286 mg, 0.439 mmol.10 mol%). The mixture was stirred at 80 °C for 2 hours and then concentrated to dryness in vacuo. The crude material was purified by silica gel chromatography (0-100% EtOAc in petroleum ether) to give the title compound (800 mg, 2.30 mmol, 52% yield) as a yellow solid. Step B: N-[5-[6-chloro-3-(1-methylazetidin-3-yl)oxy-pyridazin-4-yl]p yrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. To a suspension of 1-methylazetidin-3-ol hydrochloride (160 mg, 1.29 mmol, 1.50 equiv) in DMA (3 mL) was added NaH (60 wt%, 172 mg, 4.31 mmol, 5.00 equiv). The resulting mixture was stirred for 10 minutes and then treated with a solution of N-(5-(3,6-dichloropyridazin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide (300 mg, 0.86 mmol, 1.00 equiv) in DMA (2 mL). The resulting mixture was stirred at 80 °C for 2 h and then quenched with water (50 mL) and extracted with EtOAc (2 x 100 mL). The combined organics were dried with Na2SO4, filtered and concentrated in vacuo. The crude product was purified by silica gel chromatography (eluent: petroleum ether: ethyl acetate = 1:0 to 0:1) to afford the impure product, the product was purified by preparative 467

HPLC using a Waters Xbridge Prep OBD C18150 mm x 30 mm x 5 µm column (eluent: 20% to 50% (v/v) CH3CN and H2O with 10 mM NH4HCO3) to afford the product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (27.4 mg, 0.07 mmol 8% yield) as a yellow solid. MS (ESI): mass calcd. for C19H19ClN6O2, 398.1; m/z found, 399.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.16 (s, 1H), 8.66 (d, J = 7.2 Hz, 1H), 8.06 (s, 2H), 7.23 - 7.17 (m, 1H), 6.98 (s, 1H), 5.35 - 5.25 (m, 1H), 3.77 - 3.66 (m, 2H), 3.14 - 3.07 (m, 2H), 2.29 (s, 3H), 1.99 - 1.89 (m, 1H), 0.91 - 0.74 (m, 4H). Example 486: 5-[6-methyl-3-[[(1S,5R)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl] oxy]pyridazin-4- yl]-N-pyrazin-2-yl-pyrazolo[1,5-a]pyridin-2-amine. as prepared using methods analogous to those described in Example 488. MS (ESI): mass calcd. for C ₂₃ H ₂₄ N ₈ O ₂ , 444.2; m/z found, 445.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.28 (s, 1H), 8.63 (d, J = 1.5 Hz, 1H), 8.60 (d, J = 7.2 Hz, 1H), 8.30 - 8.17 (m, 2H), 8.01 (d, J = 2.8 Hz, 1H), 7.71 (s, 1H), 7.23 (dd, J = 7.3, 2.0 Hz, 1H), 6.90 (s, 1H), 5.50 (p, J = 5.8 Hz, 1H), 3.69 - 3.51 (m, 4H), 2.95 (d, J = 7.8 Hz, 2H), 2.57 (s, 3H), 2.45 - 2.28 (m, 2H), 1.85 (ddd, J = 14.3, 5.4, 2.2 Hz, 2H). Example 487: [4-[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- methyl-pyridazin-3-yl]oxycyclohexyl] acetate. 468

s isolated as a side product from Step E in Example 488. MS (ESI): mass calcd. for C26H29N7O3, 487.2; m/z found, 488.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.22 (s, 1H), 8.63 (dt, J = 7.2, 0.9 Hz, 1H), 7.94 (dd, J = 2.0, 0.9 Hz, 1H), 7.71 (s, 1H), 7.09 (dd, J = 7.3, 2.0 Hz, 1H), 7.00 (s, 1H), 6.91 (s, 1H), 5.41 – 5.29 (m, 1H), 4.83 – 4.72 (m, 1H), 2.57 (s, 3H), 2.46 (s, 3H), 2.30 (s, 3H), 2.19 – 2.06 (m, 2H), 2.01 (s, 3H), 1.96 – 1.86 (m, 2H), 1.77 – 1.64 (m, 2H), 1.64 – 1.52 (m, 2H). Example 488: 4-[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]py ridin-5-yl]-6- methyl-pyridazin-3-yl]oxycyclohexanol. -methyl-3-oxo-2,3-dihydropyridazin-4-yl)pyrazolo[1,5-a]pyrid in- 2-yl)carbamate. To flask charged with tert-butyl (5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2- yl)pyrazolo[1,5-a]pyridin-2-yl)carbamate (4.20 g, 11.6 mmol, 1.10 equiv), 4-bromo-6- methylpyridazin-3(2H)-one (2.00 g, 10.6 mmol, 1.00 equiv), PdCl ₂ (dppf) (229 mg, 0.31 mmol, 3 mol%) was evacuated and backfilled with N2 (2x) then 1,4-dioxane (30 mL) and tribasic potassium phosphate (0.5 M, 30 mL, 15 mmol, 1.4 equiv) was added and the resulting mixture was stirred at 60 °C. After 2 h, the reaction was cooled to 23 °C and the mixture was poured in to 469

150 mL of stirring water resulting in precipitate formation. The solids were collected by filtration and dried in vacuo overnight to provide the title compound (3.87 g, 11.4 mmol, 107%) which was used as in the following reaction. Step B: 4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridazin-3(2 H)-one. To a solution of tert-butyl (5-(6-methyl-3-oxo-2,3-dihydropyridazin-4-yl)pyrazolo[1,5-a] pyridin-2- yl)carbamate (1.27 g, 3.73 mmol, 1.00 equiv) in DCM (17 mL) was added TFA (2.85 mL, 37.3 mmol, 10.0 equiv) at 23 °C. After 1h, the reaction mixture was concentrated to dryness and then was added sat. aq. NaHCO3 (50 mL) resulting in precipitate formation. The solids were collected by filtration and dried in vacuo overnight to give (0.70 g, 2.90 mmol, 78% yield) as a tan solid which was used as in the following reaction Step C: 4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyrid in-5-yl)-6- methylpyridazin-3(2H)-one. To a vial charged with 4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridazin-3(2H)-one (680 mg, 2.82 mmol, 1.00 equiv), Cs ₂ CO ₃ (3.00 g, 9.20 mmol, 3.27 equiv), tBuBrettPhos Pd G3 (128 mg, 0.15 mmol, 5 mol%) was evacuated and backfilled with Argon (2x) and then was added 1,4-dioxane (7 mL) followed by 4-chloro-2,6-dimethypyrimidine (590 mg, 4.14 mmol, 1.50 equiv) as a solution in 1,4-dioxane (3 mL). The resulting mixture was stirred at 90 °C for 4 hours and then cooled to 23 °C. The reaction mixture was diluted with EtOAc and the solids collected by filtration. The solids were washed with water and then dried in vacuo overnight to give the title compound (710 mg, 2.04 mmol, 73% yield) as brown solid which was used as is in the following reaction. Step D: 5-(3-chloro-6-methylpyridazin-4-yl)-N-(2,6-dimethylpyrimidin -4- yl)pyrazolo[1,5-a]pyridin-2-amine. To vial containing 4-(2-((2,6-dimethylpyrimidin-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridazin-3(2H )-one (205 mg, 0.59 mmol, 1.00 equiv), phosphoryl chloride (0.55 mL, 5.9 mmol, 10.0 equiv) in MeCN (1.2 mL) was stirred at 90 °C. After 1.5 h, additional phosphoryl chloride (0.27 mL, 2.95 mmol, 5.00 equiv) was added and stirred for 1 hr and then cooled to 23 °C. The reaction mixture was then diluted with MeCN and treated with 1 N NaOH until the aqueous became basic which resulted in precipitate formation. The solids were collected by filtration and dried in vacuo overnight to give (224 mg, 0.61 mmol, 104% yield) as a dark brown solid which was used as is in the following reaction. 470

Step E: 4-[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]py ridin-5-yl]-6- methyl-pyridazin-3-yl]oxycyclohexanol. To a vial charged with trans-1,4-cyclohexanediol (221 mg, 1.90 mmol, 4.00 equiv), 5-(3-chloro-6-methylpyridazin-4-yl)-N-(2,6-dimethylpyrimidin -4- yl)pyrazolo[1,5-a]pyridin-2-amine (173 mg, 0.47 mmol, 1.00 equiv) and DMA (4 mL) was added KO ^t Bu (318 mg, 2.84 mmol, 6.00 equiv) and the resulting mixture was stirred at 50 °C. After 3 hrs, the mixture was concentrated and purified by silica gel chromatography (0-10% MeOH in DCM) to give the title compound (22 mg, 0.04 mmol, 8% yield). MS (ESI): mass calcd. for C24H27N7O2, 445.2; m/z found, 446.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.22 (s, 1H), 8.62 (dt, J = 7.2, 0.9 Hz, 1H), 7.93 (dd, J = 2.0, 0.9 Hz, 1H), 7.69 (s, 1H), 7.07 (dd, J = 7.2, 2.0 Hz, 1H), 7.00 (s, 1H), 6.90 (s, 1H), 5.33 – 5.20 (m, 1H), 4.57 (s, 1H), 3.66 – 3.49 (m, 1H), 2.57 (s, 3H), 2.46 (s, 3H), 2.30 (s, 3H), 2.13 (m, J = 12.9, 3.9 Hz, 2H), 1.89 – 1.76 (m, 2H), 1.61 – 1.48 (m, 2H), 1.43 – 1.30 (m, 2H). Example 489: N-[5-[3-[[(3R)-1-methylpyrrolidin-3-yl]methoxy]-4-pyridyl]py razolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. was prepared using methods analogous to those described in Example 136. MS (ESI): mass calcd. for C ₂₂ H ₂₅ N ₅ O ₂ , 391.2; m/z found, 392.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.08 (s, 1H), 8.58 (d, J = 7.1 Hz, 1H), 8.48 (s, 1H), 8.32 – 8.26 (m, 1H), 7.85 (d, J = 2.0 Hz, 1H), 7.48 (d, J = 4.8 Hz, 1H), 7.05 (dd, J = 7.2, 2.0 Hz, 1H), 6.89 (s, 1H), 4.06 (d, J = 6.3 Hz, 2H), 2.45 – 2.34 (m, 2H), 2.34 – 2.25 (m, 1H), 2.20 (s, 3H), 1.97 – 1.81 (m, 2H), 1.57 – 1.44 (m, 1H), 0.82 (tt, J = 7.9, 3.0 Hz, 4H). 471

Example 490: N-[5-[2-chloro-5-[[(3R)-1-methylpyrrolidin-3-yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. s prepared using methods analogous to those described for Intermediate 10. MS (ESI): mass calcd. for C22H24ClN5O2, 425.2; m/z found, 426.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.10 (s, 1H), 8.58 (d, J = 7.3 Hz, 1H), 8.28 (s, 1H), 7.88 (d, J = 1.9 Hz, 1H), 7.59 (s, 1H), 7.05 (dd, J = 7.2, 2.0 Hz, 1H), 6.90 (s, 1H), 4.05 (d, J = 6.3 Hz, 2H), 2.43 – 2.31 (m, 2H), 2.31 – 2.24 (m, 1H), 2.19 (s, 3H), 1.97 – 1.79 (m, 2H), 1.56 – 1.42 (m, 1H), 0.89 – 0.75 (m, 4H). Example 491: N-[5-[2-chloro-5-(1-methylazetidin-3-yl)oxy-4-pyridyl]pyrazo lo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide. s prepared using methods analogous to those described for Intermediate 10. MS (ESI): mass calcd. for C ₂₀ H ₂₀ ClN ₅ O ₂ , 397.1; m/z found, 398.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.10 (s, 1H), 8.59 (dd, J = 7.2, 1.0 Hz, 1H), 8.03 (s, 1H), 7.89 (dd, J = 2.0, 0.9 Hz, 1H), 7.62 (s, 1H), 7.08 (dd, J = 7.3, 2.0 Hz, 1H), 6.96 – 6.88 (m, 1H), 4.95 (p, J = 5.5 Hz, 1H), 3.76 – 3.64 (m, 2H), 3.06 – 2.94 (m, 2H), 2.26 (s, 3H), 1.99 – 1.83 (m, 1H), 0.82 (m, J = 7.8, 3.0 Hz, 4H). 472

Example 492: N-[5-[2-chloro-5-[[(1S,5R)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. s prepared using methods analogous to those described for Intermediate 10, followed by a Boc-deprotection step similar to that desribed in Example 9, Step B. MS (ESI): mass calcd. for C ₂₃ H ₂₄ ClN ₅ O ₃ , 453.2; m/z found, 454.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.09 (s, 1H), 8.58 (dt, J = 7.3, 1.0 Hz, 1H), 8.29 (s, 1H), 7.88 (dd, J = 2.1, 0.9 Hz, 1H), 7.60 (s, 1H), 7.07 (dd, J = 7.3, 2.0 Hz, 1H), 6.91 (s, 1H), 5.41 (tt, J = 10.9, 6.0 Hz, 1H), 3.70 (d, J = 10.7 Hz, 2H), 3.61 (dt, J = 10.9, 2.2 Hz, 2H), 2.92 (s, 2H), 2.26 (dd, J = 12.3, 6.1 Hz, 2H), 1.98 – 1.87 (m, 1H), 1.69 (td, J = 11.9, 4.8 Hz, 2H), 0.89 – 0.72 (m, 4H). Example 493: 1-[[6-(difluoromethyl)-4-[2-[(2,6-dimethylpyrimidin-4-yl)ami no]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2-methyl-propan-2-ol. epared using methods analogous to those described in Example 329 Step D followed by the method in Example 52. MS (ESI): mass calcd. for C ₂₃ H ₂₄ F ₂ N ₆ O ₂ , 454.2; m/z found, 455.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.22 (s, 1H), 8.62 (dt, J = 7.2, 0.9 Hz, 1H), 8.59 (s, 1H), 7.95 (dd, J = 2.0, 0.9 Hz, 1H), 7.78 (s, 1H), 7.15 473

– 7.07 (m, 1H), 7.03 (s, 1H), 6.96 (t, J = 56.3 Hz, 1H), 6.87 (s, 1H), 4.70 (s, 1H), 4.03 (s, 2H), 2.46 (s, 3H), 2.30 (s, 3H), 1.17 (s, 6H). ¹⁹ F NMR (376 MHz, DMSO-d6) δ -113.22. Example 494: 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- (trifluoromethyl)-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile . epared using a method analogous to that described in Example 329 Step D followed by the method in Example 52. MS (ESI): mass calcd. for C ₂₄ H ₂₂ F ₃ N ₇ O, 481.2; m/z found, 482.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.25 (s, 1H), 8.70 (s, 1H), 8.64 (dd, J = 7.2, 1.0 Hz, 1H), 8.02 (s, 1H), 7.99 (dd, J = 2.1, 0.9 Hz, 1H), 7.13 (dd, J = 7.2, 2.0 Hz, 1H), 7.03 (s, 1H), 6.91 (s, 1H), 4.41 (s, 2H), 2.46 (s, 3H), 2.31 (s, 3H), 1.39 (s, 6H). ¹⁹ F NMR (376 MHz, DMSO-d6) δ -65.23. Example 495: 5-[2-chloro-5-[[(1S,4S,7R)-2-oxa-5-azabicyclo[2.2.1]heptan-7 -yl]oxy]-4- pyridyl]-N-(2,6-dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridi n-2-amine. prepared using a method analogous to that described in Example 329 Step D, the method in Example 52, followed by Boc-deprotection using the conditions desribed in Example 9, Step B. MS (ESI): mass calcd. for C23H22ClN7O2, 463.2; m/z found, 474

464.1 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.22 (s, 1H), 8.62 – 8.58 (m, 1H), 8.51 (s, 1H), 7.86 – 7.82 (m, 1H), 7.62 (s, 1H), 7.04 – 6.97 (m, 2H), 6.88 (s, 1H), 4.95 (d, J = 2.3 Hz, 1H), 4.35 – 4.31 (m, 1H), 3.87 (dd, J = 7.3, 2.0 Hz, 1H), 3.74 (d, J = 7.2 Hz, 1H), 3.49 (t, J = 2.2 Hz, 1H), 3.10 (d, J = 10.4 Hz, 1H), 2.81 (d, J = 10.6 Hz, 1H), 2.46 (s, 3H), 2.30 (s, 3H). Example 496: N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methoxy-5-[[(2S)-morphol in-2- yl]methoxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. 5-[2-chloro-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N- (2,6-dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine (Example 497, Step A, 50 mg, 0.0883 mmol) MeOH (0.537 mL, 0.791 g/mL, 13.25 mmol) and DMF (0.239 mL, 0.944 g/mL, 3.092 mmol) was added NaOMe (30% in MeOH) (0.0491 mL, 5.4 M, 0.265 mmol). The reaction was stirred at 100 °C for 1h, then at 120 °C for 1h, then at 140 °C for 4h. The title compound was extracted using 20-80% ACN-H2O with 20 mM of aq. NH4OH as modifier to yield 6.6 mg (16%). MS (ESI): mass calcd. for C ₂₄ H ₂₇ N ₇ O ₃ , 461.2; m/z found, 462.2 [M+H] ⁺ . ¹ H NMR (500 MHz, CD3OD) δ 8.34 (dt, J = 7.1, 0.9 Hz, 1H), 7.82 (s, 1H), 7.74 (dd, J = 2.0, 0.9 Hz, 1H), 6.96 – 6.91 (m, 2H), 6.81 (d, J = 0.5 Hz, 1H), 6.79 (s, 1H), 3.99 – 3.88 (m, 2H), 3.81 (s, 3H), 3.80 – 3.74 (m, 1H), 3.68 (ddd, J = 11.5, 5.8, 3.5 Hz, 1H), 3.51 (ddd, J = 11.5, 9.4, 4.8 Hz, 1H), 2.77 (dd, J = 12.5, 2.4 Hz, 1H), 2.69 – 2.63 (m, 2H), 2.56 (dd, J = 12.5, 10.5 Hz, 1H), 2.43 (s, 3H), 2.28 (d, J = 0.7 Hz, 3H). Example 497: 5-[2-chloro-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-(2 ,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. 475

((6-chloro-4-(2-((2,6-dimethylpyrimidin-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)pyridin-3-yl)oxy)methyl )morpholine-4-carboxylate. To a vial was added Intermediate 26 (1700 mg, 4.64 mmol), tert-butyl (S)-2- ((tosyloxy)methyl)morpholine-4-carboxylate (2066 mg, 5.56 mmol), cesium carbonate (3624 mg, 11.12 mmol) and DMA (37 mL, 4.64 mmol). The mixture was heated at 60 °C for 6 hr, then at 100 °C for 2 hr. The mixture was diluted with water/brine then extracted with ethyl acetate. After drying the organic layer with magnesium sulfate, the crude was purified via FCC (10-100% EtOAc/hexanes) to yield 975 mg (37%) of the title compound. Step B: 5-[2-chloro-5-[[(2S)-morpholin-2-yl]methoxy]-4-pyridyl]-N-(2 ,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. The title compound was prepared using the Boc-deprotection step desribed in Example 9, Step B. MS (ESI): mass calcd. for C23H24ClN7O2, 465.2; m/z found, 466.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.15 (s, 1H), 8.54 (dt, J = 7.2, 0.9 Hz, 1H), 8.23 (s, 1H), 7.92 (dd, J = 2.0, 0.9 Hz, 1H), 7.56 (s, 1H), 7.03 (dd, J = 7.2, 2.0 Hz, 1H), 6.92 (s, 1H), 6.85 (s, 1H), 4.10 (d, J = 4.7 Hz, 2H), 3.75 – 3.68 (m, 1H), 3.62 (ddd, J = 9.8, 7.1, 4.6 Hz, 1H), 3.40 (td, J = 10.6, 3.6 Hz, 1H), 2.73 (dd, J = 12.3, 2.4 Hz, 1H), 2.64 – 2.52 (m, 2H), 2.47 (d, J = 10.0 Hz, 2H), 2.39 (s, 4H), 2.25 – 2.18 (m, 3H). Example 498: (2R,3S)-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo [1,5-a]pyridin-5- yl]-6-methoxy-3-pyridyl]oxymethyl]tetrahydrofuran-3-ol. 476

repared using a method analogous to that described in Example 329 Steps A and D. MS (ESI): mass calcd. for C24H26N6O4, 462.2; m/z found, 463.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 10.19 (s, 1H), 8.62 – 8.51 (m, 1H), 8.02 (s, 1H), 7.87 – 7.78 (m, 1H), 7.02 (dd, J = 7.2, 2.0 Hz, 2H), 6.92 (s, 1H), 6.86 (s, 1H), 5.03 (d, J = 4.3 Hz, 1H), 4.17 – 4.11 (m, 1H), 4.10 – 4.03 (m, 2H), 3.87 – 3.74 (m, 6H), 2.46 (s, 3H), 2.30 (s, 3H), 1.95 – 1.86 (m, 1H), 1.75 – 1.61 (m, 1H). Example 499: (2R,3S)-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo [1,5-a]pyridin-5- yl]-6-(2,2,2-trifluoroethoxy)-3-pyridyl]oxymethyl]tetrahydro furan-3-ol. ethoxypyridin-3-yl)oxy)methyl)tetrahydrofuran-3-ol. The title compound was prepared using a similar tosic acid displacement method described in Example 329, Step A. Step B: (2R,3S)-2-(((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazol o[1,5-a]pyridin-5- yl)-6-methoxypyridin-3-yl)oxy)methyl)tetrahydrofuran-3-ol. The title compound was prepared using a coupling method similar to that described in Example 329, Step D. Step C: 4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyrid in-5-yl)-5- (((2R,3S)-3-hydroxytetrahydrofuran-2-yl)methoxy)pyridin-2(1H )-one. The title compound was prepared using an O-demethylation method similar to that described in Example 329, Step B. 477

Step D: (2R,3S)-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo [1,5-a]pyridin-5- yl]-6-(2,2,2-trifluoroethoxy)-3-pyridyl]oxymethyl]tetrahydro furan-3-ol. To a vial was added 4- (2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyridin -5-yl)-5-(((2R,3S)-3- hydroxytetrahydrofuran-2-yl)methoxy)pyridin-2(1H)-one (100 mg, 0.22 mmol), cesium carbonate (218 mg, 0.67 mmol), and DMA (2.2 mL, 0.1 M). Stirred mixture at pre-heated 100 °C block for 5 min. Added 2-iodo-1,1,1-trifluoroethane (0.067 mL, 0.67 mmol) and stirred for 40 min. Filtered through Celite pad, then purified via Basic ISCO (Gemini 5 uM NX-C18110 angstrom LC column 150 x 21.2 mm; 10-100% CH3CN / 20 mM aq NH3 over 15 min; 40 mL/min). The fractions containing product were lyophilized to yield the title compound (26 mg, 22%). MS (ESI): mass calcd. for C ₂₅ H ₂₅ F ₃ N ₆ O ₄ , 530.2; m/z found, 531.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.20 (s, 1H), 8.59 (d, J = 7.2 Hz, 1H), 8.06 (s, 1H), 7.90 – 7.86 (m, 1H), 7.11 (s, 1H), 7.05 (dd, J = 7.2, 2.0 Hz, 1H), 7.01 (s, 1H), 6.87 (s, 1H), 5.11 – 5.02 (m, 1H), 4.98 (q, J = 9.1 Hz, 2H), 4.18 – 4.09 (m, 3H), 3.86 – 3.77 (m, 3H), 2.46 (s, 3H), 2.30 (s, 3H), 1.97 – 1.88 (m, 1H), 1.74 – 1.64 (m, 1H). Example 500: 2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-5- [[(2R,3S)-3-hydroxytetrahydrofuran-2-yl]methoxy]-2-pyridyl]o xy]acetonitrile. red using methods analogous to those described in Example 499 and using bromoacetonitrile instead of 2-iodo-1,1,1-trifluoroethane in Step D. MS (ESI): mass calcd. for C ₂₅ H ₂₅ N ₇ O ₄ , 487.2; m/z found, 488.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 10.20 (s, 1H), 8.63 – 8.56 (m, 1H), 8.10 (s, 1H), 7.89 – 7.86 (m, 1H), 7.10 (s, 1H), 7.04 (dd, J = 7.2, 2.0 Hz, 1H), 7.01 (s, 1H), 6.88 (s, 1H), 5.20 (s, 2H), 5.05 (s, 1H), 4.18 – 4.10 (m, 3H), 3.88 – 3.75 (m, 3H), 2.46 (s, 3H), 2.30 (s, 3H), 1.96 – 1.87 (m, 1H), 1.74 – 1.66 (m, 1H). 478

Example 501: N-(2,6-dimethylpyrimidin-4-yl)-5-[2-(methylamino)-5-[[(2S)-m orpholin-2- yl]methoxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. yl (S)-2-(((6-chloro-4-(2-((2,6-dimethylpyrimidin-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)pyridin-3-yl)oxy)methyl )morpholine-4-carboxylate (Example 497, Step A, 100 mg, 0.177 mmol) Cs ₂ CO ₃ (115 mg, 0.353 mmol) and JosiPhos pre- catalyst gen.3 (16.3 mg, 0.0177 mmol) was evacuated and back-filled with N23x. Then, toluene (0.488 mL, 0.867 g/mL, 4.59 mmol) and methylamine (0.883 mmol) was added. The reaction mixture was heated to 90 °C overnight. After 5h, to the crude was added 30 mL of EtOAc and then washed with H2O 2x10 mL. The organics were collected and concentrated down. The crude was purified via FCC using 10% MeOH/EtOAc. To this intermediate was performed a Boc- deprotection step similar to that desribed in Example 9, Step B to yield 8.5 mg (21%) of the title compound. MS (ESI): mass calcd. for C24H28N8O2, 460.2; m/z found, 461.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CD3OD) δ 8.37 – 8.31 (m, 1H), 7.72 – 7.66 (m, 2H), 6.96 – 6.88 (m, 2H), 6.77 (s, 1H), 6.51 (s, 1H), 3.86 – 3.69 (m, 3H), 3.63 (dd, J = 9.8, 6.1 Hz, 1H), 3.48 (ddd, J = 11.5, 8.6, 5.6 Hz, 1H), 2.78 (s, 3H), 2.77 – 2.70 (m, 1H), 2.70 – 2.58 (m, 2H), 2.52 (dd, J = 12.6, 10.5 Hz, 1H), 2.43 (s, 3H), 2.29 (s, 3H). Example 502: 5-[2-(difluoromethoxy)-5-[[(2S)-morpholin-2-yl]methoxy]-4-py ridyl]-N-(2,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. 479

y)-5-fluoropyridin-4-yl)-N-(2,6-dimethylpyrimidin-4- yl)pyrazolo[1,5-a]pyridin-2-amine. To a solution of 4-bromo-2-(difluoromethoxy)-5- fluoropyridine (200 mg, 0.826 mmol), Intermediate 22 (362 mg, 0.992 mmol), Pd(dppf)Cl2 (68.2 mg, 0.826 mmol), aq. K3PO4 (0.5 M, 2.8 mL) and 1,4-dioxane (2.8 mL) was purged with N2 (evacuated and back-filled with N ₂ x 3). The resulting mixture was heated at 95 °C for 1 hour. The mixture was then cooled to 23 °C and extracted 2 x 10%IPA/DCM / water. The orgnics were combined, dried (MgSO4) and concentrated. The residue was purified by FCC (SiO2, 100% EtOAc) to afford desired product as a yellow oil (180 mg, 70% pure, 38% yield). MS (ESI): mass calcd. for C ₁₉ H ₁₅ F ₃ N ₆ O, 400.13; m/z found, 401.1 [M+H] ⁺ . Step B: tert-butyl (S)-2-(((6-(difluoromethoxy)-4-(2-((2,6-dimethylpyrimidin-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)pyridin-3-yl)oxy)methyl )morpholine-4-carboxylate. To a small vial containing 5-(2-(difluoromethoxy)-5-fluoropyridin-4-yl)-N-(2,6-dimethyl pyrimidin-4- yl)pyrazolo[1,5-a]pyridin-2-amine (180 mg, 0.45 mol) and tert-butyl (S)-2- (hydroxymethyl)morpholine-4-carboxylate (293 mg, 1.35 mmol) was added DMF (1.7 mL) followed by sodium hydride (60 wt% dispersion in mineral oil, 53.9 mg, 1.35 mmol) portion- wisely while stirring at rt. The suspension was heated at 90 °C for 16 h, then quenched with water. The crude was purified via prep. HPLC using 20-80% ACN-H2O with 20mM of NH4OH as modifier and the product was lyophilized to give the title compound (268 mg, 100%) which was used in the next step with some impurities remaining. Step C: 5-[2-(difluoromethoxy)-5-[[(2S)-morpholin-2-yl]methoxy]-4-py ridyl]-N-(2,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. The title compound was prepared using methods analogous to those described in Example 9 Step B. MS (ESI): mass calcd. for C24H25F2N7O3, 497.2; m/z found, 498.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.16 (s, 1H), 8.54 (dd, J = 7.2, 0.9 Hz, 1H), 8.05 (s, 1H), 7.92 (dd, J = 2.0, 0.9 Hz, 1H), 7.58 (t, J = 73.2 480

Hz, 1H), 7.18 (s, 1H), 7.02 (dd, J = 7.2, 2.0 Hz, 1H), 6.92 (s, 1H), 6.85 (s, 1H), 4.05 (d, J = 4.8 Hz, 2H), 3.71 (d, J = 10.9 Hz, 1H), 3.62 (t, J = 3.9 Hz, 1H), 3.40 (td, J = 10.6, 3.9 Hz, 1H), 2.73 (d, J = 12.1 Hz, 1H), 2.58 (dd, J = 10.1, 3.2 Hz, 2H), 2.48 (s, 1H), 2.39 (s, 3H), 2.25 – 2.21 (m, 3H). Example 503: N-[5-[2-(difluoromethoxy)-5-[[(2S)-morpholin-2-yl]methoxy]-4 - pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. repared using methods analogous to those described in Example 502. MS (ESI): mass calcd. for C ₂₂ H ₂₃ F ₂ N ₅ O ₄ , 459.2; m/z found, 460.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.04 (s, 1H), 8.53 (dt, J = 7.3, 0.9 Hz, 1H), 8.04 (s, 1H), 7.90 (dd, J = 2.0, 0.9 Hz, 1H), 7.58 (t, J = 73.2 Hz, 1H), 7.17 (s, 1H), 7.05 (dd, J = 7.3, 2.0 Hz, 1H), 6.90 – 6.73 (m, 1H), 4.04 (d, J = 4.8 Hz, 2H), 3.72 – 3.64 (m, 1H), 3.60 (dtd, J = 10.0, 4.8, 2.4 Hz, 1H), 3.38 (td, J = 10.8, 3.1 Hz, 1H), 2.73 (dd, J = 12.1, 2.4 Hz, 1H), 2.63 – 2.47 (m, 2H), 2.31 (s, 1H), 1.86 (dq, J = 7.8, 4.9, 4.1 Hz, 1H), 0.76 (tt, J = 7.9, 3.0 Hz, 4H). Example 504: N-[6-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]imidazo[1, 2-a]pyridin-2- yl]cyclopropanecarboxamide. 481

as prepared using the method analogous to that described in Example 158. MS (ESI): mass calcd. for C23H26N4O3, 406.2; m/z found, 407.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.12 (s, 1H), 8.99 (t, J = 1.4 Hz, 1H), 8.62 (s, 1H), 8.18 (s, 1H), 7.89 (s, 1H), 7.58 (d, J = 1.3 Hz, 2H), 4.64 (tt, J = 8.3, 3.7 Hz, 1H), 3.54 (tt, J = 8.4, 3.8 Hz, 1H), 2.63 (s, 3H), 2.09 – 1.99 (m, 2H), 1.99 – 1.91 (m, 1H), 1.81 – 1.70 (m, 2H), 1.59 – 1.45 (m, 2H), 1.41 – 1.27 (m, 2H), 0.91 – 0.77 (m, 4H). Example 505: N-[6-[2-methyl-5-[[(1S,5R)-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-4- pyridyl]imidazo[1,2-a]pyrazin-2-yl]cyclopropanecarboxamide. idazo[1,2-a]pyrazin-2-yl)cyclopropanecarboxamide. To a 0 °C mixture of 6-bromoimidazo[1,2-a]pyrazin-2-amine (2000 mg, 9.388 mmol) and DCM (60.1 mL, 1.326 g/mL, 939 mmol) and TEA (3.92 mL, 0.728 g/mL, 28.164 mmol) was added cyclopropanecarbonyl chloride (2159 mg, 20.65 mmol). The reaction was allowed to reach r.t. in 2 h while stirring. The crude material was concentrated down under vacuo to a yellow solid. The yellow solid was stirred with 20 mL of 2 M NH ₃ in MeOH for 2h. To the crude reaction mixture was added H2O while stirring, then filtered to afford an off-white solid (2.63 g, 100%). MS (ESI): mass calcd. for C10H9BrN4O, 281.1; m/z found, 283.0 [M+H] ⁺ . ¹ H NMR (400 MHz, 482

DMSO-d6) δ 11.33 (s, 1H), 8.92 (d, J = 1.3 Hz, 1H), 8.74 (s, 1H), 8.26 (s, 1H), 1.96 (p, J = 6.2 Hz, 1H), 0.84 (d, J = 6.1 Hz, 4H).), 3.31 (s, 3H), 1.36 (s, 6H). Step B. N-(6-(5-fluoro-2-methylpyridin-4-yl)imidazo[1,2-a]pyrazin-2- yl)cyclopropanecarboxamide. The title compound was prepared in the similar manner of Example 320 step A except N-(6-bromoimidazo[1,2-a]pyrazin-2-yl)cyclopropanecarboxamide from Step A was used instead of 6-bromoimidazo[1,2-a]pyrazin-2-amine (80 mg, 59%). Step C. N-(6-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy )-2-methylpyridin- 4-yl)imidazo[1,2-a]pyrazin-2-yl)cyclopropanecarboxamide. The title compound was prepared in the similar manner of Example 320 step C except sodium hydride was used instead of sodium tert-butoxide. Also, TFA was added to the crude reaction and stirred for 2h at r.t. The title compound was purified via preparative HPLC to afford (71.8 mg, 64%). MS (ESI): mass calcd. for C23H26N6O3, 434.2; m/z found, 435.20 [M+H] ⁺ . ¹ H NMR (500 MHz, CD3OD) δ 9.91 (d, J = 1.5 Hz, 1H), 8.90 – 8.86 (m, 1H), 8.16 (s, 1H), 8.12 (s, 1H), 7.99 (s, 1H), 4.92 (td, J = 5.4, 4.5, 3.1 Hz, 1H), 3.95 (ddd, J = 11.5, 2.8, 1.3 Hz, 2H), 3.85 (d, J = 11.4 Hz, 2H), 3.05 – 2.93 (m, 2H), 2.52 (s, 3H), 2.44 (dtd, J = 16.0, 6.3, 1.3 Hz, 2H), 2.16 – 2.04 (m, 2H), 1.91 (tt, J = 8.6, 4.9 Hz, 1H), 1.00 (dt, J = 4.7, 3.2 Hz, 2H), 0.96 – 0.87 (m, 2H). Example 506: 4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]imidazo[1,2-a]py razin-6-yl]-6- methyl-3-pyridyl]oxy]cyclohexanol. s prepared in the similar manner of Example 320 except (cis)- cyclohexane-1,4-diol was used instead of tert-butyl (1R,5S,7s)-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate and N-(2,6-dimethylpyrimidin-4-yl)-6-(5-fluoro-2- 483

methylpyridin-4-yl)imidazo[1,2-a]pyrazin-2-amine was used instead of 6-(5-fluoro-2- methylpyridin-4-yl)-N-(5-methylpyrazin-2-yl)imidazo[1,2-a]py razin-2-amine (10.8 mg, 8.4%). MS (ESI): mass calcd. for C ₂₄ H ₂₇ N ₇ O ₂ , 445.2; m/z found, 446.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.48 (s, 1H), 9.27 (s, 1H), 8.99 (s, 1H), 8.53 (s, 1H), 8.39 (s, 1H), 7.83 (s, 1H), 6.79 (s, 1H), 4.70 - 4.62 (m, 1H), 4.55 - 4.48 (m, 1H), 3.62 - 3.53 (m, 1H), 2.55 - 2.53 (m, 3H), 2.48 - 2.46 (m, 3H), 2.30 (s, 3H), 2.00 - 1.91 (m, 2H), 1.71 - 1.50 (m, 6H). Example 507: 4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]imidazo[1,2-a]py razin-6-yl]-6- methyl-3-pyridyl]oxy]cyclohexanol. prepared in the similar manner of Example 320 except (trans)- cyclohexane-1,4-diol was used instead of tert-butyl (1R,5S,7s)-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate and N-(2,6-dimethylpyrimidin-4-yl)-6-(5-fluoro-2- methylpyridin-4-yl)imidazo[1,2-a]pyrazin-2-amine was used instead of 6-(5-fluoro-2- methylpyridin-4-yl)-N-(5-methylpyrazin-2-yl)imidazo[1,2-a]py razin-2-amine (34.5 mg, 32%). MS (ESI): mass calcd. for C24H27N7O2, 445.2; m/z found, 446.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.45 (s, 1H), 9.22 (s, 1H), 8.97 (s, 1H), 8.52 (s, 1H), 8.41 (s, 1H), 7.82 (s, 1H), 6.81 (s, 1H), 4.62 - 4.58 (m, 1H), 4.57 - 4.47 (m, 1H), 3.59 - 3.49 (m, 1H), 2.54 (s, 3H), 2.48 (s, 3H), 2.30 (s, 3H), 2.11 - 2.00 (m, 2H), 1.86 - 1.75 (m, 2H), 1.65 - 1.52 (m, 2H), 1.40 - 1.27 (m, 2H) Example 508: N-[6-[5-(2-cyano-2-methyl-propoxy)-2-methyl-4-pyridyl]imidaz o[1,2-a]pyrazin- 2-yl]cyclopropanecarboxamide. 484

as prepared in the similar manner of Example 505 except 3- hydroxy-2,2-dimethylpropanenitrile was used instead of tert-butyl (1R,5S,7s)-7-hydroxy-3-oxa- 9-azabicyclo[3.3.1]nonane-9-carboxylate (38.2 mg, 30%). MS (ESI): mass calcd. for C21H22N6O2, 390.2; m/z found, 413.2 [M+H] ⁺ . ¹ H NMR (500 MHz, CD3OD) δ 9.24 (d, J = 1.5 Hz, 1H), 8.84 (dd, J = 1.5, 0.7 Hz, 1H), 8.20 (s, 1H), 8.17 (d, J = 0.7 Hz, 1H), 7.87 (s, 1H), 4.16 (s, 2H), 2.46 (s, 3H), 1.81 (td, J = 8.0, 4.1 Hz, 1H), 1.39 (s, 6H), 0.91 (dt, J = 4.6, 3.1 Hz, 2H), 0.83 (dt, J = 8.0, 3.2 Hz, 2H). Example 509: N-[5-[2-methyl-5-[[(3R)-1-methylpyrrolidin-3-yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. o-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide. The title compound was prepared using the method described in Intermediate 6, except 4-bromo-5-choro-2-methypyridine was used in place of 4-bromo-5- fluoro-2-methypyridine. Step B: N-[5-[2-methyl-5-[[(3R)-1-methylpyrrolidin-3-yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. To a 10 mL microwave vial was charged N-(5-(5-chloro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2 - yl)cyclopropanecarboxamide (209 mg, 0.64 mmol), RockPhos Pd G3 (28 mg, 0.03 mmol), and RockPhos (18 mg, 0.04 mmol) as solids. The vial was sealed then evac and backfilled with 485

argon (3x). To a separate 10 mL microwave vial was charged NaH (60% dispersion in mineral oil, 55 mg, 1.38 mmol). A solution of (R)-(1-methylpyrrolidin-3-yl)methanol (169 mg, 1.47 mmol) in toluene (2.18 mL, 0.3 M, 0.65 mmol) was then added in one portion. This mixture was allowed to stir for 15 min and was then was added to the above solids. The vial was then placed into a preheated 90 °C heating block for 16 hr. Diluted with 20 mL ethyl acetate and filtered though a pad of Celite. The filtrate was concentrated and purified via FCC (SiO ₂ , 0-10% (2M NH ₃ in MeOH)/DCM to yield 35 mg of the title compound as a colorless solid (35 mg, 13%). MS (ESI): mass calcd. for C23H27N5O2, 405.2; m/z found, 406.20 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.07 (s, 1H), 8.57 (d, J = 7.2 Hz, 1H), 8.31 (s, 1H), 7.82 (d, J = 1.9 Hz, 1H), 7.34 (s, 1H), 7.03 (dd, J = 7.2, 2.0 Hz, 1H), 6.88 (s, 1H), 4.00 (d, J = 6.2 Hz, 2H), 2.56 – 2.51 (m, 1H), 2.45 (s, 3H), 2.43 – 2.34 (m, 2H), 2.32 – 2.24 (m, 1H), 2.19 (s, 3H), 1.97 – 1.81 (m, 2H), 1.56 – 1.43 (m, 1H), 0.88 – 0.75 (m, 4H). Example 510: N-[5-[5-[(3S)-2,2-dimethylazetidin-3-yl]oxy-2-methyl-4-pyrid yl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 1-benzhydryl-2,2-dimethylazetidin-3-yl)oxy)-2-methylpyridin- 4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. The title compound was prepared using a similar method described in Example 136 and using (S)-1-benzhydryl-2,2- dimethylazetidin-3-ol instead of endo-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane hydrochloride. Step B: N-[5-[5-[(3S)-2,2-dimethylazetidin-3-yl]oxy-2-methyl-4-pyrid yl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. To a mixture of 10% Pd/C (550 mg, dry) and MeOH (5 mL) was added a mixture of ammonium formate (746 mg, 11.8 mmol) and (S)-N-(5-(5-((1- 486

