CYCLIC PEPTIDE INHIBITORS OF IL-23

FIELD OF THE INVENTION

[0001] The present invention relates to novel peptide inhibitors of the interleukin-23 receptor (IL-23R) or pharmaceutically acceptable salts, solvates and/or other forms thereof, invention relates to corresponding pharmaceutical compositions, methods and/or uses of the IL-23R inhibitors for treatment of autoimmune inflammation diseases and/or related disorders.

REFERENCE TO SEQUENCE LISTING SUBMITTED ELECTRONICALLY

[0002] This application contains a sequence listing, which is submitted electronically via The United States Patent and Trademark Center Patent Center as an XML formatted sequence listing with a file name “JBI6738WOPCT1 sequence listing.xmf’and a creation date of 07/13/2023 and having a size of 3,492 Kb. The sequence listing submitted via Patent Center is part of the specification and is herein incorporated by reference.

BACKGROUND

[0003] The interleukin-23 (IL-23) cytokine has been implicated as playing a crucial role in the pathogenesis of autoimmune inflammation and related diseases and disorders, such as multiple sclerosis, asthma, rheumatoid arthritis, psoriasis, and inflammatory bowel diseases (IBDs), for example, ulcerative colitis and Crohn’s disease. Studies in acute and chronic mouse models of IBD revealed a primary role of interleukin-23 receptor (IL-23R) and downstream effector cytokines in disease pathogenesis. IL-23R is expressed on various adaptive and innate immune cells including Thl7 cells, y5 T cells, natural killer (NK) cells, dendritic cells, macrophages, and innate lymphoid cells, which are found abundantly in the intestine. At the intestine mucosal surface, the gene expression and protein levels of IL-23R are found to be elevated in IBD patients. It is believed that IL-23 mediates this effect by promoting the development of a pathogenic CD4 ⁺ T cell population that produces IL-6, IL- 17, and tumor necrosis factor (TNF).

[0004] Production of IL-23 is enriched in the intestine, where it is believed to play a key role in regulating the balance between tolerance and immunity through T-cell-dependent and T-cell-independent pathways of intestinal inflammation through effects on T-helper 1 (Thl) and Thl7-associated cytokines, as well as restraining regulatory T-cell responses in the gut, favoring inflammation. In addition, polymorphisms in the IL-23 receptor (IL-23R) have been associated with susceptibility to inflammatory bowel diseases (IBDs), further establishing the critical role of the IL-23 pathway in intestinal homeostasis.

[0005] Psoriasis, a chronic skin disease affecting about 2%-3% of the general population has been shown to be mediated by the body’s T cell inflammatory response mechanisms. IL- 23 has one of several interleukins implicated as a key player in the pathogenesis of psoriasis, purportedly by maintaining chronic autoimmune inflammation via the induction of interleukin- 17, regulation of T memory cells, and activation of macrophages. Expression of IL-23 and IL-23R has been shown to be increased in tissues of patients with psoriasis, and antibodies that neutralize IL-23 showed IL-23-dependent inhibition of psoriasis development in animal models of psoriasis.

[0006] IL -23 is a heterodimer composed of a unique pl9 subunit and the p40 subunit shared with IL- 12, which is a cytokine involved in the development of interferon-y (IFN-y)- producing T helper 1 (THI) cells. Although IL-23 and IL- 12 both contain the p40 subunit, they have different phenotypic properties. For example, animals deficient in IL- 12 are susceptible to inflammatory autoimmune diseases, whereas IL-23 deficient animals are resistant, presumably due to a reduced number of CD4 ⁺ T cells producing IL-6, IL-17, and TNF in the CNS of IL-23 -deficient animals. IL-23 binds to IL-23R, which is a heterodimeric receptor composed of IL-12RP1 and IL-23R subunits. Binding of IL-23 to IL-23R activates the Jak-Stat signaling molecules, Jak2, Tyk2, and Statl, Stat 3, Stat 4, and Stat 5, although Stat4 activation is substantially weaker and different DNA-binding Stat complexes form in response to IL-23 as compared with IL- 12. IL-23R associates constitutively with Jak2 and in a ligand-dependent manner with Stat3. In contrast to IL- 12, which acts mainly on naive CD4(+) T cells, IL-23 preferentially acts on memory CD4(+) T cells.

[0007] Therapeutic moieties that inhibit the IL-23 pathway have been developed for use in treating IL-23-related diseases and disorders. A number of antibodies that bind to IL-23 or IL-23R have been identified, including ustekinumab, which has been approved for the treatment of moderate to severe plaque psoriasis (PSO), active psoriatic arthritis (PSA), moderately to severely active Crohn’s disease (CD) and moderately to severely active ulcerative colitis (UC). Examples of such identified antibodies, include: Tildrakizumab, an anti-IL23 antibody approved for treatment of plaque psoriasis, Guselkumab, an anti-IL23 antibody approved for treatment of psoriatic arthritis and Risankizumab, an anti-IL23 antibody approved for the treatment of plaque psoriasis in the US, and generalized pustular psoriasis, erythrodermic psoriasis and psoriatic arthritis in Japan.

[0008] Although targeted IL-23 antibody therapeutics are used clinically, there are no small-molecule therapeutics that selectively inhibit IL-23 signaling. There are some identified polypeptide inhibitors that bind to IL-23R and inhibit binding of IL -23 to IL-23R (see, e.g., US Patent Application Publication No. US2013/0029907).Thus, there remains a significant need in the art for effective small-molecule and/or polypeptide therapeutic agents to treat and/or prevent IL-23 -associated and/or IL23R-associated diseases and disorders.

BRIEF SUMMARY

[0009] In general, the present invention relates to novel peptide inhibitors of the interleukin- 23 receptor (IL-23R) or pharmaceutically acceptable salts, solvates and/or other forms thereof., corresponding pharmaceutical compositions, methods and/or uses of the IL-23R inhibitors for treatment of autoimmune inflammation diseases and/or related disorders.

[00010] In particular, the present invention relates to a cyclic peptide, or a pharmaceutically acceptable salt or solvate thereof, comprising an amino acid sequence of Formula (A): wherein: the amino acid residue at position Z ³ is absent or the residue of r; the amino acid residue at position Z ⁴ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁹ ; the amino acid residue at position Z ⁵ is the residue of N(N(Me)2); the amino acid residue at position Z ⁶ is the residue of T; the amino acid residue at position Z ⁷ is the residue of 7MeW; the amino acid residue at position Z ⁸ is the residue of K(NMeAc); the amino acid residue at position Z ⁹ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁴ ; the amino acid residue at position Z ¹⁰ is the residue of TMAPF; the amino acid residue at position Z ¹¹ is the residue of 2Nal; the amino acid residue at position Z ¹² is absent or the residue of THP; the amino acid residue at position Z ¹³ is the residue of K(NMeAc); the amino acid residue at position Z ¹⁴ is the residue of N; the amino acid residue at position Z ¹⁵ is absent or the residue of 3Pya; the amino acid residue at position Z ¹⁶ is absent or the residue of Sar; eight or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position; and at least one of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) at least one quaternary amine.

[00011] In particular, the present invention relates to a cyclic peptide, or a pharmaceutically acceptable salt or solvate thereof, comprising an amino acid sequence of Formula (B):

Z ³ -Z ⁴ -Z ⁵ -Z ⁶ -Z ⁷ -Z ⁸ -Z ⁹ -Z ¹⁰ -Z ⁿ -Z ¹² -Z ¹³ -Z ¹⁴ -Z ¹⁵ -Z ¹⁶ (B), wherein: the amino acid residue at position Z ³ is absent or the residue of r; the amino acid residue at position Z ⁴ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁹ ; the amino acid residue at position Z ⁵ is the residue of N(N(Me)i); the amino acid residue at position Z ⁵ is the residue of T; the amino acid residue at position Z ⁷ is the residue of 7MeW; the amino acid residue at position Z ⁸ is the residue of K(NMeAc); the amino acid residue at position Z ⁹ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁴ ; the amino acid residue at position Z ¹⁰ is the residue of TMAPF; the amino acid residue at position Z ¹¹ is the residue of 2Nal; the amino acid residue at position Z ¹² is absent or the residue of THP; the amino acid residue at position Z ¹³ is the residue of K(NMeAc); the amino acid residue at position Z ¹⁴ is the residue of N; the amino acid residue at position Z ¹⁵ is absent or the residue of 3Pya; the amino acid residue at position Z ¹⁶ is absent or the residue of Sar; eight or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position; and at least one of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) at least one masked amine and/or masked amide.

[00012] In particular, the present invention relates to a cyclic peptide, or a pharmaceutically acceptable salt or solvate thereof, comprising an amino acid sequence of Formula (C): wherein: the amino acid residue at position Z ³ is absent or the residue of r; the amino acid residue at position Z ⁴ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁹ ; the amino acid residue at position Z ⁵ is the residue of N(N(Me)2); the amino acid residue at position Z ⁶ is the residue of T; the amino acid residue at position Z ⁷ is the residue of 7MeW; the amino acid residue at position Z ⁸ is the residue of K(NMeAc); the amino acid residue at position Z ⁹ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁴ ; the amino acid residue at position Z ¹⁰ is the residue of TMAPF; the amino acid residue at position Z ¹¹ is the residue of 2Nal; the amino acid residue at position Z ¹² is absent or the residue of THP; the amino acid residue at position Z ¹³ is the residue of K(NMeAc); the amino acid residue at position Z ¹⁴ is the residue of N; the amino acid residue at position Z ¹⁵ is absent or the residue of 3Pya; the amino acid residue at position Z ¹⁶ is absent or the residue of Sar; and eight or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00013] The present invention also relates to a compound which is selected from any one of the tables 1A, IB, 1C, ID, IE and IF or pharmaceutically acceptable salts thereof or solvates thereof.

[00014] In particular, the present invention relates to a compound of Formulae (I) to (X), or pharmaceutically acceptable salts, solvates and/or other forms thereof, corresponding pharmaceutical compositions, methods and/or uses for treatment of autoimmune inflammation diseases and related disorders.

[00015] The present invention relates to novel peptide inhibitors of the interleukin-23 receptor (IL-23R) of Formulae (I) to (VI) or pharmaceutically acceptable salts, solvates and/or other forms thereof., invention relates to corresponding pharmaceutical compositions, methods and/or uses of the IL-23R inhibitors for treatment of autoimmune inflammation diseases and/or related disorders.

[00016] The present invention also relates to compounds set forth in any of Tables 1 A-H, or pharmaceutically acceptable salts, solvates, or forms thereof, corresponding pharmaceutical compositions, and methods and/or uses for treatment of autoimmune inflammation diseases and related disorders.

[00017] The present disclosure also relates to pharmaceutical composition(s), which comprises a herein-described peptide inhibitor compound of the or a pharmaceutically acceptable salt, solvate, or form thereof as described herein, and a pharmaceutically acceptable carrier, excipient, or diluent. The pharmaceutical compositions may comprise or may exclude an absorption enhancer depending on the intended route of delivery or use thereof for treatment of specific indications. The absorption enhancer may be permeation enhancer or intestinal permeation enhancer. In an aspect the absorption enhancer improves oral bioavailability.

[00018] The present invention relates to method(s) for treating and/or uses(s) for inflammatory disease(s) in a subject, which comprises administering a therapeutically effective amount of one or more herein-described peptide inhibitor compounds of the IL-23R or pharmaceutically acceptable salts, or solvates thereof, or a corresponding pharmaceutical composition as described herein, respectively to a subject in need thereof. Such inflammatory diseases and related disorders may include, but are not limited to, inflammatory bowel disease (IBD), Crohn’s disease (CD), ulcerative colitis (UC), psoriasis (PsO), or psoriatic arthritis (PsA) and the like.

[00019] The present inventionprovides for the use of one or more herein-described compounds (e.g., compounds of Formulae (I) to (X) or Tables 1 A to 1H) for the preparation of pharmaceutical compositions for use in the treatment of inflammatory diseases and related disorders including, but not limited to, inflammatory bowel disease (IBD), Crohn’s disease (CD), ulcerative colitis (UC), psoriasis (PsO), and psoriatic arthritis (PsA).

[00020] The present inventionprovides for the use of one or more herein-described compounds of Formulae (I) to (X) or Tables 1 A to 1H in the treatment of inflammatory diseases and related disorders including, but not limited to, inflammatory bowel disease (IBD), Crohn’s disease (CD), ulcerative colitis (UC), psoriasis (PsO), and psoriatic arthritis (PsA).

[00021] The present inventionprovides for kits comprising one or more herein-described compounds of Formulae (I) to (X) or Tables 1 A to 1H and instructions for use in treating an a disease in a patient. The disease may be an inflammatory diseases or related disorder including, but not limited to, inflammatory bowel disease (IBD), Crohn’s disease (CD), ulcerative colitis (UC), psoriasis (PsO), and psoriatic arthritis (PsA).

DETAILED DESCRIPTION

I. GENERAL

[00022] The cyclic peptides of the present invention comprise quaternary amines, masked amines, masked amides or combinations thereof. The inclusion of quaternary amines, masked amines, and/or masked amides in the cyclic peptides of the present invention has improved the pharamacokinetic properties of the cyclic peptides compared to other compounds that target IL-23R. For example, the cyclic peptides of the present invention have highly desirable oral PK profiles and improved oral bioavaiability. The cyclic peptides of the present invention also have lower projected human doses. It is contemplated that the quaternary amines and masked amines and/or masked amides achieve these improvements by changing the polarity propreties of the molecules as reflected in the observed Exposed Polar Surface Area (EPSA) values.

[00023] The present invention relates to novel peptide inhibitors of the IL-23R or pharmaceutically acceptable salts, solvates, or forms thereof, corresponding pharmaceutical compositions, methods and/or uses for treatment of autoimmune inflammation and related diseases and disorders.

[00024] The present invention provides or relates to peptide inhibitors of an IL-23R. The peptide inhibitors of the present invention may exhibit enhanced properties, such as longer in vivo half-life, compared to the corresponding cyclic peptide inhibitor of an IL-23R without a cyclic structure. In particular, compounds and methods for specific targeting of IL-23R from the luminal side of the gut may provide therapeutic benefit to IBD patients suffering from local inflammation of the intestinal tissue; and/or orally bioavailable small molecule and/or polypeptide inhibitors of IL-23 may provide both a non-steroidal treatment option for patients with mild to moderate psoriasis and treatment for moderate to severe psoriasis that does not require delivery by infusion.

[00025] Compounds and methods for specific targeting of the IL-23R from the luminal side of the gut may provide therapeutic benefit to IBD patients suffering from local inflammation of the intestinal tissue. In addition, orally bioavailable small molecule and/or polypeptide inhibitors of IL-23 may provide both a non-steroidal treatment option for patients with mild to moderate psoriasis and treatment for moderate to severe psoriasis that does not require delivery by infusion.

[00026] The present invention is directed to addressing these needs by providing peptide inhibitors or pharmaceutically acceptable salts, solvates and/or other forms thereof, that bind IL-23R to inhibit IL-23 binding and signaling, via different suitable routes of administration, which may include but is not limited to oral administration.

[00027] In one general aspect, the invention relates to a cyclic peptide, or a pharmaceutically acceptable salt or solvate thereof, comprising an amino acid sequence of Formula (A):

Z ³ -Z ⁴ -Z ⁵ -Z ⁶ -Z ⁷ -Z ⁸ -Z ⁹ -Z ¹⁰ -Z ⁿ -Z ¹² -Z ¹³ -Z ¹⁴ -Z ¹⁵ -Z ¹⁶ (A), wherein: the amino acid residue at position Z ³ is absent or the residue of r; the amino acid residue at position Z ⁴ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁹ ; the amino acid residue at position Z ⁵ is the residue of N(N(Me)2); the amino acid residue at position Z ⁶ is the residue of T ; the amino acid residue at position Z ⁷ is the residue of 7MeW; the amino acid residue at position Z ⁸ is the residue of K(NMeAc); the amino acid residue at position Z ⁹ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁴ ; the amino acid residue at position Z ¹⁰ is the residue of TMAPF; the amino acid residue at position Z ¹¹ is the residue of 2Nal; the amino acid residue at position Z ¹² is absent or the residue of THP; the amino acid residue at position Z ¹³ is the residue of K(NMeAc); the amino acid residue at position Z ¹⁴ is the residue of N; the amino acid residue at position Z ¹⁵ is absent or the residue of 3Pya; the amino acid residue at position Z ¹⁶ is absent or the residue of Sar; eight or fewer of the amino acid residues at positions Z ³ , Z ³ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position; and at least one of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) at least one quaternary amine.

[00028] In another general aspect, the invention relates to a cyclic peptide, or a pharmaceutically acceptable salt or solvate thereof, comprising an amino acid sequence of Formula (B):

Z^-Z^Z^-Z^-Z^Z ¹ Fz^-Z^-Z^-Z^-Z ¹⁶ (B), wherein: the amino acid residue at position Z ³ is absent or the residue of r; the amino acid residue at position Z ⁴ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁹ ; the amino acid residue at position Z ⁵ is the residue of N(N(Me)2); the amino acid residue at position Z ⁶ is the residue of T; the amino acid residue at position Z ⁷ is the residue of 7MeW; the amino acid residue at position Z ⁸ is the residue of K(NMeAc); the amino acid residue at position Z ⁹ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁴ ; the amino acid residue at position Z ¹⁰ is the residue of TMAPF; the amino acid residue at position Z ¹¹ is the residue of 2Nal; the amino acid residue at position Z ¹² is absent or the residue of THP; the amino acid residue at position Z ¹³ is the residue of K(NMeAc); the amino acid residue at position Z ¹⁴ is the residue of N; the amino acid residue at position Z ¹⁵ is absent or the residue of 3Pya; the amino acid residue at position Z ¹⁶ is absent or the residue of Sar; eight or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ ,

Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position; and at least one of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) at least one masked amine and/or masked amide

[00029] In another general aspect, the invention relates to a cyclic peptide, or a pharmaceutically acceptable salt or solvate thereof, comprising an amino acid sequence of Formula (C):

Z3. _Z 4. _Z 5_ _Z 6_ _Z 7_ _Z 8_ _Z 9. _Z 10_ _Z 11 _z 12_ _z l 3 _ _z 14_ _z 15 _ _z 16 Q, wherein: the amino acid residue at position Z ³ is absent or the residue of r; the amino acid residue at position Z ⁴ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁹ ; the amino acid residue at position Z ⁵ is the residue of N(N(Me)2); the amino acid residue at position Z ⁶ is the residue of T; the amino acid residue at position Z ⁷ is the residue of 7MeW; the amino acid residue at position Z ⁸ is the residue of K(NMeAc); the amino acid residue at position Z ⁹ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁴ ; the amino acid residue at position Z ¹⁰ is the residue of TMAPF; the amino acid residue at position Z ¹¹ is the residue of 2Nal; the amino acid residue at position Z ¹² is absent or the residue of THP; the amino acid residue at position Z ¹³ is the residue of K(NMeAc); the amino acid residue at position Z ¹⁴ is the residue of N; the amino acid residue at position Z ¹⁵ is absent or the residue of 3Pya; the amino acid residue at position Z ¹⁶ is absent or the residue of Sar; and eight or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00030] In some embodiments, the amino acid residue at position Z ⁴ is the residue of Abu or the residue of an amino acid comprising a sulfhydryl group.

[00031] In some embodiments, the amino acid residue at position Z ⁹ is the residue of an amino acid comprising a sulfhydryl group.

[00032] In some embodiments, when the amino acid residue at position Z ⁴ is the residue of an amino acid comprising a sulfhydryl group, the amino acid residue at position Z ⁴ is connected to the amino acid residue at position Z ⁹ by a disulfide bond formed between the amino acid comprising a sulfhydryl group at position Z ⁴ and the amino acid comprising a sulfhydryl group at position Z ⁹ .

[00033] In some embodiments, the amino acid residue at position Z ⁴ is the residue of an amino acid comprising a sulfhydryl group, and the amino acid residue at position Z ⁴ is connected to the amino acid residue at position Z ⁹ by a disulfide bond formed between the amino acid comprising a sulfhydryl group at position Z ⁴ and the amino acid comprising a sulfhydryl group at position Z ⁹ .

[00034] In some embodiments, when the amino acid residue at position Z ⁴ is the residue of Abu, the amino acid residue at position Z ⁴ is connected to the amino acid residue at position Z ⁹ by a thioether bond formed between the Abu at position Z ⁴ and the amino acid comprising a sulfhydryl group at position Z ⁹ .

[00035] In some embodiments, the amino acid residue at position Z ⁴ is the residue of Abu, and the amino acid residue at position Z ⁴ is connected to the amino acid residue at position Z ⁹ by a thioether bond formed between the Abu at position Z ⁴ and the amino acid comprising a sulfhydryl group at position Z ⁹ .

[00036] In some embodiments, the cyclic peptide further comprises R ^NT , wherein R ^NT is bound to the N-terminal amine of the amino acid residue at position:

(i) Z ³ when Z ³ is present, or

(ii) Z ⁴ when Z ³ is absent; and

R ^NT is selected from the group consisting of: -C(O)-optionally substituted (C1-C20) alkyl and -C(O)-optionally substituted (C1-C40) heteroalkyl.

[00037] In some embodiments, the cyclic peptide further comprises R ^CT , wherein R ^CT is bound to the carbonyl derived from the C-terminal carboxylic acid of the amino acid residue at position:

(i) Z ¹⁶ when Z ¹⁶ is present,

(ii) Z ¹⁵ when Z ¹⁶ is absent, or

(hi) Z ¹⁴ when Z ¹⁵ and Z ¹⁶ are absent; and

R ^CT is -N(R ^Y )(R ^Z ), wherein:

(i) each R ^Y and R ^z is independently selected from the group consisting of: hydrogen, optionally substituted (C1-C15) alkyl and optionally substituted (C1-C30) heteroalkyl, or (ii) each R ^Y and R ^z come together with the N atom to which they are attached to form an optionally substituted (C3-C14) heterocyclic ring or an optionally substituted (C5- C10) bicyclic heterocyclic ring.

[00038] In some embodiments, the cyclic peptide further comprises R ^CT , wherein R ^CT is bound to the carbonyl derived from the C-terminal carboxylic acid of the amino acid residue at position:

(i) Z ¹⁶ when Z ¹⁶ is present,

(ii) Z ¹⁵ when Z ¹⁶ is absent, or

(iii) Z ¹⁴ when Z ¹⁵ and Z ¹⁶ are absent; and

R ^CT is -N(R' ^t )(R ^z ), wherein:

(i) each R ^Y and R ^z is independently selected from the group consisting of: hydrogen, optionally substituted (C1-C15) alkyl and optionally substituted (C1-C30) heteroalkyl, provided that only one of R ^Y and R ^z is hydrogen, or

(ii) each R ^Y and R ^z come together with the N atom to which they are attached to form an optionally substituted (C3-C14) heterocyclic ring or an optionally substituted (C5- C10) bicyclic heterocyclic ring.

[00039] In some embodiments, the cyclic peptide further comprises R ^NT and R ^CT and is of Formula (D):

R ^NT -Z ³ -Z ⁴ -Z ⁵ -Z ⁶ -Z ⁷ -Z ⁸ -Z ⁹ -Z ¹⁰ -Z ⁿ -Z ¹² -Z ¹³ -Z ¹⁴ -Z ¹⁵ -Z ¹⁶ -R ^CT (D), wherein R ^NT , Z ³ , Z ⁴ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ⁹ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ , Z ¹⁶ and R ^CT are as defined herein.

[00040] In some embodiments, eight of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00041] In some embodiments, seven or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00042] In some embodiments, seven of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position. [00043] In some embodiments, six or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00044] In some embodiments, six of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00045] In some embodiments, five or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00046] In some embodiments, five of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00047] In some embodiments, four or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00048] In some embodiments, four of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00049] In some embodiments, three or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00050] In some embodiments, three of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00051] In some embodiments, two or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00052] In some embodiments, two of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00053] In some embodiments, one or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00054] In some embodiments, one of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, is independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00055] In some embodiments, none of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00056] In some embodiments, seven or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00057] In some embodiments, seven of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00058] In some embodiments, six or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00059] In some embodiments, six of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position. [00060] In some embodiments, five or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00061] In some embodiments, five of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00062] In some embodiments, four or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00063] In some embodiments, four of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00064] In some embodiments, three or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00065] In some embodiments, three of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00066] In some embodiments, two or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00067] In some embodiments, two of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00068] In some embodiments, one or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00069] In some embodiments, one of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, is independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00070] In some embodiments, four or fewer of the amino acid residues at positions Z ⁵ , Z ⁸ , Z ¹⁰ , and Z ¹³ are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00071] In some embodiments, four of the amino acid residues at positions Z ⁵ , Z ⁸ , Z ¹⁰ , and Z ¹³ are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00072] In some embodiments, three or fewer of the amino acid residues at positions Z ⁵ , Z ⁸ , Z ¹⁰ , and Z ¹³ are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00073] In some embodiments, three of the amino acid residues at positions Z ⁵ , Z ⁸ , Z ¹⁰ , and Z ¹³ are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00074] In some embodiments, two or fewer of the amino acid residues at positions Z ⁵ , Z ⁸ , Z ¹⁰ , and Z ¹³ are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00075] In some embodiments, two of the amino acid residues at positions Z ⁵ , Z ⁸ , Z ¹⁰ , and Z ¹³ are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00076] In some embodiments, one or fewer of the amino acid residues at positions Z ⁵ , Z ⁸ , Z ¹⁰ , and Z ¹³ are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00077] In some embodiments, one of the amino acid residues at positions Z ⁵ , Z ⁸ , Z ¹⁰ , and Z ¹³ is independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[00078] In some embodiments, the amino acid residue at position Z ³ , when an amino acid residue is present at the position, is not replaced.

[00079] In some embodiments, the amino acid residue at position Z ⁶ is not replaced.

[00080] In some embodiments, the amino acid residue at position Z ⁷ is not replaced. [00081] In some embodiments, the amino acid residue at position Z ¹¹ is not replaced.

[00082] In some embodiments, the amino acid residue at position Z ¹² , when an amino acid residue is present at the position, is not replaced.

[00083] In some embodiments, the amino acid residue at position Z ¹⁴ is not replaced.

[00084] In some embodiments, the amino acid residue at position Z ¹⁵ , when an amino acid residue is present at the position, is not replaced.

[00085] In some embodiments, the amino acid residue at position Z ¹⁶ , when an amino acid residue is present at the position, is not replaced.

[00086] In some embodiments, the amino acid residues at positions Z ⁶ and Z ¹¹ are not replaced.

[00087] In some embodiments, the amino acid residues at positions Z ⁶ and Z ¹⁴ are not replaced.

[00088] In some embodiments, the amino acid residues at positions Z ¹¹ and Z ¹⁴ are not replaced.

[00089] In some embodiments, the amino acid residues at positions Z ⁶ , Z ¹¹ and Z ¹⁴ are not replaced.

[00090] In some embodiments, the amino acid residues at positions Z ⁶ , Z ⁷ , Z ¹¹ and Z ¹⁴ are not replaced.

[00091] In some embodiments, the amino acid residues at positions Z ⁶ , Z ¹¹ , Z ¹² and Z ¹⁴ , when an amino acid residue is present at the position, are not replaced.

[00092] In some embodiments, the amino acid residues at positions Z ⁶ , Z ⁷ , Z ¹¹ , Z ¹² and Z ¹⁴ , when an amino acid residue is present at the position, are not replaced.

[00093] In some embodiments, the amino acid residues at positions Z ³ , Z ⁶ , Z ⁷ , Z ¹¹ , Z ¹² and Z ¹⁴ , when an amino acid residue is present at the position, are not replaced.

[00094] In some embodiments, the amino acid residues at positions Z ⁶ , Z ⁷ , Z ¹¹ , Z ¹² , Z ¹⁴ and Z ¹⁵ , when an amino acid residue is present at the position, are not replaced.

[00095] In some embodiments, the amino acid residues at positions Z ³ , Z ⁶ , Z ⁷ , Z ¹¹ , Z ¹² , Z ¹⁴ and Z ¹⁵ , when an amino acid residue is present at the position, are not replaced.

[00096] In some embodiments, the amino acid residues at positions Z ⁶ , Z ⁷ , Z ¹¹ , Z ¹² , Z ¹⁴ and Z ¹⁶ , when an amino acid residue is present at the position, are not replaced.

[00097] In some embodiments, the amino acid residues at positions Z ³ , Z ⁶ , Z ⁷ , Z ¹¹ , Z ¹² , Z ¹⁴ and Z ¹⁶ , when an amino acid residue is present at the position, are not replaced. [00098] In some embodiments, the amino acid residues at positions Z ⁶ , Z , Z ¹¹ , Z ¹² , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are not replaced.

[00099] In some embodiments, the amino acid residues at positions Z ³ , Z ⁶ , Z ⁷ , Z ¹¹ , Z ¹² , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are not replaced.

[000100] In some embodiments, three or fewer of the amino acid residues at positions Z ³ , Z ¹² , Z ¹⁵ and Z ¹⁶ are absent.

[000101] In some embodiments, three of the amino acid residues at positions Z ³ , Z ¹² , Z ¹⁵ and Z ¹⁶ are absent.

[000102] In some embodiments, two or fewer of the amino acid residues at positions Z ³ , Z ¹² , Z ¹⁵ and Z ¹⁶ are absent.

[000103] 7 In some embodiments, two of the amino acid residues at positions Z ³ , Z ¹² , Z ¹⁵ and Z ¹⁶ are absent.

[000104] In some embodiments, one or fewer of the amino acid residues at positions Z ³ , Z ¹² , Z ¹⁵ and Z ¹⁶ are absent.

[000105] In some embodiments, one of the amino acid residues at positions Z ³ , Z ¹² , Z ¹⁵ and Z ¹⁶ is absent.

[000106] In some embodiments, none of the amino acid residues at positions Z ³ , Z ¹² , Z ¹⁵ and Z ¹⁶ are absent.

[000107] In some embodiments, the amino acid residue at position Z ³ is absent and the amino acid residues at positions Z ¹² , Z ¹⁵ and Z ¹⁶ are present.

[000108] In some embodiments, the amino acid residue at position Z ¹² is absent and the amino acid residues at positions Z ³ , Z ¹⁵ and Z ¹⁶ are present.

[000109] In some embodiments, the amino acid residue at position Z ¹⁵ is absent and the amino acid residues at positions Z ³ , Z ¹² and Z ¹⁶ are present.

[000110] In some embodiments, the amino acid residue at position Z ¹⁶ is absent and the amino acid residues at positions Z ³ , Z ¹² and Z ¹⁵ are present.

[000111] In some embodiments, the amino acid residues at positions Z ³ and Z ¹⁶ are absent and the amino acid residues at positions Z ¹² and Z ¹⁵ are present.

[000112] In some embodiments, the amino acid residues at positions Z ³ , Z ¹⁵ and Z ¹⁶ are absent and the amino acid residue at position Z ¹² is present.

[000113] In some embodiments, at least one of R ^NT , when present, and/or R ^CT , when present, and/or the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) at least one quaternary amine.

[000114] In some embodiments, at least one of R ^NT , when present, and/or R ^CT , when present, and/or the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) a quaternary amine.

[000115] In some embodiments, at least one of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) at least one quaternary amine.

[000116] In some embodiments, at least one of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) a quaternary amine.

[000117] In some embodiments, at least one of R ^NT , when present, and/or R ^CT , when present, and/or the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹² and/or Z ¹³ , when an amino acid residue is present at the position, each independently comprise(s) at least one quaternary amine.

[000118] In some embodiments, at least one of R ^NT , when present, and/or R ^CT , when present, and/or the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹² , and/or Z ¹³ , when an amino acid residue is present at the position, each independently comprise(s) a quaternary amine.

[000119] In some embodiments, at least one of R ^NT , when present, and/or the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , and/or Z ¹³ , when an amino acid residue is present at the position, each independently comprise(s) at least one quaternary amine.

[000120] In some embodiments, at least one of R ^NT , when present, and/or the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , and/or Z ¹³ , when an amino acid residue is present at the position, each independently comprise(s) a quaternary amine.

[000121] In some embodiments, R ^NT and the amino acid residues at positions Z ⁵ and Z ¹⁰ each independently comprise at least one quaternary amine.

[000122] In some embodiments, R ^NT and the amino acid residues at positions Z ⁵ and Z ¹⁰ each independently comprise a quaternary amine.

[000123] In some embodiments, R ^NT and the amino acid residues at positions Z ⁸ and Z ¹⁰ each independently comprise at least one quaternary amine.

[000124] In some embodiments, R ^NT and the amino acid residues at positions Z ⁸ and Z ¹⁰ each independently comprise a quaternary amine. [000125] In some embodiments, R ^NT and the amino acid residues at positions Z ⁸ and Z ¹³ each independently comprise at least one quaternary amine.

[000126] In some embodiments, R ^NT and the amino acid residues at positions Z ⁸ and Z ¹³ each independently comprise a quaternary amine.

[000127] In some embodiments, the amino acid residues at positions Z ⁸ , Z ¹⁰ and Z ¹³ each independently comprise at least one quaternary amine.

[000128] In some embodiments, the amino acid residues at positions Z ⁸ , Z ¹⁰ and Z ¹³ each independently comprise a quaternary amine.

[000129] In some embodiments, R ^NT and the amino acid residue at position Z ³ each independently comprise at least one quaternary amine.

[000130] In some embodiments, R ^NT and the amino acid residue at position Z ³ each independently comprise a quaternary amine.

[000131] In some embodiments, R ^NT and R ^CT each independently comprise at least one quaternary amine.

[000132] In some embodiments, R ^NT and R ^CT each comprise a quaternary amine.

[000133] In some embodiments, R ^NT and the amino acid residue at position Z ⁸ each independently comprise at least one quaternary amine.

[000134] In some embodiments, R ^NT and the amino acid residue at position Z ⁸ each independently comprise a quaternary amine.

[000135] In some embodiments, R ^NT and the amino acid residue at position Z ¹⁰ each independently comprise at least one quaternary amine.

[000136] In some embodiments, R ^NT and the amino acid residue at position Z ¹⁰ each independently comprise a quaternary amine.

[000137] In some embodiments, the amino acid residues at positions Z ³ and Z ⁸ each independently comprise at least one quaternary amine.

[000138] In some embodiments, the amino acid residues at positions Z ³ and Z ⁸ each independently comprise a quaternary amine.

[000139] In some embodiments, the amino acid residues at positions Z ³ and Z ¹⁰ each independently comprise at least one quaternary amine.

[000140] In some embodiments, the amino acid residues at positions Z ³ and Z ¹⁰ each independently comprise a quaternary amine.

[000141] In some embodiments, the amino acid residues at positions Z ³ and Z ¹⁰ each independently comprise at least one quaternary amine. [000142] In some embodiments, the amino acid residues at positions Z ³ and Z ¹⁰ each independently comprise a quaternary amine.

[000143] In some embodiments, the amino acid residues at positions Z ⁸ and Z ¹⁰ each independently comprise at least one quaternary amine.

[000144] In some embodiments, the amino acid residues at positions Z ⁸ and Z ¹⁰ each independently comprise a quaternary amine.

[000145] In some embodiments, the amino acid residues at positions Z ⁸ and Z ¹³ each independently comprise at least one quaternary amine.

[000146] In some embodiments, the amino acid residues at positions Z ⁸ and Z ¹³ each independently comprise a quaternary amine.

[000147] In some embodiments, the amino acid residues at positions Z ¹⁰ and Z ¹³ each independently comprise at least one quaternary amine.

[000148] In some embodiments, the amino acid residues at positions Z ¹⁰ and Z ¹³ each independently comprise a quaternary amine.

[000149] In some embodiments, R ^NT comprises at least one quaternary amine.

[000150] In some embodiments, R ^NT comprises a quaternary amine.

[000151] In some embodiments, R ^CT comprises at least one quaternary amine.

[000152] In some embodiments, R ^CT comprises a quaternary amine.

[000153] In some embodiments, the amino acid residue at position Z ³ comprises at least one quaternary amine.

[000154] In some embodiments, the amino acid residue at position Z ³ comprises a quaternary amine.

[000155] In some embodiments, the amino acid residue at position Z ⁵ comprises at least one quaternary amine.

[000156] In some embodiments, the amino acid residue at position Z ⁵ comprises a quaternary amine.

[000157] In some embodiments, the amino acid residue at position Z ⁸ comprises at least one quaternary amine.

[000158] In some embodiments, the amino acid residue at position Z ⁸ comprises a quaternary amine.

[000159] In some embodiments, the amino acid residue at position Z ¹⁰ comprises at least one quaternary amine.

[000160] In some embodiments, the amino acid residue at position Z ¹⁰ comprises a quaternary amine. [000161] In some embodiments, the amino acid residue at position Z ¹² comprises at least one quaternary amine.

[000162] In some embodiments, the amino acid residue at position Z ¹² comprises a quaternary amine.

[000163] In some embodiments, the amino acid residue at position Z ¹³ comprises at least one quaternary amine.

[000164] In some embodiments, the amino acid residue at position Z ¹³ comprises a quaternary amine.

[000165] In some embodiments, the at least one quaternary amine is one or two quaternary amines.

[000166] In some embodiments, each quaternary amine is independently selected from the group consisting of: wherein each R ^ZA is independently selected from the group consisting of: optionally substituted (C1-C20) alkyl and optionally substituted (C1-C20) heteroalkyl; wherein each R ^ZA and R ^ZB is independently selected from the group consisting of: optionally substituted (C1-C20) alkyl and optionally substituted (C1-C20) heteroalkyl;

(c) wherein:

(c)(i) each R ^ZA , R ^ZB and R ^zc is independently selected from the group consisting of: optionally substituted (C1-C20) alkyl and optionally substituted (C1-C20) heteroalkyl, (c)(ii) each R ^ZA is independently selected from the group consisting of: optionally substituted (C1-C20) alkyl and optionally substituted (C1-C20) heteroalkyl, and each R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted (C3-C14) heterocyclic ring, or (c)(iii) each R ^ZA , R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted (C5-C10) bicyclic heterocyclic ring; wherein:

(d)(i) each R ^ZA and R ^ZB is independently selected from the group consisting of: optionally substituted (C1-C20) alkyl and optionally substituted (C1-C20) heteroalkyl, and each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted (C3-C14) heterocyclyl, or

(d)(ii) each R ^ZA and R ^ZB come together with the N atom to which they are attached to form an optionally substituted (C3-C14) heterocyclyl, and each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted (C3-C14) heterocyclyl, or

(d)(iii) each R ^7A and R ^ZB come together with the N atom to which they are attached to form an optionally substituted (C3-C14) heterocyclyl, and each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted (C3-C14) heterocyclic ring; , wherein each R ^ZA and R ^ZB come together with the N atom to which they are attached to form an optionally substituted (C5-C14) heteroaromatic ring, and , wherein each R ^7A is independently selected from the group consisting of: optionally substituted (C1-C20) alkyl and optionally substituted (C1-C20) heteroalkyl, and each R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted (C5-C14) heteroaryl.

[000167] In some embodiments, each quaternary amine is independently selected from the group consisting of: wherein each R ^ZA is independently selected from the group consisting of: optionally substituted (Ci-Cie) alkyl and optionally substituted (Ci-Cs) heteroalkyl; wherein each R ^ZA and R ^ZB is independently selected from the group consisting of: optionally substituted (Ci-Cie) alkyl and optionally substituted (Ci-Cs) heteroalkyl; wherein:

(c)(i) each R ^ZA , R ^ZB and R ^zc is independently selected from the group consisting of: optionally substituted (Ci-Cie) alkyl and optionally substituted (Ci-Cs) heteroalkyl, (c)(ii) each R ^ZA is independently selected from the group consisting of: optionally substituted (Ci-Cie) alkyl and optionally substituted (Ci-Cs) heteroalkyl, and each R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclic ring, or

(c)(iii) each R ^ZA , R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted (Cs) bicyclic heterocyclic ring; i herein:

(d)(i) each R ^ZA and R ^ZB is independently selected from the group consisting of: optionally substituted (Ci-Cie) alkyl and optionally substituted (Ci-Cs) heteroalkyl, and each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclyl, or

(d)(ii) each R ^ZA and R ^ZB come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclyl, and each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclyl, or

(d)(iii) each R ^7A and R ^ZB come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclyl, and each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclic ring;

(e) , wherein each R ^ZA and R ^ZB come together with the N atom to which they are attached to form an optionally substituted (Ce) heteroaromatic ring; and , wherein each R ^ZA is independently selected from the group consisting of: optionally substituted (Ci-Cie) alkyl and optionally substituted (Ci-Cs) heteroalkyl, and each R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted (Ce) heteroaryl.

[000168] In some embodiments, each quaternary amine is independently selected from the group consisting of: wherein each R ^ZA is independently selected from the group consisting of: optionally substituted (Ci-Cie) alkyl and optionally substituted (Ci-Cs) heteroalkyl; wherein each R ^7A and R ^ZB is independently selected from the group consisting of: optionally substituted (Ci-Cie) alkyl and optionally substituted (Ci-Cs) heteroalkyl; wherein:

(c)(i) each R ^ZA , R ^ZB and R ^zc is independently selected from the group consisting of: optionally substituted (Ci-Cie) alkyl and optionally substituted (Ci-Cs) heteroalkyl, (c)(ii) each R ^ZA is independently selected from the group consisting of: optionally substituted (C1-C3) alkyl and optionally substituted (C1-C3) heteroalkyl, and each R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclic ring, or

(c)(iii) each R ^ZA , R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted (Cs) bicyclic heterocyclic ring; wherein:

(d)(i) each R ^ZA and R ^ZB is independently selected from the group consisting of: optionally substituted (C1-C3) alkyl and optionally substituted (C1-C3) heteroalkyl, and each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclyl, or

(d)(ii) each R ^ZA and R ^ZB come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclyl, and each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclyl, or

(d)(iii) each R ^ZA and R ^ZB come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclyl, and each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclic ring;

(e) , wherein each R ^ZA and R ^ZB come together with the N atom to which they are attached to form an optionally substituted (Ce) heteroaromatic ring; and , wherein each R ^ZA is independently selected from the group consisting of: optionally substituted (C1-C3) alkyl and optionally substituted (C1-C3) heteroalkyl, and each R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted (Ce) heteroaryl.

[000169] In some embodiments, when each R^, R ^ZB and/or R ^zc , when present, is/are an optionally substituted alkyl, each optionally substituted alkyl is unsubstituted.

[000170] In some embodiments, when each R ^ZA , R ^ZB and/or R ^zc , when present, is/are an optionally substituted heteroalkyl, each optionally substituted heteroalkyl is unsubstituted.

[000171] In some embodiments, when each R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted heterocyclic ring, the optionally substituted heterocyclic ring is unsubstituted or substituted with one or more substitutents independently selected from the group consisting of Fluoro and (C1-C3) alkyl.

[000172] In some embodiments, when each R ^ZA , R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted bicyclic heterocyclic ring, the optionally substituted bicyclic heterocyclic ring is unsubstituted.

[000173] In some embodiments, when each R ^ZA and R ^ZB come together with the N atom to which they are attached to form an optionally substituted heterocyclyl, the optionally substituted heterocyclyl is unsubstituted.

[000174] In some embodiments, when each R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted heteroaryl, the optionally substituted heteroaryl is unsubstituted.

[000175] In some embodiments, when each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted heterocyclyl, the optionally substituted heterocyclyl is unsubstituted.

[000176] In some embodiments, when each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted heterocyclic ring, the optionally substituted heterocyclic ring is unsubstituted. [000177] In some embodiments, when each R ⁷ and R ^ZB come together with the N atom to which they are attached to form an optionally substituted heteroaromatic ring, the optionally substituted heteroaromatic ring is unsubstituted.

[000178] In some embodiments, each quaternary amine is independently selected from

[000179] In some embodiments, each quaternary amine has an AN' counterion that is the same for each quaternary amine and is selected from the group consisting of: acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate.

[000180] In some embodiments, at least one of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) at least one masked amine and/or masked amide.

[000181] In some embodiments, at least one of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) a masked amine and/or masked amide.

[000182] In some embodiments, at least one of the amino acid residues at positions Z ⁵ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) at least one masked amine and/or masked amide.

[000183] In some embodiments, at least one of the amino acid residues at positions Z ⁵ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) a masked amine and/or masked amide.

[000184] In some embodiments, at least one of the amino acid residues at positions Z ⁵ , Z ⁸ , and/or Z ¹³ , each independently comprise(s) at least one masked amine and/or masked amide. [000185] In some embodiments, at least one of the amino acid residues at positions Z ⁵ , Z ⁸ , and/or Z ¹³ , each independently comprise(s) a masked amine and/or masked amide.

[000186] In some embodiments, the amino acid residue at position Z ⁵ comprises at least one masked amine and/or masked amide.

[000187] In some embodiments, the amino acid residue at position Z ³ comprises a masked amine and/or masked amide.

[000188] In some embodiments, the amino acid residue at position Z ⁸ comprises at least one masked amine and/or masked amide.

[000189] In some embodiments, the amino acid residue at position Z ⁸ comprises a masked amine and/or masked amide.

[000190] In some embodiments, the amino acid residue at position Z ¹³ comprises at least one masked amine and/or masked amide.

[000191] In some embodiments, the amino acid residue at position Z ¹³ comprises a masked amine and/or masked amide.

[000192] In some embodiments, at least one of the masked amine(s) is an amine in a backbone amide, wherein each amine in a backbone amide is independently substituted with (C1-C3) alkyl.

[000193] In some embodiments, at least one of the masked amine(s) and/or masked amide(s) is present in the side chain of the amino acid residue comprising said masked amine and/or masked amide(s).

[000194] In some embodiments, at least one of the masked amine(s) and/or masked amide(s) is independently selected from the group consisting of:

(a) , wherein each R ^YA is independently selected from the group consisting of: optionally substituted (C1-C10) alkyl and optionally substituted (C1-C20) heteroalkyl, and each R ^YB is independently selected from the group consisting of: hydrogen, optionally substituted (C1-C10) alkyl and optionally substituted (C1-C20) heteroalkyl; wherein each R ^YC is independently selected from the group consisting of: optionally substituted (C1-C10) alkyl and optionally substituted (C1-C20) heteroalkyl, and each R' ^{( D} is independently selected from the group consisting of: hydrogen, optionally substituted (C1-C10) alkyl and optionally substituted (C1-C20) heteroalkyl; wherein each R ^YF is independently selected from the group consisting of: optionally substituted (C1-C10) alkyl and optionally substituted (C1-C20) heteroalkyl, and each R ^iF is independently selected from the group consisting of: hydrogen, optionally substituted (C1-C10) alkyl and optionally substituted (C1-C20) heteroalkyl; and wherein each R ^YG and R ^YH is independently selected from the group consisting of: optionally substituted (C1-C10) alkyl and optionally substituted (C1-C20) heteroalkyl.

[000195] In some embodiments, at least one of the masked amine(s) and/or masked amides is independently selected from the group consisting of:

(a) , wherein each R ^YA is independently selected from the group consisting of: optionally substituted (C1-C5) alkyl and optionally substituted (C1-C15) heteroalkyl, and each R ^YB is independently selected from the group consisting of: hydrogen, optionally substituted (C1-C5) alkyl and optionally substituted (C1-C15) heteroalkyl; wherein each R ^YC is independently selected from the group consisting of: optionally substituted (C1-C5) alkyl and optionally substituted (C1-C15) heteroalkyl, and each R' ^,D is independently selected from the group consisting of: hydrogen, optionally substituted (C1-C5) alkyl and optionally substituted (C1-C15) heteroalkyl;

(c) , wherein each R™ is independently selected from the group consisting of: optionally substituted (C1-C5) alkyl and optionally substituted (C1-C15) heteroalkyl, and each R ^YF is independently selected from the group consisting of: hydrogen, optionally substituted (C1-C5) alkyl and optionally substituted (C1-C15) heteroalkyl; and

(d) , wherein each R ^YG and R ^YH is independently selected from the group consisting of: optionally substituted (C1-C5) alkyl and optionally substituted (C1-C15) heteroalkyl.

[000196] In some embodiments, when each R ^YA R ^YB , R ^YC R ^YD , R™. R ^YF , R ^YG and/or R ^YH is optionally substituted alkyl, each optionally substituted alkyl is independently unsubstituted or substituted with one or more substitutents independently selected from the group consisting of: -CO2H and a quaternary amine as described herein, for example, -N ⁺ (CH3)3.

[000197] In some embodiments, when each R ^YA R ^YB , R ^YC R ^YD , R™ R ^YF , R ^YG and/or R ^YH is optionally substituted heteroalkyl, each optionally substituted heteroalkyl is independently unsubstituted or substituted with one or more substitutents independently selected from the group consisting of: -CO2H and a quaternary amine as described herein, for example, -N ⁺ (CH3)3.

[000198] In some embodiments, at least one of the masked amine(s) and/or masked amide(s) is independently selected from the group consisting of:

[000199] In some embodiments, the at least one amino acid residue/ s) each independently comprising at least one masked amine and/or masked amide is/are independently selected from the group consisting of: NMe7MeW, AAMPhe, Paf(Ac), AEF(Ac), AcAEF, AEF(AcCh), AEF(Me)2, AEF(N(Me)2), AEF(MePrpa), AEF(NMe), Dab(NMeAc), Dab(NMecam), Dab(NMeCOmPEG6), Dab(NMecPEG2a), Dab(NMecPEG3a), Dab(NMecPEG5a), Dab(NMecPEG5aCO)-, Dap(Ac), Dap(NMeAc), K(Ac), K(NMeAc), K(NMeCOmPEG6), K(NMeCOPEG4N+Me3), K(NMeC0PEG5a), K(NMecPEG5a), K(NMePEG5a), K(NMePEG3a), K(NmPEG6Ac), NMe3Pya, NMebAla, NMeDTyr, N(N(Me)), N(NMe), N(N(Me)2), Q(N(Me)2), Q(NHtBu) and Tetrazole(NMe).