benzhydryl-2,2-dimethylazetidin-3-yl)oxy)-2-methylpyridin -4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide (550 mg, 0.986 mmol) in MeOH (5 mL) and THF (10 mL). The reaction was stirred at 50 °C for 16 h. The mixture was filtered and the organic phase concentrated to dryness under reduced pressure to give the crude product. The residue was purified by preparative HPLC using a Boston Prime C18150 x 30 mm x 5µm column (eluent: 25% to 55% (v/v) CH ₃ CN and H ₂ O with 0.05% NH ₃ ). The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound as a white solid. MS (ESI): mass calcd. for C22H25N5O2, 391.2; m/z found, 392.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.11 (s, 1H), 8.59 (d, J = 7.2 Hz, 1H), 8.04 (s, 1H), 7.85 (s, 1H), 7.38 (s, 1H), 7.07 (dd, J = 2.0, 7.2 Hz, 1H), 6.89 (s, 1H), 4.74 (t, J = 6.4 Hz, 1H), 3.71 - 3.63 (m, 1H), 3.31 - 3.25 (m, 1H), 2.46 (s, 3H), 1.99 - 1.88 (m, 1H), 1.28 (s, 3H), 1.21 (s, 3H), 0.88 - 0.77 (m, 4H) Example 511: N-(1-isopropylpyrazol-4-yl)-5-[2-methyl-5-(1-methylazetidin- 3-yl)oxy-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine. was prepared using methods analogous to those described in Example 162. MS (ESI): mass calcd. for C23H27N7O, 417.2; m/z found, 418.3 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.25 (d, J = 7.2 Hz, 1H), 7.98 (s, 1H), 7.62 (s, 1H), 7.50 (s, 1H), 7.46 (d, J = 1.2 Hz, 1H), 7.17 (s, 1H), 6.80 (dd, J = 2.0, 7.2 Hz, 1H), 5.88 (s, 1H), 5.81 (s, 1H), 4.84 - 4.76 (m,1H), 4.53 - 4.43 (m, 1H), 3.84 - 3.77 (m, 2H), 3.15 - 3.08 (m, 2H), 2.54 (s, 3H), 2.39 (s, 3H), 1.54 (d, J = 6.4 Hz, 6H). Example 512: N-[5-[2-methyl-5-[[(2S)-1-methylazetidin-2-yl]methoxy]-4-pyr idyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 487

p as prepared using methods analogous to those described in Example 136. MS (ESI): mass calcd. for C ₂₂ H ₂₅ N ₅ O ₂ , 391.2; m/z found, 392.2 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl3) δ 9.84 - 8.82 (m, 1H), 8.61 - 7.79 (m, 2H), 7.47 (d, J = 22.7 Hz, 1H), 7.24 - 6.34 (m, 3H), 4.40 - 3.57 (m, 2H), 3.18 (t, J = 30.9 Hz, 2H), 2.84 - 1.57 (m, 9H), 1.53 - 0.18 (m, 5H). Example 513: 5-[2-methyl-5-[[(2S,5R)-5-methylmorpholin-2-yl]methoxy]-4-py ridyl]-N- pyridazin-3-yl-pyrazolo[1,5-a]pyridin-2-amine. as prepared using methods analogous to those described in Example 116 Steps A and B. MS (ESI): mass calcd. for C ₂₃ H ₂₅ N ₇ O ₂ , 431.2; m/z found, 432.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.60 - 8.48 (m, 2H), 8.48 - 8.36 (m, 2H), 7.75 - 7.62 (m, 2H), 6.97 (dd, J = 7.2, 1.9 Hz, 1H), 6.67 (s, 1H), 5.32 (s, 3H), 4.25 (s, 2H), 4.08 (d, J = 10.6 Hz, 1H), 3.77 (d, J = 12.3 Hz, 1H), 3.52 (s, 2H), 3.32 - 3.22 (m, 1H), 3.15 (d, J = 12.6 Hz, 1H), 2.65 (s, 3H), 1.38 (d, J = 6.9 Hz, 3H). Example 514: 5-[2-methyl-5-[[(1S,5R)-8-methyl-8-azabicyclo[3.2.1]octan-3- yl]oxy]-4-pyridyl]- N-pyridazin-3-yl-pyrazolo[1,5-a]pyridin-2-amine. 488

was prepared using methods analogous to those described in Example 116. MS (ESI): mass calcd. for C ₂₅ H ₂₇ N ₇ O, 441.2; m/z found, 442.2 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl3) δ 8.71 (q, J = 6.0, 5.2 Hz, 1H), 8.43 (q, J = 7.2, 6.6 Hz, 1H), 8.18 (t, J = 6.8 Hz, 1H), 8.07 - 7.99 (m, 1H), 7.59 (t, J = 6.8 Hz, 1H), 7.55 - 7.47 (m, 1H), 7.25 (d, J = 13.6 Hz, 0H), 6.88 (q, J = 7.3, 6.3 Hz, 1H), 6.78 (t, J = 6.8 Hz, 1H), 3.76 (s, 2H), 3.53 - 3.48 (m, 3H), 2.73 - 2.66 (m, 5H), 2.58 (t, J = 6.9 Hz, 3H), 2.22 (dd, J = 16.3, 5.3 Hz, 2H), 2.04 (t, J = 12.5 Hz, 4H). Example 515: 5-[2-methyl-5-[[(2S)-4-methylmorpholin-2-yl]methoxy]-4-pyrid yl]-N-pyrazin-2- yl-pyrazolo[1,5-a]pyridin-2-amine. was prepared using methods analogous to those described in Example 116. MS (ESI): mass calcd. for C ₂₃ H ₂₅ N ₇ O ₂ , 431.2; m/z found, 432.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.26 (s, 1H), 8.65 (d, J = 1.5 Hz, 1H), 8.60 (d, J = 7.1 Hz, 1H), 8.34 (s, 1H), 8.21 (dd, J = 2.7, 1.5 Hz, 1H), 8.01 (d, J = 2.7 Hz, 1H), 7.87 (dd, J = 2.0, 0.9 Hz, 1H), 7.36 (s, 1H), 7.04 (dd, J = 7.2, 2.0 Hz, 1H), 6.91 (d, J = 0.8 Hz, 1H), 4.19 – 4.09 (m, 2H), 3.83 – 3.71 (m, 2H), 3.56 – 3.46 (m, 1H), 2.76 – 2.68 (m, 1H), 2.60 – 2.54 (m, 1H), 2.47 (s, 3H), 2.15 (s, 3H), 2.01 – 1.92 (m, 1H), 1.92 – 1.85 (m, 1H). 489

Example 516: (*R)-5-[5-[(6,6-dimethylmorpholin-2-yl)methoxy]-2-methyl-4-p yridyl]-N- pyridazin-3-yl-pyrazolo[1,5-a]pyridin-2-amine. was prepared using methods analogous to those described in Example 116 Steps A and B. MS (ESI): mass calcd. for C24H27N7O2, 445.2; m/z found, 446.20 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl ₃ ) δ 9.80 - 9.76 (m, 1H), 8.80 - 8.75 (m, 1H), 8.41 - 8.36 (m, 1H), 8.27 - 8.18 (m, 2H), 7.72 - 7.67 (m, 1H), 7.42 (dd, J = 9.1, 4.5 Hz, 1H), 7.19 (s, 1H), 7.00 (dd, J = 7.2, 1.9 Hz, 1H), 6.73 (s, 1H), 4.10 - 4.00 (m, 2H), 4.03 - 3.94 (m, 1H), 3.82 - 3.76 (m, 1H), 3.57 (dd, J = 11.3, 3.6 Hz, 1H), 3.47 (dd, J = 11.3, 6.0 Hz, 1H), 2.99 - 2.92 (m, 1H), 2.87 - 2.82 (m, 1H), 2.70 - 2.49 (m, 3H), 1.32 (d, J = 3.4 Hz, 3H), 1.19 (d, J = 17.3 Hz, 3H). Example 517: N-[5-[5-(3-amino-3-methyl-cyclobutoxy)-2-methyl-4-pyridyl]py razolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. as prepared using methods analogous to those described in Example 136. MS (ESI): mass calcd. for C22H25N5O2, 391.2; m/z found, 392.15 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 9.21 (s, 1H), 8.29 (d, J = 7.2 Hz, 1H), 8.10 (s, 1H), 7.67 (d, J = 1.9 Hz, 1H), 7.17 (s, 1H), 7.04 (s, 1H), 6.97 (dd, J = 7.2, 2.0 Hz, 1H), 4.51 (p, J = 6.8 Hz, 1H), 2.66 - 490

2.58 (m, 2H), 2.55 (s, 3H), 2.12 - 2.00 (m, 2H), 1.65 - 1.56 (m, 1H), 1.31 (s, 3H), 1.20 - 1.11 (m, 2H), 0.89 (dq, J = 7.4, 4.0 Hz, 2H). Example 518: 5-[5-[[(2S)-6,6-dimethylmorpholin-2-yl]methoxy]-2-methyl-4-p yridyl]-N- pyridazin-3-yl-pyrazolo[1,5-a]pyridin-2-amine. as prepared using methods analogous to those described in Example 116 Steps A and B. MS (ESI): mass calcd. for C24H27N7O2, 445.2; m/z found, 446.20 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl ₃ ) δ 10.55 (s, 1H), 8.66 (dd, J = 4.5, 1.4 Hz, 1H), 8.30 (d, J = 7.2 Hz, 1H), 8.21 - 8.09 (m, 3H), 7.60 (d, J = 1.9 Hz, 1H), 7.31 (dd, J = 9.1, 4.5 Hz, 1H), 7.08 (s, 1H), 6.89 (dd, J = 7.2, 2.0 Hz, 1H), 6.72 (s, 1H), 4.00 - 3.90 (m, 2H), 3.88 (tt, J = 7.2, 4.3 Hz, 1H), 2.85 (dd, J = 12.1, 2.3 Hz, 1H), 2.56 (d, J = 12.4 Hz, 1H), 2.55 - 2.46 (m, 1H), 1.90 (s, 2H), 1.22 (s, 3H), 1.10 (s, 5H). Example 519: (*S)-N-[5-[5-[(3-fluoro-1-methyl-pyrrolidin-3-yl)methoxy]-2- methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. as prepared using methods analogous to those described in Example 136. MS (ESI): mass calcd. for C23H26FN5O2, 423.2; m/z found, 424.3 [M+H] ⁺ . ¹ H 491

NMR (400 MHz, CDCl3) δ 8.42 (br s, 1H), 8.28 (d, J = 7.2 Hz, 1H), 8.24 (s, 1H), 7.68 (d, J = 1.2 Hz, 1H), 7.20 (s, 1H), 7.04 - 6.97 (m, 2H), 4.26 - 4.13 (m, 2H), 2.83 - 2.70 (m, 3H), 2.56 (s, 3H), 2.54 - 2.47 (m, 1H), 2.34 (s, 3H), 2.21 - 1.98 (m, 2H), 1.63 - 1.54 (m, 1H), 1.18 - 1.12 (m, 2H), 0.95 - 0.88 (m, 2H). ¹⁹ F NMR (376 MHz, CDCl ₃ ) δ -145.62 (s, 1F) Example 520: 5-[5-(3-aminocyclobutoxy)-2-methyl-4-pyridyl]-N-pyridazin-3- yl-pyrazolo[1,5- a]pyridin-2-amine. was prepared using methods analogous to those described in Example 116 Steps A and B. MS (ESI): mass calcd. for C21H21N7O, 387.2; m/z found, 388.20 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl ₃ ) δ 10.53 (s, 1H), 8.67 (dd, J = 4.4, 1.4 Hz, 1H), 8.32 (d, J = 7.2 Hz, 1H), 8.11 (dt, J = 9.2, 1.8 Hz, 1H), 7.95 (s, 1H), 7.55 (t, J = 2.4 Hz, 1H), 7.30 (dd, J = 9.1, 4.5 Hz, 1H), 7.08 (d, J = 2.0 Hz, 1H), 6.83 (dt, J = 7.3, 1.7 Hz, 1H), 6.73 (s, 1H), 2.83 - 2.75 (m, 2H), 2.45 (s, 3H), 2.36 (ddd, J = 12.3, 7.5, 3.8 Hz, 2H), 2.15 - 2.06 (m, 2H), 1.83 - 1.72 (m, 2H). Example 521: N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[[(2S)-1-methyl azetidin-2- yl]methoxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. 2

The title compound was prepared using a similar method described in Example 198. MS (ESI): mass calcd. for C24H27N7O, 429.2; m/z found, 430.0 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 10.18 (s, 1H), 8.59 (d, J = 7.2 Hz, 1H), 8.33 (s, 1H), 7.89 (s, 1H), 7.36 (s, 1H), 7.05 (dd, J = 7.3, 1.9 Hz, 1H), 7.01 (br s, 1H), 6.84 (br s, 1H), 4.14 – 4.06 (m, 2H), 3.30 – 3.24 (m, 2H), 2.77 – 2.68 (m, 1H), 2.46 (s, 3H), 2.45 (s, 3H), 2.30 (s, 3H), 2.17 (s, 3H), 2.00 – 1.85 (m, 2H). Example 522: (*R)-N-[5-[5-[(3-hydroxy-1-methyl-pyrrolidin-3-yl)methoxy]-2 -methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. as prepared using methods analogous to those described in Example 136. MS (ESI): mass calcd. for C23H27N5O3, 421.2; m/z found, 422.3 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.45 (s, 1H), 8.27 (s, 1H), 8.23 (d, J = 7.2 Hz, 1H), 7.64 (d, J = 0.8 Hz, 1H), 7.17 (s, 1H), 6.95 (s, 1H), 6.91 (dd, J = 2.0, 7.2 Hz, 1H), 4.10 (s, 2H), 3.20 (br. s., 1H), 2.86 - 2.78 (m, 1H), 2.64 (s, 2H), 2.56 (s, 3H), 2.50 - 2.41 (m, 1H), 2.34 (s, 3H), 2.10 - 2.00 (m, 1H), 1.97 - 1.88 (m, 1H), 1.55 - 1.45 (m, 1H), 1.14 -1.06 (m, 2H), 0.88 - 0.81 (m, 2H) Example 523: 5-[2-methyl-5-[[(1S,4S,7R)-2-oxa-5-azabicyclo[2.2.1]heptan-7 -yl]oxy]-4- pyridyl]-N-(6-methylpyridazin-3-yl)pyrazolo[1,5-a]pyridin-2- amine. 493

as prepared using methods analogous to those described in Example 116 Steps A and B. MS (ESI): mass calcd. for C23H23N7O2, 429.2; m/z found, 430.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CD ₃ OD) δ 8.44 – 8.39 (m, 2H), 7.75 – 7.72 (m, 1H), 7.68 (d, J = 9.1 Hz, 1H), 7.43 (d, J = 9.2 Hz, 1H), 7.41 (s, 1H), 7.00 (dd, J = 7.2, 2.0 Hz, 1H), 6.88 – 6.86 (m, 1H), 4.89 (d, J = 2.4 Hz, 1H), 4.37 (s, 1H), 4.05 (dd, J = 7.9, 2.1 Hz, 1H), 3.90 (d, J = 8.0 Hz, 1H), 3.61 (t, J = 2.2 Hz, 1H), 3.17 (dd, J = 11.2, 1.7 Hz, 1H), 3.00 (d, J = 11.3, 0.8 Hz, 1H), 2.56 (d, J = 5.1 Hz, 6H). Example 524: N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[[(1S,4S,7R)-2- oxa-5- azabicyclo[2.2.1]heptan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]p yridin-2-amine. s prepared using a similar method described in Example 198. MS (ESI): mass calcd. for C24H25N7O2, 443.2; m/z found, 444.1 [M+H] ⁺ . ¹ H NMR (500 MHz, CD ₃ OD) δ 8.41 (d, J = 7.2 Hz, 1H), 8.39 (s, 1H), 7.74 - 7.69 (m, 1H), 7.37 (s, 1H), 7.01 (s, 1H), 6.99 (dd, J = 7.2, 2.0 Hz, 1H), 6.84 (s, 1H), 4.88 (d, J = 2.3 Hz, 1H), 4.37 (s, 1H), 4.04 (dd, J = 7.9, 2.1 Hz, 1H), 3.90 (d, J = 7.9 Hz, 1H), 3.60 (t, J = 2.2 Hz, 1H), 3.16 (dd, J = 11.2, 1.7 Hz, 1H), 3.00 (d, J = 11.2 Hz, 1H), 2.54 (s, 3H), 2.52 (s, 3H), 2.37 (s, 3H). 494

Example 525: N-(6-cyclopropylpyridazin-3-yl)-5-[2-methyl-5-[[(1S,4S,7R)-2 -oxa-5- azabicyclo[2.2.1]heptan-7-yl]oxy]-4-pyridyl]pyrazolo[1,5-a]p yridin-2-amine. s prepared using methods analogous to those described in Example 116 Steps A and B. MS (ESI): mass calcd. for C25H25N7O2, 455.2; m/z found, 456.2 [M+H] ⁺ . ¹ H NMR (500 MHz, CD3OD) δ 8.42 – 8.38 (m, 2H), 7.74 – 7.71 (m, 1H), 7.64 (d, J = 9.3 Hz, 1H), 7.40 (s, 1H), 7.28 (d, J = 9.3 Hz, 1H), 6.99 (dd, J = 7.2, 2.0 Hz, 1H), 6.86 – 6.82 (m, 1H), 4.87 (d, J = 2.3 Hz, 1H), 4.35 (s, 1H), 4.05 (dd, J = 7.8, 2.1 Hz, 1H), 3.88 (d, J = 7.8 Hz, 1H), 3.55 (t, J = 2.2 Hz, 1H), 3.14 (dd, J = 11.1, 1.7 Hz, 1H), 2.97 (dd, J = 11.1, 0.7 Hz, 1H), 2.55 (s, 3H), 2.21 – 2.12 (m, 1H), 1.11 – 1.04 (m, 2H), 1.00 – 0.94 (m, 2H). Example 526: N-[5-[5-[[(2S)-azetidin-2-yl]methoxy]-2-methyl-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. as prepared using a similar tosic acid displacement method described in Example 188, followed by a similar Boc-deprotection step described in Example 9, Step B. MS (ESI): mass calcd. for C ₂₁ H ₂₃ N ₅ O ₂ , 377.2; m/z found, 378.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.48 - 8.52 (m, 1H), 8.28 - 8.23 (m, 2H), 7.71 (d, J = 0.8 Hz, 1H), 7.17 (s, 1H), 6.99 (s, 1H), 6.97 (dd, J = 2.0, 7.2 Hz, 1H), 4.27 - 4.19 (m, 1H), 4.12 - 4.08 (m, 2H), 3.71 - 3.62 495

(m, 1H), 3.44 - 3.33 (m, 1H), 2.55 (s, 3H), 2.38 - 2.17 (m, 2H), 1.63 - 1.51 (m, 1H), 1.22 - 1.07 (m, 2H), 0.99 - 0.83 (m, 2H) Example 527: N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[[(2R)-1-methyl azetidin-2- yl]methoxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. s prepared using a similar method described in Example 198. MS (ESI): mass calcd. for C ₂₄ H ₂₇ N ₇ O, 429.2; m/z found, 430.3 [M+H] ⁺ . ¹ H NMR (500 MHz, CD ₃ OD) δ 8.37 – 8.32 (m, 1H), 8.14 (s, 1H), 7.71 – 7.66 (m, 1H), 7.27 (s, 1H), 6.98 – 6.88 (m, 2H), 6.76 (s, 1H), 4.11 (dd, J = 9.8, 3.5 Hz, 1H), 4.01 (dd, J = 9.8, 7.7 Hz, 1H), 3.49 – 3.39 (m, 1H), 3.34 – 3.25 (m, 1H), 2.88 – 2.77 (m, 1H), 2.43 (s, 3H), 2.43 (s, 3H), 2.28 (d, J = 0.6 Hz, 3H), 2.16 (s, 3H), 2.05 – 1.89 (m, 2H). Example 528: 5-[2-methyl-5-[[(1S,4S,7R)-2-oxa-5-azabicyclo[2.2.1]heptan-7 -yl]oxy]-4- pyridyl]-N-(5-methylpyrazin-2-yl)pyrazolo[1,5-a]pyridin-2-am ine. was prepared using methods analogous to those described in Example 116 Steps A and B. MS (ESI): mass calcd. for C ₂₃ H ₂₃ N ₇ O ₂ , 429.2; m/z found, 430.2 496

[M+H] ⁺ . ¹ H NMR (600 MHz, CD3OD) δ 8.53 (d, J = 1.5 Hz, 1H), 8.42 – 8.39 (m, 1H), 8.39 (s, 1H), 8.13 – 8.11 (m, 1H), 7.73 – 7.69 (m, 1H), 7.39 (s, 1H), 6.97 (dd, J = 7.2, 2.0 Hz, 1H), 6.79 (d, 1H), 4.88 (d, J = 2.3 Hz, 1H), 4.37 (s, 1H), 4.05 (dd, J = 8.0, 2.1 Hz, 1H), 3.90 (d, J = 7.8 Hz, 1H), 3.60 (t, J = 2.2 Hz, 1H), 3.16 (dd, J = 11.2, 1.7 Hz, 1H), 3.00 (d, J = 11.3, 0.8 Hz, 1H), 2.54 (s, 3H), 2.43 (s, 3H). Example 529: N-[5-[5-[[(2R)-1-(2-fluoroethyl)azetidin-2-yl]methoxy]-2-met hyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. as prepared using methods analogous to those described in Example 457, Step B. MS (ESI): mass calcd. for C23H26FN5O2, 423.2; m/z found, 424.3 [M+H] ⁺ . 1H NMR (400 MHz, CDCl3) δ 8.49 (s, 1H), 8.27 (d, J = 7.2 Hz, 1H), 8.25 (s, 1H), 7.69 (s, 1H), 7.16 (s, 1H), 6.99 (s, 1H), 6.95 (dd, J = 2.0, 7.2 Hz, 1H), 4.48 - 4.21 (m, 2H), 4.21 - 4.06 (m, 2H), 3.65 - 3.47 (m, 2H), 3.08 - 2.94 (m, 1H), 2.92 - 2.59 (m, 2H), 2.55 (s, 3H), 2.20 - 2.06 (m, 2H), 1.64 - 1.53 (m, 1H), 1.23 - 1.10 (m, 2H), 1.00 - 0.86 (m, 2H). ¹⁹ F NMR (376 MHz, CDCl3) δ -221.69 (s, 1F). Example 530: 6-[[5-[5-[[(1S,5R)-9-ethyl-3-oxa-9-azabicyclo[3.3.1]nonan-7- yl]oxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-N-methyl-pyridine -3-carboxamide. 497

prepared using methods analogous to those described in Example 116, using acetaldehyde in place of H(CHO)n in step C. MS (ESI): mass calcd. for C ₂₉ H ₃₃ N ₇ O ₃ , 527.3; m/z found, 528.4 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.67 (s, 1H), 8.33 (d, J = 6.8 Hz, 1H), 8.17 (s, 1H), 8.07 - 7.99 (m, 2H), 7.56 (s, 1H), 7.50 (d, J = 8.8 Hz, 1H), 7.23 (s, 1H), 7.20 (d, J = 7.2 Hz, 1H), 6.54 (s, 1H), 6.12 - 6.03 (m, 1H), 4.67 - 4.58 (m, 1H), 3.97 - 3.89 (m, 2H), 3.70 - 3.62 (m, 2H), 3.06 - 2.99 (m, 3H), 2.82 - 2.78 (m, 2H), 2.69 (q, J = 7.2 Hz, 2H), 2.55 (s, 3H), 2.43 - 2.32 (m, 2H), 1.84 - 1.76 (m, 2H), 1.08 (t, J = 7.2 Hz, 3H) Example 531: 6-[[5-[5-[[(1S,5R)-9-isopropyl-3-oxa-9-azabicyclo[3.3.1]nona n-7-yl]oxy]-2- methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-N-methyl -pyridine-3-carboxamide. prepared using methods analogous to those described in Example 116, using acetone in place of H(CHO) _n in step C. MS (ESI): mass calcd. for C ₃₀ H ₃₅ N ₇ O ₃ , 541.3; m/z found, 542.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.66 (d, J = 1.6 Hz, 1H), 8.32 (d, J = 7.2 Hz, 1H), 8.15 (s, 1H), 8.09 - 7.98 (m, 2H), 7.54 - 7.43 (m, 2H), 7.23 (s, 1H), 7.20 (d, J = 7.6 Hz, 1H), 6.54 (s, 1H), 6.12 - 5.99 (m, 1H), 4.70 - 4.55 (m, 1H), 3.97 - 3.84 498

(m, 2H), 3.80 - 3.69 (m, 2H), 3.12 - 2.89 (m, 6H), 2.55 (s, 3H), 2.41 - 2.18 (m, 2H), 1.91 - 1.72 (m, 2H), 1.17 - 0.97 (m, 6H) Example 532: 6-[[5-[5-[[(1S,5R)-9-(2-hydroxy-2-methyl-propyl)-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl]oxy]-2-methyl-4-pyridyl]pyrazolo [1,5-a]pyridin-2-yl]amino]-N- methyl-pyridine-3-carboxamide. -((5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy )- 2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-N-me thylnicotinamide (Example 173, 170 mg, 0.34 mmol), 2,2-dimethyloxirane (491 mg, 6.81 mmol), potassium carbonate (188 mg, 1.36 mmol), and DMF (3 mL) was stirred at 40 ºC for 16 hr. The reaction mixture was purified by preparative HPLC using a Phenomenex Gemini-NX 150 x 30mm x 5um column (eluent: 27% to 57% (v/v) CH ₃ CN and H ₂ O with 0.04% NH ₃ ) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound as a light yellow solid (70 mg, 35%). MS (ESI): mass calcd. for C ₃₁ H ₃₇ N ₇ O ₄ , 571.3; m/z found, 572.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.68 (d, J = 2.0 Hz, 1H), 8.33 (d, J = 7.2 Hz, 1H), 8.19 (s, 1H), 8.04 (dd, J = 2.4, 8.8 Hz, 1H), 7.97 (d, J = 1.2 Hz, 1H), 7.65 (s, 1H), 7.48 (d, J = 8.8 Hz, 1H), 7.22 (s, 1H), 7.14 (dd, J = 2.0, 7.2 Hz, 1H), 6.56 (s, 1H), 6.11 (q, J = 4.8 Hz, 1H), , 4.69 - 4.53 (m, 1H), 3.99 - 3.86 (m, 2H), 3.72 - 3.63 (m, 2H), 3.03 (d, J = 4.8 Hz, 3H), 2.92 (s, 1H), 2.79 - 2.72 (m, 2H), 2.56 (s, 3H), 2.52 (s, 2H), 2.45 - 2.33 (m, 2H), 1.96 - 1.81 (m, 2H), 1.14 (s, 6H) 499

Example 533: (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-(5,5-dimethyltetrah ydrofuran-3- yl)oxy-2-methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. s prepared using a similar method described in Example 198. Purified by SFC over DAICEL CHIRALPAK AD 250 mm x 30 mm x 10 µm (eluent: 45% to 45% (v/v) EtOH with 0.1% NH3•H2O in supercritical CO2). MS (ESI): mass calcd. for C25H28N6O2, 444.2; m/z found, 445.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.20 (s, 1H), 8.58 (d, J = 7.2 Hz, 1H), 8.27 (s, 1H), 7.81 (d, J = 0.8 Hz, 1H), 7.36 (s, 1H), 7.05 - 6.98 (m, 2H), 6.86 (s, 1H), 5.22 - 5.16 (m, 1H), 4.05 (dd, J = 4.8, 10.4 Hz, 1H), 3.85 (d, J = 10.8 Hz, 1H), 2.47 (s, 3H), 2.46 (s, 3H), 2.30 (s, 3H), 2.15 (dd, J = 6.8, 13.6 Hz, 1H), 1.89 (d, J = 14.0 Hz, 1H), 1.19 (s, 3H), 1.18 (s, 3H) Example 534: (3*R, 4*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(4- methyltetrahydrofuran-3-yl)oxy-4-pyridyl]pyrazolo[1,5-a]pyri din-2-amine. s prepared using a similar method described in Example 203. Purified by SFC over AD 250 mm x 30 mm, 10 µm (eluent: 35% to 35% (v/v) supercritical CO2 in EtOH and H ₂ O with 0.1% NH ₃ ). MS (ESI): mass calcd. for C ₂₄ H ₂₆ N ₆ O ₂ , 430.2; m/z found, 431.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.37 (d, J = 7.2 Hz, 1H), 8.15 (s, 1H), 7.60 (d, J = 0.8 Hz, 1H), 7.52 (s, 1H), 7.19 (s, 1H), 7.09 (s, 1H), 6.93 (dd, J = 2.0, 7.6 Hz, 1H), 6.57 (s, 1H), 500

4.87 - 4.82 (m, 1H), 4.09 (dd, J = 4.0, 10.4 Hz, 1H), 4.04 - 3.99 (m, 1H), 3.96 (dd, J = 1.2, 10.4 Hz, 1H), 3.51 (dd, J = 8.4, 10.4 Hz, 1H), 2.61 (s, 3H), 2.56 (s, 3H), 2.53 - 2.47 (m, 1H), 2.45 (s, 3H), 1.04 (d, J = 6.8 Hz, 3H). Example 535: (*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[(3-methyl tetrahydrofuran-3- yl)methoxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. s prepared using a similar method described in Example 203. Purified by SFC over DAICEL CHIRALCEL OJ-H 250 mm x 30 mm, 5 µm (eluent: 35% to 35% (v/v) supercritical 0.1% NH3-H2O EtOH). MS (ESI): mass calcd. for C25H28N6O2, 444.2; m/z found, 445.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.41 (d, J = 7.2 Hz, 1H), 8.25 (s, 1H), 7.82 (br. s., 1H), 7.61 (s, 1H), 7.18 (s, 1H), 7.10 (s, 1H), 6.93 (dd, J = 1.6, 7.2 Hz, 1H), 6.57 (s, 1H), 3.92 (s, 2H), 3.89 - 3.82 (m, 2H), 3.74 (d, J = 8.8 Hz, 1H), 3.40 (d, J = 8.4 Hz, 1H), 2.61 (s, 3H), 2.56 (s, 3H), 2.45 (s, 3H), 1.92 - 1.85 (m, 1H), 1.71 - 1.62 (m, 1H), 1.18 (s, 3H). Example 536: (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[(3-methyl tetrahydrofuran-3- yl)methoxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. s prepared using a similar method described in Example 203. Purified by SFC over DAICEL CHIRALCEL OJ-H 250 mm x 30 mm, 5 µm (eluent: 35% to 501

35% (v/v) supercritical 0.1% NH3-H2O EtOH). MS (ESI): mass calcd. for C25H28N6O2, 444.2; m/z found, 445.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.21 (s, 1H), 8.61 (d, J = 7.6 Hz, 1H), 8.34 (s, 1H), 7.79 (d, J = 0.8 Hz, 1H), 7.36 (s, 1H), 7.04 (br. s., 1H), 7.00 (dd, J = 1.6, 6.8 Hz, 1H), 6.84 (br. s., 1H), 3.98 (s, 2H), 3.77 - 3.70 (m, 2H), 3.62 (d, J = 8.4 Hz, 1H), 3.31 (d, J = 8.4 Hz, 1H), 2.47 (s, 3H), 2.46 (s, 3H), 2.31 (s, 3H), 1.91 - 1.82 (m, 1H), 1.63 - 1.56 (m, 1H), 1.10 (s, 3H) Example 537: 2-methyl-1-[[6-methyl-4-[2-[[6-methyl-2-(trifluoromethyl)pyr imidin-4- yl]amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]propan-2 -ol. epared using a similar method described in Example 200. MS (ESI): mass calcd. for C23H23F3N6O2, 472.2; m/z found, 473.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.92 (s, 1H), 8.68 - 8.61 (m, 1H), 8.33 (s, 1H), 7.99 - 7.89 (m, 1H), 7.39 (s, 2H), 7.15 (dd, J = 7.2, 2.0 Hz, 1H), 6.84 (s, 1H), 4.63 (s, 1H), 3.88 (s, 2H), 2.47 (s, 3H), 2.46 (s, 3H), 1.16 (s, 6H). Example 538: (1r,3r)-3-(((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazol o[1,5-a]pyridin-5- yl)-6-methylpyridin-3-yl)oxy)methyl)cyclobutan-1-ol. 2

The title compound was prepared using a similar method described in Example 203. MS (ESI): mass calcd. for C24H26N6O2, 430.2; m/z found, 431.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.39 (d, J = 7.2 Hz, 1H), 8.25 (s, 1H), 7.73 (s, 1H), 7.65 - 7.57 (m, 1H), 7.18 (s, 1H), 7.08 (s, 1H), 6.94 (dd, J = 1.6, 7.2 Hz, 1H), 6.55 (s, 1H), 4.44 - 4.32 (m, 1H), 4.06 (d, J = 6.4 Hz, 2H), 2.72 - 2.62 (m, 1H), 2.59 (s, 3H), 2.56 (s, 3H), 2.44 (s, 3H), 2.30 - 2.18 (m, 2H), 2.17 - 2.06 (m, 2H). Example 539: (*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(5,5-dimethyltetra hydrofuran-3- yl)methoxy]-2-methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amin e. s prepared using a similar method described in Example 203. Purified by SFC with a DAICEL CHIRALPAK IG (250 mm x 30 mm,10 um) column (eluent: 55% to 55% (v/v) EtOH with 0.1% NH3-H2O in supercritical CO2). MS (ESI): mass calcd. for C ₂₆ H ₃₀ N ₆ O ₂ , 458.2; m/z found, 459.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.39 (d, J = 6.8 Hz, 1H), 8.25 (s, 1H), 7.63 (s, 1H), 7.61 (d, J = 1.2 Hz, 1H), 7.18 (s, 1H), 7.08 (s, 1H), 6.92 (dd, J = 1.6, 7.2 Hz, 1H), 6.58 (s, 1H), 4.11 - 4.04 (m, 1H), 4.03 - 3.94 (m, 2H), 3.73 - 3.65 (m, 1H), 2.88 - 2.74 (m, 1H), 2.61 (s, 3H), 2.56 (s, 3H), 2.45 (s, 3H), 1.96 - 1.89 (m, 1H), 1.54 - 1.47 (m, 1H), 1.28 (s, 3H), 1.21 (s, 3H). Example 540: (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[(5,5-dimethyltetra hydrofuran-3- yl)methoxy]-2-methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amin e. 503

s prepared using a similar method described in Example 203. Purified by SFC with a DAICEL CHIRALPAK IG (250 mm x 30 mm,10 um) column (eluent: 55% to 55% (v/v) EtOH with 0.1% NH ₃ -H ₂ O in supercritical CO ₂ ). MS (ESI): mass calcd. for C ₂₆ H ₃₀ N ₆ O ₂ , 458.2; m/z found, 459.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.38 (d, J = 7.6 Hz, 1H), 8.25 (s, 1H), 7.61 (d, J = 0.8 Hz, 1H), 7.59 (s, 1H), 7.18 (s, 1H), 7.08 (s, 1H), 6.92 (dd, J = 1.6, 6.8 Hz, 1H), 6.58 (s, 1H), 4.11 - 4.05 (m, 1H), 4.03 - 3.94 (m, 2H), 3.72 - 3.65 (m, 1H), 2.87 - 2.75 (m, 1H), 2.61 (s, 3H), 2.56 (s, 3H), 2.45 (s, 3H), 1.96 - 1.89 (m, 1H), 1.55 - 1.47 (m, 1H), 1.28 (s, 3H), 1.21 (s, 3H). Example 541: 2-methyl-1-[[6-methyl-4-[2-[(5-methylpyrazin-2-yl)amino]pyra zolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]propan-2-ol. was prepared using a similar method described in Example 200. MS (ESI): mass calcd. for C ₂₂ H ₂₄ N ₆ O ₂ , 404.2; m/z found, 405.20 [M+H] ⁺ . ¹ H NMR (500 MHz, Chloroform-d) d 8.61 (d, J = 8.3 Hz, 1H), 8.40 (d, J = 1.6 Hz, 1H), 8.24 - 8.19 (m, 1H), 8.14 (s, 1H), 7.94 (s, 1H), 7.46 - 7.42 (m, 1H), 7.04 (s, 1H), 6.78 (dd, J = 7.1, 1.9 Hz, 1H), 6.56 (s, 1H), 3.84 (s, 2H), 3.39 (d, J = 0.7 Hz, 1H), 2.44 (s, 3H), 2.33 (s, 3H), 1.23 (s, 6H). 504

Example 542: (rac-)-4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[ 1,5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxymethyl]-1-methyl-pyrrolidin-2-one. s prepared using a similar method described in Example 203. MS (ESI): mass calcd. for C ₂₅ H ₂₇ N ₇ O ₂ , 457.2; m/z found, 458.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.20 (s, 1H), 8.57 (d, J = 7.1 Hz, 1H), 8.34 (s, 1H), 7.83 – 7.72 (m, 1H), 7.37 (s, 1H), 7.06 – 6.95 (m, 2H), 6.88 (s, 1H), 4.12 (d, J = 6.3 Hz, 2H), 3.45 (dd, J = 9.8, 8.5 Hz, 1H), 3.19 (dd, J = 9.8, 5.6 Hz, 1H), 2.82 – 2.71 (m, 1H), 2.66 (s, 3H), 2.46 (d, J = 3.1 Hz, 6H), 2.43 – 2.34 (m, 1H), 2.30 (s, 3H), 2.14 (dd, J = 16.7, 6.6 Hz, 1H). Example 543: (*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-(6,9-dioxaspiro[4.4 ]nonan-8- ylmethoxy)-2-methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine . s prepared using a similar method described in Example 203. Purified by SFC with a DAICEL CHIRALCEL OJ-H (250 mm x 30 mm,5 um) column (eluent: 45% to 45% (v/v) EtOH with 0.1% NH ₃ -H ₂ O in supercritical CO ₂ ). MS (ESI): mass calcd. for C27H30N6O3, 486.2; m/z found, 487.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.39 (d, J = 7.2 Hz, 1H), 8.29 (s, 1H), 7.70 - 7.62 (m, 2H), 7.19 (s, 1H), 7.07 (s, 1H), 6.95 (dd, J = 2.0, 7.6 Hz, 505

1H), 6.59 (s, 1H), 4.43 - 4.29 (m, 1H), 4.20 - 4.06 (m, 2H), 4.04 - 3.94 (m, 1H), 3.85 - 3.76 (m, 1H), 2.61 (s, 3H), 2.57 (s, 3H), 2.45 (s, 3H), 1.81 - 1.72 (m, 4H), 1.70 - 1.61 (m, 4H). Example 544: (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-(6,9-dioxaspiro[4.4 ]nonan-8- ylmethoxy)-2-methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine . s prepared using a similar method described in Example 203. Purified by SFC with a DAICEL CHIRALCEL OJ-H (250 mm x 30 mm,5 um) column (eluent: 45% to 45% (v/v) EtOH with 0.1% NH ₃ -H ₂ O in supercritical CO ₂ ). MS (ESI): mass calcd. for C27H30N6O3, 486.2; m/z found, 487.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.37 (d, J = 7.2 Hz, 1H), 8.29 (s, 1H), 7.67 (d, J = 0.8 Hz, 1H), 7.56 (s, 1H), 7.19 (s, 1H), 7.07 (s, 1H), 6.95 (dd, J = 1.6, 7.2 Hz, 1H), 6.58 (s, 1H), 4.40 - 4.32 (m, 1H), 4.18 - 4.06 (m, 2H), 4.03 - 3.96 (m, 1H), 3.84 - 3.77 (m, 1H), 2.61 (s, 3H), 2.57 (s, 3H), 2.45 (s, 3H), 1.84 - 1.78 (m, 4H), 1.72 - 1.63 (m, 4H). Example 545: 5-(5-((1r,3r)-3-aminocyclobutoxy)-2-methylpyridin-4-yl)-N-(2 ,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. 6

The title compound was prepared using a similar method described in Example 203. MS (ESI): mass calcd. for C23H25N7O, 415.2; m/z found, 416.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.22 (s, 1H), 8.59 (d, J = 7.2 Hz, 1H), 8.06 (s, 1H), 7.81 (s, 1H), 7.36 (s, 1H), 7.12 - 6.95 (m, 2H), 6.88 (br. s., 1H), 5.04 - 4.91 (m, 1H), 3.61 - 3.51 (m, 1H), 2.47 (s, 3H), 2.46 (s, 3H), 2.31 (s, 3H), 2.28 - 2.23 (m, 2H), 2.20 - 2.10 (m, 2H). Example 546: N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[(3-methyloxeta n-3-yl)methoxy]- 4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. s prepared using a similar method described in Example 198. MS (ESI): mass calcd. for C24H26N6O2, 430.2; m/z found, 431.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) d 10.19 (s, 1H), 8.58 (dt, J = 7.2, 0.9 Hz, 1H), 8.39 (s, 1H), 7.81 (dd, J = 2.0, 0.9 Hz, 1H), 7.38 (s, 1H), 7.03 (s, 1H), 7.00 (dd, J = 7.2, 2.0 Hz, 1H), 6.82 (s, 1H), 4.47 (d, J = 5.8 Hz, 2H), 4.25 (d, J = 5.8 Hz, 2H), 4.20 (s, 2H), 2.48 (s, 3H), 2.45 (s, 3H), 2.30 (s, 3H), 1.30 (s, 3H). Example 547: (*R)-4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxymethyl]-1-methyl-pyrrolidin-2-one. s obtained by chiral purification (chiral SFC AS-H (2 x 25 cm) 25% ethanol (0.1% DEA)/ CO2, 100 bar) of Example 542. MS (ESI): mass calcd. for 507

C25H27N7O2, 457.2; m/z found, 458.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.19 (s, 1H), 8.57 (dt, J = 7.3, 0.9 Hz, 1H), 8.34 (s, 1H), 7.78 (dd, J = 2.0, 0.9 Hz, 1H), 7.37 (s, 1H), 7.01 (s, 1H), 6.98 (dd, J = 7.2, 2.0 Hz, 1H), 6.87 (s, 1H), 4.12 (d, J = 6.4 Hz, 2H), 3.52 – 3.39 (m, 1H), 3.19 (dd, J = 9.9, 5.6 Hz, 1H), 2.82 – 2.70 (m, 1H), 2.65 (s, 3H), 2.46 (d, J = 4.0 Hz, 6H), 2.39 (dd, J = 16.7, 9.5 Hz, 1H), 2.30 (s, 3H), 2.13 (dd, J = 16.8, 6.6 Hz, 1H). Example 548: (*R)-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxy]-1-(1-methylcyclopropyl)ethanol. imethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6- methylpyridin-3-yl)oxy)-1-(1-methylcyclopropyl)ethan-1-one. The title compound was prepared using methods analogous to those described in Example 188 and using Intermediate 16 instead of Intermediate 7 and using 2-chloro-1-(1-methylcyclopropyl)ethan-1-one instead of 4,4-difluoro- (1-hydroxycyclohexyl)methyl 4-methylbenzenesulfonate. Step B: 2-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]p yridin-5-yl)-6- methylpyridin-3-yl)oxy)-1-(1-methylcyclopropyl)ethan-1-ol. To a solution of NaBH4 (87.2 mg, 2.31 mmol) in MeOH (3 mL) was added 2-((4-(2-((2,6-dimethylpyrimidin-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)o xy)-1-(1-methylcyclopropyl)ethan- 1-one (170 mg, 0.384 mmol) slowly at 0 °C. The mixture was stirred for 40 minutes at r.t. The reaction mixture was directly concentrated to afford the crude product, which was purified by preparative HPLC using a Phenomenex Gemini NX-C1875 x 30 mm x 3 µm column (eluent: 28% to 58% (v/v) CH ₃ CN and NH ₃ H ₂ O with 10 mM NH ₄ HCO ₃ ) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (100 mg, 59%) as a white solid. 508

Step C: (*R)-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxy]-1-(1-methylcyclopropyl)ethanol. An SFC purification step, similar to that described in Example 5, was performed on 2-((4-(2-((2,6-dimethylpyrimidin-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-methylpyridin-3-yl)o xy)-1-(1-methylcyclopropyl)ethan- 1-ol to yield the title compound. MS (ESI): mass calcd. for C25H28N6O2, 444.2; m/z found, 445.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.21 (s, 1H), 8.57 (d, J = 7.2 Hz, 1H), 8.36 (s, 1H), 7.89 (d, J = 0.8 Hz, 1H), 7.36 (s, 1H), 7.09 (dd, J = 2.0, 7.2 Hz, 1H), 7.02 (s, 1H), 6.85 (s, 1H), 4.95 (d, J = 4.8 Hz, 1H), 4.22 - 4.14 (m, 1H), 4.12 - 4.03 (m, 1H), 3.23 - 3.15 (m, 1H), 2.47 (s, 3H), 2.46 (s, 3H), 2.30 (s, 3H), 1.00 (s, 3H), 0.45 - 0.37 (m, 2H), 0.23 - 0.14 (m, 2H). Example 549: (*S)-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxy]-1-(1-methylcyclopropyl)ethanol. he other isolated isomer from the SFC purification step in Example 548, Step C. MS (ESI): mass calcd. for C25H28N6O2, 444.2; m/z found, 445.1 [M+H] ⁺ . 1H NMR (400 MHz, DMSO-d6) δ 10.21 (s, 1H), 8.57 (d, J = 7.2 Hz, 1H), 8.36 (s, 1H), 7.89 (d, J = 1.2 Hz, 1H), 7.36 (s, 1H), 7.08 (dd, J = 2.0, 7.2 Hz, 1H), 7.02 (s, 1H), 6.84 (s, 1H), 4.95 (d, J = 4.4 Hz, 1H), 4.22 - 4.13 (m, 1H), 4.11 - 4.03 (m, 1H), 3.22 - 3.14 (m, 1H), 2.46 (s, 3H), 2.46 (s, 3H), 2.30 (s, 3H), 1.00 (s, 3H), 0.45 - 0.37 (m, 2H), 0.22 - 0.14 (m, 2H). Example 550: N-(2,6-dimethylpyrimidin-4-yl)-5-[5-(1,1-dioxothian-4-yl)oxy -2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine. 509

s prepared using a similar method described in Example 198. MS (ESI): mass calcd. for C24H26N6O3S, 478.2; m/z found, 479.15 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl ₃ ) δ 8.48 (dt, J = 7.2, 0.9 Hz, 1H), 8.41 (s, 1H), 8.29 (s, 1H), 7.58 (dd, J = 1.9, 0.9 Hz, 1H), 7.21 (s, 1H), 7.06 (s, 1H), 6.89 (dd, J = 7.2, 1.9 Hz, 1H), 6.67 (s, 1H), 4.56 (tt, J = 4.7, 2.4 Hz, 1H), 3.19 - 3.09 (m, 2H), 2.92 - 2.83 (m, 2H), 2.59 (d, J = 16.0 Hz, 6H), 2.44 (s, 3H), 2.44 - 2.26 (m, 4H). Example 551: N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(4-methylsulfon ylcyclohexoxy)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine. s prepared using a similar method described in Example 198. MS (ESI): mass calcd. for C26H30N6O3S, 506.2; m/z found, 507.20 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl ₃ ) δ 8.57 (s, 1H), 8.47 (dd, J = 13.6, 7.1 Hz, 1H), 8.25 (d, J = 10.7 Hz, 1H), 7.64 – 7.59 (m, 1H), 7.18 (d, J = 6.1 Hz, 1H), 7.01 (s, 1H), 6.96 – 6.89 (m, 1H), 6.64 (s, 1H), 3.46 (s, 3H), 2.81 (d, J = 2.6 Hz, 3H), 2.61 – 2.51 (m, 7H), 2.42 (d, J = 2.8 Hz, 3H), 2.31 – 2.17 (m, 2H), 1.98 (dd, J = 13.2, 3.7 Hz, 1H), 1.84 – 1.74 (m, 1H), 1.69 – 1.51 (m, 2H). 510

Example 552: 4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- methyl-3-pyridyl]oxy]cyclohexanecarbonitrile. prepared using a similar method described in Example 198. MS (ESI): mass calcd. for C26H27N7O, 453.2; m/z found, 454.20 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl ₃ ) δ 8.55 - 8.46 (m, 2H), 8.26 (d, J = 10.4 Hz, 1H), 7.64 - 7.60 (m, 1H), 7.19 (d, J = 6.1 Hz, 1H), 7.05 (d, J = 18.4 Hz, 1H), 6.95 (td, J = 7.1, 1.9 Hz, 1H), 6.63 (s, 1H), 4.44 - 4.30 (m, 1H), 2.61 (d, J = 2.1 Hz, 4H), 2.56 (s, 3H), 2.44 (s, 3H), 2.06 - 1.98 (m, 1H), 2.02 - 1.93 (m, 1H), 1.96 - 1.89 (m, 3H), 1.83 - 1.60 (m, 3H). Example 553: 5-[5-[[2-(difluoromethoxy)phenyl]methoxy]-2-methyl-4-pyridyl ]-N-(2,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. s prepared using a similar method described in Example 198. MS (ESI): mass calcd. for C27H24F2N6O2, 502.2; m/z found, 503.2 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl3) δ 8.36 (d, J = 7.4 Hz, 2H), 7.95 (s, 1H), 7.65 (d, J = 1.9 Hz, 1H), 7.40 (dd, J = 7.6, 1.7 Hz, 1H), 7.36 – 7.28 (m, 1H), 7.23 – 7.09 (m, 4H), 6.97 (dd, J = 7.1, 2.0 Hz, 1H), 6.67 – 6.31 (m, 2H), 5.21 (s, 2H), 2.63 (s, 3H), 2.57 (s, 3H), 2.48 (s, 3H). 511

Example 554: (3S)-4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxy]-2,3-dimethyl-butan-2-ol. s prepared using a similar method described in Example 198. MS (ESI): mass calcd. for C25H30N6O2, 446.2; m/z found, 447.25 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.55 - 8.44 (m, 2H), 8.30 (s, 1H), 7.58 (dd, J = 1.9, 0.9 Hz, 1H), 7.15 (s, 1H), 7.04 (s, 1H), 6.91 (dd, J = 7.2, 1.9 Hz, 1H), 6.58 (s, 1H), 5.29 (s, 1H), 4.26 (dd, J = 9.1, 5.1 Hz, 1H), 4.03 (dd, J = 9.1, 6.5 Hz, 1H), 2.60 (s, 3H), 2.55 (s, 3H), 2.43 (s, 3H), 1.99 (pd, J = 7.0, 5.1 Hz, 1H), 1.21 (s, 3H), 1.15 (s, 3H), 1.03 (d, J = 7.0 Hz, 3H). Example 555: 4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- methyl-3-pyridyl]oxy]-2-methyl-butan-2-ol. s prepared using a similar method described in Example 198. MS (ESI): mass calcd. for C ₂₄ H ₂₈ N ₆ O ₂ , 432.2; m/z found, 433.20 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.41 - 8.33 (m, 1H), 8.24 (d, J = 3.5 Hz, 1H), 7.63 (q, J = 2.5 Hz, 1H), 7.35 (q, J = 1.8, 1.1 Hz, 0H), 7.20 (d, J = 2.3 Hz, 1H), 7.06 (d, J = 3.0 Hz, 1H), 6.96 - 6.92 (m, 1H), 6.71 (d, J = 512

4.4 Hz, 1H), 4.31 - 4.23 (m, 2H), 3.59 (d, J = 17.1 Hz, 2H), 2.57 (dd, J = 13.7, 3.1 Hz, 6H), 2.42 (d, J = 3.1 Hz, 3H), 2.02 - 1.92 (m, 2H), 1.24 (d, J = 3.0 Hz, 6H). Example 556: (1s,4s)-4-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo [1,5-a]pyridin-5- yl)-6-methylpyridin-3-yl)oxy)cyclohexane-1-carbonitrile. p, similar to that described in Example 5, was performed on Example 552 to yield the title compound. MS (ESI): mass calcd. for C26H27N7O, 453.2; m/z found, 454.20 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl ₃ ) δ 8.30 (dt, J = 7.1, 0.9 Hz, 1H), 8.20 (s, 1H), 7.54 (dd, J = 2.0, 0.9 Hz, 1H), 7.47 (s, 1H), 7.11 (s, 1H), 7.02 (s, 1H), 6.87 (dd, J = 7.2, 1.9 Hz, 1H), 6.53 (s, 1H), 4.37 – 4.30 (m, 1H), 3.42 (s, 1H), 2.56 (s, 3H), 2.49 (s, 3H), 2.40 (s, 3H), 1.99 – 1.92 (m, 2H), 1.89 – 1.82 (m, 2H), 1.70 – 1.54 (m, 2H), 1.20 (s, 2H). Example 557: 5-[5-(2-aminoethoxy)-2-methyl-4-pyridyl]-N-(2,6-dimethylpyri midin-4- yl)pyrazolo[1,5-a]pyridin-2-amine. -(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyridi n- 5-yl)-6-methylpyridin-3-yl)oxy)ethyl)carbamate. The title compound was prepared using a 513

similar method described in Example 203, Step B, and using tert-butyl aziridine-1-carboxylate instead of (3-hydroxytetrahydrofuran-3-yl)methyl 4-methylbenzenesulfonate. Step B: 5-[5-(2-aminoethoxy)-2-methyl-4-pyridyl]-N-(2,6-dimethylpyri midin-4- yl)pyrazolo[1,5-a]pyridin-2-amine. A deprotection step with 1:3 TFA:DCM was used on tert- butyl (2-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a] pyridin-5-yl)-6- methylpyridin-3-yl)oxy)ethyl)carbamate to yield the title compound. MS (ESI): mass calcd. for C ₂₁ H ₂₃ N ₇ O, 389.2; m/z found, 390.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.22 (s, 1H), 8.58 (d, J = 7.2 Hz, 1H), 8.34 (s, 1H), 7.84 (s, 1H), 7.36 (s, 1H), 7.05 (dd, J = 1.6, 7.2 Hz, 1H), 7.02 (br. s., 1H), 6.87 (br. s., 1H), 4.09 (t, J = 5.6 Hz, 2H), 2.89 (t, J = 5.6 Hz, 2H), 2.47 (s, 3H), 2.46 (s, 3H), 2.30 (s, 3H). Example 558: (1R)-1-cyclopropyl-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)ami no]pyrazolo[1,5- a]pyridin-5-yl]-6-methyl-3-pyridyl]oxy]ethanol. s prepared using a similar method described in Example 203. Purified by SFC-17 over DAICEL CHIRALCEL OJ-H 250 mm x 30 mm x 5 µm (eluent: 30% to 30% (v/v) EtOH with 0.1% NH3-H2O in supercritical CO2). MS (ESI): mass calcd. for C ₂₄ H ₂₆ N ₆ O ₂ , 430.2; m/z found, 431.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.34 (d, J = 7.2 Hz, 1H), 8.30 (s, 1H), 7.66 - 7.60 (m, 1H), 7.39 (br. s., 1H), 7.18 (s, 1H), 7.05 (s, 1H), 6.95 (dd, J = 2.0, 7.2 Hz, 1H), 6.57 (s, 1H), 4.29 - 4.20 (m,1H), 4.15 - 4.07 (m, 1H), 3.33 - 3.23 (m, 1H), 2.60 (s, 3H), 2.57 (s, 3H), 2.44 (s, 3H), 2.28 (br. s., 1H), 1.03 - 0.92 (m, 1H), 0.64 - 0.51 (m, 2H), 0.46 - 0.36 (m, 1H), 0.33 - 0.25 (m, 1H). 514

Example 559: (1S)-1-cyclopropyl-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)ami no]pyrazolo[1,5- a]pyridin-5-yl]-6-methyl-3-pyridyl]oxy]ethanol. s prepared using a similar method described in Example 203. Purified by SFC-17 over DAICEL CHIRALCEL OJ-H 250 mm x 30 mm x 5 µm (eluent: 30% to 30% (v/v) EtOH with 0.1% NH3-H2O in supercritical CO2). MS (ESI): mass calcd. for C24H26N6O2, 430.2; m/z found, 431.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.34 (d, J = 7.2 Hz, 1H), 8.30 (s, 1H), 7.64 - 7.60 (m, 1H), 7.44 (br. s., 1H), 7.17 (s, 1H), 7.03 (s, 1H), 6.94 (dd, J = 2.0, 7.2 Hz, 1H), 6.56 (s, 1H), 4.27 - 4.19 (m, 1H), 4.13 - 4.06 (m, 1H), 3.33 - 3.22 (m, 1H), 2.59 (s, 3H), 2.56 (s, 3H), 2.43 (s, 3H), 2.35 (br. s., 1H), 1.01 - 0.94 (m, 1H), 0.61 - 0.53 (m, 2H), 0.44 - 0.37 (m, 1H), 0.32 - 0.26 (m, 1H). Example 560: 1-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- methyl-3-pyridyl]oxymethyl]cyclopropanecarbonitrile. s prepared using a similar method described in Example 198. MS (ESI): mass calcd. for C24H23N7O, 425.2; m/z found, 426.20 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.45 (dd, J = 7.3, 0.9 Hz, 1H), 8.21 (s, 1H), 7.80 (s, 1H), 7.71 (dd, J = 2.0, 0.9 Hz, 1H), 7.22 (s, 1H), 7.10 (s, 1H), 7.02 (dd, J = 7.2, 2.0 Hz, 1H), 6.61 (s, 1H), 4.02 (s, 2H), 2.59 (d, J = 11.3 Hz, 6H), 2.45 (s, 3H), 1.40 - 1.32 (m, 2H), 1.07 - 0.98 (m, 2H). 515

Example 561: 2-cyclopropyl-6-[[5-[5-[[(2S)-1,4-dioxan-2-yl]methoxy]-2-met hyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-4-methyl-pyridazi n-3-one. 5-(5-fluoro-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)amino)-4-methylpyridazin-3(2H)-one. The title compound was prepared as in Intermediate 15, but using 6-chloro-2-cyclopropyl-4-methylpyridazin-3(2H)-one instead of 4-chloro-2,6- dimethylpyrimidine. Step B: 2-cyclopropyl-6-[[5-[5-[[(2S)-1,4-dioxan-2-yl]methoxy]-2-met hyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-4-methyl-pyridazi n-3-one. The title compound was prepared as in Example 198, and using (s)-(1,4-dioxan-2-yl)methanol instead of trans-1,4- cyclohexanediol. MS (ESI): mass calcd. for C26H28N6O4, 488.2; m/z found, 489.20 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl ₃ ) δ 8.41 (d, J = 1.9 Hz, 1H), 8.31 - 8.24 (m, 2H), 7.73 (dd, J = 2.0, 0.9 Hz, 1H), 7.21 (s, 1H), 7.04 (d, J = 1.4 Hz, 1H), 6.94 (dd, J = 7.2, 2.0 Hz, 1H), 6.72 (d, J = 0.8 Hz, 1H), 4.16 - 4.04 (m, 2H), 3.99 - 3.93 (m, 1H), 3.89 - 3.69 (m, 4H), 3.62 (td, J = 11.3, 3.0 Hz, 1H), 3.56 - 3.47 (m, 1H), 3.14 - 3.09 (m, 1H), 2.56 (s, 3H), 2.22 (d, J = 1.3 Hz, 3H), 1.25 (dt, J = 7.2, 4.4 Hz, 2H), 1.06 - 0.94 (m, 2H). Example 562: (4S)-4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxymethyl]-1,3-dimethyl-imidazolidin-2-on e. 516

s prepared using a similar method described in Example 198. MS (ESI): mass calcd. for C25H28N8O2, 472.2; m/z found, 473.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.22 (s, 1H), 8.54 (d, J = 7.2 Hz, 1H), 8.39 (s, 1H), 7.82 (d, J = 0.8 Hz, 1H), 7.40 (s, 1H), 7.04 - 6.96 (m, 2H), 6.91 (br. s., 1H), 4.35 - 4.28 (m, 1H), 4.26 - 4.19 (m, 1H), 3.84 - 3.75 (m, 1H), 3.46 - 3.39 (m, 1H), 3.12 - 3.05 (m, 1H), 2.65 (s, 3H), 2.58 (s, 3H), 2.49 - 2.45 (m, 6H), 2.30 (s, 3H). Example 563: N-[5-[2-cyano-5-[[(3R)-1-(cyanomethyl)pyrrolidin-3-yl]methox y]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. prepared using a similar method described in Example 1. MS (ESI): mass calcd. for C24H23N7O2, 441.2; m/z found, 442.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.11 (s, 1H), 8.67 (s, 1H), 8.63 – 8.59 (m, 1H), 8.18 (s, 1H), 7.93 – 7.91 (m, 1H), 7.11 (dd, J = 7.3, 2.0 Hz, 1H), 6.93 (s, 1H), 4.30 – 4.19 (m, 2H), 3.81 (s, 2H), 2.75 – 2.54 (m, 4H), 2.49 – 2.46 (m, 1H), 2.01 – 1.89 (m, 2H), 1.69 – 1.52 (m, 1H), 0.88 – 0.78 (m, 4H). Example 564: 5-[2-[(1-methylpyrazol-3-yl)amino]pyrazolo[1,5-a]pyridin-5-y l]-6-[[(2S)- morpholin-2-yl]methoxy]pyridine-3-carbonitrile. 517

repared using a similar method described in Example 252, and using 5-bromo-6-chloronicotinonitrile instead of 5-chloro-4-iodo-2-(trifluoromethyl)pyridine in Step A and using Brettphos Pd G2 with additional Brettphos instead of BrettPhos Pd G3 in Step C. MS (ESI): mass calcd. for C ₂₂ H ₂₂ N ₈ O ₂ , 430.2; m/z found, 431.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.07 (s, 1H), 8.69 (d, J = 2.2 Hz, 1H), 8.50 – 8.44 (m, 1H), 8.36 (d, J = 2.2 Hz, 1H), 7.79 – 7.72 (m, 1H), 7.49 (d, J = 2.3 Hz, 1H), 6.94 (dd, J = 7.2, 2.1 Hz, 1H), 6.42 (s, 1H), 6.06 (d, J = 2.2 Hz, 1H), 4.44 – 4.34 (m, 2H), 3.78 – 3.70 (m, 5H), 3.49 – 3.40 (m, 1H), 2.82 (dd, J = 12.2, 2.4 Hz, 1H), 2.70 – 2.61 (m, 2H), 2.56 – 2.52 (m, 1H). Example 565: N-[5-[2-cyano-5-[[(1R,5S)-9-methyl-3-oxa-9-azabicyclo[3.3.1] nonan-7- yl]amino]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropane carboxamide. prepared using a similar method described in Example 1. MS (ESI): mass calcd. for C25H27N7O2, 457.2; m/z found, 458.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.08 (s, 1H), 8.58 (dt, J = 7.2, 0.9 Hz, 1H), 8.24 (s, 1H), 7.70 (dd, J = 2.1, 0.9 Hz, 1H), 7.65 (s, 1H), 7.20 (d, J = 10.7 Hz, 1H), 6.91 – 6.82 (m, 2H), 4.31 – 4.15 (m, 1H), 3.60 (dt, J = 10.6, 2.2 Hz, 2H), 3.36 (d, J = 10.9 Hz, 2H), 2.54 – 2.51 (m, 2H), 2.42 – 2.28 (m, 5H), 2.00 – 1.85 (m, 1H), 1.38 (d, J = 14.7 Hz, 2H), 0.89 – 0.74 (m, 4H). 518

Example 566: 3-[2-[(1-methylpyrazol-3-yl)amino]pyrazolo[1,5-a]pyridin-5-y l]-4-[[(2R)- morpholin-2-yl]methoxy]benzonitrile. repared using a similar method described in Example 116, Steps A-B, and using (R)-tert-butyl 2-((2-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-4- cyanophenoxy)methyl)morpholine-4-carboxylate instead of Intermediate 9, and using 3-bromo-1-methyl-1H-pyrazole instead of 4-bromo-1- (difluoromethyl)-1H-pyrazole. MS (ESI): mass calcd. for C ₂₃ H ₂₃ N ₇ O ₂ , 429.2; m/z found, 430.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.06 (s, 1H), 8.43 (d, J = 7.2 Hz, 1H), 7.89 (d, J = 1.6 Hz, 1H), 7.84 (dd, J = 1.6, 8.8 Hz, 1H), 7.68 - 7.62 (m, 1H), 7.49 (d, J = 1.6 Hz, 1H), 7.31 (d, J = 8.8 Hz, 1H), 6.87 (dd, J = 1.6, 7.2 Hz, 1H), 6.39 (s, 1H), 6.06 (d, J = 2.0 Hz, 1H), 4.18 - 4.06 (m, 2H), 3.78 - 3.66 (m, 5H), 3.49 - 3.45 (m, 1H), 2.85 - 2.76 (m, 1H), 2.70 - 2.58 (m, 3H) 1H NMR (400 MHz, CD3OD) δ 8.29 (d, J = 6.8 Hz, 1H), 7.76 (d, J = 2.0 Hz, 1H), 7.71 (dd, J =2.0, 8.4 Hz, 1H), 7.56 (d, J = 1.2 Hz, 1H), 7.42 (d, J = 2.4 Hz, 1H), 7.22 (d, J = 8.8 Hz, 1H), 6.87 (dd, J = 2.0, 7.2 Hz, 1H), 6.31 (s, 1H), 6.16 (d, J = 2.4 Hz, 1H), 4.20 - 4.04 (m, 2H), 3.93 - 3.85 (m, 1H), 3.84 - 3.75 (m, 4H), 3.67 - 3.57 (m, 1H), 2.91 - 2.85 (m, 1H), 2.80 - 2.73 (m, 2H), 2.71 - 2.63 (m, 1H) Example 567: 5-[2-methyl-5-(1-methylazetidin-3-yl)oxy-4-pyridyl]-N-(2-pyr idyl)pyrazolo[1,5- a]pyridin-2-amine. 519 ^N ing a similar method described in Example 162, Step B, and using 5-(2-methyl-5-((1-methylazetidin-3-yl)oxy)pyridin-4-yl)pyraz olo[1,5-a]pyridin-2- amine instead of 5-(5-((1-amino-3,3-difluorocyclobutyl)methoxy)-2-methylpyrid in-4- yl)pyrazolo[1,5-a]pyridin-2-amine and using 2-bromopyridine instead of 3-bromo-1-methyl-1H- pyrazole. MS (ESI): mass calcd. for C22H22N6O, 386.2; m/z found, 387.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 9.82 (s, 1H), 8.63 - 8.48 (m, 1H), 8.22 (s, 1H), 8.06 (s, 1H), 7.78 (s, 1H), 7.69 - 7.58 (m, 1H), 7.36 (s, 1H), 7.34 - 7.27 (m, 1H), 7.04 - 6.93 (m, 1H), 6.90 (s, 1H), 6.84 - 6.77 (m, 1H), 4.96 - 4.81 (m, 1H), 3.87 - 3.59 (m, 2H), 3.12 - 2.91 (m, 2H), 2.46 (s, 3H), 2.28 (s, 3H). Example 568: 5-[2-methyl-5-(1-methylazetidin-3-yl)oxy-4-pyridyl]-N-(1-met hylpyrazol-4- yl)pyrazolo[1,5-a]pyridin-2-amine. The a similar method described in Example 567 and using 4-bro mo-1-methyl-1H-pyrazole instead of 2-bromopyridine. MS (ESI): mass calcd. for C21H23N7O, 389.2; m/z found, 390.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 8.49 - 8.42 (m, 2H), 8.04 (s, 1H), 7.77 (s, 1H), 7.60 (d, J = 1.2 Hz, 1H), 7.38 (d, J = 0.4 Hz, 1H), 7.34 (s, 1H), 6.84 (dd, J = 2.0, 7.2 Hz, 1H), 5.95 (s, 1H), 4.97 - 4.77 (m, 1H), 3.81 (s, 3H), 3.75 - 3.67 (m, 2H), 3.03 - 2.93 (m, 2H), 2.45 (s, 3H), 2.27 (s, 3H). 520

Example 569: (1*R, 3*R)-N-[5-[5-(3-hydroxycyclopentoxy)-2-methyl-4-pyridyl]pyra zolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. as prepared using methods analogous to those described in Example 136. Purified by chiral SFC over DAICEL CHIRALPAK AD (250 mm x 30 mm x 10 um) (eluent: supercritical CO ₂ in EtOH (0.1% v/v ammonia) 50/50, v/v). MS (ESI): mass calcd. for C22H24N4O3, 392.2; m/z found, 393.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.10 (s, 1H), 8.56 (d, J = 7.2 Hz, 1H), 8.27 (s, 1H), 7.77 (d, J = 1.2 Hz, 1H), 7.34 (s, 1H), 7.00 (dd, J = 2.0, 7.2 Hz, 1H), 6.89 (s, 1H), 5.04 - 4.95 (m, 1H), 4.60 (d, J = 3.6 Hz, 1H), 4.24 - 4.16 (m, 1H), 2.45 (s, 3H), 2.18 - 2.06 (m, 1H), 1.98 - 1.87 (m, 3H), 1.86 - 1.75 (m, 1H), 1.72 - 1.63 (m, 1H), 1.54 - 1.44 (m, 1H), 0.88 - 0.77 (m, 4H). Example 570: N-[5-[5-[(2R)-2-amino-3,3,3-trifluoro-propoxy]-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. as prepared using a similar method described in Example 188. MS (ESI): mass calcd. for C ₂₀ H ₂₀ F ₃ N ₅ O ₂ , 419.2; m/z found, 420.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.45 (s, 1H), 8.28 (d, J = 7.6 Hz, 1H), 8.26 (s, 1H), 7.64 (s, 1H), 7.19 (s, 1H), 7.02 (s, 521

1H), 6.92 (d, J = 7.2 Hz, 1H), 4.25 (d, J = 4.4 Hz, 2H), 3.62 - 3.52 (m, 1H), 2.57 (s, 3H), 1.62 - 1.52 (m, 3H), 1.19 - 1.11 (m, 2H), 0.95 - 0.88 (m, 2H). ¹⁹ F NMR (376 MHz, CDCl3) δ -76.13 (d, J=7.1 Hz, 3F). Example 571: (3RS, 4RS)-N-[5-[5-[(4-methoxy-1-methyl-pyrrolidin-3-yl)methoxy]-2 -methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. as prepared using a similar method described in Example 248. MS (ESI): mass calcd. for C24H29N5O3, 435.2; m/z found, 436.2 [M+H] ⁺ . ¹ H NMR (500 MHz, CD ₃ OD) d 8.45 – 8.39 (m, 1H), 8.24 (s, 1H), 7.77 – 7.73 (m, 1H), 7.36 (s, 1H), 7.01 (dd, J = 7.2, 2.0 Hz, 1H), 6.90 (s, 1H), 4.18 – 4.09 (m, 2H), 3.74 – 3.70 (m, 1H), 3.16 (s, 3H), 2.96 – 2.90 (m, 1H), 2.74 (dd, J = 10.6, 2.5 Hz, 1H), 2.58 – 2.54 (m, 1H), 2.53 (s, 3H), 2.47 – 2.42 (m, 1H), 2.25 (s, 3H), 2.23 – 2.18 (m, 1H), 1.92 – 1.83 (m, 1H), 1.04 – 0.98 (m, 2H), 0.93 – 0.85 (m, 2H). Example 572: N-[5-[2-methyl-5-[[(2S)-1-methylpyrrolidin-2-yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. as prepared using a similar method described in Example 136. MS (ESI): mass calcd. for C23H27N5O2, 405.2; m/z found, 406.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 9.30 (s, 1H), 8.21 (d, J = 8.2 Hz, 2H), 7.67 - 7.62 (m, 1H), 7.09 (s, 1H), 6.96 (s, 1H), 522

6.88 (dd, J = 7.2, 1.9 Hz, 1H), 4.03 (dd, J = 9.1, 5.2 Hz, 1H), 3.88 (dd, J = 9.0, 5.9 Hz, 1H), 2.98 (ddd, J = 9.1, 6.7, 2.2 Hz, 1H), 2.59 - 2.48 (m, 1H), 2.47 (s, 3H), 2.29 (s, 3H), 2.18 (td, J = 9.4, 7.2 Hz, 1H), 1.96 - 1.82 (m, 1H), 1.78 - 1.46 (m, 4H), 1.17 - 1.04 (m, 2H), 0.80 (dq, J = 7.4, 4.0 Hz, 2H). Example 573: N-[5-[5-[[(2S)-1-(2-fluoroethyl)azetidin-2-yl]methoxy]-2-met hyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. as prepared using methods analogous to those described in Example 457, Step B. MS (ESI): mass calcd. for C23H26FN5O2, 423.2; m/z found, 424.3 [M+H] ⁺ . 1H NMR (400 MHz, CDCl ₃ ) δ 8.31 (s, 1H), 8.28 - 8.23 (m, 2H), 7.69 (s, 1H), 7.15 (s, 1H), 6.99 (s, 1H), 6.95 (dd, J = 1.6, 7.2 Hz, 1H), 4.44 - 4.20 (m, 2H), 4.16 - 4.04 (m, 2H), 3.57 - 3.45 (m, 2H), 3.02 - 2.90 (m, 1H), 2.89 - 2.73 (m, 1H), 2.72 - 2.57 (m, 1H), 2.55 (s, 3H), 2.13 - 2.02 (m, 2H), 1.61 - 1.51(m, 1H), 1.19 - 1.09 (m, 2H), 0.97 - 0.85 (m, 2H). ¹⁹ F NMR (376 MHz, CDCl3) δ -221.47 - -221.92 (m, 1F). Example 574: N-[5-[5-[[(2R)-1-cyclopropylazetidin-2-yl]methoxy]-2-methyl- 4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 523

as prepared using methods analogous to those described in Example 7 and using (R)-N-(5-(5-(azetidin-2-ylmethoxy)-2-methylpyridin-4-yl)pyra zolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide instead of (S)-N-(5-(2-cyano-5-(pyrrolidin-3- yloxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanec arboxamide. MS (ESI): mass calcd. for C24H27N5O2, 417.2; m/z found, 418.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.09 (s, 1H), 8.57 (d, J = 7.6 Hz, 1H), 8.32 (s, 1H), 7.95 (d, J = 0.8 Hz, 1H), 7.36 (s, 1H), 7.11 (dd, J = 1.6, 7.2 Hz, 1H), 6.86 (s, 1H), 4.16 - 4.09 (m, 1H), 4.08 - 4.02 (m, 1H), 3.65 - 3.54 (m, 1H), 3.24 - 3.15 (m, 1H), 3.04 - 2.94 (m, 1H), 2.46 (s, 3H), 2.02 - 1.81 (m, 4H), 0.89 - 0.76 (m, 4H), 0.26 - 0.17 (m, 1H), 0.16 - 0.06 (m, 3H) Example 575: N-[5-[2-methyl-5-[[(2S)-1-(trideuteriomethyl)azetidin-2-yl]m ethoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. as prepared using the Suzuki coupling method analogous to that described in Example 329, Step D, and using (S)-4-iodo-2-methyl-5-((1-methyl-d3-azetidin-2- yl)methoxy)pyridine and Intermediate 3 instead of 3-((6-(difluoromethoxy)-4-iodopyridin-3- yl)oxy)-2,2-dimethylpropanenitrile and Intermediate 22. MS (ESI): mass calcd. for C22H22D3N5O2, 394.2; m/z found, 395.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.54 - 8.45 (m, 524 1H), 8.30 - 8.20 (m, 2H), 7.71 (d, J = 0.8 Hz, 1H),7.16 (s, 1H), 6.99 (s, 1H), 6.96 (dd, J = 2.0, 7.6 Hz, 1H), 4.10 - 4.04 (m, 2H), 3.46 - 3.29 (m, 2H), 2.87 - 2.78 (m, 1H), 2.55 (s, 3H), 2.07 - 1.96 (m, 2H), 1.62 - 1.52 (m, 1H), 1.19 - 1.11 (m, 2H), 0.95 - 0.86 (m, 2H). Example 576: N-[5-[2-methyl-5-[[(2R)-1-(trideuteriomethyl)azetidin-2-yl]m ethoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. The title compound was prepared using the Suzuki coupling method analogous to that described in Example 575 and using (R)-4-iodo-2-methyl-5-((1-methyl-d3-azetidin-2- yl)methoxy)pyridine instead of (S)-4-iodo-2-methyl-5-((1-methyl-d3-azetidin-2- yl)methoxy)pyridine. MS (ESI): mass calcd. for C22H22D3N5O2, 394.2; m/z found, 395.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.51 (s, 1H), 8.28 - 8.23 (m, 2H), 7.71 (d, J = 1.2 Hz, 1H), 7.16 (s, 1H), 6.99 (s, 1H), 6.96 (dd, J = 1.6, 7.2 Hz, 1H), 4.12 - 4.05 (m, 2H), 3.46 - 3.33 (m, 2H), 2.88 - 2.80 (m, 1H), 2.55 (s, 3H), 2.08 - 1.98 (m, 2H), 1.62 - 1.54 (m, 1H), 1.17 - 1.12 (m, 2H), 0.94 - 0.87 (m, 2H). Example 577: (*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-(5,5-dimethyltetrah ydrofuran-3- yl)oxy-2-methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. 525

The title compound was prepared using a similar method described in Example 198. Purified by SFC over DAICEL CHIRALPAK AD 250 mm x 30 mm x 10 µm (eluent: 45% to 45% (v/v) EtOH with 0.1% NH ₃ -H ₂ O in supercritical CO ₂ ). MS (ESI): mass calcd. for C ₂₅ H ₂₈ N ₆ O ₂ , 444.2; m/z found, 445.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.19 (s, 1H), 8.58 (d, J = 7.2 Hz, 1H), 8.27 (s, 1H), 7.80 (d, J = 1.2 Hz, 1H), 7.36 (s, 1H), 7.04 - 6.98 (m, 2H), 6.85 (s, 1H), 5.22 - 5.15 (m, 1H), 4.04 (dd, J = 4.8, 10.4 Hz, 1H), 3.85 (d, J = 10.4 Hz, 1H), 2.46 (s, 3H), 2.46 (s, 3H), 2.30 (s, 3H), 2.15 (dd, J = 6.8, 13.6 Hz, 1H), 1.89 (d, J = 14.0 Hz, 1H), 1.19 (s, 3H), 1.18 (s, 3H). Example 578: (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-(2,2-dimethyltetrah ydropyran-4- yl)oxy-2-methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. s prepared using a similar method described in Example 198. Purified by SFC over DAICEL CHIRALCEL OD-H 250 mm x 30 mm x 5 µm (eluent: 45% to 45% (v/v) IPA with 0.1% NH ₃ -H ₂ O in supercritical CO ₂ ). MS (ESI): mass calcd. for C26H30N6O2, 458.2; m/z found, 459.2 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl3) δ 8.37 (d, J = 7.0 Hz, 1H), 8.28 (s, 1H), 7.64 - 7.60 (m, 1H), 7.47 (s, 1H), 7.19 (s, 1H), 7.07 (s, 1H), 6.95 (dd, J = 1.5, 7.0 Hz, 1H), 6.59 (s, 1H), 4.58 - 4.49 (m, 1H), 3.85 - 3.78 (m, 1H), 3.67 - 3.59 (m, 1H), 2.61 (s, 3H), 2.56 (s, 3H), 2.45 (s, 3H), 2.01 - 1.92 (m, 2H), 1.64 - 1.58 (m, 1H), 1.55 - 1.48 (m, 1H), 1.22 (s, 3H), 1.18 (s, 3H). Example 579: N-[3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5- a]pyridin-5-yl]-6- methyl-3-pyridyl]oxy]cyclobutyl]methanesulfonamide. 526

p s prepared using a similar method described in Example 198. MS (ESI): mass calcd. for C ₂₄ H ₂₇ N ₇ O ₃ S, 493.2; m/z found, 494.20 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl3) δ 8.36 - 8.28 (m, 1H), 8.01 (s, 1H), 7.80 (s, 1H), 7.57 - 7.51 (m, 1H), 7.11 (d, J = 6.6 Hz, 1H), 6.97 (d, J = 17.4 Hz, 1H), 6.84 (dd, J = 7.2, 2.0 Hz, 1H), 6.57 (d, J = 12.8 Hz, 1H), 5.13 (s, 1H), 4.41 (p, J = 6.9 Hz, 1H), 3.64 (p, J = 8.0 Hz, 1H), 3.01 - 2.91 (m, 2H), 2.86 (d, J = 11.2 Hz, 3H), 2.51 (d, J = 31.9 Hz, 6H), 2.37 (s, 3H), 2.14 - 2.04 (m, 2H). Example 580: N-[3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5- a]pyridin-5-yl]-6- methyl-3-pyridyl]oxy]cyclobutyl]methanesulfonamide. p s obtained by an SFC chiral purification (similar to that described in Example 5) of Example 579. MS (ESI): mass calcd. for C24H27N7O3S, 493.2; m/z found, 494.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.38 (d, J = 7.2 Hz, 1H), 8.00 (s, 1H), 7.62 (d, J = 1.2 Hz, 1H), 7.48 (s, 1H), 7.20 (s, 1H), 7.07 (s, 1H), 6.93 (dd, J = 2.0, 7.2 Hz, 1H), 6.62 (s, 1H), 4.93 - 4.86 (m, 1H), 4.81 (br. s., 1H), 4.26 - 4.14 (m, 1H), 2.93 (s, 3H), 2.70 - 2.62 (m, 2H), 2.61 (s, 3H), 2.56 (s, 3H), 2.52 - 2.47 (m, 2H), 2.46 (s, 3H). 527