[000200] In some embodiments, the at least one amino acid residue(s) each independently comprising at least one masked amine is not K(Ac).

[000201] In some embodiments, when the amino acid residue at position Z ³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ³ is replaced with an amino acid residue selected from the group consisting of: APEG2ser, APEG2Ser, APEG2Ser(S*), e(c), e(C), hk(Me)3, k(5cpa), k(cPEG3a), k(d), k(D), k(dPEG12Ac), k(dPEG6Ac), k(dPEG9Ac), k(Me)3, K(Me)3, k(PEG2PEG2gEC12), k(PEG2PEG2gEC14), k(PEG2PEG2PEG2PEG2gEC12), k(PEG2PEG6gEC12), SP6, APEG2Ser(RS), gPEG2Ser and k(PEG2PEG2gE(c)C12.

[000202] In some embodiments, when the amino acid residue at position Z ³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ³ is replaced with an amino acid residue comprising at least one quaternary amine selected from the group consisting of: APEG2ser, APEG2Ser, e(c), e(C), hk(Me)3, k(5cpa), k(cPEG3a), k(d), k(D), K(Me)3 and k(Me)3.

[000203] In some embodiments, when the amino acid residue at position Z ³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ³ is replaced with an amino acid residue that is r substituted on the side chain with one or more groups selected from: -OH, - (C1-C4) alkyl, -O(Ci-C ₄ ) alkyl, and -CN.

[000204] In some embodiments, when the amino acid residue at position Z ³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ³ is replaced with a hydrophilic amino acid residue.

[000205] In some embodiments, when the amino acid residue at position Z ³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ³ is replaced with a basic amino acid residue.

[000206] In some embodiments, when the amino acid residue at position Z ³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ³ is replaced with an acidic amino acid residue.

[000207] In some embodiments, the amino acid residue at position Z ³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[000208] In some embodiments, the amino acid residue at position Z ⁴ is the residue of Abu or the residue of an amino acid comprising a sulfhydryl group selected from the group consisting of: Pen, C or aMeC.

[000209] In some embodiments, the amino acid residue at position Z ⁴ is the residue of Pen.

[000210] In some embodiments, when the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁵ is replaced with an amino acid residue selected from the group consisting of: A, APEG2Ser(S*), Dab(Me)3, F, Gab, K(cPEG3a), K(Me)3, K(PEG2PEG2gEC12), K(PEG2PEG2gEC14), L, N, N(N(Me)), N(NMe), Q and W.

[000211] In some embodiments, when the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁵ is replaced with an amino acid residue comprising at least one quaternary amine selected from the group consisting of: APEG2Ser(S*), Dab(Me)3, K(cPEG3a) and K(Me)3.

[000212] In some embodiments, when the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is N(N(Me)2) substituted on the side chain with one or more groups selected from: -OH, -(Ci-C ₄ ) alkyl, -O(Ci-C ₄ ) alkyl, and -ON.

[000213] In some embodiments, when the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁵ is replaced with an aromatic amino acid residue.

[000214] In some embodiments, when the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁵ is replaced with an aliphatic amino acid residue. [000215] In some embodiments, when the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁵ is replaced with a hydrophilic amino acid residue.

[000216] In some embodiments, when the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁵ is replaced with a basic amino acid residue.

[000217] In some embodiments, when the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁵ is replaced with an acidic amino acid residue.

[000218] In some embodiments, the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[000219] In some embodiments, when the amino acid residue at position Z ⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁶ is replaced with an amino acid residue selected from the group consisting of: A and L.

[000220] In some embodiments, when the amino acid residue at position Z ⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁶ is replaced with an amino acid residue that is T substituted on the side chain with one or more groups selected from: -OH, - (C1-C4) alkyl, -O(Ci-C ₄ ) alkyl, and -CN.

[000221] In some embodiments, when the amino acid residue at position Z ⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁶ is replaced with an aliphatic amino acid residue.

[000222] In some embodiments, when the amino acid residue at position Z ⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁶ is replaced with a polar amino acid residue. [000223] In some embodiments, the amino acid residue at position Z ⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[000224] In some embodiments, when the amino acid residue at position Z ⁷ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁷ is replaced with an amino acid residue selected from the group consisting of: W, 7(3NAcPh)W, 7CF3W, NMe7MeW, 2Nal, A, F and L.

[000225] In some embodiments, when the amino acid residue at position Z ⁷ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁷ is replaced with an amino acid residue that is 7MeW substituted on the side chain with one or more groups selected from: - OH, -(C1-C4) alkyl, -O(Ci-C ₄ ) alkyl, and -CN.

[000226] In some embodiments, when the amino acid residue at position Z ⁷ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁷ is replaced with an aromatic amino acid residue.

[000227] In some embodiments, when the amino acid residue at position Z ⁷ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁷ is replaced with an aliphatic amino acid residue.

[000228] In some embodiments, the amino acid residue at position Z ⁷ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[000229] In some embodiments, when the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁸ is replaced with an amino acid residue selected from the group consisting of: K(NMeAC), K(NMeAc), Q, 4AmPhe, A, AIB, APEG2Ser, APEG2Ser(R*), APEG2Ser(S*), Cit, Dab(NMeAc), Dab(NMecarn), Dab(NMeCarn), Dab(NMeCOmPEG6), Dab(NMecPEG2a), Dab(NMecPEG3a), Dab(NMecPEG5a), Dap(NMeAc), F, K(4cpg), K(Ac), K(cPEG3a), K(Me)3, K(NMeCOmPEG6), K(NMePEG3a), K(NmPEG6Ac), K(PEG2PEG2gEC12), K(PEG2PEG2gEC14), L, Paf(Ac), Q(N(Me)2), Q(NHtBu), W, Y and K(cPEG3aCO). [000230] In some embodiments, when the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁸ is replaced with an amino acid residue comprising at least one quaternary amine selected from the group consisting of: APEG2Ser, APEG2ser, APEG2Ser(R*), APEG2Ser(S*), Dab(NMecarn), Dab(NMeCarn), Dab(NMecPEG2a), Dab(NMecPEG3a), Dab(NMecPEG5a), K(cPEG3a), K(Me)3 and K(NMePEG3a).

[000231] In some embodiments, when the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is K(NMeAc) substituted on the side chain with one or more groups selected from: -OH, -(Ci-C ₄ ) alkyl, -O(Ci-C ₄ ) alkyl, and -CN.

[000232] In some embodiments, when the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁸ is replaced with an aromatic amino acid residue.

[000233] In some embodiments, when the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁸ is replaced with an aliphatic amino acid residue.

[000234] In some embodiments, when the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁸ is replaced with a hydrophilic amino acid residue.

[000235] In some embodiments, when the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁸ is replaced with a basic amino acid residue.

[000236] In some embodiments, when the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁸ is replaced with an acidic amino acid residue. [000237] In some embodiments, the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[000238] In some embodiments, the amino acid residue at position Z ⁹ is the residue of an amino acid comprising a sulfhydryl group selected from the group consisting of: Pen, C or aMeC.

[000239] In some embodiments, the amino acid residue at position Z ⁹ is the residue of Pen.

[000240] In some embodiments, when the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue selected from the group consisting of: AEF, 4DMPEF, 4DMPzEF, 4TMABYF, ACHMF, AEF((Ch)cPEG3a), AEF(Ac), AEF(AcCh), AEF(aPEG2a), AEF(BisMEP), AEF(BisMEPa), AEF(BisPEG2a)(RS), AEF(BisPEG2a)(S*),

AEF(G), AEF(Me)2, AEF(MEP), AEF(MePrpa), AEF(N(Me)2), AEF(NHCh), AEF(NHcPEG3a), AEF(NMe), AEF(NMe2mPEG3), AEF(NMe3), AEF(NMeBismPEG3), AEF(NMePEG2a), AEF(NmPEG6), AEF(NsCh), AEF(PEG2a), AEF(SPD), APEG2F, APEG3F, dFPPEG3F, Diazabiclyclooctane F, DMMMF, DMPMF, DMTASF, F(4G), F(4N3), F(4TzlDMA4mPEG), F(4TzlMME), F(4TzlMMol), F(4TzlMMo3), F(4TzlMMo4), F(4TzlTMAl), F(4TzlTMA2), F(4TzlTMA3), F(4TzlTMA4), F(4TzlTMA5), GPEG3F, hFTMAPF, MMoEF, MMoPF, MMPEG3F, morfTMA4F, mPEG2TMA2F, mPEG2TMA4F, mPEG3TMA4F, MPzPEG3F, MTASF, NPyEF, NPyPEG3F, PiperazinequatF, TBAPEG3F, TMA3F, TMA4F, TMA6F, TMA8F, Tzl(Ch), TzlChmPEG, TzlChmPEG3, Y(C9OH), Y(OEOXIMECh), Y(OTzlCh), Y(OTzlChC16), Y(OTzlChC8), Y(OTzlClaC8), Y(OTzlChmPEG), Y(OTzlChmPEG3), Y(OTzlPEG3a), Y(OTzlPEG4a), Y(OTzlTMA4), Y(OZOXIMECh), YC8CO(NHPEG3a), YC8COPip, YCF2H, ACHMF(R*, S*), ACHMF(S*, S*), AEF(cPEG3a), APF, F(4TzlAme2), F(4TzlG2), F(4TzlMMo7) and F(4TzlTMA7).

[000241] In some embodiments, when the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue comprising at least one quaternary amine selected from the group consisting of: 4DMPEF, 4DMPzEF, 4TMABYF, ACHMF, ACHMF(R*, S*), ACHMF(S*, S*), AEF((Ch)cPEG3a), AEF(AcCh), AEF(aPEG2a), AEF(cPEG3a), AEF(BisMEPa), AEF(BisPEG2a)(RS), AEF(BisPEG2a)(S*), AEF(MePrpa), AEF(NHcPEG3a), AEF(NMe2mPEG3), AEF(NMe3), AEF(NMeBismPEG3), AEF(NMePEG2a), AEF(NsCh), AEF(NHCh), AEF(PEG2a), AEF(SPD), APEG2F, APEG3F, dFPPEG3F, Diazabiclyclooctane6F, DMMMF, DMPMF, DMTASF, F(4TzlDMA4mPEG), F(4TzlMMol), F(4TzlMMo3), F(4TzlMMo4), F(4TzlTMAl), F(4TzlTMA2), F(4TzlTMA3), F(4TzlTMA4), F(4TzlTMA5), F(4TzlMMo7), F(4TzlTMA7), hFTMAPF, MMoEF, MMoPF, MMPEG3F, morfTMA4F, mPEG2TMA2F, mPEG2TMA4F, mPEG3TMA4F, MPzPEG3F, MTASF, NPyEF, NPyPEG3F, PiperazinequatF, TBAPEG3F, TMA3F, TMA4F, TMA6F, TMA8F, Tzl(Ch), TzlChmPEG, TzlChmPEG3, Y(OEOXIMECh), Y(OTzlCh), Y(OTzlChC16), Y(OTzlChC8), Y(OTzlClaC8), Y(OTzlChmPEG), Y(OTzlChmPEG3), Y(OTzlPEG3a), Y(OTzlPEG4a), Y(OTzlTMA4), Y(OZOXIMECh) and YC8CO(NHPEG3a).

[000242] In some embodiments, when the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is TMAPF substituted on the side chain with one or more groups selected from: - OH, -(C1-C4) alkyl, -O(Ci-C ₄ ) alkyl, and -CN.

[000243] In some embodiments, when the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue having the following structure: wherein:

Ln ¹ is selected from the group consisting of: an -0- atom, or _; wherein the right hand side of each depicted structure is bound to Ln ² ;

Ln ² is a linker moiety comprising:

(i) at least 4 atoms, for example an optionally substituted alkylene comprising at least C4 atoms, an optionally substituted heteroalkylene comprising at least C4 atoms, an optionally substituted heteroalkenylene comprising at least C4 atoms, an optionally substituted alkynylene comprising at least C4 atoms, an optionally substituted alkylene - optionally substituted carbocyclyl comprising at least C4 atoms, or an optionally substituted alkylene - optionally substituted heterocyclyl comprising at least C4 atoms, for example optionally substituted (C4-C20) alkylene, optionally substituted (C4-C20) heteroalkylene, optionally substituted (C4-C20) heteroalkenylene, optionally substituted (C4-C20) alkynylene, optionally substituted (C1-C3) alkylene - optionally substituted (C3-C10) carbocyclyl, or optionally substituted (C1-C3) alkylene

- optionally substituted (C3-C14) heterocyclyl, or

(ii) at least 2 atoms when example an optionally substituted alkylene comprising at least C2 atoms or an optionally substituted heteroalkylene comprising at least C2 atoms, for example optionally substituted (C2-C20) alkylene or optionally substituted (C2-C20) heteroalkylene; and

Qu ¹ is a quaternary amine.

[000244] In some embodiments, when the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue having the following structure:

wherein Ln ¹ , Ln ² and Qu ¹ are as defined herein.

[000245] In some embodiments, Qu ¹ is a quaternary amine as defined herein.

[000246] In some embodiments, Ln ¹ is an -0- atom.

[000247] In some embodiments, Ln ² is selected from the group consisting of: optionally substituted (C4-C15) alkylene, optionally substituted (C4-C15) heteroalkylene, optionally substituted (C4-C15) heteroalkenylene, optionally substituted (C4-C15) alkynylene, optionally substituted (C1-C3) alkylene - optionally substituted (C5-C7) carbocyclyl, or optionally substituted (C1-C3) alkylene - optionally substituted (C5- C7) heterocyclyl.

[000248] In some embodiments, Ln ² is selected from the group consisting of: optionally substituted (C4-C10) alkylene, optionally substituted (C4-C10) heteroalkylene, optionally substituted (C4-C10) heteroalkenylene, optionally substituted (C4-C10) alkynylene, optionally substituted (C1-C3) alkylene - optionally substituted (Ce) carbocyclyl, or optionally substituted (C1-C3) alkylene - optionally substituted (Ce) heterocyclyl.

[000249] In some embodiments, Ln ² is selected from the group consisting of: optionally substituted (C4-Cs) alkylene, optionally substituted (C4-Cs) heteroalkylene, optionally substituted (C4-C8) heteroalkenylene, optionally substituted (C4-C8) alkynylene, optionally substituted (C1-C3) alkylene - optionally substituted (Ce) carbocyclyl, or optionally substituted (C1-C3) alkylene - optionally substituted (Ce) heterocyclyl.

[000250] In some embodiments, when

Ln ² is selected from the group consisting of optionally substituted (C2-C15) alkylene or optionally substituted (C2-C15) heteroalkylene. [000251] In some embodiments, when

Ln ² is selected from the group consisting of optionally substituted (C2-C10) alkylene or optionally substituted (C2-C10) heteroalkylene.

[000252] In some embodiments, when

Ln ² is selected from the group consisting of optionally substituted (C2-C5) alkylene or optionally substituted (C2-C5) heteroalkylene.

[000253] In some embodiments, when Ln ² is optionally substituted alkylene, the optionally substituted alkylene is unsubstituted or is substituted with one or more substituents independently selected from the group consisting of Fluoro.

[000254] In some embodiments, when Ln ² is optionally substituted heteroalkylene, the optionally substituted heteroalkylene is unsubstituted or is substituted with one or more substituents independently selected from the group consisting of: (C1-C3) alkyl,

, =0 (i.e., two geminal hydrogens on a carbon atom of the heteroalkylene are replaced with the group =0), or a quaternary amine described herein, for example, -N ⁺ (CH3)3.

[000255] In some embodiments, when Ln ² is optionally substituted heteroalkenylene, the optionally substituted heteroalkenylene is unsubstituted.

[000256] In some embodiments, when Ln ² is optionally substituted alkynylene, the optionally substituted alkynylene is unsubstituted.

[000257] In some embodiments, when Ln ² is optionally substituted alkylene - optionally substituted carbocyclyl, the optionally substituted alkylene - optionally substituted carbocyclyl is unsubstituted.

[000258] In some embodiments, when Ln ² is optionally substituted alkylene - optionally substituted heterocyclyl, the optionally substituted alkylene - optionally substituted heterocyclyl is unsubstituted. [000259] In some embodiments, when the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue having the following structure: wherein:

Ln ³ is selected from the group consisting of: an -0- atom, or , wherein the right hand side of each depicted structure is bound to Ln ⁴ ;

Ln ⁴ is a linker moiety comprising at least 2 atoms, for example an optionally substituted alkylene comprising at least C2 atoms, an optionally substituted heteroalkylene comprising at least C2 atoms, or an optionally substituted alkynylene comprising at least C2 atoms, for example optionally substituted (C2-C20) alkylene, optionally substituted (C2-C20) heteroalkylene or optionally substituted (C2-C20) alkynylene; and

Qu ² is a (C3-C14) heterocyclyl quaternary amine, a (C5-C14) heteroaryl quaternary amine or a (C5-C14) bicyclic heterocyclyl quaternary amine, for example, a (C3-C14) heterocyclyl quaternary amine selected from the group consisting of: quaternary amine selected from the group consisting of: , or a (C5-

C14) bicyclic heterocyclyl quaternary amine selected from the group consisting of

[000260] In some embodiments, when the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue having the following structure: wherein Ln ³ , Ln ⁴ and Qu ² are as defined herein.

[000261] In some embodiments, Qu ² is a quaternary amine as defined herein.

[000262] In some embodiments, Ln ³ is an -O- atom.

[000263] In some embodiments, Ln ⁴ is selected from the group consisting of: optionally substituted (C2-C15) alkylene, optionally substituted (C2-C15) heteroalkylene or optionally substituted (C2-C15) alkynylene.

[000264] In some embodiments, Ln ⁴ is selected from the group consisting of: optionally substituted (C2-C10) alkylene, optionally substituted (C2-C10) heteroalkylene or optionally substituted (C2-C10) alkynylene.

[000265] In some embodiments, Ln ⁴ is selected from the group consisting of: optionally substituted (C2-Cs) alkylene, optionally substituted (C2-Cs) heteroalkylene or optionally substituted (C2-C8) alkynylene. [000266] In some embodiments, when Ln ⁴ is optionally substituted alkylene, the optionally substituted alkylene is unsubstituted or is substituted with one or more substituents independently selected from the group consisting of Fluoro.

[000267] In some embodiments, when Ln ⁴ is optionally substituted heteroalkylene, the optionally substituted heteroalkylene is unsubstituted or is substituted with one or more substituents independently selected from the group consisting of: (C1-C3) alkyl,

, =0 (i.e., two geminal hydrogens on a carbon atom of the heteroalkylene are replaced with the group =0), or a quaternary amine as described herein, for example, -N ⁺ (CH3)3.

[000268] In some embodiments, when Ln ⁴ is optionally substituted alkynylene, the optionally substituted alkynylene is unsubstituted.

[000269] In some embodiments, when the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁰ is replaced with an aromatic amino acid residue.

[000270] In some embodiments, the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[000271] In some embodiments, when the amino acid residue at position Z ¹¹ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹¹ is replaced with an amino acid residue selected from the group consisting of: A, F, L and W.

[000272] In some embodiments, when the amino acid residue at position Z ¹¹ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹¹ is replaced with an amino acid residue that is 2Nal substituted on the side chain naphthalene ring with one or more groups selected from: -OH, -(C1-C4) alkyl, -O(Ci-C4) alkyl, and -CN.

[000273] In some embodiments, when the amino acid residue at position Z ¹¹ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹¹ is replaced with an aromatic amino acid residue.

[000274] In some embodiments, when the amino acid residue at position Z ¹¹ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹¹ is replaced with an aliphatic amino acid residue.

[000275] In some embodiments, the amino acid residue at position Z ¹¹ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[000276] In some embodiments, when the amino acid residue at position Z ¹² is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹² is replaced with an amino acid residue selected from the group consisting of: A, Achx, Achx(diF), Acpx, Aib, AIB, aMeK, aMeL, Chg, diFCpx, F, L, Pip(NMe), Pip(NMe2), W and diFAchx.

[000277] In some embodiments, when the amino acid residue at position Z ¹² is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹² is replaced with an amino acid residue comprising at least one quaternary amine selected from the group consisting of: Pip(NMe2).

[000278] In some embodiments, when the amino acid residue at position Z ¹² is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹² is replaced with an amino acid residue that is THP substituted on the side chain with one or more groups selected from: -OH, -(C1-C4) alkyl, -O(Ci-C ₄ ) alkyl, and -CN.

[000279] In some embodiments, when the amino acid residue at position Z ¹² is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹² is replaced with an aromatic amino acid residue.

[000280] In some embodiments, when the amino acid residue at position Z ¹² is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹² is replaced with an aliphatic amino acid residue.

[000281] In some embodiments, when the amino acid residue at position Z ¹² is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹² is replaced with a polar amino acid residue.

[000282] In some embodiments, when the amino acid residue at position Z ¹² is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹² is replaced with a hydrophilic amino acid residue.

[000283] In some embodiments, when the amino acid residue at position Z ¹² is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹² is replaced with a basic amino acid residue.

[000284] In some embodiments, the amino acid residue at position Z ¹² is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[000285] In some embodiments, when the amino acid residue at position Z ¹³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with an amino acid residue selected from the group consisting of: K(NMeAC), E, A, AIB, aMeE, APEG2Ser, APEG2Ser(S*), Cit, Dab(NMeAc), Dab(NMecam), Dab(NMeCOmPEG6), Dab(NMecPEG2a), Dab(NMecPEG3a), Dap(Ac), Dap(NMeAc), E(c), E(C), F, K(5cpa), K(Ac), K(cPEG3a), K(d), K(D), K(dPEG12Ac), K(dPEG6Ac), K(dPEG9Ac), K(Me)3, K(NMeCOmPEG6), K(NMeCOPEG4N+Me3), K(NMePEG3a), K(NmPEG6Ac), K(PEG2PEG2gEC12), K(PEG2PEG2gEC14), K(PEG2PEG2PEG2gEC12), L, Q(N(Me)2), Tetrazole, Tetrazole(NMe), W, K(DFN), K(IPB) and Nle.

[000286] In some embodiments, when the amino acid residue at position Z ¹³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with an amino acid residue comprising at least one quaternary amine selected from the group consisting of: APEG2Ser, APEG2Ser(S*), Dab(NMecarn), Dab(NMecPEG2a), Dab(NMecPEG3a), K(5cpa), K(cPEG3a), E(c), E(C), K(d), K(D), K(Me)3, K(NMeCOPEG4N+Me3) and K(NMePEG3a).

[000287] In some embodiments, when the amino acid residue at position Z ¹³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with an amino acid residue that is K(NMeAc) substituted on the side chain with one or more groups selected from: -OH, -(C1-C4) alkyl, -O(Ci-C ₄ ) alkyl, and -CN.

[000288] In some embodiments, when the amino acid residue at position Z ¹³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with an aromatic amino acid residue.

[000289] In some embodiments, when the amino acid residue at position Z ¹³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with an aliphatic amino acid residue.

[000290] In some embodiments, when the amino acid residue at position Z ¹³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with a hydrophilic amino acid residue.

[000291] In some embodiments, when the amino acid residue at position Z ¹³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with an acidic amino acid residue.

[000292] In some embodiments, the amino acid residue at position Z ¹³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[000293] In some embodiments, when the amino acid residue at position Z ¹⁴ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁴ is replaced with an amino acid residue selected from the group consisting of: K(Ac) and N(NMe).

[000294] In some embodiments, when the amino acid residue at position Z ¹⁴ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁴ is replaced with an amino acid residue that is N substituted on the side chain with one or more groups selected from: -OH, - (C1-C4) alkyl, -O(Ci-C ₄ ) alkyl, and -CN.

[000295] In some embodiments, when the amino acid residue at position Z ¹⁴ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁴ is replaced with a hydrophilic amino acid residue. [000296] In some embodiments, the amino acid residue at position Z ¹⁴ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[000297] In some embodiments, when the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue selected from the group consisting of: 3pya, 5CF33Pya, 5MePyridinAla, bAla, dK, dL, F, f, H, h, k, N, NMe3Pya, NMebAla, NMeDTyr, orn, Paf, s, t, THP, v, y and A.

[000298] In some embodiments, when the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is 3Pya substituted on the side chain with one or more groups selected from: -OH, -(C1-C4) alkyl, -O(Ci-C ₄ ) alkyl, and -CN.

[000299] In some embodiments, when the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue comprising at least one quaternary amine selected from the group consisting of: NMe3Pya.

[000300] In some embodiments, when the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁵ is replaced with an aromatic amino acid residue.

[000301] In some embodiments, when the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁵ is replaced with an aliphatic amino acid residue.

[000302] In some embodiments, when the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁵ is replaced with a polar amino acid residue.

[000303] In some embodiments, when the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁵ is replaced with a hydrophilic amino acid residue. [000304] In some embodiments, when the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁵ is replaced with a basic amino acid residue.

[000305] In some embodiments, when the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁵ is replaced with a non-polar amino acid residue.

[000306] In some embodiments, the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[000307] In some embodiments, when the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue selected from the group consisting of: 4diFPro, NMeDTyr, NMeK(PEG2PEG2C12), NMeK(PEG2PEG2C14), NMeK(PEG2PEG2gEC12), NMeK(PEG2PEG2gEC14), NMeK(PEG2PEG2K(PEG2PEG2gEC12)2), NMeK(PEG2PEG2K(PEG2PEG2PEG2PEG2gEC12)2), NMeK(PEG2PEG2PEG2gEC12), NMeK(PEG2PEG2PEG2PEG2gEC12), NMeK(PEG2PEG6gEC12), NMeK(PEG2PEG6gEC14), NMeK(SP6PEG2PEG2C12) and NMeK(SP6PEG2PEG2gEC12).

[000308] In some embodiments, when the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue comprising at least one quaternary amine selected from the group consisting of: NMeK(SP6PEG2PEG2C12) and NMeK(SP6PEG2PEG2gEC12).

[000309] In some embodiments, when the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is Sar substituted on the side chain with one or more groups selected from: -OH, - (C1-C4) alkyl, -O(Ci-C ₄ ) alkyl, and -CN.

[000310] In some embodiments, when the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁶ is replaced with an aromatic amino acid residue.

[000311] In some embodiments, when the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁶ is replaced with an acidic amino acid residue.

[000312] In some embodiments, when the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁶ is replaced with a polar amino acid residue.

[000313] In some embodiments, when the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁶ is replaced with a hydrophilic amino acid residue.

[000314] In some embodiments, when the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁶ is replaced with a non-polar amino acid residue.

[000315] In some embodiments, the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

[000316] In some embodiments, the amino acid residue(s) specified at a given position are substituted on the side chain with one or more groups selected from: -OH, -(Ci- C ₄ ) alkyl, -O(Ci-C ₄ ) alkyl, and -CN.

[000317] In some embodiments, R ^NT is selected from the group consisting of: -C(O)- optionally substituted (C1-C15) alkyl and -C(O)-optionally substituted (C1-C35) heteroalkyl.

[000318] In some embodiments, R ^NT is selected from the group consisting of: -C(O)- optionally substituted (C1-C10) alkyl and -C(O)-optionally substituted (C1-C35) heteroalkyl.

[000319] In some embodiments, R ^NT is selected from the group consisting of: -C(O)- optionally substituted (Ci-Cg) alkyl and -C(O)-optionally substituted (C1-C30) heteroalkyl. [000320] In some embodiments, R ^NT is selected from the group consisting of: -C(O)- optionally substituted (Ci-Ce) alkyl and -C(O)-optionally substituted (C1-C30) heteroalkyl.

[000321] In some embodiments, R ^NT is selected from the group consisting of: (d)gEPEG2PEG2CO, 4cpgCO, 5cpaCO, AcdPEG12CO, AcdPEG6CO, AcdPEG9CO, C12gEPEG2PEG2CO, C14gEPEG2PEG2CO, CF3CO, CF3propylamide, cPEG2gCO, cPEG3aCO, cPEG3gCO, cPEG5aCO, EtCO, F3CO, MeCO, mPEG3CO, mPEG6CO, cPEG3AmCO, DFNCO, DFNPEG2PEG2CO, IPBCO and IPBPEG2PEG2CO.

[000322] In some embodiments, R ^NT is an -C(O)-optionally substituted (C1-C20) alkyl, for example, 4cpgCO, CF3CO, CF3propylamide, EtCO, F3CO, MeCO or 5cpaCO.

[000323] In some embodiments, R ^NT is an -C(O)-optionally substituted (C1-C20) alkyl that comprises a quaternary amine, for example, 5cpaCO.

[000324] In some embodiments, R ^NT is an -C(O)-optionally substituted (C1-C40) heteroalkyl, for example, AcdPEG12CO, AcdPEG6CO, AcdPEG9CO, C12gEPEG2PEG2CO, cPEG2gCO, cPEG3gCO, mPEG3CO, mPEG6CO, (d)gEPEG2PEG2CO, cPEG3aCO, and cPEG5aCO.

[000325] In some embodiments, R ^NT is an -C(O)-optionally substituted (C1-C40) heteroalkyl that comprises a quaternary amine, for example, (d)gEPEG2PEG2CO, cPEG3aCO, cPEG5aCO.

[000326] In some embodiments, R ^NT is an -C(O)-optionally substituted heteroalkyl that comprises a hydrophilic polymer, for example, polyethylene glycol (PEG).

[000327] In some embodiments, R ^NT is an -C(O)-optionally substituted heteroalkyl that comprises the formula -[O-CFFCFyn-, wherein n is an integer, for example wherein:

(i) n is an integer from about 1 to about 20;

(ii) n is an integer from about 1 to about 15;

(iii) n is an integer from about f to about 10; or

(iv) n is an integer from about 2 to about 12.

[000328] In some embodiments, when R ^NT is a -C(O)-optionally substituted heteroalkyl, the -C(O)-optionally substituted heteroalkyl is unsubstituted or is substituted with one or more substituents independently selected from the group consisting of: -OH, -NH2, -CO2H, -CO2CH3, -NH(C=NH)NH2, =0 (i.e., two geminal hydrogens on a carbon atom of the heteroalkyl are replaced with the group

, or a quaternary amine as described herein, for example, -N ⁺ (CH3)3.

[000329] In some embodiments, when R ^NT is a -C(O)-optionally substituted alkyl, the -C(O)-optionally substituted alkyl is unsubstituted or is substituted with one or more substituents independently selected from the group consisting of: Fluoro, - quaternary amine as described herein, for example, -N ⁺ (CH3)3.

[000330] In some embodiments:

(i) each R ^Y and R ^z is independently selected from the group consisting of: hydrogen, optionally substituted (Ci-Cio) alkyl and optionally substituted (C1-C25) heteroalkyl, or

(ii) R ^Y and R ^z come together with the N atom to which they are attached to form an optionally substituted (C5-7) heterocyclic ring or an optionally substituted (C7-C9) bicyclic heterocyclic ring.

[000331] In some embodiments :

(i) each R ^Y and R ^z is independently selected from the group consisting of: hydrogen, optionally substituted (Ci-Cg) alkyl and optionally substituted (C1-C20) heteroalkyl, or

(ii) R ^Y and R ^z come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclic ring or an optionally substituted (Cs) bicyclic heterocyclic ring.

[000332] In some embodiments, R ^CT is selected from the group consisting of: CONH2, CO(DiFPip), CO(Morph), CO(mPEG8), CO(NHPEG3a), CO(OAZBO), CO(TFMOHPip), C0N(Me)2, CON(MePEG2), C0N(mPEG2), CON(NMePip), CONH(PEG3a), CONH(PEG5a), CONHMe and CONMe2.

[000333] In some embodiments, R ^CT is selected from the group consisting of: optionally substituted aminyl, optionally substituted piperidinyl, optionally substituted piperazinyl, optionally substituted morpholinyl and optionally substituted 3-oxa-8- azabicyclo[3.2.1]octanyl.

[000334] In some embodiments, R ^CT is N(R ^Y )(R ^Z ), wherein R ^Y is hydrogen and R ^z is an optionally substituted (C1-C30) heteroalkyl that comprises a quaternary amine, for example, CO(NHPEG3a), CONH(PEG3a) or CONH(PEG5a).

[000335] In some embodiments, when R ^Y and/or R ^z is an optionally substituted alkyl, each optionally substituted alkyl is independently unsubstituted or is substituted with one or more substituents independently selected from the group consisting of: a quaternary amine as described herein, for example, -N ⁺ (CH3)3.

[000336] In some embodiments, when R ^Y and/or R ^z is an optionally substituted heteroalkyl, each optionally substituted heteroalkyl is independently unsubstituted or is substituted with one or more substituents independently selected from the group consisting of: a quaternary amine as described herein, for example, -N ⁺ (CH3)3.

[000337] In some embodiments, when R ^Y and R ^z come together with the N atom to which they are attached to form an optionally substituted heterocyclic ring, for example, optionally substituted aminyl, optionally substituted piperidinyl, optionally substituted piperazinyl and optionally substituted morpholinyl, the optionally substituted heterocyclic ring is unsubstituted or is substituted with one or more substituents independently selected from the group consisting of: Fluoro, -OH, - CF3, (C1-C3) alkyl, or a quaternary amine as described herein, for example, - N ⁺ (CH ₃ )3.

[000338] In some embodiments, when R ^Y and R ^z come together with the N atom to which they are attached to form an optionally substituted bicyclic heterocyclic ring, for example, optionally substituted 3-oxa-8-azabicyclo[3.2.1]octanyl, the optionally substituted bicyclic heterocyclic ring is unsubstituted or is substituted with one or more substituents independently selected from the group consisting of: Fluoro, -OH, - CF3, (C1-C3) alkyl, or a quaternary amine as described herein, for example, - N ⁺ (CH ₃ )3.

[000339] In some embodiments, the cyclic peptide further comprises one or more natural or unnatural polymer(s) or a combination(s) thereof.

[000340] In some embodiments, the cyclic peptide further comprises a natural or unnatural polymer or a combination thereof.

[000341] In some embodiments, the cyclic peptide further comprises one or more natural or unnatural polymer or a combination thereof that is conjugated to R ^NT , when present, and/or R ^CT , when present, and/or the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position.

[000342] In some embodiments, the cyclic peptide further comprises a natural or unnatural polymer or a combination thereof that is conjugated to R ^NT , when present, or R ^CT , when present, or the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ or Z ¹⁶ , when an amino acid residue is present at the position.

[000343] The properties of the natural or unnatural polymer or a combination thereof can be optimized by modifying the length, conformation (e.g., branched or linear), and/or functionalization (e.g., adding a negatively charged group) of the natural or unnatural polymer or a combination thereof. For example, the natural or unnatural polymer or a combination thereof can be modified to increase solubility, avoid aggregation, and the like of the cyclic peptides of the present invention. For example, the natural or unnatural polymer or a combination thereof can be modified to increase the solubility and avoid aggregation of the cyclic peptides of the present invention by including hydrophilic or water-soluble polymers, including but not limited to PEG, charged PEG molecules, amino acids, or combinations thereof.

[000344] In an embodiment, the natural or unnatural polymer or a combination thereof is water-soluble, e.g., so that the cyclic peptides of the present invention do not precipitate out in an aqueous (e.g., physiological) environment. Further, the natural or unnatural polymer or a combination thereof is biocompatible, e.g., does not cause injury, toxicity or an immunological reaction in vivo.

[000345] A non-limiting example of a natural polymeric group is an amino acid sequence containing from about 10 to about 30 amino acids derived from (poly)peptides such as, natriuretic peptide precursor C, atrial natriuretic peptide, brain natriuretic peptide, serum albumin, IgG, histidine-rich glycoproteins, fibronectin, fibrinogen, zinc finger-containing polypeptides, osteocrin or fibroblast growth factor 2 (FGF2), or variants thereof with substitutions and/or deletions. A non-limiting example of an unnatural polymeric group (e.g. a synthetic polymer) is polyethylene glycol (PEG, also called polyethylene oxide (PEG)).

[000346] In an embodiment, the natural polymer or unnatural polymer comprises residues selected from amino acids or carbohydrates or combinations, thereof. In an embodiment, the natural or unnatural polymer or a combination thereof comprises an amino acid sequence. In an embodiment, the natural or unnatural polymer or a combination thereof comprises about 10 to about 30 amino acid residues. In an embodiment, the natural or unnatural polymer or a combination thereof comprises about 10 to about 25 amino acid residues. In an embodiment, the natural or unnatural polymer or a combination thereof comprises about 15 to about 20 amino acid residues.

[000347] In an embodiment, the natural or unnatural polymer or a combination thereof is a combination of a natural polymer and an unnatural polymer, for example a combination of an amino acid sequence and a hydrophilic polymer, such as polyethylene glycol (PEG).

[000348] In an embodiment, the natural or unnatural polymer or a combination thereof comprises optionally substituted heteroalkylene. In an embodiment, the natural or unnatural polymer or a combination thereof is optionally substituted heteroalkylene. In an embodiment, the natural or unnatural polymer or a combination thereof comprises optionally substituted (C10-C200) heteroalkylene. In an embodiment, the natural or unnatural polymer or a combination thereof is optionally substituted (C10- C200) heteroalkylene. In an embodiment, the natural or unnatural polymer or a combination thereof comprises optionally substituted (C10-C150) heteroalkylene. In an embodiment, the natural or unnatural polymer or a combination thereof is optionally substituted (C10-C150) heteroalkylene. In an embodiment, the natural or unnatural polymer or a combination thereof comprises optionally substituted (C10-C100) heteroalkylene. In an embodiment, the natural or unnatural polymer or a combination thereof is optionally substituted (C10-C100) heteroalkylene. In an embodiment, the natural or unnatural polymer or a combination thereof comprises optionally substituted (C10-C90) heteroalkylene. In an embodiment, the natural or unnatural polymer or a combination thereof is optionally substituted (C10-C90) heteroalkylene. In an embodiment, the natural or unnatural polymer or a combination thereof comprises optionally substituted (Cio-Cso) heteroalkylene. In an embodiment, the natural or unnatural polymer or a combination thereof is optionally substituted (C10- Cso) heteroalkylene. In an embodiment, the natural or unnatural polymer or a combination thereof comprises optionally substituted (C10-C70) heteroalkylene. In an embodiment, the natural or unnatural polymer or a combination thereof is optionally substituted (C10-C70) heteroalkylene. In an embodiment, the natural or unnatural polymer or a combination thereof comprises optionally substituted (Cio-Ceo) heteroalkylene. In an embodiment, the natural or unnatural polymer or a combination thereof is optionally substituted (Cio-Ceo) heteroalkylene. In an embodiment, the natural or unnatural polymer or a combination thereof comprises about 1 to about 7 heteroatoms, independently selected from the group consisting of N, 0, S, and P, for every 10 carbons in the optionally substituted heteroalkylene. In an embodiment, the natural or unnatural polymer or a combination thereof comprises about 1 to about 5 heteroatoms, independently selected from the group consisting of N, 0, S, and P, for every 10 carbons in the optionally substituted heteroalkylene. In an embodiment, the heteroatoms are independently selected from the group consisting of N, 0 or S. In an embodiment, the heteroatoms are independently selected from the group consisting of N or 0.

[000349] In an embodiment, the natural or unnatural polymer or a combination thereof is a combination of naturally occurring monomer units and synthetic monomer units, for example a combination of amino acid monomer units and PEG monomer units.

[000350] In an embodiment, the natural or unnatural polymer or a combination thereof comprises a hydrophilic polymer. In an embodiment, the natural or unnatural polymer or a combination thereof is a hydrophilic polymer. In an embodiment, the hydrophilic polymer can be branched or unbranched. In an embodiment, the hydrophilic polymer is not branched. The present invention contemplates the use of hydrophilic or water soluble polymers (e.g., PEG) that can vary in type (e.g., homopolymer or copolymer; random, alternating or block copolymer; linear or branched), linkage (e.g., hydrolysable or stable linkage such as, e.g., amide, imine, aminal, alkylene, or ester bond), and length (e.g., from about 0.2, 0.4 or 0.6 kDa to about 2, 3, 4 or 5 kDa, such as about 0.2 kDa to about 5 kDa). Non-limiting examples of hydrophilic polymers that can be used in the present invention include polymers formed from carboxylic acid-bearing monomers (e.g., methacrylic acid (MA) and acrylic acid (AA)), polyvinyl alcohols, polymers formed from hydroxyl-bearing monomers (e.g., hydroxy ethyl methacrylate (HEM A), hydroxypropyl methacrylate (HPMA), hydroxypropyl methacrylamide, and 3 -trimethylsilylpropyl methacrylate (TMSPMA)), polyalkylene oxides, polyoxyethylated polyols (e.g., glycerol), polyethylene glycol) (PEG), polypropylene glycol), mono-Ci-Cio alkoxy-PEGs (e.g., monomethoxy-PEG), tresyl monomethoxy-PEG, aryloxy-PEGs, PEG acrylate (PEGA), PEG methacrylate, PEG propionaldehyde, bis-succinimidyl carbonate PEG, copolymers of 2-methacryloyloxyethyl-phosphorylcholine (MPC) and N-vinyl pyrrolidone (VP), hydroxy functional poly(N-vinyl pyrrolidone) (PVP), SIS-PEG (SIS is polystyrene-polyisobutylene-polystyrene block copolymer), polystyrene-PEG, polyisobutylene-PEG, PCL-PEG (PCL is polycaprolactone), PLA-PEG (PLA is polylactic acid), PMMA-PEG (PMMA is poly(methyl methacrylate)), PDMS-PEG (PDMS is polydimethyloxanone), PVDF-PEG (PVDF is polyvinylidene fluoride), PLURONIC™ surfactants (polypropylene oxide-co-poly ethylene glycol), poly(tetramethylene glycol), poly(L-lysine-g-ethylene glycol) (PLL-g-PEG), poly(L- lysine-g-hyaluronic acid) (PLL-gHA), poly(L-lysine-g-phosphoryl choline) (PLL-g- PC), poly(L-lysine-g-vinyl pyrrolidone) (PLL-g-PVP), poly(ethylimine-g-ethylene glycol) (PEI-g-PEG), poly(ethylimine-g-hyaluronic acid) (PEI-g-HA), poly(ethylimine-g-phosphoryl choline) (PEI-g-PC), poly(ethylimine-g- vinyl pyrrolidone) (PEI-g-PVP), PLL-co-HA, PLL-co-PC, PLL-co-PVP, PEI-co-PEG, PEI- co-HA, PEI-co-PC, PEI-co-PVP, cellulose and derivatives thereof (e.g., hydroxyethyl cellulose), dextran, dextrins, hyaluronic acid and derivatives thereof (e.g., sodium hyaluronate), elastin, chitosan, acrylic sulfate, acrylic sulfonate, acrylic sulfamate, methacrylic sulfate, methacrylic sulfonate, methacrylic sulfamate, polymers and copolymers thereof, and polymers and copolymers of combinations thereof.

[000351] In an embodiment, the natural or unnatural polymer or a combination thereof comprises one or more aromatic compound(s), such as dihydroxybenzoic acid (e.g. 3,5-dihydroxybenzoic acid), biphenol (e.g. 4,4’ -biphenol) or 4-hydroxybenzyl alcohol, wherein each of the one or more aromatic compound(s) connect(s) two hydrophilic polymers, such as PEG.

[000352] In an embodiment, the hydrophilic polymer comprises polyethylene glycol (PEG). In an embodiment, the hydrophilic polymer is PEG. In an embodiment, the hydrophilic polymer comprises PEG18. In an embodiment, the hydrophilic polymer is PEG18. In an embodiment, the hydrophilic polymer comprises PEG21. In an embodiment, the hydrophilic polymer is PEG21. In general, a “PEGn” polymer associated with the number n, comprises the formula: -[O-CPECtyn-, where n is the number of ethylene oxide units. In an embodiment, the natural or unnatural polymer or a combination thereof comprises the formula: -[O-CH2CH2]n-, wherein n is an integer. In an embodiment, n is an integer from about 6 to about 100. In an embodiment, n is an integer from about 6 to about 100, and the PEG polymer is from about 0.3 kDa to about 5 kDa. In another embodiment, n is an integer from about 12 to about 50. In another embodiment, n is an integer from about 12 to about 50, and the PEG polymer is from about 0.6 kDa to about 2.5 kDa. In yet another embodiment, n is an integer from about 12 to about 24. In yet another embodiment, n is an integer from about 12 to about 24, and the PEG polymer is from about 0.6 kDa to about 1.2 kDa.

[000353] In an embodiment, the natural or unnatural polymer or a combination thereof is at least about 0.4, 0.6, 0.8, 1, 1.2, 1.4, 1.6 or 1.8 kDa, or up to about 2, 2.2, 2.4, 2.6, 2.8, 3, 3.2, 3.4, 3.6, 3.8, 4, 4.2, 4.4, 4.6, 4.8 or 5 kDa. In an additional embodiment, the natural or unnatural polymer or a combination thereof is in the range from about 0.4 kDa to about 2.5 kDa or from about 0.6 kDa to about 1.5 kDa. In an embodiment, the natural or unnatural polymer or a combination thereof is at least about 0.2 kDa. In an embodiment, the natural or unnatural polymer or a combination thereof is at least about 0.4 kDa. In an embodiment, the natural or unnatural polymer or a combination thereof is at least about 0.6 kDa. In an embodiment, the natural or unnatural polymer or a combination thereof is less than about 2 kDa. In an embodiment, the natural or unnatural polymer or a combination thereof is less than about 3 kDa. In an embodiment, the natural or unnatural polymer or a combination thereof is less than about 4 kDa. In an embodiment, the natural or unnatural polymer or a combination thereof is less than about 5 kDa. In an embodiment, the natural or unnatural polymer or a combination thereof is about 0.2 kDa to about 5 kDa. In an embodiment, the natural or unnatural polymer or a combination thereof is about 0.4 kDa to about 5 kDa. In an embodiment, the natural or unnatural polymer or a combination thereof is about 0.6 kDa to about 5 kDa. In an embodiment, the natural or unnatural polymer or a combination thereof is about 0.2 kDa to about 2 kDa. In an embodiment, the natural or unnatural polymer or a combination thereof is about 0.2 kDa to about 3 kDa. In an embodiment, the natural or unnatural polymer or a combination thereof is about 0.2 kDa to about 4 kDa. In an embodiment, the natural or unnatural polymer or a combination thereof is about 0.4 kDa to about 2 kDa. In an embodiment, the natural or unnatural polymer or a combination thereof is about 0.4 kDa to about 3 kDa. In an embodiment, the natural or unnatural polymer or a combination thereof is about 0.4 kDa to about 4 kDa. In an embodiment, the natural or unnatural polymer or a combination thereof is about 0.6 kDa to about 2 kDa. In an embodiment, the natural or unnatural polymer or a combination thereof is about 0.6 kDa to about 3 kDa. In an embodiment, the natural or unnatural polymer or a combination thereof is about 0.6 kDa to about 4 kDa. In an embodiment, the size of the natural or unnatural polymer or a combination thereof in kDa can be determined using mass spectrometry. In an embodiment, the size of the natural or unnatural polymer or a combination thereof in kDa is determined using mass spectrometry.

[000354] In an embodiment, the natural or unnatural polymer or a combination thereof (for example, a hydrophilic or water-soluble polymer (e.g., PEG)) is functionalized with one or more functional groups that impart a negative charge to the natural or unnatural polymer or a combination thereof under physiological conditions, such as, e.g, carboxyl, sulfate or phosphate groups, or a combination thereof. In an embodiment, the natural or unnatural polymer or a combination thereof (for example, a hydrophilic or water-soluble polymer (e.g., PEG)) is functionalized with one or more functional groups that impart a positive charge to the polymer under physiological conditions, such as, an amine, or a tertiary amine.

[000355] In an embodiment, the natural or unnatural polymer or a combination thereof comprises one or more cleavable groups, such as disulfide, ester and/or carbonate.

[000356] In some embodiments, the cyclic peptide is an inhibitor of an interleukin-23 (IL-23) receptor.

[000357] In some embodiments, the cyclic peptide inhibits the binding of an interleukin- 23 (IL-23) to an IL-23 receptor.

[000358] In some embodiments, the cyclic peptide inhibits an interleukin-23 (IL-23) receptor to reduce or prevent the activation of the Jak-Stat signaling molecules, Jak2, Tyk2, Statl, Stat 3, Stat 4, and/or Stat 5.

[000359] In some embodiments, the cyclic peptide inhibits an interleukin-23 (IL-23) receptor to reduce or prevent the phosphorylation of Stat 3.

[000360] In some embodiments, the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a reporter assay with an IC50 value less than about 6.3 pM. In some embodiments, the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a reporter assay with an IC50 value less than about 2 pM. In some embodiments, the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a reporter assay with an IC50 value less than about 1 pM. In some embodiments, the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a reporter assay with an IC50 value less than about 0.5 pM. In some embodiments, the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a reporter assay with an IC50 value less than about 0.25 pM. In some embodiments, the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a reporter assay with an IC50 value less than about 0.1 pM. In some embodiments, the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a reporter assay with an IC50 value less than about 0.05 pM. In some embodiments, the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a reporter assay with an IC50 value less than about 0.025 pM. In some embodiments, the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a reporter assay with an IC50 value less than about 0.01 pM. In some embodiments, the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in an IL-23 reporter assay with an IC50 value less than about 0.005 pM. In some embodiments, the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a reporter assay with an IC50 value less than about 0.0025 pM.