Example 581: (1r,4r)-4-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo [1,5-a]pyridin-5- yl)-6-methylpyridin-3-yl)oxy)cyclohexane-1-carbonitrile. p ep, similar to that described in Example 5, was performed on Example 552 to yield the title compound. MS (ESI): mass calcd. for C ₂₆ H ₂₇ N ₇ O, 453.2; m/z found, 454.2 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl ₃ ) d 8.43 (dt, J = 7.3, 1.0 Hz, 1H), 8.27 (s, 1H), 7.69 (s, 1H), 7.64 (dd, J = 2.0, 0.9 Hz, 1H), 7.21 (s, 1H), 7.13 (s, 1H), 6.97 (dd, J = 7.2, 1.9 Hz, 1H), 6.63 (s, 1H), 4.36 (dt, J = 6.5, 3.6 Hz, 1H), 2.68 (dt, J = 8.2, 4.0 Hz, 1H), 2.63 (s, 3H), 2.58 (s, 3H), 2.48 (s, 3H), 2.00 – 1.92 (m, 4H), 1.85 – 1.72 (m, 4H). Example 582: (3*R, 6*R)-6-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin- 5-yl]-6-methyl-3-pyridyl]oxymethyl]tetrahydropyran-3-ol. s prepared using a similar method described in Example 203. Purified by SFC over DAICEL CHIRALPAK AD 250 mm x 30 mm, 10 µm (eluent: 40% to 40% (v/v) supercritical CO2 in IPA and H2O with 0.1% NH3). MS (ESI): mass calcd. for C ₂₅ H ₂₈ N ₆ O ₃ , 460.2; m/z found, 461.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.21 (s, 1H), 528 8.57 (d, J = 7.2 Hz, 1H), 8.35 (s, 1H), 7.93 (s, 1H), 7.38 (s, 1H), 7.14 (dd, J = 1.6, 7.6 Hz, 1H), 7.01 (s, 1H), 6.88 (s, 1H), 4.61 (s, 1H), 4.17 - 4.06 (m, 2H), 3.82 - 3.71 (m, 1H), 3.70 - 3.62 (m, 1H), 3.61 - 3.56 (m, 1H), 3.53 - 3.44 (m, 1H), 2.46 (s, 3H), 2.46 (s, 3H), 2.30 (s, 3H), 1.87 - 1.58 (m, 3H), 1.46 - 1.34 (m, 1H). Example 583: N-[5-(2-cyano-5-ethoxy-4-pyridyl)pyrazolo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide. ared using a similar method described in Example 1. MS (ESI): mass calcd. for C19H17N5O2, 347.1; m/z found, 348.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.11 (s, 1H), 8.65 (s, 1H), 8.62 – 8.58 (m, 1H), 8.17 (s, 1H), 7.94 – 7.92 (m, 1H), 7.11 (dd, J = 7.3, 2.0 Hz, 1H), 6.94 – 6.91 (m, 1H), 4.37 (q, J = 7.0 Hz, 2H), 1.99 – 1.89 (m, 1H), 1.37 (t, J = 6.9 Hz, 3H), 0.86 – 0.79 (m, 4H). Example 584: N-[5-[2-cyano-5-(cyclopropylmethoxy)-4-pyridyl]pyrazolo[1,5- a]pyridin-2- yl]cyclopropanecarboxamide. red using a similar method described in Example 1. MS (ESI): mass calcd. for C ₂₁ H ₁₉ N ₅ O ₂ , 373.2; m/z found, 374.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.41 (s, 1H), 8.34 – 8.28 (m, 2H), 7.75 (dd, J = 2.0, 0.9 Hz, 1H), 7.73 (s, 1H), 7.06 (s, 529

1H), 6.93 (dd, J = 7.3, 2.0 Hz, 1H), 4.08 (d, J = 6.9 Hz, 2H), 1.65 – 1.53 (m, 1H), 1.33 – 1.21 (m, 1H), 1.18 – 1.12 (m, 2H), 0.95 – 0.88 (m, 2H), 0.71 – 0.63 (m, 2H), 0.41 – 0.32 (m, 2H). Example 585: N-[5-[2-cyano-5-[[(3R)-3-piperidyl]methoxy]-4-pyridyl]pyrazo lo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide. prepared using a similar method described in Example 1. MS (ESI): mass calcd. for C ₂₃ H ₂₄ N ₆ O ₂ , 416.2; m/z found, 417.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.16 (s, 1H), 8.67 (s, 1H), 8.64 (d, J = 7.2 Hz, 1H), 8.19 (s, 1H), 7.91 (s, 1H), 7.09 (dd, J = 1.6, 7.2 Hz, 1H), 6.94 (s, 1H), 4.27 - 4.17 (m, 2H), 3.15 - 3.10 (m, 1H), 3.07 - 3.01 (m, 1H), 2.63 - 2.53 (m, 2H), 2.16 - 2.02 (m, 1H), 1.99 - 1.89 (m, 1H), 1.84 - 1.65 (m, 2H), 1.57 - 1.44 (m, 1H), 1.35 - 1.20 (m, 1H), 0.86 - 0.80 (m, 4H). Example 586: N-(5-(5-(((1r,4r)-4-aminocyclohexyl)methoxy)-2-cyanopyridin- 4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide. prepared using methods analogous to those described in Example 8. MS (ESI): mass calcd. for C ₂₄ H ₂₆ N ₆ O ₂ , 430.2; m/z found, 431.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.16 (s, 1H), 8.68 - 8.63 (m, 2H), 8.19 (s, 1H), 7.92 (s, 1H), 7.09 (dd, J 530

= 1.6, 7.2 Hz, 1H), 6.92 (s, 1H), 4.15 (d, J = 6.0 Hz, 2H), 2.92 - 2.80 (m, 1H), 2.00 - 1.89 (m, 3H), 1.88 - 1.69 (m, 3H), 1.33 - 1.23 (m, 2H), 1.18 - 1.07 (m, 2H), 0.86 - 0.80 (m, 4H). Example 587: N-[5-[5-(6-azaspiro[3.3]heptan-2-yloxy)-2-cyano-4-pyridyl]py razolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. prepared using methods analogous to those described in Example 6. MS (ESI): mass calcd. for C ₂₃ H ₂₂ N ₆ O ₂ , 414.2; m/z found, 415.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.12 (s, 1H), 8.61 (d, J = 7.3 Hz, 1H), 8.45 (s, 1H), 8.17 (s, 1H), 7.91 (d, J = 1.9 Hz, 1H), 7.09 (dd, J = 7.3, 2.0 Hz, 1H), 6.93 (s, 1H), 4.94 (t, J = 6.7 Hz, 1H), 3.47 (d, J = 35.5 Hz, 4H), 2.74 (ddd, J = 10.1, 6.8, 3.2 Hz, 2H), 2.19 (t, J = 9.8 Hz, 2H), 1.93 (td, J = 7.6, 3.9 Hz, 1H), 0.91 – 0.73 (m, 4H). Example 588: N-[5-[2-cyano-5-[[(3R)-1-(2,2,2-trifluoroethyl)pyrrolidin-3- yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. prepared using methods analogous to those described in Example 5. MS (ESI): mass calcd. for C ₂₄ H ₂₃ F ₃ N ₆ O ₂ , 484.2; m/z found, 485.1 [M+H] ⁺ . ¹ H NMR 531

(400 MHz, DMSO-d6) δ 11.11 (s, 1H), 8.67 (s, 1H), 8.62 – 8.57 (m, 1H), 8.18 (s, 1H), 7.93 – 7.89 (m, 1H), 7.10 (dd, J = 7.3, 2.0 Hz, 1H), 6.96 – 6.89 (m, 1H), 4.30 – 4.18 (m, 2H), 3.28 – 3.16 (m, 2H), 2.84 (t, J = 7.9 Hz, 1H), 2.74 – 2.65 (m, 2H), 2.64 – 2.52 (m, 2H), 1.99 – 1.87 (m, 2H), 1.64 – 1.52 (m, 1H), 0.88 – 0.77 (m, 4H). Example 589: N-[5-[2-cyano-5-[[(3R)-1-cyclopropylpyrrolidin-3-yl]methoxy] -4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. prepared using methods analogous to those described in Example 7. MS (ESI): mass calcd. for C ₂₅ H ₂₆ N ₆ O ₂ , 442.2; m/z found, 443.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.11 (s, 1H), 8.66 (s, 1H), 8.64 – 8.60 (m, 1H), 8.18 (s, 1H), 7.94 – 7.90 (m, 1H), 7.10 (dd, J = 7.3, 2.0 Hz, 1H), 6.92 (s, 1H), 4.20 (d, J = 6.9 Hz, 2H), 2.78 – 2.71 (m, 1H), 2.63 – 2.52 (m, 3H), 2.49 – 2.42 (m, 1H), 1.98 – 1.82 (m, 2H), 1.61 – 1.44 (m, 2H), 0.87 – 0.78 (m, 4H), 0.40 – 0.30 (m, 2H), 0.29 – 0.20 (m, 2H). Example 590: N-[5-[2-cyano-5-[1-(2,2,2-trifluoroethyl)azetidin-3-yl]oxy-4 - pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 532

prepared using methods analogous to those described in Example 5. MS (ESI): mass calcd. for C ₂₂ H ₁₉ F ₃ N ₆ O ₂ , 456.2; m/z found, 457.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.12 (s, 1H), 8.62 (d, J = 7.3 Hz, 1H), 8.40 (s, 1H), 8.22 (s, 1H), 7.97 (d, J = 1.9 Hz, 1H), 7.14 (dd, J = 7.3, 2.1 Hz, 1H), 6.95 (s, 1H), 5.29 – 5.16 (m, 1H), 3.94 (t, J = 7.2 Hz, 2H), 3.45 – 3.36 (m, 2H), 2.02 – 1.85 (m, 1H), 0.93 – 0.72 (m, 4H).19F NMR (376 MHz, DMSO) d -69.85, -69.88, -69.90. Example 591: N-(5-(5-(((1r,3r)-3-aminocyclobutyl)methoxy)-2-cyanopyridin- 4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide. prepared using methods analogous to those described in Example 6. MS (ESI): mass calcd. for C22H22N6O2, 402.2; m/z found, 403.2 [M+H] ⁺ . ¹ H NMR (400MHz, DMSO-d6) δ 11.14 (s, 1H), 8.67 (s, 1H), 8.62 (d, J = 6.8 Hz, 1H), 8.18 (s, 1H), 7.92 (s, 1H), 7.09 (d, J = 6.4 Hz, 1H), 6.91 (s, 1H), 4.32 (d, J = 6.4 Hz, 2H), 3.17 - 3.08 (m, 1H), 2.64 - 2.53 (m, 1H), 2.20 - 2.01 (m, 2H), 1.99 - 190 (m, 1H), 1.87 - 1.68 (m, 2H), 0.97 - 0.73 (m, 4H). Example 592: N-[5-[2-cyano-5-[[(2R)-morpholin-2-yl]methoxy]-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. 533

prepared using methods analogous to those described in Example 6. MS (ESI): mass calcd. for C ₂₂ H ₂₂ N ₆ O ₃ , 418.2; m/z found, 419.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.15 (s, 1H), 8.66 (s, 1H), 8.63 (d, J = 7.2 Hz, 1H), 8.20 (s, 1H), 8.02 (d, J = 1.2 Hz, 1H), 7.16 (dd, J = 2.0, 7.2 Hz, 1H), 6.92 (s, 1H), 4.34 - 4.27 (m, 2H), 3.80 - 3.69 (m, 2H), 3.54 - 3.44 (m, 1H), 2.82 (dd, J = 1.6, 12.0 Hz, 1H), 2.69 - 2.53 (m, 3H), 1.98 - 1.89 (m, 1H), 0.87 - 0.79 (m, 4H). Example 593: N-[5-[2-cyano-5-[[(3S)-3-piperidyl]methoxy]-4-pyridyl]pyrazo lo[1,5-a]pyridin-2- yl]cyclopropanecarboxamide. prepared using methods analogous to those described in Example 6. MS (ESI): mass calcd. for C ₂₃ H ₂₄ N ₆ O ₂ , 416.2; m/z found, 417.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.15 (s, 1H), 8.67 (s, 1H), 8.63 (d, J = 7.2 Hz, 1H), 8.19 (s, 1H), 7.91 (s, 1H), 7.09 (dd, J = 1.6, 7.2 Hz, 1H), 6.94 (s, 1H), 4.27 - 4.17 (m, 2H), 3.20 - 2.98 (m, 2H), 2.64 - 2.54 (m, 2H), 2.17 - 2.04 (m, 1H), 2.00 - 1.92 (m, 1H), 1.83 - 1.66 (m, 2H), 1.57 - 1.45 (m, 1H), 1.33 - 1.26 (m, 1H), 0.85 - 0.81 (m, 4H). 534

Example 594: N-[5-[2-cyano-5-[(3R)-pyrrolidin-3-yl]oxy-4-pyridyl]pyrazolo [1,5-a]pyridin-2- yl]cyclopropanecarboxamide. prepared using methods analogous to those described in Example 6, except (R)-pyrrolidin-3-ol was used instead of (S)-pyrrolidin-3-ol. MS (ESI): mass calcd. for C ₂₁ H ₂₀ N ₆ O ₂ , 388.2; m/z found, 389.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.14 (s, 1H), 8.64 (s, 1H), 8.59 (d, J = 6.8 Hz, 1H), 8.18 (s, 1H), 7.93 (s, 1H), 7.10 (dd, J = 1.6, 7.2 Hz, 1H), 6.93 (s, 1H), 5.28 - 5.22 (m, 1H), 3.15 - 3.07 (m, 1H), 2.99 - 2.86 (m, 2H), 2.84 - 2.76 (m, 1H), 2.16 - 2.03 (m, 1H), 1.99 - 1.89 (m, 1H), 1.88 - 1.79 (m, 1H), 0.86 - 0.79 (m, 4H) Example 595: (1*S, 4*S, 5*R)-N-[5-[2-cyano-5-[(2-methyl-2-azabicyclo[2.2.1]heptan-5- yl)oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropaneca rboxamide. prepared using the reductive amination method analogous to that described in Example 164, followed by the SFC purification step described in Example 5. MS (ESI): mass calcd. for C24H24N6O2, 428.2; m/z found, 429.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.15 (s, 1H), 8.68 (s, 1H), 8.61 (d, J = 7.2 Hz, 1H), 8.19 (s, 1H), 7.89 (s, 1H), 7.10 - 7.03 (m, 1H), 6.93 (s, 1H), 4.93 - 4.76 (m, 1H), 3.55 - 3.51 (m, 1H), 3.00 - 2.86 (m, 1H), 2.76 - 2.66 (m, 1H), 2.62 - 2.55 (m, 2H), 2.47 (s, 3H), 2.00 - 1.88 (m, 1H), 1.85 - 1.75 (m, 1H), 1.74 - 1.66 (m, 1H), 1.65 - 1.54 (m, 1H), 0.91 - 0.70 (m, 4H). 535

Example 596: N-[5-[2-cyano-5-[[3-(cyanomethylamino)cyclobutyl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. prepared using methods analogous to those described in Example 5. MS (ESI): mass calcd. for C24H23N7O2, 441.2; m/z found, 442.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.14 (s, 1H), 8.65 (s, 1H), 8.62 (d, J = 7.6 Hz, 1H), 8.20 (s, 1H), 7.93 (s, 1H), 7.11 (dd, J = 2.0, 7.2 Hz, 1H), 6.93 (s, 1H), 4.27 (d, J = 6.0 Hz, 2H), 3.51 (d, J = 7.2 Hz, 2H), 3.25 - 3.13 (m, 1H), 2.70 - 2.62 (m, 1H), 2.45 - 2.35 (m, 1H), 2.34 - 2.25 (m, 2H), 1.98 - 1.89 (m, 1H), 1.68 - 1.57 (m, 2H), 0.87 - 0.79 (m, 4H). Example 597: N-[5-[2-cyano-5-[[3-(cyclopropylamino)cyclobutyl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. prepared using methods analogous to those described in Example 5. MS (ESI): mass calcd. for C ₂₅ H ₂₆ N ₆ O ₂ , 442.2; m/z found, 443.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.15 (s, 1H), 8.66 - 8.59 (m, 2H), 8.19 (s, 1H), 7.93 (s, 1H), 7.10 (dd, J = 1.6, 7.2 Hz, 1H), 6.93 (s, 1H), 4.24 (d, J = 6.4 Hz, 2H), 3.18 - 3.08 (m, 1H), 2.40 - 2.29 (m, 1H), 2.29 - 2.19 (m, 2H), 1.99 - 1.89 (m, 2H), 1.64 - 1.52 (m, 2H), 0.88 - 0.78 (m, 4H), 0.29 - 0.22 (m, 2H), 0.14 - 0.07 (m, 2H). 536

Example 598: ethyl 2-[[3-[[6-cyano-4-[2-(cyclopropanecarbonylamino)pyrazolo[1,5 -a]pyridin- 5-yl]-3-pyridyl]oxymethyl]cyclobutyl]amino]acetate. pared using methods analogous to those described in Example 5. MS (ESI): mass calcd. for C26H28N6O4, 488.2; m/z found, 489.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.13 (s, 1H), 8.70 - 8.57 (m, 2H), 8.19 (s, 1H), 7.93 (s, 1H), 7.11 (dd, J = 1.2 Hz, 7.2 Hz, 1H), 6.92 (s, 1H), 4.25 (d, J = 6.0 Hz, 2H), 4.06 (q, J = 7.2 Hz, 2H), 3.21 (s, 2H), 3.15 - 3.01 (m, 1H), 2.36 - 2.27 (m, 1H), 2.25 - 2.14 (m, 2H), 1.99 - 1.87 (m, 1H), 1.65 - 1.51 (m, 2H), 1.16 (t, J = 6.8 Hz, 4H), 0.94 - 0.73 (m, 4H). Example 599: N-[5-[5-[[3-(benzylamino)cyclobutyl]methoxy]-2-cyano-4-pyrid yl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. prepared using methods analogous to those described in Example 5. MS (ESI): mass calcd. for C29H28N6O2, 492.2; m/z found, 493.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.14 (s, 1H), 8.67 - 8.55 (m, 2H), 8.18 (s, 1H), 7.92 (s, 1H), 7.31 - 7.23 (m, 4H), 7.22 - 7.16 (m, 1H), 7.10 (dd, J = 1.6, 7.2 Hz, 1H), 6.94 (s, 1H), 4.24 (d, J = 6.0 Hz, 2H), 3.57 (s, 2H), 3.15 - 2.99 (m, 1H), 2.39 - 2.27 (m, 1H), 2.26 - 2.15 (m, 2H), 2.14 - 2.02 (m, 1H), 2.00 - 1.84 (m, 1H), 1.62 - 1.48 (m, 2H), 0.93 - 0.76 (m, 4H). 537

Example 600: 1-[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]py ridin-5-yl]-6- methyl-pyridazin-3-yl]oxy-2-methyl-propan-2-ol. s prepared using methods analogous to those described in Example 488. MS (ESI): mass calcd. for C ₂₂ H ₂₅ N ₇ O ₂ , 419.2; m/z found, 420.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) d 10.23 (s, 1H), 8.65 (dd, J = 7.2, 1.0 Hz, 1H), 8.04 (dd, J = 2.0, 0.9 Hz, 1H), 7.73 (s, 1H), 7.16 (dd, J = 7.2, 2.0 Hz, 1H), 7.02 (s, 1H), 6.88 (s, 1H), 4.69 (s, 1H), 4.28 (s, 2H), 2.59 (s, 3H), 2.46 (s, 3H), 2.30 (s, 3H), 1.20 (s, 6H). Example 601: N-[5-[5-[[(2S)-morpholin-2-yl]methoxy]-2-(trifluoromethyl)-4 - pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. -(trifluoromethyl)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide. The title compound was prepared using methods analogous to those described in Intermediate 5 and using 5-chloro-4-iodo-2-(trifluoromethyl)pyridine instead of 4-bromo-5-chloropyridine-2-carbonitrile. Step B: N-[5-[5-[[(2S)-morpholin-2-yl]methoxy]-2-(trifluoromethyl)-4 - pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. The title compound was prepared using methods analogous to those described in Example 136. MS (ESI): mass calcd. for 538

C22H22F3N5O3, 461.2; m/z found, 462.0 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) d 11.11 (s, 1H), 8.66 (s, 1H), 8.60 (dd, J = 7.3, 1.0 Hz, 1H), 8.01 (d, J = 2.0 Hz, 1H), 7.95 (s, 1H), 7.16 (dd, J = 7.3, 2.1 Hz, 1H), 6.92 (s, 1H), 4.28 (d, J = 4.8 Hz, 2H), 3.83 – 3.66 (m, 2H), 3.46 (td, J = 10.8, 3.2 Hz, 1H), 2.82 (dd, J = 12.2, 2.4 Hz, 1H), 2.72 – 2.58 (m, 2H), 2.58 – 2.51 (m, 1H), 2.44 – 2.31 (m, 1H), 2.01 – 1.84 (m, 1H), 0.91 – 0.73 (m, 4H). ¹⁹ F NMR (376 MHz, DMSO) d -65.17. Example 602: (1*R, 3*S)-N-[5-[5-(3-hydroxycyclohexoxy)-2-methyl-4-pyridyl]pyraz olo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. as prepared using methods analogous to those described in Example 136. Purified by SFC over DAICEL CHIRALPAK AD(250mm*30mm,10um), (eluent: 45% to 45% (v/v) supercritical CO2 in EtOH and H2O with 0.1% NH3). MS (ESI): mass calcd. for C ₂₃ H ₂₆ N ₄ O ₃ , 406.2; m/z found, 407.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) : 11.11 (s, 1H), 8.56 (d, J = 7.6 Hz, 1H), 8.36 (s, 1H), 7.82 (s, 1H), 7.35 (s, 1H), 7.08 - 7.01 (m, 1H), 6.89 (s, 1H), 4.69 (d, J = 4.4 Hz, 1H), 4.40 - 4.23 (m, 1H), 3.51 - 3.45 (m, 1H), 2.46 (s, 3H), 2.27 - 2.19 (m, 1H), 2.01 - 1.88 (m, 2H), 1.80 - 1.62 (m, 2H), 1.27 - 1.13 (m, 3H), 1.10 - 0.96 (m, 1H), 0.89 - 0.77 (m, 4H). Example 603: (*S)-N-[5-[5-(2-cyclopropyl-2-hydroxy-propoxy)-2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 539 The title compound was prepared using methods analogous to those described in Exam DAICEL CHIRALPAK AD (250 mm x 30 mm, 10 um), c OH with 0.1% NH ₃ -H ₂ O in supercritical CO ₂ ). MS (ESI) m/z found, 407.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMS Hz, 1H), 8.32 (s, 1H), 7.95 - 7.90 (m, 1H), 7.37 (s, 1H), 7 1H), 4.39 (s, 1H), 3.97 - 3.90 (m, 2H), 2.47 (s, 3H), 1.98 - 7 (m, 1H), 0.85 - 0.80 (m, 4H), 0.43 - 0.35 (m, 1H), 0.34 - 0.27 (m, 1H), 0.25 - 0.15 (m, 2H). Example 604: (*R)-N-[5-[5-[(1,2-dimethylazetidin-2-yl)methoxy]-2-methyl-4 - pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. The title compound was prepared using methods analogous to those described in Exampl ₂₃ H ₂₇ N ₅ O ₂ , 405.2; m/z found, 406.2 [M+H] ⁺ . ¹ H NMR (400 MH 23 (m, 2H), 7.70 (d, J = 0.8 Hz, 1H), 7.16 (s, 1H), 6.98 (s, 4.00 - 3.91 (m, 2H), 3.37 - 3.30 (m, 1H), 3.04 - 2.96 (m, 1H) 1.80 - 1.75 (m, 1H), 1.60 - 1.52 (m, 1H), 1.24 (s, 3H), 1.18 - 1. 540

Example 605: N-[5-[5-[[(2S)-1-ethylazetidin-2-yl]methoxy]-2-methyl-4-pyri dyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. as prepared using methods analogous to those described in Example 451. MS (ESI): mass calcd. for C ₂₃ H ₂₇ N ₅ O ₂ , 405.2; m/z found, 406.3 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.53 (s, 1H), 8.30 - 8.22 (m, 2H), 7.70 (s, 1H), 7.16 (s, 1H), 6.99 (s, 1H), 6.96 (dd, J = 1.6, 7.2 Hz, 1H), 4.17 - 4.03 (m, 2H), 3.47 - 3.34 (m, 2H), 2.82 - 2.73 (m, 1H), 2.67 - 2.57 (m, 1H), 2.55 (s, 3H), 2.36 - 2.26 (m, 1H), 2.11 - 1.95 (m, 2H), 1.63 - 1.52 (m, 1H), 1.19 - 1.12 (m, 2H), 0.95 - 0.86 (m, 5H). Example 606: (3S,5S)-5-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo [1,5-a]pyridin-5- yl]-6-methyl-3-pyridyl]oxymethyl]tetrahydrofuran-3-ol. s prepared using a similar method described in Example 203. MS (ESI): mass calcd. for C ₂₄ H ₂₆ N ₆ O ₃ , 446.2; m/z found, 447.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.20 (s, 1H), 8.57 (d, J = 7.2 Hz, 1H), 8.34 (s, 1H), 7.88 (d, J = 1.2 Hz, 1H), 7.37 (s, 1H), 7.08 (dd, J = 2.0, 7.2 Hz, 1H), 7.01 (s, 1H), 6.86 (s, 1H), 4.95 (d, J = 3.6 Hz, 1H), 4.34 - 4.28 (m, 1H), 4.23 - 4.14 (m, 3H), 3.71 - 3.66 (m, 1H), 3.64 - 3.59 (m, 1H), 2.47 (s, 3H), 2.46 (s, 3H), 2.30 (s, 3H), 2.23 - 2.13 (m, 1H), 1.70 - 1.57 (m, 1H). 541 Example 607: (*R)-N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-(7-oxaspir o[3.4]octan-6- ylmethoxy)-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. repared using a similar method described in Example 203. Purified by SFC-11 over DAICEL CHIRALPAK AD 250 mm x 30 mm x 10 µm (eluent: 45% to 45% (v/v) EtOH with 0.1% NH3-H2O in supercritical CO2). MS (ESI): mass calcd. for C27H30N6O2, 470.2; m/z found, 471.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.37 (d, J = 6.8 Hz, 1H), 8.27 (s, 1H), 7.68 (d, J = 0.8 Hz, 1H), 7.50 (s, 1H), 7.18 (s, 1H), 7.06 (s, 1H), 6.99 (dd, J = 2.0, 7.2 Hz, 1H), 6.57 (s, 1H), 4.31 - 4.22 (m, 1H), 4.13 - 4.04 (m, 2H), 3.81 - 3.76 (m, 1H), 3.74 - 3.69 (m, 1H), 2.60 (s, 3H), 2.56 (s, 3H), 2.45 (s, 3H), 2.11 - 2.04 (m, 1H), 2.04 - 1.93 (m, 4H), 1.93 - 1.78 (m, 3H). Example 608: (*S)-3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxymethyl]tetrahydropyran-3-ol. mg, 37%) was prepared as in Example 216 and is the the other isomer from the SFC purification. MS (ESI): mass calcd. for C25H28N6O3, 460.2; m/z found, 461.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.30 (d, J = 7.2 Hz, 1H), 8.28 (s, 1H), 7.58 (d, J = 0.8 Hz, 1H), 7.56 (s, 1H), 7.16 (s, 1H), 7.02 (s, 1H), 6.85 (dd, J = 2.0, 7.2 Hz, 1H), 6.57 (s, 1H), 4.11 - 4.06 (m, 1H), 4.06 - 4.01 (m, 1H), 3.81 - 3.73 (m, 1H), 3.68 - 3.61 (m, 2H), 3.61 - 3.53 (m, 542

1H), 3.03 (br. s., 1H), 2.56 (s, 3H), 2.56 (s, 3H), 2.44 (s, 3H), 1.96 - 1.86 (m, 1H), 1.81 - 1.70 (m, 2H), 1.61 - 1.54 (m, 1H). Example 609: (3S,5R)-5-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo [1,5-a]pyridin-5- yl]-6-methyl-3-pyridyl]oxymethyl]tetrahydrofuran-3-ol. s prepared using a similar method described in Example 203. MS (ESI): mass calcd. for C24H26N6O3, 446.2; m/z found, 447.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.30 - 8.26 (m, 2H), 7.63 (s, 1H), 7.60 (d, J = 1.2 Hz, 1H), 7.17 - 7.13 (m, 2H), 6.95 (dd, J = 2.0, 7.2 Hz, 1H), 6.48 (s, 1H), 4.63 - 4.55 (m, 1H), 4.53 - 4.48 (m, 1H), 4.22 - 4.17 (m, 1H), 4.16 - 4.10 (m, 1H), 3.96 - 3.91 (m, 1H), 3.84 - 3.79 (m, 1H), 2.60 (s, 3H), 2.55 (s, 3H), 2.46 (s, 3H), 2.38 (br. s., 1H), 2.10 - 2.02 (m, 1H), 2.01 - 1.91 (m, 1H). Example 610: (*S)-N-(2,6-dimethylpyrimidin-4-yl)-5-[5-(1,1-dioxothiazinan -4-yl)oxy-2- methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. s prepared using a similar method described in Example 203. Purified by SFC with a DAICEL CHIRALPAK AS (250 mm x 30 mm, 10 um) column (eluent: 35% to 25% (v/v) EtOH with 0.1% NH3-H2O in supercritical CO2). MS (ESI): mass calcd. for 543

C23H25N7O3S, 479.2; m/z found, 480.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.23 (s, 1H), 8.59 (d, J = 7.2 Hz, 1H), 8.42 (s, 1H), 7.88 (s, 1H), 7.39 (s, 1H), 7.20 (t, J = 6.4 Hz, 1H), 7.09 (dd, J = 2.0, 7.2 Hz, 1H), 7.03 (br. s., 1H), 6.89 (br. s., 1H), 4.54 - 4.39 (m, 1H), 3.57 - 3.41 (m, 2H), 3.19 - 2.98 (m, 2H), 2.48 (s, 3H), 2.46 (s, 3H), 2.37 - 2.24 (m, 4H), 2.23 - 2.12 (m, 1H). Example 611: 5-[2-methyl-5-[[(2R)-4-methylmorpholin-2-yl]methoxy]-4-pyrid yl]-N-pyrazin-2- yl-pyrazolo[1,5-a]pyridin-2-amine. was prepared using a similar method described in Example 251, followed by a reductive amination step similar to that described in Example 449. MS (ESI): mass calcd. for C ₂₃ H ₂₅ N ₇ O ₂ , 431.2; m/z found, 432.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) d 10.26 (s, 1H), 8.65 (d, J = 1.5 Hz, 1H), 8.60 (d, J = 7.2 Hz, 1H), 8.34 (s, 1H), 8.21 (dd, J = 2.8, 1.5 Hz, 1H), 8.01 (d, J = 2.7 Hz, 1H), 7.87 (dd, J = 2.1, 0.9 Hz, 1H), 7.36 (s, 1H), 7.04 (dd, J = 7.2, 2.0 Hz, 1H), 6.91 (d, J = 0.9 Hz, 1H), 4.18 – 4.10 (m, 2H), 3.83 – 3.71 (m, 2H), 3.56 – 3.46 (m, 1H), 2.76 – 2.69 (m, 1H), 2.61 – 2.55 (m, 1H), 2.47 (s, 3H), 2.15 (s, 3H), 2.01 – 1.92 (m, 1H), 1.92 – 1.85 (m, 1H). Example 612: 2-methyl-1-[[6-methyl-4-[2-[(6-methylpyridazin-3-yl)amino]py razolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]propan-2-ol. 544

was prepared using a similar method described in Example 200. MS (ESI): mass calcd. for C ₂₂ H ₂₄ N ₆ O ₂ , 404.2; m/z found, 405.20 [M+H] ⁺ . ¹ H NMR (400 MHz, Chloroform-d) d 9.81 (s, 1H), 8.28 - 8.21 (m, 1H), 8.12 (s, 1H), 7.80 (d, J = 9.1 Hz, 1H), 7.49 (dd, J = 2.0, 0.9 Hz, 1H), 7.10 (d, J = 9.1 Hz, 1H), 7.03 (s, 1H), 6.75 (dd, J = 7.2, 1.9 Hz, 1H), 6.62 (s, 1H), 3.83 (s, 2H), 3.39 (s, 0H), 3.26 (s, 1H), 2.50 (s, 3H), 2.42 (s, 3H), 1.23 (s, 6H). Example 613: 1-[[4-[2-[(5-tert-butylpyrazin-2-yl)amino]pyrazolo[1,5-a]pyr idin-5-yl]-6-methyl- 3-pyridyl]oxy]-2-methyl-propan-2-ol. s prepared using a similar method described in Example 200. MS (ESI): mass calcd. for C ₂₅ H ₃₀ N ₆ O ₂ , 446.2; m/z found, 447.20 [M+H] ⁺ . ¹ H NMR (400 MHz, Chloroform-d) d 8.64 (d, J = 1.5 Hz, 1H), 8.33 (dt, J = 7.2, 0.9 Hz, 1H), 8.30 - 8.24 (m, 2H), 8.11 (s, 1H), 7.58 (dd, J = 2.0, 0.9 Hz, 1H), 7.17 (s, 1H), 6.88 (dd, J = 7.2, 1.9 Hz, 1H), 6.69 (d, J = 0.8 Hz, 1H), 3.93 (s, 2H), 3.49 (s, 1H), 2.56 (s, 3H), 1.39 (s, 9H), 1.31 (s, 6H). Example 614: N-cyclopropyl-2,6-difluoro-4-[[5-[5-(4-hydroxycyclohexoxy)-2 -methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]benzamide. 545

pared using a similar method described in Example 246. MS (ESI): mass calcd. for C29H29F2N5O3, 533.2; m/z found, 534.3 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) d 9.64 (s, 1H), 8.64 (dt, J = 7.2, 0.9 Hz, 1H), 8.50 (d, J = 4.5 Hz, 1H), 8.35 (s, 1H), 7.72 (dd, J = 2.0, 0.9 Hz, 1H), 7.33 (s, 1H), 7.24 (d, J = 10.7 Hz, 2H), 6.95 (dd, J = 7.2, 2.0 Hz, 1H), 6.19 (d, J = 0.8 Hz, 1H), 4.51 (d, J = 3.9 Hz, 1H), 4.41 (dt, J = 8.9, 4.8 Hz, 1H), 3.49 (s, 1H), 2.81 (td, J = 7.4, 3.9 Hz, 1H), 2.45 (s, 3H), 1.95 (d, J = 5.4 Hz, 2H), 1.73 (d, J = 9.3 Hz, 2H), 1.46 – 1.35 (m, 2H), 1.33 – 1.22 (m, 2H), 0.69 (td, J = 7.1, 4.9 Hz, 2H), 0.52 – 0.45 (m, 2H). Example 615: N-cyclopropyl-2-fluoro-4-[[5-[5-(2-hydroxy-2-methyl-propoxy) -2-methyl-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]benzamide. epared using a similar method described in Example 200. MS (ESI): mass calcd. for C ₂₇ H ₂₈ FN ₅ O ₃ , 489.2; m/z found, 490.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) d 9.56 (s, 1H), 8.63 (d, J = 7.2 Hz, 1H), 8.31 (s, 1H), 7.93 (t, J = 3.8 Hz, 1H), 7.80 (d, J = 1.9 Hz, 1H), 7.63 – 7.50 (m, 2H), 7.36 (s, 1H), 7.19 (dd, J = 8.6, 2.1 Hz, 1H), 7.01 (dd, J = 7.2, 2.0 Hz, 1H), 6.16 (s, 1H), 4.62 (s, 1H), 3.87 (s, 2H), 2.81 (tq, J = 7.7, 4.0 Hz, 1H), 2.46 (s, 3H), 1.15 (s, 6H), 0.68 (td, J = 7.1, 4.6 Hz, 2H), 0.54 (dt, J = 7.1, 4.5 Hz, 2H). 546

Example 616: N-[5-[2-cyano-5-[[(3R)-1-ethylpyrrolidin-3-yl]methoxy]-4-pyr idyl]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. prepared using methods analogous to those described in Example 5. MS (ESI): mass calcd. for C ₂₄ H ₂₆ N ₆ O ₂ , 430.2; m/z found, 431.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.14 (s, 1H), 8.67 (s, 1H), 8.62 (d, J = 7.2 Hz, 1H), 8.19 (s, 1H), 7.94 (s, 1H), 7.10 (dd, J = 1.6, 7.2 Hz, 1H), 6.91 (s, 1H), 4.21 (d, J = 6.4 Hz, 2H), 2.59 - 2.56 (m, 1H), 2.46 - 2.41 (m, 2H), 2.39 - 2.30 (m, 3H), 2.03 - 1.86 (m, 3H), 1.59 - 1.40 (m, 1H), 0.98 (t, J = 7.2 Hz, 3H), 0.87 - 0.79 (m, 4H). Example 617: N-(6-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy )-2-methylpyridin- 4-yl)imidazo[1,2-a]pyridin-2-yl)cyclopropanecarboxamide. Step A: N-(6-bromoimidazo[1,2-a]pyridin-2-yl)cyclopropanecarboxamide : To a 0 °C solution of 6-bromoimidazo[1,2-a]pyridin-2-amine (1000 mg, 4.71 mmol) in DCM (20 mL), TEA (0.852 mL, 6.13 mmol) and cyclopropanecarbonyl chloride (591 mg, 5.66 mmol) were added. The solution was stirred for 2h. The mixture was concentrated. The mixture was triturated 547

with ether (100 mL), and solids were filtered and collected and dried providing the title compound (1.2 g, 91%). MS (ESI): mass calcd. for C11H10BrN3O, 279.00; m/z found, 280.0 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.63 (t, J = 1.4 Hz, 1H), 8.03 (s, 1H), 7.41 – 7.28 (m, 2H), 1.96 – 1.82 (m, 1H), 1.04 – 0.94 (m, 2H), 0.93 – 0.81 (m, 2H). Step B: N-(6-(5-fluoro-2-methylpyridin-4-yl)imidazo[1,2-a]pyridin-2- yl)cyclopropanecarboxamide. The solid mixture N-(6-bromoimidazo[1,2-a]pyridin-2- yl)cyclopropanecarboxamide (1.10 g, 3.93 mmol), 5-fluoro-2-methyl-4-(4,4,5,5-tetramethyl- 1,3,2-dioxaborolan-2-yl)pyridine [ (1.21 g, 5.10 mmol), and chloro(2-dicyclohexylphosphino- 2',6'-diisopropoxy-1,1'-biphenyl)[2-(2'-amino-1,1'-biphenyl) ]palladium(ii) (150 mg, 0.20 mmol) was evacuated and back-filled with N2 three times. Then 1,4-dioxane (1.4 mL) and tribasic potassium phosphate 0.5 M in water (11.8 mL, 0.5 M, 5.9 mmol) were added. The mixture was stirred at 90 °C for 2h. The crude was diluted with EtOAc (20 mL) and washed with H ₂ O (20 mL). The organic layers were combined, concentrated and purified with FFC (EtOAc:hexane) providing the title compound (510 mg, 41%). MS (ESI): mass calcd. for C ₁₇ H ₁₅ FN ₄ O, 310.12; m/z found, 311.0 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.80 (s, 1H), 8.40 (d, J = 2.8 Hz, 1H), 8.13 (s, 1H), 7.62 – 7.49 (m, 3H), 2.9 (s, 3H), 1.98 – 1.85 (m, 1H), 1.06 – 0.96 (m, 2H), 0.96 – 0.87 (m, 2H). Step C: N-(6-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy )-2-methylpyridin- 4-yl)imidazo[1,2-a]pyridin-2-yl)cyclopropanecarboxamide. The mixture of endo (1R,5S,7s)-3- oxa-9-azabicyclo[3.3.1]nonan-7-ol hydrochloride (123 mg, 0.638 mmol) and NaH (60% dispersion in mineral oil) (100 mg, 2.50 mmol) in HMPA (1 mL) was stirred at 80 °C for 10 min, N-(6-(5-fluoro-2-methylpyridin-4-yl)imidazo[1,2-a]pyridin-2- yl)cyclopropanecarboxamide (97. 0 mg, 0.312 mmol) was added. The mixture was stirred at 80 °C for 30 min. It was cooled down and water (2 mL) was added carefully. The mixture was extraction with DCM (2x 20 mL). The combined organics were concentrated and purified with (MeOH/DCM) providing the title compound (47 mg, 34.7%). MS (ESI): mass calcd. for C ₂₄ H ₂₇ N ₅ O ₃ , 433.2; m/z found, 434.1 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 9.22 (dd, J = 1.8, 0.9 Hz, 1H), 8.02 (s, 1H), 7.89 (s, 1H), 7.50 (dd, J = 9.4, 1.8 Hz, 1H), 7.38 – 7.27 (m, 2H), 4.70 – 4.61 (m, 1H), 3.82 – 3.76 (m, 2H), 3.69 – 3.60 (m, 2H), 2.86 (d, J = 6.8 Hz, 2H), 2.41 (s, 3H), 2.33 – 2.25 (m, 3H), 1.96 – 1.87 (m, 1H), 1.87 – 1.78 (m, 2H), 0.94 – 0.85 (m, 2H), 0.85 – 0.75 (m, 2H). 548