[000361] In some embodiments, the IL-23 reporter assay is as described in the description In some embodiments, the cyclic peptide inhibits an interleukin-23 (IL- 23) receptor in a peripheral blood mononuclear cell (PBMC) pSTAT3 assay with an IC50 value less than about 0.05 nM. In some embodiments, the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a peripheral blood mononuclear cell (PBMC) pSTAT3 assay with an IC50 value less than about 0.04 nM. In some embodiments, the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a peripheral blood mononuclear cell (PBMC) pSTAT3 assay with an IC50 value less than about 0.03 nM. In some embodiments, the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a peripheral blood mononuclear cell (PBMC) pSTAT3 assay with an IC50 value less than about 0.02 nM In some embodiments, the cyclic peptide inhibits an interleukin- 23 (IL-23) receptor in a peripheral blood mononuclear cell (PBMC) pSTAT3 assay with an IC50 value less than about 0.01 nM. In some embodiments, the peripheral blood mononuclear cell (PBMC) pSTAT3 assay is as described in the description.

[000362] In some embodiments, the cyclic peptide exhibits an Exposed Polar Surface Area (EPSA) of less than about 275 A ² in an EPSA assay. In some embodiments, the cyclic peptide exhibits an Exposed Polar Surface Area (EPSA) of less than about 250 A ² in an EPSA assay. In some embodiments, the cyclic peptide exhibits an Exposed Polar Surface Area (EPSA) of less than about 225 A ² in an EPSA assay. In some embodiments, the cyclic peptide exhibits an Exposed Polar Surface Area (EPSA) of less than about 200 A ² in an EPSA assay. In some embodiments, the cyclic peptide exhibits an Exposed Polar Surface JaneArea (EPSA) of less than about 175 A ² in an EPSA assay. In some embodiments, the cyclic peptide exhibits an Exposed Polar Surface Area (EPSA) of less than about 150 A ² in an EPSA assay. In some embodiments, the cyclic peptide exhibits an Exposed Polar Surface Area (EPSA) of less than about 145 A ² in an EPSA assay. In some embodiments, the cyclic peptide exhibits an Exposed Polar Surface Area (EPSA) of less than about 140 A ² in an EPSA assay. In some embodiments, the Exposed Polar Surface Area (EPSA) assay is as described in the description.

[000363] In another general aspect, the invention relates to a compound or compounds selected from any one of the tables 1A, IB, 1C, ID, IE and IF or pharmaceutically acceptable salts thereof or solvates thereof. In some embodiments, the cyclic peptide has the following structure or pharmaceutically acceptable salts thereof or solvates thereof:

[000364] In another general aspect, the invention relates to a pharmaceutical composition comprising the cyclic peptide or pharmaceutically acceptable salt thereof or solvate thereof as described herein, and a pharmaceutically acceptable carrier, excipient, or diluent.

[000365] In some embodiments, the pharmaceutical composition further comprises an enteric coating.

[000366] In some embodiments, the enteric coating protects and releases the pharmaceutical composition within a subject’s lower gastrointestinal system.

[000367] In another general aspect, the invention relates to a method for treating an Inflammatory Bowel Disease (IBD), ulcerative colitis, Crohn’s disease, Celiac disease (nontropical Sprue), enteropathy associated with seronegative arthropathies, microscopic colitis, collagenous colitis, eosinophilic gastroenteritis, colitis associated with radio- or chemo-therapy, colitis associated with disorders of innate immunity as in leukocyte adhesion deficiency- 1, chronic granulomatous disease, glycogen storage disease type lb, Hermansky-Pudlak syndrome, Chediak-Higashi syndrome, and Wiskott-Aldrich Syndrome, pouchitis resulting after proctocolectomy and ileoanal anastomosis, gastrointestinal cancer, pancreatitis, insulin-dependent diabetes mellitus, mastitis, cholecystitis, cholangitis, pericholangitis, chronic bronchitis, chronic sinusitis, asthma, psoriasis, psoriatic arthritis, or graft versus host disease in a subject, comprising providing to the subject an effective amount of the cyclic peptide or pharmaceutically acceptable salt thereof or solvate thereof as described herein, or the pharmaceutical composition as described herein.

[000368] In some embodiments of the method described herein, the cyclic peptide or pharmaceutically acceptable salt thereof or solvate thereof or the pharmaceutical composition is provided to the subject by an oral, parenteral, intravenous, peritoneal, intradermal, subcutaneous, intramuscular, intrathecal, inhalation, vaporization, nebulization, sublingual, buccal, parenteral, rectal, intraocular, inhalation, topically, vaginal, or topical route of administration.

[000369] In some embodiments of the method described herein for treating Inflammatory Bowel Disease (IBD), ulcerative colitis, or Crohn’s disease, the cyclic peptide or pharmaceutically acceptable salt thereof or solvate thereof or the pharmaceutical composition is provided to the subject orally.

[000370] In some embodiments of the method described herein for treating psoriasis, the cyclic peptide or pharmaceutically acceptable salt thereof or solvate thereof or the pharmaceutical composition is provided to the subject orally, topically, parenterally, intravenously, subcutaneously, peritonealy, or intravenously.

[000371] In some embodiments, the cyclic peptide described herein, or the pharmaceutical composition described herein for use in the treatment of an Inflammatory Bowel Disease (IBD), ulcerative colitis, Crohn’s disease, Celiac disease (noniropical Sprue), enteropathy associated with seronegative arthropathies, microscopic colitis, collagenous colitis, eosinophilic gastroenteritis, colitis associated with radio- or chemo-therapy, colitis associated with disorders of innate immunity as in leukocyte adhesion deficiency- 1, chronic granulomatous disease, glycogen storage disease type lb, Hermansky-Pudlak syndrome, Chediak-Higashi syndrome, and Wiskott-Aldrich Syndrome, pouchitis resulting after proctocolectomy and ileoanal anastomosis, gastrointestinal cancer, pancreatitis, insulin-dependent diabetes mellitus, mastitis, cholecystitis, cholangitis, pericholangitis, chronic bronchitis, chronic sinusitis, asthma, psoriasis, psoriatic arthritis, or graft versus host disease in a subject, comprising providing to the subject an effective amount of the cyclic peptide or pharmaceutically acceptable salt thereof or solvate thereof as described herein, or the pharmaceutical composition as described herein.

[000372] In some embodiments, the cyclic peptide or pharmaceutically acceptable salt thereof or solvate thereof or the pharmaceutical composition is provided to the subject by an oral, parenteral, intravenous, peritoneal, intradermal, subcutaneous, intramuscular, intrathecal, inhalation, vaporization, nebulization, sublingual, buccal, parenteral, rectal, intraocular, inhalation, topically, vaginal, or topical route of administration.

[000373] In some embodiments, when the cyclic peptide for use or the pharmaceutical composition for use as described herein is used in the treatment of Inflammatory Bowel Disease (IBD), ulcerative colitis, or Crohn’s disease, the cyclic peptide or pharmaceutically acceptable salt thereof or solvate thereof or the pharmaceutical composition is provided to the subject orally.

[000374] In some embodiments, when the cyclic peptide or the pharmaceutical composition for use as described herein is used in the treatment of psoriasis, the cyclic peptide or pharmaceutically acceptable salt thereof or solvate thereof or the pharmaceutical composition is provided to the subject orally, topically, parenterally, intravenously, subcutaneously, peritonealy, or intravenously.

[000375] In some embodiments, the cyclic peptide, or the pharmaceutical composition as described herein is for use as a medicament.

[000376] In some embodiments, the use of the cyclic peptide or the pharmaceutical composition as described herein is for the manufacture of a medicament for treating a disease.

[000377] In some embodiments, the use of the cyclic peptide or the pharmaceutical composition as described herein is for the manufacture of a medicament for treating a disease disclosed herein.

PARTICULAR CYCLIC PEPTIDES OF THE PRESENT INVENTION

[000378] In particular, the present invention relates to a cyclic peptide, or a pharmaceutically acceptable salt or solvate thereof, comprising an amino acid sequence of Formula (A):

Z ³ -Z ⁴ -Z ⁵ -Z ⁶ -Z ⁷ -Z ⁸ -Z ⁹ -Z ¹⁰ -Z ⁿ -Z ¹² -Z ¹³ -Z ¹⁴ -Z ¹⁵ -Z ¹⁶ (A), wherein: the amino acid residue at position Z ³ is absent or the residue of r; the amino acid residue at position Z ⁴ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁹ ; the amino acid residue at position Z ⁵ is the residue of N(N(Me)2); the amino acid residue at position Z ⁶ is the residue of T; the amino acid residue at position Z ⁷ is the residue of 7MeW; the amino acid residue at position Z ⁸ is the residue of K(NMeAc); the amino acid residue at position Z ⁹ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁴ ; the amino acid residue at position Z ¹⁰ is the residue of TMAPF; the amino acid residue at position Z ¹¹ is the residue of 2Nal; the amino acid residue at position Z ¹² is absent or the residue of THP; the amino acid residue at position Z ¹³ is the residue of K(NMeAc); the amino acid residue at position Z ¹⁴ is the residue of N; the amino acid residue at position Z ¹⁵ is absent or the residue of 3Pya; the amino acid residue at position Z ¹⁶ is absent or the residue of Sar; eight or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position; wherein when the amino acid residue at position Z ³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ³ is replaced with an amino acid residue selected from the group consisting of: APEG2ser, APEG2Ser, APEG2Ser(S*), e(c), e(C), hk(Me)3, k(5cpa), k(cPEG3a), k(d), k(D), k(dPEG12Ac), k(dPEG6Ac), k(dPEG9Ac), k(Me)3, K(Me)3, k(PEG2PEG2gEC12), k(PEG2PEG2gEC14), k(PEG2PEG2PEG2PEG2gEC12), k(PEG2PEG6gEC12), SP6, APEG2Ser(RS), gPEG2Ser and k(PEG2PEG2gE(c)C12; wherein when the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁵ is replaced with an amino acid residue selected from the group consisting of: A, APEG2Ser(S*), Dab(Me)3, F, Gab, K(cPEG3a), K(Me)3, K(PEG2PEG2gEC12), K(PEG2PEG2gEC14), L, N, N(N(Me)), N(NMe), Q and W; wherein when the amino acid residue at position Z ⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁶ is replaced with an amino acid residue selected from the group consisting of: A and L; wherein when the amino acid residue at position Z ⁷ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁷ is replaced with an amino acid residue selected from the group consisting of: W, 7(3NAcPh)W, 7CF3W, NMe7MeW, 2Nal, A, F and L; wherein when the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁸ is replaced with an amino acid residue selected from the group consisting of: K(NMeAC), Q, 4AmPhe, A, AIB, APEG2Ser, APEG2Ser(R*), APEG2Ser(S*), Cit, Dab(NMeAc), Dab(NMecarn), Dab(NMeCarn), Dab(NMeC0mPEG6), Dab(NMecPEG2a), Dab(NMecPEG3a), Dab(NMecPEG5a), Dap(NMeAc), F, K(4cpg), K(Ac), K(cPEG3a), K(Me)3, K(NMeC0mPEG6), K(NMePEG3a), K(NmPEG6Ac), K(PEG2PEG2gEC12), K(PEG2PEG2gEC14), L, Paf(Ac), Q(N(Me)2), Q(NHtBu), W, Y and K(cPEG3aC0); wherein when the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue selected from the group consisting of: AEF, 4DMPEF, 4DMPzEF, 4TMABYF, ACHMF, AEF((Ch)cPEG3a), AEF(Ac), AEF(AcCh), AEF(aPEG2a), AEF(BisMEP), AEF(BisMEPa), AEF(BisPEG2a)(RS), AEF(BisPEG2a)(S*),

AEF(G), AEF(Me)2, AEF(MEP), AEF(MePrpa), AEF(N(Me)2), AEF(NHCh), AEF(NHcPEG3a), AEF(NMe), AEF(NMe2mPEG3), AEF(NMe3), AEF(NMeBismPEG3), AEF(NMePEG2a), AEF(NmPEG6), AEF(NsCh), AEF(PEG2a), AEF(SPD), APEG2F, APEG3F, dFPPEG3F, Diazabiclyclooctane6F, DMMMF, DMPMF, DMTASF, F(4G), F(4N3), F(4TzlDMA4mPEG), F(4TzlMME), F(4TzlMMol), F(4TzlMMo3), F(4TzlMMo4), F(4TzlTMAl), F(4TzlTMA2), F(4TzlTMA3), F(4TzlTMA4), F(4TzlTMA5), GPEG3F, hFTMAPF, MMoEF, MMoPF, MMPEG3F, morfTMA4F, mPEG2TMA2F, mPEG2TMA4F, mPEG3TMA4F, MPzPEG3F, MTASF, NPyEF, NPyPEG3F, PiperazinequatF, TBAPEG3F, TMA3F, TMA4F, TMA6F, TMA8F, Tzl(Ch), TzlChmPEG, TzlChmPEG3, Y(C90H), Y(OEOXIMECh), Y(OTzlCh), Y(OTzlChC16), Y(OTzlChC8), Y(OTzlClaC8), Y(OTzlChmPEG), Y(OTzlChmPEG3), Y(OTzlPEG3a), Y(OTzlPEG4a), Y(0TzlTMA4), Y(OZOXIMECh), YC8CO(NHPEG3a), YC8COPip, YCF2H, ACHMF(R*, S*), ACHMF(S*, S*), AEF(cPEG3a), APF, F(4TzlAme2), F(4TzlG2), F(4TzlMMo7) and F(4TzlTMA7); wherein when the amino acid residue at position Z ¹¹ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹¹ is replaced with an amino acid residue selected from the group consisting of: A, F, L and W; wherein when the amino acid residue at position Z ¹² is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹² is replaced with an amino acid residue selected from the group consisting of: A, Achx, Achx(diF), Acpx, Aib, AIB, aMeK, aMeL, Chg, diFCpx, F, L, Pip(NMe), Pip(NMe2), W and diFAchx; wherein when the amino acid residue at position Z ¹³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with an amino acid residue selected from the group consisting of: K(NMeAC), E, A, AIB, aMeE, APEG2Ser, APEG2Ser(S*), Cit, Dab(NMeAc), Dab(NMecam), Dab(NMeC0mPEG6), Dab(NMecPEG2a), Dab(NMecPEG3a), Dap(Ac), Dap(NMeAc), E(c), E(C), F, K(5cpa), K(Ac), K(cPEG3a), K(d), K(D), K(dPEG12Ac), K(dPEG6Ac), K(dPEG9Ac), K(Me)3, K(NMeC0mPEG6), K(NMeCOPEG4N+Me3), K(NMePEG3a), K(NmPEG6Ac), K(PEG2PEG2gEC12), K(PEG2PEG2gEC14), K(PEG2PEG2PEG2gEC12), L, Q(N(Me)2), Tetrazole, Tetrazole(NMe), W, K(DFN), K(IPB) and Nle; wherein when the amino acid residue at position Z ¹⁴ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁴ is replaced with an amino acid residue selected from the group consisting of: K(Ac) and N(NMe); wherein when the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue selected from the group consisting of: 3pya, 5CF33Pya, 5MePyridinAla, bAla, dK, dL, F, f, H, h, k, N, NMe3Pya, NMebAla, NMeDTyr, orn, Paf, s, t, THP, v, y and A; wherein when the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue selected from the group consisting of: 4diFPro, NMeDTyr, NMeK(PEG2PEG2C12), NMeK(PEG2PEG2C14), NMeK(PEG2PEG2gEC12), NMeK(PEG2PEG2gEC14), NMeK(PEG2PEG2K(PEG2PEG2gEC12)2), NMeK(PEG2PEG2K(PEG2PEG2PEG2PEG2gEC12)2), NMeK(PEG2PEG2PEG2gEC12), NMeK(PEG2PEG2PEG2PEG2gEC 12) , NMeK(PEG2PEG6gEC 12), NMeK(PEG2PEG6gEC14), NMeK(SP6PEG2PEG2C12) and NMeK(SP6PEG2PEG2gEC12); and at least one of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) at least one quaternary amine. [000379] In particular, the present invention relates to a cyclic peptide, or a pharmaceutically acceptable salt or solvate thereof, comprising an amino acid sequence of Formula (B):

Z ³ -Z ⁴ -Z ⁵ -Z ⁶ -Z ⁷ -Z ⁸ -Z ⁹ -Z ¹⁰ -Z ⁿ -Z ¹² -Z ¹³ -Z ¹⁴ -Z ¹⁵ -Z ¹⁶ (B), wherein: the amino acid residue at position Z ³ is absent or the residue of r; the amino acid residue at position Z ⁴ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁹ ; the amino acid residue at position Z ⁵ is the residue of N(N(Me)2); the amino acid residue at position Z ⁶ is the residue of T; the amino acid residue at position Z ⁷ is the residue of 7MeW; the amino acid residue at position Z ⁸ is the residue of K(NMeAc); the amino acid residue at position Z ⁹ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁴ ; the amino acid residue at position Z ¹⁰ is the residue of TMAPF; the amino acid residue at position Z ¹¹ is the residue of 2Nal; the amino acid residue at position Z ¹² is absent or the residue of THP; the amino acid residue at position Z ¹³ is the residue of K(NMeAc); the amino acid residue at position Z ¹⁴ is the residue of N; the amino acid residue at position Z ¹⁵ is absent or the residue of 3Pya; the amino acid residue at position Z ¹⁶ is absent or the residue of Sar; eight or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position; wherein when the amino acid residue at position Z ³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ³ is replaced with an amino acid residue selected from the group consisting of: APEG2ser, APEG2Ser, APEG2Ser(S*), e(c), e(C), hk(Me)3, k(5cpa), k(cPEG3a), k(d), k(D), k(dPEG12Ac), k(dPEG6Ac), k(dPEG9Ac), k(Me)3, K(Me)3, k(PEG2PEG2gEC12), k(PEG2PEG2gEC14), k(PEG2PEG2PEG2PEG2gEC12), k(PEG2PEG6gEC12), SP6, APEG2Ser(RS), gPEG2Ser and k(PEG2PEG2gE(c)C12; wherein when the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁵ is replaced with an amino acid residue selected from the group consisting of: A, APEG2Ser(S*), Dab(Me)3, F, Gab, K(cPEG3a), K(Me)3, K(PEG2PEG2gEC12), K(PEG2PEG2gEC14), L, N, N(N(Me)), N(NMe), Q and W; wherein when the amino acid residue at position Z ⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁶ is replaced with an amino acid residue selected from the group consisting of: A and L; wherein when the amino acid residue at position Z ⁷ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁷ is replaced with an amino acid residue selected from the group consisting of: W, 7(3NAcPh)W, 7CF3W, NMe7MeW, 2Nal, A, F and L; wherein when the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁸ is replaced with an amino acid residue selected from the group consisting of: K(NMeAC), Q, 4AmPhe, A, AIB, APEG2Ser, APEG2Ser(R*), APEG2Ser(S*), Cit, Dab(NMeAc), Dab(NMecarn), Dab(NMeCarn), Dab(NMeC0mPEG6), Dab(NMecPEG2a), Dab(NMecPEG3a), Dab(NMecPEG5a), Dap(NMeAc), F, K(4cpg), K(Ac), K(cPEG3a), K(Me)3, K(NMeC0mPEG6), K(NMePEG3a), K(NmPEG6Ac), K(PEG2PEG2gEC12), K(PEG2PEG2gEC14), E, Paf(Ac), Q(N(Me)2), Q(NHtBu), W, Y and K(cPEG3aCO); wherein when the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue selected from the group consisting of: AEF, 4DMPEF, 4DMPzEF, 4TMABYF, ACHMF, AEF((Ch)cPEG3a), AEF(Ac), AEF(AcCh), AEF(aPEG2a), AEF(BisMEP), AEF(BisMEPa), AEF(BisPEG2a)(RS), AEF(BisPEG2a)(S*), AEF(G), AEF(Me)2, AEF(MEP), AEF(MePrpa), AEF(N(Me)2), AEF(NHCh), AEF(NHcPEG3a), AEF(NMe), AEF(NMe2mPEG3), AEF(NMe3), AEF(NMeBismPEG3), AEF(NMePEG2a), AEF(NmPEG6), AEF(NsCh), AEF(PEG2a), AEF(SPD), APEG2F, APEG3F, dFPPEG3F, Diazabiclyclooctane6F, DMMMF, DMPMF, DMTASF, F(4G), F(4N3), F(4TzlDMA4mPEG), F(4TzlMME), F(4TzlMMol), F(4TzlMMo3), F(4TzlMMo4), F(4TzlTMAl), F(4TzlTMA2), F(4TzlTMA3), F(4TzlTMA4), F(4TzlTMA5), GPEG3F, hFTMAPF, MMoEF, MMoPF, MMPEG3F, morfTMA4F, mPEG2TMA2F, mPEG2TMA4F, mPEG3TMA4F, MPzPEG3F, MTASF, NPyEF, NPyPEG3F, PiperazinequatF, TBAPEG3F, TMA3F, TMA4F, TMA6F, TMA8F, Tzl(Ch), TzlChmPEG, TzlChmPEG3, Y(C9OH), Y(OEOXIMECh), Y(OTzlCh), Y(OTzlChC16), Y(OTzlChC8), Y(OTzlClaC8), Y(OTzlChmPEG), Y(OTzlChmPEG3), Y(OTzlPEG3a), Y(OTzlPEG4a), Y(OTzlTMA4), Y(OZOXIMECh), YC8CO(NHPEG3a), YC8COPip, YCF2H, ACHMF(R*, S*), ACHMF(S*, S*), AEF(cPEG3a), APF, F(4TzlAme2), F(4TzlG2), F(4TzlMMo7) and F(4TzlTMA7); wherein when the amino acid residue at position Z ¹¹ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹¹ is replaced with an amino acid residue selected from the group consisting of: A, F, L and W; wherein when the amino acid residue at position Z ¹² is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹² is replaced with an amino acid residue selected from the group consisting of: A, Achx, Achx(diF), Acpx, Aib, AIB, aMeK, aMeL, Chg, diFCpx, F, L, Pip(NMe), Pip(NMe2), W and diFAchx; wherein when the amino acid residue at position Z ¹³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with an amino acid residue selected from the group consisting of: K(NMeAC), E, A, AIB, aMeE, APEG2Ser, APEG2Ser(S*), Cit, Dab(NMeAc), Dab(NMecam), Dab(NMeC0mPEG6), Dab(NMecPEG2a), Dab(NMecPEG3a), Dap(Ac), Dap(NMeAc), E(c), E(C), F, K(5cpa), K(Ac), K(cPEG3a), K(d), K(D), K(dPEG12Ac), K(dPEG6Ac), K(dPEG9Ac), K(Me)3, K(NMeC0mPEG6), K(NMeCOPEG4N+Me3), K(NMePEG3a), K(NmPEG6Ac), K(PEG2PEG2gEC12), K(PEG2PEG2gEC14), K(PEG2PEG2PEG2gEC12), L, Q(N(Me)2), Tetrazole, Tetrazole(NMe), W, K(DFN), K(IPB) and Nle; wherein when the amino acid residue at position Z ¹⁴ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁴ is replaced with an amino acid residue selected from the group consisting of: K(Ac) and N(NMe); wherein when the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue selected from the group consisting of: 3pya, 5CF33Pya, 5MePyridinAla, bAla, dK, dL, F, f, H, h, k, N, NMe3Pya, NMebAla, NMeDTyr, orn, Paf, s, t, THP, v, y and A; wherein when the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue selected from the group consisting of: 4diFPro, NMeDTyr, NMeK(PEG2PEG2C12), NMeK(PEG2PEG2C14), NMeK(PEG2PEG2gEC12), NMeK(PEG2PEG2gEC14), NMeK(PEG2PEG2K(PEG2PEG2gEC12)2), NMeK(PEG2PEG2K(PEG2PEG2PEG2PEG2gEC12)2), NMeK(PEG2PEG2PEG2gEC12), NMeK(PEG2PEG2PEG2PEG2gEC12), NMeK(PEG2PEG6gEC12), NMeK(PEG2PEG6gEC14), NMeK(SP6PEG2PEG2C12) and NMeK(SP6PEG2PEG2gEC12); and at least one of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) at least one masked amine and/or masked amide.

IL DEFINITIONS

[000380] Unless otherwise defined herein, scientific and technical terms used in this application shall have the meanings that are commonly understood by those of ordinary skill in the art.

[000381] “About” when referring to a value includes the stated value +/- 10% of the stated value. For example, about 50% includes a range of from 45% to 55%, while about 20 molar equivalents includes a range of from 18 to 22 molar equivalents. Accordingly, when referring to a range, “about” refers to each of the stated values +/- 10% of the stated value of each end of the range. For instance, a ratio of from about 1 to about 3 (weight/weight) includes a range of from 0.9 to 3.3.

[000382] “Patient” or “subject”, which are used interchangably, refer to a living organism, which includes, but is not limited to a human subject suffering from or prone to a disease or condition that can be treated by administration of a pharmaceutical composition as provided herein. Further non- limiting examples may include, but is not limited to humans, other mammals, bovines, rats, mice, dogs, monkeys, goat, sheep, cows, deer, horse, and other mammalian animals and the like. In some aspects, the patient is human. [000383] Unless indicated otherwise the names of naturally occurring and non-naturally occurring aminoacyl residues used herein follow the naming conventions suggested by the IUPAC Commission on the Nomenclature of Organic Chemistry and the IUPAC-IUB Commission on Biochemical Nomenclature as set out in “Nomenclature of a- Amino Acids (Recommendations, 1974)” Biochemistry, 14(2), (1975). To the extent that the names and abbreviations of amino acids and aminoacyl residues employed in this specification and appended claims differ from those suggestions, they will be made clear to the reader. In sequences of amino acids that represent IL-23 inhibitors the individual amino acids are separated by a hyphen or brackets e.g, lysine is shown as [K].

[000384] Throughout the present specification, unless naturally occurring amino acids are referred to by their full name (e.g., alanine, arginine, etc.), they are designated by their conventional three-letter or single-letter abbreviations (e.g., Ala or A for alanine, Arg or R for arginine, etc.). Unless otherwise indicated, three-letter and single-letter abbreviations of amino acids refer to the L-isomeric form of the amino acid in question. The term “L-amino acid,” as used herein, refers to the “L” isomeric form of a peptide, and conversely the term “D-amino acid” refers to the “D” isomeric form of a peptide (e.g., (D)Asp or D-Asp; (D)Phe or D-Phe). Amino acid residues in the D isomeric form can be substituted for any L-amino acid residue, as long as the desired function is retained by the peptide. D-amino acids may be indicated as customary in lower case when referred to using single-letter abbreviations. For example, L-arginine can be represented as “Arg” or “R,” while D-arginine can be represented as “arg” or “r.” Similarly, L-lysine can be represented as “Lys” or “K,” while D-lysine can be represented as “lys” or “k.” Alternatively, a lower case “d” in front of an amino acid can be used to indicate that it is of the D isomeric form, for example D-lysine can be represented by dK.

[000385] In the case of less common or non-naturally occurring amino acids, unless they are referred to by their full name (e.g. sarcosine, ornithine, etc.), frequently employed three- or four-character codes are employed for residues thereof, including, Sar or Sarc (sarcosine, i.e. N-methylglycine), Aib (a-aminoisobutyric acid), Dab (2,4-diaminobutanoic acid), Dapa (2,3-diaminopropanoic acid), y-Glu (y-glutamic acid), Gaba (y- aminobutanoic acid), 0-Pro (pyrrolidine-3-carboxylic acid), and Abu (2-amino butyric acid).

[000386] Amino acids of the D-isomeric form may be located at any of the positions in the IL-23R inhibitors set forth herein (any of X1-X18 appearing in the molecule). In an aspect, amino acids of the D-isomeric form may be located only at any one or more of X3, X5, X6, X8, X13, and optionally one additional position. In other aspects, amino acids of the D-isomeric form may be located only at any one or more of X3, X8, XI 3, and optionally one additional position. In other aspects, amino acids of the D-isomeric form may be located only at any one or more of X8, X13 (e.g., X8 is dK(Ac) and X13 is dE), and optionally one additional position. In other aspects, amino acids of the D-isomeric form may be located only at X3, and optionally one additional position. In other aspects, amino acids of the D-isomeric form may be located only at X3, and optionally two or three additional positions. In other aspects, amino acids of the D-isomeric form may be located at only one or two of positions XI to XI 8 appearing in the IL-23R inhibitors set forth herein. In other aspects, amino acids of the D-isomeric form may be located at only three or four of positions XI to XI 8 appearing in the IL-23R inhibitors set forth herein. For example an IL-23R inhibitors set forth herein having only positions X3 to X15 present may have amino acids of the D-form present in 3 or four of those positions. In other aspects, amino acids of the D-isomeric form may be located at only five or six of positions XI to XI 8 appearing in the IL-23R inhibitors set forth herein.

[000387] As is clear to the skilled artisan, the peptide sequences disclosed herein are shown proceeding from left to right, with the left end of the sequence being the N-terminus of the peptide and the right end of the sequence being the C-terminus of the peptide. Among sequences disclosed herein are sequences incorporating either an “-OH” moiety or an “-NH2” moiety at the carboxy terminus (C-terminus) of the sequence. In such cases, and unless otherwise indicated, an “-OH” or an “-NH2” moiety at the C-terminus of the sequence indicates a hydroxy group or an amino group, corresponding to the presence of a carboxylic acid (COOH) or an amido (CONH2) group at the C-terminus, respectively. In each sequence of the invention, a C-terminal “-OH” moiety may be substituted for a C-terminal “-NH2” moiety, and vice-versa

[000388] As used herein, the term “amino acid,” in its broadest sense, refers to any compound and/or substance that can be incorporated into a polypeptide chain. In some embodiments, an amino acid has the general structure H2N-C(H)(R)-C00H. In some embodiments, an amino acid is a naturally occurring amino acid. In some embodiments, an amino acid is a synthetic amino acid; in some embodiments, an amino acid is a D-amino acid; in some embodiments, an amino acid is an L-amino acid. “Standard amino acid” refers to any of the twenty standard L-amino acids commonly found in naturally occurring peptides. “Nonstandard amino acid” refers to any amino acid, other than the standard amino acids, regardless of whether it is prepared synthetically or obtained from a natural source. As used herein, “synthetic amino acid” encompasses chemically modified amino acids, including but not limited to salts, amino acid derivatives (such as amides), and/or substitutions. Amino acids, including carboxy- and/or amino-terminal amino acids in peptides, can be modified by methylation, amidation, acetylation, protecting groups, and/or substitution with other chemical groups that can change the peptide’s circulating half-life without adversely affecting their activity. Amino acids may participate in forming a bridge for cyclization such as a thio ether bond and a disulfide bond for forming a cyclic portion of a peptide, for example as in the connection between the amino acid residue at position Z4 and amino acid residue at position Z9 in various embodiments discussed herein. Amino acids may comprise one or more post-translational modifications, such as association with one or more chemical entities (e.g., methyl groups, acetate groups, acetyl groups, phosphate groups, formyl moieties, isoprenoid groups, sulfate groups, polyethylene glycol moieties, lipid moieties, carbohydrate moieties, biotin moieties, etc.). The term “amino acid” is used interchangeably with “amino acid residue,” and may refer to a free amino acid and/or to an amino acid residue of a peptide. It will be apparent from the context in which the term is used whether it refers to a free amino acid or a residue of a peptide.

[000389] As used herein, “Hydrophilic Amino Acid or Residue” refers to an amino acid or residue having a side chain exhibiting a hydrophobicity of less than zero according to the normalized consensus hydrophobicity scale of Eisenberg et al., 1984, J. Mol. Biol. 179:125- 142. Examples of hydrophilic amino acids include but are not limited to L-Thr (T), L-Ser (S), L-His (H), L-Glu (E), L-Asn (N), L-Gln (Q), L-Asp (D), L-Lys (K) and L-Arg (R).

[000390] As used herein, “Acidic Amino Acid or Residue” refers to a hydrophilic amino acid or residue having a side chain exhibiting a pK value of less than about 6 when the amino acid is included in a peptide or polypeptide. Acidic amino acids typically have negatively charged side chains at physiological pH due to loss of a hydrogen ion. Examples of acidic amino acids include but are not limited to L-Glu (E) and L-Asp (D)

[000391] As used herein, “Basic Amino Acid or Residue” refers to a hydrophilic amino acid or residue having a side chain exhibiting a pK value of greater than about 6 when the amino acid is included in a peptide or polypeptide. Basic amino acids typically have positively charged side chains at physiological pH due to association with hydronium ion. Examples of basic amino acids include but are not limited to L-Arg (R) and L-Lys (K) [000392] As used herein, “Polar Amino Acid or Residue” refers to a hydrophilic amino acid or residue having a side chain that is uncharged at physiological pH, but which has at least one bond in which the pair of electrons shared in common by two atoms is held more closely by one of the atoms. Examples of polar amino acids include but are not limited to L- Asn (N), L-Gln (Q), L-Ser (S) and L-Thr (T).

[000393] As used herein, “Hydrophobic Amino Acid or Residue” refers to an amino acid or residue having a side chain exhibiting a hydrophobicity of greater than zero according to the normalized consensus hydrophobicity scale of Eisenberg et al., 1984, J. Mol. Biol.

179:125-142. Examples of hydrophobic amino acids include but are not limited to L-Pro (P), L-Ile (I), L-Phe (F), L-Val (V), L-Leu (L), L-Trp (W), L-Met (M), L-Ala (A) and L-Tyr (Y).

[000394] As used herein, “Aromatic Amino Acid or Residue” refers to a hydrophilic or hydrophobic amino acid or residue having a side chain that includes at least one aromatic or heteroaromatic ring. Examples of aromatic amino acids include but are not limited to L-Phe (F), L-Tyr (Y), L-His (H), 2-Nal, substituted 2-Nal, AEF, substituted AEF, L-Trp (W), Trp or substituted Trp. Although owing to the pKa of its heteroaromatic nitrogen atom L-His (H) it is sometimes classified as a basic residue, herein histidine is classified as an aromatic residue as its side chain includes a heteroaromatic ring.

[000395] As used herein, “Non-polar Amino Acid or Residue” refers to a hydrophobic amino acid or residue having a side chain that is uncharged at physiological pH and which has bonds in which the pair of electrons shared in common by two atoms is generally held equally by each of the two atoms (i.e., the side chain is not polar). Examples of non-polar amino acids include but are not limited to L-Gly (G), L-Leu (L), L-Val (V), L-Ile (I), L-Met (M), L-Pro (P) and L-Ala (A).

[000396] As used herein, “Aliphatic Amino Acid or Residue” refers to a hydrophobic amino acid or residue having an aliphatic hydrocarbon side chain. Examples of aliphatic amino acids include but are not limited to L-Ala (A), L-Val (V), L-Leu (L) and L-Ile (I).

[000397] The amino acid L-Cys (C) is unusual in that it can form disulfide bridges with other L-Cys (C) amino acids or other sulfanyl- or sulfhydryl-containing amino acids. As used herein, “cysteine-like amino acids or residues” includes cysteine and other amino acids that contain sulfhydryl moieties that are available for formation of disulfide bridges. The ability of L-Cys (C) (and other amino acids with SH containing side chains) to exist in a peptide in either the reduced free SH or oxidized disulfide-bridged form affects whether L- Cys (C) contributes net hydrophobic or hydrophilic character to a peptide. While L-Cys (C) exhibits a hydrophobicity of 0.29 according to the normalized consensus scale of Eisenberg (Eisenberg et al., 1984, supra), it is to be understood that for purposes of the present disclosure L-Cys (C) is categorized into its own unique group. Examples of “cysteine-like amino acids or residues” include but are not limited to (R)-2-amino-3-mercapto-3- methylbutanoic acid (Pen) and L-homocysteine (hC).

[000398] The term “quaternary amine” takes its ordinary meaning in the art. For example, a quaternary amine is a substituent comprising one or more nitrogen atom(s) that is/are permanently positively chaged. The permanent positive charge of the nitrogen atom(s) may be independent of the surrounding pH. One non-limiting example of a quaternary amine can be a moiety having four organic substituents on a nitrogen atom.

[000399] The term “masked amine” means a substituent comprising one or more nitrogen atom(s), wherein the one or more nitrogen atom(s) is/are substituted. For example, the one or more nitrogen atom(s) may be substituted with groups such as alkyl or acetyl, to form secondary amine(s), tertiary amine(s) or amides. In embodiments, a masked amine is a secondary amine. In embodiments, a masked amine is a tertiary amine. In embodiments, a masked amine is an amide.

[000400] The term “masked amide” means a substituent comprising one or more nitrogen atom(s), wherein the one or more nitrogen atom(s) is/are substituted with -C=O, and at least one other substituent. For example, the one or more nitrogen atom(s) substituted with -C=O may be further substituted with groups such as alkyl or acetyl, to form secondary amide(s) or tertiary amides. In embodiments, a masked amide is a secondary amide. In some embodiments, a masked amide is a tertiary amide.

[000401] One of skill in the art will appreciate that certain amino acids and other chemical moieties are modified when bound to another molecule. For example, an amino acid side chain may be modified when it forms an intramolecular bridge with another amino acid side chain, e.g., one or more hydrogen may be removed or replaced by the bond.

[000402] A “compound of the invention” , an “inhibitor of the present disclosure”, an “IE-23R inhibitor of the present disclosure”, a “compound described herein”, and a “herein- described compound” include the novel compounds disclosed herein, for example the compounds of any of the Examples, including compounds of Formula (I) to (VI) such as those found in Table 1A, Table IB, Table 1C, Table ID, or Table IE. [000403] “Pharmaceutically effective amount” refers to an amount of a compound of the invention in a composition or combination thereof that provides the desired therapeutic or pharmaceutical result.

[000404] By “pharmaceutically acceptable” it is meant the carrier(s), diluent(s), salts, or excipient(s) must be compatible with the other components or ingredients of the compositions of the present invention, i.e., that which is useful, safe, non-toxic acceptable for pharmaceutical use. In accordance with the present invention pharmaceutically acceptable means approved or approvable as is listed in the U.S. Pharmacopoeia or other generally recognized pharmacopoeia for use in animals, and more particularly, in humans.

[000405] “Pharmaceutically acceptable excipient” includes without limitation any adjuvant, carrier, excipient, glidant, sweetening agent, diluent, preservative, dye/colorant, flavor enhancer, surfactant, wetting agent, dispersing agent, suspending agent, stabilizer, isotonic agent, solvent, or emulsifier which has been approved by the United States Food and Drug Administration as being acceptable for use in humans or domestic animals.

[000406] “Absorption enhancer” refers to a component that improves or facilitates the mucosal absorption of a drug in the gastrointestinal tract, such as a permeation enhancer or intestinal permeation enhancer. As conventionally understood in the art, permeation enhancers (PEs) are agents aimed to improve oral delivery of therapeutic drugs with poor bioavailability. PEs are capable of increasing the paracellular and/or transcellular passage of drugs.

[000407] Pharmaceutical excipients that can increase permeation have been termed “absorption modifying excipients” (AMEs). AMEs may be used in oral compositions, for example, as wetting agents (sodium dodecyl sulfate), antioxidants (e.g. EDTA), and emulsifiers (e.g. macrogol glycerides), and may be specifically included in compositions as PEs to improve bioavailability. PEs can be categorized as to how they alter barrier integrity via paracellular or transcellular routes.

[000408] “Intestinal permeation enhancer (IPE)” refers to a component that improves the bioavailability of a component. Suitable representative IPEs for use in the present invention, include, but are not limited to, various surfactants, fatty acids, medium chain glycerides, steroidal detergents, acyl carnitine and alkanoylcholines, A-acetylated alphaamino acids and A-acelylated non-alpha-amino acids, and chitosans, other mucoadhesive polymers and the like. For example, a suitable IPE for use in the present invention may be sodium caprate.

[000409] “Composition” or “Pharmaceutical Composition” as used herein is intended to encompass an invention or product comprising the specified active product ingredient (API), which may include pharmaceutically acceptable excipients, carriers or diluents as described herein, such as in specified amounts defined throughout the disclosure.

Compositions or Pharmaceutical Compositions result from combination of specific components, such as specified ingredients in the specified amounts as described herein.

[000410] Compositions or pharmaceutical compositions of the present invention may be in different pharmaceutically acceptable forms, which may include, but are not limited to a liquid composition, a tablet or matrix composition, a capsule composition, etc. and the like. When the composition is a tablet composition, the tablet may include, but is not limited to different layers two or more different phases, including an internal phase and an external phase that can comprise a core. The tablet composition can also include, but is not limited to, one or more coatings.

[000411] “Solvate” as used herein, means a physical association of the compound of the present invention with one or more solvent molecules. This physical association involves varying degrees bonding, including hydrogen bonding. In certain instances, the solvate will be capable of isolation. The term "solvate" is intended to encompass both solution-phase and isolatable solvates. Non-limiting examples of suitable solvates include hydrates.

[000412] Provided are also pharmaceutically acceptable salts and tautomeric forms of the compounds described herein. “Pharmaceutically acceptable” or “physiologically acceptable” refer to compounds, salts, compositions, dosage forms and other materials which are useful in preparing a pharmaceutical composition that is suitable for veterinary or human pharmaceutical use.

[000413] The IL-23R inhibitors of the present disclosure, or their pharmaceutically acceptable salts or solvates may contain one or more asymmetric centers and may thus give rise to enantiomers, diastereomers, and other stereoisomeric forms that may be defined, in terms of absolute stereochemistry, as (R)- or (5)- or, as (D)- or (L)- for amino acids. The present disclosure is meant to include all such possible isomers, as well as their racemic and optically pure forms of the IL-23R inhibitors of the present disclosure. Optically active (+) and (-), (/?)- and (S)-, or (D)- and (L)- isomers may be prepared using chiral synthons or chiral reagents, or resolved using conventional techniques, for example, chromatography and fractional crystallization. Conventional techniques for the preparation/isolation of individual enantiomers include chiral synthesis from a suitable optically pure precursor or resolution of the racemate (or the racemate of a salt or derivative) using, for example, chiral high pressure liquid chromatography (HPLC). When the compounds described herein contain olefinic double bonds or other centers of geometric asymmetry, and unless specified otherwise, it is intended that the compounds include both E and Z geometric isomers. Likewise, all tautomeric forms are also intended to be included. Where compounds are represented in their chiral form, it is understood that the aspect encompasses, but is not limited to, the specific diastereomerically or enantiomerically enriched form. Where chirality is not specified but is present, it is understood that the aspect is directed to either the specific diastereomerically or enantiomerically enriched form; or a racemic or scalemic mixture of such compound(s). As used herein, “scalemic mixture” is a mixture of stereoisomers enantiomers at a ratio other than 1:1.

[000414] Certain examples contain amino acids that are depicted or labelled as an (R*) or (S*). When (R*) or (S*) is used in the name of an amino acid or in the chemical representation of the amino acid, it is intended to convey that the amino acid is a pure single isomer at that stereocenter; however, absolute configuration of that stereocenter has not been established. Thus, a compound designated as (R*) refers to an amino acid that is a pure single isomer at that stereocenter with an absolute configuration of either (R) or (S), and a compound designated as (S*) refers to an amino acid that is a pure single isomer at that stereocenter with an absolute configuration of either (R) or (S). For example, ACHMF(S*): , refers to an amino acid that is either:

[000415] “Racemates” refers to a mixture of enantiomers. The mixture can include equal or unequal amounts of each enantiomer.

[000416] “Stereoisomer” and “stereoisomers” refer to compounds that differ in the chirality of one or more stereo centers. Stereoisomers include enantiomers and diastereomers. The compounds may exist in stereoisomeric form if they possess one or more asymmetric centers or a double bond with asymmetric substitution and, therefore, can be produced as individual stereoisomers or as mixtures. Unless otherwise indicated, the description is intended to include individual stereoisomers as well as mixtures. The methods for the determination of stereochemistry and the separation of stereoisomers are well-known in the art (see, e.g., Chapter 4 of Advanced Organic Chemistry, 4th ed., J. March, John Wiley and Sons, New York, 1992).

[000417] “Tautomer” refers to alternate forms of a compound that differ in the position of a proton, such as enol-keto and imine-enamine tautomers, or the tautomeric forms of heteroaryl groups containing a ring atom attached to both a ring -NH- and a ring =N- such as pyrazoles, imidazoles, benzimidazoles, triazoles, and tetrazoles.

[000418] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly or conventionally understood by one of ordinary skill in the art. In the chemical arts a dash at the front or end of a chemical group is a matter of convenience; chemical groups may be depicted with or without one or more dashes without losing their ordinary meaning. A wavy line drawn through a line in a structure indicates a point of attachment of a group. A dashed line indicates an optional bond. Unless chemically or structurally required, no directionality is indicated or implied by the order in which a chemical group is written or the point at which it is attached to the remainder of the molecule. For instance, the group “-SO2CH2-” is equivalent to “-CH2SO2-” and both may be connected in either direction. Similarly, an “arylalkyl” group, for example, may be attached to the remainder of the molecule at either an aryl or an alkyl portion of the group. A prefix such as “C _u -v” or (Cu-Cv) indicates that the following group has from u to v carbon atoms. For example, “Ci-6alkyl” and “Ci-Ce alkyl” both indicate that the alkyl group has from 1 to 6 carbon atoms.

[000419] “Treatment” or “treat” or “treating” as used herein refers to an approach for obtaining beneficial or desired results. For purposes of the present invention, beneficial or desired results include, but are not limited to, alleviation of a symptom and/or diminishment of the extent of a symptom and/or preventing a worsening of a symptom associated with a disease or condition. In one aspect, “treatment” or “treating” includes one or more of the following: (a) inhibiting the disease or condition (e.g., decreasing one or more symptoms resulting from the disease or condition, and/or diminishing the extent of the disease or condition); (b) slowing or arresting the development of one or more symptoms associated with the disease or condition (e.g., stabilizing the disease or condition, delaying the worsening or progression of the disease or condition); and (c) relieving the disease or condition, e.g., causing the regression of clinical symptoms, ameliorating the disease state, delaying the progression of the disease, increasing the quality of life, and/or prolonging survival.

[000420] “Therapeutically effective amount” or “effective amount” as used herein refers to an amount that is effective to elicit the desired biological or medical response, including the amount of a compound that, when administered to a subject for treating a disease is sufficient to effect such treatment for the disease. The effective amount will vary depending on the compound, the disease, and its severity and the age, weight, etc., of the subject to be treated. The effective amount can include a range of amounts. As is understood in the art, an effective amount may be in one or more doses, i.e., a single dose or multiple doses may be required to achieve the desired treatment endpoint. An effective amount may be considered in the context of administering one or more therapeutic agents, and a single agent may be considered to be given in an effective amount if, in conjunction with one or more other agents, a desirable or beneficial result may be or is achieved. Suitable doses of any coadministered compounds may optionally be lowered due to the combined action (e.g., additive or synergistic effects) of the compounds. [000421] “Co- administration” as used herein refers to administration of unit dosages of the compounds disclosed herein before or after administration of unit dosages of one or more additional therapeutic agents, for example, administration of the compound disclosed herein within seconds, minutes, or hours of the administration of one or more additional therapeutic agents. For example, in some aspects, a unit dose of a compound of the invention is administered first, followed within seconds or minutes by administration of a unit dose of one or more additional therapeutic agents. Alternatively, in other aspects, a unit dose of one or more additional therapeutic agents is administered first, followed by administration of a unit dose of a compound of the invention within seconds or minutes. In some aspects, a unit dose of a compound of the invention is administered first, followed, after a period of hours (e.g., 1- 12 hours), by administration of a unit dose of one or more additional therapeutic agents. In other aspects, a unit dose of one or more additional therapeutic agents is administered first, followed, after a period of hours (e.g., 1-12 hours), by administration of a unit dose of a compound of the invention. Co-administration of a compound disclosed herein with one or more additional therapeutic agents generally refers to simultaneous or sequential administration of a compound disclosed herein and one or more additional therapeutic agents, such that therapeutically effective amounts of each agent are present in the body of the patient.

[000422] Abbreviation, “(V/V)” refers to the phrase “volume for volume”, i.e., the proportion of a particular substance within a mixture, as measured by volume or a volume amount of a component of the composition disclosed herein relative to the total volume amount of the composition. Accordingly, the quantity is unit less and represents a volume percentage amount of a component relative to the total volume of the composition. For example, a 2% (V/V) solvent mixture can indicate 2 mL of one solvent is present in 100 mL of the solvent mixture.

[000423] Abbreviation, “(w/w)” refers to the phrase “weight for weight”, i.e., the proportion of a particular substance within a mixture, as measured by weight or mass or a weight amount of a component of the composition disclosed herein relative to the total weight amount of the composition. Accordingly, the quantity is unit less and represents a weight percentage amount of a component relative to the total weight of the composition. For example, a 2% (w/w) solution can indicate 2 grams of solute is dissolved in 100 grams of solution. [000424] Systemic routes of administration as conventionally understood in the medicinal or pharmaceutical arts, refer to or are defined as a route of administration of drug, a pharmaceutical composition or formulation, or other substance into the circulatory system so that various body tissues and organs are exposed to the drug, formulation or other substance. As conventionally understood in the art, administration can take place orally (where drug or oral preparations are taken by mouth, and absorbed via the gastrointestinal tract), via enteral administration (absorption of the drug also occurs through the gastrointestinal tract) or parenteral administration (generally injection, infusion, or implantation, etc.

[000425] “Systemically active” peptide drug therapy as it relates to the present invention generally refers to treatment by means of a pharmaceutical composition comprising a peptide active ingredient, wherein said peptide resists immediate metabolism and/or excretion resulting in its exposure in various body tissues and organs, such as the cardiovascular, respiratory, gastrointestinal, nervous or immune systems.

[000426] Systemic drug activity in the present invention also refers to treatment using substances that travel through the bloodstream, reaching and affecting cells in various body tissues and organs. Systemic active drugs are transported to their site of action and work throughout the body to attack the physiological processes that cause inflammatory diseases.

[000427] “Bioavailability” refers to the extent and rate at which the active moiety (drug or metabolite) enters systemic circulation, thereby accessing the site of action. Bioavailability of a drug is impacted by the properties of the dosage form, which depend partly on its design and manufacture.

[000428] “Digestive tract tissue” as used herein refers to all the tissues that comprise the organs of the alimentary canal. For example only, and without limitation, “digestive tract tissue” includes tissues of the mouth, esophagus, stomach, small intestine, large intestine, duodenum, and anus.

[000429] As used herein, the term “natural polymer” takes its ordinary meaning in the art. For example, a polymer that can be found in living systems, such as plants, animals, bacteria, and fungi. A natural polymer may be a polypeptide, polysaccharide or polynucleotide. Subunits of natural polymers can be amino acids, monosaccharides or nucleotides. A natural polymer can vary in type (e.g., homopolymer or copolymer; random, alternating or block copolymer; linear or branched). A non- limiting example of a natural polymeric group is an amino acid sequence containing from about 10 to about 30 amino acids derived from (poly)peptides such as, natriuretic peptide precursor C, atrial natriuretic peptide, brain natriuretic peptide, serum albumin, IgG, histidine-rich glycoproteins, fibronectin, fibrinogen, zinc finger-containing polypeptides, osteocrin or fibroblast growth factor 2 (FGF2), or variants thereof with substitutions and/or deletions.

[000430] As used herein, the term “unnatural polymer” takes its ordinary meaning in the art. For example, a synthetic polymer that does not naturally occur in a living system, such as plants, animals, bacteria, and fungi. An unnatural polymer can vary in type (e.g., homopolymer or copolymer; random, alternating or block copolymer; linear or branched). A non-limiting example of an unnatural polymeric group is polyethylene glycol (PEG) (also called polyethylene oxide (PEG)).

[000431] As used herein, “hydrophilic polymer” takes its ordinary meaning in the art. For example, a polymer which dissolves in water. A hydrophilic polymer may comprise polar or charged functional groups that render the polymer soluble in water. A hydrophilic polymer may be a natural polymer or an unnatural polymer or a combination thereof. A hydrophilic polymer can vary in type (e.g., homopolymer or copolymer; random, alternating or block copolymer; linear or branched). A non-limiting example of a hydrophilic polymer includes polyethylene glycol (PEG).

Chemical definitions

[000432] Acyl: As used herein, the term “acyl” refers to R ^Z -(C=O)-, wherein R ^z is, for example, any alkyl, alkenyl, alkynyl, heteroalkyl or heteroalkenyl.

[000433] Aliphatic: As used herein, the term aliphatic in the context of chemical substituents refers to a hydrocarbon and includes both saturated and unsaturated hydrocarbons. An aliphatic may be linear, branched, or cyclic. For example, Ci-Cio aliphatics can include Ci-Cio alkyls (e.g., linear or branched Ci-Cio saturated alkyls), C2-C10 alkenyls (e.g., linear or branched C4-C10 dienyls, linear or branched Ce-Cio trienyls, and the like), and C2-C10 alkynyls (e.g., linear or branched C2-C10 alkynyls). C1-C10 aliphatics can include C3-C10 cyclic aliphatics (e.g., C3-C10 cycloalkyls, C4-C10 cycloalkenyls, or Cs-Cio cycloalkynyls). In certain embodiments, the aliphatic may comprise one or more cyclic aliphatic and/or one or more heteroatoms such as oxygen, nitrogen, or sulfur and may optionally be substituted with one or more substituents such as alkyl, halo, alkoxyl, hydroxy, amino, aryl, ether, ester or amide. An aliphatic group is unsubstituted or substituted with one or more substituent groups as described herein. For example, an aliphatic may be substituted with one or more (e.g., 1, 2, 3, 4, 5, or 6 independently selected substituents) of halogen, - COR”, -CO ₂ H, -CONH ₂ , -CO ₂ R”, -CN, -OH, -OR”, -OCOR”, -OCO ₂ R”, -NH ₂ , -NHR”, - N(R”) ₂ , -SR” or-SO ₂ R”, wherein each instance of R” independently is Ci-Cio aliphatic e.g., Ci-Cio alkyl, Ci-Cs alkyl, Ci-Ce alkyl, or C1-C3 alkyl). In embodiments, R” independently is an unsubstituted alkyl e.g., unsubstituted C1-C10 alkyl, Ci-Cs alkyl, Ci-Ce alkyl, or C1-C3 alkyl). In embodiments, R” independently is unsubstituted C1-C3 alkyl. In embodiments, the aliphatic is unsubstituted. In embodiments, the aliphatic does not include any heteroatoms.

[000434] Alkyl: As used herein, the term “alkyl” refers to a radical of an acyclic linear and branched hydrocarbon groups, e.g. “Ci-Ce alkyl” refers to alkyl groups having 1-6 carbons. An alkyl group may be linear or branched. Examples of alkyl groups include, but are not limited to, methyl, ethyl, n-propyl, isopropyl, butyl, isobutyl, sec -butyl, tert-butyl, pentyl, isopentyl tert-pentylhexyl, isohexyl, etc. The term “lower alkyl" means an alkyl group straight chain or branched alkyl having 1 to 6 carbon atoms. Other alkyl groups will be readily apparent to those of skill in the art given the benefit of the present disclosure. An alkyl group may be unsubstituted or substituted with one or more substituent groups as described herein. For example, an alkyl group may be substituted with one or more (e.g., 1, 2, 3, 4, 5, or 6 independently selected substituents) of halogen, -COR”, -CO ₂ H, -CONH ₂ , - CO ₂ R”, -CN, -OH, -OR”, -OCOR”, -OCO ₂ R”, -NH ₂ , -NHR”, -N(R”) ₂ , -SR” or-SO ₂ R”, wherein each instance of R” independently is C1-C10 aliphatic (e.g., C1-C10 alkyl, Ci-Cs alkyl, Ci-Ce alkyl, or C1-C3 alkyl). In embodiments, R” independently is an unsubstituted alkyl (e.g., unsubstituted C1-C10 alkyl, Ci-Cs alkyl, Ci-Ce alkyl, or C1-C3 alkyl). In embodiments, R” independently is unsubstituted C1-C3 alkyl. In embodiments, the alkyl is substituted (e.g., with 1, 2, 3, 4, 5, or 6 substituent groups as described herein). In embodiments, an alkyl group is substituted with a -OH group and may also be referred to herein as a “hydroxyalkyl” group, where the prefix denotes the -OH group and “alkyl” is as described herein.

[000435] For example, “alkyl” refers to a radical of a straight-chain or branched saturated hydrocarbon group having from 1 to 10 carbon atoms (“C1-C10 alkyl”). In some embodiments, an alkyl group has 1 to 9 carbon atoms (“C1-C9 alkyl”). In some embodiments, an alkyl group has 1 to 8 carbon atoms (“Ci-Cs alkyl”). In some embodiments, an alkyl group has 1 to 7 carbon atoms (“C1-C7 alkyl”). In some embodiments, an alkyl group has 1 to 6 carbon atoms (“Ci-Ce alkyl”). In some embodiments, an alkyl group has 1 to 5 carbon atoms (“C1-C5 alkyl”). In some embodiments, an alkyl group has 1 to 4 carbon atoms (“C1-C4 alkyl”). In some embodiments, an alkyl group has 1 to 3 carbon atoms (“C1-C3 alkyl”). In some embodiments, an alkyl group has 1 to 2 carbon atoms (“C1-C2 alkyl”). In some embodiments, an alkyl group has 1 carbon atom (“Ci alkyl”). In some embodiments, an alkyl group has 2 to 6 carbon atoms (“C2-C6 alkyl”). Examples of Ci-Ce alkyl groups include, without limitation, methyl (Ci), ethyl (C2), n-propyl (C3), isopropyl (C3), n-butyl (C4), tertbutyl (C4), sec -butyl (C4), iso-butyl (C4), n-pentyl (C5), 3-pentanyl (C5), amyl (C5), neopentyl (C5), 3 -methyl- 2-butanyl (C5), tertiary amyl (C5), and n-hexyl (Ce). Additional examples of alkyl groups include n-heptyl (C7), n-octyl (Cs) and the like. Unless otherwise specified, each instance of an alkyl group is independently unsubstituted (an “unsubstituted alkyl”) or substituted (a “substituted alkyl”) with one or more substituents. In certain embodiments, the alkyl group is an unsubstituted Ci-Ce alkyl. In certain embodiments, the alkyl group is a substituted Ci-CL alkyl.

[000436] Affixing the suffix “-ene” to a group indicates the group is a divalent moiety, e.g., arylene is the divalent moiety of aryl, and heteroarylene is the divalent moiety of heteroaryl.

[000437] Alkylene: The term “alkylene,” as used herein, represents a saturated divalent straight or branched chain hydrocarbon group and is exemplified by methylene, ethylene, isopropylene and the like. Likewise, the term “alkenylene” as used herein represents an unsaturated divalent straight or branched chain hydrocarbon group having one or more unsaturated carbon-carbon double bonds that may occur in any stable point along the chain, and the term “alkynylene” herein represents an unsaturated divalent straight or branched chain hydrocarbon group having one or more unsaturated carbon-carbon triple bonds that may occur in any stable point along the chain. In certain embodiments, an alkylene, alkenylene, or alkynylene group may comprise one or more cyclic aliphatic and/or one or more heteroatoms such as oxygen, nitrogen, or sulfur and may optionally be substituted with one or more substituents such as alkyl, halo, alkoxyl, hydroxy, amino, aryl, ether, ester or amide. For example, an alkylene, alkenylene, or alkynylene may be substituted with one or more e.g., 1, 2, 3, 4, 5, or 6 independently selected substituents) of halogen, -COR”, -CO2H, -CONH2, -CO2R”, -CN, -OH, -OR”, -OCOR”, -OCO2R”, -NH ₂ , -NHR”, -N(R”) ₂ , -SR” or -SO2R”, wherein each instance of R” independently is C1-C10 aliphatic (e.g., C1-C10 alkyl, Ci-Cs alkyl, Ci-Ce alkyl, or C1-C3 alkyl). In embodiments, R” independently is an unsubstituted alkyl (e.g., unsubstituted C1-C10 alkyl, Ci-Cs alkyl, Ci-Ce alkyl, or C1-C3 alkyl). In embodiments, R” independently is unsubstituted C1-C3 alkyl. In certain embodiments, an alkylene, alkenylene, or alkynylene is unsubstituted. In certain embodiments, an alkylene, alkenylene, or alkynylene does not include any heteroatoms.

[000438] Alkenyl: As used herein, “alkenyl” refers to a radical of any linear or branched hydrocarbon chains having one or more unsaturated carbon-carbon double bonds that may occur in any stable point along the chain, e.g. “C2-C10 alkenyl” refers to an alkenyl group having 2-10 carbons. For example, an alkenyl group includes prop-2-enyl, but-2-enyl, but-3- enyl, 2-methylprop-2-enyl, hex-2-enyl, hex-5-enyl, 2,3-dimethylbut-2-enyl, and the like. In embodiments, the alkenyl comprises 1, 2, or 3 carbon-carbon double bond. In embodiments, the alkenyl comprises a single carbon-carbon double bond. In embodiments, multiple double bonds (e.g., 2 or 3) are conjugated. An alkenyl group may be unsubstituted or substituted with one or more substituent groups as described herein. For example, an alkenyl group may be substituted with one or more e.g., 1, 2, 3, 4, 5, or 6 independently selected substituents) of halogen, -COR”, -CO2H, -CONH2, -CO2R”, -CN, -OH, -OR”, -OCOR”, -OCO2R”, -NH ₂ , - NHR”, -N(R”) ₂ , -SR” or-SO2R”, wherein each instance of R” independently is C1-C10 aliphatic (e.g., C1-C10 alkyl, Ci-Cs alkyl, Ci-Ce alkyl, or C1-C3 alkyl). In embodiments, R” independently is an unsubstituted alkyl (e.g., unsubstituted C1-C10 alkyl, Ci-Cs alkyl, Ci-Ce alkyl, or C1-C3 alkyl). In embodiments, R” independently is unsubstituted C1-C3 alkyl. In embodiments, the alkenyl is unsubstituted. In embodiments, the alkenyl is substituted (e.g. , with 1, 2, 3, 4, 5, or 6 substituent groups as described herein). In embodiments, an alkenyl group is substituted with a -OH group and may also be referred to herein as a “hydroxyalkenyl” group, where the prefix denotes the -OH group and “alkenyl” is as described herein.

[000439] For example, “alkenyl” refers to a radical of a straight-chain or branched hydrocarbon group having from 2 to 10 carbon atoms and one or more carbon-carbon double bonds (e.g., 1, 2, 3, or 4 double bonds) (“C2-C10 alkenyl”). In some embodiments, an alkenyl group has 2 to 9 carbon atoms (“C2-C9 alkenyl”). In some embodiments, an alkenyl group has 2 to 8 carbon atoms (“C ₂ -Cs alkenyl”). In some embodiments, an alkenyl group has 2 to 7 carbon atoms (“C2-C7 alkenyl”). In some embodiments, an alkenyl group has 2 to 6 carbon atoms (“C2-C6 alkenyl”). In some embodiments, an alkenyl group has 2 to 5 carbon atoms (“C2-C5 alkenyl”). In some embodiments, an alkenyl group has 2 to 4 carbon atoms (“C2-C4 alkenyl”). In some embodiments, an alkenyl group has 2 to 3 carbon atoms (“C2-C3 alkenyl”). In some embodiments, an alkenyl group has 2 carbon atoms (“C2 alkenyl”). The one or more carbon-carbon double bonds can be internal (such as in 2-butenyl) or terminal (such as in 1- butenyl). Examples of C2-C4 alkenyl groups include, without limitation, ethenyl (C2), 1- propenyl (C3), 2-propenyl (C3), 1-butenyl (C4), 2-butenyl (C4), butadienyl (C4), and the like. Examples of C2-C6 alkenyl groups include the aforementioned C2-C4 alkenyl groups as well as pentenyl (C5), pentadienyl (C5), hexenyl (C6), and the like. Additional examples of alkenyl include heptenyl (C7), octenyl (Cs), octatrienyl (Cs), and the like. Unless otherwise specified, each instance of an alkenyl group is independently unsubstituted (an “unsubstituted alkenyl”) or substituted (a “substituted alkenyl”) with one or more substituents. In certain embodiments, the alkenyl group is an unsubstituted C2-C10 alkenyl. In certain embodiments, the alkenyl group is a substituted C2-C10 alkenyl.

[000440] Alkynyl: As used herein, “alkynyl” refers to a radical of any hydrocarbon chain of either linear or branched configuration, having one or more carbon-carbon triple bonds occurring in any stable point along the chain, e.g., “C2-C10 alkynyl”, refers to an alkynyl group having 2-10 carbons. Examples of an alkynyl group include prop-2-ynyl, but- 2-ynyl, but-3-ynyl, pent-2-ynyl, 3-methylpent-4-ynyl, hex-2-ynyl, hex-5-ynyl, etc. In embodiments, an alkynyl comprises one carbon-carbon triple bond. An alkynyl group may be unsubstituted or substituted with one or more substituent groups as described herein. For example, an alkynyl group may be substituted with one or more (e.g., 1, 2, 3, 4, 5, or 6 independently selected substituents) of halogen, -COR”, -CO2H, -CONH2, -CO2R”, -CN, - OH, -OR”, -OCOR”, -OCO2R”, -NH ₂ , -NHR”, -N(R”) ₂ , -SR” or-SO ₂ R”, wherein each instance of R” independently is C1-C10 aliphatic (e.g., C1-C10 alkyl, C -Cs alkyl, Ci-Ce alkyl, or C1-C3 alkyl). In embodiments, R” independently is an unsubstituted alkyl (e.g., unsubstituted C1-C10 alkyl, Ci-Cs alkyl, Ci-Cr, alkyl, or C1-C3 alkyl). In embodiments, R” independently is unsubstituted C1-C3 alkyl. In embodiments, the alkynyl is unsubstituted. In embodiments, the alkynyl is substituted (e.g., with 1, 2, 3, 4, 5, or 6 substituent groups as described herein).

[000441] For example, “alkynyl” refers to a radical of a straight-chain or branched hydrocarbon group having from 2 to 10 carbon atoms and one or more carbon-carbon triple bonds (e.g., 1, 2, 3, or 4 triple bonds) and optionally one or more double bonds (e.g., 1, 2, 3, or 4 double bonds) (“C2-C10 alkynyl”). An alkynyl group that has one or more triple bonds and one or more double bonds is also referred to as an “ene-yne”. In some embodiments, an alkynyl group has 2 to 9 carbon atoms (“C2-C9 alkynyl”). In some embodiments, an alkynyl group has 2 to 8 carbon atoms (“C2-C8 alkynyl”). In some embodiments, an alkynyl group has 2 to 7 carbon atoms (“C2-C7 alkynyl”). In some embodiments, an alkynyl group has 2 to 6 carbon atoms (“C2-C6 alkynyl”). In some embodiments, an alkynyl group has 2 to 5 carbon atoms (“C2-C5 alkynyl”). In some embodiments, an alkynyl group has 2 to 4 carbon atoms (“C2-C4 alkynyl”). In some embodiments, an alkynyl group has 2 to 3 carbon atoms (“C2-C3 alkynyl”). In some embodiments, an alkynyl group has 2 carbon atoms (“C2 alkynyl”). The one or more carbon-- triple bonds can be internal (such as in 2-butynyl) or terminal (such as in 1-butynyl). Examples of C2-C4 alkynyl groups include, without limitation, ethynyl (C2), 1- propynyl (C3), 2-propynyl (C3), 1-butynyl (C4), 2-butynyl (C4), and the like. Examples of C2- C>, alkenyl groups include the aforementioned C2-C4 alkynyl groups as well as pentynyl (C5), hexynyl (Ce), and the like. Additional examples of alkynyl include heptynyl (C7), octynyl (Cs), and the like. Unless otherwise specified, each instance of an alkynyl group is independently unsubstituted (an “unsubstituted alkynyl”) or substituted (a “substituted alkynyl”) with one or more substituents. In certain embodiments, the alkynyl group is an unsubstituted C2-C10 alkynyl. In certain embodiments, the alkynyl group is a substituted C2- C10 alkynyl.

[000442] Aryl: The term “aryl” used alone or as part of a larger moiety as in “aralkyl,” refers to a monocyclic, bicyclic, or tricyclic carbocyclic ring system having a total of six to fourteen ring members, wherein said ring system has a single point of attachment to the rest of the molecule, at least one ring in the system is aromatic and wherein each ring in the system contains 4 to 7 ring members. In embodiments, an aryl group has 6 ring carbon atoms (“Ce aryl,” e.g., phenyl). In some embodiments, an aryl group has 10 ring carbon atoms (“Cm aryl,” e.g., naphthyl such as 1-naphthyl and 2-naphthyl). In some embodiments, an aryl group has 14 ring carbon atoms (“C14 aryl,” e.g., anthracyl). “Aryl” also includes ring systems wherein the aryl ring, as defined above, is fused with one or more carbocyclyl or heterocyclyl groups wherein the radical or point of attachment is on the aryl ring, and in such instances, the number of carbon atoms continue to designate the number of carbon atoms in the aryl ring system. Exemplary aryls include phenyl, naphthyl, and anthracene.

[000443] As used herein, “aryl” also refers to a radical of a monocyclic or polycyclic (e.g., bicyclic or tricyclic) 4n+2 aromatic ring system (e.g., having 6, 10, or 14 n electrons shared in a cyclic array) having 6-14 ring carbon atoms and zero heteroatoms provided in the aromatic ring system (“Ce-Ci4 aryl”). In some embodiments, an aryl group has 6 ring carbon atoms (“Ce aryl”; e.g., phenyl). In some embodiments, an aryl group has 10 ring carbon atoms (“Cio aryl”; e.g., naphthyl such as 1-naphthyl and 2-naphthyl). In some embodiments, an aryl group has 14 ring carbon atoms (“C14 aryl”; e.g., anthracyl). Unless otherwise specified, each instance of an aryl group is independently unsubstituted (an “unsubstituted aryl”) or substituted (a “substituted aryl”) with one or more substituents. In certain embodiments, the aryl group is an unsubstituted C6-C14 aryl. In certain embodiments, the aryl group is a substituted C6-C14 aryl.

[000444] Arylene: The term “arylene” as used herein refers to an aryl group that is divalent (that is, having two points of attachment to the molecule). Exemplary arylenes include phenylene (e.g., unsubstituted phenylene or substituted phenylene).

[000445] Carbocyclyl: As used herein, “carbocyclyl” or “carbocyclic” refers to a radical of a non-aromatic cyclic hydrocarbon group having from 3 to 10 ring carbon atoms (“C3-C10 carbocyclyl”) and zero heteroatoms in the non-aromatic ring system. In some embodiments, a carbocyclyl group has 3 to 8 ring carbon atoms (“C3-C8 carbocyclyl”). In some embodiments, a carbocyclyl group has 3 to 7 ring carbon atoms (“C3-C7 carbocyclyl”). In some embodiments, a carbocyclyl group has 3 to 6 ring carbon atoms (“C3-C6 carbocyclyl”). In some embodiments, a carbocyclyl group has 4 to 6 ring carbon atoms (“C4-C6 carbocyclyl”). In some embodiments, a carbocyclyl group has 5 to 6 ring carbon atoms (“C5-C6 carbocyclyl”). In some embodiments, a carbocyclyl group has 5 to 10 ring carbon atoms (“C5-C10 carbocyclyl”). Exemplary C3-C6 carbocyclyl groups include, without limitation, cyclopropyl (C3), cyclopropenyl (C3), cyclobutyl (C4), cyclobutenyl (C4), cyclopentyl (C5), cyclopentenyl (C5), cyclohexyl (Ce), cyclohexenyl (Ce), cyclohexadienyl (Ce), and the like. Exemplary C3-C8 carbocyclyl groups include, without limitation, the aforementioned C3-C6 carbocyclyl groups as well as cycloheptyl (C7), cycloheptenyl (C7), cycloheptadienyl (C7), cycloheptatrienyl (C7), cyclooctyl (Cs), cyclooctenyl (Cs), bicyclo[2.2.1]heptanyl (C7), bicyclo[2.2.2]octanyl (Cs), and the like. Exemplary C3-C10 carbocyclyl groups include, without limitation, the aforementioned C3- Cs carbocyclyl groups as well as cyclononyl (C9), cyclononenyl (C9), cyclodecyl (Cio), cyclodecenyl (Cio), octahydro- IH-indenyl (C9), decahydronaphthalenyl (Cio), spiro[4.5]decanyl (Cio), and the like. As the foregoing examples illustrate, in certain embodiments, the carbocyclyl group is either monocyclic (“monocyclic carbocyclyl”) or polycyclic (e.g., containing a fused, bridged or spiro ring system such as a bicyclic system (“bicyclic carbocyclyl”) or tricyclic system (“tricyclic carbocyclyl”)) and can be saturated or can contain one or more carbon-carbon double or triple bonds. “Carbocyclyl” also includes ring systems wherein the carbocyclyl ring, as defined above, is fused with one or more aryl or heteroaryl groups wherein the point of attachment is on the carbocyclyl ring, and in such instances, the number of carbons continue to designate the number of carbons in the carbocyclic ring system. Unless otherwise specified, each instance of a carbocyclyl group is independently unsubstituted (an “unsubstituted carbocyclyl”) or substituted (a “substituted carbocyclyl”) with one or more substituents. In certain embodiments, the carbocyclyl group is an unsubstituted C3-C10 carbocyclyl. In certain embodiments, the carbocyclyl group is a substituted C3- C10 carbocyclyl.

[000446] In some embodiments, “carbocyclyl” or “carbocyclic” is referred to as a “cycloalkyl”, i.e., a monocyclic, saturated carbocyclyl group having from 3 to 10 ring carbon atoms (“C3-C10 cycloalkyl”). In some embodiments, a cycloalkyl group has 3 to 8 ring carbon atoms (“C3-C8 cycloalkyl”). In some embodiments, a cycloalkyl group has 3 to 6 ring carbon atoms (“C3-C6, cycloalkyl”). In some embodiments, a cycloalkyl group has 4 to 6 ring carbon atoms (“C4-C6 cycloalkyl”). In some embodiments, a cycloalkyl group has 5 to 6 ring carbon atoms (“Cs-Ce cycloalkyl”). In some embodiments, a cycloalkyl group has 5 to 10 ring carbon atoms (“C5-C10 cycloalkyl”). Examples of Cs-Ce cycloalkyl groups include cyclopentyl (C5) and cyclohexyl (C5). Examples of C3-C6 cycloalkyl groups include the aforementioned C5-C6 cycloalkyl groups as well as cyclopropyl (C3) and cyclobutyl (C4). Examples of C3-C8 cycloalkyl groups include the aforementioned C3-C6 cycloalkyl groups as well as cycloheptyl (C7) and cyclooctyl (Cs). Unless otherwise specified, each instance of a cycloalkyl group is independently unsubstituted (an “unsubstituted cycloalkyl”) or substituted (a “substituted cycloalkyl”) with one or more substituents. In certain embodiments, the cycloalkyl group is an unsubstituted C3-C6 cycloalkyl. In certain embodiments, the cycloalkyl group is a substituted C3-C6 cycloalkyl.

[000447] Halogen As used herein, the term “halogen” means fluorine, chlorine, bromine, or iodine.

[000448] Heteroalkyl The term “heteroalkyl” refers to a radical of a branched or unbranched alkyl, alkenyl, or alkynyl group having carbon atoms in addition to heteroatoms independently selected from the group consisting of N, O, S, and P. For example, “heteroalkyl” can mean a branched or unbranched alkyl, alkenyl, or alkynyl group having from 1 to 8 carbon atoms in addition to 1, 2, 3 or 4 heteroatoms independently selected from the group consisting of N, O, S, and P. For example, the term “heteroalkyl” refers to a radical of a branched or unbranched alkyl, alkenyl, or alkynyl group having from 1 to 40 carbon atoms in addition to heteroatoms independently selected from the group consisting of N, 0,

5, and P (“C1-C40 heteroalkyl”). In an embodiment, the term “heteroalkyl” refers to a radical of a branched or unbranched alkyl group having from 1 to 40 carbon atoms in addition to heteroatoms independently selected from the group consisting of N, 0, S, and P (“C1-C40 heteroalkyl”). In an embodiment, a “heteroalkyl” can comprise about 1 to about 7 heteroatoms, independently selected from the group consisting of N, 0, S, and P, for every 10 carbons in the “heteroalkyl”. In an embodiment, a “heteroalkyl” can comprise about 1 to about 5 heteroatoms, independently selected from the group consisting of N, 0, S, and P, for every 10 carbons in the “heteroalkyl”. In an embodiment, the heteroatoms are independently selected from the group consisting of N, 0 or S. In an embodiment, the heteroatoms are independently selected from the group consisting of N or 0. Heteroalkyls include tertiary amines, secondary amines, ethers, thioethers, amides, thioamides, carbamates, thiocarbamates, hydrazones, imines, phosphodiesters, phosphoramidates, sulfonamides, and disulfides. A heteroalkyl group may optionally include monocyclic, bicyclic, or tricyclic rings, in which each ring desirably has three to eight members, for example a heteroalkyl group may optionally include one or more triazole ring(s). Examples of heteroalkyls include polyethers, such as methoxymethyl and ethoxyethyl, and hydrophilic polymers, such as polyethylene glycol (PEG).

[000449] Heteroalkylene: The term “heteroalkylene,” as used herein, represents a divalent form of a heteroalkyl group as described herein.

[000450] Heteroaryl: The term “heteroaryl,” as used herein, is fully unsaturated heteroatom-containing ring wherein at least one ring atom is a heteroatom such as, but not limited to, nitrogen and oxygen.

[000451] As used herein, “heteroaryl” also refers to a radical of a 5-14 membered monocyclic or polycyclic (e.g., bicyclic or tricyclic) 4n+2 aromatic ring system (e.g., having

6, 10, or 14 7i electrons shared in a cyclic array) having ring carbon atoms and 1 or more (e.g., 1, 2, 3, or 4 ring heteroatoms) ring heteroatoms provided in the aromatic ring system, wherein each heteroatom is independently selected from oxygen, sulfur, nitrogen, boron, silicon, and phosphorus (“5-14 membered heteroaryl”). In heteroaryl groups that contain one or more nitrogen atoms, the point of attachment can be a carbon or nitrogen atom, as valency permits. Heteroaryl polycyclic ring systems can include one or more heteroatoms in one or both rings. “Heteroaryl” includes ring systems wherein the heteroaryl ring, as defined above, is fused with one or more carbocyclyl or heterocyclyl groups wherein the point of attachment is on the heteroaryl ring, and in such instances, the number of ring members continue to designate the number of ring members in the heteroaryl ring system. “Heteroaryl” also includes ring systems wherein the heteroaryl ring, as defined above, is fused with one or more aryl groups wherein the point of attachment is either on the aryl or heteroaryl ring, and in such instances, the number of ring members designates the number of ring members in the fused polycyclic (aryl/heteroaryl) ring system. Polycyclic heteroaryl groups wherein one ring does not contain a heteroatom (e.g., indolyl, quinolinyl, carbazolyl, and the like) the point of attachment can be on either ring, i.e., either the ring bearing a heteroatom (e.g., 2-indolyl) or the ring that does not contain a heteroatom (e.g., 5-indolyl).

[000452] In some embodiments, a heteroaryl group is a 5-10 membered aromatic ring system having ring carbon atoms and 1 or more (e.g., 1, 2, 3, or 4) ring heteroatoms provided in the aromatic ring system, wherein each heteroatom is independently selected from oxygen, sulfur, nitrogen, boron, silicon, and phosphorus (“5-10 membered heteroaryl”). In some embodiments, a heteroaryl group is a 5-8 membered aromatic ring system having ring carbon atoms and 1 or more (e.g., 1, 2, 3, or 4) ring heteroatoms provided in the aromatic ring system, wherein each heteroatom is independently selected from oxygen, sulfur, nitrogen, boron, silicon, and phosphorus (“5-8 membered heteroaryl”). In some embodiments, a heteroaryl group is a 5-6 membered aromatic ring system having ring carbon atoms and 1 or more (e.g., 1, 2, 3, or 4) ring heteroatoms provided in the aromatic ring system, wherein each heteroatom is independently selected from oxygen, sulfur, nitrogen, boron, silicon, and phosphorus (“5-6 membered heteroaryl”). In some embodiments, the 5-6 membered heteroaryl has 1 or more (e.g., 1, 2, or 3) ring heteroatoms selected from oxygen, sulfur, nitrogen, boron, silicon, and phosphorus. In some embodiments, the 5-6 membered heteroaryl has 1 or 2 ring heteroatoms selected from oxygen, sulfur, nitrogen, boron, silicon, and phosphorus. In some embodiments, the 5-6 membered heteroaryl has 1 ring heteroatom selected from oxygen, sulfur, nitrogen, boron, silicon, and phosphorus. Unless otherwise specified, each instance of a heteroaryl group is independently unsubstituted (an “unsubstituted heteroaryl”) or substituted (a “substituted heteroaryl”) with one or more substituents. In certain embodiments, the heteroaryl group is an unsubstituted 5-14 membered heteroaryl. In certain embodiments, the heteroaryl group is a substituted 5-14 membered heteroaryl. [000453] Exemplary 5-membered heteroaryl groups containing 1 heteroatom include, without limitation, pyrrolyl, furanyl and thiophenyl. Exemplary 5 -membered heteroaryl groups containing 2 heteroatoms include, without limitation, imidazolyl, pyrazolyl, oxazolyl, isoxazolyl, thiazolyl, and isothiazolyl. Exemplary 5-membered heteroaryl groups containing 3 heteroatoms include, without limitation, triazolyl, oxadiazolyl, and thiadiazolyl. Exemplary

5 -membered heteroaryl groups containing 4 heteroatoms include, without limitation, tetrazolyl. Exemplary 6-membered heteroaryl groups containing 1 heteroatom include, without limitation, pyridinyl. Exemplary 6-membered heteroaryl groups containing 2 heteroatoms include, without limitation, pyridazinyl, pyrimidinyl, and pyrazinyl. Exemplary

6-membered heteroaryl groups containing 3 or 4 heteroatoms include, without limitation, triazinyl and tetrazinyl, respectively. Exemplary 7-membered heteroaryl groups containing 1 heteroatom include, without limitation, azepinyl, oxepinyl, and thiepinyl. Exemplary 5,6- bicyclic heteroaryl groups include, without limitation, indolyl, isoindolyl, indazolyl, benzotriazolyl, benzothiophenyl, isobenzothiophenyl, benzofuranyl, benzoisofuranyl, benzimidazolyl, benzoxazolyl, benzisoxazolyl, benzoxadiazolyl, benzthiazolyl, benzisothiazolyl, benzthiadiazolyl, indolizinyl, and purinyl. Exemplary 6,6-bicyclic heteroaryl groups include, without limitation, naphthyridinyl, pteridinyl, quinolinyl, isoquinolinyl, cinnolinyl, quinoxalinyl, phthalazinyl, and quinazolinyl. Exemplary tricyclic heteroaryl groups include, without limitation, phenanthridinyl, dibenzofuranyl, carbazolyl, acridinyl, pheno thiazinyl, phenoxazinyl and phenazinyl.

[000454] As used herein, “heterocyclyl” or “heterocyclic” refers to a radical of a 3- to 14-membered non-aromatic ring system having ring carbon atoms and 1 or more (e.g., 1, 2, 3, or 4) ring heteroatoms, wherein each heteroatom is independently selected from oxygen, sulfur, nitrogen, boron, silicon, and phosphorus (“3-14 membered heterocyclyl”). In heterocyclyl groups that contain one or more nitrogen atoms, the point of attachment can be a carbon or nitrogen atom, as valency permits. A heterocyclyl group can either be monocyclic (“monocyclic heterocyclyl”) or polycyclic (e.g., a fused, bridged or spiro ring system such as a bicyclic system (“bicyclic heterocyclyl”) or tricyclic system (“tricyclic heterocyclyl”)). and can be saturated or can contain one or more carbon-carbon double or triple bonds. Heterocyclyl polycyclic ring systems can include one or more heteroatoms in one or both rings. “Heterocyclyl” also includes ring systems wherein the heterocyclyl ring, as defined above, is fused with one or more carbocyclyl groups wherein the point of attachment is either on the carbocyclyl or heterocyclyl ring, or ring systems wherein the heterocyclyl ring, as defined above, is fused with one or more aryl or heteroaryl groups, wherein the point of attachment is on the heterocyclyl ring, and in such instances, the number of ring members continue to designate the number of ring members in the heterocyclyl ring system. Unless otherwise specified, each instance of heterocyclyl is independently unsubstituted (an “unsubstituted heterocyclyl”) or substituted (a “substituted heterocyclyl”) with one or more substituents. In certain embodiments, the heterocyclyl group is an unsubstituted 3-14 membered heterocyclyl. In certain embodiments, the heterocyclyl group is a substituted 3-14 membered heterocyclyl.

[000455] In some embodiments, a heterocyclyl group is a 5-10 membered non-aromatic ring system having ring carbon atoms and 1 or more (e.g., 1, 2, 3, or 4) ring heteroatoms, wherein each heteroatom is independently selected from oxygen, sulfur, nitrogen, boron, silicon, and phosphorus (“5-10 membered heterocyclyl”). In some embodiments, a heterocyclyl group is a 5-8 membered non-aromatic ring system having ring carbon atoms and 1 or more (e.g., 1, 2, 3, or 4) ring heteroatoms, wherein each heteroatom is independently selected from oxygen, sulfur, nitrogen, boron, silicon, and phosphorus (“5-8 membered heterocyclyl”). In some embodiments, a heterocyclyl group is a 5-6 membered non-aromatic ring system having ring carbon atoms and 1 or more (e.g., 1, 2, 3, or 4) ring heteroatoms, wherein each heteroatom is independently selected from oxygen, sulfur, nitrogen, boron, silicon, and phosphorus (“5-6 membered heterocyclyl”). In some embodiments, the 5-6 membered heterocyclyl has 1 or more (e.g., 1, 2, or 3) ring heteroatoms selected from oxygen, sulfur, nitrogen, boron, silicon, and phosphorus. In some embodiments, the 5-6 membered heterocyclyl has 1 or 2 ring heteroatoms selected from oxygen, sulfur, nitrogen, boron, silicon, and phosphorus. In some embodiments, the 5-6 membered heterocyclyl has 1 ring heteroatom selected from oxygen, sulfur, nitrogen, boron, silicon, and phosphorus.

[000456] Exemplary 3-membered heterocyclyl groups containing 1 heteroatom include, without limitation, azirdinyl, oxiranyl, thiorenyl. Exemplary 4-membered heterocyclyl groups containing 1 heteroatom include, without limitation, azetidinyl, oxetanyl and thietanyl. Exemplary 5 -membered heterocyclyl groups containing 1 heteroatom include, without limitation, tetrahydrofuranyl, dihydrofuranyl, tetrahydrothiophenyl, dihydrothiophenyl, pyrrolidinyl, dihydropyrrolyl and pyrrolyl-2, 5-dione. Exemplary 5- membered heterocyclyl groups containing 2 heteroatoms include, without limitation, dioxolanyl, oxathiolanyl and dithiolanyl. Exemplary 5-membered heterocyclyl groups containing 3 heteroatoms include, without limitation, triazolinyl, oxadiazolinyl, and thiadiazolinyl. Exemplary 6-membered heterocyclyl groups containing 1 heteroatom include, without limitation, piperidinyl, tetrahydropyranyl, dihydropyridinyl, and thianyl. Exemplary 6-membered heterocyclyl groups containing 2 heteroatoms include, without limitation, piperazinyl, morpholinyl, dithianyl, dioxanyl. Exemplary 6-membered heterocyclyl groups containing 2 heteroatoms include, without limitation, triazinanyl. Exemplary 7-membered heterocyclyl groups containing 1 heteroatom include, without limitation, azepanyl, oxepanyl and thiepanyl. Exemplary 8-membered heterocyclyl groups containing 1 heteroatom include, without limitation, azocanyl, oxecanyl and thiocanyl. Exemplary bicyclic heterocyclyl groups include, without limitation, indolinyl, isoindolinyl, dihydrobenzofuranyl, dihydrobenzothienyl, tetrahydrobenzothienyl, tetrahydrobenzofuranyl, tetrahydroindolyl, tetrahydroquinolinyl, tetrahydroisoquinolinyl, decahydroquinolinyl, decahydroisoquinolinyl, octahydrochromenyl, octahydroisochromenyl, decahydronaphthyridinyl, decahydro- 1,8- naphthyridinyl, octahydropyrrolo[3,2-b]pyrrole, indolinyl, phthalimidyl, naphthalimidyl, chromanyl, chromenyl, lH-benzo[e][l,4]diazepinyl, l,4,5,7-tetrahydropyrano[3,4-b] pyrrolyl, 5,6-dihydro-4H-furo[3,2-b]pyrrolyl, 6,7-dihydro-5H-furo[3,2-b]pyranyl, 5,7-dihydro-4H- thieno[2,3-c]pyranyl, 2,3-dihydro-lH-pyrrolo[2,3-b Jpyridinyl, 2,3-dihydrofuro[2,3-b]pyridinyl, 4,5,6,7-letrahydro-lH-pyrrolo-|2,3-b|pyridinyl, 4,5,6,7-tetrahydrofuro[3,2-c]pyridinyl, 4, 5,6,7- tetrahydrothieno [3,2- b]pyridinyl, l,2,3,4-tetrahydro-l,6-naphthyridinyl, and the like.

[000457] Heterocycloalkyl: The term “heterocycloalkyl,” as used herein, is a nonaromatic ring wherein at least one atom is a heteroatom such as, but not limited to, nitrogen, oxygen, sulfur, or phosphorus, and the remaining atoms are carbon. In some embodiments, a heterocycloalkyl group has from 3 to 10 ring carbon atoms (“C3-C10 heterocycloalkyl”). In some embodiments, a heterocycloalkyl group has 3 to 8 ring carbon atoms (“C3-C8 heterocycloalkyl”). In some embodiments, a heterocycloalkyl group has 3 to 6 ring carbon atoms (“C3-C6, heterocycloalkyl”). In some embodiments, a heterocycloalkyl group has 4 to 6 ring carbon atoms (“C4-C6 heterocycloalkyl”). In some embodiments, a heterocycloalkyl group has 5 to 6 ring carbon atoms (“C5-C6 heterocycloalkyl”). In some embodiments, a heterocycloalkyl group has 5 to 10 ring carbon atoms (“C5-C10 heterocycloalkyl”).

Examples of C3-C6 heterocycloalkyl groups include tetrahydropyranyl (C5) and piperazinyl (C4). Unless otherwise specified, each instance of a heterocycloalkyl group is independently unsubstituted (an “unsubstituted heterocycloalkyl”) or substituted (a “substituted heterocycloalkyl”) with one or more substituents. In certain embodiments, the heterocycloalkyl group is an unsubstituted C ₃ -Ce heterocycloalkyl. In certain embodiments, the heterocycloalkyl group is a substituted C3-C6 heterocycloalkyl.

[000458] As understood from the above, alkyl, heteroalkyl, alkenyl, alkynyl, acyl, carbocyclyl, cycloalkyl, heterocyclyl, heterocycloalkyl, aryl, and heteroaryl groups, as defined herein, are, in certain embodiments, optionally substituted. Optionally substituted refers to a group which may be substituted or unsubstituted (e.g., “substituted” or “unsubstituted” alkyl, “substituted” or “unsubstituted” alkenyl, “substituted” or “unsubstituted” alkynyl, “substituted” or “unsubstituted” heteroalkyl, “substituted” or “unsubstituted” heteroalkenyl, “substituted” or ’unsubstituted” heteroalkynyl, “substituted” or “unsubstituted” carbocyclyl, “substituted” or “unsubstituted” cycloalkyl, “substituted” or “unsubstituted” heterocyclyl, “substituted” or “unsubstituted” heterocycloalkyl, “substituted” or “unsubstituted” aryl or “substituted” or “unsubstituted” heteroaryl group. In general, the term “substituted” means that at least one hydrogen present on a group is replaced with a permissible substituent, e.g., a substituent which upon substitution results in a stable compound, e.g., a compound which does not spontaneously undergo transformation such as by rearrangement, cyclization, elimination, or other reaction. Unless otherwise indicated, a “substituted” group has a substituent at one or more substitutable positions of the group, and when more than one position in any given structure is substituted, the substituent is either the same or different at each position. The term “substituted” is contemplated to include substitution with all permissible substituents of organic compounds, any of the substituents described herein that results in the formation of a stable compound. The present invention contemplates any and all such combinations in order to arrive at a stable compound. For purposes of this invention, heteroatoms such as nitrogen may have hydrogen substituents and/or any suitable substituent as described herein which satisfy the valencies of the heteroatoms and results in the formation of a stable moiety.

[000459] Exemplary carbon atom substituents include, but are not limited to, halogen, -CN, -NO ₂ , -N ₃ , -SO ₂ , -SO3H, -OH, -OR ^aa , -ON(R ^bb ) ₂ , -N(R ^bb ) ₂ , -N(R ^bb ) ₃ +X-, - N(0R ^cc )R ^bb , -SeH, -SeR ^aa , -SH, -SR ^aa , -SSR ^CC , -C(=O)R ^aa , -CO ₂ H, -CHO, -C(OR ^CC ) ₂ , - CO ₂ R ^aa , -OC(=O)R ^aa , -OCO ₂ R ^aa , -C(=O)N(R ^bb ) ₂ , -OC(=O)N(R ^bb ) ₂ , -NR ^bb C(=O)R ^aa , - NR ^bb CO ₂ R ^aa , -NR ^bb C(=O)N(R ^bb ) ₂ , -C(=NR ^bb )R ^aa , -C(=NR ^bb )OR ^aa , -OC(=NR ^bb )R ^aa , - OC(=NR ^bb )OR ^aa , -C(=NR ^bb )N(R ^bb ) ₂ , -OC(=NR ^bb )N(R ^bb ) ₂ , -NR ^bb C(=NR ^bb )N(R ^bb ) ₂ , - C(=O)NR ^bb SO ₂ R ^aa , -NR ^bb SO ₂ R ^aa , -SO ₂ N(R ^bb ) ₂ , -SO ₂ R ^aa , -SO ₂ OR ^aa , -OSO ₂ R ^aa , - S(=O)R ^aa , -OS(=O)R ^aa , -Si(R ^aa ) ₃ -OSi(R ^aa ) ₃ -C(=S)N(R ^bb ) ₂ , -C(=O)SR ^aa , -C(=S)SR ^aa , - SC(=S)SR ^aa , -SC(=O)SR ^aa , -OC(=O)SR ^aa , -SC(=O)OR ^aa , -SC(=O)R ^aa , -P(=O) ₂ R ^aa , - OP(=O) ₂ N(R ^bb ) ₂ , - P(=O)(NR ^bb ) ₂ , -OP(=O)(NR ^bb ) ₂ , -NR ^bb P(=O)(OR ^cc ) ₂ , - NR ^bb P(=O)(NR ^bb ) ₂ , -P(R ^CC ) ₂ , - P(R ^CC ) ₃ , -OP(R ^CC ) ₂ , -OP(R ^CC ) ₃ , -B(R ^aa ) ₂ , -B(OR ^CC ) ₂ , - BR ^aa (OR ^cc ), C1-C10 alkyl, C2-C10 alkenyl, C ₂ -Cio alkynyl, C ₃ -Ci4 carbocyclyl, 3-14 membered heterocyclyl, Ce-Ci4 aryl, and 5-14 membered heteroaryl, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R ^dd groups; or two geminal hydrogens on a carbon atom are replaced with the group =0, =S, =NN(R ^bb ) ₂ , =NNR ^bb C(=0)R ^aa , =NNR ^bb C(=0)0R ^aa , =NNR ^bb S(=O) ₂ R ^aa , =NR ^bb , or =NOR ^cc ; each instance of R^ is, independently, selected from C1-C10 alkyl, C ₂ -Cio alkenyl, C ₂ - C10 alkynyl, C ₃ -Cio carbocyclyl, 3-14 membered heterocyclyl, C6-C14 aryl, and 5-14 membered heteroaryl, or two R ^aa groups are joined to form a 3-14 membered heterocyclyl or 5-14 membered heteroaryl ring, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R ^dd groups; each instance of R ^bb is, independently, selected from hydrogen, -OH, -OR ^aa , - N(R ^CC ) ₂ , -CN, -C(=O)R ^aa , -C(=O)N(R ^CC ) ₂ , -CO ₂ R ^aa , -SO ₂ R ^aa , -C(=NR ^cc )OR ^aa , - C(=NR ^CC )N(R ^CC ) ₂ , - SO ₂ N(R ^CC ) ₂ , -SO ₂ R ^CC , -SO ₂ OR ^CC , -SOR ^aa , -C(=S)N(R ^CC ) ₂ , -C(=O)SR“, - C(=S)SR“, - P(=O) ₂ R ^aa , -P(=O)(R ^aa ) ₂ , -P(=O) ₂ N(R ^CC ) ₂ , -P(=O)(NR ^CC ) ₂ , C1-C10 alkyl, C ₂ -C10 alkenyl, C ₂ -Cio alkynyl, C ₃ -C10 carbocyclyl, 3-14 membered heterocyclyl, C6-C14 aryl, and 5-14 membered heteroaryl, or two R ^bb groups, together with the heteroatom to which they are attached, form a 3-14 membered heterocyclyl or 5-14 membered heteroaryl ring, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R ^dd groups; each instance of R ^cc is, independently, selected from hydrogen, C1-C10 alkyl, C ₂ -Cio alkenyl, C2-C10 alkynyl, C ₃ -Cio carbocyclyl, 3-14 membered heterocyclyl, C6-C14 aryl, and 5- 14 membered heteroaryl, or two R ^cc groups, together with the heteroatom to which they are attached, form a 3-14 membered heterocyclyl or 5-14 membered heteroaryl ring, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R ^dd groups; each instance of R ^dd is, independently, selected from halogen, -CN, -NO ₂ , -N ₃ , - SO ₂ H, -SO ₃ H, -OH, -OR ^ee , -ON(R ^ff ) ₂ , -N(R ^ff ) ₂ , -N(R ^ff ) ₃ +X’, -N(0R ^ee )R ^ff , -SH, -SR ^ee , - SSR ^ee , -C(=O)R ^ee , -CO2H, -CO ₂ R ^ee , -OC(=O)R ^ee , -OCO ₂ R ^ee , -C(=O)N(R") ₂ , - OC(=O)N( R") ₂ , - NR ^ff C(=O)R ^ee , -NR ^ff CO ₂ R ^ee , -NR ^ff C(=O)N(R ^ff ) ₂ , -C(=NR ^ff )OR ^ee , - OC(=NR ^ff )R ^ee , - OC(=NR ^ff )OR ^ee , -C(=NR ^ff )N(R ^ff ) ₂ , -OC(=NR ^ff )N(R ^ff ) ₂ , -NR ^ff C(=NR ^ff )N(R ^ff ) ₂ , - NR ^ff SO ₂ R ^ee , -SO ₂ N(R ^ff ) ₂ , -SO ₂ R ^ee , -SO ₂ OR ^ee , -OSO ₂ R ^ee , -S(=O)R ^ee , -Si(R ^ee ) ₃ , - OSi(R ^ee ) ₃ , -C(=S)N(R ^ff ) ₂ , -C(=O)SR ^ee , -C(=S)SR ^ee , -SC(=S)SR ^ee , -P(=O) ₂ R ^ee , - P(=O)(R ^ee ) ₂ , -OP(=O)(R ^ee ) ₂ , -OP(=O)(OR ^ee ) ₂ , C1-C10 alkyl, C ₂ -Cio alkenyl, C ₂ -Cio alkynyl, C ₃ -C ₁₀ carbocyclyl, 3-10 membered heterocyclyl, Ce-Cio aryl, 5-10 membered heteroaryl, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R ^sg groups, or two geminal R ^dd substituents can be joined to form =O or =S; each instance of R ^ee is, independently, selected from C1-C10 alkyl, C ₂ -Cio alkenyl, C ₂ - C10 alkynyl, C ₃ -Cio carbocyclyl, Ce-Cio aryl, 3-10 membered heterocyclyl, and 3-10 membered heteroaryl, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R ^gg groups; each instance of R ^ff is, independently, selected from hydrogen, C1-C10 alkyl, C ₂ -Cio alkenyl, C ₂ -Cio alkynyl, C ₃ -Cio carbocyclyl, 3-10 membered heterocyclyl, Ce-Cio aryl and 5- 10 membered heteroaryl, or two R ^ff groups, together with the heteroatom to which they are attached, form a 3-14 membered heterocyclyl or 5-14 membered heteroaryl ring, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R ^gg groups; and each instance of R ^gg is, independently, halogen, -CN, -NO ₂ , -N ₃ , -SO ₂ H, -SO ₃ H, -OH, -OC1-C10 alkyl, -ON(Ci-Cio alkyl) ₂ , -N(Ci-Cio alkyl) ₂ , -N(Ci-Cio alkyl) ₃ +X; -NH(Ci- Cio alkyl) ₂ +X-, -NH ₂ (CI-CIO alkyl) +X; -NH ₃ +X’, -N(OCi-Cio alkyl)(Ci-Cio alkyl), - N(OH)(Ci-Cio alkyl), -NH(OH), -SH, -SC1-C10 alkyl, -SS(Ci-Cio alkyl), -C(=0)(Ci-Cio alkyl), -CO ₂ H, -C0 ₂ (CI-CIO alkyl), -OC(=0)(Ci-Cio alkyl), -OC0 ₂ (Ci-Cio alkyl), - C(=O)NH ₂ , -C(=0)N(CI-CIO alkyl) ₂ , -OC(=0)NH(Ci-Cio alkyl), -NHC(=0)(Ci-Cio alkyl), -N(Ci-Cio alkyl)C(=0)(Ci-Cio alkyl), -NHC0 ₂ (CI-CIO alkyl), -NHC(=0)N(Ci-Cio alkyl) ₂ , -NHC(=0)NH(Ci-Cio alkyl), -NHC(=O)NH ₂ , -C(=NH)0(Ci-Cio alkyl), - OC(=NH)(Ci-Cio alkyl), -OC(=NH)OCi-Cio alkyl, - C(=NH)N(Ci-Cio alkyl) ₂ , - C(=NH)NH(Ci-Cio alkyl), -C(=NH)NH ₂ , -OC(=NH)N(Ci-Cioalkyl) ₂ , -OC(NH)NH(Ci-Cio alkyl), -OC(NH)NH ₂ , -NHC(NH)N(CI-CIO alkyl) ₂ , -NHC(=NH)NH ₂ , -NHS0 ₂ (CI-CIO alkyl), -S0 ₂ N(CI-CIO alkyl) ₂ , -S0 ₂ NH(CI-CIO alkyl), - S0 ₂ NH ₂ ,-S0 ₂ (Ci-Cio alkyl), -SO ₂ O(Ci-Cw alkyl), -OSO ₂ (Ci-C ₆ alkyl), -SO(Ci-C ₆ alkyl), -Si(Ci-Cio alkyl) ₃ , -OSi(Ci-C ₆ alkyl) ₃ , - C(=S)N(Ci-Cio alkyl) ₂ , C(=S)NH(Ci-Cio alkyl), C(=S)NH ₂ , -C(=O)S(Ci-C ₆ alkyl), - C(=S)S(Ci-C ₆ alkyl), -SC(=S)S(Ci-C ₆ alkyl), -P(=0) ₂ (Ci-Cio alkyl), -P(=0)(Ci-Cio alkyl) ₂ , - OP(=0)(Ci-Cio alkyl) ₂ , -OP(=0)(OCi-Cio alkyl) ₂ , C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, C3-C10 carbocyclyl, Ce-Cio aryl, 3-10 membered heterocyclyl, 5-10 membered heteroaryl; or two geminal R ^gs substituents can be joined to form =0 or =S; wherein X’ is a counterion.