Example 618: N-(5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy )-2- (trifluoromethyl)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide. The title compound was prepared (150 mg, 34%) in the similar manner of Example 9. MS (ESI): mass calcd. for C ₂₄ H ₂₄ F ₃ N ₅ O ₃ , 487.2; m/z found, 488.0 [M+H] ⁺ . ¹ H NMR (600 MHz, Methanol-d4) δ 8.49 – 8.26 (m, 3H), 8.11 – 8.00 (m, 1H), 7.80 (s, 1H), 7.13 (d, J = 5.1 Hz, 1H), 4.95 (t, J = 5.7 Hz, 1H), 3.95 – 3.77 (m, 4H), 3.60 – 3.49 (m, 2H), 2.70 – 2.53 (m, 2H), 2.28 (d, J = 16.3 Hz, 2H), 1.85 – 1.75 (m, 1H), 0.94 – 0.75 (m, 4H). Example 619: N-(5-(5-(((1R,5S,7s)-9-methyl-3-oxa-9-azabicyclo[3.3.1]nonan -7-yl)oxy)-2- (trifluoromethyl)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cy clopropanecarboxamide. prepared using methods analogous to those described in Example 449. MS (ESI): mass calcd. for C25H26F3N5O3, 501.2; m/z found, 502.1 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.33 - 8.20 (m, 2H), 8.17 (d, J = 2.0 Hz, 1H), 7.75 (s, 1H), 7.13 549

(dd, J = 7.3, 2.0 Hz, 1H), 6.77 (s, 1H), 4.80 (t, J = 6.4 Hz, 2H), 3.87 - 3.76 (m, 2H), 3.55 (d, J = 11.2 Hz, 2H), 2.65 - 2.56 (m, 2H), 2.50 - 2.37 (m, 5H), 1.83 - 1.65 (m, 3H), 0.93 - 0.86 (m, 2H), 0.83 - 0.72 (m, 2H). Example 620: N-[5-[5-[(1-amino-3,3-difluoro-cyclobutyl)methoxy]-2-(triflu oromethyl)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. prepared using methods analogous to those described in Example 136. MS (ESI): mass calcd. for C ₂₂ H ₂₀ F ₅ N ₅ O ₂ , 481.2; m/z found, 482.0 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.58 (s, 1H), 8.50 – 8.40 (m, 1H), 7.87 (s, 1H), 7.82 (dd, J = 2.1, 0.9 Hz, 1H), 7.06 (dd, J = 7.2, 2.0 Hz, 1H), 6.94 (s, 1H), 4.25 (s, 2H), 2.89 – 2.71 (m, 2H), 2.59 – 2.39 (m, 2H), 1.95 – 1.75 (m, 1H), 1.06 – 0.95 (m, 2H), 0.95 – 0.80 (m, 2H). Example 621: N-[5-[5-[(3-fluoroazetidin-3-yl)methoxy]-2-(trifluoromethyl) -4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. The title compound was prepared using methods analogous to those described in Example 9. MS (ESI): mass calcd. for C21H19F4N5O2, 449.1; m/z found, 450.0 [M+H] ⁺ . ¹ H NMR 550

(500 MHz, Methanol-d4) δ 8.62 (s, 1H), 8.48 – 8.36 (m, 1H), 7.90 (s, 1H), 7.83 (dd, J = 2.1, 0.9 Hz, 1H), 7.06 (dd, J = 7.3, 2.0 Hz, 1H), 6.93 (s, 1H), 4.64 (d, J = 22.5 Hz, 2H), 3.86 – 3.72 (m, 2H), 3.72 – 3.54 (m, 2H), 2.01 – 1.81 (m, 1H), 1.00 (dt, J = 4.6, 3.2 Hz, 2H), 0.95 – 0.80 (m, 2H). Example 622: N-[5-[5-[(3-methoxyazetidin-3-yl)methoxy]-2-(trifluoromethyl )-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. The title compound was prepared using methods analogous to those described in Example 9. MS (ESI): mass calcd. for C ₂₂ H ₂₂ F ₃ N ₅ O ₃ , 461.2; m/z found, 462.1 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.62 (s, 1H), 8.48 – 8.36 (m, 1H), 7.90 (s, 1H), 7.83 (dd, J = 2.1, 0.9 Hz, 1H), 7.06 (dd, J = 7.3, 2.0 Hz, 1H), 6.93 (s, 1H), 4.64-4.50 (m, 2H), 3.78 – 3.65 (m, 2H), 3.52 – 3.34 (m, 2H), 3.27(s, 3H), 2.01 – 1.81 (m, 1H), 1.05-0.95 (m, 2H), 0.95 – 0.80 (m, 2H). Example 623: 1-fluoro-N-[5-[2-methyl-5-[[(2R)-1-methylazetidin-2-yl]metho xy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 51

Step A; (R)-5-(2-methyl-5-((1-methylazetidin-2-yl)methoxy)pyridin-4- yl)pyrazolo[1,5- a]pyridin-2-amine. The crude title compound was prepared (450 mg, 28%) in the similar manner of Intermediate 13 while (R)-(1-methylazetidin-2-yl)methanol was used instead of tert-butyl (S)- 2-(hydroxymethyl)morpholine-4-carboxylate. MS (ESI): mass calcd. for C ₁₈ H ₂₁ N ₅ O, 324.1; m/z found, 323.1 [M+H] ⁺ . Step B: The mixture of (R)-5-(2-methyl-5-((1-methylazetidin-2-yl)methoxy)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-amine(126 mg, 0.39 mmol), 1-fluorocyclopropane-1-carboxylic acid (41 mg, 0.39 mmol), HATU (148 mg, 0.39 mmol) and Et3N(0.16 mL, 1.17 mmol) in DCM (10 mL) was stirred at RT for 8h. NaHCO3 saturated solution (5 mL) was added. After separation, the organic layer was washed by NaOH solution (1M, 5 mL), concentrated and purified by column chromatography on silica (10% MeOH/DCM) providing the title compound (61 mg, 15%) MS (ESI): mass calcd. for C22H24FN5O2, 409.2; m/z found, 410.1 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.46 (dd, J = 7.2, 1.0 Hz, 1H), 8.24 (s, 1H), 7.82 (dd, J = 2.0, 0.9 Hz, 1H), 7.36 (s, 1H), 7.07 (dd, J = 7.2, 2.0 Hz, 1H), 6.94 (d, J = 0.8 Hz, 1H), 4.27 – 4.05 (m, 2H), 3.65 – 3.53 (m, 1H), 3.48 – 3.36 (m, 1H), 3.09 – 2.92 (m, 1H), 2.52 (s, 3H), 2.29 (s, 3H), 2.16 – 2.01 (m, 2H), 1.58 – 1.29 (m, 4H). Example 624: 2,2-difluoro-N-[5-[2-methyl-5-[[(2R)-1-methylazetidin-2-yl]m ethoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. prepared (55 mg, 41%) in the similar manner of Example 623 while 2,2-difluorocyclopropane-1-carboxylic acid was used instead of 1-fluorocyclopropane-1- carboxylic acid in Step B. MS (ESI): mass calcd. for C ₂₂ H ₂₃ F ₂ N ₅ O ₂ , 427.2; m/z found, 428.1 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.48 – 8.36 (m, 1H), 8.22 (s, 1H), 7.79 (dd, J = 552

2.0, 0.9 Hz, 1H), 7.33 (s, 1H), 7.04 (dd, J = 7.2, 2.0 Hz, 1H), 6.92 (d, J = 0.9 Hz, 1H), 4.25 – 4.05 (m, 2H), 3.55 – 3.43 (m, 1H), 3.43 – 3.34 (m, 1H), 3.00 – 2.73 (m, 2H), 2.51 (s, 3H), 2.24 (s, 3H), 2.17 – 1.97 (m, 3H), 1.96 – 1.78 (m, 1H). Example 625: N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[[(2R)-1-methylazetidin- 2-yl]methoxy]-2- (trifluoromethyl)-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. repared using methods analogous to those described in Example 251. MS (ESI): mass calcd. for C ₂₄ H ₂₄ F ₃ N ₇ O, 483.2; m/z found, 484.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.54 (s, 1H), 8.46 (dd, J = 7.3, 1.0 Hz, 1H), 7.91 – 7.75 (m, 2H), 7.11 – 6.98 (m, 2H), 6.88 (s, 1H), 4.40 – 4.21 (m, 2H), 3.62 – 3.49 (m, 1H), 3.46 – 3.38 (m, 1H), 2.98 – 2.89 (m, 1H), 2.52 (s, 3H), 2.37 (s, 3H), 2.26 (s, 3H), 2.17 – 1.97 (m, 2H). Example 626: N-cyclopropyl-4-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl -4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-2,6-dimethoxy-ben zamide. 53

The title compound was prepared (39 mg, 27%) by the similar method of Example 245 while Intermediate 20 was used instead of Intermediate 12. MS (ESI): mass calcd. for C ₂₉ H ₃₃ N ₅ O ₅ , 531.2; m/z found, [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.44 – 8.35 (m, 1H), 8.22 (s, 1H), 7.71 (dd, J = 2.0, 0.9 Hz, 1H), 7.37 (s, 1H), 6.99 (dd, J = 7.2, 2.0 Hz, 1H), 6.83 (s, 2H), 6.17 (s, 1H), 3.92 (s, 2H), 3.82 (s, 6H), 2.87 – 2.72 (m, 1H), 2.53 (s, 3H), 1.26 (s, 6H), 0.84 – 0.73 (m, 2H), 0.62 – 0.54 (m, 2H). Example 627: 1-((1R,5S,7s)-7-((4-(2-((2,6-dimethylpyrimidin-4-yl)amino)py razolo[1,5- a]pyridin-5-yl)-6-methylpyridin-3-yl)oxy)-3-oxa-9-azabicyclo [3.3.1]nonan-9-yl)ethan-1-one. (((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2- methylpyridin-4-yl)-N-(2,6-dimethylpyrimidin-4-yl)pyrazolo[1 ,5-a]pyridin-2-amine (Example 382; 225 mg, 0.465 mmol) in DCM/DMF(10 mL/1 mL) at 0 °C, acetic acid (33.4 mg, 0.538 mmol), HATU (230 mg, 0.604 mmol) and Et3N(0.19 mL, 1.39 mmol) were added. The mixture was stirred at RT for 2h. NaHCO3 saturated solution (1 mL) was added. The mixture was extracted with DCM (2 x 2 mL). After separation, the organic layers were combined, concentrated and purified by column chromatography on silica (10% MeOH/DCM) providing the title compound (236 mg, 99%). MS (ESI): mass calcd. for C28H31N7O3, 513.2; m/z found, 514.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.26 (dd, J = 7.3, 1.0 Hz, 1H), 8.01 (s, 1H), 7.90 (s, 1H), 7.24 (s, 1H), 7.02 (dd, J = 7.2, 2.0 Hz, 1H), 6.90 (s, 1H), 6.68 (s, 1H), 4.50 – 4.34 (m, 2H), 3.94 – 3.88 (m, 1H), 3.71 – 3.64 (m, 2H), 3.56 (dd, J = 11.3, 2.7 Hz, 1H), 3.47 (dd, J = 11.3, 2.8 Hz, 1H), 2.40 (d, J = 3.9 Hz, 6H), 2.32 – 2.22 (m, 4H), 2.22 – 2.11 (m, 1H), 2.01 – 1.83 (m, 5H). 554 Example 628: 1-[(2S)-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo [1,5-a]pyridin-5- yl]-6-methyl-3-pyridyl]oxymethyl]morpholin-4-yl]ethanone. s prepared (61 mg, 100%) by the similar method of Example 627 while N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[[(2S)-morpholi n-2-yl]methoxy]-4- pyridyl]pyrazolo[1,5-a]pyridin-2-amine (Example 432) was used instead of 5-(5-(((1R,5S,7s)-3- oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2-methylpyridin-4-yl) -N-(2,6-dimethylpyrimidin-4- yl)pyrazolo[1,5-a]pyridin-2-amine (Example 382). MS (ESI): mass calcd. for C ₂₆ H ₂₉ N ₇ O ₃ , 487.2; m/z found, 488.1 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.24 (t, J = 7.5 Hz, 1H), 8.04 (d, J = 9.9 Hz, 1H), 7.65 – 7.56 (m, 1H), 7.14 (d, J = 4.1 Hz, 1H), 6.91 – 6.79 (m, 2H), 6.71 – 6.51 (m, 1H), 4.40 – 4.14 (m, 1H), 4.09 – 3.97 (m, 2H), 3.88 – 3.80 (m, 1H), 3.73 – 3.52 (m, 2H), 3.52 – 3.33 (m, 1H), 3.17 – 2.97 (m, 1H), 2.72 – 2.54 (m, 1H), 2.43 – 2.34 (m, 6H), 2.23 (s, 3H), 1.97-1.88 (s, 3H) Example 629: N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[[(2S)-4- methylsulfonylmorpholin-2-yl]methoxy]-4-pyridyl]pyrazolo[1,5 -a]pyridin-2-amine. N _N HN

To the mixture of N-(2,6-dimethylpyrimidin-4-yl)-5-[2-methyl-5-[[(2S)-morpholi n-2- yl]methoxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine (Example 432, 50 mg, 0.112 mmol) in DCM/DMF(10 mL/1 mL) at 0 °C, methylsulfonyl chloride (15 mg, 0.135 mmol), and Et ₃ N(0.047 mL, 0.34 mmol) were added. The mixture was stirred at RT for 2h. NaHCO ₃ saturated solution (1 mL) was added. The mixture was extracted with DCM (2 x 2 mL). After separation, the organic layers were combined, concentrated and purified by column chromatography on silica (10% MeOH/DCM) providing the title compound (17 mg, 27%). MS (ESI): mass calcd. for C25H29N7O4S, 523.2; m/z found, 524.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.37 (dd, J = 7.2, 0.9 Hz, 1H), 8.16 (s, 1H), 7.72 (dd, J = 2.0, 0.9 Hz, 1H), 7.29 (s, 1H), 6.98 – 6.90 (m, 2H), 6.81 (s, 1H), 4.15 (d, J = 4.8 Hz, 2H), 4.05 – 3.96 (m, 1H), 3.87 – 3.79 (m, 1H), 3.68 – 3.58 (m, 2H), 3.50 – 3.40 (m, 1H), 2.89 – 2.77 (m, 1H), 2.77 – 2.73 (m, 4H), 2.53 – 2.47 (two S, 6H), 2.34 (s, 3H). Example 630: (S)-5-(2-methyl-5-((4-(methylsulfonyl)morpholin-2-yl)methoxy )pyridin-4-yl)-N- (2-methylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. s prepared using methods analogous to those described in Example 361. MS (ESI): mass calcd. for C26H29N7O4S, 535.2; m/z found, 536.1 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.41 (d, J = 7.1 Hz, 1H), 8.24 – 8.15 (m, 2H), 8.04 (d, J = 2.0 Hz, 1H), 7.41 (d, J = 1.4 Hz, 1H), 7.21 – 7.15 (m, 1H), 6.87 (s, 1H), 4.65 (dd, J = 6.0, 4.3 Hz, 2H), 3.93 (d, J = 7.4 Hz, 2H), 3.79 – 3.70 (m, 4H), 3.00 (s, 3H), 2.62 – 2.41 (m, 8H), 2.03 – 1.88 (m, 2H). 556

Example 631: 2-((5-(5-(((1R,5S,7s)-9-acetyl-3-oxa-9-azabicyclo[3.3.1]nona n-7-yl)oxy)-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-N-meth ylisonicotinamide. was prepared (82 mg, 94%) by the similar method of Example 627 while 2-((5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)ox y)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-N-methylisonicotinamid e (Example 172) was used instead of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4-yl)-N- (2,6-dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine (Example 382). MS (ESI): mass calcd. for C ₂₉ H ₃₁ N ₇ O ₄ , 541.2; m/z found, 542.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol- d4) δ 8.31 – 8.23 (m, 1H), 8.18 (dd, J = 5.3, 0.8 Hz, 1H), 8.02 (s, 1H), 7.89 (dd, J = 2.0, 0.9 Hz, 1H), 7.64 – 7.55 (m, 1H), 7.26 (s, 1H), 7.04 – 6.94 (m, 2H), 6.60 (d, J = 0.9 Hz, 1H), 4.46 – 4.37 (m, 2H), 3.90 (d, J = 7.0 Hz, 1H), 3.73 – 3.65 (m, 2H), 3.60 – 3.53 (m, 1H), 3.52 – 3.45 (m, 1H), 3.10 (q, J = 7.3 Hz, 1H), 2.84 (s, 3H), 2.41 (s, 3H), 2.33 – 2.21 (m, 1H), 2.21 – 2.12 (m, 1H), 2.01 – 1.83 (m, 5H). Example 632: 1-((1R,5S,7s)-7-((6-methyl-4-(2-((4-(trifluoromethyl)pyridin -2- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)pyridin-3-yl)oxy)-3-oxa -9-azabicyclo[3.3.1]nonan-9- yl)ethan-1-one. 557

was prepared (15 mg, 61%) by the similar method of Example 627 while 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4-yl)-N-(4- (trifluoromethyl)pyridin-2-yl)pyrazolo[1,5-a]pyridin-2-amine (Example 378) was used instead of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4-yl)-N-(2,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine (Example 382). MS (ESI): mass calcd. for C ₂₈ H ₂₇ F ₃ N ₆ O ₃ , 552.2; m/z found, 553.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.34 – 8.22 (m, 2H), 8.03 (s, 1H), 7.90 (dd, J = 2.0, 0.9 Hz, 1H), 7.61 – 7.54 (m, 1H), 7.26 (s, 1H), 7.01 (dd, J = 7.2, 2.0 Hz, 1H), 6.91 (dd, J = 5.4, 1.5 Hz, 1H), 6.63 (d, J = 0.8 Hz, 1H), 4.51 – 4.35 (m, 2H), 3.96 – 3.84 (m, 1H), 3.72 – 3.65 (m, 2H), 3.61 – 3.52 (m, 1H), 3.52 – 3.45 (m, 1H), 2.41 (s, 3H), 2.35 – 2.23 (m, 1H), 2.23 – 2.12 (m, 1H), 2.03 – 1.86 (m, 5H). Example 633: 2-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]amino]-N,N,6-trimethyl-pyridine-4-carboxamide . The title compound was prepared (60 mg, 39%) by the similar method of Example 244 while 2-chloro-6-methylpyridine-4-carboxylic acid , and isopropyl amine were used instead of 6- chloro-4-methylpicolinic acid and dimethyl amine. MS (ESI): mass calcd. for C ₂₆ H ₃₀ N ₆ O ₃ , 474.2; m/z found, 475.1 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.34 – 8.21 (m, 1H), 8.10 558

(s, 1H), 7.63 (dd, J = 1.9, 0.9 Hz, 1H), 7.23 (s, 1H), 7.12 (t, J = 1.0 Hz, 1H), 6.89 (dd, J = 7.2, 2.0 Hz, 1H), 6.65 (d, J = 0.8 Hz, 1H), 6.62 – 6.52 (m, 1H), 3.81 (s, 2H), 2.99 (s, 3H), 2.90 (s, 3H), 2.44 – 2.30 (two s, 6H), 2.04 (s, 2H), 1.15 (s, 6H). Example 634: 2-((5-(5-(((1R,5S,7s)-9-(cyclopropanecarbonyl)-3-oxa-9-azabi cyclo[3.3.1]nonan- 7-yl)oxy)-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)a mino)-N-methylisonicotinamide. was prepared (40 mg, 88%) by the similar method of Example 627 while 2-((5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)ox y)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-N-methylisonicotinamid e (Example 172) and cyclopropanecarboxylic acid were used instead of 5-(5-(((1R,5S,7s)-3-oxa-9- azabicyclo[3.3.1]nonan-7-yl)oxy)-2-methylpyridin-4-yl)-N-(2, 6-dimethylpyrimidin-4- yl)pyrazolo[1,5-a]pyridin-2-amine and acetic acid. MS (ESI): mass calcd. for C31H33N7O4, 567.3; m/z found, 568.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.26 (dd, J = 7.2, 1.0 Hz, 1H), 8.18 (dd, J = 5.2, 0.8 Hz, 1H), 8.00 (s, 1H), 7.87 (dd, J = 2.0, 0.9 Hz, 1H), 7.60 (t, J = 1.1 Hz, 1H), 7.25 (s, 1H), 7.03 – 6.96 (m, 2H), 6.60 (d, J = 0.8 Hz, 1H), 4.44 – 4.32 (m, 2H), 4.29 (d, J = 7.3 Hz, 1H), 3.75 – 3.61 (m, 2H), 3.58 (dd, J = 11.3, 2.7 Hz, 1H), 3.47 (dd, J = 11.4, 2.8 Hz, 1H), 2.83 (s, 3H), 2.40 (s, 3H), 2.34 – 2.22 (m, 1H), 2.22 – 2.10 (m, 1H), 2.02 – 1.86 (m, 2H), 1.86 – 1.73 (m, 1H), 0.84 – 0.59 (m, 4H). Example 635: 2-((5-(5-(((1R,5S,7s)-9-(cyclopropylsulfonyl)-3-oxa-9-azabic yclo[3.3.1]nonan-7- yl)oxy)-2-methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)ami no)-N-methylisonicotinamide. 559

f 2-((5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)ox y)-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-N-meth ylisonicotinamide (Example 172, 40 mg, 0.08 mmol) in DCM/DMF (1 mL/0.2 mL) was added triethylamine (0.03 mL, 0.24 mmol). While stirring, added cyclopropanesulfonyl chloride (27 mg, 0.19 mmol) and stirred for 16 hr. Worked-up in DCM/sat’d NaHCO3 and purified via FCC (10% MeOH/DCM) to give the title compound (40 mg, 82%). (MS (ESI): mass calcd. for C ₃₀ H ₃₃ N ₇ O ₅ S, 603.2; m/z found, 604.2 [M+H] ⁺ . ¹ H NMR (400 MHz, Chloroform-d) δ 8.33 – 8.28 (m, 1H), 8.13 (s, 1H), 7.79 – 7.67 (m, 2H), 7.58 (s, 1H), 7.13 (s, 1H), 7.04 – 6.91 (m, 2H), 6.47 (d, J = 0.8 Hz, 1H), 6.38 (d, J = 4.8 Hz, 1H), 4.56 – 4.41 (m, 1H), 3.81 (d, J = 7.2 Hz, 2H), 3.76 – 3.62 (m, 4H), 2.96 (d, J = 4.3 Hz, 3H), 2.48 (s, 2H), 2.47 – 2.37 (m, 3H), 2.33 – 2.21 (m, 1H), 1.97 – 1.87 (m, 2H), 1.12 – 1.05 (m, 2H), 0.96 – 0.88 (m, 2H). Example 636: N-cyclopropyl-2-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl -4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-6-methyl-pyridine -4-carboxamide. s prepared (12 mg, 15%) by the similar method of Example 244 while 2-chloro-6-methylpyridine-4-carboxylic acid and cyclopropylamine were used instead of 6-chloro-4-methylpicolinic acid and dimethylamine. MS (ESI): mass calcd. for C27H30N6O3, 486.2; m/z found, 487.1 [M+H] ⁺ . ¹ H NMR (400 MHz, Methanol-d4) δ 8.36 – 8.27 (m, 1H), 8.13 (s, 1H), 7.68 (dd, J = 2.0, 0.9 Hz, 1H), 7.37 (dd, J = 1.4, 0.7 Hz, 1H), 7.29 (s, 1H), 6.95 (dd, J = 560

7.2, 1.9 Hz, 1H), 6.87 (dd, J = 1.3, 0.6 Hz, 1H), 6.71 (d, J = 0.8 Hz, 1H), 3.83 (s, 2H), 2.83 – 2.70 (m, 1H), 2.48 – 2.37 (2 s, 6H), 1.17 (s, 6H), 0.81 – 0.66 (m, 2H), 0.65 – 0.49 (m, 2H). Example 637: 6-((5-(5-(((1R,5S,7s)-9-acetyl-3-oxa-9-azabicyclo[3.3.1]nona n-7-yl)oxy)-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-2-meth ylpyridazin-3(2H)-one. s prepared (39 mg, 94%) by the similar method of Example 627 while 6-((5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)ox y)-2-methylpyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-2-methylpyridazin-3(2H )-one (Example 401) was used instead of 5-(5-(((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl)oxy)-2 -methylpyridin-4-yl)-N- (2,6-dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine (Example 382). MS (ESI): mass calcd. for C ₂₇ H ₂₉ N ₇ O ₄ , 515.2; m/z found, 516.2 [M+H] ⁺ . ¹ H NMR (400 MHz, Methanol- d4) δ 8.30 – 8.20 (m, 1H), 8.05 (s, 1H), 7.93 (dd, J = 2.0, 0.9 Hz, 1H), 7.36 – 7.26 (m, 2H), 7.05 (dd, J = 7.3, 2.0 Hz, 1H), 6.83 (d, J = 9.7 Hz, 1H), 6.74 (d, J = 0.9 Hz, 1H), 4.52 – 4.39 (m, 2H), 3.93 (d, J = 7.2 Hz, 1H), 3.74 – 3.67 (m, 2H), 3.64 (s, 3H), 3.62 – 3.43 (m, 2H), 2.42 (s, 3H), 2.35 – 2.15 (m, 2H), 1.99 (s, 3H), 1.96 – 1.88 (m, 1H). Example 638: N-cyclopropyl-6-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl -4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-4-methyl-pyridine -2-carboxamide. 561

p s prepared (45 mg, 29%) by the similar method of Example 244 while cyclopropylamine was used instead of dimethylamine. MS (ESI): mass calcd. for C27H30N6O3, 486.2; m/z found, 487.1 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.30 (dt, J = 7.2, 0.9 Hz, 1H), 8.11 (s, 1H), 7.65 (dd, J = 2.0, 0.9 Hz, 1H), 7.39 – 7.18 (m, 3H), 6.91 (dd, J = 7.2, 2.0 Hz, 1H), 6.39 (d, J = 0.8 Hz, 1H), 3.82 (s, 2H), 2.77 (tt, J = 7.3, 3.9 Hz, 1H), 2.42 (s, 3H), 2.27 (t, J = 0.7 Hz, 3H), 1.17 (s, 6H), 0.83 – 0.67 (m, 2H), 0.63 – 0.49 (m, 2H). Example 639: N-cyclopropyl-6-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl -4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]pyridine-3-carboxa mide. s prepared (35 mg, 23%) by the similar method of Example 246 while 6-bromo-n-cyclopropylnicotinamide and Intermediate 20 were used instead of methyl 4- bromo-2-methoxybenzoate and Intermediate 12. MS (ESI): mass calcd. for C26H28N6O3, 472.2; m/z found, 487.1 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.69 (dd, J = 2.4, 0.8 Hz, 1H), 8.51 – 8.39 (m, 1H), 8.24 (s, 1H), 8.04 (dd, J = 8.8, 2.5 Hz, 1H), 7.81 (dd, J = 2.0, 0.9 Hz, 1H), 7.44 – 7.32 (m, 2H), 7.07 (dd, J = 7.2, 2.0 Hz, 1H), 6.83 (d, J = 0.9 Hz, 1H), 3.95 (s, 2H), 2.91 – 2.83 (m, 1H), 2.55 (s, 3H), 1.28 (s, 6H), 0.88 – 0.77 (m, 2H), 0.70 – 0.59 (m, 2H). 562

Example 640: N-cyclopropyl-4-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl -4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-6-methyl-pyrimidi ne-2-carboxamide. ared (52 mg, 55%) by the similar method of Example 241 while methyl 4-chloro-6-methylpyrimidine-2-carboxylate, Intermediate 20 and cyclopropylamine were used instead of methyl 4-bromo-2,6-dimethoxybenzoate, Intermediate 12 and 2,2,2-trifluoroethan-1-amine. MS (ESI): mass calcd. for C ₂₆ H ₂₉ N ₇ O ₃ , 487.2; m/z found, 488.3 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.31 (d, J = 7.2 Hz, 1H), 8.09 (s, 1H), 7.65 (dd, J = 2.0, 0.9 Hz, 1H), 7.40 – 7.28 (m, 1H), 7.21 (s, 1H), 6.94 (dd, J = 7.2, 2.0 Hz, 1H), 6.49 (s, 1H), 3.82 (s, 2H), 2.85 – 2.70 (m, 1H), 2.37 (d, J = 28.3 Hz, 6H), 1.16 (s, 6H), 0.80 – 0.71 (m, 2H), 0.63 – 0.54 (m, 2H). Example 641: 3-[[6-(difluoromethoxy)-4-[2-[(2-methylpyrimidin-5-yl)amino] pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. s prepared using a similar method described in Example 682, except tBuXPhos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C ₂₃ H ₂₁ F ₂ N ₇ O ₂ , 465.2; m/z found, 466.1 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 9.29 (s, 1H), 8.92 (s, 2H), 8.62 (dd, J = 7.2, 0.9 Hz, 1H), 8.14 (s, 1H), 7.83 (dd, J = 2.0, 0.9 Hz, 1H), 7.66 (t, J = 73.2 Hz, 1H), 7.26 (s, 1H), 6.98 (dd, J = 7.2, 2.0 Hz, 1H), 6.15 (d, J = 0.8 Hz, 1H), 4.20 (s, 2H), 2.54 (s, 3H), 1.35 (s, 6H). 563

Example 642: methyl 4-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]amino]-2-methoxy-benzoate. s prepared (86 mg, 64%) by the similar method of Example 246 while Intermediate 20 was used instead of Intermediate 18. MS (ESI): mass calcd. for C ₂₆ H ₂₈ N ₄ O ₅ , 476.2; m/z found, 477.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.34 – 8.26 (m, 1H), 8.11 (s, 1H), 7.66 (d, J = 8.7 Hz, 1H), 7.61 (dd, J = 2.0, 0.9 Hz, 1H), 7.28 (d, J = 2.1 Hz, 1H), 7.24 (s, 1H), 6.94 – 6.83 (m, 2H), 6.09 (d, J = 0.8 Hz, 1H), 3.86 – 3.77 (m, 5H), 3.71 (s, 3H), 2.41 (s, 3H), 1.16 (s, 6H). Example 643: N-cyclopropyl-4-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl -4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-2-methoxy-benzami de. The title compound was prepared (42 mg, 48%) by the similar method of Example 241 while Intermediate 20, and cyclopropylamine were used instead of Intermediate 12 and 2,2,2- trifluoroethan-1-amine. MS (ESI): mass calcd. for C28H31N5O4, 501.2; m/z found, [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.39 – 8.23 (m, 1H), 8.12 (s, 1H), 7.79 (d, J = 8.7 Hz, 1H), 7.63 (dd, J = 2.0, 0.9 Hz, 1H), 7.35 (d, J = 2.1 Hz, 1H), 7.27 (s, 1H), 6.97 – 6.85 (m, 2H), 6.10 564

(d, J = 0.8 Hz, 1H), 3.90 (s, 3H), 3.82 (s, 2H), 2.79 – 2.67 (m, 1H), 2.43 (s, 3H), 1.16 (s, 6H), 0.77 – 0.66 (m, 2H), 0.54 – 0.45 (m, 2H). Example 644: 4-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]amino]-6-methyl-N-(2,2,2-trifluoroethyl)pyrim idine-2-carboxamide. d (43 mg, 47%) by the similar method of Example 241 while methyl 4-chloro-6-methylpyrimidine-2-carboxylate, and Intermediate 20 were used instead of methyl 4-bromo-2,6-dimethoxybenzoate and Intermediate 12. MS (ESI): mass calcd. for C25H26F3N7O3, 529.2; m/z found, 530.2 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.46 – 8.31 (m, 1H), 8.13 (s, 1H), 7.71 (dd, J = 1.9, 0.9 Hz, 1H), 7.44 (s, 1H), 7.27 (s, 1H), 6.99 (dd, J = 7.2, 2.0 Hz, 1H), 6.63 (s, 1H), 4.05 (q, J = 9.3 Hz, 2H), 3.83 (s, 2H), 2.48 – 2.37 (m, 6H), 1.17 (s, 6H). Example 645: (1r,4r)-4-((4-(2-((3,5-dimethoxyphenyl)amino)pyrazolo[1,5-a] pyridin-5-yl)-6- methylpyridin-3-yl)oxy)cyclohexan-1-ol. prepared (55 mg, 24%) by the similar method of Example 246 while 1-bromo-3,5-dimethoxybenzene was used instead of methyl 4-bromo-2-methoxybenzoate. MS (ESI): mass calcd. for C27H30N4O4, 474.2; m/z found, 475.1 [M+H] ⁺ . ¹ H NMR (500 MHz, 565

Methanol-d4) δ 8.21 – 8.17 (m, 1H), 8.08 (s, 1H), 7.44 (dd, J = 1.9, 0.9 Hz, 1H), 7.17 (s, 1H), 6.74 (dd, J = 7.2, 1.9 Hz, 1H), 6.55 (d, J = 2.2 Hz, 2H), 6.01 (d, J = 0.8 Hz, 1H), 5.93 (t, J = 2.2 Hz, 1H), 4.30 – 4.16 (m, 1H), 3.65 (s, 6H), 3.56 – 3.43 (m, 1H), 2.38 (s, 3H), 2.01 – 1.90 (m, 2H), 1.81 – 1.70 (m, 2H), 1.44 – 1.32 (m, 2H), 1.32 – 1.18 (m, 2H). Example 646: 1-[[4-[2-(3,5-dimethoxyanilino)pyrazolo[1,5-a]pyridin-5-yl]- 6-methyl-3- pyridyl]oxy]-2-methyl-propan-2-ol. prepared (35 mg, 24%) by the similar method of Example 246 while 1-bromo-3,5-dimethoxybenzene and Intermediate 20 were used instead of methyl 4- bromo-2-methoxybenzoate and Intermediate 12. MS (ESI): mass calcd. for C ₂₅ H ₂₈ N ₄ O ₄ , 448.2; m/z found, 449.1 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.26 (d, J = 7.2 Hz, 1H), 8.11 (s, 1H), 7.58 (dd, J = 1.9, 0.8 Hz, 1H), 7.26 (s, 1H), 6.86 (dd, J = 7.2, 1.9 Hz, 1H), 6.56 (d, J = 2.2 Hz, 2H), 6.05 (s, 1H), 5.94 (t, J = 2.2 Hz, 1H), 3.81 (s, 2H), 3.74 – 3.65 (m, 6H), 2.42 (s, 3H), 1.16 (s, 6H). Example 647: 4-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]amino]-N-(2-hydroxy-2-methyl-propyl)-6-methyl -pyrimidine-2-carboxamide. (17 mg, 17%) by the similar method of Example 241 while methyl 4-chloro-6-methylpyrimidine-2-carboxylate, Intermediate 20 and 1-amino-2- 566

methylpropan-2-ol were used instead of methyl 4-bromo-2,6-dimethoxybenzoate, Intermediate 12 and 2,2,2-trifluoroethan-1-amine. MS (ESI): mass calcd. for C27H33N7O4, 519.3; m/z found, 519.3 [M+H] ⁺ . ¹ H NMR (500 MHz, Methanol-d4) δ 8.40 – 8.30 (m, 1H), 8.13 (s, 1H), 7.74 (dd, J = 2.0, 0.9 Hz, 1H), 7.30 (s, 1H), 7.04 – 6.93 (m, 1H), 6.92 (s, 1H), 6.76 (s, 1H), 4.47 (s, 1H), 3.83 (s, 2H), 2.43 (s, 3H), 2.36 – 2.31 (m, 4H), 1.17 (s, 6H), 0.81 (d, J = 6.8 Hz, 3H), 0.75 (d, J = 6.8 Hz, 3H). Example 648: N-cyclopropyl-2-(difluoromethoxy)-4-[[5-[5-(2-hydroxy-2-meth yl-propoxy)-2- methyl-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-6-methox y-benzamide. pared (110 mg, 55%) by the similar method of Example 333 while Intermediate 20 was used instead of Intermediate 12. MS (ESI): mass calcd. for C29H31F2N5O5, 567.2; m/z found, 568.2 [M+H] ⁺ . ¹ H NMR (600 MHz, CD3OD) δ 8.49 – 8.35 (m, 1H), 8.23 (s, 1H), 7.72 (dd, J = 2.0, 0.9 Hz, 1H), 7.37 (s, 1H), 7.14 (d, J = 1.9 Hz, 1H), 7.04 – 6.96 (m, 2H), 6.76 (t, J = 74.4 Hz, 1H), 6.16 (s, 1H), 3.93 (s, 2H), 3.88 (s, 3H), 2.91 – 2.76 (m, 1H), 2.54 (s, 3H), 1.28 (s, 6H), 0.87 – 0.77 (m, 2H), 0.66 – 0.55 (m, 2H). Example 649: N-cyclopropyl-2-fluoro-4-((5-(5-(((1r,4r)-4-hydroxycyclohexy l)oxy)-2- methylpyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)amino)-6-meth oxybenzamide. 567

prepared (81 mg, 46%) by the similar method of Example 245 while methyl 4-bromo-2-fluoro-6-methoxybenzoic acid was used instead of 4-bromo-2,6- dimethoxybenzoic acid. MS (ESI): mass calcd. for C30H32FN5O4, 545.2; m/z found, 546.2 [M+H] ⁺ . ¹ H NMR (500 MHz, CD3OD) δ 8.36 – 8.26 (m, 1H), 8.12 (s, 1H), 7.53 (dd, J = 2.0, 0.9 Hz, 1H), 7.23 (s, 1H), 6.96 – 6.87 (m, 1H), 6.87 – 6.78 (m, 2H), 6.05 (d, J = 0.8 Hz, 1H), 4.37 – 4.21 (m, 1H), 3.76 (s, 3H), 3.59 – 3.48 (m, 1H), 2.76 – 2.66 (m, 1H), 2.41 (s, 3H), 2.02 – 1.89 (m, 2H), 1.82 – 1.68 (m, 2H), 1.47 – 1.35 (m, 2H), 1.35 – 1.22 (m, 2H), 0.74 – 0.63 (m, 2H), 0.55 – 0.42 (m, 2H). Example 650: 6-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]amino]-N-isopropyl-4-(trifluoromethyl)pyridin e-3-carboxamide. pared (52 mg, 72%) by the similar method of Example 241 while methyl 6-chloro-4-(trifluoromethyl)nicotinate, Intermediate 20 and isopropyl amine were used instead of methyl 4-bromo-2,6-dimethoxybenzoate, Intermediate 12 and 2,2,2- trifluoroethan-1-amine. MS (ESI): mass calcd. for C ₂₇ H ₂₉ F ₃ N ₆ O ₃ , 542.2; m/z found, 543.2 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl3) δ 8.34 (s, 1H), 8.22 (d, J = 7.2 Hz, 1H), 8.13 (s, 1H), 7.55 (s, 1H), 7.47 (s, 1H), 7.02 (s, 1H), 6.79 (dd, J = 7.2, 1.9 Hz, 1H), 6.38 (s, 1H), 5.94 (d, J = 8.0 Hz, 1H), 4.24 – 4.13 (m, 1H), 3.85 (s, 2H), 2.45 (s, 3H), 1.24 (s, 6 H) 1.19 (d, J = 6.6 Hz, 6H). 568

Example 651: 6-[[5-[5-(2-hydroxy-2-methyl-propoxy)-2-methyl-4-pyridyl]pyr azolo[1,5- a]pyridin-2-yl]amino]-N-(2,2,2-trifluoroethyl)-4-(trifluorom ethyl)pyridine-3-carboxamide. repared (73 mg, 95%) by the similar method of Example 241 while methyl 6-chloro-4-(trifluoromethyl)nicotinate, and Intermediate 20 were used instead of methyl 4-bromo-2,6-dimethoxybenzoate, and Intermediate 12. MS (ESI): mass calcd. for C26H24F6N6O3, 582.2; m/z found, 583.1 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl3) δ 8.44 (s, 1H), 8.30 (d, J = 7.1 Hz, 1H), 8.19 (s, 1H), 7.81 (s, 1H), 7.54 (d, J = 8.5 Hz, 2H), 7.10 (s, 1H), 6.88 (dd, J = 7.2, 1.8 Hz, 1H), 6.44 (s, 1H), 6.10 (s, 1H), 4.15 – 3.99 (m, 2H), 3.85 (s, 3H), 2.49 (s, 3H), 1.23 (s, 6H). Example 652: 1-[[4-[2-[(3-fluoro-4-methyl-2-pyridyl)amino]pyrazolo[1,5-a] pyridin-5-yl]-6- methyl-3-pyridyl]oxy]-2-methyl-propan-2-ol. s prepared (55 mg, 34%) by the similar method of Example 246 while 2-bromo-3-fluoro-4-picoline and Intermediate 20 were used instead of methyl 4-bromo-2- methoxybenzoate and Intermediate 12. MS (ESI): mass calcd. for C23H24FN5O2, 421.2; m/z found, 422.1 [M+H] ⁺ . ¹ H NMR (500 MHz, CD ₃ OD) δ 8.37 – 8.27 (m, 1H), 8.18 (s, 1H), 7.86 (d, J = 5.1 Hz, 1H), 7.71 (dd, J = 2.0, 0.9 Hz, 1H), 7.28 (s, 1H), 7.05 – 6.93 (m, 2H), 6.74 – 6.60 (m, 1H), 3.90 (s, 2H), 2.49 (s, 3H), 2.27 (d, J = 1.9 Hz, 3H), 1.26 (s, 6H). 569

Example 653: N-[6-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]imidazo[1, 2-a]pyrazin-2- yl]cyclopropanecarboxamide. as prepared in the similar manner of Example 505 except trans- cyclohexane-1,4-diol was used instead of tert-butyl (1R,5S,7s)-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate (121 mg, 24%). MS (ESI): mass calcd. for C22H25N5O3, 407.2; m/z found, 408.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CD ₃ OD) δ 9.06 (d, J = 1.4 Hz, 1H), 8.82 (dd, J = 1.5, 0.7 Hz, 1H), 8.25 – 8.13 (m, 2H), 7.82 (s, 1H), 4.44 (dq, J = 8.8, 4.4, 3.9 Hz, 1H), 3.58 (td, J = 9.1, 4.4 Hz, 1H), 2.44 (s, 3H), 2.18 – 2.00 (m, 2H), 1.95 – 1.74 (m, 3H), 1.66 – 1.47 (m, 2H), 1.46 – 1.25 (m, 2H), 0.92 (dt, J = 4.6, 3.1 Hz, 2H), 0.84 (tdd, J = 7.6, 5.6, 2.6 Hz, 2H). Example 654: N-[6-[2-methyl-5-(1-methylazetidin-3-yl)oxy-4-pyridyl]imidaz o[1,2-a]pyrazin-2- yl]cyclopropanecarboxamide. as prepared in the similar manner of Example 505 except 1- methylazetidin-3-ol was used instead of tert-butyl (1R,5S,7s)-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate (12.8 mg, 13%). MS (ESI): mass calcd. for C ₂₀ H ₂₂ N ₆ O ₂ , 378.2; m/z found, 379.2 [M+H] ⁺ . ¹ H NMR (500 MHz, CD3OD) δ 9.30 (d, J = 1.5 Hz, 1H), 9.00 – 8.87 (m, 1H), 8.35 (s, 1H), 7.95 (d, J = 1.2 Hz, 2H), 5.04 (tt, J = 5.9, 4.2 Hz, 1H), 3.92 – 3.72 570

(m, 2H), 3.52 – 3.38 (m, 2H), 2.53 (s, 3H), 2.44 (s, 3H), 1.92 (tt, J = 7.9, 4.6 Hz, 1H), 1.05 – 0.97 (m, 2H), 0.95 – 0.87 (m, 2H). Example 655: N-[6-[5-(4-hydroxycyclohexoxy)-2-methyl-4-pyridyl]imidazo[1, 2-a]pyrazin-2- yl]cyclopropanecarboxamide. as prepared in the similar manner of Example 505 except cis- cyclohexyldiol was used instead of tert-butyl (1R,5S,7s)-7-hydroxy-3-oxa-9- azabicyclo[3.3.1]nonane-9-carboxylate (29.2 mg, 19%). MS (ESI): mass calcd. for C22H25N5O3, 407.2; m/z found, 408.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CD3OD) δ 9.22 (d, J = 1.4 Hz, 1H), 8.95 (s, 1H), 8.32 (d, J = 13.4 Hz, 2H), 7.93 (s, 1H), 4.72 (s, 1H), 3.72 (dt, J = 8.2, 4.2 Hz, 1H), 2.56 (s, 3H), 2.08 (d, J = 8.7 Hz, 2H), 2.05 (s, 1H), 1.93 (td, J = 7.6, 3.5 Hz, 1H), 1.86 – 1.68 (m, 4H), 1.68 – 1.55 (m, 2H), 1.03 (dt, J = 5.8, 3.1 Hz, 2H), 0.95 (dt, J = 8.0, 3.1 Hz, 2H). Example 656: N-[5-[2-cyano-5-[[(1R,5S,7s)-9-methyl-3-oxa-9-azabicyclo[3.3 .1]nonan-7- yl]oxy]-4-pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropaneca rboxamide. 71

The title compound was prepared in the similar manner of Example 505 except N-(5-(2- cyano-5-fluoropyridin-4-yl)pyrazolo[1,5-a]pyridin-2-yl)cyclo propanecarboxamide was used instead of N-(6-(5-fluoro-2-methylpyridin-4-yl)imidazo[1,2-a]pyrazin-2- yl)cyclopropanecarboxamide and an additional reductive amination step was performed as follows: H(CHO)n (30 mg, 0.34 mmol) was added to a solution consisting of N-(5-(5- ((1R,5S,7s)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yloxy)-2-cyanop yridin-4-yl)pyrazolo[1,5- a]pyridin-2-yl)cyclopropanecarboxamide (100 mg, 0.225 mmol) and MeOH (10 mL). The reaction mixture was stirred at room-temperature for 30 min, and then NaBH3CN (42.4 mg, 0.675 mmol) was added to the reaction mixture. The resultant mixture was stirred at room- temperature for 1 hour. The crude mixture was purified via preparative HPLC to afford (21.1 mg, 20%). MS (ESI): mass calcd. for C25H26N6O3, 458.2; m/z found, 459.3 [M+H] ⁺ . ¹ H NMR (400MHz, DMSO-d6) δ 11.12 (s, 1H), 8.56 (d, J = 7.2 Hz, 1H), 8.50 (d, J = 0.8 Hz, 1H), 8.43 - 8.39 (m, 1H), 8.22 (d, J = 1.6 Hz, 1H), 7.33 (d, J = 7.2 Hz, 1H), 6.86 (s, 1H), 5.04 - 4.93 (m, 1H), 3.80 (d, J =10.4 Hz, 2H), 3.56 (d, J = 10.8 Hz, 2H), 2.68 - 2.60 (m, 2H), 2.49 - 2.43 (m, 2H), 2.41 (s, 3H), 1.99 - 1.85 (m, 1H), 1.73 - 1.60 (m, 2H), 0.89 - 0.77 (m, 4H) Example 657: 4-[[6-methyl-4-[2-[(6-methylpyrazin-2-yl)amino]imidazo[1,2-a ]pyrazin-6-yl]-3- pyridyl]oxy]cyclohexanol. ed in the similar manner of Example 320 except 2-chloro-6- methylpyrazine was used instead of 2-chloro-5-methylpyrazine in step B and trans-cyclohexane- 1,4-diol instead of endo-tert-butyl (1R,5S,7s)-7-hydroxy-3-oxa-9-azabicyclo[3.3.1]nonane-9- carboxylate in step C.MS (ESI): mass calcd. for C23H25N7O2, 431.2; m/z found, 432.2 [M+H] ⁺ . 1H NMR (400 MHz, DMSO-d ₆ ) δ 10.45 (s, 1H), 9.22 (d, J = 1.4 Hz, 1H), 8.96 (dd, J = 1.5, 0.7 572

Hz, 1H), 8.51 (d, J = 0.7 Hz, 1H), 8.40 (s, 1H), 8.34 (s, 1H), 7.93 (s, 1H), 7.82 (s, 1H), 4.52 (dt, J = 9.2, 4.9 Hz, 2H), 3.54 (dt, J = 9.2, 4.9 Hz, 1H), 2.47 (s, 3H), 2.04 (d, J = 5.6 Hz, 2H), 1.80 (dd, J = 13.0, 3.9 Hz, 2H), 1.65 – 1.51 (m, 2H), 1.33 (q, J = 12.9 Hz, 2H). Example 658: N-(2,6-dimethylpyrimidin-4-yl)-5-[2-ethoxy-5-[[(2S)-morpholi n-2-yl]methoxy]- 4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. using methods analogous to those described in Example 501. MS (ESI): mass calcd. for C ₂₅ H ₂₉ N ₇ O ₃ , 475.2; m/z found, 476.2 [M+H] ⁺ . ¹ H NMR (500 MHz, CD3OD) δ 8.34 (dt, J = 7.1, 0.9 Hz, 1H), 7.80 (s, 1H), 7.73 (dd, J = 1.9, 0.9 Hz, 1H), 6.99 – 6.84 (m, 2H), 6.78 (d, J = 4.1 Hz, 2H), 4.21 (q, J = 7.1 Hz, 2H), 3.99 – 3.87 (m, 2H), 3.82 – 3.74 (m, 1H), 3.68 (ddd, J = 11.7, 5.7, 3.6 Hz, 1H), 3.51 (ddd, J = 11.5, 9.3, 5.0 Hz, 1H), 2.77 (dd, J = 12.5, 2.4 Hz, 1H), 2.70 – 2.62 (m, 2H), 2.56 (dd, J = 12.5, 10.6 Hz, 1H), 2.44 (s, 3H), 2.30 – 2.23 (m, 3H), 1.28 (t, J = 7.1 Hz, 3H). Example 659: 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- (2,2,2-trifluoroethoxy)-3-pyridyl]oxy]-2,2-dimethyl-propanen itrile. a coupling method similar to that described in Example 501. MS (ESI): mass calcd. for C ₂₅ H ₂₄ F ₃ N ₇ O ₂ , 511.2; m/z found, 512.2 [M+H] ⁺ . ¹ H NMR (400 573

MHz, DMSO-d6) δ 10.25 (s, 1H), 8.60 (d, J = 7.2 Hz, 1H), 8.07 (s, 1H), 7.91 (s, 1H), 7.16 (s, 1H), 7.09 - 6.98 (m, 2H), 6.86 (br. s., 1H), 5.00 (q, J = 9.2 Hz, 2H), 4.16 (s, 2H), 2.45 (s, 3H), 2.30 (s, 3H), 1.35 (s, 6H). ¹⁹ F NMR (376 MHz, DMSO-d6) δ-72.30 (t, J = 9.0 Hz, 3F) Example 660: 3-[[6-(2,2-difluoroethoxy)-4-[2-[(2,6-dimethylpyrimidin-4- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dim ethyl-propanenitrile. g a coupling method similar to that described in Example 501. MS (ESI): mass calcd. for C ₂₅ H ₂₅ F ₂ N ₇ O ₂ , 493.2; m/z found, 494.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ10.24 (s, 1H), 8.60 (d, J = 7.2 Hz, 1H), 8.06 (s, 1H), 7.89 (d, J = 0.8 Hz, 1H), 7.09 (s, 1H), 7.07 - 7.00 (m, 2H), 6.86 (s, 1H), 6.58 - 6.24 (m, 1H), 4.57 (dt, J = 3.6, 15.2 Hz, 2H), 4.14 (s, 2H), 2.45 (s, 3H), 2.30 (s, 3H), 1.35 (s, 6H) 19F NMR (376 MHz, DMSO-d ₆ ) δ- 125.57 (td, J = 15.0, 54.9 Hz, 2F) Example 661: 1-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- (2,2,2-trifluoroethoxy)-3-pyridyl]oxy]-2-methyl-propan-2-ol. methods analogous to those described in Example 501. MS (ESI): mass calcd. for C24H25F3N6O3, 502.2; m/z found, 503.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ10.22 (s, 1H), 8.59 (d, J = 7.6 Hz, 1H), 8.03 (s, 1H), 7.91 (d, J = 1.2 Hz, 1H), 7.12 574

(s, 1H), 7.09 (dd, J = 2.0, 7.2 Hz, 1H), 7.03 (br. s., 1H), 6.84 (br. s., 1H), 4.98 (q, J = 8.8 Hz, 2H), 4.65 (s, 1H), 3.84 (s, 2H), 2.46 (s, 3H), 2.30 (s, 3H), 1.15 (s, 6H) ¹⁹ F NMR (376 MHz, DMSO-d ₆ ) δ-72.32 (t, J = 9.4 Hz, 3F). Example 662: N-(2,6-dimethylpyrimidin-4-yl)-5-[5-[[(2S)-morpholin-2-yl]me thoxy]-2-(2,2,2- trifluoroethoxy)-4-pyridyl]pyrazolo[1,5-a]pyridin-2-amine. ng methods analogous to those described in Example 501. MS (ESI): mass calcd. for C25H26F3N7O3, 529.2; m/z found, 530.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CD ₃ OD) δ 8.33 (dt, J = 7.3, 1.0 Hz, 1H), 7.85 (s, 1H), 7.75 (dd, J = 2.0, 0.9 Hz, 1H), 6.98 – 6.92 (m, 2H), 6.91 (s, 1H), 6.78 (s, 1H), 4.72 (d, J = 8.8 Hz, 2H), 4.01 – 3.91 (m, 2H), 3.83 – 3.76 (m, 1H), 3.74 – 3.64 (m, 1H), 3.52 (ddd, J = 11.5, 8.8, 5.3 Hz, 1H), 2.78 (dd, J = 12.6, 2.4 Hz, 1H), 2.68 (dd, J = 8.7, 3.0 Hz, 2H), 2.58 (dd, J = 12.5, 10.6 Hz, 1H), 2.43 (s, 3H), 2.28 (s, 3H). Example 663: 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- isopropoxy-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. sing methods analogous to those described in Example 501. MS (ESI): mass calcd. for C26H29N7O2, 471.2; m/z found, 472.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.23 (s, 1H), 8.58 (d, J = 7.2 Hz, 1H), 8.02 (s, 1H), 7.86 (s, 1H), 7.08 - 6.99 (m, 575

2H), 6.87 (s, 1H), 6.83 (br. s., 1H), 5.27 - 5.16 (m, 1H), 4.10 (s, 2H), 2.45 (s, 3H), 2.30 (s, 3H), 1.34 (s, 6H), 1.31 (d, J = 6.4 Hz, 6H). Example 664: 4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- (2,2,2-trifluoroethoxy)-3-pyridyl]oxy]cyclohexanol. utyldimethylsilyl)oxy)cyclohexyl)oxy)-2-chloropyridin-4- yl)-N-(2,6-dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-a mine. The title compound was prepared using methods analogous to those descrbied in Example 198 and using 5-(2-chloro-5- fluoropyridin-4-yl)-N-(2,6-dimethylpyrimidin-4-yl)pyrazolo[1 ,5-a]pyridin-2-amine instead of Intermediate 15 and using (1r,4r)-4-((tert-butyldimethylsilyl)oxy)cyclohexanol instead of trans- 1,4-cyclohexanediol. Step B: 5-(5-(((1r,4r)-4-((tert-butyldimethylsilyl)oxy)cyclohexyl)ox y)-2-(2,2,2- trifluoroethoxy)pyridin-4-yl)-N-(2,6-dimethylpyrimidin-4-yl) pyrazolo[1,5-a]pyridin-2-amine. The title compound was prepared using a coupling method similar to that described in Example 501. Step C: 4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- (2,2,2-trifluoroethoxy)-3-pyridyl]oxy]cyclohexanol. A mixture consisting of H ₂ SO ₄ (0.8 mL, 1.6 mmol) and 5-(5-(((1r,4r)-4-((tert-butyldimethylsilyl)oxy)cyclohexyl)ox y)-2-(2,2,2- trifluoroethoxy)pyridin-4-yl)-N-(2,6-dimethylpyrimidin-4-yl) pyrazolo[1,5-a]pyridin-2-amine (40 mg, 0.062 mmol) and MeCN (0.5 mL) was stirred at room-temperature for 3 h. The reaction mixture was purified by preparative HPLC using a Phenomenex Gemini-NX C18 150 x 30 mm x 5 µm (eluent: 42% to 70% (v/v) water(0.05%NH3H2O)-ACN to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ ethyl alcohol, and 576

then lyophilized to dryness to afford the title compound (21.9 mg, 66%) as a white solid. MS (ESI): mass calcd. for C26H27F3N6O3, 528.1; m/z found, 529.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.22 (s, 1H), 8.58 (d, J = 7.2 Hz, 1H), 8.09 (s, 1H), 7.83 (d, J = 0.8 Hz, 1H), 7.09 (s, 1H), 7.05 - 6.98 (m, 2H), 6.87 (br. s., 1H), 4.97 (q, J = 9.2 Hz, 2H), 4.52 (d, J = 4.0 Hz, 1H), 4.35 - 4.27 (m, 1H), 3.52 - 3.43 (m, 1H), 2.46 (s, 3H), 2.30 (s, 3H), 2.01 - 1.92 (m, 2H), 1.78 - 1.66 (m, 2H), 1.44 - 1.34 (m, 2H), 1.30 - 1.23 (m, 2H). ¹⁹ F NMR (376 MHz, DMSO-d6) δ-72.29 (s, 3F) Example 665: N-[5-[5-(2-cyano-2-methyl-propoxy)-2-(difluoromethoxy)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. sing methods analogous to those described in Intermediate 27 except Intermediate 3 was used instead of Intermediate 14. MS (ESI): mass calcd. for C ₂₂ H ₂₁ F ₂ N ₅ O ₃ , 441.2; m/z found, 442.2 [M+H] ⁺ . ¹ H NMR (500 MHz, CD ₃ OD) δ 8.33 (dt, J = 7.3, 0.9 Hz, 1H), 7.94 (s, 1H), 7.77 (dd, J = 2.0, 0.9 Hz, 1H), 7.39 (t, J = 73.3 Hz, 1H), 7.03 (d, J = 0.4 Hz, 1H), 7.00 (dd, J = 7.3, 2.0 Hz, 1H), 6.83 (s, 1H), 4.02 (s, 2H), 1.77 (tt, J = 8.1, 4.5 Hz, 1H), 1.30 (s, 6H), 0.94 – 0.85 (m, 2H), 0.85 – 0.71 (m, 2H). Example 666: N-[5-[2-chloro-5-(2-cyano-2-methyl-propoxy)-4-pyridyl]pyrazo lo[1,5-a]pyridin- 2-yl]cyclopropanecarboxamide. 577

red using methods analogous to those described in Example 262. MS (ESI): mass calcd. for C ₂₁ H ₂₀ ClN ₅ O ₂ , 409.9; m/z found, 432.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 11.13 (s, 1H), 8.61 (dt, J = 7.3, 0.9 Hz, 1H), 8.34 (s, 1H), 7.96 (dd, J = 2.0, 0.9 Hz, 1H), 7.67 (s, 1H), 7.11 (dd, J = 7.2, 2.1 Hz, 1H), 6.91 (d, J = 0.8 Hz, 1H), 4.27 (s, 2H), 2.00 – 1.87 (m, 1H), 1.37 (s, 6H), 0.90 – 0.75 (m, 4H). Example 667: 3-[[6-(2,2-difluoroethylamino)-4-[2-[(2,6-dimethylpyrimidin- 4- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dim ethyl-propanenitrile. -dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyridin-5- yl)pyridin-3-yl)oxy)-2,2-dimethylpropanenitrile. The title compound was prepared using methods analogous to those described in Example 666. Step B: The title compound was prepared using methods analogous to those described in Example 501 and using 3-((6-chloro-4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazol o[1,5- a]pyridin-5-yl)pyridin-3-yl)oxy)-2,2-dimethylpropanenitrile, 2,2-difluoroethanamine, Pd2(dba)3, Xantphos, NaOtBu, and 1,4-dioxane instead of tert-butyl (S)-2-(((6-chloro-4-(2-((2,6- dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyridin-5-yl)pyr idin-3- yl)oxy)methyl)morpholine-4-carboxylate, methylamine, JosiPhos pre-catalyst gen.3, Cs2CO3, and toluene. MS (ESI): mass calcd. for C25H26F2N8O, 492.2; m/z found, 493.2 [M+H] ⁺ . ¹ H NMR 578

(400 MHz, CDCl3) δ 8.40 (d, J = 7.2 Hz, 1H), 7.87 (s, 1H), 7.65 (d, J = 0.8 Hz, 1H), 7.58 (s, 1H), 7.11 (s, 1H), 6.97 (dd, J = 2.0, 7.2 Hz, 1H), 6.57 (s, 1H), 6.54 (s, 1H), 6.16 - 5.83 (m, 1H), 4.60 (t, J = 6.4 Hz, 1H), 3.84 (s, 2H), 3.83 - 3.73 (m, 2H), 2.60 (s, 3H), 2.45 (s, 3H), 1.37 (s, 6H). ¹⁹ F NMR (376 MHz, CDCl ₃ ) δ -123.16 (s, 2F) Example 668: 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- (methoxymethyl)-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. sing a coupling method similar to that described in Example 441, Step B, and using 3-((6-chloro-4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazol o[1,5- a]pyridin-5-yl)pyridin-3-yl)oxy)-2,2-dimethylpropanenitrile (Example 667 Step A), tributyl(methoxymethyl)stannane, Pd(PPh3)4, and NMP instead of (R)-N-(5-(2-chloro-5-((1- methylpyrrolidin-3-yl)methoxy)pyridin-4-yl)pyrazolo[1,5-a]py ridin-2- yl)cyclopropanecarboxamide, tributyl(1-propynyl)tin, bis(triphenylphosphine)palladium(ii) dichloride, and 1,4-dioxane. MS (ESI): mass calcd. for C25H27N7O2, 457.2; m/z found, 458.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.41 (d, J = 7.2 Hz, 1H), 8.28 (s, 1H), 7.73 (s, 1H), 7.50 (s, 1H), 7.42 (s, 1H), 7.13 (s, 1H), 7.04 (dd, J = 1.6, 7.2 Hz, 1H), 6.58 (s, 1H), 4.60 (s, 2H), 4.04 (s, 2H), 3.51 (s, 3H), 2.60 (s, 3H), 2.46 (s, 3H), 1.42 (s, 6H). Example 669: N-[5-[5-(2-cyano-2-methyl-propoxy)-2-(2,2,2-trifluoroethoxy) -4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. 579

ng a coupling method similar to that described in Example 501. MS (ESI): mass calcd. for C23H22F3N5O3, 473.2; m/z found, 474.2 [M+H] ⁺ . ¹ H NMR (400 MHz, CD ₃ OD) δ 8.44 (dt, J = 7.2, 0.9 Hz, 1H), 8.00 (s, 1H), 7.86 (dd, J = 2.0, 0.9 Hz, 1H), 7.11 (dd, J = 7.3, 2.0 Hz, 1H), 7.06 (s, 1H), 6.94 (s, 1H), 4.90 (s, 2H), 4.09 (s, 2H), 1.89 (tt, J = 8.1, 4.5 Hz, 1H), 1.02 (dt, J = 4.6, 3.1 Hz, 2H), 0.98 – 0.86 (m, 2H). Example 670: 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- prop-1-ynyl-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. sing a similar method to that described in Example 671. MS (ESI): mass calcd. for C ₂₆ H ₂₅ N ₇ O, 451.2; m/z found, 452.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.22 (s, 1H), 8.62 – 8.57 (m, 1H), 8.45 (s, 1H), 7.92 – 7.86 (m, 1H), 7.58 (s, 1H), 7.09 – 6.98 (m, 2H), 6.85 (s, 1H), 4.28 (s, 2H), 2.45 (s, 3H), 2.32 – 2.28 (m, 3H), 2.08 (s, 3H), 1.36 (s, 6H). Example 671: (2S,3R)-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo [1,5-a]pyridin-5- yl]-6-prop-1-ynyl-3-pyridyl]oxymethyl]tetrahydrofuran-3-ol. 580

ro-4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5- a]pyridin-5-yl)pyridin-3-yl)oxy)methyl)tetrahydrofuran-3-ol. To a solution of Intermediate 26 (1.00 g, 2.73 mmol, 1.00 equiv), ((2S,3R)-3-hydroxytetrahydrofuran-2-yl)methyl 4- methylbenzenesulfonate (0.74 g, 2.73 mmol, 1.00 equiv), Cs ₂ CO ₃ (2.66 g.8.18 mmol, 3.00 equiv) in DMA (6.8 mL) was stirred at 50 C for 16 hr. The reaction mixture was then cooled to room temperature and diluted with EtOAc, then filtered through celite. The organics were then washed with water and then brine. The aqueous was back-extracted with 10% IPA/chloroform (100 mL) and then 20% IPA/chloroform (2 x 20 mL). The combined organics were dried over Na2SO4, filtered and concentrated in vacuo. The crude oil was diluted with diethyl ether (40 mL) and the resulting suspension was filtered to give the title compound as a tan solid (798 mg, 1.71 mmol, 62 % yield). Step B: (2S,3R)-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo [1,5-a]pyridin-5- yl]-6-prop-1-ynyl-3-pyridyl]oxymethyl]tetrahydrofuran-3-ol. The title compound was prepared using a coupling method similar to that described in Example 441, Step B. MS (ESI): mass calcd. for C26H26N6O3, 470.2; m/z found, 471.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ10.20 (s, 1H), 8.61 – 8.57 (m, 1H), 8.43 (s, 1H), 7.90 – 7.84 (m, 1H), 7.53 (s, 1H), 7.08 – 6.95 (m, 2H), 6.86 (s, 1H), 5.06 (d, J = 4.3 Hz, 1H), 4.28 – 4.12 (m, 3H), 3.90 – 3.75 (m, 3H), 2.46 (s, 3H), 2.32 – 2.27 (m, 3H), 2.07 (s, 3H), 1.98 – 1.87 (m, 1H), 1.75 – 1.63 (m, 1H). Example 672: 3-[[6-(cyanomethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)amino ]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. 581

-iodopyridin-3-yl)oxy)-2,2-dimethylpropanenitrile. A mixture consisting 3-((6-hydroxy-4-iodopyridin-3-yl)oxy)-2,2-dimethylpropanenit rile (Example 329, Step B, 500 mg, 1.57 mmol), 2-chloroacetonitrile (142 mg, 1.87 mmol), Ag ₂ CO ₃ (867 mg, 3.14 mmol), and NMP (12 mL) was stirred at 120 °C for 3 h. The reaction mixture was concentrated under reduced pressure to give the crude product which was purified by FCC (eluent: petroleum ether: ethyl acetate = 1:0 to 1:1) to afford the title compound (200 mg, 29%) as a yellow oil. Step B: 3-[[6-(cyanomethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)amino ]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. The title compound was prepared using the method analogous to that described in Example 329, Step D, and using 3-((6- (cyanomethoxy)-4-iodopyridin-3-yl)oxy)-2,2-dimethylpropaneni trile instead of 3-((6- (difluoromethoxy)-4-iodopyridin-3-yl)oxy)-2,2-dimethylpropan enitrile. MS (ESI): mass calcd. for C25H24N8O2, 468.2; m/z found, 469.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.23 (s, 1H), 8.61 (d, J = 6.4 Hz, 1H), 8.12 (s, 1H), 7.90 (s, 1H), 7.15 (s, 1H), 7.09 - 6.97 (m, 2H), 6.87 (s, 1H), 5.22 (s, 2H), 4.18 (s, 2H), 2.46 (s, 3H), 2.31 (s, 3H), 1.35 (s, 6H). Example 673: 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-(2- fluoroethoxy)-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. a coupling method similar to that described in Example 501. MS (ESI): mass calcd. for C ₂₅ H ₂₆ FN ₇ O ₂ , 475.1; m/z found, 476.1 [M+H] ⁺ . ¹ H NMR (400 582

MHz, DMSO-d6) δ 10.23 (s, 1H), 8.59 (d, J = 7.6 Hz, 1H), 8.04 (s, 1H), 7.88 (d, J = 1.2 Hz, 1H), 7.07 - 6.99 (m, 3H), 6.85 (s, 1H), 4.87 - 4.66 (m, 2H), 4.60 - 4.41 (m, 2H), 4.12 (s, 2H), 2.45 (s, 3H), 2.30 (s, 3H), 1.35 (s, 6H). ¹⁹ F NMR (376 MHz, DMSO-d6) δ -223.29 (m, 1F). Example 674: 3-[[6-hydroxy-4-[2-[[6-methyl-2-(methylamino)pyrimidin-4- yl]amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dim ethyl-propanenitrile. a by-product from the synthesis of Example 675. MS (ESI): mass calcd. for C ₂₃ H ₂₄ N ₈ O ₂ , 444.2; m/z found, 445.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 9.84 (s, 1H), 8.51 (dt, J = 7.2, 0.9 Hz, 1H), 7.76 (s, 1H), 7.31 (s, 1H), 7.05 (s, 1H), 6.91 (dd, J = 7.2, 2.0 Hz, 1H), 6.60 (s, 1H), 6.52 (s, 1H), 6.22 (s, 1H), 3.90 (s, 2H), 2.83 (d, J = 4.8 Hz, 3H), 2.13 (s, 3H), 1.29 (s, 6H). Example 675: 3-[[6-chloro-4-[2-[[6-methyl-2-(methylamino)pyrimidin-4- yl]amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dim ethyl-propanenitrile. ,5-a]pyridin-5-yl)-6-chloropyridin-3-yl)oxy)-2,2- dimethylpropanenitrile. The title compound was prepared using methods analogous to those described in Intermediate 25, Step C, and using 3-((6-chloro-4-iodopyridin-3-yl)oxy)-2,2- 583

dimethylpropanenitrile instead of (2R,3S)-2-(((4-bromo-6-methylpyridin-3- yl)oxy)methyl)tetrahydrofuran-3-ol. Step B: 3-[[6-chloro-4-[2-[[6-methyl-2-(methylamino)pyrimidin-4-yl]a mino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. The title compound was prepared using methods analogous to those described in Example 116, Step A, and using 4-chloro-n,6- dimethylpyrimidin-2-amine and 3-((4-(2-aminopyrazolo[1,5-a]pyridin-5-yl)-6-chloropyridin-3 - yl)oxy)-2,2-dimethylpropanenitrile instead of 4-bromo-1-(difluoromethyl)-1H-pyrazole and Intermediate 9. MS (ESI): mass calcd. for C23H23ClN8O, 462.2; m/z found, 463.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 9.88 (s, 1H), 8.57 (d, J = 7.2 Hz, 1H), 8.32 (s, 1H), 7.91 (s, 1H), 7.67 (s, 1H), 7.09 (s, 1H), 7.04 (dd, J = 7.2, 2.0 Hz, 1H), 6.61 (s, 1H), 6.21 (s, 1H), 4.26 (s, 2H), 2.84 (d, J = 4.8 Hz, 3H), 2.13 (s, 3H), 1.36 (s, 6H). Example 676: 3-[[6-(difluoromethoxy)-4-[2-[[6-methyl-2-(methylamino)pyrim idin-4- yl]amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dim ethyl-propanenitrile. methods analogous to those described in Example 682. MS (ESI): mass calcd. for C24H24F2N8O2, 494.2; m/z found, 495.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 11.36 (s, 1H), 8.68 (d, J = 7.3 Hz, 1H), 8.15 (s, 1H), 8.08 (s, 1H), 7.67 (t, J = 73.1 Hz, 1H), 7.31 (s, 1H), 7.17 (d, J = 7.3 Hz, 1H), 6.52 (s, 1H), 6.32 (s, 1H), 4.22 (s, 2H), 2.99 (d, J = 4.4 Hz, 3H), 2.30 (s, 3H), 1.35 (s, 6H). Example 677: (1r,4r)-4-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin -4- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]cyclohex anol. 584

p , utyldimethylsilyl)oxy)cyclohexyl)oxy)-4-(2-((2,6- dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyridin-5-yl)pyr idin-2-ol. A mixture consisting of 5-(5-(((trans)-4-((tert-butyldimethylsilyl)oxy)cyclohexyl)ox y)-2-chloropyridin-4-yl)-N-(2,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine (Example 664, Step A, 1.0 g, 1.73 mmol), KOH (484 mg, 8.63 mmol), t-BuXphos (73.3 mg, 0.173 mmol), Pd2(dba)3 (158 mg, 0.173) and 1,4-dioxane/H2O (30 mL, 1:1) was stirred at 106 °C overnight. The mixture was concentrated under reduced pressure to give a crude product, which was purified by FCC (eluent: petroleum ether/(ethyl acetate:EtOH=3:1) from 1:0 to 1:1) to afford the title compound (180 mg, 16%) as a yellow solid. Step B: 5-(5-(((1r,4r)-4-((tert-butyldimethylsilyl)oxy)cyclohexyl)ox y)-2- (difluoromethoxy)pyridin-4-yl)-N-(2,6-dimethylpyrimidin-4-yl )pyrazolo[1,5-a]pyridin-2-amine. The title compound was prepared using methods analogous to those described in Example 329, Step C, and using 5-(((1r,4r)-4-((tert-butyldimethylsilyl)oxy)cyclohexyl)oxy)- 4-(2-((2,6- dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyridin-5-yl)pyr idin-2-ol instead of 3-((6- hydroxy-4-iodopyridin-3-yl)oxy)-2,2-dimethylpropanenitrile. Step C: 4-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)am ino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]cyclohexanol. The title compound was prepared using a TBDMS deprotection method similar to that described in Example 664, Step C, and using 5-(5-(((1r,4r)-4- ((tert-butyldimethylsilyl)oxy)cyclohexyl)oxy)-2-(difluoromet hoxy)pyridin-4-yl)-N-(2,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine instead of 5-(5-(((1r,4r)-4-((tert- butyldimethylsilyl)oxy)cyclohexyl)oxy)-2-(2,2,2-trifluoroeth oxy)pyridin-4-yl)-N-(2,6- dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. MS (ESI): mass calcd. for C ₂₅ H ₂₆ F ₂ N ₆ O ₃ , 496.1; m/z found, 497.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.24 (s, 585

1H), 8.60 (d, J = 7.2 Hz, 1H), 8.17 (s, 1H), 7.84 (d, J = 1.2 Hz, 1H), 7.65 (t, J = 59.2 Hz, 1H), 7.22 (s, 1H), 7.05 - 6.97 (m, 2H), 6.89 (br. s., 1H), 4.55 (br. s., 1H), 4.47 - 4.35 (m, 1H), 3.56 - 3.44 (m, 1H), 2.46 (s, 3H), 2.30 (s, 3H), 2.02 - 1.95 (m, 2H), 1.76 - 1.69 (m, 2H), 1.46 - 1.38 (m, 2H), 1.33 - 1.25 (m, 2H). ¹⁹ F NMR (376 MHz, DMSO-d6) δ -86.26 (d, J = 73.1 Hz, 2F) Example 678: 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-(2- hydroxyethoxy)-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. p y hylsilyl)oxy)ethoxy)-4-(2-((2,6-dimethylpyrimidin-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)pyridin-3-yl)oxy)-2,2-d imethylpropanenitrile. The title compound was prepared using the coupling method described in Example 501 and using 3-((6- chloro-4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5- a]pyridin-5-yl)pyridin-3-yl)oxy)- 2,2-dimethylpropanenitrile and 2-((tert-butyldimethylsilyl)oxy)ethan-1-ol instead of tert-butyl (S)-2-(((6-chloro-4-(2-((2,6-dimethylpyrimidin-4-yl)amino)py razolo[1,5-a]pyridin-5-yl)pyridin- 3-yl)oxy)methyl)morpholine-4-carboxylate and methylamine. Step B: 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6-(2- hydroxyethoxy)-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. The title compound was prepared using a TBDMS deprotection method similar to that described in Example 664, Step C, and using 3-((6-(2-((tert-butyldimethylsilyl)oxy)ethoxy)-4-(2-((2,6-di methylpyrimidin-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)pyridin-3-yl)oxy)-2,2-d imethylpropanenitrile instead of 5- (5-(((1r,4r)-4-((tert-butyldimethylsilyl)oxy)cyclohexyl)oxy) -2-(2,2,2-trifluoroethoxy)pyridin-4- yl)-N-(2,6-dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-a mine. MS (ESI): mass calcd. for C25H27N7O3, 473.1; m/z found, 474.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.23 (s, 1H), 8.59 (d, J = 7.2 Hz, 1H), 8.02 (s, 1H), 7.87 (d, J = 1.2 Hz, 1H), 7.09 - 7.00 (m, 2H), 6.95 (s, 1H), 586

6.85 (s, 1H), 4.85 (t, J = 5.6 Hz, 1H), 4.27 (t, J = 4.8 Hz, 2H), 4.11 (s, 2H), 3.78 - 3.66 (m, 2H), 2.45 (s, 3H), 2.30 (s, 3H), 1.34 (s, 6H). Example 679: 1-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)am ino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2-methyl-propan-2-ol. g omethoxy)-4-(2-((2,6-dimethylpyrimidin-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)pyridin-3-ol (120 mg, 0.301 mmol), 2-hydroxy-2- methylpropyl 4-methylbenzenesulfonate2-hydroxy-2-methylpropyl 4-methylbenzenesulfonate (81 mg, 0.33 mmol), KI (50 mg, 0.30 mmol) and DMF (2 mL) was added Cs ₂ CO ₃ (245 mg, 0.753 mmol), and the resultant solution was stirred at 110 °C for 3 h. The reaction mixture was continued to heated to 120 °C and stirred for 3 h. H2O (10 mL) was added to the reaction mixture, and the mixture was extracted with EtOAc (30 mL x 2), combined extracts and concentrated under vacuum to give a residue, which was purified by preparative HPLC DB using a Boston Prime C18150 x 30mm x 5um column ((eluent: 40% to 70% (v/v) water(0.05%NH ₃ H ₂ O+10mM NH ₄ HCO ₃ )-ACN to afford pure product, which was suspended in water (20 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (24.30 mg, 17%) as a white solid. MS (ESI): mass calcd. for C ₂₃ H ₂₄ F ₂ N ₆ O ₃ , 470.1; m/z found, 471.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.40 (d, J = 7.2 Hz, 1H), 7.91 (s, 1H), 7.61 (d, J = 0.8 Hz, 1H), 7.5 (t, J = 73.2, 1H), 7.48 (s, 1H), 7.06 (s, 1H), 6.96 (s, 1H), 6.90 (dd, J=2.0, 7.2 Hz, 1H), 6.61 (s, 1H), 3.89 (s, 2H), 2.60 (s, 3H), 2.45 (s, 3H), 1.99 (br. s., 1H), 1.29 (s, 6H). ¹⁹ F NMR (376 MHz, CDCl3) δ -88.19 (s, 2 F) Example 680: (*R)-3-[[6-(1-cyanoethoxy)-4-[2-[(2,6-dimethylpyrimidin-4- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dim ethyl-propanenitrile. 587

p , ylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6- hydroxypyridin-3-yl)oxy)-2,2-dimethylpropanenitrile. A mixture consisting of 3-((6-chloro-4-(2- ((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyridin-5- yl)pyridin-3-yl)oxy)-2,2- dimethylpropanenitrile (Example 667, Step A, 3.0 g, 6.7 mmol), KOH (1.5 g, 27 mmol), Pd ₂ (dba) ₃ (613 mg, 0.670 mmol), t-BuXphos (284 mg, 0.670 mmol), 1,4-dioxane (30 mL) and H ₂ O (5.4 mL) was purged with N ₂ for 1 min and the mixture was stirred at 120 °C overnight. The reaction mixture was concentrated to dryness under reduced pressure to give the crude product, which was purified by FCC (eluent: MeOH in CH2Cl2 from 0 to 50%) to afford the title product (320 mg, 9%) as a yellow solid. Step B: 3-((6-(1-cyanoethoxy)-4-(2-((2,6-dimethylpyrimidin-4-yl)amin o)pyrazolo[1,5- a]pyridin-5-yl)pyridin-3-yl)oxy)-2,2-dimethylpropanenitrile. A mixture consisting of 3-((4-(2- ((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyridin-5- yl)-6-hydroxypyridin-3-yl)oxy)- 2,2-dimethylpropanenitrile (200 mg, 0.391 mmol), 2-bromopropanenitrile (52.4 mg, 0.391 mmol), Ag2CO3 (324 mg, 1.17 mmol), KI (97.4 mg, 0.587 mmol) and toluene (6 mL) was stirred at 120 °C for 12 h. The reaction mixture was concentrated to dryness under reduced pressure to give the crude product, which was purified by FCC (eluent: MeOH in CH2Cl2 from 0 to 50%) to afford the title product. The crude product was further purified by preparative HPLC using a Boston Prime C18150 x 30 mm x 5 µm (eluent: 50% to 80% (v/v) water(0.05%NH3H2O+10mM NH ₄ HCO ₃ )-ACN to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (30 mg, 16%) as a white solid. Step C: (*R)-3-[[6-(1-cyanoethoxy)-4-[2-[(2,6-dimethylpyrimidin-4- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dim ethyl-propanenitrile.3-((6-(1- cyanoethoxy)-4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazol o[1,5-a]pyridin-5-yl)pyridin-3- 588

yl)oxy)-2,2-dimethylpropanenitrile (30 mg, 0.062 mmol) was purified by SFC-22 over DAICEL CHIRALPAK AD 250 mm x 30 mm, 10 µm (eluent: 40% to 40% (v/v) supercritical water(Neu- IPA). The pure fractions were collected and the volatiles were removed under reduced pressure. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (3.5 mg, 12%) as a white solid. MS (ESI): mass calcd. for C ₂₆ H ₂₆ N ₈ O ₂ , 482.1; m/z found, 483.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ) δ 10.23 (s, 1H), 8.60 (d, J = 7.2 Hz, 1H), 8.12 (s, 1H), 7.90 (d, J=1.2 Hz, 1H), 7.12 (s, 1H), 7.07 - 7.01 (m, 2H), 6.86 (br. s., 1H), 5.72 (q, J=6.8 Hz, 1H), 4.18 (s, 2H), 2.45 (s, 3H), 2.30 (s, 3H), 1.71 (d, J = 6.8 Hz, 3H), 1.35 (s, 6H). Example 681: (*S)-3-[[6-(1-cyanoethoxy)-4-[2-[(2,6-dimethylpyrimidin-4- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dim ethyl-propanenitrile. p . g, was the other peak isolated from the SFC purification in Example 680, Step C. MS (ESI): mass calcd. for C ₂₆ H ₂₆ N ₈ O ₂ , 482.2; m/z found, 483.2 [M+H] ⁺ . 1H NMR (400 MHz, DMSO-d6) δ 10.23 (s, 1H), 8.60 (d, J = 7.2 Hz, 1H), 8.12 (s, 1H),7.90 (d, J=1.2 Hz, 1H), 7.12 (s, 1H), 7.08 - 7.00 (m, 2H), 6.86 (br. s., 1H), 5.72 (q, J=6.8 Hz, 1H), 4.18 (s, 2H), 2.45 (s, 3H), 2.30 (s, 3H), 1.71 (d, J = 6.8 Hz, 3H), 1.35 (s, 6H). Example 682: 3-[[4-[2-[(2-amino-6-methyl-pyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]- 6-(difluoromethoxy)-3-pyridyl]oxy]-2,2-dimethyl-propanenitri le. 589

mg, 0.20 mmol, 1.00 equiv), 2-amino-4-chloro-6- methylpyrimidine (33 mg, 0.22 mmol, 1.1 equiv), cesium carbonate (135 mg, 0.42 mmol, 2.1 equiv), Xantphos Pd G3 (5 mol%) in 1,4-dioxane (3.3 mL) was purged with N2 (evacuate and back-filled with N2 x 3) and the resulting mixture stirred at 90 °C for 16 hour. The crude mixture was then filtered through celite and concentrated in vacuo. The crude oil was purified by reverse phase HPLC (MeCN/H2O with 20 mM NH4OH) to give the title compound (28 mg, 28% yield). MS (ESI): mass calcd. for C23H22F2N8O2, 480.2; m/z found, 481.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 12.69 (s, 1H), 11.24 (s, 1H), 8.68 (dt, J = 7.3, 0.9 Hz, 1H), 8.16 (s, 1H), 7.84 (s, 1H), 7.68 (t, J = 73.1 Hz, 1H), 7.28 (s, 1H), 7.14 (dd, J = 7.2, 2.0 Hz, 1H), 6.34 (s, 1H), 4.21 (s, 2H), 2.30 (s, 3H), 1.35 (s, 6H). Example 683: 3-[[6-(difluoromethoxy)-4-[2-[(6-methylpyrazin-2-yl)amino]py razolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. using a similar method described in Example 682. MS (ESI): mass calcd. for C23H21F2N7O2, 465.2; m/z found, 466.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d6) δ 10.19 (s, 1H), 8.61 (d, J = 7.1 Hz, 1H), 8.50 (s, 1H), 8.14 (s, 1H), 7.92 (q, J = 1.0 Hz, 2H), 7.67 590