[000460] As used herein, the term “halo” or “halogen” refers to fluorine (fluoro, -F), chlorine (chloro, -Cl), bromine (bromo, -Br), or iodine (iodo, -I).

[000461] As used herein, a “counterion” is a negatively charged group associated with a positively charged quarternary amine in order to maintain electronic neutrality. Exemplary counterions include halide ions (e.g., F', Cl', Bf , I ), NO3’, CIO4’, OH', H2PO4’, HSO4’, sulfonate ions (e.g., methansulf onate, trifluoromethanesulfonate, p-toluenesulfonate, benzenesulfonate, 10-camphor sulfonate, naphthalene-2-sulfonate, naphthalene-l-sulfonic acid-5-sulfonate, ethan-1 -sulfonic acid-2-sulfonate, and the like), and carboxylate ions (e.g., acetate, ethanoate, propanoate, benzoate, glycerate, lactate, tartrate, glycolate, and the like).

[000462] Nitrogen atoms can be substituted or unsubstituted as valency permits, and include primary, secondary, tertiary, and quarternary nitrogen atoms. Exemplary nitrogen atom substitutents include, but are not limited to, hydrogen, -OH, -OR ^aa , -N(R ^CC ) ₂ , -CN, - C(=O)R ^aa , -C(=O)N(R ^CC ) ₂ , -CO ₂ R ^aa , -SO ₂ R ^aa , -C(=NR ^bb )R ^aa , -C(=NR ^cc )OR ^aa , - C(=NR ^cc )N(R ^CC ) ₂ , -SO ₂ N(R ^CC )2, -SO ₂ R ^CC , -SO ₂ OR ^CC , -SOR ^aa , -C(=S)N(R ^CC ) ₂ , -C(=O)SR“, - C(=S)SR ^CC , -CH ₂ (CO ₂ H), -P(=O) ₂ R ^aa , -P(=O)(R ^aa )2, -P(=O) ₂ N(R ^CC ) ₂ , -P(=O)(NR ^CC ) ₂ , C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, C3-C10 carbocyclyl, 3-14 membered heterocyclyl, C6- C14 aryl, and 5-14 membered heteroaryl, or two R ^cc groups, together with the N atom to which they are attached, form a 3-14 membered heterocyclyl or 5-14 membered heteroaryl ring, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R ^dd groups, and wherein R ^aa , R ^bb , R ^cc and R ^dd are as defined above.

[000463] In certain embodiments, the substituent present on a nitrogen atom is a nitrogen protecting group (also referred to as an amino protecting group). Nitrogen protecting groups are well known in the art and include those described in detail in Protecting Groups in Organic Synthesis, T. W. Greene and P. G. M. Wuts, 3rd edition, John Wiley & Sons, 1999, incorporated herein by reference [000464] For example, nitrogen protecting groups such as amide groups (e.g., - C(=O)R ^aa ) include, but are not limited to, formamide, acetamide, chloroacetamide, trichloroacetamide, trifluoroacetamide, phenylacetamide, 3-phenylpropanamide, picolinamide, 3 -pyridylcarboxamide, N-benzoylphenylalanyl derivative, benzamide, p- phenylbenzamide, o-nitophenylacetamide, o-nitrophenoxyacetamide, acetoacetamide, (N’- dithiobenzyloxyacylamino)acetamide, 3-(p-hydroxyphenyl)propanamide, 3-(o- nitrophenyl)propanamide, 2-methyl-2-(o-nitrophenoxy)propanamide, 2-methyl-2-(o- phenylazophenoxy)propanamide, 4-chlorobutanamide, 3-methyl-3-nitrobutanamide, o- nitrocinnamide, N- acetylmethionine derivative, o-nitrobenzamide and o- (benzoyloxymethyl)benzamide.

[000465] Nitrogen protecting groups such as carbamate groups (e.g., -C(=O)OR ^aa ) include, but are not limited to, methyl carbamate, ethyl carbamante, 9-fluorenylmethyl carbamate (Fmoc), 9-(2-sulfo)fluorenylmethyl carbamate, 9-(2,7-dibromo)fluoroenylmethyl carbamate, 2,7-di-t-butyl-[9-(10,10-dioxo-10,10,10,10-tetrahydrothioxan thyl)]methyl carbamate (DBD-Tmoc), 4-methoxyphenacyl carbamate (Phenoc), 2,2,2-trichloroethyl carbamate (Troc), 2-trimethylsilylethyl carbamate (Teoc), 2-phenylethyl carbamate (hZ), 1- (l-adamantyl)-l-methylethyl carbamate (Adpoc), l,l-dimethyl-2-haloethyl carbamate, 1,1- dimethyl-2,2-dibromoethyl carbamate (DB-t-BOC), l,l-dimethyl-2,2,2-trichloroethyl carbamate (TCBOC), l-methyl-l-(4-biphenylyl)ethyl carbamate (Bpoc), l-(3,5-di-t- butylphenyl)-l -methylethyl carbamate (t-Bumeoc), 2-(2’-and 4’-pyridyl)ethyl carbamate (Pyoc), 2-(N,N-dicyclohexylcarboxamido)ethyl carbamate, t-butyl carbamate (BOC), 1- adamantyl carbamate (Adoc), vinyl carbamate (Voc), allyl carbamate (Alloc), 1- isopropylallyl carbamate (Ipaoc), cinnamyl carbamate (Coc), 4-nitrocinnamyl carbamate (Noc), 8-quinolyl carbamate, N-hydroxypiperidinyl carbamate, alkyldithio carbamate, benzyl carbamate (Cbz), p-methoxybenzyl carbamate (Moz), p-nitobenzyl carbamate, p- bromobenzyl carbamate, p-chlorobenzyl carbamate, 2,4-dichlorobenzyl carbamate, 4- methylsulfinylbenzyl carbamate (Msz), 9- anthrylmethyl carbamate, diphenylmethyl carbamate, 2-methylthioethyl carbamate, 2-methylsulfonylethyl carbamate, 2-(p- toluenesulfonyl)ethyl carbamate, [2-(l,3-dithianyl)]methyl carbamate (Dmoc), 4- methylthiophenyl carbamate (Mtpc), 2,4-dimethylthiophenyl carbamate (Bmpc), 2- phosphonioethyl carbamate (Peoc), 2-triphenylphosphonioisopropyl carbamate (Ppoc), 1,1- dimethyl-2-cyanoethyl carbamate, m-chloro-p-acyloxybenzyl carbamate, p- (dihydroxyboryl)benzyl carbamate, 5-benzisoxazolylmethyl carbamate, 2-(trifluoromethyl)- 6-chromonylmethyl carbamate (Tcroc), m-nitrophenyl carbamate, 3,5-dimethoxybenzyl carbamate, o-nitrobenzyl carbamate, 3,4-dimethoxy-6-nitrobenzyl carbamate, phenyl(o- nitrophenyl)methyl carbamate, t-amyl carbamate, S-benzyl thiocarbamate, p-cyanobenzyl carbamate, cyclobutyl carbamate, cyclohexyl carbamate, cyclopentyl carbamate, cyclopropylmethyl carbamate, p-decyloxybenzyl carbamate, 2,2-dimethoxyacylvinyl carbamate, o-(N,N-dimethylcarboxamido)benzyl carbamate, l,l-dimethyl-3-(N,N- dimethylcarboxamido)propyl carbamate, 1,1-dimethylpropynyl carbamate, di(2- pyridyl)methyl carbamate, 2-furanylmethyl carbamate, 2-iodoethyl carbamate, isoborynl carbamate, isobutyl carbamate, isonicotinyl carbamate, p-(p’-methoxyphenylazo)benzyl carbamate, 1-methylcyclobutyl carbamate, 1 -methylcyclohexyl carbamate, 1-methyl-l- cyclopropylmethyl carbamate, l-methyl-l(3,5-dimethoxyphenyl)ethyl carbamate, 1-methyl- l-(p-phenylazophenyl)ethyl carbamate, 1-methyl-l-phenylethyl carbamate, 1- methyl- 1 -(4- pyridyl)ethyl carbamate, phenyl carbamate, p-(phenylazo)benzyl carbamate, 2,4,6-tri-t- butylphenyl carbamate, 4-(trimethylammonium)benzyl carbamate, and 2,4,6-trimethylbenzyl carbamate.

[000466] Nitrogen protecting groups such as sulfonamide groups (e.g., -S(=O)2R ^aa ) include, but are not limited to, p-toluenesulfonamide (Ts), benzenesulfonamide, 2,3,6,- trimethyl-4-methoxybenzenesulfonamide (Mtr), 2,4,6-trimethoxybenzenesulfonamide (Mtb), 2,6-dimethyl-4-methoxybenzenesulfonamide (Pme), 2,3 ,5 ,6-tetramethyl-4- methoxybenzenesulfonamide (Mte), 4-methoxybenzenesulfonamide (Mbs), 2,4,6- trimethylbenzenesulfonamide (Mts), 2,6-dimethoxy-4-methylbenzenesulfonamide (iMds), 2,2,5,7,8-pentamethylchroman-6-sulfonamide (Pmc), methanesulfonamide (Ms), 0- trimethylsilylethanesulfonamide (SES), 9-anthracenesulfonamide, 4-(4’,8’- dimethoxynaphthylmethyl)benzenesulfonamide (DNMBS), benzylsulfonamide, trifluoromethylsulfonamide, and phenacylsulfonamide.

[000467] Other nitrogen protecting groups include, but are not limited to, phenothiazinyl-(10)-acyl derivative, N’-p-toluenesulfonylaminoacyl derivative, N’ - phenylaminothioacyl derivative, N-benzoylphenylalanyl derivative, N-acetylmethionine derivative, 4,5-diphenyl-3-oxazolin-2-one, N-phthalimide, N-dithiasuccinimide (Dts), N-2,3- diphenylmaleimide, N-2,5-dimethylpyrrole, N- 1,1, 4, 4- tetramethyldisilylazacyclopentane adduct (STABASE), 5-substituted l,3-dimethyl-l,3,5-triazacyclohexan-2-one, 5-substituted l,3-dibenzyl-l,3,5-triazacyclohexan-2-one, 1- substituted 3,5-dinitro-4-pyridone, N- methylamine, N-allylamine, N-[2- (trimethylsilyl)ethoxy]methylamine (SEM), N-3- acetoxypropylamine, N-(l-isopropyl-4-nitro-2-oxo-3-pyroolin-3-yl)amine, quaternary ammonium salts, N-benzylamine, N-di(4-methoxyphenyl)methylamine, N-5- dibenzosuberylamine, N-triphenylmethylamine (Tr), N-[(4- methoxyphenyl)diphenylmethyl]amine (MMTr), N-9-phenylfluorenylamine (PhF), N-2,7 - dichloro-9-fluorenylmethyleneamine, N-ferrocenylmethylamino (Fem), N-2- picolylamino N’ -oxide, N- 1,1 -dimethylthiomethyleneamine, N-benzylideneamine, N-p- methoxybenzylideneamine, N-diphenylmethyleneamine, N-[(2- pyridyl)mesityl]methyleneamine, N-(N’ ,N’-dimethylaminomethylene)amine, N,N’ - isopropylidenediamine, N-p-nitrobenzylideneamine, N-salicylideneamine, N-5- chlorosalicylideneamine, N-(5-chloro-2-hydroxyphenyl)phenylmethyleneamine, N- cyclohexylideneamine, N-(5,5-dimethyl-3-oxo-l-cyclohexenyl)amine, N-borane derivative, N-diphenylborinic acid derivative, N-[phenyl(pentaacylchromium- or tungsten)acyl]amine, N-copper chelate, N-zinc chelate, N-nitroamine, N-nitrosoamine, amine N-oxide, diphenylphosphinamide (Dpp), dimethylthiophosphinamide (Mpt), diphenylthiophosphinamide (Ppt), dialkyl phosphoramidates, dibenzyl phosphoramidate, diphenyl phosphoramidate, benzenesulfenamide, o-nitrobenzenesulfenamide (Nps), 2,4- dinitrobenzenesulfenamide, pentachlorobenzenesulfenamide, 2-nitro-4- methoxybenzenesulfenamide, triphenylmethylsulfenamide, and 3-nitropyridinesulfenamide (Npys).

[000468] In certain embodiments, the substituent present on an oxygen atom is an oxygen protecting group (also referred to as a hydroxyl protecting group). Oxygen protecting groups are well known in the art and include those described in detail in Protecting Groups in Organic Synthesis, T. W. Greene and P. G. M. Wuts, 3rd edition, John Wiley & Sons, 1999, incorporated herein by reference.

[000469] Exemplary oxygen protecting groups include, but are not limited to, methyl, methoxylmethyl (MOM), methylthiomethyl (MTM), t-butylthiomethyl, (phenyldimethylsilyl)methoxymethyl (SMOM), benzyloxymethyl (BOM), p- methoxybenzyloxymethyl (PMBM), (4-methoxyphenoxy)methyl (p-AOM), guaiacolmethyl (GUM), t-butoxymethyl, 4-pentenyloxymethyl (POM), siloxymethyl, 2- methoxyethoxymethyl (MEM), 2,2,2-trichloroethoxymethyl, bis(2-chloroethoxy)methyl, 2- (trimethylsilyl)ethoxymethyl (SEMOR), tetrahydropyranyl (THP), 3- bromotetrahydropyranyl, tetrahydrothiopyranyl, 1-methoxycyclohexyl, 4- methoxytetrahydropyranyl (MTHP), 4-methoxytetrahydrothiopyranyl, 4- methoxytetrahydrothiopyranyl S ,S -dioxide, 1 - [(2-chloro-4-methyl)phenyl] -4- methoxypiperidin-4-yl (CTMP), l,4-dioxan-2-yl, tetrahydrofuranyl, tetrahydrothiofuranyl, 2,3,3a,4,5,6,7,7a-octahydro-7,8,8-trimethyl-4,7-methanobenzo furan-2-yl, 1 -ethoxy ethyl, 1- (2-chloroethoxy)ethyl, 1-methyl-l-methoxy ethyl, 1 -methyl- 1 -benzyloxy ethyl, 1 -methyl- 1- benzyloxy-2-fluoroethyl, 2,2,2-trichloroethyl, 2-trimethylsilylethyl, 2- (phenylselenyl)ethyl, t-butyl, allyl, p-chlorophenyl, p-methoxyphenyl, 2,4-dinitrophenyl, benzyl (Bn), p- methoxybenzyl, 3,4-dimethoxybenzyl, o-nitrobenzyl, p-nitrobenzyl, p-halobenzyl, 2,6- dichlorobenzyl, p-cyanobenzyl, p-phenylbenzyl, 2-picolyl, 4-picolyl, 3- methyl-2-picolyl N- oxido, diphenylmethyl, p,p’-dinitrobenzhydryl, 5-dibenzosuberyl, triphenylmethyl, a- naphthyldiphenylmethyl, p-methoxyphenyldiphenylmethyl, di(p- methoxyphenyl)phenylmethyl, tri(p-methoxyphenyl)methyl, 4-(4’- bromophenacyloxyphenyl)diphenylmethyl, 4,4’ ,4”-tris(4,5- dichlorophthalimidophenyl)methyl, 4,4’ ,4”-tris(levulinoyloxyphenyl)methyl, 4,4’ ,4”- tris(benzoyloxyphenyl)methyl, 3-(imidazol-l-yl)bis(4’,4”-dimethoxyphenyl)methyl, 1,1- bis(4-methoxyphenyl)-l’-pyrenylmethyl, 9-anthryl, 9-(9-phenyl)xanthenyl, 9-(9-phenyl-10- oxo)anthryl, l,3-benzodisulfuran-2-yl, benzisothiazolyl S,S-dioxido, trimethylsilyl (TMS), triethylsilyl (TES), triisopropylsilyl (TIPS), dimethylisopropylsilyl (IPDMS), diethylisopropylsilyl (DEIPS), dimethylthexylsilyl, t-butyldimethylsilyl (TBDMS), t- butyldiphenylsilyl (TBDPS), tribenzylsilyl, tri-p-xylylsilyl, triphenylsilyl, diphenylmethylsilyl (DPMS), t-butylmethoxyphenylsilyl (TBMPS), formate, benzoylformate, acetate, chloroacetate, dichloroacetate, trichloroacetate, trifluoroacetate, methoxyacetate, triphenylmethoxy acetate, phenoxyacetate, p-chlorophenoxyacetate, 3- phenylpropionate, 4- oxopentanoate (levulinate), 4,4-(ethylenedithio)pentanoate (levulinoyldithioacetal), pivaloate, adamantoate, crotonate, 4-methoxycrotonate, benzoate, p-phenylbenzoate, 2,4,6- trimethylbenzoate (mesitoate), alkyl methyl carbonate, 9- fluorenylmethyl carbonate (Fmoc), alkyl ethyl carbonate, alkyl 2,2,2-trichloroethyl carbonate (Troc), 2-(trimethylsilyl)ethyl carbonate (TMSEC), 2-(phenylsulfonyl) ethyl carbonate (Psec), 2-(triphenylphosphonio) ethyl carbonate (Peoc), alkyl isobutyl carbonate, alkyl vinyl carbonate alkyl allyl carbonate, alkyl p-nitrophenyl carbonate, alkyl benzyl carbonate, alkyl p-methoxybenzyl carbonate, alkyl 3,4-dimethoxybenzyl carbonate, alkyl o-nitrobenzyl carbonate, alkyl p-nitrobenzyl carbonate, alkyl S -benzyl thiocarbonate, 4-ethoxy-l-napththyl carbonate, methyl dithiocarbonate, 2-iodobenzoate, 4-azidobutyrate, 4-nitro-4-methylpentanoate, o- (dibromomethyl)benzoate, 2-formylbenzenesulfonate, 2-(methylthiomethoxy)ethyl, 4- (methylthiomethoxy)butyrate, 2- (methylthiomethoxymethyl)benzoate, 2,6-dichloro-4- methylphenoxyacetate, 2,6-dichloro-4-(l ,1 ,3,3-tetramethylbutyl)phenoxyacetate, 2,4-bis( 1 , 1 - dimethylpropyl)phenoxyacetate, chlorodiphenylacetate, isobutyrate, monosuccinoate, (E)-2- methyl-2-butenoate, o-(methoxyacyl)benzoate, a-naphthoate, nitrate, alkyl N,N,N’,N’- tetramethylphosphorodiamidate, alkyl N-phenylcarbamate, borate, dimethylphosphinothioyl, alkyl 2,4-dinitrophenylsulfenate, sulfate, methanesulfonate (mesylate), benzylsulfonate, and tosylate (Ts).

[000470] In certain embodiments, the substituent present on a sulfur atom is a sulfur protecting group (also referred to as a thiol protecting group). Sulfur protecting groups are well known in the art and include those described in detail in Protecting Groups in Organic Synthesis, T. W. Greene and P. G. M. Wuts, 3rd edition, John Wiley & Sons, 1999, incorporated herein by reference.

[000471] Exemplary sulfur protecting groups include, but are not limited to, alkyl, benzyl, p-methoxybenzyl, 2,4,6-trimethylbenzyl, 2,4,6-trimethoxybenzyl, o-hydroxybenzyl, p-hydroxybenzyl, o-acetoxybenzyl, p-acetoxybenzyl, p-nitrobenzyl, 4-picolyl, 2- quinolinylmethyl, 2-picolyl N-oxido, 9-anthrylmethyl, 9-fluorenylmethyl, xanthenyl, ferrocenylmethyl, diphenylmethyl, bis(4-methoxyphenyl)methyl, 5-dibenzosuberyl, triphenylmethyl, diphenyl-4-pyridylmethyl, phenyl, 2,4-dinitrophenyl, t-butyl, 1-adamantyl, methoxymethyl (MOM), isobutoxy methyl, benzyloxymethyl, 2-tetrahydropyranyl, benzylthiomethyl, phenylthiomethyl, thiazolidino, acetamidomethyl, trimethylacetamidomethyl, benzamidomethyl, allyloxycarbonylaminomethyl, phenylacetamidomethyl, phthalimidomethyl, acetylmethyl, carboxymethyl, cyanomethyl, (2- nitro-l-phenyl)ethyl, 2-(2,4-dinitrophenyl)ethyl, 2-cyanoethyl, 2-(Trimethylsilyl)ethyl, 2,2- bis(carboethoxy)ethyl, (l-m-nitrophenyl-2-benzoyl)othyl, 2-phenylsulfonylethyl, 2-(4- methylphenylsulfonyl)-2-methylprop-2-yl, acetyl, benzoyl, trifluoroacetyl, N-[[(p- biphenylyl)isopropoxy]carbonyl]-N-methyl]- y- amino thiobutyrate, 2,2,2- trichloroethoxycarbonyl, t-butoxycarbonyl, benzyloxycarbonyl, p- methoxybenzyloxycarbonyl, N-ethyl, N-methoxymethyl, sulfonate, sulfenylthiocarbonate, 3- nitro-2-pyridinesulfenyl sulfide, oxathiolone.

[000472] In an embodiment, optionally substituted heteroalkyl is unsubstituted or is substituted with one or more substituents independently selected from -CONH2, -CO2H, - COCH2NH2, -NH2, -NH(C=NH)NH2, or =0 (i.e., two geminal hydrogens on a carbon atom of the heteroalkyl are replaced with the group =0). In an embodiment, optionally substituted heteroalkyl is unsubstituted. In an embodiment, optionally substituted heteroalkyl is substituted with one or more substituents independently selected from -CONH2, -CO2H, - COCH2NH2, -NH2, -NH(C=NH)NH2, or =0 (i.e., two geminal hydrogens on a carbon atom of the heteroalkyl are replaced with the group =0).

III. COMPOUNDS

[000473] The present invention relates to novel cyclic peptide inhibitors of the interleukin-23 receptor (IL-23R) or pharmaceutically acceptable salts, solvates, or forms thereof.

[000474] In particular, the present invention relates to a cyclic peptide inhibitors of the interleukin-23 receptor (IL-23R) or a pharmaceutically acceptable salt thereof, including those for which a structure is as identified in Table 1A, Table IB, Table 1C, Table ID, or Table IF of the present specification.

[000475] In one aspect, a cyclic peptide inhibitor compound of the interleukin-23 receptor (IL-23R) compound, or a pharmaceutically acceptable salt thereof, has a structure of a compound in Table 1A.

[000476] In another aspect, a cyclic peptide inhibitor compound of the interleukin-23 receptor (IL-23R) compound or a pharmaceutically acceptable salt thereof, has a structure of a compound in Table IB.

[000477] In another aspect, a cyclic peptide inhibitor compound of the interleukin-23 receptor (IL-23R) compound or a pharmaceutically acceptable salt thereof, has a structure of a compound in Table 1C.

[000478] In another aspect, a cyclic peptide inhibitor compound of the interleukin-23 receptor (IL-23R) compound or a pharmaceutically acceptable salt thereof, has a structure of a compound in Table ID.

[000479] In another aspect, a cyclic peptide inhibitor compound of the interleukin-23 receptor (IL-23R) compound or a pharmaceutically acceptable salt thereof, has a structure of a compound in Table IE.

[000480] In another aspect, a cyclic peptide inhibitor compound of the interleukin-23 receptor (IL-23R) compound or a pharmaceutically acceptable salt thereof, has a structure of a compound in Table IF. Table 1A. Compounds

Table IB. Compounds

Table 1C. Compounds

Table ID. Compounds

Table IE. Compounds

Table IF. Compounds

• SYNTHESIS

[000481] The compounds described herein may be synthesized by many techniques that are known to those skilled in the art. In certain aspects, monomer subunits are synthesized and purified using the techniques described in the accompanying Examples. In some aspects, the present invention provides a method of producing a compound (or monomer subunit thereof) of the invention, comprising chemically synthesizing a peptide having an amino acid sequence described herein, including but not limited to any of the amino acid sequences set forth in the compounds of Formula (I) to Formula (VI), Table 1A, Table IB, Table 1C, Table ID, and Table IE herein. In some aspects, a portion of the peptide is recombinantly synthesized, instead of being chemically synthesized. In some aspects, methods of producing a compound further include cyclizing the compound precursor after the constituent subunits have been attached. In particular aspects, cyclization is accomplished via any of the various methods described herein. [000482] Substituted tryptophans may be prepared by any suitable route. Preparation of certain substituted tryptophans including those substituted at the 7 position, such as 7-ethyl- L-tryptophans, are described in, for example WO 2021/146441 Al.

[000483] The present invention further describes synthesis of compounds described herein, such as the compounds of Formulae (I) to (X) and the compounds of Table 1A, Table 1A, Table IB, Table 1C, Table ID, and Table IE. In some aspects, one or more of the amino acid residues or amino acid monomers are lipidated and then covalently attached to one another to form a compound of the invention. In some aspects, one or more of the amino acid residues or amino acid monomers are covalently attached to one another and lipidated at an intermediate oligomer stage before attaching additional amino acids and cyclization to form a compound of the invention. In some aspects, a cyclic peptide is synthesized and then lipidated to form a compound of the invention. Illustrative synthetic methods are described in the Examples.

[000484] The present invention further describes synthesis of compounds described herein, such as the compounds of Formulae (I) to Formula (X), and the compounds of Table 1A, Table IB, Table 1C, Table ID, and Table IE. Illustrative synthetic methods are described in the Examples.

IV. PHARMACEUTICAL COMPOSITIONS

[000485] The present invention relates to pharmaceutical composition which comprise an IL-23R inhibitor of the present invention. The present invention includes pharmaceutical compositions comprising one or more inhibitors of the present invention and a pharmaceutically acceptable carrier, diluent or excipient. The pharmaceutically acceptable carrier, diluent or excipient may be a solid, semi-solid or liquid filler, diluent, encapsulating material or formulation auxiliary of any type. Prevention of the action of microorganisms may be ensured by the inclusion of various antibacterial and antifungal agents, for example, paraben, chlorobutanol, phenol sorbic acid, and the like. It may also be desirable to include isotonic agents such as sugars, sodium chloride, and the like.

[000486] The pharmaceutical compositions may be administered orally, parenterally, intracisternally, intravaginally, intraperitoneally, intrarectally, topically (as by powders, ointments, drops, suppository, or transdermal patch), by inhalation (such as intranasal spray), ocularly (such as intraocularly) or buccally. The term “parenteral” as used herein refers to modes of administration which include intravenous, intramuscular, intraperitoneal, intrasternal, subcutaneous, intradermal and intraarticular injection and infusion. Accordingly, in certain embodiments, the compositions are formulated for delivery by any of these routes of administration. A pharmaceutical composition may be formulated for and administered orally. A pharmaceutical composition may be formulated for and administered parenterally.

[000487] In a particular aspect, an IL-23R inhibitor of the present invention, is suspended in a sustained-release matrix. A sustained-release matrix, as used herein, is a matrix made of materials, usually polymers, which are degradable by enzymatic or acid-base hydrolysis or by dissolution. Once inserted into the body, the matrix is acted upon by enzymes and body fluids. A sustained-release matrix desirably is chosen from biocompatible materials such as liposomes, polylactides (polylactic acid), polyglycolide (polymer of glycolic acid), polylactide co-glycolide (copolymers of lactic acid and glycolic acid) polyanhydrides, poly(ortho)esters, polypeptides, hyaluronic acid, collagen, chondroitin sulfate, carboxylic acids, fatty acids, phospholipids, polysaccharides, nucleic acids, polyamino acids, amino acids such as phenylalanine, tyrosine, isoleucine, polynucleotides, polyvinyl propylene, polyvinylpyrrolidone and silicone. One embodiment of a biodegradable matrix is a matrix of one of either polylactide, polyglycolide, or polylactide co-glycolide (copolymers of lactic acid and glycolic acid).

[000488] The IL-23R inhibitors of the present invention may be prepared and/or formulated as pharmaceutically acceptable salts or when appropriate in neutral form. Pharmaceutically acceptable salts are non-toxic salts of a neutral form of a compound that possess the desired pharmacological activity of the neutral form. These salts may be derived from inorganic or organic acids or bases. For example, a compound that contains a basic nitrogen may be prepared as a pharmaceutically acceptable salt by contacting the compound with an inorganic or organic acid. Non-limiting examples of pharmaceutically acceptable salts include sulfates, pyrosulfates, bisulfates, sulfites, bisulfites, phosphates, monohydrogenphosphates, dihydrogenphosphates, metaphosphates, pyrophosphates, chlorides, bromides, iodides, acetates, propionates, decanoates, caprylates, acrylates, formates, isobutyrates, caproates, heptanoates, propiolates, oxalates, malonates, succinates, suberates, sebacates, fumarates, maleates, butyne- 1,4-dioates, hexyne-l,6-dioates, benzoates, chlorobenzoates, methylbenzoates, dinitrobenzoates, hydroxybenzoates, methoxybenzoates, phthalates, sulfonates, methylsulfonates, propylsulfonates, besylates, xylenesulfonates, naphthalene- 1- sulfonates, naphthalene-2-sulfonates, phenylacetates, phenylpropionates, phenylbutyrates, citrates, lactates, y-hydroxybutyrates, glycolates, tartrates, and mandelates. Lists of other suitable pharmaceutically acceptable salts are found in Remington: The Science and Practice of Pharmacy, 21 ^st Edition, Lippincott Wiliams and Wilkins, Philadelphia, Pa., 2006.

[000489] Examples of “pharmaceutically acceptable salts” of the compounds disclosed herein also include salts derived from an appropriate base, such as an alkali metal (for example, sodium, potassium), an alkaline earth metal (for example, magnesium), ammonium and NX? (wherein X is C1-C4 alkyl). Also included are base addition salts, such as sodium or potassium salts. Those skilled in the art will recognize that while quaternary amonium salts may be incorporated into the structure of the compound of Formula (I) - (VI), remaining basic residues may be combined with an acid form additional salt sites. Thus, a compound of Formula (I) - (VI) of the present invention may encompass quarternary ammonium salts at certain positions, but also acid addition salts at any basic site on the molecule.

[000490] The pesent invention relates to pharmaceutical compositions comprising an IL-23R inhibitor of the present invention or pharmaceutically acceptable salts, isomers, or a mixture thereof, in which from 1 to n hydrogen atoms attached to a carbon atom may be replaced by a deuterium atom or D, in which n is the number of hydrogen atoms in the molecule. As known in the art, the deuterium atom is a non-radioactive isotope of the hydrogen atom. Such compounds may increase resistance to metabolism, and thus may be useful for increasing the half-life of the compounds described herein or pharmaceutically acceptable salts, isomer, or a mixture thereof when administered to a mammal. See, e.g., Foster, “Deuterium Isotope Effects in Studies of Drug Metabolism,” Trends Pharmacol. Sci., 5( 12):524-527 (1984). Such compounds are synthesized by means well known in the art, for example by employing starting materials in which one or more hydrogen atoms have been replaced by deuterium.

[000491] Examples of isotopes that can be incorporated into the disclosed compounds also include isotopes of hydrogen, carbon, nitrogen, oxygen, phosphorous, fluorine, chlorine, and iodine, such as ² H, ³ H, ⁿ C, ¹³ C, ¹⁴ C, ¹³ N, ¹⁵ N, ¹⁵ 0, ¹⁷ 0, ¹⁸ 0, ³¹ P, ³² P, ³⁵ S, ¹⁸ F, ³⁶ C1, ¹²³ I, and ¹²⁵ I, respectively. Substitution with positron emitting isotopes, such as ⁿ C, ¹⁸ F, ¹⁵ O and ¹³ N, can be useful in Positron Emission Topography (PET) studies for examining substrate receptor occupancy. Isotopically-labeled compounds of Formula (I), can generally be prepared by conventional techniques known to those skilled in the art or by processes analogous to those described in the Examples as set out below using an appropriate isotopically-labeled reagent in place of the non-labeled reagent previously employed.

[000492] In certain aspects, pharmaceutical compositions for parenteral injection comprise pharmaceutically acceptable sterile aqueous or nonaqueous solutions, dispersions, suspensions or emulsions, or sterile powders, for reconstitution into sterile injectable solutions or dispersions just prior to use. Examples of suitable aqueous and nonaqueous carriers, diluents, solvents or vehicles include water, ethanol, polyols (such as glycerol, propylene glycol, polyethylene glycol, and the like), carboxymethylcellulose and suitable mixtures thereof, 0-cyclodextrin, vegetable oils (such as olive oil), and injectable organic esters such as ethyl oleate. Proper fluidity may be maintained, for example, by the use of coating materials such as lecithin, by the maintenance of the required particle size in the case of dispersions, and by the use of surfactants. These compositions may also contain adjuvants such as preservative, wetting agents, emulsifying agents, and dispersing agents. Prolonged absorption of an injectable pharmaceutical form may be brought about by the inclusion of agents which delay absorption, such as aluminum monostearate and gelatin.

[000493] Injectable depot forms include those made by forming microencapsulated matrices of the peptide inhibitor in one or more biodegradable polymers such as polylactidepolyglycolide, poly (orthoesters), poly(anhydrides), and (poly)glycols, such as PEG. Depending upon the ratio of peptide to polymer and the nature of the particular polymer employed, the rate of release of the peptide inhibitor can be controlled. Depot injectable formulations are also prepared by entrapping the peptide inhibitor in liposomes or microemulsions compatible with body tissues.

[000494] The injectable formulations may be sterilized, for example, by filtration through a bacterial-retaining filter, or by incorporating sterilizing agents in the form of sterile solid compositions which can be dissolved or dispersed in sterile water or other sterile injectable medium just prior to use.

[000495] Topical administration includes administration to the skin or mucosa, including surfaces of the lung and eye. Compositions for topical lung administration, including those for inhalation and intranasal, may involve solutions and suspensions in aqueous and non-aqueous formulations and can be prepared as a dry powder which may be pressurized or non-pressurized. In non-pressurized powder compositions, the active ingredient may be finely divided form may be used in admixture with a larger-sized pharmaceutically acceptable inert carrier comprising particles having a size, for example, of up to 100 micrometers in diameter. Suitable inert carriers include sugars such as lactose.

[000496] Alternatively, a pharmaceutical composition of the present invention may be pressurized and contain a compressed gas, such as nitrogen or a liquefied gas propellant. The liquefied propellant medium and indeed the total composition may be such that the active ingredient does not dissolve therein to any substantial extent. The pressurized composition may also contain a surface active agent, such as a liquid or solid non-ionic surface active agent or may be a solid anionic surface active agent. It is preferred to use the solid anionic surface active agent in the form of a sodium salt.

[000497] A further form of topical administration is to the eye. A peptide inhibitor of the present invention may be delivered in a pharmaceutically acceptable ophthalmic vehicle, such that the peptide inhibitor is maintained in contact with the ocular surface for a sufficient time period to allow the peptide inhibitor to penetrate the comeal and internal regions of the eye, as for example the anterior chamber, posterior chamber, vitreous body, aqueous humor, vitreous humor, cornea, iris/ciliary, lens, choroid/retina and sclera. The pharmaceutically acceptable ophthalmic vehicle may, for example, be an ointment, vegetable oil or an encapsulating material. Alternatively, the peptide inhibitors of the invention may be injected directly into the vitreous and aqueous humor.

[000498] Compositions for rectal or vaginal administration include suppositories which may be prepared by mixing the peptide inhibitors of this invention with suitable non-irritating excipients or carriers such as cocoa butter, polyethylene glycol or a suppository wax, which are solid at room temperature but liquid at body temperature and, therefore, melt in the rectum or vaginal cavity and release the active compound.

[000499] Peptide inhibitors of the present invention may also be administered in liposomes or other lipid-based carriers. As is known in the art, liposomes are generally derived from phospholipids or other lipid substances. Liposomes are formed by mono- or multi-lamellar hydrated liquid crystals that are dispersed in an aqueous medium. Any nontoxic, physiologically acceptable and metabolizable lipid capable of forming liposomes can be used. The present compositions in liposome form can contain, in addition to a peptide inhibitor of the present invention, stabilizers, preservatives, excipients, and the like. In certain embodiments, the lipids comprise phospholipids, including the phosphatidyl cholines (lecithins) and serines, both natural and synthetic. Methods to form liposomes are known in the art.

[000500] Pharmaceutical compositions suitable for parenteral administration in a method or use described herein may comprise sterile aqueous solutions and/or suspensions of the IL:-23R inhibitors made isotonic with the blood of the recipient, generally using sodium chloride, glycerin, glucose, mannitol, sorbitol, and the like.

[000501] The present invention provides a pharmaceutical composition for oral delivery. Compositions and peptide inhibitors of the present invention may be prepared for oral administration according to any of the methods, techniques, and/or delivery vehicles described herein. Further, one having skill in the art will appreciate that the peptide inhibitors of the instant invention may be modified or integrated into a system or delivery vehicle that is not disclosed herein, yet is well known in the art and compatible for use in oral delivery of peptides.

[000502] Formulations for oral administration may comprise adjuvants (e.g. resorcinols and/or nonionic surfactants such as polyoxyethylene oleyl ether and n- ether) to artificially increase the permeability of the intestinal walls, and/or enzymatic inhibitors (e.g. pancreatic trypsin inhibitors, diisopropylfluorophosphate (DFF) or trasylol) to inhibit enzymatic degradation. In certain embodiments, the peptide inhibitor of a solid-type dosage form for oral administration can be mixed with at least one additive, such as sucrose, lactose, cellulose, mannitol, trehalose, raffinose, maltitol, dextran, starches, agar, alginates, chitins, chitosans, pectins, gum tragacanth, gum arabic, gelatin, collagen, casein, albumin, synthetic or semisynthetic polymer, or glyceride. These formulations for oral administration can also contain other type(s) of additives, e.g., inactive diluting agent, lubricant such as magnesium stearate, paraben, preserving agent such as sorbic acid, ascorbic acid, alpha-tocopherol, antioxidants such as cysteine, disintegrators, binders, thickeners, buffering agents, pH adjusting agents, sweetening agents, flavoring agents or perfuming agents.

[000503] In particular aspects, oral dosage forms or unit doses compatible for use with the peptide inhibitors of the present invention may include a mixture of peptide inhibitor and nondrug components or excipients, as well as other non-reusable materials that may be considered either as an ingredient or packaging. Oral compositions may include at least one of a liquid, a solid, and a semi-solid dosage forms. In some embodiments, an oral dosage form is provided comprising an effective amount of peptide inhibitor, wherein the dosage form comprises at least one of a pill, a tablet, a capsule, a gel, a paste, a drink, a syrup, ointment, and suppository. In some instances, an oral dosage form is provided that is designed and configured to achieve delayed release of the peptide inhibitor in the subject’s small intestine and/or colon.

[000504] Tablets may contain excipients, glidants, fillers, binders and the like. Aqueous compositions are prepared in sterile form, and when intended for delivery by other than oral administration generally will be isotonic. Compositions may optionally contain excipients such as those set forth in the “Handbook of Pharmaceutical Excipients” (1986). Excipients include ascorbic acid and other antioxidants, chelating agents such as EDTA, carbohydrates such as dextran, hydroxyalkylcellulose, hydroxyalkylmethylcellulose, stearic acid and the like. The pH of the compositions ranges from, for example, about 3 to about 11. The pH of the compositions may, for example, range from about 5 to about 7 or from about 7 to about 10.

[000505] An oral pharmaceutical composition of the present invention may comprise an IL-23R inhibitor of the present invention may comprise an enteric coating that is designed to delay release of the IL-23R inhibitor in the small intestine. The invention relates to a pharmaceutical composition that comprises an IL-23R inhibitor of the present invention and a protease inhibitor, such as aprotinin, in a delayed release pharmaceutical formulation. Pharmaceutical compositions (e.g., oral pharmaceutical compositions) may comprise an enteric coat that is soluble in gastric juice at a pH of about 5.0 or higher. Such enteric coatings may comprise a polymer having dissociable carboxylic groups, such as derivatives of cellulose, including hydroxypropylmethyl cellulose phthalate, cellulose acetate phthalate and cellulose acetate trimellitate and similar derivatives of cellulose and other carbohydrate polymers.

[000506] An oral pharmaceutical composition comprising an IL-23R inhibitor of the present invention that comprises an IL-23R inhibitor may comprise an enteric coating that is designed to protect and release the pharmaceutical composition in a controlled manner within the subject’s lower gastrointestinal system, and to avoid systemic side effects. In addition to enteric coatings, the peptide inhibitors of the instant invention may be encapsulated, coated, engaged or otherwise associated within any compatible oral drug delivery system or component. For example, in some embodiments an IL-23R inhibitor of the present invention is provided in a lipid carrier system comprising at least one of polymeric hydrogels, nanoparticles, microspheres, micelles, and other lipid systems.

[000507] To overcome peptide degradation of an IL-23R inhibitor of the present invention in the small intestine, the pharmaceutical compositions may comprise a hydrogel polymer carrier system in which a peptide inhibitor of the present invention is contained, whereby the hydrogel polymer protects the IL-23R inhibitor from proteolysis in the small intestine and/or colon. The an IL-23R inhibitor may further be formulated for compatible use with a carrier system that is designed to increase the dissolution kinetics and enhance intestinal absorption of the peptide. These methods include the use of liposomes, micelles and nanoparticles to increase GI tract permeation of peptides.

[000508] Various bioresponsive systems may also be combined with one or more an IL- 23R inhibitors of the present invention to provide a pharmaceutical agent for oral delivery. For example, an IL-23R inhibitor of the present invention may be used in combination with a bioresponsive system, such as hydrogels and mucoadhesive polymers with hydrogen bonding groups (e.g., PEG, poly(methacrylic) acid [PMAA], cellulose, Eudragit®, chitosan and alginate) to provide a therapeutic agent for oral administration.

[000509] In certain aspects, pharmaceutical composition and formulations may include an IL-23R inhibitor of the present invention and one or more absorption enhancers, enzyme inhibitors, or mucoso adhesive polymers. In an embodiment, the absorption enhancer may be an intestinal permeation enhancer.

[000510] IL-23R inhibitors of the present invention may be formulated in a formulation vehicle, such as, e.g., emulsions, liposomes, microsphere or nanoparticles.

[000511] The present invention provides for a method for treating a subject with an IL- 23R inhibitor of the present invention having an increased half-life. In one aspect, the present invention provides a peptide inhibitor having a half-life of at least several hours to one day in vitro or in vivo (e.g., when administered to a human subject) sufficient for daily (q.d.) or twice daily (b.i.d.) dosing of a therapeutically effective amount. In certain embodiments, the IL-23R inhibitor has a half-life of three days or longer sufficient for weekly (q.w.) dosing of a therapeutically effective amount. In certain embodiments, the IL-23R inhibitor has a half-life of eight days or longer sufficient for bi-weekly (b.i.w.) or monthly dosing of a therapeutically effective amount. In certain embodiments, the IL-23R inhibitor is derivatized or modified such that is has a longer half-life as compared to the underivatized or unmodified peptide inhibitor. In certain embodiments, the IL-23R inhibitor contains one or more chemical modifications to increase serum half-life.

[000512] When used in at least one of the treatments or delivery systems described herein, a peptide inhibitor of the present invention may be employed in pure form or, where such forms exist, in pharmaceutically acceptable salt form.

[000513] The total daily usage of the IL-23R inhibitor and compositions of the present invention can be decided by the attending physician within the scope of sound medical judgment. The specific therapeutically effective dose level for any particular subject will depend upon a variety of factors including: a) the disorder being treated and the severity of the disorder; b) activity of the specific compound employed; c) the specific composition employed, the age, body weight, general health, sex and diet of the patient; d) the time of administration, route of administration, and rate of excretion of the specific peptide inhibitor employed; e) the duration of the treatment; f) drugs used in combination or coincidental with the specific peptide inhibitor employed, and like factors well known in the medical arts.

[000514] In particular embodiments, the total daily dose of a IL-23R inhibitor of the present invention to be administered to a human or other mammal host in single or divided doses may be in amounts, for example, from 0.0001 to 300 mg/kg body weight daily or 1 to 300 mg/kg body weight daily.

[000515] The compositions may conveniently be presented in unit dosage form and can be prepared by any of the methods well known in the art of pharmacy. Techniques and compositions generally are foud in Remington's Pharmaceutical Sciences (Mack Publishing Co., Easton, PA). Such methods include the step of bringing into association the active ingredient with the carrier which constitutes one or more accessory ingredients. In general the compositions are prepared by uniformly and intimately bringing into association the active ingredient with liquid carriers or finely divided solid carriers or both, and then, if necessary, shaping the product.

[000516] Compositions suitable for oral administration can be presented as discrete units such as capsules, cachets or tablets each containing a predetermined amount of the active ingredient; as a powder or granules; as a solution or a suspension in an aqueous or nonaqueous liquid; or as an oil-in-water liquid emulsion or a water-in-oil liquid emulsion. The active ingredient may also be administered as a bolus, electuary or paste. The active ingredient may also be administered as a buccal or sublingual formulation. Buccal or sublingual formulations may comprise an active ingredient in a matrix that releases the active ingredient for transport across the buccal and/or sublingual membranes. The buccal or sublingual formulation may further include a rate controlling matrix that releases the active compounds at a predetermined rate for transport across the buccal and/or sublingual membranes. The buccal or sublingual formulation may further include one or more compounds selected from the group consisting of (i) taste masking agents, (ii) enhancers, (iii) complexing agents, and mixtures thereof; and (iv) other pharmaceutically acceptable carriers and/or excipients. The enhancer may be a permeation enhancer.