(t, J = 73.2 Hz, 1H), 7.27 (s, 1H), 7.05 (dd, J = 7.2, 2.0 Hz, 1H), 6.91 (d, J = 0.8 Hz, 1H), 4.21 (s, 2H), 2.41 (s, 3H), 1.36 (s, 6H). Example 684: 3-[[6-(difluoromethoxy)-4-[2-[(1,5-dimethyl-6-oxo-pyridazin- 3- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dim ethyl-propanenitrile. using a similar method described in Example 682, except XantPhos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C24H23F2N7O3, 495.2; m/z found, 496.2 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 9.78 (s, 1H), 8.56 (d, J = 7.2 Hz, 1H), 8.13 (s, 1H), 7.91 (dd, J = 2.0, 0.9 Hz, 1H), 7.83 – 7.50 (m, 1H), 7.27 (s, 1H), 7.24 (d, J = 1.4 Hz, 1H), 7.06 (dd, J = 7.2, 2.0 Hz, 1H), 6.87 (d, J = 0.9 Hz, 1H), 4.20 (s, 2H), 3.60 (s, 3H), 2.09 (d, J = 1.3 Hz, 3H), 1.35 (s, 6H). Example 685: 3-[[6-(difluoromethoxy)-4-[2-[(6-methylpyrimidin-4-yl)amino] pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. ed using a similar method described in Example 682, except RuPhos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C23H21F2N7O2, 465.1; m/z found, 466.1 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl ₃ ) δ 8.69 (d, J = 1.1 Hz, 1H), 8.41 (dd, J = 7.3, 591

0.9 Hz, 1H), 7.87 (s, 1H), 7.72 (dd, J = 2.0, 0.9 Hz, 1H), 7.56 – 7.27 (m, 2H), 7.01 – 6.97 (m, 2H), 6.64 (s, 1H), 3.97 (s, 2H), 2.49 (s, 3H), 1.41 (s, 6H). Example 686: 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- methyl-3-pyridyl]oxymethyl]cyclobutanecarbonitrile. p p p red using the method described in Example 198 and using 3- (hydroxymethyl)cyclobutane-1-carbonitrile instead of trans-1,4-cyclohexanediol. A subsequent SFC purification step, similar to that described in Example 5, yielded the title compound. MS (ESI): mass calcd. for C ₂₅ H ₂₅ N ₇ O, 439.2; m/z found, 440.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.39 (d, J = 7.2 Hz, 1H), 8.25 (s, 1H), 7.59 (d, J = 1.2 Hz, 1H), 7.52 (s, 1H), 7.18 (s, 1H), 7.09 (s, 1H), 6.90 (dd, J = 2.0, 7.6 Hz, 1H), 6.59 (s, 1H), 4.06 (d, J = 5.2 Hz, 2H), 3.09 - 2.94 (m, 2H), 2.61 (s, 3H), 2.57 (s, 3H), 2.54 - 2.47 (m, 2H), 2.46 (s, 3H), 2.38 - 2.29 (m, 2H). Example 687: 3-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-6- methyl-3-pyridyl]oxymethyl]cyclobutanecarbonitrile. p her isolated fraction from the SFC purification step in Example 686. MS (ESI): mass calcd. for C25H25N7O, 439.2; m/z found, 440.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.43 (d, J = 7.2 Hz, 1H), 8.24 (s, 1H), 7.62 (d, J = 1.2 Hz, 1H), 7.52 (s, 1H), 7.20 592

(s, 1H), 7.10 (s, 1H), 6.96 (dd, J = 2.0, 7.2 Hz, 1H), 6.62 (s, 1H), 4.03 (d, J = 5.2 Hz, 2H), 3.08 - 2.95 (m, 1H), 2.86 - 2.71 (m, 1H), 2.60 (s, 3H), 2.57 (s, 3H), 2.50 - 2.41 (m, 5H), 2.40 - 2.30 (m, 2H). Example 688: 3-[[6-(2,2-difluoroethoxy)-4-[2-(pyridazin-3-ylamino)pyrazol o[1,5-a]pyridin-5- yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. 28 (69 mg, 0.18 mmol, 1.00 equiv), 3-bromopyridazine (32 mg, 0.20 mmol, 1.1 equiv), cesium carbonate (180 mg, 0.55 mmol, 3.1 equiv), Xantphos Pd G3 (10 mol%) in 1,4-dioxane (1.5 mL) was purged with N ₂ (evacuate and back-filled with N ₂ x 3) and the resulting mixture stirred at 90 °C for 16 hour. The crude mixture was then filtered through celite and concentrated in vacuo. The crude oil was purified by reverse phase HPLC (MeCN/H2O with 20 mM NH4OH) to give the title compound (8 mg, 0.017 mmol, 10% yield). MS (ESI): mass calcd. for C ₂₃ H ₂₁ F ₂ N ₇ O ₂ , 465.2; m/z found, 466.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.70 (dd, J = 4.6, 1.4 Hz, 1H), 8.32 (dt, J = 7.2, 0.9 Hz, 1H), 8.07 (s, 1H), 7.95 (dd, J = 9.1, 1.4 Hz, 1H), 7.74 (s, 1H), 7.60 (dd, J = 2.0, 0.9 Hz, 1H), 7.33 (dd, J = 9.1, 4.6 Hz, 1H), 6.89 (dd, J = 7.2, 2.0 Hz, 1H), 6.84 (d, J = 0.5 Hz, 1H), 6.51 (d, J = 0.8 Hz, 1H), 6.06 (tt, J = 55.6, 4.2 Hz, 1H), 4.46 (td, J = 13.5, 4.2 Hz, 2H), 3.84 (s, 2H), 1.32 (s, 6H). Example 689: 3-[[6-(2,2-difluoroethoxy)-4-[2-(pyrazin-2-ylamino)pyrazolo[ 1,5-a]pyridin-5-yl]- 3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. 593

pared using a similar method described in Example 688. MS (ESI): mass calcd. for C ₂₃ H ₂₁ F ₂ N ₇ O ₂ , 465.2; m/z found, 466.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.66 (d, J = 1.5 Hz, 1H), 8.32 (dd, J = 7.3, 1.1 Hz, 1H), 8.13 (dd, J = 2.8, 1.5 Hz, 1H), 8.01 (d, J = 2.6 Hz, 1H), 7.74 (s, 1H), 7.61 (d, J = 2.2 Hz, 2H), 6.89 (dd, J = 7.1, 2.0 Hz, 1H), 6.83 (s, 1H), 6.66 (s, 1H), 6.06 (tt, J = 55.6, 4.2 Hz, 1H), 4.46 (td, J = 13.6, 4.2 Hz, 2H), 3.84 (s, 2H), 1.32 (s, 6H). Example 690: 2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-5-(4- hydroxycyclohexoxy)-2-pyridyl]oxy]acetonitrile. -((tetrahydro-2H-pyran-2- yl)oxy)cyclohexyl)oxy)pyridin-4-yl)-N-(2,6-dimethylpyrimidin -4-yl)pyrazolo[1,5-a]pyridin-2- amine. The title compound was prepared using the method described in Example 664, Step A, and using (trans)-4-((tetrahydro-2H-pyran-2-yl)oxy)cyclohexanol instead of (1r,4r)-4-((tert- butyldimethylsilyl)oxy)cyclohexanol. Step B: 4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyrid in-5-yl)-5- (((1r,4r)-4-((tetrahydro-2H-pyran-2-yl)oxy)cyclohexyl)oxy)py ridin-2-ol. The title compound was prepared using the method described in Example 677, Step A, and using 5-(2-chloro-5-(((1r,4r)- 594

4-((tetrahydro-2H-pyran-2-yl)oxy)cyclohexyl)oxy)pyridin-4 -yl)-N-(2,6-dimethylpyrimidin-4- yl)pyrazolo[1,5-a]pyridin-2-amine instead of 5-(5-(((trans)-4-((tert- butyldimethylsilyl)oxy)cyclohexyl)oxy)-2-chloropyridin-4-yl) -N-(2,6-dimethylpyrimidin-4- yl)pyrazolo[1,5-a]pyridin-2-amine. Step C: 4-(2-((2,6-dimethylpyrimidin-4-yl)amino)pyrazolo[1,5-a]pyrid in-5-yl)-5- (((1r,4r)-4-hydroxycyclohexyl)oxy)pyridin-2-ol. A solution of 4-(2-((2,6-dimethylpyrimidin-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-5-(((1r,4r)-4-((tetrah ydro-2H-pyran-2- yl)oxy)cyclohexyl)oxy)pyridin-2-ol (470 mg, 0.886 mmol) and HCl/1,4-dioxane (10 mL,4 M) was stirred at r.t. for 1 h. The mixture was concentrated under reduced pressure. The mixture was neutralized with aq. NaHCO ₃ and concentrated under reduced pressure. Then the mixture was slurried in (10 mL MeCN and 2 mL MeOH) and collected by filtration and afford the crude compound (400 mg, crude) as a yellow solid. Step D: 2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]p yridin-5-yl]-5-(4- hydroxycyclohexoxy)-2-pyridyl]oxy]acetonitrile. The title compound was prepared using methods analogous to those described in Example 680, Step B. MS (ESI): mass calcd. for C ₂₆ H ₂₇ N ₇ O ₃ , 485.2; m/z found, 486.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ) δ 8.37 (d, J = 7.2 Hz, 1H), 7.94 (s, 1H), 7.63 (s, 1H), 7.43 (s, 1H), 7.07 (s, 1H), 6.96 - 6.91 (m, 1H), 6.89 (s, 1H), 6.61 (s, 1H), 5.02 (s, 2H), 4.25 - 4.11 (m, 1H), 3.81 - 3.68 (m, 1H), 2.61 (s, 3H), 2.46 (s, 3H), 2.12 - 2.00 (m, 2H), 1.96 - 1.86 (m, 2H), 1.53 - 1.46 (m, 2H), 1.44 - 1.32 (m, 2H). Example 691: 3-[[4-[2-[(6-aminopyrazin-2-yl)amino]pyrazolo[1,5-a]pyridin- 5-yl]-6- (difluoromethoxy)-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile . 95

The title compound was prepared using a similar method described in Example 682, except tBuXPhos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C22H20F2N8O2, 466.2; m/z found, 467.1 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl ₃ ) δ 8.39 (dt, J = 7.1, 0.9 Hz, 1H), 8.03 (s, 1H), 7.86 (s, 1H), 7.75 (s, 1H), 7.67 (dd, J = 2.0, 0.9 Hz, 1H), 7.55 – 7.25 (m, 2H), 6.99 (s, 1H), 6.94 (dd, J = 7.2, 2.0 Hz, 1H), 6.70 (d, J = 0.8 Hz, 1H), 4.68 (s, 2H), 3.96 (s, 2H), 1.40 (s, 6H). Example 692: 3-[[6-(difluoromethoxy)-4-[2-[(1-methylpyrazol-4-yl)amino]py razolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. d using a similar method described in Example 682, except tBuXPhos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C ₂₂ H ₂₁ F ₂ N ₇ O ₂ , 453.2; m/z found, 454.1 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl3) δ 8.28 (dt, J = 7.2, 0.9 Hz, 1H), 7.85 (s, 1H), 7.61 (s, 1H), 7.55 – 7.24 (m, 3H), 6.97 (s, 1H), 6.80 (dd, J = 7.2, 2.0 Hz, 1H), 5.91 (d, J = 0.8 Hz, 1H), 5.82 (s, 1H), 3.94 (s, 2H), 3.90 (s, 3H), 1.39 (s, 6H). Example 693: 3-[[6-(2,2-difluoroethoxy)-4-[2-[(1,5-dimethyl-6-oxo-pyridaz in-3- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dim ethyl-propanenitrile. 6

The title compound was prepared using a similar method described in Example 688. MS (ESI): mass calcd. for C25H25F2N7O3, 509.2; m/z found, 510.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.34 (dt, J = 7.2, 1.0 Hz, 1H), 7.85 (s, 1H), 7.73 (dd, J = 2.0, 0.9 Hz, 1H), 7.21 – 7.16 (m, 1H), 7.13 (d, J = 1.3 Hz, 1H), 7.02 (dd, J = 7.2, 2.0 Hz, 1H), 6.93 (s, 1H), 6.76 (d, J = 0.8 Hz, 1H), 6.16 (tt, J = 55.6, 4.2 Hz, 1H), 4.56 (td, J = 13.6, 4.2 Hz, 2H), 3.94 (s, 2H), 3.79 (s, 3H), 2.28 (d, J = 1.2 Hz, 3H), 1.42 (s, 6H). Example 694: 3-[[6-(difluoromethoxy)-4-[2-(3-pyridylamino)pyrazolo[1,5-a] pyridin-5-yl]-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile. d using a similar method described in Example 682, except tBuXPhos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C23H20F2N6O2, 450.2; m/z found, 451.1 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl ₃ ) δ 8.59 – 8.57 (m, 1H), 8.35 (dt, J = 7.1, 0.9 Hz, 1H), 8.19 (dd, J = 4.6, 1.4 Hz, 1H), 7.93 – 7.87 (m, 1H), 7.85 (s, 1H), 7.64 (dd, J = 2.0, 0.9 Hz, 1H), 7.55 – 7.26 (m, 1H), 7.26 – 7.23 (m, 1H), 6.98 (s, 1H), 6.89 (dd, J = 7.2, 2.0 Hz, 1H), 6.72 (s, 1H), 6.19 (d, J = 0.8 Hz, 1H), 3.95 (s, 2H), 1.40 (s, 6H). Example 695: 3-[[6-(difluoromethoxy)-4-[2-[[5-(morpholinomethyl)-2- pyridyl]amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2, 2-dimethyl-propanenitrile. 597

ed using a similar method described in Example 682, except tBuXPhos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C28H29F2N7O3, 549.2; m/z found, 550.1 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl ₃ ) δ 8.42 – 8.36 (m, 1H), 8.20 – 8.18 (m, 1H), 7.86 (s, 1H), 7.83 (s, 1H), 7.65 (dd, J = 2.0, 0.9 Hz, 1H), 7.61 (dd, J = 8.5, 2.3 Hz, 1H), 7.55 – 7.25 (m, 2H), 6.99 (s, 1H), 6.91 (dd, J = 7.1, 2.0 Hz, 1H), 6.62 (d, J = 0.8 Hz, 1H), 3.95 (s, 2H), 3.70 (t, J = 4.7 Hz, 4H), 3.44 (s, 2H), 2.46 – 2.44 (m, 4H), 1.39 (s, 6H). Example 696: 3-[[6-(2,2-difluoroethoxy)-4-[2-[(6-methylpyrazin-2-yl)amino ]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. a similar method described in Example 688. MS (ESI): mass calcd. for C ₂₄ H ₂₃ F ₂ N ₇ O ₂ , 479.2; m/z found, 480.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.58 (s, 1H), 8.37 (dt, J = 7.2, 0.9 Hz, 1H), 7.98 (s, 1H), 7.82 (s, 1H), 7.68 (dd, J = 2.0, 0.9 Hz, 1H), 7.31 (s, 1H), 6.96 (dd, J = 7.2, 2.0 Hz, 1H), 6.91 (s, 1H), 6.70 (d, J = 0.8 Hz, 1H), 6.14 (tt, J = 55.6, 4.2 Hz, 1H), 4.54 (td, J = 13.5, 4.2 Hz, 2H), 3.91 (s, 2H), 2.49 (t, J = 0.7 Hz, 3H), 1.39 (s, 6H). Example 697: 3-[[6-(2,2-difluoroethoxy)-4-[2-[(1-methyl-6-oxo-pyridazin-3 - yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dim ethyl-propanenitrile. 598

a similar method described in Example 688. MS (ESI): mass calcd. for C ₂₄ H ₂₃ F ₂ N ₇ O ₃ , 495.2; m/z found, 496.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) δ 8.23 (dt, J = 7.2, 0.9 Hz, 1H), 7.74 (s, 1H), 7.62 (dd, J = 2.0, 0.9 Hz, 1H), 7.24 (d, J = 9.8 Hz, 1H), 6.91 – 6.81 (m, 4H), 6.60 (d, J = 0.8 Hz, 1H), 6.06 (tt, J = 55.6, 4.2 Hz, 1H), 4.46 (td, J = 13.5, 4.1 Hz, 2H), 3.84 (s, 2H), 3.68 (s, 3H), 1.32 (s, 6H). Example 698: 3-[[6-(difluoromethoxy)-4-[2-[(4-methoxypyrimidin-2-yl)amino ]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. sing a similar method described in Example 682, except tBuXPhos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C23H21F2N7O3, 481.2; m/z found, 482.1 [M+H] ⁺ . ¹ H NMR (500 MHz, DMSO-d ₆ ) δ 10.50 (s, 1H), 8.63 – 8.56 (m, 1H), 8.14 (s, 1H), 7.95 (dd, J = 2.1, 1.0 Hz, 1H), 7.84 – 7.50 (m, 2H), 7.27 (s, 1H), 7.19 (s, 1H), 7.09 (dd, J = 7.2, 2.0 Hz, 1H), 6.14 (s, 1H), 4.21 (s, 2H), 3.31 (s, 3H), 1.36 (s, 6H). Example 699: 3-[[6-(difluoromethoxy)-4-[2-[(1-methyl-1,2,4-triazol-3-yl)a mino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. 599

p p p d using a similar method described in Example 682, except tBuXPhos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C ₂₁ H ₂₀ F ₂ N ₈ O ₂ , 454.2; m/z found, 455.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3) CDCl 8.63 - 8.57 (m, 1H), 8.46 (d, J = 3.1 Hz, 1H), 7.87 (s, 1H), 7.85 - 7.81 (m, 1H), 7.61 (dd, J = 2.0, 0.9 Hz, 1H), 7.60 - 7.22 (m, 1H), 6.99 (s, 1H), 6.93 (dd, J = 7.2, 2.0 Hz, 1H), 6.90 (d, J = 0.8 Hz, 1H), 3.94 (s, 2H), 3.89 (d, J = 0.6 Hz, 3H), 1.39 (s, 6H). Example 700: 3-[[6-(difluoromethoxy)-4-[2-[[2-(ethylamino)-6-(trifluorome thyl)pyrimidin-4- yl]amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dim ethyl-propanenitrile. similar method descrided in Example 502. MS (ESI): mass calcd. for C ₂₅ H ₂₃ F ₅ N ₈ O ₂ , 562.2; m/z found, 563.2 [M+H] ⁺ . ¹ H NMR (600 MHz, CDCl ₃ ) δ 8.42 (d, J = 7.3 Hz, 1H), 7.88 (s, 1H), 7.68 (s, 1H), 7.54 – 7.28 (m, 1H), 7.08 (s, 1H), 7.00 (s, 1H), 6.57 (s, 1H), 3.97 (s, 2H), 3.51 (d, J = 5.6 Hz, 2H), 2.70 – 2.66 (m, 3H), 1.41 (s, 6H), 1.33 (s, 3H). 600

Example 701: 2-[[5-[5-(2-cyano-2-methyl-propoxy)-2-(difluoromethoxy)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-N-(2-hydroxy-2-me thyl-propyl)-6-methyl-pyridine- 4-carboxamide. ing a similar method descrided in Example 502. MS (ESI): mass calcd. for C29H31F2N7O4, 579.2; m/z found, 580.2 [M+H] ⁺ . ¹ H NMR (600 MHz, CDCl3) δ 8.38 (dt, J = 7.2, 0.9 Hz, 1H), 7.87 (s, 1H), 7.78 (s, 1H), 7.54 – 7.28 (m, 2H), 7.01 (s, 1H), 6.99 (dd, J = 7.2, 2.0 Hz, 1H), 6.85 (s, 1H), 6.71 (s, 1H), 5.22 (s, 1H), 3.97 (s, 2H), 3.56 – 3.48 (m, 2H), 3.01 (d, J = 7.6 Hz, 4H), 1.41 (s, 6H), 1.39 – 1.33 (m, 6H). Example 702: 3-[[6-(difluoromethoxy)-4-[2-[(1-methyl-6-oxo-pyridazin-3- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dim ethyl-propanenitrile. ing a similar method described in Example 682, except Brettphos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C23H21F2N7O3, 481.2; m/z found, 482.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ): δ 8.57 (d, J = 7.2 Hz, 1H), 8.14 (s, 1H), 7.93 (d, J = 1.6 Hz, 1H), 7.67 (t, J = 73.2 Hz, 1H), 7.39 (d, J = 10.0 Hz, 1H), 7.27 (s, 1H), 7.07 (dd, J = 2.0, 7.2 Hz, 1H), 6.93 (d, J = 9.6 Hz, 1H), 6.90 (s, 1H), 4.21 (s, 2H), 3.60 (s, 3H), 1.36 (s, 6H) ¹⁹ F NMR (376 MHz, DMSO-d ₆ ): -86.43 (s, 2F) 601

Example 703: 3-[[4-[2-[(2-tert-butyl-6-methyl-pyrimidin-4-yl)amino]pyrazo lo[1,5-a]pyridin-5- yl]-6-(difluoromethoxy)-3-pyridyl]oxy]-2,2-dimethyl-propanen itrile. , 0.402 mmol) and 2-(tert-butyl)-4-chloro-6- methylpyrimidine (148 mg, 0.804 mmol) in NMP (3 mL) was stirred at 120 °C for 2 hrs. The reaction was then cooled to 23 °C and purified by preparative HPLC DB using a Boston Prime C18150 x 30 mm x 5 µm column (eluent: 70% to 100% (v/v)water(0.05%NH3H2O+10mM NH ₄ HCO ₃ )-ACN to afford pure product, which was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (26 mg, 12%) as a yellow solid. MS (ESI): mass calcd. for C27H29F2N7O2, 521.2; m/z found, 522.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ): δ 10.23 (br. s., 1H), 8.62 (d, J = 7.2 Hz, 1H), 8.14 (s, 1H), 8.01 (s, 1H), 7.68 (t, J = 73.2 Hz, 1H), 7.32 (s, 1H), 7.16 - 7.04 (m, 2H), 6.81 (br. s., 1H), 4.22 (s, 2H), 2.33 (s, 3H), 1.39 - 1.35 (m, 15H) ¹⁹ F NMR (376 MHz, DMSO-d6): -86.43 (s, 2F) Example 704: 3-[[4-[2-[(5-aminopyridazin-3-yl)amino]pyrazolo[1,5-a]pyridi n-5-yl]-6- (difluoromethoxy)-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile . using a similar method described in Example 682, except tBuXPhos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C ₂₂ H ₂₀ F ₂ N ₈ O ₂ , 466.2; m/z found, 467.1 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl ₃ ) δ 12.76 (s, 1H), 8.38 (d, J = 7.6 Hz, 1H), 602

7.94 (d, J = 2.3 Hz, 1H), 7.87 (s, 1H), 7.67 (s, 1H), 7.55 – 7.39 (m, 1H), 7.04 (d, J = 8.2 Hz, 1H), 6.97 (s, 1H), 6.48 (s, 1H), 3.98 (s, 2H), 1.42 (s, 6H). Example 705: 3-[[4-[2-[(2-aminopyrimidin-4-yl)amino]pyrazolo[1,5-a]pyridi n-5-yl]-6- (difluoromethoxy)-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile . a similar method described in Example 682, except tBuXPhos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C ₂₂ H ₂₀ F ₂ N ₈ O ₂ , 466.2; m/z found, 467.0 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl3) δ 8.41 – 8.35 (m, 1H), 8.07 (d, J = 5.8 Hz, 1H), 7.87 (s, 1H), 7.71 (dd, J = 2.0, 0.9 Hz, 1H), 7.59 (s, 1H), 7.55 – 7.37 (m, 1H), 7.00 (s, 1H), 6.97 (dd, J = 7.2, 2.0 Hz, 1H), 6.70 (s, 1H), 6.62 (d, J = 5.8 Hz, 1H), 5.00 (s, 2H), 3.96 (s, 2H), 1.41 (s, 6H). Example 706: 3-[[6-(difluoromethoxy)-4-[2-(4,5,6,7-tetrahydropyrazolo[1,5 -a]pyrazin-2- ylamino)pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dime thyl-propanenitrile. sing a similar method described in Example 682, except tBuXPhos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C24H24F2N8O2, 494.2; m/z found, 495.1 [M+H] ⁺ . ¹ H NMR (500 MHz, CDCl ₃ ) δ 8.33 – 8.25 (m, 1H), 7.86 (s, 1H), 7.58 (dd, J = 1.9, 0.9 Hz, 1H), 7.56 – 7.36 (m, 1H), 6.98 (s, 1H), 6.84 (dd, J = 7.2, 2.0 Hz, 1H), 6.68 (s, 603

1H), 6.34 (d, J = 0.8 Hz, 1H), 5.97 (s, 1H), 4.05 (s, 2H), 4.03 (t, J = 5.6 Hz, 2H), 3.94 (s, 2H), 3.32 (t, J = 5.6 Hz, 2H), 1.39 (s, 6H). Example 707: 3-[[6-(difluoromethoxy)-4-[2-(pyrazin-2-ylamino)pyrazolo[1,5 -a]pyridin-5-yl]-3- pyridyl]oxy]-2,2-dimethyl-propanenitrile. using a similar method described in Example 682, except Brettphos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C ₂₂ H ₁₉ F ₂ N ₇ O ₂ , 451.2; m/z found, 452.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6): δ 10.33 (s, 1H), 8.67 - 8.60 (m, 2H), 8.23 (dd, J = 1.2, 2.4 Hz, 1H), 8.14 (s, 1H), 8.02 (d, J = 2.8 Hz, 1H), 7.92 (d, J = 1.2 Hz, 1H), 7.68 (t, J = 73.2 Hz, 1H), 7.28 (s, 1H), 7.07 (dd, J = 2.0, 7.2 Hz, 1H), 6.94 (s, 1H), 4.21 (s, 2H), 1.36 (s, 6H) ¹⁹ F NMR (376 MHz, DMSO-d ₆ ): -86.49 (s, 2F) Example 708: 3-[[6-(difluoromethoxy)-4-[2-(pyridazin-3-ylamino)pyrazolo[1 ,5-a]pyridin-5-yl]- 3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. using a similar method described in Example 682, except Brettphos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C22H19F2N7O2, 451.2; m/z found, 452.4 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ): δ 9.22 (s, 1H), 8.78 (dd, J = 1.2, 4.8 Hz, 1H), 8.47 (d, J = 7.2 Hz, 1H), 8.12 (dd, J = 1.2, 8.8 Hz, 1H), 7.87 (s, 1H), 7.69 (d, J = 1.2 Hz, 604 1H), 7.50 (t, J = 72.8 Hz, 1H), 7.46 - 7.41 (m, 1H), 7.01 (s, 1H), 6.98 (dd, J = 2.0, 7.2 Hz, 1H), 6.73 (s, 1H), 3.97 (s, 2H), 1.41 (s, 6H) ¹⁹ F NMR (376 MHz, CDCl3): -88.29 (s, 2F) Example 709: 3-[[6-(difluoromethoxy)-4-[2-[(5-methylpyrazin-2-yl)amino]py razolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. using a similar method described in Example 682, except Brettphos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C ₂₃ H ₂₁ F ₂ N ₇ O ₂ , 465.2; m/z found, 466.4 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3): δ 8.67 (d, J = 1.6 Hz, 1H), 8.39 (d, J = 7.2 Hz, 1H), 8.09 (s, 1H), 7.87 (s, 1H), 7.69 (d, J = 1.2 Hz, 1H), 7.50 (t, J = 73.2 Hz, 1H), 7.44 (s, 1H), 7.00 (s, 1H), 6.95 (dd, J = 1.6, 6.8 Hz, 1H), 6.70 (s, 1H), 3.96 (s, 2H), 2.50 (s, 3H), 1.41 (s, 6H) ¹⁹ F NMR (376 MHz, CDCl ₃ ): -88.30 (s, 2F) Example 710: 3-[[6-(difluoromethoxy)-4-[2-[(6-methyl-2-morpholino-pyrimid in-4- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dim ethyl-propanenitrile. N ^HN _N r method described in Example 682, except tBuXPhos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C27H28F2N8O3, 550.2; m/z found, 551.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ): δ 10.06 (s, 1H), 8.60 (d, J = 7.2 Hz, 1H), 8.13 (s, 1H), 8.05 (d, J = 1.2 Hz, 1H), 7.68 (t, J = 73.2 Hz, 1H), 7.32 (s, 1H), 7.08 (dd, J = 2.0, 605

7.2 Hz, 1H), 6.96 (s, 1H), 6.27 (s, 1H), 4.22 (s, 2H), 3.72 - 3.65 (m, 8H), 2.18 (s, 3H), 1.37 (s, 6H) Example 711: 3-[[6-(difluoromethoxy)-4-[2-[(6-methylpyridazin-3-yl)amino] pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. mg, 0.268 mmol), 3-chloro-6-methylpyridazine (68 mg, 0.54 mmol), conc. HCl (0.05 mL, 0.60 mmol) in NMP (1 mL) was stirred at 140 °C in a microwave for 1 hr before cooling to 23 °C. The crude mixture was purified by preparative HPLC using a Boston Prime C18150 x 30mm x 5 um column (eluent: 40% to 70% (v/v) water(0.05%NH ₃ H ₂ O+10mM NH ₄ HCO ₃ )-ACN) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (47 mg, 37%) as a yellow solid. MS (ESI): mass calcd. for C ₂₃ H ₂₁ F ₂ N ₇ O ₂ , 465.2; m/z found, 466.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ): δ 10.08 (s, 1H), 8.60 (d, J = 7.2 Hz, 1H), 8.14 (s, 1H), 7.94 (d, J = 1.2 Hz, 1H), 7.68 (t, J = 73.2 Hz, 1H), 7.55 (d, J = 9.2 Hz, 1H), 7.41 (d, J = 9.2 Hz, 1H), 7.29 (s, 1H), 7.05 (dd, J = 2.0, 7.2 Hz, 1H), 6.93 (s, 1H), 4.21 (s, 2H), 2.53 - 2.52 (m, 3H), 1.37 (s, 6H). ¹⁹ F NMR (376 MHz, DMSO-d6): - 86.45 (s, 2F) Example 712: 3-[[6-(difluoromethoxy)-4-[2-[[6-(1-hydroxy-1-methyl-ethyl)p yridazin-3- yl]amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dim ethyl-propanenitrile. 606

ing a similar method described in Example 682, except Brettphos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C25H25F2N7O3, 509.2; m/z found, 510.4 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ): δ 10.16 (s, 1H), 8.61 (d, J = 7.2 Hz, 1H), 8.14 (s, 1H), 7.95 (d, J = 1.2 Hz, 1H), 7.75 (d, J = 9.2 Hz, 1H), 7.69 (t, J = 73.2 Hz, 1H), 7.55 (d, J = 9.2 Hz, 1H), 7.30 (s, 1H), 7.06 (dd, J = 2.0, 7.2 Hz, 1H), 7.02 (s, 1H), 5.33 (s, 1H), 4.22 (s, 2H), 1.52 (s, 6H), 1.37 (s, 6H) ¹⁹ F NMR (376 MHz, DMSO-d6): -86.51 (s, 2F) Example 713: 3-[[6-(difluoromethoxy)-4-[2-[[5-(1-hydroxy-1-methyl-ethyl)p yrazin-2- yl]amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dim ethyl-propanenitrile. ing a similar method described in Example 682, except Brettphos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C ₂₅ H ₂₅ F ₂ N ₇ O ₃ , 509.2; m/z found, 510.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6): δ 10.19 (s, 1H), 8.61 (d, J = 7.2 Hz, 1H), 8.58 (d, J = 1.6 Hz, 1H), 8.44 (d, J = 1.2 Hz, 1H), 8.14 (s, 1H), 7.91 (d, J = 0.8 Hz, 1H), 7.68 (t, J = 72.8 Hz, 1H), 7.28 (s, 1H), 7.05 (dd, J = 2.0, 7.6 Hz, 1H), 6.88 (s, 1H), 5.23 (s, 1H), 4.21 (s, 2H), 1.45 (s, 6H), 1.36 (s, 6H) ¹⁹ F NMR (376 MHz, DMSO-d6): -81.72 (s, 1H) Example 714: 3-[[6-(difluoromethoxy)-4-[2-[(1-methylpyrazol-3-yl)amino]py razolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. 607

sing a similar method described in Example 682, except tBuXPhos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C22H21F2N7O2, 453.2; m/z found, 454.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6): δ 9.12 (s, 1H), 8.48 (d, J = 7.2 Hz, 1H), 8.13 (s, 1H), 7.87 - 7.49 (m, 3H), 7.25 (s, 1H), 6.92 (dd, J = 1.6, 6.8 Hz, 1H), 6.42 (s, 1H), 6.07 (d, J = 2.0 Hz, 1H), 4.20 (s, 2H), 3.73 (s, 3H), 1.36 (s, 6H) ¹⁹ F NMR (376 MHz, DMSO-d6): - 81.70 (s, 1H) Example 715: 2-[[5-[5-(2-cyano-2-methyl-propoxy)-2-(difluoromethoxy)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]amino]-N,6-dimethyl-pyri dine-4-carboxamide. ing a similar method described in Example 682, except Brettphos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C ₂₆ H ₂₅ F ₂ N ₇ O ₃ , 521.2; m/z found, 522.4 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ): δ 9.96 (s, 1H), 8.58 (d, J = 7.2 Hz,1H), 8.51 (q, J = 4.4 Hz,1H), 8.14 (s, 1H), 7.90 (d, J = 1.2 Hz, 1H), 7.67 (t, J = 73.2 Hz, 1H), 7.48 (s, 1H), 7.28 (s, 1H), 7.03 (dd, J = 2.0, 7.2 Hz, 1H), 6.99 (s, 1H), 6.93 (s, 1H), 4.21 (s, 2H), 2.78 (d, J = 4.4 Hz, 3H), 2.46 (s, 3H), 1.36 (s, 6H) ¹⁹ F NMR (376 MHz, DMSO-d ₆ ): -86.44 (s, 2F) Example 716: 3-[[6-(difluoromethoxy)-4-[2-(5,6,7,8-tetrahydro-2,7-naphthy ridin-3- ylamino)pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dime thyl-propanenitrile. 608

using a similar method described in Example 682, except Brettphos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C26H25F2N7O2, 505.2; m/z found, 506.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ): δ 9.57 (s, 1H), 8.55 (d, J = 7.2 Hz, 1H), 8.13 (s, 1H), 7.91 (s, 1H), 7.87 - 7.48 (m, 2H), 7.26 (s, 1H), 7.08 (s, 1H), 6.98 (dd, J = 2.0, 7.2 Hz, 1H), 6.79 (s, 1H), 4.21 (s, 2H), 3.78 (s, 2H), 2.92 ( t, J = 5.6 Hz, 2H), 2.66 ( t, J = 5.6 Hz, 2H), 1.36 (s, 6H) ¹⁹ F NMR (376 MHz, DMSO-d6): -86.46 (s, 2F) Example 717: 3-[[6-(difluoromethoxy)-4-[2-[(2-methylpyrimidin-4-yl)amino] pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. ing a similar method described in Example 682, except tBuXPhos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C ₂₃ H ₂₁ F ₂ N ₇ O ₂ , 465.2; m/z found, 466.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6) δ 10.28 (s, 1H), 8.55 (dt, J = 7.2, 0.9 Hz, 1H), 8.21 (d, J = 5.9 Hz, 1H), 8.08 (s, 1H), 7.87 (dd, J = 2.0, 0.9 Hz, 1H), 7.60 (t, J = 73.2 Hz, 1H), 7.21 (s, 1H), 7.11 (s, 1H), 7.00 (dd, J = 7.2, 2.0 Hz, 1H), 6.82 (s, 1H), 4.14 (s, 2H), 1.29 (s, 6H). Example 718: 3-[[6-(difluoromethoxy)-4-[2-(5,6,7,8-tetrahydro-2,6-naphthy ridin-3- ylamino)pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dime thyl-propanenitrile. 609 milar method described in Example 682, except Brettphos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C26H25F2N7O2, 505.2; m/z found, 506.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ): δ 9.55 (s, 1H), 8.55 (d, J = 7.2 Hz, 1H), 8.13 (s, 1H), 7.95 (s, 1H), 7.84 (s, 1H), 7.67 (t, J = 73.2 Hz, 1H), 7.26 (s, 1H), 7.02 (s, 1H), 6.98 (dd, J = 1.6, 7.2 Hz, 1H), 6.78 (s, 1H), 4.21 (s, 2H), 3.80 (s, 2H), 2.93 (t, J = 5.6 Hz, 2H), 2.60 (t, J = 5.6 Hz, 2H), 1.36 (s, 6H) ¹⁹ F NMR (376 MHz, DMSO-d6): -86.48 (s, 2F) Example 719: 3-[[6-(difluoromethoxy)-4-[2-(5,6,7,8-tetrahydro-1,7-naphthy ridin-2- ylamino)pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dime thyl-propanenitrile. a similar method described in Example 682, except Brettphos Pd G3 was used as the catalyst. MS (ESI): mass calcd. for C ₂₆ H ₂₅ F ₂ N ₇ O ₂ , 505.2; m/z found, 506.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6): δ 9.68 (s, 1H), 8.55 (d, J = 7.2 Hz, 1H), 8.13 (s, 1H), 7.86 (s, 1H), 7.68 (t, J = 73.2 Hz, 1H), 7.34 (d, J = 8.4 Hz, 1H), 7.28 (s, 1H), 7.17 (d, J = 8.4 Hz, 1H), 6.99 (dd, J = 2.0, 7.2 Hz, 1H), 6.82 (s, 1H), 4.21 (s, 2H), 3.79 (s, 2H), 2.94 (t, J = 5.6 Hz, 2H), 2.61 (t, J = 5.0 Hz, 2H), 1.36 (s, 6H) ¹⁹ F NMR (376 MHz, DMSO-d6): -86.48 (d, J = 73.32 Hz, 2F) Example 720: 1-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)am ino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxymethyl]cyclopropanecarbonitrile . 610

ing a similar method described in Example 329. MS (ESI): mass calcd. for C24H21F2N7O2, 477.2; m/z found, [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6): δ 10.25 (s, 1H), 8.62 (d, J = 7.2 Hz, 1H), 8.08 (s, 1H), 7.97 (s, 1H), 7.67 (t, J = 73.2 Hz, 1H), 7.28 (s, 1H), 7.11 (dd, J = 1.6, 7.2 Hz, 1H), 7.02 (br s, 1H), 6.91 (br s, 1H), 4.21 (s, 2H), 2.46 (s, 3H), 2.31 (s, 3H), 1.38 - 1.32 (m, 2H), 1.17 - 1.12 (m, 2H) ¹⁹ F NMR (376 MHz, DMSO-d6): -86.50 (s, 2F) Example 721: (*R)-2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1, 5-a]pyridin-5-yl]- 5-(4-hydroxycyclohexoxy)-2-pyridyl]oxy]propanenitrile. ing a similar method described in Example 672. The material was separated by SFC with DAICEL CHIRALPAK AD (250 mm x 50 mm, 10 um), column (eluent: 50% to 50% (v/v) IPA with 0.1% NH ₃ .H ₂ O in supercritical CO ₂ ) to afford pure product. The title compound was the first to elute. MS (ESI): mass calcd. for C ₂₇ H ₂₉ N ₇ O ₃ , 499.2; m/z found, 500.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl3): δ 8.36 (d, J = 7.2 Hz, 1H), 7.94 (s, 1H), 7.62 (s, 1H), 7.41 (s, 1H), 7.07 (s, 1H), 6.97 - 6.92 (m, 1H), 6.86 (s, 1H), 6.60 (s, 1H), 5.64 (q, J = 6.8 Hz, 1H), 4.20 - 4.11 (m, 1H), 3.79 - 3.69 (m, 1H), 2.61 (s, 3H), 2.45 (s, 3H), 2.12 - 2.00 (m, 2H), 1.96 - 1.86 (m, 2H), 1.78 (d, J = 6.8 Hz, 3H), 1.57 - 1.48 (m, 2H), 1.41 - 1.33 (m, 2H) 611