[000517] A tablet is made by compression or molding, optionally with one or more accessory ingredients. Compressed tablets can be prepared by compressing in a suitable machine the active ingredient in a free-flowing form such as a powder or granules, optionally mixed with a binder, lubricant, inert diluent, preservative, surface active or dispersing agent. Molded tablets may be made by molding in a suitable machine a mixture of the powdered active ingredient moistened with an inert liquid diluent. The tablets can optionally be coated or scored and optionally are formulated so as to provide slow or controlled release of the active ingredient therefrom.

V. NON-INVASIVE DETECTION OF INTESTINAL INFLAMMATION

[000518] The IL-23R inhibitors of the present invention may be used for detection, assessment and diagnosis of intestinal inflammation by microPET imaging, wherein the peptide inhibitor is labeled with a chelating group or a detectable label, as part of a non- invasive diagnostic procedure. In certain embodiments, an IL-23R inhibitor of the present invention is conjugated with a bifunctional chelator. In certain embodiments, an IL-23R inhibitor of the present invention is radiolabeled. The labeled an IL-23R inhibitor is then administered to a subject orally or rectally. In certain embodiments, the IL-23R inhibitor is included in drinking water. Following uptake of the IL-23R inhibitor, microPET imaging may be used to visualize inflammation throughout the subject’s bowels and digestive track.

VI. METHODS OF TREATMENTS AND/OR USES

[000519] The present invention relates to methods for treating a subject afflicted with a condition or indication associated with IL-23 or IL-23R (e.g., activation of the IL-23/IL-23R signaling pathway), wherein the method comprises administering to the subject an IL-23R inhibitor disclosed herein. A In one aspect, the present invention relates to a method for treating a subject afflicted with a condition or indication characterized by inappropriate, deregulated, or increased IL-23 or IL-23R activity or signaling, comprising administering to the individual a peptide inhibitor of the present invention in an amount sufficient to inhibit (partially or fully) binding of IL-23 to an IL-23R in the subject. The inhibition of IL-23 binding to IL-23R may occur in particular organs or tissues of the subject, e.g., the stomach, small intestine, large intestine/colon, intestinal mucosa, lamina propria, Peyer’s Patches, mesenteric lymph nodes, or lymphatic ducts.

[000520] The present invention relates to methods comprising providing a peptide inhibitor described herein to a subject in need thereof. The subject in need thereof may be a subject that has been diagnosed with or has been determined to be at risk of developing a disease or disorder associated with IL-23/IL-23R. The subject may be a mammal. The subject may be, in particular, a human.

[000521] The disease or disorder to be treated by treatment with an IL-23R inhibitor of the present invention may be autoimmune inflammation and related diseases and disorders, such as multiple sclerosis, asthma, rheumatoid arthritis, inflammation of the gut, inflammatory bowel diseases (IBDs), juvenile IBD, adolescent IBD, Crohn’s disease, ulcerative colitis, sarcoidosis, Systemic Lupus Erythematosus, ankylosing spondylitis (axial spondyloarthritis), psoriatic arthritis, or psoriasis. In particular, the disease or disorder may be psoriasis (e.g., plaque psoriasis, guttate psoriasis, inverse psoriasis, pustular psoriasis, Palmo- Plantar Pustulosis, psoriasis vulgaris, or erythrodermic psoriasis), atopic dermatitis, acne ectopica, ulcerative colitis, Crohn’s disease, Celiac disease (nontropical Sprue), enteropathy associated with seronegative arthropathies, microscopic colitis, collagenous colitis, eosinophilic gastroenteritis/esophagitis, colitis associated with radio- or chemo-therapy, colitis associated with disorders of innate immunity as in leukocyte adhesion deficiency- 1, chronic granulomatous disease, glycogen storage disease type lb, Hermansky-Pudlak syndrome, Chediak-Higashi syndrome, Wiskott-Aldrich Syndrome, pouchitis, pouchitis resulting after proctocolectomy and ileoanal anastomosis, gastrointestinal cancer, pancreatitis, insulin-dependent diabetes mellitus, mastitis, cholecystitis, cholangitis, primary biliary cirrhosis, viral-associated enteropathy, pericholangitis, chronic bronchitis, chronic sinusitis, asthma, uveitis, or graft versus host disease.

[000522] The present invention relates to a method or use of an IL-23R inhibitor for treating an inflammatory disease in a subject that includes administering to the subject a therapeutically effective amount of an IL-23R inhibitor of the present invention or pharmaceutically acceptable solvate or salt thereof, or a composition disclosed herein comprising an IL-23 inhibitor of the present invention. In some aspects, the present invention provides a method of treating an inflammatory disease in a subject that includes administering to the subject a therapeutically effective amount of an IL-23R inhibitor of the present invention or pharmaceutically acceptable solvate or salt thereof, or a composition of the present invention. Suitable inflammatory diseases for treatment with a compound or pharmaceutically acceptable salt thereof, or a composition of the present invention, may include, but are not limited to inflammatory bowel disease (IBD), Crohn’s disease (CD), ulcerative colitis (UC), psoriasis (PsO), or psoriatic arthritis (PsA) and the like. The inflammatory disease to be treated may be inflammatory bowel disease (IBD), Crohn’s disease, or ulcerative colitis. The inflammatory disease to be treated may be selected from psoriasis, or psoriatic arthritis. The inflammatory disease to be treated may be psoriasis The inflammatory disease to be treated may be psoriatic arthritis. The inflammatory disease to be treated may be IBD.

[000523] The present invention relates to methods for treating an inflammatory disease in a subject in need thereof, comprising administering to the subject an IL-23R inhibitor disclosed herein (e.g., a peptide inhibitor or the IL-23R of Formula (I) to Formula (VI) or any of Tables 1A-1E. The inflammatory disease may be IBD, Crohn’s disease, or ulcerative colitis. In aspect, the IBD may be ulcerative colitis. In an aspect, the IBD may be Crohn’s disease. In an aspect, the inflammatory disease may be psoriasis (PsO), or psoriatic arthritis (PsA).

[000524] The present invention relates to methods for treating an inflammatory disease in a subject in need thereof, comprising administering to the subject an IL-23R inhibitor of Formulae I to X) or any of Tables 1 A-1E. The inflammatory disease may be IBD, Crohn’s disease, or ulcerative colitis. In aspect, the IBD may be ulcerative colitis. In an aspect, the IBD may be Crohn’s disease. In an aspect, the inflammatory disease may be psoriasis (PsO), or psoriatic arthritis (PsA).

[000525] The present invention relates to methods for treating an inflammatory disease in a subject in need thereof, comprising administering to the subject an IL-23R inhibitor of Formulae I to X) or any of Tables 1 A-1E. The inflammatory disease may be IBD, Crohn’s disease, or ulcerative colitis. In aspect, the IBD may be ulcerative colitis. In an aspect, the IBD may be Crohn’s disease. In an aspect, the inflammatory disease may be psoriasis (PsO), or psoriatic arthritis (PsA).

[000526] The present invention relates to methods of inhibiting IL-23 binding to an IL- 23R on a cell, comprising contacting the IL-23R with a peptide inhibitor of the receptor disclosed herein. The cell may be a mammalian cell. The method may be performed in vitro or in vivo. Inhibition of binding may be determined by a variety of routine experimental methods and assays known in the art.

[000527] The present invention relates to a method of selectively inhibiting IL-23 or IL- 23R signaling (or the binding of IL-23 to IL-23R) in a subject (e.g., in a subject in need thereof), comprising providing to the subject a peptide inhibitor of the IL-23R described herein. The present invention includes and provides a method of selectively inhibiting IL-23 or IL-23R signaling (or the binding of IL-23 to IL-23R) in the GI tract of a subject (e.g., a subject in need thereof), comprising providing to the subject a peptide inhibitor of the IL-23R of the present invention by oral administration. The exposure of GI tissues (e.g., small intestine or colon) to the administered peptide inhibitor may be at least 10-fold, at least 20- fold, at least 50-fold, or at least 100-fold greater than the exposure (level) in the blood. In particular embodiments, the present invention includes a method of selectively inhibiting IL23 or IL23R signaling (or the binding of IL23 to IL23R) in the GI tract of a subject (e.g., a subject in need thereof), comprising providing to the subject a peptide inhibitor, wherein the peptide inhibitor does not block the interaction between IL- 6 and IL-6R or antagonize the IL- 12 signaling pathway. In a further related embodiment, the present invention includes a method of inhibiting GI inflammation and/or neutrophil infiltration to the GI, comprising providing to a subject in need thereof a peptide inhibitor of the present invention. In some embodiments, methods of the present invention comprise providing a peptide inhibitor of the present invention (i.e., a first therapeutic agent) to a subject (e.g., a subject in need thereof) in combination with a second therapeutic agent. In certain embodiments, the second therapeutic agent is provided to the subject before and/or simultaneously with and/or after the peptide inhibitor is administered to the subject. In particular embodiments, the second therapeutic agent is an anti-inflammatory agent. In certain embodiments, the second therapeutic agent is a non-steroidal anti-inflammatory drug, steroid, or immune modulating agent. In certain embodiments, the method comprises administering to the subject a third therapeutic agent. In certain embodiments, the second therapeutic agent is an antibody that binds IL-23 or IL-23R. [000528] The present invention relates to methods of inhibiting IL-23 signaling by a cell, comprising contacting the IL-23R with a peptide inhibitor described herein. In certain embodiments, the cell is a mammalian cell. In particular embodiments, the method is performed in vitro or in vivo. In particular embodiments, the inhibition of IL-23 signaling may be determined by measuring changes in phospho-STAT3 levels in the cell.

[000529] In any of the foregoing methods, IL-23R inhibitor administration to a subject may be conducted orally, but other routes of administration are not excluded. Other routes of administration include, but are not limited to, parenteral, subcutaneous, intravenous, intramuscular, intraperitoneal, transdermal, topical, buccal or ocular routes. Dosages of a peptide inhibitor or the IL-23R described herein (e.g., a compound of Formulae (I) to (X) or any of Tables 1A-1E), or salt or solvate thereof to be administered to a subject may be determined by a person of skill in the art taking into account the the disease or condition being treated including its severity, and factors including the age weight, sex, and the like. Exemplary dose ranges include, but are not limited to, from about 1 mg to about 1000 mg, or from about 1 mg to about 500 mg, from about 1 mg to about 100 mg, from about 10 mg to about 50 mg, from about 20 mg to about 40 mg, or from about 20 mg to about 30 mg. A dose range of a peptide inhibitor or the IL-23R described herein may be from about 600 mg to about 1000 mg. A dose range of a peptide inhibitor or the IL-23R described herein may be from about 300 mg to about 600 mg. A dose range of a peptide inhibitor or the IL-23R described herein may be from about 5 mg to about 300 mg. A dose range of a peptide inhibitor or the IL-23R described herein may be from about 25 mg to about 150 mg. A dose range of a peptide inhibitor or the IL-23R described herein may be from about 25 mg to about 100 mg. A dose range of a peptide inhibitor or the IL-23R described herein may be present in a dose range of from about 1 mg to about 100 mg. A dose range of a peptide inhibitor or the IL-23R described herein may be present in a dose range of from about 20 mg to about 40 mg. A dose range of a peptide inhibitor or the IL-23R described herein may be present in a dose range of from about 20 mg to about 30 mg.

EXAMPLES

[000530] The following examples illustrate the invention. These examples are not intended to limit the scope of the present invention, but rather to provide guidance to the skilled artisan to prepare and use the compounds, compositions, and methods of the present invention. While particular aspects of the present invention are described, the skilled artisan will appreciate that various changes and modifications can be made without departing from the spirit and scope of the invention.

[000531] Some abbreviations useful in describing the invention are defined below in the following Table 2 A and Table 2B.

Table 2A. Amino Acid Abbreviations

Table 2B. Abbreviations for Substituents, Reagents, and Solvents

Table 2C. Abbreviations for Substituents

Methods of making the cyclic peptides of the present invention

[000532] The cyclic peptides of the present invention can be made by Solid-Phase Peptide Synthesis (SPPS) using Fmoc/t-Bu chemistry and purified according to methods known in the art, e.g. according to the methods in E. Atherton and R.C. Sheppard, Solid Phase Peptide Synthesis: a Practical Approach, IRL Press (Oxford, England (1989)); or Amblard et al. , Methods and Protocols of Modern Solid Phase Peptide Synthesis, Molecular Biotechnology, 2006, Volume 33, 239-254. Amino acid protecting groups that can be used in the synthesis of the BMPR2 cyclic peptides are summarized in Table A; or Isidro-Llobet et al., Amino Acid- Protecting Groups, Chem. Rev. 2009, 109, 2455-2504, which also describes examples of orthogonal protection schemes that can be used to conjugate, e.g. a natural polymer or unnatural polymer or combination thereof, to a specific site.

[000533] In general, the natural polymer or unnatural polymer or combination thereof (e.g, a hydrophilic or water-soluble polymer) can be conjugated to the first or second BMPR2 cyclic peptides by means of N-hydroxy succinimide (NHS)-, click-, or maleimide-based chemistry or other chemistry, as is known in the art. Canalle et al., Polypeptide-poly mer bioconjugates, Chem. Soc. Rev., 2010, 39, 329-353; and Gauthier et al., Peptide/protein-polymer conjugates: synthetic strategies and design concepts, Chem. Commun., 2008, 2591-2611, provide overviews of some approaches to constructing peptide-polymer bioconjugates.

[000534] Further details on how the BMPR2 cyclic peptide conjugates can be made are provided in the following examples section below.

General Peptide Synthetic Procedure 1

[000535] IL-23R inhibitor compounds described herein were synthesized from amino acids monomers using Merrifield solid phase synthesis techniques on Protein Technology’s Symphony multiple channel synthesizer. The peptides were assembled using HBTU (O- Benzotriazole-N,N,N’,N’-tetramethyl-uronium-hexafluoro-p hosphate), Diisopropylethylamine(DIEA) coupling conditions. For some amino acid couplings PyAOP(7 - Azabenzotriazol - 1 -yloxy jtripyrrolidinophosponium hexafluorophosphate) and DIEA conditions were used. Rink Amide MBHA resin (100-200 mesh, 0.57 mmol/g) was used for peptide with C-terminal amides and pre-loaded Wang Resin with N-a-Fmoc protected amino acid was used for peptide with C-terminal acids. The coupling reagents (HBTU and DIEA premixed) were prepared at 100 mmol concentration. Similarly, amino acids solutions were prepared at 100 mmol concentration. Peptide inhibitors of the present invention were identified based on medical chemistry optimization and/or phage display and screened to identify those having superior binding and/or inhibitory properties.

Preparation of Certain Modified Amino Acids

Synthesis of Protected 7-(3-Nacetyl-phenyl)-tryptophan (7(3NAcPh)W) (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(7-(3-ac etamidophenyl)-lH-indol- 3-yl)propanoic acid 50 C, 12 h

FmocHNL -Q FmocHN^A _OH

[000536] To a solution of 1 (30.0 g, 153 mmol), compound 2 (41.1 g, 230 mmol) and K3PO4 (97.4 g, 459 mmol) in FLO/ethanol (500 mL) and, Pd(dppf)C12 (1.12 g, 1.53 mmol) was added under an N2 atmosphere. The mixture was stirred at 80 °C for 16 h. The mixture was filtered. The mixture was concentrated, then extracted with ethyl acetate (500 mL x 2), dried with anhydrous Na2SO4. The organic layer was concentrated and purified by FCC (eluent: petroleum ether/ ethyl acetate=l:O to 55:45) to give 3 (25.0 g, yield: 62.5%) as yellow oil MS (ESI): mass calculated for C16H14N2O, 250.295, m/z found 251.0 [M+],

[000537] To a 1 L round-bottomed flask containing a solution of 3 (12.0 g, 47.9 mmol) in DMF (300 mL) bromine (Br2, 2.422 mL, 47.0 mmol) was slowly added. The mixture was stirred at 25 °C for 16 hours. The solution was added to aqueous sodium sulfite (500 mL), the mixture was stirred at 25 °C for 2 hours. The mixture was filtered, the filter cake was mixed with H2O (400 mL) and stirred at 25 °C for 1 h. The mixture was filtered, the solid was collected to give 4 as a crude product, which was purified by preparative high-performance liquid chromatography (Column: Phenomenex Cl 8 250 x 50mm x 10 um, Condition: water (FA)-CAN (20 %- 60 %)). The mixture was concentrated, extracted with CH2CI2 (1 L x 2), washed with brine, dried with anhydrous Na2SO4. The organic layers was filtered and concentrated to give 4 (9.70 g, yield: 60.8%) as a pale white. MS (ESI): mass calculated for Ci6Hi ₃ BrN ₂ O, 329.191, m/z found 328.8 [M],

[000538] A 250 mL three neck round-bottomed flask was charged with activated Zn powder (5.84 g, 89.3 mmol), DMF (120 mL) and L (382 mg, 1.50 mmol) was added under an N2 atmosphere at room temperature. After stirring for 20 min, a solution of 5 (13.6 g, 30.1 mmol) in DMF (30 mL) was added to the mixture. The reaction mixture was stirred for 30 min at room temperature, after which 4 (9.70 g, 29.5 mmol), tris(dibenzylideneacetone)- palladium (826 mg, 0.902 mmol), 2-dicyclohexylphosphino-2',6'-dimethoxybiphenyl (617 mg, 1.50 mmol) were added under an N2 atmosphere. The reaction mixture was stirred at 50 °C for 12 hours, after which solvent was removed under reduced pressure to give crude product 6. The crude product was extracted with ethyl acetate (1500 mL). The extract was washed with H2O (500 mL x 2), followed by brine (500 mL), after which it was dried over anhydrous Na2SO4, filtered, and concentrated to dryness in vacuo to give crude intermediate 6, which was purified by silica gel chromatography (0-100% ethyl acetate/petroleum ether (EtOAc/PE)) to afford 6 (11.0 g, yield: 63.8 %) as a brown- yellow oil. MS (ESI): mass calculated for C35H31N3O5, 573.638, m/z found 574.1 [M+l],

[000539] Intermediate 6 (11.0 g, 19.2 mmol), a stir bar, MesSnOH (3.64 g, 20.1 mmol) and DCE (150 mL) were added to a 250 mL round-bottomed flask and stirred at 50 °C for 12 hours. To the reaction mixture 2 N HC1 was added to adjust the to pH to 6 A second reaction starting from intermediate 6 was conducted and the products were combined for further workup. The combined reaction mixture was concentrated under reduced pressure to give the crude, which was purified by preparative HPLC using a Xtimate C18 150 x 40mm x 5um (eluent: 38 % to 68 % (v/v) CH3CN and H2O with 0.05 % HC1) to afford product 7. The product was suspended in water (100 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford 7 (7(3NAcPh)W, 11.8 g, yield: 66.8 %) as a white solid. MS (ESI): mass calculated For C34H29N3O5, 559.611, m/z found 560.0 [M+l], ^X H NMR DMSO- d ₆ (400-MHz) 5 10.73 (s, 1 H)- 10.10 (s, 1 H), 7.52- 8.02 (m, 7 H), 6.96 - 7.52 (m, 9 H), 4.03 - 4.4- (m, 3 H), 3.25 (d, J = 13.2 Hz, 2 H), 3.01 - 3.15 (m, 1 H), 2.08 (s, 3 H).

Synthesis of Protected 5-methyl-pyridyl-alanine (5MePyridinAla) (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(5-methy lpyridin-3-yl)propanoic acid

[000540] Activated Zn powder (8.18 g, 125 mmol), DMF (150 mL) and I2 (0.534 g, 2.11 mmol) were stirred under an N2 atmosphere at room temperature for 20 min., after which (R)-methyl 2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-iodopropanoa te (19.0 g, 42.1 mmol) in DMF (25 mL) was added. The reaction mixture was stirred for 30 min at room temperature, after which a mixture of 1 (7.97 g, 46.3 mmol), tris(dibenzylideneacetone)- palladium (1.16 g, 1.26 mmol) and 2-dicyclohexylphosphino-2',6'-dimethoxybiphenyl (0.864 g, 2.11 mmol) in DMF (25 mL) was added under an N2 atmosphere. The resulting reaction mixture was stirred at 50 °C for 12 h. The solvent was removed under reduced pressure to give the crude, which was purified by FCC (eluent: petroleum ether: ethyl acetate = 1: 0 to 0: 1 and ethyl acetate: methanol = 1: 0 to 2: 1) to afford the product 2 (10.00 g, 57.0 % yield) as a pale yellow liquid. MS (ESI): mass calculated for C25H24N2O4, 416.469, m/z found 417.1 [M+H] ⁺ .

[000541] To a mixture of 2 (9.50 g, 22.8 mmol) in THF (100 mL) was added LiOH.H ₂ O (1.91 g, 45.6 mmol) in H2O (10 mL). The mixture was stirred for 1 h at 0 °C. TLC showed most SM were consumed. To the reaction mixture was added HC1 (I N) dropwise at ice bath to pH=5. The reaction mixture was concentrated under reduced pressure, then poured into water (200 mL) the mixture was extracted with THF (200 mL x3). The organic layers were combined, washed with brine (100 mL), dried over anhydrous Na2SO4. After filtering the organic layers were concentrated under reduced pressure to afford crude product 3, which was purified by FCC (eluent: ethyl acetate : methanol =1:0 to 2:1) to obtain 3 (5MePyridinAla, 6.716 g , yield: 72.3 %) as a white powder. MS (ESI): mass calculated For C24H22N2O4, 402.442, m/z found 403.1 8.18 (s, 2H), 7.88 (d, 7=7.6 Hz, 2H), 7.63 (d, 7=7.2 Hz, 2H), 7.45 - 7.26 (m, 5H), 6.81 (s, 1H), 4.33 - 4.21 (m, 1H), 4.20 - 4.09 (m, 2H), 3.95 (s, 1H), 3.06 -3.05 (m, 1H), 2.92 - 2.89 (m, 1H), 2.18 (s, 3H).

EXAMPLE 6. Synthesis of Protected AEF(G) (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-(2-(3 -((2,2,4,6,7-pentamethyl- 2,3-dihydrobenzofuran-5-yl)sulfonyl)guanidino)ethoxy)phenyl) propanoic acid

[000542] Starting material 1 (9.9 g, 62.2 mmol), a stir bar, EtgN (14 mL, 101 mmol), and dichloromethane (DCM, 250 mL) were added to a 500 mL round-bottomed flask. The resulting mixture was treated with 2 (10 g, 34.6 mmol) in portions under ice-water bath. Then the reaction mixture was stirred at 25 °C for 12 hours. The reaction mixture was diluted with H2O (800 mL), extracted with DCM (400 mL x 2). The organic phase extracts were combined, washed with brine (800 mL), and concentrated to give the crude intermediate 3 as a yellow solid. The crude intermediate was triturated with ethyl acetate (50 mL) and the suspension isolated via filtration. The filter cake was washed with ethyl acetate (20 mL x 3) before drying under reduced pressure to give the 3 (7.12 g, 49%) as a white solid. MS (ESI): mass calculated for C19H29N3O5S6, 411.5, m/z found 412.1 [M+H] ⁺ .

[000543] Starting material 4 (50.0 g, 148 mmol), a stir bar, DMF (300 mL), and K2CO3 (102 g, 739 mmol) were added to a nitrogen-purged 1000 mL round-bottomed flask. The flask was subsequently evacuated and refilled with nitrogen (x 3), after which 1,2- dibromoethane (154 mL, 1.78 mol) was added, and the resulting mixture was stirred at 80 °C for 16 h under a N2 atmosphere. The reaction mixture was filtered and concentrated to dryness under reduced pressure to give the crude product, which was subjected to silica gel chromatography (eluent: EtOAc: pet ether = 0 - 60%) to give the 5 (64 g, 96%) as a light yellow oil. MS (ESI): mass calculated for C2oH3oBrNOs, 444.36, m/z found 466.1 [M+Na] ⁺ . [000544] Intermediate 5 (6.1 g, 13.7 mmol), 3 (6.2 g, 15.1 mmol), K2CO3 (7.6 g, 55.0 mmol), a stir bar, and CH3CN (100 mL) were charged into a 250 mL round-bottomed flask. The reaction mixture was stirred at 80 °C for 16 h under a N2 atmosphere. The reaction mixture was cooled to room temperature, diluted with H2O (200 mL), extracted with ethyl acetate (100 mL x 2). The organic phases were combined and washed with brine (300 mL) and concentrated to give the crude intermediate 6. The crude intermediate was purified by flash column chromatography (FCC, eluent: ethyl acetate I petroleum ether =0:1 to 2:1) to give the 6 (6.62 g, 44.2%) as a white solid. MS (ESI): mass calculated for C39H58N4O10S, 774.9, m/z found 775.5 [M+H] ⁺ .

[000545] Intermediate 6 (6.6 g, 8.52 mmol), HC1/1, 4-dioxane (90 mL, 4M), a stir bar, and 1, 4 - dixoane (30 mL) were charged into a 250 mL round bottomed flask. The resulting mixture was stirred at 25 °C for 12hr. The solvent was removed under reduced pressure to give intermediate 7 (7.8 g, crude product) as a colourless oil, which was directly used to next step. MS (ESI): mass calculated for C25H34N4O6S, 518.6, m/z found 519.2 [M+H] ⁺ .

[000546] Intermediate 7 (7.80 g, 15.0 mmol), a stir bar, Na2CO3 (3.19 g, 30.1 mmol), Fmoc-OSu (5.58 g, 16.5 mmol), 1, 4 - dioxane (50 mL), and H2O (50 mL) were added into a 250 mL round-bottomed flask at 25 °C . The reaction mixture was stirred at 25 °C for 16 hours, after which it was adjusted to pH = 5-6 with HC1 (2M) and the resulting reaction mixture was extracted with EtOAc (150 mL x 3). The organic phases from the extraction were combined and washed with brine (200 mL) and concentrated to give the crude intermediate 7. The crude intermediate was purified by preparative HPLC with a Column: Phenomenex C18 150 x 40mm x 5um, (eluent: 42% to 72% (v/v) CH3CN and H2O with 0.1% HC1) to afford pure product. The product was suspended in water (100 mL), the mixture frozen using dry ice/ethanol, and then lyophilized to dryness to afford desired product 8 AEF(G), 4 g, 36%) as a white solid. MS (ESI): mass calculated for C40H44N4O8S, 740.9, m/z found 741.3 [M+H] ⁺ . ¹ H NMR (400 MHz, DMSO- ₆ ): 7.87 (d, J = 7.2 Hz, 2H), 7.71 - 7.62 (m, 2H), 7.39 (td, J = 4.0, 7.2 Hz, 2H), 7.29 (td, J = 7.6, 12.0 Hz, 2H), 7.14 (br d, J = 8.0 Hz, 2H), 6.99 - 6.85 (m, 1H), 6.77 (br d, J = 8.4 Hz, 2H), 6.59 - 6.50 (m, 1H), 4.21 - 4.06 (m, 4H), 3.88 (br s, 2H), 3.42 - 3.36 (m, 4H), 2.99 (br dd, J = 4.4, 14.0 Hz, 1H), 2.92 (s, 2H), 2.78 (br dd, J = 10.8, 13.6 Hz, 1H), 2.47 (br s, 3H), 2.41 (s, 3H), 1.97 (s, 3H), 1.38 (s, 6H). Assembly

[000547] The peptides were assembled using standard Symphony protocols. The peptide sequences were assembled as follows: Resin (250 mg, 0.14 mmol) in each reaction vial was washed twice with 4ml of DMF followed by treatment with 2.5ml of 20% 4-methyl piperidine (Fmoc de-protection) for lOmin. The resin was then filtered and washed two times with DMF (4ml) and re-treated with N-methyl piperidine for additional 30 minute. The resin was again washed three times with DMF (4 ml) followed by addition 2.5ml of amino acid and 2.5ml of HBTU-DIEA mixture. After 45min of frequent agitations, the resin was filtered and washed three timed with DMF (4 ml each). For a typical peptide of the present invention, double couplings were performed. After completing the coupling reaction, the resin was washed three times with DMF (4 ml each) before proceeding to the next amino acid coupling.

Ring Closing Metathesis to form Olefins

[000548] An an example of ring closing metathesis a the resin (100 pmol) was washed with 2 ml of DCM (3 x 1 min) and then with 2 ml of DCE (3 x 1 min) before being treated with a solution of 2 ml of a 6 mM solution of Grubbs' first-generation catalyst in DCE (4.94 mg ml-1; 20 mol% with regard to the resin substitution). The solution was refluxed overnight (12 h) under nitrogen before being drained. The resin was washed three times with DMF (4 ml each); DCM (4 ml) before being dried and cleaved.

Cleavage

[000549] Following completion of the peptide assembly, the peptide was cleaved from the resin by treatment with cleavage reagent, such as reagent K (82.5% trigluoroacetic acid, 5% water, 5% thioanisole, 5% phenol, 2.5% 1,2-ethanedithiol). The cleavage reagent was able to successfully cleave the peptide from the resin, as well as all remaining side chain protecting groups.

[000550] The cleaved peptides were precipitated in cold diethyl ether followed by two washings with ethyl ether. The filtrate was poured off and a second aliquot of cold ether was added, and the procedure repeated. The crude peptide was dissolved in a solution of acetonitrile: water (7:3 with 1% TFA) and filtered. The quality of linear peptide was then verified using electrospray ionization mass spectrometry (ESI-MS) (Micromass/Waters ZQ) before being purified. Disulfide Bond Formation via Oxidation

[000551] The peptide containing the free thiol (for example diPen) was assembled on a Rink Amide-MBHA resin following general Fmoc-SPPS procedure. The peptide was cleaved from the resin by treatment with cleavage reagent 90% trifluoroacetic acid, 5% water, 2.5% 1,2-ethanedithiol, 2.5% tri-isopropylsilane). The cleaved peptides were precipitated in cold diethyl ether followed by two washings with ethyl ether. The filtrate was poured off and a second aliquot of cold ether was added, and the procedure repeated. The crude peptide was dissolved in a solution of acetonitrile:water (7:3 with 1% TFA) and filtered giving the wanted unoxidized peptide crude peptide.

[000552] The crude, cleaved peptide was dissolved in 20ml of water: acetonitrile. Saturated Iodine in acetic acid was then added drop wise with stirring until yellow color persisted. The solution was stirred for 15 minutes, and the reaction was monitored with analytic HPLC and LCMS. When the reaction was completed, solid ascorbic acid was added until the solution became clear. The solvent mixture was then purified by first being diluted with water and then loaded onto a reverse phase HPLC machine (Luna C18 support, lOu, 100A, Mobile phase A: water containing 0.1% TFA, mobile phase B: Acetonitrile (ACN) containing 0.1% TFA, gradient began with 5% B, and changed to 50% B over 60 minutes at a flow rate of 15ml/min). Fractions containing pure product were then freeze-dried on a lyophilyzer.

Thioether Bond Formation

[000553] The peptide containing the free thiol was assembled on a Rink Amide-MBHA resin following general Fmoc-SPPS procedure. Chlorination was carried out by treating the resin with PPhs (10 equiv.) and CLCCN (10 equiv.) in DCM for 2 h. The peptide was cleaved from the resin by treatment with cleavage reagent 90% trifluoroacetic acid, 5% water, 2.5% 1,2-ethanedithiol, 2.5% tri-isopropylsilane). The cleaved peptides were precipitated in cold diethyl ether followed by two washings with ethyl ether. The filtrate was poured off and a second aliquot of cold ether was added, and the procedure repeated. The crude peptide was dissolved in a solution of acetonitrile:water (7:3 with 1% TFA) and filtered giving the wanted uncyclized crude peptide Purification

[000554] Analytical reverse-phase, high performance liquid chromatography (HPLC) was performed on a Gemini Cl 8 column (4.6 mm x 250 mm) (Phenomenex). SemiPreparative reverse phase HPLC was performed on a Gemini 10 pm Cl 8 column (22 mm x 250 mm) (Phenomenex) or Jupiter 10 pm, 300 angstrom (A) C18 column (21.2 mm x 250 mm) (Phenomenex). Separations were achieved using linear gradients of buffer B in A (Mobile phase A: water containing 0.15% TFA, mobile phase B: Acetonitrile (ACN) containing 0.1% TFA), at a flow rate of 1 mL/min (analytical) and 15 mL/min (preparative). Separations were achieved using linear gradients of buffer B in A (Mobile phase A: water containing 0.15% TFA, mobile phase B: Acetonitrile (ACN) containing 0.1% TFA), at a flow rate of 1 mL/min (analytical) and 15mL/min (preparative).

General Procedure 1A:

[000555] IL-23R inhibitor compounds described herein were synthesized from amino acids monomers using standard Fmoc solid phase synthesis techniques on a CEM Liberty Blue™ microwave peptide synthesizer. The peptides were assembled using Oxyma/DIC (ethyl cyanohydroxyiminoacetate/diisopropyl-carbodiimide) with microwave heating. Rink Amide-MBHA resin (100-200 mesh, 0.66 mmol/g) was used for peptides with C-terminal amides and pre-loaded Wang Resin with N-a-Fnioc protected amino acid was used for peptide with C-terminal acids. Oxyma was prepared as a IM solution in DMF with 0.1M DIEA. DIC was prepared as 0.5M solution in DMF. The Amino acids were prepared at 200mM. Peptide inhibitors of the present invention were identified based on medicinal chemistry optimization and/or phage display and screened to identify those having superior binding and/or inhibitory properties.

Assembly

[000556] The peptides were made using standard CEM Liberty Blue™ protocols. The peptide sequences were assembled as follows: Resin (400 mg, 0.25 mmol) was suspended in 10 ml of 50/50 DMF/DCM. The resin was then transferred to the reaction vessel in the microwave cavity. The peptide was assembled using repeated Fmoc deprotection and Oxyma/DIC coupling cycles. For deprotection, 20% 4-methylpiperidine in DMF was added to the reaction vessel and heated to 90 °C for 65 seconds. The deprotection solution was drained and the resin washed three times with DMF. For most amino acids, 5 equivalents of amino acid, Oxyma and DIC were then added to the reaction vessel and microwave irradiation rapidly heated the mixing reaction to 90 °C for 4 min. For Arginine and Histidine residues, milder conditions using respective temperatures of 75 and 50 °C for 10 min were used to prevent racemization. Rare and expensive amino acids were often coupled manually overnight at room temperature using only 1.5-2 eq of reagents. Difficult couplings were often double coupled 2 x 4 min at 90 °C. After coupling the resin was washed with DMF and the whole cycle was repeated until the desired peptide assembly was completed.

Cleavage

[000557] Following completion of the peptide assembly, the peptide was then cleaved from the resin by treatment with a standard cleavage cocktail of 91:5:2:2 TFA/H2O/TIPS/DODT for 2 hrs. If more than one Arg(pbf) residue was present the cleavage was allowed to go for an additional hour.

[000558] The cleaved peptides were precipitated in cold diethyl ether. The filtrate was decanted off and a second aliquot of cold ether was added, and the procedure was repeated. The quality of linear peptide was then verified using electrospray ionization mass spectrometry (ESLMS) (Waters® Micromass® ZQ™) before being purified.

Disulfide Bond Formation via Oxidation

[000559] The peptide containing the free thiol (for example diPen) was assembled on a Rink Amide-MBHA resin following general Fmoc solid phase synthesis, cleavage and isolation as described above.

[000560] The crude cleaved peptide comprising two thiol containing amino acids was dissolved ~2mg/ml in 50/50 acetonitrile/water. Saturated iodine in acetic acid was then added dropwise with stirring until yellow color persisted. The solution was stirred for a few minutes, and the reaction was monitored with analytic HPLC and LCMS. When the reaction was completed, solid ascorbic acid was added until the solution became clear. The solvent mixture was then purified by first being diluted with water and then loaded onto a reverse phase HPLC Column (Luna® Cl 8 support, lOu, 100A, Mobile phase A: water containing 0.1% TFA, mobile phase B: acetonitrile (ACN) containing 0.1% TFA, gradient began with 15% B, and changed to 50% B over 60 minutes at a flow rate of 15ml/min). Fractions containing pure product were then freeze-dried on a lyophilizer. Purification

[000561] Analytical reverse-phase, high performance liquid chromatography (HPLC) was performed on a Gemini® Cl 8 column (4.6 mm x 250 mm) (Phenomenex). SemiPreparative reverse phase HPLC was performed on a Gemini® 10 pm C18 column (22 mm x 250 mm) (Phenomenex) or Jupiter® 10 pm, 300 angstrom (A) Cl 8 column (21.2 mm x 250 mm) (Phenomenex). Separations were achieved using linear gradients of buffer B in A (Mobile phase A: water containing 0.15% TFA, mobile phase B: Acetonitrile (ACN) containing 0.1% TFA), at a flow rate of 1 mL/min (analytical) and 20 mL/min (preparative).

Alternate Procedure for solid-phase synthesis of peptides

[000562] Peptide were chemically synthesized using optimized 9-fluorenylmethoxy carbonyl (Fmoc) solid phase peptide synthesis protocols. For C-terminal amides, Rink-amide MBHA resin, Methyl Indole AM resin or CTC resin then couple amine after cleavage was used. The side chain protecting groups were as follows: Thr, Glu: O-tButyl; Asn, Pen: Trityl; AEF, AEF(NMe): Boc; D-Arg: Pbf. For coupling, a two to five-fold excess of a solution containing Fmoc amino acid, HATU and DIEA (1:0.95:2) in DMF was added to swelled resin for 1 to 5 hours. Double coupling is employed when coupling 2Nal or other sterically hindered amino acids. Fmoc protecting group removal was achieved by treatment with a DMF, piperidine (4:1) solution for 30 min. The cycles are repeated until the full-length peptide is obtained. The quaternary ammonium amino acids (eg: APEG3F) should be transferred to HC1 salt if the salt form was formic acid.

Procedure for cleavage of peptides off resin

[000563] Side chain deprotection and cleavage of the peptide analogues of the invention was achieved by stirring dry resin in a solution containing trifluoroacetic acid, water, DTT and tri-isopropylsilane (90:2.5:5:2.5) for 3 hours. Filtered and the combined filtrate was precipitated with cold methyl tertbutyl ether (MTBE). The mixture was centrifuged (3000 rpm, 3 min) and decanted. The pellet was washed with MTBE and centrifuged. Lyophilized the residue to give the linear peptide.

Procedure for cyclization

[000564] For cyclization, the iodine solution in MeOH (0.1M) was added to peptide solution (20% MeCN/H2O (lmmol/L)) drop-wise until solution remains yellow. After ~2h LCMS showed the reaction was complete. Excess iodine was quenched by the addition of IM Na2S2O3 in water (turned colorless instantly).

Procedure for purification of peptides

[000565] Purification of the peptides was achieved using reverse-phase high performance liquid chromatography (RP-HPLC). Purification of the cyclized peptides was achieved using preparative RP-HPLC with a C18 column with a flow rate of 20 mL/min. Separation was achieved using gradients of buffer B in A (Buffer A: 0.075% TFA in water; Buffer B: ACN). (Note 1). Analysis was performed using a Cl 8 column with a flow rate of 1 mL/min (Note 2). [000566] One of skill in the art will appreciate that standard methods of peptide synthesis may be used to generate the compounds of the invention.

[000567] Prep. HPLC Method A: Description: Mobile Phase: 0.075% TFA in water (solvent A) and acetonitrile (solvent B) Column: Luna 100*25 mm, Cl 8, 10 um, 100A + Gemini® 150*30 mm, C18, 5 um, 110A column; Flow Rate: 20 mL/min; Wavelength: UV 220nm&254nm; Oven Tern. Room temperature

[000568] Prep. HPLC Method B: Description: Mobile Phase: 0.075% TFA in water (solvent A) and acetonitrile (solvent B) Column: Welch Ultimate XB-C18, 250*50 mm, 7 um, 120A + Welch Xtimate C18, 250*50 mm, 10 um, 120A column; Flow Rate: 80 mL/min; Wavelength: UV 220nm&254nm; Oven Tern. Room temperature

[000569] Prep. HPLC Method C: Description: Mobile Phase: 0.075% TFA in water (solvent A) and acetonitrile (solvent B) Column: Luna Cl 8, 250*100 mm, 10 um, 100A column; Flow Rate: 120 mL/min; Wavelength: UV 220nm&254nm; Oven Tern. Room temperature

[000570] Prep. HPLC Method D: Description: Mobile Phase: 0.5% AcOH in water (solvent A) and acetonitrile (solvent B) Column: Luna Cl 8, 250*100 mm, 10 um, 100A column; Flow Rate: 120 mL/min; Wavelength: UV 220nm&254nm; Oven Tern. Room temperature

[000571] Prep. HPLC Method E: Description: Mobile Phase: 0.075% TFA in water (solvent A) and acetonitrile (solvent B) Column: Welch Ultimate® XB-C18, 250*100 mm, 10 um, 120A column; Flow Rate: 250 mL/min; Wavelength: UV 220nm&254nm; Oven Tern. Room temperature

[000572] Prep. HPLC Method F: Description: Mobile Phase: 0.5% AcOH in water (solvent A) and acetonitrile (solvent B) Column: Welch Ultimate® XB-C18, 250*50 mm, 10 um, 120A + Welch Xtimate®C18, 250*50 mm, 10 um, 120A column; Flow Rate: 80 mL/min; Wavelength: UV 220nm&254nm; Oven Tern. Room temperature

[000573] Analysis LCMS Method: Mobile Phase: 0.1% TFA in water (solvent A) and 0.1%TFA in acetonitrile (solvent B), using the elution gradient 10%-80% (solvent B) over 0.9 minutes and using the elution gradient 80%-90% for 0.6 minutes at a flow rate of 1.0 ml/min; Column: Xbrige C18,3.5um,2.1*30mm; Wavelength: UV 220nm&254nm; Column temperature: 30°C; MS ionization: ESI

EXAMPLES

EXAMPLE 1: SYNTHESIS OF SEQ ID 57

[000574] The peptide was synthesized using standard Fmoc chemistry.

1) Add DMF to the vessel containing MB HA Resin (0.20 mmol, 0.64 g, sub: 0.31 mmol/g) and swell for 1-4 hours.

2) Add 20% piperidine/DMF and mix for 30 min.

3) Drain and then DMF wash 30 sec with 5 times.

4) Add Fmoc-amino acid solution and mix 30 seconds, then add activation buffer, N2 bubbling for about 2 hour

5) Add 20% piperidine/DMF and mix for 30 min

6) Repeat step 2 to 5 for next amino acid coupling. The coupling reaction was monitored by ninhydrin or tetrachlor color test, and the resin was washed with DMF for 5 times. The resin was washed with MeOH for 3 times and dried by vacuum

[000575] Monitored method:

1. Ninhydrin test: A: 5% ninhydrin /EtOH; B: 80% phenol /EtOH; C: pyridine 2. Tetrachlor color test: A: 2% tetrachlor/ DMF; B: 2% aldehyde/ DMF 110°C for 3min

Peptide Cleavage:

1) Add cleavage buffer (5.0% DTT 12.5% H ₂ O 12.5% TIS /90%TFA) 12 mL to the flask containing the side chain protected peptide at room temperature and stir for 3 hrs.

2) Filtered washed with 5 mL TFA. The combined filtrate was precipitated with cold methyl tertbutyl ether (MTBE). The mixture was centrifuged (3000 rpm, 3 min) and decanted. The pellet was washed with MTBE and centrifuged.

3) Lyophilized the residue to give the intermediate 1 (350 mg, crude)

Peptide Cyclization and Purification:

[000576] Crude peptide intermediate 1 (350 mg, 0.179 mmol) was dissolved in 20% MeCN /H2O (200 mL). To a stirred solution of the peptide was added the iodine solution in MeOH (0.1M, 0.8 mL) drop- wise until solution remains yellow. After ~2h LCMS showed the reaction was complete. Excess iodine was quenched by the addition of IM Na ₂ S ₂ O3 in water (15 uL) (turned colorless instantly). Added 10-20 mL of MeCN to decrease turbidity. Purified the solution by Prep-HPLC (A: 0.075% TFA in H ₂ O, B: ACN) (Note 1: Method A) to give SEQ ID 57 (122.7 mg, 97.3% purity, 30.6% yield for this step; over all yield: 27.2%) obtained as white solid. Analysis was performed using a Cl 8 column with a flow rate of 1 mL/min (Note 2). LCMS Summary: calculated MW: 1953.29, observed MW: 977.1 [(M+2H)/2]

EXAMPLE 2: SYNTHESIS OF SEQ ID 67

[000577] The peptide was synthesized using standard Fmoc chemistry. 1) Add DMF to the vessel containing Methyl Indole AM resin (0.20 mmol, 0.29 g, sub: 0.69 mmol/g) and swell for 2 hours.

2) Add 20% piperidine/DMF and mix for 30 min.

3) Drain and then DMF wash 30 sec with 5 times.

4) Add Fmoc-amino acid solution and mix 30 seconds, then add activation buffer, N2 bubbling for about 1-4 hours

5) Add 20% piperidine/DMF and mix for 30 min

6) Repeat step 2 to 5 for next amino acid coupling. The coupling reaction was monitored by ninhydrin or tetrachlor color test, and the resin was washed with DMF for 5 times. The resin was washed with MeOH for 3 times and dried by vacuum

[000578] Monitored method:

1. Ninhydrin test: A: 5% ninhydrin /EtOH; B: 80% phenol /EtOH; C: pyridine

2. Tetrachlor color test: A: 2% tetrachlor/ DMF; B: 2% aldehyde/ DMF 110°C for 3min

Peptide Cleavage:

1) Add cleavage buffer (5.0% DTT 12.5% H ₂ O 12.5% TIS /90%TFA) 12 mL to the flask containing the side chain protected peptide at room temperature and stir for 3 hrs.

2) Filtered washed with 5 mL TFA. The combined filtrate was precipitated with cold methyl tertbutyl ether (MTBE). The mixture was centrifuged (3000 rpm, 3 min) and decanted. The pellet was washed with MTBE and centrifuged.

3) Lyophilized the residue to give the intermediate 2 (350 mg, crude)

Peptide Cyclization and Purification:

[000579] Crude peptide intermediate 2 (350 mg, 0.174 mmol) was dissolved in 20% MeCN /H2O (200 mL). To a stirred solution of the peptide was added the iodine solution in MeOH (0.1M, 1.5 mL) drop- wise until solution remains yellow. After ~2h LCMS showed the reaction was complete. Excess iodine was quenched by the addition of IM Na2S2O3 in water (15 uL) (turned colorless instantly). Added 10-20 mL of MeCN to decrease turbidity. Purified the solution by Prep-HPLC (A: 0.075% TFA in H2O, B: ACN) (Note 1: Method A) to give SEQ ID 67 (85.9 mg, 97.7% purity, 21.5% yield for this step; over all yield: 18.7%) obtained as white solid. Analysis was performed using a C18 column with a flow rate of 1 mL/min (Note 2). LCMS Summary: calculated MW: 2009.39, observed MW: 1005.0 [(M+2H)/2], 670.3 [(M+3H)/3], EXAMPLE 3: SYNTHESIS OF SEQ ID 68

[000580] The peptide was synthesized using standard Fmoc chemistry.

1) Add DMF to the vessel containing Sar-CTC Resin (0.30 mmol, 0.96 g, sub: 0.31 mmol/g) and swell for 2 hours.

2) Add 20% piperidine/DMF and mix for 30 min.

3) Drain and then DMF wash 30 sec with 5 times.

4) Add Fmoc- amino acid solution and mix 30 seconds, then add activation buffer, N2 bubbling for about 1-4 hours

5) Add 20% piperidine/DMF and mix for 30 min 6) Repeat step 2 to 5 for next amino acid coupling. The coupling reaction was monitored by ninhydrin or tetrachlor color test, and the resin was washed with DMF for 5 times. The resin was washed with MeOH for 3 times and dried by vacuum

[000581 ] Monitored method:

1. Ninhydrin test: A: 5% ninhydrin /EtOH; B: 80% phenol /EtOH; C: pyridine

2. Tetrachlor color test: A: 2% tetrachlor/ DMF; B: 2% aldehyde/ DMF 110°C for 3min

Peptide Cleavage (General procedure for preparation of intermediate 3b):

1) Add cleavage buffer (20% HFIP /DCM) 50 mL to the peptide Resin stirring for 30 min for 3 times.

2) The DCM was concentrated under reduced pressure.

3) Dissolved the crude peptide in ACN/water and lyophilized overnight, to give the intermediate 3b (300 mg, crude)

General procedure for preparation of intermediate 3c

[000582] To a solution of compound 3b (300 mg, 0.10 mmol) in DMF (5.00 mF) was added dimethylamine hydrochloride (16.3 mg, 2.00 eq), DIC (30.9 uE, 2.00 eq), HOAT (27 mg, 2.00 eq) and DIEA (34 uE, 2.00 eq). The mixture was stirred at 25 °C for 1 h. The reaction was monitored by LCMS, LCMS showed the starting material didn't react completely, then added one equivalent of dimethylamine hydrochloride, DIC, HOAT and DIEA for 16 h, LCMS showed starting material was consumed received desired mass. The filtrate was precipitated with cold methyl tertbutyl ether (MTBE) (50 mL) and centrifuged (3000 rpm, 3 min) to get an oily liquid, the isopropyl ether was dried with nitrogen to get intermediate 3c.

General procedure for preparation of intermediate 3d

1) Add cleavage buffer (5.0% DTT/ 2.5% H ₂ O/ 2.5% TISZ 90% TFA) 30 mL to the flask containing the side chain protected peptide at room temperature and stir for 3 hrs. 2) Filtered washed with 5 mL TFA. The combined filtrate was precipitated with cold methyl tertbutyl ether (MTBE). The mixture was centrifuged (3000 rpm, 3 min) and decanted. The pellet was washed with MTBE and centrifuged.

3) Lyophilized the residue to give the intermediate 3d (350 mg, crude)

General procedure for preparation of SEQ ID 68

[000583] Crude peptide intermediate 3d (350 mg, 0.168 mmol) was dissolved in 20% MeCN/H2O (300 mL). To a stirred solution of the peptide was added the iodine solution in MeOH (0.1M, 1.5 mL) drop- wise until solution remains yellow. After ~2h LCMS showed the reaction was complete. Excess iodine was quenched by the addition of IM Na2SzO3 in water (15 uL) (turned colorless instantly). Added 10-20 mL of MeCN to decrease turbidity. Purified the solution by Prep-HPLC (A: 0.075% TFA in H2O, B: ACN) (Note 1: Method A) to give SEQ ID 68 (49.7 mg, 95.0% purity, 12.1% yield for this step; over all yield: 6.83%) obtained as white solid. Analysis was performed using a Cl 8 column with a flow rate of 1 mL/min (Note 2). LCMS Summary: calculated MW: 2077.39, observed MW: 1039.6 [(M+2H)/2], 693.5 [(M+3H)/3],

EXAMPLE 4: SYNTHESIS OF SEQ ID 82

[000584] The peptide was synthesized using standard Fmoc chemistry.

7) Add DMF to the vessel containing MB HA Resin (0.20 mmol, 0.64 g, sub: 0.31 mmol/g) and swell for 2 hours.

8) Add 20% piperidine/DMF and mix for 30 min.

9) Drain and then DMF wash 30 sec with 5 times.

10) Add Fmoc-amino acid solution and mix 30 seconds, then add activation buffer, N2 bubbling for about 1-4 hours

11) Add 20% piperidine/DMF and mix for 30 min 12) Repeat step 2 to 5 for next amino acid coupling. The coupling reaction was monitored by ninhydrin or tetrachlor color test, and the resin was washed with DMF for 5 times. The resin was washed with MeOH for 3 times and dried by vacuum

[000585] Monitored method:

1. Ninhydrin test: A: 5% ninhydrin /EtOH; B: 80% phenol /EtOH; C: pyridine

2. Tetrachlor color test: A: 2% tetrachlor/ DMF; B: 2% aldehyde/ DMF 110°C for 3min

Peptide Cleavage:

4) Add cleavage buffer (5.0% DTT 12.5% H ₂ O 12.5% TIS /90%TFA) 12 mL to the flask containing the side chain protected peptide at room temperature and stir for 3 hrs.

5) Filtered washed with 5 mF TFA. The combined filtrate was precipitated with cold methyl tertbutyl ether (MTBE). The mixture was centrifuged (3000 rpm, 3 min) and decanted. The pellet was washed with MTBE and centrifuged.

6) Eyophilized the residue to give the intermediate 4 (350 mg, crude)

Peptide Cyclization and Purification:

[000586] Crude peptide intermediate 4 (350 mg, 0.17 mmol) was dissolved in 20% MeCN /H2O (200 mF). To a stirred solution of the peptide was added the iodine solution in MeOH (0.1M, 0.8 mF) drop- wise until solution remains yellow. After ~2h ECMS showed the reaction was complete. Excess iodine was quenched by the addition of IM Na^S^FE in water (15 uE) (turned colorless instantly). Added 10-20 mF of MeCN to decrease turbidity. Purified the solution by Prep-HPFC (A: 0.075% TFA in H ₂ O, B: ACN) (Note 1: Method A) to give SEQ ID 82 (100.8 mg, 94.7% purity, 23.4% yield for this step; over all yield: 19.8%) obtained as white solid. Analysis was performed using a C18 column with a flow rate of 1 mE/min (Note 2). LCMS Summary: calculated MW: 2058.4, observed MW: 1029.5 [(M+2H)/2], 686.8 [(M+3H)/3],

EXAMPEE 5: Synthesis of SEQ Id 105

MeCO-k(Me) ₃ -Pen(3)-N(N(Me) ₂ )-T-7MeW-K(NMeAc)-Pen(3)-AEF(N(Me) ₂ )-2Nal-THP-E-

N-3Pya-Sar-CON(Me)2

Step A - Synthesis of Intermediate 5

[000587] The peptide was synthesized by standard Solid-phase Peptide Synthesis (SPPS) using Fmoc/t-Bu chemistry. The assembly was performed on a Rink-amide AM resin (440 pmol, 100-200Mesh; loading 0.35 mmol/g). First aminoacid was loaded manually using an equimolar solution of Fmoc-Asp-OAll, HO At and DIC in DMF, at room temperature. Complete acylation was monitored by ninhhydrin test. The resin was then treated with 0.25Eq of Pd Tetrakis, 24 Eq of Phenylsilane in 5ml of dry DCM under N2 atmosphere for 30 min (process repeated 2 times); washed with DCM, DMF and a solution of 0.5% sodium dimethyldithiocarbamate (0.5%) and DIPEA (0.5%) in DMF. Fmoc-OSu and DIPEA (1:1, 2Eq) in DCM were added and left under stirring at room temperature for 30 minutes. Further peptide elongation was performed manually preactivating the resin with HATU (1.2Eq), DIPEA (2.2Eq) and then adding solution of DIPEA (2.2Eq) and 3Pya-Sar-CON(Me)2 dimer (2.2Eq, TM83) in DMF. The reaction mixture was left under stirring for Ihr at room temperature. Complete acylation was monitored by test cleavage. The resin was then placed in a MW reaction vessel and the assembly was continued on the Cem Liberty Blue microwave peptide synthesizer (CEM Inc.). During peptide assembly on solid phase, the side chain protecting groups were: tert-butyl for Thr and Glu; trityl for Pen and Asn. D-Lys(Me) ₃ at position 3 was coupled manually using DIC-HOBt (3Eq, 1:1:1) using MW irradiation (90°C, 5 min) and complete acylation was monitored by ninhhydrin test. [000588] All the amino acids were dissolved at a 0.4 M concentration in DMF. The acylation reactions were performed for 3 min at 90°C under MW irradiation with 5 folds excess of activated amino acids over the resin free amino groups. The amino acids were activated with equimolar amounts of 0.5M solution of DIC in DMF and Oxyma solution IM in DMF. Double acylation reactions were performed for 3Pyal5 & 2NallO. Fmoc deprotections were performed using 20%(V/V) piperidine in DMF. Capping of the free amino group was performed manually using lOeq of acetic anhydride in DMF.

[000589] At the end of the assembly the resin was washed with DMF, MeOH, DCM, Et2O. The peptide was cleaved from solid support using 15 ml of TFA solution (v/v) (87.5% TFA, 5% H2O, 2.5% TIPS, 5%Phenol) for approximately 1.5 hours, at room temperature. The resin was then filtered and precipitated in cold MTBE (135mL). After centrifugation, the peptide pellets were washed with fresh cold diethyl-ether to remove the organic scavengers. The process was repeated twice. Final pellets were dried, re-suspended in H2O and acetonitrile 1:1 + 0.1% TFA and stirred overnight. Then lyophilized to afford the desired linear intermediate 5 (Y= 84%). LCMS anal. calc. For C106H155N22O23S2+: 2169.66 Da; found; 1085.2 (M+2) ²⁺

Step B - Synthesis ofSEQ ID 105

[000590] The crude peptide was dissolved in ACN\H2O (5mg\ml). Saturated Iodine in acetic acid was then added dropwise under stirring until yellow color persisted. Rxn was completed in 30 min (monitored by UPLC-MS). Solid ascorbic acid was added until the solution became clear. After lyophilization the cyclized peptide was purified by reverse-phase HPLC using preparative Waters DeltaPak C4 (200x40mm, 300A, 15pm). Mobile phase A: + 0.1% TFA, mobile phase B: Acetonitrile (ACN) + 0.1% TFA. The following gradient of eluent B was used: 15%B to 15%B over 5min, to 30%B over 25min, flow rate 80 mL/min, wavelength 214 nm. Collected fractions were lyophilized to afford SEQ ID 105 (Y= 13.4%). LCMS anal. calc. For C106H153N22O23S2+: 2167.64 Da; found; 1084.2 (M+2) ²⁺

EXAMPLE 6: Synthesis of SEQ ID 112

Step A - Synthesis of Intermediate 6

[000591] Synthesis was performed using Fmoc-protected amino acids on a solid-phase H-Sar-2-Chlorotrityl resin (AAPPTEC RTG103, 0.3 meq/g, 100-200 mesh) with a CEM Liberty Blue automated microwave peptide synthesizer. Peptide was synthesized on a 0.25 mmol scale. Typical reaction conditions were as follows: Deprotection Conditions: Fmoc deprotection was carried out in 2 stages using 20% piperidine in DMF (10 mL) under microwave conditions (50 °C, 2.5 min; 50 °C, 5 min). Residue Coupling Conditions: Fmoc- protected amino acid (5 mL of a 0.2 M amino acid stock solution in DMF, 1 mmol) was delivered to the rein, followed by HATU (2 mL of a 0.45 M stock solution in DMF, 0.9 mmol), and A, A-diisopropylelhylamine (1 mL of 2 M solution in NMP, 2 mmol) and allowed to react for 15 min at 50 °C. Double couplings were used for 3Pya, THP, and Thr and for residues incorporated after THP and Thr (2Nal and Asn). The peptide was capped with 20% AC2O in DMF (10 mL). At the end of the assembly, the peptide resin intermediate 6 was washed with DMF and DCM.

Step B -Synthesis of Intermediate 6a.

[000592] Cleavage of 2ClTrt resin was carried out by treating the intermediate 6 (0.125 mmol) with a solution of 2,2,2-trifluoroethanol/DCM (2/8, 5 mL) for 1 hr at room temperature. The resin was filtered off and the filtrate was collected. The same operation was repeated three times. The resin was then washed with of 2,2,2-trifluoroethanol/DCM (2/8, 8 mL) three times. The solutions were combined and evaporated to dryness to afford a light yellow solid as intermediate 6a. (Yield: 39%). LCMS anal. calc. For C179H201N19O25S2: 3080.4; found: 1552 (M+l+23) ²⁺ Step C -Synthesis of Intermediate 6b.

[000593] To a solution of intermediate 6a (100 mg, 0.0324 mmol) in DMF (1.0 mL) was added HATU (24.7 mg, 0.0649 mmol), morpholine (5.65 mg, 0.0649 mmol) and Hunig's base (0.0112 mL, 0.75 g/mL, 0.0649 mmol). The reaction mixture was then stirred at room temperature for 30 mins. The reaction mixture was then concentrated to give intermediate 6b as a crude and used for the next step. LCMS anal. calc, for C183H208N20O25S2: 3149.5; found: 1587 (M+l+23) ²⁺

Step D -Synthesis of Intermediate 6c.

[000594] Intermediate 6c was treated with a cocktail solution of TFA/H2O/DODT/TIPS 92.5/2.5/2.5/2.5 (1 mL) for 30 mins at 42 °C on a CEM Razor cleavage station. The mixture was then concentrated and then added to cold methyl-t-butyl ether in order to precipitate the peptide. After centrifugation, the peptide pellets were washed with fresh cold methyl-t-butyl ether to remove the organic scavengers. The process was repeated twice. Final pellets were dried, re-suspended in H2O and acetonitrile, then lyophilized to afford the desired protected intermediate 6d as a light yellow solid. (Yield: 78%). LCMS anal. calc, for C94H128N20O23S2: 1968.9; found: 985.4 (M+2) ²⁺ Step E -Synthesis of SEO ID 112.

[000595] The intermediate 6c from Step D was dissolved in 40% ACN/water (50 mL). Iodine in methanol (0.1 M) was then added drop wise with stirring until yellow color persisted. The reaction was monitored with UPLC-MS. When the reaction was complete, solid ascorbic acid was added until the solution became clear. The solvent mixture was then lyophilized and the resulting material was then dissolved in DMSO and was purified by Cl 8 reverse-phase HPLC (Waters XBridge OBD C18, 50x150 mm, 5 pm, 130A), using as eluents (A) 0.1% TFA in water and (B) 0.1% TFA in acetonitrile, gradient began with 15% B, and changed to 30% B over 25 minutes at a flow rate of 80ml/min). Fractions containing pure product were collected and then freeze-dried to afford the desired product as a white powder. (Yield: 12.6%). LCMS anal. Calcd for C ₉ 4Hi26N ₂ o02 ₃ S2: 1966.88; found: 985.1 (M+2) ²⁺

EXAMPLE 7: SYNTHESIS OF SEQ ID 137

[000596] The peptide was synthesized using standard Fmoc chemistry.

1) Add DMF to the vessel containing MB HA Resin (3.0 mmol, 9.67 g, sub: 0.31 mmol/g) and swell for 2 hours.

2) Add 20% piperidine/DMF and mix for 30 min.

3) Drain and then DMF wash 30 sec with 5 times.

4) Add Fmoc- amino acid solution and mix 30 seconds, then add activation buffer, N2 bubbling for about 1-4 hours

5) Add 20% piperidine/DMF and mix for 30 min

6) Repeat step 2 to 5 for next amino acid coupling. The coupling reaction was monitored by ninhydrin or tetrachlor color test, and the resin was washed with DMF for 5 times. The resin was washed with MeOH for 3 times and dried by vacuum

[000179] Monitored method:

1. Ninhydrin test: A: 5% ninhydrin /EtOH; B: 80% phenol /EtOH; C: pyridine

2. Tetrachlor color test: A: 2% tetrachlor/ DMF; B: 2% aldehyde/ DMF 110°C for 3min

Peptide Cleavage:

1) Add cleavage buffer (5.0% DTT /2.5% H ₂ O /2.5% TIS /90%TFA) 180 mL to the flask containing the side chain protected peptide at room temperature and stir for 3 hrs. 2) Filtered washed with 50 mL TFA. The combined filtrate was precipitated with cold methyl tertbutyl ether (MTBE). The mixture was centrifuged (3000 rpm, 3 min) and decanted. The pellet was washed with MTBE and centrifuged.

3) Lyophilized the residue to give the intermediate 7 (6.0 g, crude)

Peptide Cyclization and Purification:

[000180] Crude peptide intermediate 7 (6.0 g, 2.89 mmol) was dissolved in 20% MeCN /H2O (3000 mL). To a stirred solution of the peptide was added the iodine solution in MeOH (0.1M, 12.0 mL) drop-wise until solution remains yellow. After ~2h LCMS showed the reaction was complete. Excess iodine was quenched by the addition of IM Na2S2O3 in water (15 uL) (turned colorless instantly). Added 100-200 mL of MeCN to decrease turbidity. Purified the solution by Prep-HPLC (A: 0.075% TFA in H2O, B: ACN) (Note 1: Method C) and re-purify by Prep-HPLC (A: 0.5% AcOH in H2O, B: ACN) (Note 1: Method D), then the product was re-lyophilized with 0.1% TFA mobile phase to give SEQ ID 137 (2448.5 mg, 97.7% purity, 36.7% yield for this step; over all yield: 35.4%) obtained as white solid. Analysis was performed using a C18 column with a flow rate of 1 mL/min (Note 2). LCMS Summary: calculated MW: 2071.4, observed MW: 1036.0 [(M+2H)/2], 691.1 [(M+3H)/3].

EXAMPLE 8: Synthesis of SEQ ID 145

cPEG5aCO-Pen(3)-N(N(Me) ₂ )-T-7MeW-Dab(NMecPEG5aCO)-Pen(3)-AEF(N(Me) ₂ )-2Nal-

THP-E-N-3Pya-Sar-CON(Me)2

Step A - Synthesis of Intermediate 8

[000181] The peptide was synthesized by standard Solid-phase Peptide Synthesis (SPPS) using Fmoc/t-Bu chemistry. The assembly was performed on a Rink-amide AM resin (220 pmol, 100-200Mesh; loading 0.35 mmol/g). First amino acid was loaded manually using an equimolar solution of Fmoc-Asp-OAll, HO At and DIC in DMF, at room temperature. Complete acylation was monitored by ninhhydrin test. The resin was then treated with 0.25Eq of Pd Tetrakis, 24 Eq of Phenylsilane in 5ml of dry DCM under N2 atmosphere for 30 min (process repeated 2 times); washed with DCM, DMF and a solution of 0.5% sodium dimethyldithiocarbamate (0.5%) and DIPEA (0.5%) in DMF. Fmoc-OSu and DIPEA (1:1, 2Eq) in DCM were added and left under stirring at room temperature for 30 minutes. Further peptide elongation was performed manually preactivating the resin with HATU (1.2Eq), DIPEA (2.2Eq) and then adding solution of DIPEA (2.2Eq) and 3Pya-Sar-CON(Me) ₂ dimer (2.2Eq, TM83) in DMF. The reaction mixture was left under stirring for Ihr at room temperature. Complete acylation was monitored by test cleavage. The resin was then placed in a MW reaction vessel and the assembly continued on the Cem Liberty Blue microwave peptide synthesizer (CEM Inc.). During peptide assembly on solid phase, the side chain protecting groups were: tert-butyl for Thr and Glu; trityl for Pen and Asn. All the amino acids were dissolved at a 0.4 M concentration in DMF. The acylation reactions were performed for 3 min at 90°C under MW irradiation with 5 folds excess of activated amino acids over the resin free amino groups. The amino acids were activated with equimolar amounts of 0.5M solution of DIC in DMF and Oxyma solution IM in DMF. Double acylation reactions were performed for 3Pyal5 & 2NallO. Fmoc deprotections were performed using 20%(V/V) piperidine in DMF. Capping of the free amino group was performed manually using cPEG5aCOOH (2.2 Eq), HATU (2 Eq) and DIPEA(4Eq) at room temperature and complete acylation was monitored by ninhhydrin test.

[000182] The resin was then treated with 0.25Eq of Pd Tetrakis, 24 Eq of phenylsilane in 5ml of DCM Dry under N2 atmosphere for 30 min (process repeated 2 times); washed with DCM, DMF and a solution of 0.5% sodium dimethyldithiocarbamate (0.5%) and DIPEA (0.5%) in DMF. Further side chain derivatization was performed manually with HATU (2Eq), DIPEA (4Eq) and 2.2Eq of cPEG5aCOOH. Reaction was completed after 2hr (monitored by ninhhydrin test).

[000183] At the end of the assembly the resin was washed with DMF, MeOH, DCM, Et2O. The peptide was cleaved from solid support using 30 ml of TFA solution (v/v) (87.5% TFA, 5% H2O, 2.5% TIPS, 5%Phenol) for approximately 1.5 hours, at room temperature. The resin was then filtered and precipitated in cold MTBE (135mL). After centrifugation, the peptide pellets were washed with fresh cold diethyl-ether to remove the organic scavengers. The process was repeated twice. Final pellets were dried, re-suspended in H2O and acetonitrile 1:1 + 0.1% TFA and stirred overnight. Then lyophilized to afford the desired linear intermediate 8 (Y= 93%). LCMS anal. calc. For C106H155N22O23S2+: 2438.97Da Da; found; 1219.4 (M+2) ²⁺

Step B - Synthesis ofSEQ ID 145

[000184] The crude peptide was dissolved in ACN\H2O (5mg\ml). Saturated Iodine in acetic acid was then added dropwise under stirring until yellow color persisted. Rxn was completed in 30 min (monitored by UPLC-MS). Solid ascorbic acid was added until the solution became clear. After lyophilization the cyclized peptide was purified by reverse-phase HPLC using preparative Waters DeltaPak C4 (200x40mm, 300A, 15pm). Mobile phase A: + 0.1% TFA, mobile phase B: Acetonitrile (ACN) + 0.1% TFA. The following gradient of eluent B was used: 15%B to 15%B over 5min, to 30%B over 25min, flow rate 80 mL/min, wavelength 214 nm. Collected fractions were lyophilized to afford SEQ ID 145 (Y= 10%) LCMS anal. calc. For C117H178N22O30S22+: 2436.95Da; found; 1218.5 (M+2) ²⁺

EXAMPLE 9:SYNTHESIS OF SEQ ID 164

[000185] The peptide was synthesized using standard Fmoc chemistry.

1) Add DMF to the vessel containing Rink Amide MBHA resin (15.0 mmol, 50 g, sub: 0.3 mmol/g) and swell for 2 hours.

2) Add 20% piperidine/DMF and mix for 30 min.

3) Drain and then DMF wash 30 sec with 5 times.

4) Add Fmoc- amino acid solution and mix 30 seconds, then add activation buffer, N2 bubbling for about 1-5 hours

5) Add 20% piperidine/DMF and mix for 30 min

6) Repeat step 2 to 5 for next amino acid coupling. The coupling reaction was monitored by ninhydrin or tetrachlor color test, and the resin was washed with DMF for 5 times. The resin was washed with MeOH for 3 times and dried by vacuum.

[000186] Monitored method:

1. Ninhydrin test: A: 5% ninhydrin /EtOH; B: 80% phenol /EtOH; C: pyridine

2. Tetrachlor color test: A: 2% tetrachlor/ DMF; B: 2% aldehyde/ DMF 110°C for 3min Peptide Cleavage:

1) Add cleavage buffer (5.0% DTT /2.5% H ₂ 012.5% TIS /90%TFA) 1000 mL to the flask containing the side chain protected peptide at room temperature and stir for 3 hrs.

2) Filtered washed with 100 mL TFA. The combined filtrate was precipitated with cold methyl tertbutyl ether (MTBE). The mixture was centrifuged (3000 rpm, 3 min) and decanted. The pellet was washed with MTBE and centrifuged.

3) Lyophilized the residue to give the intermediate 9d (30.0 g, crude)

Peptide Cyclization and Purification:

[000187] The reaction was performed for 3 batches in parallel. Crude peptide intermediate 9d (10.0 g, 4.4 mmol) was dissolved in 20% MeCN/FLO (5.0 L). To a stirred solution of the peptide was added the iodine solution in MeOH (0.1M, 15 mL) drop- wise until solution remains yellow. After ~2h LCMS showed the reaction was complete. Excess iodine was quenched by the addition of IM Na2S20a in water (15 uL) (turned colorless instantly). Added 100-200 mL of MeCN to decrease turbidity. Purified the solution by Prep- HPLC (A: 0.075% TFA in H2O, B: ACN) (Note 1: Method E) and re-purified by Prep- HPLC (A: 0.5% AcOH in H ₂ O, B: ACN) (Note 1: Method F) to give SEQ ID 164 (3.5 g, 92.2% purity, 9.9% yield for this step; over all yield: 8.7%) obtained as white solid. Analysis was performed using a C18 column with a flow rate of 1 mL/min (Note 2). LCMS Summary: calculated MW: 2268.8, observed MW: 1133.8 [(M+2H)/2], 756.2 [(M+3H)/3].

EXAMPLE 10: SYNTHESIS OF SEQ ID 181

[000188] The peptide was synthesized using standard Fmoc chemistry.

1) Add DMF to the vessel containing Rink Amide MBHA resin (15.0 mmol, 43 g, sub: 0.35 mmol/g) and swell for 2 hours.

2) Add 20% piperidine/DMF and mix for 30 min.

3) Drain and then DMF wash 30 sec with 5 times.

4) Add Fmoc- amino acid solution and mix 30 seconds, then add activation buffer, N2 bubbling for about 1-4 hours

5) Add 20% piperidine/DMF and mix for 30 min

6) Repeat step 2 to 5 for next amino acid coupling. The coupling reaction was monitored by ninhydrin or tetrachlor color test, and the resin was washed with DMF for 5 times. The resin was washed with MeOH for 3 times and dried by vacuum.

[000189] Monitored method:

1. Ninhydrin test: A: 5% ninhydrin /EtOH; B: 80% phenol /EtOH; C: pyridine

2. Tetrachlor color test: A: 2% tetrachlor/ DMF; B: 2% aldehyde/ DMF 110°C for 3min

Peptide Cleavage:

1) Add cleavage buffer (5.0% DTT /2.5% H ₂ O /2.5% TIS /90%TFA) 1000 mL to the flask containing the side chain protected peptide at room temperature and stir for 3 hrs. 2) Filtered washed with 100 mL TFA. The combined filtrate was precipitated with cold methyl tertbutyl ether (MTBE). The mixture was centrifuged (3000 rpm, 3 min) and decanted. The pellet was washed with MTBE and centrifuged.

3) Lyophilized the residue to give the intermediate 10 (30.0 g, crude)

Peptide Cyclization and Purification:

[000190] The reaction was performed for 3 batches in parallel. Crude peptide intermediate 10 (10.0 g, 4.3 mmol) was dissolved in 20% MeCN/H2O (5.0 L). To a stirred solution of the peptide was added the iodine solution in MeOH (0.1M, 17 mL) drop- wise until solution remains yellow. After ~2h LCMS showed the reaction was complete. Excess iodine was quenched by the addition of IM Na2S2C>3 in water (15 uL) (turned colorless instantly). Added 100-200 mL of MeCN to decrease turbidity. Purified the solution by Prep- HPLC (A: 0.075% TFA in H2O, B: ACN) (Note 1: Method E) and re-purified by Prep- HPLC (A: 0.5% AcOH in H ₂ O, B: ACN) (Note 1: Method F) to give SEQ ID 181 (4.5 g, 96.6% purity, 14.5% yield for this step, over all yield: 12.5% yield) obtained as white solid. Analysis was performed using a Cl 8 column with a flow rate of 1 mL/min (Note 2). LCMS Summary: calculated MW: 2314.8, observed MW: 1157.3 [(M+2H)/2], 771.7 [(M+3H)/3].

EXAMPLE I LSYNTHESIS OF SEQ ID 217 [000597] The peptide was synthesized using standard Fmoc chemistry.

1) Add DMF to the vessel containing Rink Amide MB HA resin (0.50 mmol, 1.78 g, sub: 0.28 mmol/g) and swell for 2 hours.

2) Add 20% piperidine/DMF and mix for 30 min.

3) Drain and then DMF wash 30 sec with 5 times.

4) Add Fmoc-amino acid solution and mix 30 seconds, then add activation buffer, N2 bubbling for about 1-4 hours

5) Add 20% piperidine/DMF and mix for 30 min

6) Repeat step 2 to 5 for next amino acid coupling. The coupling reaction was monitored by ninhydrin or tetrachlor color test, and the resin was washed with DMF for 5 times. The resin was washed with MeOH for 3 times and dried by vacuum.

[000598] Monitored method:

1. Ninhydrin test: A: 5% ninhydrin /EtOH; B: 80% phenol /EtOH; C: pyridine

2. Tetrachlor color test: A: 2% tetrachlor/ DMF; B: 2% aldehyde/ DMF 110°C for 3min Peptide Cleavage:

4) Add cleavage buffer (5.0% DTT /2.5% H ₂ O /2.5% TIS /90%TFA) 35 mL to the flask containing the side chain protected peptide at room temperature and stir for 3 hrs.

5) Filtered washed with 5 mL TFA. The combined filtrate was precipitated with cold methyl tertbutyl ether (MTBE). The mixture was centrifuged (3000 rpm, 3 min) and decanted. The pellet was washed with MTBE and centrifuged.

6) Lyophilized the residue to give the intermediate 11 (1.0 g, crude)

Peptide Cyclization and Purification:

[000599] Crude peptide intermediate 11 (1.0 g, 0.43 mmol) was dissolved in 20% MeCN/H2O (500 mL). To a stirred solution of the peptide was added the iodine solution in MeOH (0.1M, 6.0 mL) drop- wise until solution remains yellow. After ~2h LCMS showed the reaction was complete. Excess iodine was quenched by the addition of IM Na2S20a in water (turned colorless instantly). Added 10 mL of MeCN to decrease turbidity. Purified the solution by Prep-HPLC (A: 0.075% TFA in H2O, B: ACN) (Note 1: Method B) to give SEQ ID 217 (139.8 mg, 98.9% purity, 12.0 % yield for this step, over all yield: 10.4% yield) obtained as white solid. Analysis was performed using a C18 column with a flow rate of 1 mL/min (Note 2). LCMS Summary: calculated MW: 2314.8, observed MW: 1157.2 [(M+2H)/2], 771.6 [(M+3H)/3], BIOLOGICAL ASSAYS

IL23R Reporter Assay

[000600] Compounds were serially diluted in 100% (v/v) DMSO) and plated using an Echo acoustic dispenser (Labcyte) into 1536-well non-treated black assay plates (Corning # 9146). 3 pL of HEK293 cells containing IL-23R, IL-12R01 and a firefly luciferase reporter gene driven by a STAT-inducible promoter (Promega) were added to the plates (4000 cells/well), followed by 3 pL of 10 ng/mL IL-23 (equivalent to EC90 concentration). After 5h at 37°C, 5% CO2, 95% relative humidity, cells were placed at 20°C and treated with BioGio reagent (Promega) according to the Manufacturer’s instructions. Luminescence was measured on a Pherastar FSX (BMG LabTech). Data were normalized to IL-23 treatment (0% inhibition) and 30 pM of control inhibitor (100% inhibition), and IC50 values were determined using a 4-parameter Hill equation. Data for exemplary compounds are shown in Tables 3a and 3b.

Table 3. IL-23R

Reporter Assay Data

ND = no data

PBMC pSTAT3 assay

[000601] Cryopreserved peripheral blood mononuclear cells (PBMCs) from healthy donors were thawed and washed twice in ImmunoCult-XF T cell expansion medium (XF-TCEM) supplemented with CTL anti-aggregate wash. The cells were counted, resuspended at 2x105 cells per mL XF-TCEM supplemented with penicillin/streptomycin and 100 ng/mL IL-1 (BioLegend, 579404), and cultured in tissue culture flasks coated with anti-CD3 (eBioscience, 16-0037-85 or BD Pharmingen, 555329) at 37 °C in 5% CO2. On day 4 of culture, PBMCs were collected, washed twice in RPML1640 supplemented with 0.1% BSA (RPMLBSA), and incubated in RPMLBSA in upright tissue culture flasks for 4 hours at 37 °C in 5% CO2. Following this ‘starvation,’ a total of 6x104 cells in 30 pL RPMLBSA was transferred into each well of a 384-well plate pre-spotted with peptide or DMSO. The cells were incubated for 30 minutes prior to the addition of IL-23 at a final concentration of 5 ng/mL. The cells were stimulated with cytokine for 30 minutes at 37 °C in 5% CO2, transferred onto ice for 10 minutes, and lysed. Cell lysates were stored at -80°C until phosphorylated STAT3 was measured using the phospho-STAT panel kit (Meso Scale Discovery, K15202D). Results are provided below.

Table 4. PBMC pSTAT3 Data

PHARMACOKINETICS ASSAY

Exposed Polar Surface Area (EPSA)

I. Protocol

[000602] Exposed Polar Surface Area (EPSA) is an experimental descriptor of molecular polarity obtained from chromatographic retention in supercritical fluid chromatography (SFC).

[000603] The stationary phase (Chirex 3014(S)-valine and (R)-l -(alpha- naphthyl) ethylamine) was selected for its balance of lipophilic and polar attributes and its capacity to separate compounds with wide polarity differences. The mobile phase consists of methanol (+ Ammonium formate) and CO2. Polar compounds are retained stronger under these conditions and a low-slope gradient of methanol achieves elution based on increasing polarity of the mobile phase. Results are normalized using calibration standards generating a linear relationship between retention times and EPSA values. The unit of EPS A is A ² .

[000604] Along with the measurement of compounds of interest, a series of 8 calibration standards (see Materials) are analyzed generating a linear relationship between retention times and EPSA value. The 8 compounds used as calibration standard have their own EPSA value defined by G. Goetz based on the comparison with TPSA (see G. Goetz, L. Philippe and M. Shapiro, "EPSA: A novel supercritical fluid chromatography technique enabling the design of permeable cyclic peptides," ACS Med. Chem. Lett., vol. 5, pp. 1167-1172, 2014 for more information).The slope from the linear relationship between EPSA values of these eight compounds and their retention times is used to determine the EPSA value of each compound of interest that’s measured under the same condition using the equation as below:

EPSA = aT _R +b (eql) a: slope b: intercept TR: retention time of the compound to be analyzed

[000605] The mixture of calibrations standard is reinjected every 20 compounds to validate the stability of the retention time. II. Materials

Chemicals

[000606] The mobile phase modifier consists of ammonium formate LC_MS grade (>99%) (CAS number 540-69-2) diluted to 20mM in HPLC grade Methanol (MeOH, CAS number 67- 56-1) and liquid CO2 SFC grade (CAS number 124-38-9).

Calibration standards

[000607] Antipyrine (CAS number: 60-80-0) Chlorpromazine hydrochloride (CAS number: 69-09-0), desipramine hydrochloride (CAS number: 60-80-0), pindolol (CAS Number: 13523-86-9), diclofenac (CAS number: 15307-79-6)), m-nitro benzoic acid (CAS number: 121-92-6), bumetanide (CAS number: 28395-03-1), furosemide ( CAS number: 54-31-9) were purchased from Sigma Aldrich (Steihneim, Germany).

Instrumentation

[000608] All analyses were performed on a ultra performance convergence chromatography (UPC ² ™) apparatus (Waters, Milford, MA, USA) equipped with a sample manager, a binary solvent delivery pump (BSM), a column manager, a convergence manager (automated back pressure regulator), a photo diode array detector (DAD) with a high pressure flow cell, and a mass detector simple quadrupole QDa. After the UV detector, the effluent of the SFC was mixed with an eluent consist of mixture MeOH/water (+0.3% Ammonia) 95/5 delivered by a make up pump with a flow rate of 0.4 mL/min and then split to the QDa using a splitter. The instrument was controlled, and data were processed with Masslynx 4.1.

III. Methods and Procedures

Chromatographic conditions

[000609] The Analyses were performed using a 4.6x50mm Chirex 3014(S)-valine and (R)-l- (alpha- naphthyl) ethylamine column (Phenomenex, Le Pecq, France) with 5 pm particle and lOO pore size. The flow rate was 4 mL/min with the outlet pressure set to 14 MPa. The injection volume was 2 pL. the mobile phase composition was varied from 5% to 60% modifier at 20% I min in a linear gradient, holding at 60% for 1.45min and reverting to the original 5% until the end of the run. Data are acquired during 5 min. An equilibration time of 1 min is applied between 2 injections resulting in an injection every 6 min. each sample is analyzed in duplicate, resulting in a sample to sample turnaround time of 12 min.

[000610] The column temperature was set to 35 °C. The mass detector was used in full scan from 100 to 800 for small molecules and from 500 to 1200 for peptides. Sample preparation

[000611] Each sample is delivered by compound logistics from DMSO stock solution without dilution. The concentration is ImM and the volume is 60pL. Results are provided below in Table 5.

Table 5. EPSA Data

ND: Not determined

[000612] Although the foregoing invention has been described in some detail by way of illustration and Example for purposes of clarity of understanding, one of skill in the art will appreciate that certain changes and modifications may be practiced upon review of the specification and within the scope of the appended claims. The full scope of the invention should be determined by reference to the claims, along with their full scope of equivalents, and the specification, along with such variations. In addition, each reference provided herein is incorporated by reference in its entirety to the same extent as if each reference was individually incorporated by reference. Where a conflict exists between the instant application and a reference provided herein, the instant application shall dominate. ASPECTS OF THE PRESENT INVENTION

[000613] The following aspects illustrate and are not intended to limit scope of the present invention. Instead, these aspects provide guidance to any skilled artisan on how to prepare and use compounds, compositions and methods taught by the present invention, where such skilled artisans will appreciate that modifications may be made without departing from the spirit and scope of the invention.

In one aspect of the invention:

1. A compound of Formula (I) :

- p is 1, 2 or 3;

R ⁷ is H, or -CH ₃ ; wherein:

wherein:

AN" as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R', RJ, R ^k , R ^m , R“, R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof.

In another aspect of the invention:

2. A compound of Formula (II)

a pharmaceutically acceptable salt thereof.

In another aspect of the invention:

3. The compound of aspect 2, wherein: wherein: wherein: -

R ⁷ is H, or -CH ₃ ; wherein:

a pharmaceutically acceptable salt thereof.

In another aspect of the invention:

4. The compound of any of aspects 1 to 3 wherein wherein:

wherein:

AN" as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R ⁱ ,R ^j , R ^k , R ^m , R ⁿ , R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof.

In another aspect of the invention:

5. A compound according to Formula (III) wherein:

wherein:

R ⁴ is H, or -CH ₃ ;

wherein:

AN" as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R', R', R ^k , R ^m , R ⁿ , R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof.

In another aspect of the invention:

6. The compound of aspect 5 wherein wherein:

AN" as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R , R ^j , R ^k , R ^m , R ⁿ , R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof.

In another aspect of the invention:

7. The compound of aspect 5 wherein wherein:

AN’ as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R‘, RJ, R ^k , R ^m , R ⁿ , R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof.

In another aspect of the invention:

8. The compound of aspect 7 wherein wherein:

AN’ as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R‘, RJ, R ^k , R ^m , R ⁿ , R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof.

In another aspect of the invention:

9. The compound of aspect 5 selected from cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-K(NMeAc)- N-3Pya-Sar-CO(NHPEG3a);

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-T HP-K(NMeAc)-N-

3Pya-Sar-CO(NHPEG3a); cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-A-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-A-N-3Pya-

Sar-C0N(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal-T HP-AIB-N-3Pya-Sar- C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-AIB-Pen(3)-AEF-2Nal-THP-AIB -N-3Pya-Sar- C0N(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-T HP-APEG2Ser-N-

3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-APEG2Ser(S*)-Pen(3)-APEG3F-2 Nal-THP-

APEG2Ser(S*)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-APEG2Ser(R*)-Pen(3)-APEG3F-2 Nal-THP-

APEG2Ser(S*)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal- THP-APEG2Ser(S*)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-Cit-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-di FCpx-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-di FCpx-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -Dab(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecarn)-Pen(3)-APEG3F-2 Nal-THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-k(d)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F- 2Nal-THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; mPEG3CO-SP6-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2 Nal-THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecPEG3a)-Pen(3)-AEF-2 Nal-THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-TH P-Dab(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG5aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-T HP-Dab(NMeAc)-

N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal-T HP-Dab(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal- THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-T HP-Dab(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG5aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal- THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecarn)-Pen(3)-APEG3F-2 Nal-THP-

Dab(NMecam)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeCOmPEG6)-Pen(3)-AEF-2 Nal-THP-

Dab(NMeCOmPEG6)-N-3Pya-Sar-CON(Me)2; cPEG5aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecPEG2a)-Pen(3)-AEF-2 Nal-THP-

Dab(NMecPEG2a)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecPEG3a)-Pen(3)-AEF-2N al-THP-

Dab(NMecPEG3a)-N-3Pya-Sar-CON(Me)2;

5cpaCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(N(Me)2 )-2Nal-THP-Dap(Ac)-

N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(N(Me)2)- 2Nal-THP-Dap(Ac)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

Dap(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -Dap(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-E-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal- THP-E-N-3Pya-

Sar-C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-E-N-3Pya-

Sar-C0N(Me)2;

MeCO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF- 2Nal-THP-E-N-3Pya-

Sar-C0N(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeCOmPEG6)-Pen(3)-AEF-2 Nal-THP-E-N-

3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeCam)-Pen(3)-AEF-2Nal- THP-E-N-3Pya-Sar- C0N(Me)2; cPEG5aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecPEG5a)-Pen(3)-AEF-2 Nal-THP-E-N-

3Pya-Sar-CON(Me)2; mPEG6CO-SP6-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecPEG5a)-Pen(3)-AE F-2Nal-THP-E-

N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecarn)-Pen(3)-AEF-2Nal -THP-E-N-3Pya-Sar- C0N(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecPEG2a)-Pen(3)-AEF-2N al-THP-E-N-3Pya-

Sar-C0N(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal-T HP-E-N-3Pya-Sar-

C0N(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF(N(Me)2) -2Nal-THP-E-N-3Pya-

Sar-C0N(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(N(Me)2)- 2Nal-THP-E-N-3Pya- Sar-C0N(Me)2;

MeCO-k(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(N (Me)2)-2Nal-THP-E-

N-3Pya-Sar-CON(Me)2;

CF3CO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(N(Me)2) -2Nal-THP-E-N-

3Pya-Sar-CON(Me)2; 5cpaCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF(N(Me)2)- 2Nal-THP-E-N- 3Pya-Sar-CON(Me)2;

CF3CO-K(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF( N(Me)2)-2Nal-THP- E-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-F-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-K(Ac)-N- 3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Me)3-Pen(3)-AEF(N(Me)2)-2N al-THP-K(Me)3-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Achx-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Acpx-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Aib-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Chg-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlTMA4) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7(3NAcPh)W-K(NMeAc)-Pen(3)-MMoEF -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dap(NMeAc)-Pen(3)-TMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG2gCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3gCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-GPEG3F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

4cpgCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal -THP-K(NMeAc)-N- 3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC14)-Pen(3)-TMA PF-2Nal-THP- K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(4cpg)-Pen(3)-TMAPF-2Nal-T HP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3gCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG2gCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C14gEPEG2PEG2CO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW- Dab(NMeAc)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW- Dab(NMeAc)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(cPEG3a)-Pen(3)-TMAPF-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2 gEC12)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C14gEPEG2PEG2CO-APEG2Ser(S*)-Pen(3)-N(N(Me)2)-T-7MeW-K(PE G2PEG2gEC14)-

Pen(3)-APEG3F-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-APEG2Ser(S*)-Pen(3)-N(N(Me)2)-T-7MeW-K(PE G2PEG2gEC12)-

Pen(3)-APEG3F-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C14gEPEG2PEG2CO-APEG2Ser(S*)-Pen(3)-N(N(Me)2)-T-7MeW-K(NM eAc)-Pen(3)-

APEG3F-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-APEG2Ser(S*)-Pen(3)-N(N(Me)2)-T-7MeW-K(NM eAc)-Pen(3)-

APEG3F-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-TMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Cit-Pen(3)-TMAPF-2Nal-THP-K (NMeAc)-N-3Pya- Sar-C0N(Me)2;

MeCO-r-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal -THP-K(NMeAc)-N- 3Pya-Sar-CON(Me)2; MeCO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

5cpaCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal -THP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-hFTMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlDMA4m PEG)-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlMMo4) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlTMA5) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlTMA3) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlTMA2) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlTMAl) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4N3)-2Nal -THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Me)3-Pen(3)-TMAPF-2Nal-TH P-K(NMeAc)-N-

3Pya-Sar-CON(Me)2;

C14gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG 2gEC14)-Pen(3)-

TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C14gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)- Pen(3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG 2gEC12)-Pen(3)-

TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)- Pen(3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(N(Me)2) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-TH P-K(NMeAc)-N- 3Pya-Sar-CON(Me)2;

MeCO-APEG2Ser(S*)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3) -APEG3F-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-APEG2Ser(R*)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3) -APEG3F-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-TMAPF-2Nal -THP-

K(NMeAC)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OZOXIMECh )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OEOXIMECh )-2Nal-THP- K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4G)-2Nal- THP-K(NMeAc)- N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlMME)- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlTMA4) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-dFPPEG3F-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-NPyPEG3F-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMA8F-2Nal- THP-K(NMeAc)- N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7(3NAcPh)W-K(NMeAc)-Pen(3)-TMAPF -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMA6F-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Diazabiclyc looctane6F-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlChC16 )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlClaC8 )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TzlChmPEG3- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TzlChmPEG-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Tzl(Ch)-2Na l-THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlCh)-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlChmPE G)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlTMA4) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlChmPE G3)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(SPD)-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-MMoPF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Piperazineq uatF-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-mPEG3TMA4F- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-morfTMA4F-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-DMTASF-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-APEG2Ser(R*)-Pen(3)-APEG3F-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-APEG2Ser(S*)-Pen(3)-APEG3F-2 Nal-THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(BisPEG2 a)(S*)-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(BisPEG2 a)(RS)-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(aPEG2a) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TBAPEG3F-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-MTASF-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NMe3)-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-YC8CO(NHPEG 3a)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen -Pen(3)-TMAPF-2Nal-THP-

K(NMeAc)-N-3 cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-APEG2Ser(R*)-Pen(3)-TMAPF-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-APEG2Ser-Pen(3)-AEF-2Nal-TH P-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-APEG2Ser(R*)-Pen(3)-AEF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-APEG3F-2Nal-TH P-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-YC8COPip-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NMeBism PEG3)-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NMe2mPE G3)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(PEG2a)- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NMePEG2 a)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(C9OH)-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(MePrpa) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-APEG2ser-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APE G3F-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-NPyEF-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMA3F-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMA3F-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-mPEG2TMA2F- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-mPEG2TMA4F- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMA4F-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; mPEG3CO-SP6-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-MPzPEG3F-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-MMPEG3F-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-ACHMF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMePEG3a)-Pen(3)-APEG3F-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-k(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3 F-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-DMMMF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecarn)-Pen(3)-APEG3F-2 Nal-THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-ACHMF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF((Ch)cPE G3a)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(AcCh)-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NsCh)-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(BisMEP) )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-DMPMF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG2F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-MMoEF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-4DMPzEF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-T HP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-4DMPEF-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal- THP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(N(Me)2)- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

CF3CO-Pen(3)-N(N(Me)2)-T-7CF3W-K(NMeAc)-Pen(3)-AEF(N(Me)2 )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

CF3CO-Pen(3)-N(N(Me)2)-T-7CF3W-K(NMeAc)-Pen(3)-AEF-2Nal-T HP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; CF3CO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-THP-K (NMeAc)-N- 3Pya-Sar-CON(Me)2;

CF3CO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(N(Me)2) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal- THP-

K(NMePEG3a)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC12)-Pen(3)-TMA PF-2Nal-THP-

K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF- 2Nal-THP-K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)- Pen(3)-TMAPF- 2Nal-THP-K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)- Pen(3)-TMAPF- 2Nal-K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC14)-Pen(3)-TMA PF-2Nal-THP-

K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2;

C14gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)- Pen(3)-TMAPF- 2Nal-THP-K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-L-N-3Pya-

Sar-C0N(Me)2;

5cpaCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF(N(Me) 2)-2Nal-Pip(NMe2)-

Q(N(Me)2)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

Q(N(Me)2)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF(N(Me)2 )-2Nal-THP-

Q(N(Me)2)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-T HP-Q(N(Me)2)-N- 3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF(N(Me)2) -2Nal-THP-

Q(N(Me)2)-N-3Pya-Sar-CON(Me)2;

5cpaCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-TMAPF-2Na l-THP-Q(N(Me)2)-N-

3Pya-Sar-CON(Me)2;

CF3CO-k(5cpa)-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AE F(N(Me)2)-2Nal-THP-

Q(N(Me)2)-N-3Pya-Sar-CON(Me)2;

5cpaCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF(N(Me) 2)-2Nal-THP-

Q(N(Me)2)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-W-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(BisMEPa )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal- THP-

Dab(NMeAc)-N-3Pya-Sar-CONH(PEG3a); cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAC)-N-3Pya-NMeK(PEG2PEG2C12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG2C14)-CONH2;

C12gEPEG2PEG2CO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAP F-2Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC12)-Pen(3)-TMA PF-2Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen( 3)-TMAPF-2Nal- THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAC)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAC)-N-

3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -

K(PEG2PEG2gEC12)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC14)-Pen(3)-TMA PF-2Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; C14gEPEG2PEG2CO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2 Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen( 3)-TMAPF-2Nal-

THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAC)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -

K(PEG2PEG2gEC14)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG2K(PEG2PEG2gEC12)2)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG2K(PEG2PEG2PEG2PEG2gEC12)2)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -

K(PEG2PEG2PEG2gEC12))-N-3Pya-NMeK(PEG2PEG2PEG2gEC12)-CONH 2; cPEG3aCO-k(PEG2PEG2PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K( Ac)-Pen(3)-

TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG2PEG2PEG2gEC12 )-CONH2; cPEG3aCO-k(PEG2PEG6gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen( 3)-TMAPF-2Nal-

THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG6gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG6gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG6gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(SP6PEG2PEG2C12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(SP6PEG2PEG2gEC12)-CONH2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-THP-K( Ac)-N-3Pya-Sar-

C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-TH P-K(Ac)-N-3Pya-

Sar-C0NH2; mPEG3CO-SP6-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal -THP-K(Ac)-N-

3Pya-Sar-CONH2;

CF3CO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-THP-K (Ac)-N-3Pya-Sar-

C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-TMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CONH2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-THP -K(NMeAc)-N-3Pya- Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-TH P-K(NMeAc)-N-

3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-TH P-Q(N(Me)2)-N-

3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-T HP-Q(N(Me)2)-N-

3Pya-Sar-CONH2; mPEG3CO-SP6-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Na l-THP-

Q(N(Me)2)-N-3Pya-Sar-CONH2;

CF3CO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(N(Me)2) -2Nal-THP-

Q(N(Me)2)-N-3Pya-Sar-CONH2; mPEG3CO-SP6-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal -THP-QNMe2-

N-3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(NMe2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NHCh)-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; or a pharmaceutically acceptable salt thereof.

In another aspect of the invention:

10. The compound of aspect 3 wherein:

R ⁹ is -NHCH ₃ , -N(CH ₃ ) ₂ , -NH(CH ₂ CH ₂ O) ₂ CH3, -N(CH ₃ )(CH ₂ CH ₂ O) ₂ CH3, - wherein: y is 2, 4, or 6; a pharmaceutically acceptable salt thereof.

In another aspect of the invention:

11. A compound of Formula (IV):

- p is 1, 2 or 3;

R ⁷ is H, or -CH3; wherein:

wherein:

AN" as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R , R', R ^k , R ^m , R ⁿ , R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof.