Example 722: 3-[2-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5- a]pyridin-5-yl]-6- methyl-3-pyridyl]oxy]ethyl]oxetane-3-carbonitrile. ed using a similar method described in Example 329. In Step A 4- iodo-6-methylpyridin-3-ol was used instead of 4-iodo-6-methoxypyridin-3-ol. MS (ESI): mass calcd. for C ₂₅ H ₂₅ N ₇ O ₂ , 455.2; m/z found, 456.1 [M+H] ⁺ . ¹ H NMR (400 MHz, CDCl ₃ ): δ 8.40 (d, J = 7.2 Hz, 1H), 8.29 (s, 1H), 7.60 (s, 1H), 7.51 (d, J = 0.8 Hz, 1H), 7.13 (s, 1H), 7.10 (s, 1H), 6.81 (dd, J = 1.6, 7.2 Hz, 1H), 6.60 (s, 1H), 4.77 (d, J = 6.4 Hz, 2H), 4.46 (d, J = 6.4 Hz, 2H), 4.32 (t, J = 5.2 Hz, 2H), 2.61 (s, 3H), 2.57 (s, 3H), 2.48 (t, J = 5.6 Hz, 2H), 2.46 (s, 3H) Example 723: N-[5-[2-(difluoromethoxy)-5-(4-hydroxycyclohexoxy)-4-pyridyl ]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. Step A. N-(5-(2-chloro-5-(((1r,4r)-4-((tetrahydro-2H-pyran-2- yl)oxy)cyclohexyl)oxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide. NaH (1.11 g, 27.8 mmol) was added to a solution of N-(5-(2-chloro-5-fluoropyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (3.1 g, 9.3 mmol), 3-hydroxy-2,2- dimethylpropanenitrile (2.6 g, 13 mmol), and DMA (50 mL) at 0 °C. Then the reaction mixture 612

was sitrried for 1 h at room temperature. The mixture mixture was poured into aq. Sat. NH4Cl (100 mL) and the suspension isolated via filtration. The filter cake was washed with water (30 mL x 3) before drying under reduced pressure to afford the title compound (6 g, crude) as a yellow solid. Step B. N-(5-(2-hydroxy-5-(((1r,4r)-4-((tetrahydro-2H-pyran-2- yl)oxy)cyclohexyl)oxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide. A mixture consisting of N-(5-(2-chloro-5-(((1r,4r)-4-((tetrahydro-2H-pyran-2- yl)oxy)cyclohexyl)oxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide (3.0 g, 5.9 mmol), Pd2(dba)3 (538 mg, 0.587 mmol), t-BuXphos (249 mg, 0.587 mmol), KOH (1.65 g, 29.4 mmol), 1,4-dioxane (20 mL), and H ₂ O (5 mL) was was stirred at 100 °C for 2 h under N ₂ . The reaction mixture was directly concentrated to afford the crude product, which was purified by FCC (EA:EE= 1:0 to 1:1) to afford the title compound (1 g, 24%) as a yellow solid. Step C. N-(5-(2-(difluoromethoxy)-5-(((1r,4r)-4-((tetrahydro-2H-pyra n-2- yl)oxy)cyclohexyl)oxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide. A mixture consisting of N-(5-(2-hydroxy-5-(((1r,4r)-4-((tetrahydro-2H-pyran-2- yl)oxy)cyclohexyl)oxy)pyridin-4-yl)pyrazolo[1,5-a]pyridin-2- yl)cyclopropanecarboxamide (150 mg, 0.305 mmol), diethyl (bromodifluoromethyl)phosphonate (81.3 mg, 0.305 mmol), KF (35.4 mg, 0.609 mmol), and ACN (3 mL) was stirred for overnight at room temperature. The reaction mixture was purified by preparative HPLC using a Boston Prime C18150 x 30 mm x 5 µm column (eluent: 70% to 100% (v/v) CH ₃ CN and H ₂ O with 0.05%NH ₃ H ₂ O and 10 mM NH4HCO3) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (40 mg, 24%) as a yellow solid. Step D. N-[5-[2-(difluoromethoxy)-5-(4-hydroxycyclohexoxy)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. A solution consisting of N-(5-(2- (difluoromethoxy)-5-(((1r,4r)-4-((tetrahydro-2H-pyran-2-yl)o xy)cyclohexyl)oxy)pyridin-4- yl)pyrazolo[1,5-a]pyridin-2-yl)cyclopropanecarboxamide (25 mg, 0.046 mmol), TFA (0.6 mL), and CH2Cl2 (2 mL) was stirred for 1 h at room temperature. The reaction mixture was directly concentrated to afford the crude product, wihch was purified by preparative HPLC using a Phenomenex Gemini-NX C1875 x 30 mm x 3 µm column (eluent: 37% to 67% (v/v) CH ₃ CN and H2O with 0.05%NH3 and 10 mM NH4HCO3) to afford pure product. The product was 613

suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (5.2 mg, 25%) as a yellow solid. MS (ESI): mass calcd. for C ₂₃ H ₂₄ F ₂ N ₄ O ₄ , 458.2; m/z found, 459.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ): δ 11.11 (s, 1H), 8.58 (d, J = 7.2 Hz, 1H), 8.16 (s, 1H), 7.89 - 7.85 (m, 1H), 7.64 (t, J = 73.2 Hz, 1H), 7.22 (s, 1H), 7.05 (dd, J = 2.0, 7.2 Hz, 1H), 6.91 (s, 1H), 4.53 (d, J = 4.0 Hz, 1H), 4.48 - 4.36 (m, 1H), 3.56 - 3.44 (m, 1H), 2.02 - 1.89 (m, 3H), 1.78 - 1.68 (m, 2H), 1.47 - 1.35 (m, 2H), 1.33 - 1.22 (m, 2H), 0.86 - 0.79 (m, 4H) ¹⁹ F NMR (376 MHz, DMSO-d ₆ ): -86.23 (s, 2F) Example 724: N-[5-[2-(cyanomethoxy)-5-(2-cyano-2-methyl-propoxy)-4-pyridy l]pyrazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxamide. sing a similar manner as described in Example 259 Step B, except 3-((6-(cyanomethoxy)-4-iodopyridin-3-yl)oxy)-2,2-dimethylpro panenitrile and N-(5- (4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazolo[1,5-a] pyridin-2- yl)cyclopropanecarboxamide were used. MS (ESI): mass calcd. for C ₂₃ H ₂₂ N ₆ O ₃ , 430.2; m/z found, 431.5 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6): δ 11.14 (s, 1H), 8.60 (d, J = 7.2 Hz, 1H), 8.11 (s, 1H), 7.93 (s, 1H), 7.15 (s, 1H), 7.08 (dd, J = 2.0, 7.2 Hz, 1H), 6.90 (s, 1H), 5.22 (s, 2H), 4.18 (s, 2H), 2.00 - 1.82 (m, 1H), 1.35 (s, 6H), 0.85 - 0.79 (m, 4H) Example 725: 3-[[6-(2,2-difluoroethoxy)-4-[2-[[6-methyl-2-(methylamino)py rimidin-4- yl]amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dim ethyl-propanenitrile. 614

sing a similar manner as described in Example 259 Step B, except Intermediate 28 and 4-chloro-N,6-dimethylpyrimidin-2-amine were used. MS (ESI): mass calcd. for C25H26F2N8O2, 508.2; m/z found, 509.7 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6): δ 9.88 (s, 1H), 8.55 (d, J = 7.2 Hz, 1H), 8.05 (s, 1H), 7.96 - 7.81 (m, 1H), 7.10 (s, 1H), 7.08 (s, 1H), 7.02 (dd, J = 1.2, 7.2 Hz, 1H), 6.64 (br. s., 1H), 6.57 - 6.25 (m, 1H), 6.22 (br. s., 1H), 4.65 - 4.48 (m, 2H), 4.14 (s, 2H), 2.84 (d, J = 4.0 Hz, 3H), 2.13 (s, 3H), 1.35 (s, 6H) ¹⁹ F NMR (376 MHz, DMSO-d6): -125.36 - -125.81 (m, 2F) Example 726: (*S)-N-[5-[2-(1-cyanoethoxy)-5-(2-cyano-2-methyl-propoxy)-4- pyridyl]pyrazolo[1,5-a]pyridin-2-yl]cyclopropanecarboxamide. s described in Example 680 except Intermediate 3 was used. The enantiomeric mixture was separated by SFC with DAICEL CHIRALPAK AD (250 mm x 30 mm, 10 um), column (eluent: 50% to 50% (v/v) EtOH with 0.1% NH ₃ .H ₂ O in supercritical CO ₂ ) to afford pure product. The title compound was second to elute. MS (ESI): mass calcd. for C ₂₄ H ₂₄ N ₆ O ₃ , 444.2; m/z found, 445.4 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ): δ 11.15 (s, 1H), 8.60 (d, J = 7.2 Hz, 1H), 8.12 (s, 1H), 7.94 (s, 1H), 7.13 (s, 1H), 7.09 (dd, J = 1.6, 7.2 Hz, 1H), 6.89 (s, 1H), 5.72 (q, J = 6.4 Hz, 1H), 4.18 (s, 2H), 1.98 - 1.89 (m, 1H), 1.71 (d, J = 6.8 Hz, 3H), 1.35 (s, 6H), 0.87 - 0.79 (m, 4H) 615

Example 727: 3-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)am ino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanamide. -3-(tosyloxy)propanoate. A solution consisting of methyl 3- hydroxy-2,2-dimethylpropanoate (5.0 g, 38 mmol), DMAP (6.9 g, 57 mmol), and DCM (60 mL) was stirred in ice bath at 0 °C. To the solution was slowly added TsCl (7.9 g, 42 mmol) in batches. The resultant mixture was stirred overnight at room-temperature. The reaction mixture was washed with 1N HCl (50 mL x 2), saturated aqueous NaHCO3 (50 mL x 2) and concentrated under reduced pressure to afford the title compound as a white solid (10 g, 92%), which was purified by preparative HPLC using a Welch Xtimate C18250 x 50mm x 10 um column (eluent: 30% to 65% (v/v) water(10mM NH ₄ HCO ₃ )-ACN) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (4.5 g, 42%) as a white solid. Step B: methyl 3-((6-(difluoromethoxy)-4-(2-((2,6-dimethylpyrimidin-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)pyridin-3-yl)oxy)-2,2-d imethylpropanoate. The title compound was prepared as described in Example 329, except methyl 2,2-dimethyl-3- (tosyloxy)propanoate was used instead of 2-cyano-2-methylpropyl-4-methylbenzenesulfonate in Step A. Step C. 3-((6-(difluoromethoxy)-4-(2-((2,6-dimethylpyrimidin-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)pyridin-3-yl)oxy)-2,2-d imethylpropanoic acid. A mixture consisting of methyl 3-((6-(difluoromethoxy)-4-(2-((2,6-dimethylpyrimidin-4- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)pyridin-3-yl)oxy)-2,2-d imethylpropanoate (3.7 g, 7.2- mmol), LiOH•H ₂ O-(3.0 g,-72-mmol), THF-(20 mL), and H ₂ O (5 mL) was stirred at 60°C for 3 hr before cooling to room temperature. The mixture was poured into water (50 mL), then 616

extracted with ethyl acetate (50 mL x 3). The combined organic layers were dried over Na2SO4. The organics were concentrated under reduce pressure to afford the desired compound (3.9 g, crude) as a white solid. Step D: 3-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)am ino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanamide. A-mixture consisting of 3-((6- (difluoromethoxy)-4-(2-((2,6-dimethylpyrimidin-4-yl)amino)py razolo[1,5-a]pyridin-5- yl)pyridin-3-yl)oxy)-2,2-dimethylpropanoic acid (100-mg, 0.201 mmol), NH ₃ .H ₂ O (37-mg,- 0.26-mmol), DIEA (130-mg,-1.00-mmol), HATU (153-mg, 0.401-mmol) and DMF (2-mL) was stirred at 25°C for 1 h before cooling to room temperature. The crude product was further purified by preparative HPLC using a Phenomenex Gemini-NX 75 x 30 mm x 3 um column (eluent: 33% to 63% (v/v) CH3CN and H2O with 0.05%NH3H2O+10mM NH4HCO3) to afford product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (28 mg, 28%) as white solid. MS (ESI): mass calcd. for C ₂₄ H ₂₅ F ₂ N ₇ O ₃ , 497.2; m/z found, 498.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6): δ 10.23 (s, 1H), 8.57 (d, J = 7.2 Hz, 1H), 8.09 (s, 1H), 7.85 (d, J = 1.2 Hz, 1H), 7.65 (t, J = 73.2 Hz, 1H), 7.23 (s, 1H), 7.19 (s, 1H), 7.10 - 6.99 (m, 3H), 6.87 (s, 1H), 4.12 (s, 2H), 2.47 (s, 3H), 2.31 (s, 3H), 1.15 (s, 6H) ¹⁹ F NMR (376 MHz, DMSO-d ₆ ): -86.29 (s, 2F) Example 728: 3-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)am ino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-N,N,2,2-tetramethyl-propanami de. as prepared as described in Example 727, except dimethylamine hydrochloride was used in Step D. MS (ESI): mass calcd. for C ₂₆ H ₂₉ F ₂ N ₇ O ₃ , 525.2; m/z found, 526.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6): δ 10.24 (s, 1H), 8.57 (d, J = 7.2 Hz, 1H), 8.10 (s, 1H), 7.85 (d, J = 0.8 Hz, 1H), 7.66 (t, J = 1.2 Hz, 1H), 7.23 (s, 1H), 7.06 - 617

7.01 (m, 1H), 6.99 (dd, J = 2.0, 7.2 Hz, 1H), 6.89 (s, 1H), 4.19 (s, 2H), 2.95 (s, 6H), 2.46 (s, 3H), 2.31 (s, 3H), 1.26 (s, 6H) ¹⁹ F NMR (376MHz, DMSO-d6-86.32 (s, 2F) Example 729: 3-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)am ino]imidazo[1,2- a]pyrazin-6-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. lpropoxy)-2-(difluoromethoxy)pyridin-4-yl)boronic acid. To a round bottom flask, i-PrMgCl•LiCl (8.36 mL, 10.9 mmol, 1.3 M in THF) was added drop-wise over 15 min to a -65 °C (dry ice/ EtOH) solution consisting of 3-((6-(difluoromethoxy)-4- iodopyridin-3-yl)oxy)-2,2-dimethylpropanenitrile (1.00 g, 2.72 mmol) and THF (10 mL) and stirred at -65 °C for 30 min. Then 2-isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (3.54 g, 19.0 mmol) was added drop-wise over 5 min to the reaction mixture under N2 at -65 °C. The mixture was warmed to room temperature and stirred overnight. The reaction mixture was poured into aq. Sat. NH4Cl (50 mL) and extracting with EtOAc (50 mL x 3). The combined organic extracts were concentrated to dryness under reduced pressure to give the crude product, which was purified by preparative HPLC using a Phenomenex DE Boston Uni C18150 x 40 mm x 5 um column (eluent: 30% to 60% (v/v) water(0.225%FA)-ACN) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (160 mg, 21%) as a yellow solid. Step B: 3-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)am ino]imidazo[1,2- a]pyrazin-6-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. The title compound was prepared as described in Example 259 Steps B-C, except (5-(2-cyano-2-methylpropoxy)-2- (difluoromethoxy)pyridin-4-yl)boronic acid was used and Brettphos-Pd-G3 was used as the catalyst in Step D (36.8 mg, 30%). MS (ESI): mass calcd. for C23H22F2N8O2, 480.2; m/z found, 481.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6): δ 10.52 (s, 1H), 9.44 (d, J = 1.2 Hz, 1H), 9.01 618

(s, 1H), 8.51 (s, 1H), 8.20 (s, 1H), 7.86 - 7.45 (m, 2H), 6.73 (s, 1H), 4.35 (s, 2H), 2.48 (s, 3H), 2.30 (s, 3H), 1.46 (s, 6H) ¹⁹ F NMR (376 MHz, DMSO-d6): -86.23 (s, 2F) Example 730: 3-[[4-[2-[(1-cyclopropyl-5-methyl-6-oxo-pyridazin-3-yl)amino ]pyrazolo[1,5- a]pyridin-5-yl]-6-(2,2-difluoroethoxy)-3-pyridyl]oxy]-2,2-di methyl-propanenitrile. The title compound (43.2 mg, 20%) was prepared as described in Example 688, except Brettphos-Pd-G3 was used as the catalyst. MS (ESI): mass calcd. for C27H27F2N7O3, 535.2; m/z found, 536.5 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6): δ 9.82 (s, 1H), 8.54 (d, J = 7.2 Hz, 1H), 8.05 (s, 1H), 7.91 (d, J = 1.2 Hz, 1H), 7.23 (d, J = 1.6 Hz, 1H), 7.10 (s, 1H), 7.05 (dd, J = 2.0, 7.2 Hz, 1H), 6.86 (s, 1H), 6.57 - 6.25 (m, 1H), 6.05 - 5.94 (m, 1H), 5.30 - 5.21 (m, 2H), 4.65 - 4.52 (m, 4H), 4.14 (s, 2H), 2.10 (d, J = 1.2 Hz, 3H), 1.35 (s, 6H) ¹⁹ F NMR (376 MHz, DMSO-d6): - 125.53 (s, 2F) Example 731: (*R)-4-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxymethyl]-5 ,5-dimethyl-pyrrolidin-2-one. as prepared as described in Example 502 Steps A-B, except 4-(hydroxymethyl)-5,5-dimethylpyrrolidin-2-one was used. The enantiomeric mixture was purified by SFC-16 over DAICEL CHIRALCEL OJ-H 250 mm x 30 mm x 5 µm (eluent: 45% to 619

45% (v/v) MeOH with 0.1% NH3•H2O in supercritical CO2). The title compound was first to elute. MS (ESI): mass calcd. for C26H27F2N7O3, 523.2; m/z found, 524.6 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ): δ 10.22 (s, 1H), 8.61 (d, J = 7.2 Hz, 1H), 8.17 (s, 1H), 7.85 - 7.46 (m, 3H), 7.22 (s, 1H), 7.07 - 7.01 (m, 1H), 7.00 (dd, J = 1.6, 7.2 Hz, 1H), 6.88 (br. s., 1H), 4.27 - 4.20 (m, 1H), 4.17 - 4.09 (m, 1H), 2.46 (s, 3H), 2.31 (s, 3H), 2.28 - 2.11 (m, 2H), 1.12 (s, 3H), 1.04 (s, 3H) ¹⁹ F NMR (376 MHz, DMSO-d ₆ ): -86.33 (s, 2F) Example 732: (*S)-4-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxymethyl]-5 ,5-dimethyl-pyrrolidin-2-one. was prepared as described in Example 738. It was second to eluting peak. MS (ESI): mass calcd. for C26H27F2N7O3, 523.2; m/z found, 524.6 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ): δ 10.22 (s, 1H), 8.61 (d, J = 6.8 Hz, 1H), 8.17 (s, 1H), 7.85 - 7.46 (m, 3H), 7.22 (s, 1H), 7.06 - 7.01 (m, 1H), 7.00 (dd, J = 2.0, 7.2 Hz, 1H), 6.88 (br. s., 1H), 4.27 - 4.20 (m, 1H), 4.17 - 4.10 (m, 1H), 2.46 (s, 3H), 2.31 (s, 3H), 2.28 - 2.12 (m, 2H), 1.12 (s, 3H), 1.04 (s, 3H) ¹⁹ F NMR (376 MHz, DMSO-d ₆ ): -86.33 (s, 2F) Example 733: 5-[2-(difluoromethoxy)-5-(2-methyl-2-methylsulfonyl-propoxy) -4-pyridyl]-N- (2,6-dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. 0

The title compound (38.8 mg, 24%) was prepared as described in Example 502 Steps A-B, except 2-methyl-2-(methylsulfonyl)propan-1-ol was used. MS (ESI): mass calcd. for C ₂₄ H ₂₆ F ₂ N ₆ O ₄ S, 532.2; m/z found, 533.3 [M+H] ⁺ . ¹ H NMR (400 MHz, CD ₃ CN): δ 8.41 (d, J=7.2 Hz, 1H), 8.20 (s, 1H), 8.01 (s, 1H), 7.68 (d, J=0.8 Hz, 1H), 7.46 (t, J=73.6 Hz, 1H), 7.06 (s, 1H), 7.00 (s, 1H), 6.94 (dd, J=2.0, 7.2 Hz, 1H), 6.88 (s, 1H), 4.26 (s, 2H), 2.61 (s, 3H), 2.49 (s, 3H), 2.34 (s, 3H), 1.39 (s, 6H) ¹⁹ F NMR (376 MHz, CD ₃ CN): -88.66 (s, 2F) Example 734: (*S)-4-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxymethyl]-1 ,5,5-trimethyl-pyrrolidin-2-one. thyl-5-oxopyrrolidine-3-carboxylate. NaH (389 mg, 60% in mineral oil, 16.2 mmol) was added to a stirred mixture consisting of ethyl 2,2-dimethyl-5- oxopyrrolidine-3-carboxylate (1.5 g, 8.1 mmol) and DMF (20 mL) at 0 °C. Then MeI (0.76 mL, 12 mmol) was added to the mixture at 0 °C and stirred at room temperature for 12 h. The reaction mixture was added to sat. aq. NH ₄ Cl (30 mL) and extracted with EtOAc (30 mL x 3). The combined organic extracts were washed with water (50 mL x 2) and brine (50 mL x 3), dried over anhydrous Na2SO4, filtered, and concentrated to dryness under reduced pressure to give the product (1.4 g, 87%) as a yellow oil. Step B: 2-methyl-2-(methylsulfonyl)propan-1-ol. The title compound (870 mg, 80%) was prepared as described in Example 365 Step A, except ethyl 1,2,2-trimethyl-5-oxopyrrolidine-3- carboxylate was used. Step C: (1-cyanocyclopropyl)methyl 4-methylbenzenesulfonate. The title compound was prepared as described in Example 191 Step D. 621

Step D: (*S)-4-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxymethyl]-1 ,5,5-trimethyl-pyrrolidin-2-one. The title compound (1.9 mg, 17%) was prepared as described in Example 329 except (1- cyanocyclopropyl)methyl 4-methylbenzenesulfonate was used in Step A. The resulting mixture was purified by SFC-13 over DAICEL CHIRALPAK AD 250 mm x 30 mm, 10 µm (eluent: 40% to 40% (v/v) supercritical 0.1%NH ₃ H ₂ O MeOH to afford enantiomerically pure material. The title compound was second to elute. MS (ESI): mass calcd. for C ₂₇ H ₂₉ F ₂ N ₇ O ₃ , 537.2; m/z found, 538.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6): δ 10.23 (s, 1H), 8.61 (d, J = 6.8 Hz, 1H), 8.17 (s, 1H), 7.86 - 7.47 (m, 2H), 7.23 (s, 1H), 7.05 - 6.94 (m, 2H), 6.88 (br. s., 1H), 4.32 - 4.24 (m, 1H), 4.21 - 4.13 (m, 1H), 2.54 (s, 3H), 2.46 (s, 3H), 2.45 - 2.40 (m, 1H), 2.35 - 2.28 (m, 4H), 2.24 - 2.15 (m, 1H), 1.14 (s, 3H), 1.01 (s, 3H) ¹⁹ F NMR (376 MHz, DMSO-d6): -86.36 (s, 2F) Example 735: 3-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)am ino]pyrazolo[1,5- a]pyridin-5-yl]-3-pyridyl]oxy]-N,N,2,2-tetramethyl-propanami de. as prepared as described in Example 734, except dimethylamine hydrochloride was used in Step D. MS (ESI): mass calcd. for C ₂₆ H ₂₉ F ₂ N ₇ O ₃ , 525.2; m/z found, 526.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6): δ 10.24 (s, 1H), 8.57 (d, J = 7.2 Hz, 1H), 8.10 (s, 1H), 7.85 (d, J = 0.8 Hz, 1H), 7.66 (t, J = 1.2 Hz, 1H), 7.23 (s, 1H), 7.06 - 7.01 (m, 1H), 6.99 (dd, J = 2.0, 7.2 Hz, 1H), 6.89 (s, 1H), 4.19 (s, 2H), 2.95 (s, 6H), 2.46 (s, 3H), 2.31 (s, 3H), 1.26 (s, 6H) ¹⁹ F NMR (376MHz, DMSO-d6-86.32 (s, 2F) Example 736: 3-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)am ino]imidazo[1,2- a]pyrazin-6-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. 622

lpropoxy)-2-(difluoromethoxy)pyridin-4-yl)boronic acid. To a round bottom flask, i-PrMgCl•LiCl (8.36 mL, 10.9 mmol, 1.3 M in THF) was added drop-wise over 15 min to a -65 °C (dry ice/ EtOH) solution consisting of 3-((6-(difluoromethoxy)-4- iodopyridin-3-yl)oxy)-2,2-dimethylpropanenitrile (1.00 g, 2.72 mmol) and THF (10 mL) and stirred at -65 °C for 30 min. Then 2-isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (3.54 g, 19.0 mmol) was added drop-wise over 5 min to the reaction mixture under N ₂ at -65 °C. The mixture was warmed to room temperature and stirred overnight. The reaction mixture was poured into aq. Sat. NH ₄ Cl (50 mL) and extracting with EtOAc (50 mL x 3). The combined organic extracts were concentrated to dryness under reduced pressure to give the crude product, which was purified by preparative HPLC using a Phenomenex DE Boston Uni C18150 x 40 mm x 5 um column (eluent: 30% to 60% (v/v) water(0.225%FA)-ACN) to afford pure product. The product was suspended in water (10 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford the title compound (160 mg, 21%) as a yellow solid. Step B: 3-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4-yl)am ino]imidazo[1,2- a]pyrazin-6-yl]-3-pyridyl]oxy]-2,2-dimethyl-propanenitrile. The title compound was prepared as described in Example 259 Steps B-C, except (5-(2-cyano-2-methylpropoxy)-2- (difluoromethoxy)pyridin-4-yl)boronic acid was used and Brettphos-Pd-G3 was used as the catalyst in Step D (36.8 mg, 30%). MS (ESI): mass calcd. for C ₂₃ H ₂₂ F ₂ N ₈ O ₂ , 480.2; m/z found, 481.1 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ): δ 10.52 (s, 1H), 9.44 (d, J = 1.2 Hz, 1H), 9.01 (s, 1H), 8.51 (s, 1H), 8.20 (s, 1H), 7.86 - 7.45 (m, 2H), 6.73 (s, 1H), 4.35 (s, 2H), 2.48 (s, 3H), 2.30 (s, 3H), 1.46 (s, 6H) ¹⁹ F NMR (376 MHz, DMSO-d6): -86.23 (s, 2F) Example 737: 3-((4-(2-((1-cyclopropyl-5-methyl-6-oxo-1,6-dihydropyridazin -3- yl)amino)pyrazolo[1,5-a]pyridin-5-yl)-6-(2,2-difluoroethoxy) pyridin-3-yl)oxy)-2,2- dimethylpropanenitrile. 623 The title compound (43.2 mg, 20%) was prepared as described in Example 695, except Brettphos-Pd-G3 was used as the catalyst. MS (ESI): mass calcd. for C ₂₇ H ₂₇ F ₂ N ₇ O ₃ , 535.2; m/z found, 536.5 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6): δ 9.82 (s, 1H), 8.54 (d, J = 7.2 Hz, 1H), 8.05 (s, 1H), 7.91 (d, J = 1.2 Hz, 1H), 7.23 (d, J = 1.6 Hz, 1H), 7.10 (s, 1H), 7.05 (dd, J = 2.0, 7.2 Hz, 1H), 6.86 (s, 1H), 6.57 - 6.25 (m, 1H), 6.05 - 5.94 (m, 1H), 5.30 - 5.21 (m, 2H), 4.65 - 4.52 (m, 4H), 4.14 (s, 2H), 2.10 (d, J = 1.2 Hz, 3H), 1.35 (s, 6H) ¹⁹ F NMR (376 MHz, DMSO-d6): - 125.53 (s, 2F) Example 738: (*R)-4-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxymethyl]-5 ,5-dimethyl-pyrrolidin-2-one. The title compound (85 mg, 20%) was prepared as described in Example 501 Steps A-B, except 4-(hydroxymethyl)-5,5-dimethylpyrrolidin-2-one was used. The enantiomeric mixture was purified by SFC-16 over DAICEL CHIRALCEL OJ-H 250 mm x 30 mm x 5 µm (eluent: 45% to 45% (v/v) MeOH with 0.1% NH ₃ •H ₂ O in supercritical CO ₂ ). The title compound was first to elute. MS (ESI): mass calcd. for C26H27F2N7O3, 523.2; m/z found, 524.6 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ): δ 10.22 (s, 1H), 8.61 (d, J = 7.2 Hz, 1H), 8.17 (s, 1H), 7.85 - 7.46 (m, 3H), 7.22 (s, 1H), 7.07 - 7.01 (m, 1H), 7.00 (dd, J = 1.6, 7.2 Hz, 1H), 6.88 (br. s., 1H), 4.27 - 4.20 (m, 1H), 4.17 - 4.09 (m, 1H), 2.46 (s, 3H), 2.31 (s, 3H), 2.28 - 2.11 (m, 2H), 1.12 (s, 3H), 1.04 (s, 3H) ¹⁹ F NMR (376 MHz, DMSO-d6): -86.33 (s, 2F) 624

Example 739: (*S)-4-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxymethyl]-5 ,5-dimethyl-pyrrolidin-2-one. was prepared as described in Example 738. It was second to eluting peak. MS (ESI): mass calcd. for C ₂₆ H ₂₇ F ₂ N ₇ O ₃ , 523.2; m/z found, 524.6 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d ₆ ): δ 10.22 (s, 1H), 8.61 (d, J = 6.8 Hz, 1H), 8.17 (s, 1H), 7.85 - 7.46 (m, 3H), 7.22 (s, 1H), 7.06 - 7.01 (m, 1H), 7.00 (dd, J = 2.0, 7.2 Hz, 1H), 6.88 (br. s., 1H), 4.27 - 4.20 (m, 1H), 4.17 - 4.10 (m, 1H), 2.46 (s, 3H), 2.31 (s, 3H), 2.28 - 2.12 (m, 2H), 1.12 (s, 3H), 1.04 (s, 3H) ¹⁹ F NMR (376 MHz, DMSO-d ₆ ): -86.33 (s, 2F) Example 740: 5-[2-(difluoromethoxy)-5-(2-methyl-2-methylsulfonyl-propoxy) -4-pyridyl]-N- (2,6-dimethylpyrimidin-4-yl)pyrazolo[1,5-a]pyridin-2-amine. was prepared as described in Example 501 Steps A-B, except 2-methyl-2-(methylsulfonyl)propan-1-ol was used. MS (ESI): mass calcd. for C ₂₄ H ₂₆ F ₂ N ₆ O ₄ S, 532.2; m/z found, 533.3 [M+H] ⁺ . ¹ H NMR (400 MHz, CD ₃ CN): δ 8.41 (d, J=7.2 Hz, 1H), 8.20 (s, 1H), 8.01 (s, 1H), 7.68 (d, J=0.8 Hz, 1H), 7.46 (t, J=73.6 Hz, 1H), 7.06 (s, 1H), 7.00 (s, 1H), 6.94 (dd, J=2.0, 7.2 Hz, 1H), 6.88 (s, 1H), 4.26 (s, 2H), 2.61 (s, 3H), 2.49 (s, 3H), 2.34 (s, 3H), 1.39 (s, 6H) ¹⁹ F NMR (376 MHz, CD3CN): -88.66 (s, 2F) 625

Example 741: (*S)-4-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxymethyl]-1 ,5,5-trimethyl-pyrrolidin-2-one. thyl-5-oxopyrrolidine-3-carboxylate. NaH (389 mg, 60% in mineral oil, 16.2 mmol) was added to a stirred mixture consisting of ethyl 2,2-dimethyl-5- oxopyrrolidine-3-carboxylate (1.5 g, 8.1 mmol) and DMF (20 mL) at 0 °C. Then MeI (0.76 mL, 12 mmol) was added to the mixture at 0 °C and stirred at room temperature for 12 h. The reaction mixture was added to sat. aq. NH4Cl (30 mL) and extracted with EtOAc (30 mL x 3). The combined organic extracts were washed with water (50 mL x 2) and brine (50 mL x 3), dried over anhydrous Na ₂ SO ₄ , filtered, and concentrated to dryness under reduced pressure to give the product (1.4 g, 87%) as a yellow oil. Step B: 2-methyl-2-(methylsulfonyl)propan-1-ol. The title compound (870 mg, 80%) was prepared as described in Example 364 Step A, except ethyl 1,2,2-trimethyl-5-oxopyrrolidine-3- carboxylate was used. Step C: (1-cyanocyclopropyl)methyl 4-methylbenzenesulfonate. The title compound was prepared as described in Example 191 Step D. Step D: (*S)-4-[[6-(difluoromethoxy)-4-[2-[(2,6-dimethylpyrimidin-4- yl)amino]pyrazolo[1,5-a]pyridin-5-yl]-3-pyridyl]oxymethyl]-1 ,5,5-trimethyl-pyrrolidin-2-one. The title compound (1.9 mg, 17%) was prepared as described in Example 329 except (1- cyanocyclopropyl)methyl 4-methylbenzenesulfonate was used in Step A. The resulting mixture was purified by SFC-13 over DAICEL CHIRALPAK AD 250 mm x 30 mm, 10 µm (eluent: 40% to 40% (v/v) supercritical 0.1%NH3H2O MeOH to afford enantiomerically pure material. The title compound was second to elute. MS (ESI): mass calcd. for C ₂₇ H ₂₉ F ₂ N ₇ O ₃ , 537.2; m/z 626 found, 538.2 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO-d6): δ 10.23 (s, 1H), 8.61 (d, J = 6.8 Hz, 1H), 8.17 (s, 1H), 7.86 - 7.47 (m, 2H), 7.23 (s, 1H), 7.05 - 6.94 (m, 2H), 6.88 (br. s., 1H), 4.32 - 4.24 (m, 1H), 4.21 - 4.13 (m, 1H), 2.54 (s, 3H), 2.46 (s, 3H), 2.45 - 2.40 (m, 1H), 2.35 - 2.28 (m, 4H), 2.24 - 2.15 (m, 1H), 1.14 (s, 3H), 1.01 (s, 3H) ¹⁹ F NMR (376 MHz, DMSO-d ₆ ): -86.36 (s, 2F) Additional Compounds Additional compounds were prepared and listed in the Table 1 below: The following exemplified compounds were prepared using methods analogous to those cited in the synthesis method column. Table 1. Additional Compounds E _{xample Structure NMR} ^Synthesis Compound IUPAC M _ethod name 3H), 2.36 (s, 3H), 1.97 - 1.87 (m, 1H), 0.88 - 0.76 (m, 4H)

1H NMR (400 MHz, DMSO-d6): 1110 (s 1H) 856 (d J = 68 Hz N-[5-(5-ethox -2-meth l- Biological Testing Examples Test Example 1: SIK2 enzymatic assay version 1 All steps were performed at room temperature. Compounds were pre-plated onto an assay plate using an Echo acoustic dispenser (Labcyte, E550 or E555) at 20 nL per well. Enzyme prepared in Assay Buffer at 0.6 nM (2X final concentration) was added at 2 µL per well using the 629

Multidrop Combi (Thermo Fisher—used for all additions in this assay) to the assay plate, spun for 1 min at 800-850 rpm (Allegra 6KR Beckman Coulter centrifuge), and incubated with compound for 30 minutes. Assay Buffer containing 160 µM ATP and 140 µM HDAC5tide (2X of final concentration for each substrate) was added at 2 µL per well to the assay plate and then spun as above and incubated for 4 hours. One column of wells was dedicated to a no-peptide negative control (containing only ATP). ADPGlo Reagent (prepared and aliquoted as per manufacturer instructions) was then added at 2 µL per well, spun and incubated for 40 min. ADPGlo Detection (prepared and aliquoted as per manufacturer instructions) was added at 2 µL per well to the assay plate, which was spun and incubated for at least 30 min. The plate was then read on the Pherastar (BMG Labtech) using a luminescence read. Gain was set by the 0.1 mM concentration of ADP wells in the ADP/ATP standard curve plate generated as per manufacturer instructions. The results are shown in Table 2 below. Test Example 2: SIK2 enzymatic assay high version 2 (high ATP) All steps were performed at room temperature. Compounds were pre-plated onto an assay plate using an Echo acoustic dispenser (Labcyte, E550 or E555) at 80 nL per well. Enzyme prepared in assay buffer at 6 nM (2X final concentration) was added at 4 µL per well using the Multidrop Combi (Thermo Fisher—used for all additions in this assay) to the assay plate, spun for 1 min at 1000 rpm (Allegra 6KR Beckman Coulter centrifuge), and incubated with compound for 30 minutes. Assay buffer containing 6 mM ATP and 400 µM HDAC5tide (2X of final concentration for each substrate) was added at 4 µL per well to the assay plate and then spun as above and incubated for 2 hours. Note that typically one column of wells was dedicated to a no- enzyme negative control (containing ATP and peptide) and another dedicated to DMSO only (maximal enzyme activity). ADP-Glo Max Reagent (prepared and aliquoted as per manufacturer instructions) was then added at 8 µL per well, spun and incubated for 2 hours. ADP-Glo Max Detection (prepared and aliquoted as per manufacturer instructions) was added at 8 µL per well to the assay plate, which was spun and incubated for 1 hour. The plate is then read on the Pherastar (BMG Labtech) using a luminescence read. Gain is set between 2200-2500. The results are shown in Table 2 below. Table 2: SIK2 Enzymatic Assay Data 630 ^{EXAMPLE Number} _{SIK2 ADP Glo IC50 (μM)} SIK2 high ATP IC ₅₀ (μM) (Test Example 1) (Test Example 2) Example 40 0.00470435 0.0875992 Example 41 000243053 00584925 Example 81 0.0154454 0.277524 Example 82 0000268287 000506874 Example 122 2.42605 Example 123 0000939508 Example 163 0.0079506 Example 164 0218072 Example 204 0.0869762 Example 205 00181218 Example 245 0.0239166 Example 246 00441367 Example 286 0.0165577 Example 287 000144477 Example 327 0.0366353 Example 328 00381241 Example 368 <0.000846838 Example 369 00016421 Example 409 <0.000846838 Example 410 <0000846838 Example 450 0.0399577 Example 451 00182222 Example 490 0.00130017 0.0179184 Example 491 001516 Example 531 0.00144212 Example 532 00134772 Example 572 0.0787409 Example 573 00740116 Example 613 0.100207 Example 614 0087882 Example 660 0.183654 Example 661 00748514 Example 702 0.00316519 Example 703 00698554

Example 743 0.02166 Example 744 02892 649