In another aspect of the invention:

12. The compound of aspect 11 wherein: AN" is chloride; or a pharmaceutically acceptable salt thereof.

In another aspect of the invention:

13. The compound of aspect 11 selected from cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-4DMPEF-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-4DMPzEF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-ACHMF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-ACHMF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-THP-E-N-3Pya- Sar-CONH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-THP-K(Ac)-N-3 Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-THP-Q(N(M e)2)-N-3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-THP-Q(N(M e)2)-N-3Pya-Sar- C0N(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-THP-E-N-3P ya-Sar-CONH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-THP-K(Ac)- N-3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-THP-K(NMeA c)-N-3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-THP-K(NMe Ac)-N-3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-THP-Dab(NM eAc)-N-3Pya- Sar-CONH2; cPEG3aCO-Pen(3)-N-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-THP-Dab(N MeAc)-N-3Pya-

Sar-CONH2; cPEG3aCO-Pen(3)-N-T-7(3NAcPh)W-K(Ac)-Pen(3)-AEF-2Nal-THP-E-N -3Pya-Sar-

C0NH2; cPEG3aCO-Pen(3)-N-T-7(3NAcPh)W-K(Ac)-Pen(3)-AEF-2Nal-THP-K(A c)-N-3Pya-Sar- C0NH2; cPEG3aCO-r-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-THP-E-N-5Me PyridinAla-Sar- C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-T HP-Q(N(Me)2)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-AIB-Pen(3)-AEF-2Nal-THP-AIB -N-3Pya-Sar- C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-T HP-Q(N(Me)2)-N-

3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-TH P-K(Ac)-N-3Pya- Sar-C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-TH P-Q(N(Me)2)-N-

3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-T HP-Dab(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal- THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-TH P-K(NMeAc)-N-

3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal- THP-K(NMeAc)- N-3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal- THP-E-N-3Pya- Sar-C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-TH P-Dab(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-di FCpx-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-di FCpx-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal- THP-

Dab(NMeAc)-N-3Pya-Sar-CONH(PEG3a); cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecPEG3a)-Pen(3)-AEF-2 Nal-THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-APEG2Ser-Pen(3)-AEF-2Nal-TH P-K(NMeAc)-N- 3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-APEG2Ser(R*)-Pen(3)-AEF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-TH P-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF((Ch)cPE G3a)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(AcCh)-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(aPEG2a) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(BisMEP) )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(BisMEPa )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(BisPEG2 a)(RS)-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(BisPEG2 a)(S*)-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF(G)-2Nal-THP-K(Ac)- N-3Pya-Sar-

C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(MePrpa) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF(N(Me)2 )-2Nal-THP-

Q(N(Me)2)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(N(Me)2) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(NMe2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NHCh)-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NMe2mPE G3)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NMe3)-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NMeBism PEG3)-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NMePEG2 a)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NsCh)-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(PEG2a)- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(SPD)-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG2F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-A-T-7MeW-A-Pen(3)-APEG3F-2Nal-A-K(NMeAc)-N-3 Pya-Sar-

C0N(Me)2; cPEG3aCO-Pen(3)-APEG2Ser(S*)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-Dab(Me)3-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-F-T-7MeW-F-Pen(3)-APEG3F-2Nal-F-K(NMeAc)-N-3 Pya-Sar- C0N(Me)2; cPEG3aCO-Pen(3)-Gab-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal-THP-K (NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-L-T-7MeW-L-Pen(3)-APEG3F-2Nal-L-K(NMeAc)-N-3 Pya-Sar-

C0N(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-APEG3F-2Nal-THP-K(Ac)- N-3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal-THP-K(N MeAc)-N-3Pya- Sar-C0NH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal-THP-K(N MeAc)-N-3Pya- Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-E-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-K(Ac)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-APEG3F-2Nal-TH P-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

Dap(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-A-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-L-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-F-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-W-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-W-T-7MeW-W-Pen(3)-APEG3F-2Nal-W-K(NMeAc)-N-3 Pya-Sar- C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-dFPPEG3F-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Diazabiclyc looctane6F-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-DMMMF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-DMPMF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-DMTASF-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4G)-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-F(4N3)-2Nal-THP-K(Ac)- N-3Pya-Sar-

C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4N3)-2Nal -THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlDMA4m PEG)-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlMME)- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-F(4TzlMMo3)-2Nal-THP-K (Ac)-N-3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlMMo4) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-F(4TzlTMAl)-2Nal-THP-K (Ac)-N-3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlTMAl) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlTMA2) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-F(4TzlTMA3)-2Nal-THP-K (Ac)-N-3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlTMA3) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-F(4TzlTMA4)-2Nal-THP-K (Ac)-N-3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlTMA4) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlTMA5) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-GPEG3F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-hFTMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-MMoEF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7(3NAcPh)W-K(NMeAc)-Pen(3)-MMoEF -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-MMoPF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-MMPEG3F-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-morfTMA4F-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-mPEG2TMA2F- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-mPEG2TMA4F- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-mPEG3TMA4F- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-MPzPEG3F-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-MTASF-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-NPyEF-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-NPyPEG3F-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Piperazineq uatF-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TBAPEG3F-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMA3F-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMA3F-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMA4F-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMA6F-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMA8F-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(cPEG3a)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(Me)3-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(Me)3-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-Ach x-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC12)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2 Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-K(PEG2PEG2gEC12)-T-7MeW-K(N MeAc)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC12)-T-7MeW-K(NMeAc)-Pen(3)-TMAP F-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC12)-T-7MeW-K(PEG2PEG2gEC12)-Pen (3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC12)-T-7MeW-K(NMeAc)-Pen(3)-TMAP F-2Nal-THP-

K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2 Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(N MeAc)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(NMeAc)-Pen(3)-TMAP F-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(PEG2PEG2gEC14)-Pen (3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(NMeAc)-Pen(3)-TMAP F-2Nal-THP-

K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-THP-K(NM eAc)-N-3Pya- Sar-C0NH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-THP-K(NM eAc)-N-3Pya- Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal-THP-Dab( NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-Dab(NMeAc)-Pen(3)-TMAPF-2Nal-THP-K( NMeAC)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-A-N-3Py a-Sar- C0N(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-K(PEG2P EG2gEC12)-N-

3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-K(NMeAc )-N-3Pya-

NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-E-N-3Py a-Sar-CONH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-K(Ac)-N -3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N-T-7(3NAcPh)W-K(Ac)-Pen(3)-TMAPF-2Nal-THP-E -N-3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N(N(Me))-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-T HP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-E-N-3Pya- Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-K(NMeAc)- N-3Pya-Sar-CO(NHPEG3a); cPEG3aCO-Pen -Pen(3)-TMAPF-2Nal-THP-

K(NMeAc)-N-3 cPEG3aCO-Pen -Pen(3)-TMAPF-2Nal-THP-

K(NMeAc)-N-3 cPEG3aCO-Pen(3)-N(N(Me)2)-T-7(3NAcPh)W-K(NMeAc)-Pen(3)-TMAPF -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAC)-N-3Pya-NMeK(PEG2PEG2C12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -Dab(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

Q(N(Me)2)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-TMAPF-2Nal -THP-

K(NMeAC)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAC)-N-

3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAC)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAC)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-A-N-3Pya- Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-K(NMeAc)- N-3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-Cit-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Me)3-Pen(3)-TMAPF-2Nal-TH P-K(NMeAc)-N- 3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Acpx-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Achx-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Chg-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Aib-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Cit-Pen(3)-TMAPF-2Nal-THP-K (NMeAc)-N-3Pya- Sar-C0N(Me)2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen( 3)-TMAPF-2Nal-

THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen( 3)-TMAPF-2Nal-

THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -

K(PEG2PEG2gEC14)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC12)-Pen(3)-TMA PF-2Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -

K(PEG2PEG2gEC12)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC14)-Pen(3)-TMA PF-2Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-TMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG2C14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG6gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG6gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-TMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CONH2; cPEG3aCO-k(PEG2PEG6gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen( 3)-TMAPF-2Nal-

THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG6gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG2K(PEG2PEG2gEC12)2)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -

K(PEG2PEG2PEG2gEC12))-N-3Pya-NMeK(PEG2PEG2PEG2gEC12)-CONH 2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2 gEC12)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(cPEG3a)-Pen(3)-TMAPF-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(4cpg)-Pen(3)-TMAPF-2Nal-T HP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF- 2Nal-THP-K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC14)-Pen(3)-TMA PF-2Nal-THP- K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC12)-Pen(3)-TMA PF-2Nal-THP-

K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K( Ac)-Pen(3)-

TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG2PEG2PEG2gEC12 )-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N- 3Pya-NMeK(SP6PEG2PEG2C12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(SP6PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N- 3Pya-NMeK(PEG2PEG2K(PEG2PEG2PEG2PEG2gEC12)2)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC14)-Pen(3)-TMA PF-2Nal-THP-

K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dap(NMeAc)-Pen(3)-TMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -Dap(NMeAc)-N- 3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Tzl(Ch)-2Na l-THP-K(NMeAc)- N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TzlChmPEG-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TzlChmPEG3- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(C9OH)-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OEOXIMECh )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlCh)-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlChC16 )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlClaC8 )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlChmPE G)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlChmPE G3)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlTMA4) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlTMA4) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OZOXIMECh )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-YC8CO(NHPEG 3a)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-YC8COPip-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3gCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3gCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; or a pharmaceutically acceptable salt thereof. In another aspect of the invention:

14. A compound of Formula (V)

wherein:

AN" as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R', R', R ^k , R ^m , R ⁿ , R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof. In another aspect of the invention:

15. The compound of aspect 14 which is

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-d K-

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-d L-

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-F -

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-H -

NMeDTyr-C0NH2;

MeCO-r-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-E-N-H-

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-P af-

NMeDTyr-C0NH2;

MeCO-r-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-THP-E-N-h-

NMeDTyr-C0NH2;

MeCO-r-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-THP-E-N-N-

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-N -

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-v -

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-t -

NMeDTyr-C0NH2;

MeCO-r-Pen(3)-N-T-7MeW-Cit-Pen(3)-AEF-2Nal-aMeL-E-N-k-NMe DTyr- C0NH2;

MeCO-r-Pen(3)-N-T-7MeW-Cit-Pen(3)-AEF-2Nal-aMeL-E-N-h-NMe DTyr- C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-o m- NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-s -

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-f -

NMeDTyr-C0NH2; MeCO-Pen(3)-N-T-7MeW-Y-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-k-

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-4AmPhe-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N- k-

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-Paf(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N -k-

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-y -

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-Cit-Pen(3)-AEF-2Nal-aMeL-K(Ac)-N-k-

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-h -

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-b Ala-

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-b Ala-

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-b Ala-

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-3 Pya-

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-3 pya-

NMeDTyr-C0NH2;

MeCO-r-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-THP-E-N-3Pya -

NMeDTyr-C0NH2;

MeCO-r-Pen(3)-Q-T-W-Q-Pen(3)-AEF-2Nal-THP-aMeE-N-F-NMeDTy r- C0NH2;

MeCO-r-Pen(3)-Q-T-W-Q-Pen(3)-AEF-2Nal-THP-E-N-N-NMe DTyr- C0NH2; or a pharmaceutically acceptable salt thereof.

In another aspect of the invention:

16. A compound of Formula (VI)

wherein:

R ⁴ is H, or -CH ₃ ;

wherein:

AN" as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R', R', R ^k , R ^m , R ⁿ , R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof.

In another aspect of the invention:

17. The compound of aspect 16 wherein

AN" is chloride; or a pharmaceutically acceptable salt thereof.

In another aspect of the invention:

18. The compound of aspect 16 which is cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAC)-N-3Pya-NMeK(PEG2PEG2C12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N- 3Pya-NMeK(PEG2PEG2C14)-CONH2;

C12gEPEG2PEG2CO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAP F-2Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC12)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2 Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-K(PEG2P EG2gEC12)-N-

3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-K(NMeAc )-N-3Pya-

NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAC)-N-

3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAC)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen( 3)-TMAPF-2Nal- THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC12)-Pen(3)-TMA PF-2Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -

K(PEG2PEG2gEC12)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2;

C14gEPEG2PEG2CO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAP F-2Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2 Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAC)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen( 3)-TMAPF-2Nal-

THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -

K(PEG2PEG2gEC14)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC14)-Pen(3)-TMA PF-2Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N- 3Pya-NMeK(PEG2PEG2K(PEG2PEG2gEC12)2)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N- 3Pya-NMeK(PEG2PEG2K(PEG2PEG2PEG2PEG2gEC12)2)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -

K(PEG2PEG2PEG2gEC12))-N-3Pya-NMeK(PEG2PEG2PEG2gEC12)-CONH 2; cPEG3aCO-k(PEG2PEG2PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K( Ac)-Pen(3)-

TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG2PEG2PEG2gEC12 )-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG6gEC12)-CONH2; cPEG3aCO-k(PEG2PEG6gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen( 3)-TMAPF-2Nal-

THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG6gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG6gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(SP6PEG2PEG2C12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(SP6PEG2PEG2gEC12)-CONH2;

4cpgCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal -THP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2;

5cpaCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-TMAPF-2Na l-THP-Q(N(Me)2)-N-

3Pya-Sar-CON(Me)2;

5cpaCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal -THP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)- Pen(3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG 2gEC12)-Pen(3)-

TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)- Pen(3)-TMAPF-

2Nal-THP-K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)- Pen(3)-TMAPF-

2Nal-K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW- Dab(NMeAc)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; C14gEPEG2PEG2CO-hk(Me)3-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(NMe Ac)-Pen(3)-

TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C14gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)- Pen(3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C14gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG 2gEC14)-Pen(3)-

TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C14gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)- Pen(3)-TMAPF-

2Nal-THP-K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2;

C14gEPEG2PEG2CO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW- Dab(NMeAc)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG2gCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(cPEG3a)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(Me)3-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(Me)3-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-Ach x-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-K(PEG2PEG2gEC12)-T-7MeW-K(N MeAc)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC12)-T-7MeW-K(NMeAc)-Pen(3)-TMAP F-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC12)-T-7MeW-K(PEG2PEG2gEC12)-Pen (3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC12)-T-7MeW-K(NMeAc)-Pen(3)-TMAP F-2Nal-THP-

K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(N MeAc)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(NMeAc)-Pen(3)-TMAP F-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(PEG2PEG2gEC14)-Pen (3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(NMeAc)-Pen(3)-TMAP F-2Nal-THP- K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-THP-K(NM eAc)-N-3Pya- Sar-C0NH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-THP-K(NM eAc)-N-3Pya- Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal-THP-Dab( NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-Dab(NMeAc)-Pen(3)-TMAPF-2Nal-THP-K( NMeAC)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-A-N-3Py a-Sar- C0N(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-E-N-3Py a-Sar-CONH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-K(Ac)-N -3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N-T-7(3NAcPh)W-K(Ac)-Pen(3)-TMAPF-2Nal-THP-E -N-3Pya-Sar-

C0NH2; cPEG3aCO-Pen(3)-N(N(Me))-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-T HP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-E-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CO(NHPEG3a); cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-APEG2Ser(S*)-Pen(3)-TMAPF-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen -Pen(3)-TMAPF-2Nal-THP-

K(NMeAc)-N-3 cPEG3aCO-Pen(3)-N(N(Me)2)-T-7(3NAcPh)W-K(NMeAc)-Pen(3)-TMAPF -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -Dab(NMeAc)-N- 3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

Q(N(Me)2)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-TMAPF-2Nal -THP-

K(NMeAC)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-A-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-K(NMeAc)- N-3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-Cit-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Me)3-Pen(3)-TMAPF-2Nal-TH P-K(NMeAc)-N- 3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Acpx-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Achx-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Chg-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Aib-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Cit-Pen(3)-TMAPF-2Nal-THP-K (NMeAc)-N-3Pya- Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-TMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-TMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CONH2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2 gEC12)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(cPEG3a)-Pen(3)-TMAPF-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(4cpg)-Pen(3)-TMAPF-2Nal-T HP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC14)-Pen(3)-TMA PF-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC12)-Pen(3)-TMA PF-2Nal-THP-

K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC14)-Pen(3)-TMA PF-2Nal-THP-

K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dap(NMeAc)-Pen(3)-TMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -Dap(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3gCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-THP-K(NMe Ac)-N-3Pya-Sar- C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-K(Ac)-N- 3Pya-Sar-CONH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-E-N-3Pya -Sar-CONH2;

MeCO-k(Me)3-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-E -N-3Pya-Sar- C0NH2;

MeCO-k(Me)3-Pen(3)-N-T-7(3NAcPh)W-K(Ac)-Pen(3)-TMAPF-2Nal -THP-E-N-3Pya-Sar- C0NH2; MeCO-k(Me)3-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-K(Ac )-N-3Pya-Sar- C0NH2;

MeCO-Pen(3)-N-T-7(3NAcPh)W-K(Ac)-Pen(3)-TMAPF-2Nal-THP-E- N-3Pya-Sar-CONH2;

MeCO-Pen(3)-N-T-7(3NAcPh)W-K(Ac)-Pen(3)-TMAPF-2Nal-THP-K( Ac)-N-3Pya-Sar- C0NH2;

MeCO-r-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-E-N-3P ya-Sar-CONH2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-T HP-K(NMeAc)-N- 3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-T HP-K(NMeAc)-N- 3Pya-Sar-CO(NHPEG3a);

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-T HP-APEG2Ser-N- 3Pya-Sar-CON(Me)2;

MeCO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAP F-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-r-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal -THP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; or a pharmaceutically acceptable salt thereof.

In another aspect of the invention:

19. A compound which is:

or a pharmaceutically acceptable salt thereof.

In another aspect of the invention:

20. A compound which is

pharmaceutically acceptable salt thereof.

In another aspect of the invention:

21. The compound or pharmaceutically acceptable salt thereof, according to any one of aspects 19 and 20 wherein the quarternary ammonium salts as shown in the chemical structures therein include a counterion AN" selected from: acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate.

In another aspect of the invention:

22. A pharmaceutical composition comprising the peptide inhibitor or pharmaceutically acceptable salt thereof of any one of aspect 1-21, and a pharmaceutically acceptable carrier, excipient, or diluent.

In another aspect of the invention:

23. The pharmaceutical composition of aspect 22, further comprising an enteric coating.

In another aspect of the invention: 24. The pharmaceutical composition of aspect 22, wherein the enteric coating protects and releases the pharmaceutical composition within a subject’s lower gastrointestinal system.

In another aspect of the invention:

24. A method for treating an Inflammatory Bowel Disease (IBD), ulcerative colitis, Crohn’s disease, Celiac disease (nontropical Sprue), enteropathy associated with seronegative arthropathies, microscopic colitis, collagenous colitis, eosinophilic gastroenteritis, colitis associated with radio- or chemo-therapy, colitis associated with disorders of innate immunity as in leukocyte adhesion deficiency- 1, chronic granulomatous disease, glycogen storage disease type lb, Hermansky-Pudlak syndrome, Chediak-Higashi syndrome, and Wiskott- Aldrich Syndrome, pouchitis resulting after proctocolectomy and ileoanal anastomosis, gastrointestinal cancer, pancreatitis, insulin-dependent diabetes mellitus, mastitis, cholecystitis, cholangitis, pericholangitis, chronic bronchitis, chronic sinusitis, asthma, psoriasis, psoriatic arthritis, or graft versus host disease in a subject, comprising providing to the subject an effective amount of the peptide inhibitor or peptide inhibitor or pharmaceutically acceptable salt thereof of any one of aspects 1-21, or the pharmaceutical composition of any one of aspects 22-24.

In another aspect of the invention:

26. The method of aspect 25, wherein the pharmaceutical composition is provided to the subject by an oral, parenteral, intravenous, peritoneal, intradermal, subcutaneous, intramuscular, intrathecal, inhalation, vaporization, nebulization, sublingual, buccal, parenteral, rectal, intraocular, inhalation, topically, vaginal, or topical route of administration.

In another aspect of the invention:

27. The method of aspect 24 for treating Inflammatory Bowel Disease (IBD), ulcerative colitis, or Crohn’s disease, wherein the pharmaceutical composition is provided to the subject orally.

In another aspect of the invention:

28. The method of aspect 24 for treating psoriasis, wherein the pharmaceutical composition is provided to the subject orally, topically, parenterally, intravenously, subcutaneously, peritonealy, or intravenously. In another aspect of the invention:

29. The peptide inhibitor or peptide inhibitor or pharmaceutically acceptable salt thereof of any one of aspects 1-21, or the pharmaceutical composition of any one of aspects 22-24, for use in the treatment of an Inflammatory Bowel Disease (IBD), ulcerative colitis, Crohn’s disease, Celiac disease (nontropical Sprue), enteropathy associated with seronegative arthropathies, microscopic colitis, collagenous colitis, eosinophilic gastroenteritis, colitis associated with radio- or chemo-therapy, colitis associated with disorders of innate immunity as in leukocyte adhesion deficiency- 1, chronic granulomatous disease, glycogen storage disease type lb, Hermansky-Pudlak syndrome, Chediak-Higashi syndrome, and Wiskott- Aldrich Syndrome, pouchitis resulting after proctocolectomy and ileoanal anastomosis, gastrointestinal cancer, pancreatitis, insulin-dependent diabetes mellitus, mastitis, cholecystitis, cholangitis, pericholangitis, chronic bronchitis, chronic sinusitis, asthma, psoriasis, psoriatic arthritis, or graft versus host disease in a subject, comprising providing to the subject an effective amount of the peptide inhibitor or peptide inhibitor or pharmaceutically acceptable salt thereof of any one of aspects 1-21, or the pharmaceutical composition of any one of aspects 22-24.

In another aspect of the invention:

30. The composition for use according to aspect 29, wherein the pharmaceutical composition is provided to the subject by an oral, parenteral, intravenous, peritoneal, intradermal, subcutaneous, intramuscular, intrathecal, inhalation, vaporization, nebulization, sublingual, buccal, parenteral, rectal, intraocular, inhalation, topically, vaginal, or topical route of administration.

In another aspect of the invention:

31. The composition for use according to aspect 29 for treating Inflammatory Bowel Disease (IBD), ulcerative colitis, or Crohn’s disease, wherein the pharmaceutical composition is provided to the subject orally.

In another aspect of the invention:

32. The composition for use according to aspect 29 for treating psoriasis, wherein the pharmaceutical composition is provided to the subject orally, topically, parenterally, intravenously, subcutaneously, peritonealy, or intravenously. In another aspect of the invention:

33. A compound which is selected from of any of the tables 1A, IB, 1C, ID, and IE or pharmaceutically acceptable salts thereof.

In another aspect of the invention:

34. A compound of Formula (I) or (II) wherein pharmaceutically acceptable salt thereof.

35. A compound of Formula (VII)

-

R ⁷ is H, or -CH ₃ ; wherein:

wherein:

AN" as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R', RJ, R ^k , R ^m , R“, R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof.

In another aspect of the invention 36. A compound of Formula (VIII)

-

wherein:

AN" as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R', R', R ^k , R ^m , R ⁿ , R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof.

37. In another aspect of the invention:

A compound of Formula (IX)

-

wherein:

AN" as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R', R', R ^k , R ^m , R ⁿ , R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof.

In another aspect of the invention 38. A compound of Formula (X)

-

R ⁴ is H, or -CH ₃ ;

wherein:

AN" as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R', R', R ^k , R ^m , R ⁿ , R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof.

In another aspect of the invention:

39. The compound of aspect 14, wherein X15 is 3-pyridyl alanine; or a pharmaceutically acceptable salt thereof. Enumerated clauses

[000614] The present disclosure further includes the following enumerated clauses.

Clause 1.

1. A compound of Formula (I) :

- p is 1, 2 or 3;

R ⁷ is H, or -CH ₃ ; wherein:

wherein:

AN" as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R', RJ, R ^k , R ^m , R“, R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof.

Clause 2. 2. A compound of Formula (II) a pharmaceutically acceptable salt thereof.

Clause 3.

3. The compound of clause 2, wherein: wherein:

R ⁷ is H, or -CH ₃ ; wherein:

a pharmaceutically acceptable salt thereof.

Clause 4.

4. The compound of any of clauses 1 to 3 wherein wherein:

wherein:

AN" as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R ⁱ ,R ^j , R ^k , R ^m , R ⁿ , R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof.

Clause 5.

5. A compound according to Formula (III) wherein:

wherein:

R ⁴ is H, or -CH ₃ ;

wherein:

AN" as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R', R', R ^k , R ^m , R ⁿ , R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof.

Clause 6.

6. The compound of clause 5 wherein wherein:

AN" as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R‘,Rj, R ^k , R ^m , R ⁿ , R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof.

Clause 7.

7. The compound of clause 5 wherein wherein:

AN" as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R',R', R ^k , R ^m , R ⁿ , R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof.

Clause 8.

8. The compound of clause 6 wherein wherein:

AN" as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R',R', R ^k , R ^m , R ⁿ , R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof.

Clause 9.

9. The compound of clause 5 selected from cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CO(NHPEG3a);

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-T HP-K(NMeAc)-N-

3Pya-Sar-CO(NHPEG3a); cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-A-N-3Pya-

Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-A-N-3Pya- Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal-T HP-AIB-N-3Pya-Sar- C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-AIB-Pen(3)-AEF-2Nal-THP-AIB -N-3Pya-Sar-

C0N(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-T HP-APEG2Ser-N-

3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-APEG2Ser(S*)-Pen(3)-APEG3F-2 Nal-THP-

APEG2Ser(S*)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-APEG2Ser(R*)-Pen(3)-APEG3F-2 Nal-THP-

APEG2Ser(S*)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal- THP-APEG2Ser(S*)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-Cit-N-3Pya-

Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-di FCpx-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-di FCpx-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -Dab(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecarn)-Pen(3)-APEG3F-2Nal -THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-k(d)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F- 2Nal-THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; mPEG3CO-SP6-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2 Nal-THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecPEG3a)-Pen(3)-AEF-2 Nal-THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-TH P-Dab(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG5aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-T HP-Dab(NMeAc)-

N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal-T HP-Dab(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal- THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-T HP-Dab(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG5aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal- THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecarn)-Pen(3)-APEG3F-2 Nal-THP-

Dab(NMecam)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeCOmPEG6)-Pen(3)-AEF-2 Nal-THP-

Dab(NMeCOmPEG6)-N-3Pya-Sar-CON(Me)2; cPEG5aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecPEG2a)-Pen(3)-AEF-2 Nal-THP-

Dab(NMecPEG2a)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecPEG3a)-Pen(3)-AEF-2N al-THP-

Dab(NMecPEG3a)-N-3Pya-Sar-CON(Me)2; 5cpaCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(N(Me)2)-2 Nal-THP-Dap(Ac)- N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(N(Me)2)- 2Nal-THP-Dap(Ac)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

Dap(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -Dap(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-E-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal- THP-E-N-3Pya- Sar-C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-E-N-3Pya-

Sar-C0N(Me)2;

MeCO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF- 2Nal-THP-E-N-3Pya-

Sar-C0N(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeCOmPEG6)-Pen(3)-AEF-2 Nal-THP-E-N-

3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeCam)-Pen(3)-AEF-2Nal- THP-E-N-3Pya-Sar- C0N(Me)2; cPEG5aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecPEG5a)-Pen(3)-AEF-2 Nal-THP-E-N-

3Pya-Sar-CON(Me)2; mPEG6CO-SP6-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecPEG5a)-Pen(3)-AE F-2Nal-THP-E-

N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecarn)-Pen(3)-AEF-2Nal -THP-E-N-3Pya-Sar- C0N(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecPEG2a)-Pen(3)-AEF-2N al-THP-E-N-3Pya-

Sar-C0N(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal-T HP-E-N-3Pya-Sar-

C0N(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF(N(Me)2) -2Nal-THP-E-N-3Pya-

Sar-C0N(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(N(Me)2)- 2Nal-THP-E-N-3Pya-

Sar-C0N(Me)2; MeCO-k(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(N(Me )2)-2Nal-THP-E-

N-3Pya-Sar-CON(Me)2;

CF3CO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(N(Me)2) -2Nal-THP-E-N-

3Pya-Sar-CON(Me)2;

5cpaCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF(N(Me) 2)-2Nal-THP-E-N-

3Pya-Sar-CON(Me)2;

CF3CO-K(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF( N(Me)2)-2Nal-THP-

E-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-F-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-K(Ac)-N-

3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Me)3-Pen(3)-AEF(N(Me)2)-2N al-THP-K(Me)3-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Achx-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Acpx-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Aib-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Chg-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlTMA4) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7(3NAcPh)W-K(NMeAc)-Pen(3)-MMoEF -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dap(NMeAc)-Pen(3)-TMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG2gCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3gCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-GPEG3F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

4cpgCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal -THP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC14)-Pen(3)-TMA PF-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(4cpg)-Pen(3)-TMAPF-2Nal-T HP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3gCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG2gCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C14gEPEG2PEG2CO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW- Dab(NMeAc)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW- Dab(NMeAc)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(cPEG3a)-Pen(3)-TMAPF-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2 gEC12)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C14gEPEG2PEG2CO-APEG2Ser(S*)-Pen(3)-N(N(Me)2)-T-7MeW-K(PE G2PEG2gEC14)-

Pen(3)-APEG3F-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-APEG2Ser(S*)-Pen(3)-N(N(Me)2)-T-7MeW-K(PE G2PEG2gEC12)-

Pen(3)-APEG3F-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C14gEPEG2PEG2CO-APEG2Ser(S*)-Pen(3)-N(N(Me)2)-T-7MeW-K(NM eAc)-Pen(3)-

APEG3F-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-APEG2Ser(S*)-Pen(3)-N(N(Me)2)-T-7MeW-K(NM eAc)-Pen(3)-

APEG3F-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-TMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Cit-Pen(3)-TMAPF-2Nal-THP-K (NMeAc)-N-3Pya- Sar-C0N(Me)2;

MeCO-r-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal -THP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2;

MeCO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAP F-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

5cpaCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal -THP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-hFTMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlDMA4m PEG)-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlMMo4) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlTMA5) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlTMA3) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlTMA2) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlTMAl) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4N3)-2Nal -THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Me)3-Pen(3)-TMAPF-2Nal-TH P-K(NMeAc)-N-

3Pya-Sar-CON(Me)2;

C14gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG 2gEC14)-Pen(3)- TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C14gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)- Pen(3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG 2gEC12)-Pen(3)-

TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; C12gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen (3)-TMAPF- 2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(N(Me)2) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-TH P-K(NMeAc)-N-

3Pya-Sar-CON(Me)2;

MeCO-APEG2Ser(S*)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3) -APEG3F-2Nal-THP- K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-APEG2Ser(R*)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3) -APEG3F-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-TMAPF-2Nal -THP-

K(NMeAC)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OZOXIMECh )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OEOXIMECh )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4G)-2Nal- THP-K(NMeAc)- N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlMME)- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlTMA4) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-dFPPEG3F-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-NPyPEG3F-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMA8F-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7(3NAcPh)W-K(NMeAc)-Pen(3)-TMAPF -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMA6F-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Diazabiclyc looctane6F-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlChC16 )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlClaC8 )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TzlChmPEG3- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TzlChmPEG-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Tzl(Ch)-2Na l-THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlCh)-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlChmPE G)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlTMA4) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlChmPE G3)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(SPD)-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-MMoPF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Piperazineq uatF-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-mPEG3TMA4F- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-morfTMA4F-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-DMTASF-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-APEG2Ser(R*)-Pen(3)-APEG3F-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; MeCO-Pen(3)-N(N(Me)2)-T-7MeW-APEG2Ser(S*)-Pen(3)-APEG3F-2Nal -THP-K(NMeAc)- N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(BisPEG2 a)(S*)-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(BisPEG2 a)(RS)-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(aPEG2a) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TBAPEG3F-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-MTASF-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NMe3)-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-YC8CO(NHPEG 3a)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen -Pen(3)-TMAPF-2Nal-THP-

K(NMeAc)-N-3 cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-APEG2Ser(R*)-Pen(3)-TMAPF-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-APEG2Ser-Pen(3)-AEF-2Nal-TH P-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen -Pen(3)-AEF-2Nal-THP-

K(NMeAc)-N-3 cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-APEG3F-2Nal-TH P-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-YC8COPip-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NMeBism PEG3)-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NMe2mPE G3)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(PEG2a)- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NMePEG2 a)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(C9OH)-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(MePrpa) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-APEG2ser-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APE G3F-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-NPyEF-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMA3F-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMA3F-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-mPEG2TMA2F- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-mPEG2TMA4F- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMA4F-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; mPEG3CO-SP6-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-MPzPEG3F-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-MMPEG3F-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-ACHMF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMePEG3a)-Pen(3)-APEG3F-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-k(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3 F-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-DMMMF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecarn)-Pen(3)-APEG3F-2 Nal-THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-ACHMF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF((Ch)cPE G3a)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(AcCh)-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NsCh)-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(BisMEP) )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-DMPMF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG2F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-MMoEF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-4DMPzEF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-T HP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-4DMPEF-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal- THP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(N(Me)2)- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; CF3CO-Pen(3)-N(N(Me)2)-T-7CF3W-K(NMeAc)-Pen(3)-AEF(N(Me)2)-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

CF3CO-Pen(3)-N(N(Me)2)-T-7CF3W-K(NMeAc)-Pen(3)-AEF-2Nal-T HP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2;

CF3CO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-TH P-K(NMeAc)-N-

3Pya-Sar-CON(Me)2;

CF3CO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(N(Me)2) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal- THP-

K(NMePEG3a)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC12)-Pen(3)-TMA PF-2Nal-THP-

K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)- Pen(3)-TMAPF-

2Nal-THP-K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)- Pen(3)-TMAPF-

2Nal-K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC14)-Pen(3)-TMA PF-2Nal-THP-

K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2;

C14gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)- Pen(3)-TMAPF- 2Nal-THP-K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-L-N-3Pya- Sar-C0N(Me)2;

5cpaCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF(N(Me) 2)-2Nal-Pip(NMe2)-

Q(N(Me)2)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

Q(N(Me)2)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF(N(Me)2 )-2Nal-THP-

Q(N(Me)2)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-T HP-Q(N(Me)2)-N-

3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF(N(Me)2) -2Nal-THP-

Q(N(Me)2)-N-3Pya-Sar-CON(Me)2;

5cpaCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-TMAPF-2Na l-THP-Q(N(Me)2)-N-

3Pya-Sar-CON(Me)2;

CF3CO-k(5cpa)-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AE F(N(Me)2)-2Nal-THP-

Q(N(Me)2)-N-3Pya-Sar-CON(Me)2;

5cpaCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF(N(Me) 2)-2Nal-THP-

Q(N(Me)2)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-W-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(BisMEPa )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal- THP-

Dab(NMeAc)-N-3Pya-Sar-CONH(PEG3a); cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAC)-N-3Pya-NMeK(PEG2PEG2C12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG2C14)-CONH2;

C12gEPEG2PEG2CO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAP F-2Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC12)-Pen(3)-TMA PF-2Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen( 3)-TMAPF-2Nal-

THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAC)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAC)-N-

3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -

K(PEG2PEG2gEC12)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC14)-Pen(3)-TMA PF-2Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2;

C14gEPEG2PEG2CO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAP F-2Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen( 3)-TMAPF-2Nal-

THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAC)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -

K(PEG2PEG2gEC14)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG2K(PEG2PEG2gEC12)2)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG2K(PEG2PEG2PEG2PEG2gEC12)2)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -

K(PEG2PEG2PEG2gEC12))-N-3Pya-NMeK(PEG2PEG2PEG2gEC12)-CONH 2; cPEG3aCO-k(PEG2PEG2PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K( Ac)-Pen(3)-

TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG2PEG2PEG2gEC12 )-CONH2; cPEG3aCO-k(PEG2PEG6gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen( 3)-TMAPF-2Nal-

THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG6gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG6gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG6gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(SP6PEG2PEG2C12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(SP6PEG2PEG2gEC12)-CONH2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-THP-K( Ac)-N-3Pya-Sar-

C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-TH P-K(Ac)-N-3Pya-

Sar-C0NH2; mPEG3CO-SP6-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal -THP-K(Ac)-N- 3Pya-Sar-CONH2;

CF3CO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-THP-K (Ac)-N-3Pya-Sar-

C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-TMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-K(NMeAc)- N-3Pya-Sar-CONH2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-THP -K(NMeAc)-N-3Pya- Sar-C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal- THP-K(NMeAc)- N-3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-TH P-K(NMeAc)-N-

3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-TH P-Q(N(Me)2)-N-

3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-T HP-Q(N(Me)2)-N-

3Pya-Sar-CONH2; mPEG3CO-SP6-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Na l-THP-

Q(N(Me)2)-N-3Pya-Sar-CONH2;

CF3CO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(N(Me)2) -2Nal-THP-

Q(N(Me)2)-N-3Pya-Sar-CONH2; mPEG3CO-SP6-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal -THP-QNMe2-

N-3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(NMe2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NHCh)-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; or a pharmaceutically acceptable salt thereof.

Clause 10.

10. The compound of clause 3 wherein: R ⁹ is -NHCH3, -N(CH ₃ )2, -NH(CH ₂ CH ₂ O)2CH3, -N(CH ₃ )(CH ₂ CH ₂ O) ₂ CH3, - a pharmaceutically acceptable salt thereof.

Clause 11.

11. A compound of Formula (IV): wherein:

- X3 is a direct bond, (D) arginine, (D) lysine substituted

wherein:

AN" as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R', R', R ^k , R ^m , R ⁿ , R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof.

Clause 12.

12. The compound of clause 10 wherein:

AN" is chloride; or a pharmaceutically acceptable salt thereof.

Clause 13.

13. The compound of clause 10 selected from cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-4DMPEF-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-4DMPzEF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-ACHMF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-ACHMF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-THP-E-N-3Pya- Sar-CONH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-THP-K(Ac)-N-3 Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-THP-Q(N(M e)2)-N-3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-THP-Q(N(M e)2)-N-3Pya-Sar- C0N(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-THP-E-N-3P ya-Sar-CONH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-THP-K(Ac)- N-3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-THP-K(NMeA c)-N-3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-THP-K(NMe Ac)-N-3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-THP-Dab(NM eAc)-N-3Pya- Sar-C0NH2; cPEG3aCO-Pen(3)-N-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-THP-Dab(N MeAc)-N-3Pya-

Sar-C0NH2; cPEG3aCO-Pen(3)-N-T-7(3NAcPh)W-K(Ac)-Pen(3)-AEF-2Nal-THP-E-N -3Pya-Sar-

C0NH2; cPEG3aCO-Pen(3)-N-T-7(3NAcPh)W-K(Ac)-Pen(3)-AEF-2Nal-THP-K(A c)-N-3Pya-Sar-

C0NH2; cPEG3aCO-r-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-THP-E-N-5Me PyridinAla-Sar- C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-T HP-Q(N(Me)2)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-AIB-Pen(3)-AEF-2Nal-THP-AIB -N-3Pya-Sar- C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-T HP-Q(N(Me)2)-N-

3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-TH P-K(Ac)-N-3Pya-

Sar-C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-TH P-Q(N(Me)2)-N-

3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF-2Nal-T HP-Dab(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal- THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-TH P-K(NMeAc)-N-

3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal- THP-K(NMeAc)- N-3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal- THP-E-N-3Pya- Sar-C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-TH P-Dab(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-di FCpx-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-di FCpx-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-AEF-2Nal- THP-

Dab(NMeAc)-N-3Pya-Sar-CONH(PEG3a); cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMecPEG3a)-Pen(3)-AEF-2 Nal-THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-APEG2Ser-Pen(3)-AEF-2Nal-TH P-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-APEG2Ser(R*)-Pen(3)-AEF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF-2Nal-TH P-K(NMeAc)-N- 3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF((Ch)cPE G3a)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(AcCh)-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(aPEG2a) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(BisMEP) )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(BisMEPa )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(BisPEG2 a)(RS)-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(BisPEG2 a)(S*)-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF(G)-2Nal-THP-K(Ac)- N-3Pya-Sar-

C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(MePrpa) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-AEF(N(Me)2 )-2Nal-THP-

Q(N(Me)2)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(N(Me)2) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(NMe2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NHCh)-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NMe2mPE G3)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NMe3)-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NMeBism PEG3)-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NMePEG2 a)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(NsCh)-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(PEG2a)- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-AEF(SPD)-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG2F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-A-T-7MeW-A-Pen(3)-APEG3F-2Nal-A-K(NMeAc)-N-3 Pya-Sar-

C0N(Me)2; cPEG3aCO-Pen(3)-APEG2Ser(S*)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-Dab(Me)3-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-F-T-7MeW-F-Pen(3)-APEG3F-2Nal-F-K(NMeAc)-N-3 Pya-Sar- C0N(Me)2; cPEG3aCO-Pen(3)-Gab-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal-THP-K (NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-L-T-7MeW-L-Pen(3)-APEG3F-2Nal-L-K(NMeAc)-N-3 Pya-Sar-

C0N(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-APEG3F-2Nal-THP-K(Ac)- N-3Pya-Sar-

C0NH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal-THP-K(N MeAc)-N-3Pya- Sar-C0NH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal-THP-K(N MeAc)-N-3Pya- Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-E-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-K(Ac)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-APEG3F-2Nal-TH P-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

Dap(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-A-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-L-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-F-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-W-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-W-T-7MeW-W-Pen(3)-APEG3F-2Nal-W-K(NMeAc)-N-3 Pya-Sar- C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-dFPPEG3F-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Diazabiclyc looctane6F-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-DMMMF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-DMPMF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-DMTASF-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4G)-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-F(4N3)-2Nal-THP-K(Ac)- N-3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4N3)-2Nal -THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlDMA4m PEG)-2Nal-

THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlMME)- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-F(4TzlMMo3)-2Nal-THP-K (Ac)-N-3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlMMo4) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-F(4TzlTMAl)-2Nal-THP-K (Ac)-N-3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlTMAl) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlTMA2) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-F(4TzlTMA3)-2Nal-THP-K (Ac)-N-3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlTMA3) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-F(4TzlTMA4)-2Nal-THP-K (Ac)-N-3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlTMA4) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-F(4TzlTMA5) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-GPEG3F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-hFTMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-MMoEF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7(3NAcPh)W-K(NMeAc)-Pen(3)-MMoEF -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-MMoPF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-MMPEG3F-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-morfTMA4F-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-mPEG2TMA2F- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-mPEG2TMA4F- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-mPEG3TMA4F- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-MPzPEG3F-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-MTASF-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-NPyEF-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-NPyPEG3F-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Piperazineq uatF-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TBAPEG3F-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMA3F-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMA3F-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMA4F-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMA6F-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMA8F-2Nal- THP-K(NMeAc)- N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(cPEG3a)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(Me)3-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(Me)3-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-Ach x-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC12)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2 Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-K(PEG2PEG2gEC12)-T-7MeW-K(N MeAc)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC12)-T-7MeW-K(NMeAc)-Pen(3)-TMAP F-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC12)-T-7MeW-K(PEG2PEG2gEC12)-Pen (3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC12)-T-7MeW-K(NMeAc)-Pen(3)-TMAP F-2Nal-THP-

K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2 Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(N MeAc)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(NMeAc)-Pen(3)-TMAP F-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(PEG2PEG2gEC14)-Pen (3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(NMeAc)-Pen(3)-TMAP F-2Nal-THP-

K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-THP-K(NM eAc)-N-3Pya- Sar-C0NH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-THP-K(NM eAc)-N-3Pya- Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal-THP-Dab( NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-Dab(NMeAc)-Pen(3)-TMAPF-2Nal-THP-K( NMeAC)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-A-N-3Py a-Sar- C0N(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-K(PEG2P EG2gEC12)-N-

3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-K(NMeAc )-N-3Pya-

NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-E-N-3Py a-Sar-CONH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-K(Ac)-N -3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N-T-7(3NAcPh)W-K(Ac)-Pen(3)-TMAPF-2Nal-THP-E -N-3Pya-Sar-

C0NH2; cPEG3aCO-Pen(3)-N(N(Me))-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-T HP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-E-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-K(NMeAc)- N-3Pya-Sar-CO(NHPEG3a); cPEG3aCO-Pen -Pen(3)-TMAPF-2Nal-THP-

K(NMeAc)-N-3 cPEG3aCO-Pen -Pen(3)-TMAPF-2Nal-THP-

K(NMeAc)-N-3 cPEG3aCO-Pen(3)-N(N(Me)2)-T-7(3NAcPh)W-K(NMeAc)-Pen(3)-TMAPF -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAC)-N-3Pya-NMeK(PEG2PEG2C12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -Dab(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

Q(N(Me)2)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-TMAPF-2Nal -THP-

K(NMeAC)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAC)-N-

3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAC)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAC)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-A-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-Cit-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Me)3-Pen(3)-TMAPF-2Nal-TH P-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Acpx-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Achx-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Chg-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Aib-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Cit-Pen(3)-TMAPF-2Nal-THP-K (NMeAc)-N-3Pya- Sar-C0N(Me)2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen( 3)-TMAPF-2Nal-

THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen( 3)-TMAPF-2Nal-

THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -

K(PEG2PEG2gEC14)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC12)-Pen(3)-TMA PF-2Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -

K(PEG2PEG2gEC12)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC14)-Pen(3)-TMA PF-2Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-TMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG2C14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG6gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG6gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-TMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CONH2; cPEG3aCO-k(PEG2PEG6gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen( 3)-TMAPF-2Nal-

THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG6gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG2K(PEG2PEG2gEC12)2)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -

K(PEG2PEG2PEG2gEC12))-N-3Pya-NMeK(PEG2PEG2PEG2gEC12)-CONH 2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2 gEC12)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(cPEG3a)-Pen(3)-TMAPF-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(4cpg)-Pen(3)-TMAPF-2Nal-T HP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC14)-Pen(3)-TMA PF-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC12)-Pen(3)-TMA PF-2Nal-THP-

K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K( Ac)-Pen(3)-

TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG2PEG2PEG2gEC12 )-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(SP6PEG2PEG2C12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Py a-NMeK(SP6PEG2PEG2gEC 12)-CONH2 ; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG2K(PEG2PEG2PEG2PEG2gEC12)2)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC14)-Pen(3)-TMA PF-2Nal-THP-

K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dap(NMeAc)-Pen(3)-TMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -Dap(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Tzl(Ch)-2Na l-THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TzlChmPEG-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TzlChmPEG3- 2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(C9OH)-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OEOXIMECh )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlCh)-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlChC16 )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlClaC8 )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlChmPE G)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlChmPE G3)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlTMA4) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OTzlTMA4) -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-Y(OZOXIMECh )-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-YC8CO(NHPEG 3a)-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-YC8COPip-2N al-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3gCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-APEG3F-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3gCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP- K(NMeAc)-N-3Pya-Sar-CON(Me)2; or a pharmaceutically acceptable salt thereof.

Clause 14.

14. A compound of Formula (V)

wherein:

wherein:

AN" as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R', R', R ^k , R ^m , R ⁿ , R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof. Clause 15.

15. The compound of clause 14 which is

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-d K-

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-d L-

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-F -

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-H -

NMeDTyr-C0NH2;

MeCO-r-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-E-N-H-

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-P af-

NMeDTyr-C0NH2;

MeCO-r-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-THP-E-N-h-

NMeDTyr-C0NH2;

MeCO-r-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-THP-E-N-N-

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-N -

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-v -

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-t -

NMeDTyr-C0NH2;

MeCO-r-Pen(3)-N-T-7MeW-Cit-Pen(3)-AEF-2Nal-aMeL-E-N-k-NMe DTyr- C0NH2;

MeCO-r-Pen(3)-N-T-7MeW-Cit-Pen(3)-AEF-2Nal-aMeL-E-N-h-NMe DTyr- C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-o m- NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-s -

NMeDTyr-C0NH2; MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-f-

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-Y-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-k- NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-4AmPhe-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N- k-

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-Paf(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N -k-

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-y -

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-Cit-Pen(3)-AEF-2Nal-aMeL-K(Ac)-N-k-

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-h -

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-b Ala-

NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-b Ala- NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-b Ala- NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-3 Pya- NMeDTyr-C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-aMeK-K(Ac)-N-3 pya- NMeDTyr-C0NH2;

MeCO-r-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-AEF-2Nal-THP-E-N-3Pya -

NMeDTyr-C0NH2;

MeCO-r-Pen(3)-Q-T-W-Q-Pen(3)-AEF-2Nal-THP-aMeE-N-F-NMeDTy r- C0NH2;

MeCO-r-Pen(3)-Q-T-W-Q-Pen(3)-AEF-2Nal-THP-E-N-N-NMe DTyr- C0NH2; or a pharmaceutically acceptable salt thereof.

Clause 16. 16. A compound of Formula (VI) wherein:

R ⁴ is H, or -CH ₃ ;

wherein:

AN" as above defined for A, R, X3, X12, Rl, R2, R5, R6, R8, R15, R16 and R ^a , R ^b , R ^d , R ^f , R ^h , R', R', R ^k , R ^m , R ⁿ , R°, R ^s is acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate; or a pharmaceutically acceptable salt thereof.

Clause 17.

17. The compound of clause 16 wherein

AN" is chloride; or a pharmaceutically acceptable salt thereof.

Clause 18.

18. The compound of clause 16 which is cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAC)-N-3Pya-NMeK(PEG2PEG2C12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N- 3Pya-NMeK(PEG2PEG2C14)-CONH2;

C12gEPEG2PEG2CO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAP F-2Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC12)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2 Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-K(PEG2P EG2gEC12)-N-

3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-K(NMeAc )-N-3Pya-

NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAC)-N-

3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAC)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen( 3)-TMAPF-2Nal- THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC12)-Pen(3)-TMA PF-2Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -

K(PEG2PEG2gEC12)-N-3Pya-NMeK(PEG2PEG2gEC12)-CONH2;

C14gEPEG2PEG2CO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAP F-2Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2 Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAC)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen( 3)-TMAPF-2Nal-

THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -

K(PEG2PEG2gEC14)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC14)-Pen(3)-TMA PF-2Nal-THP-

K(NMeAc)-N-3Pya-NMeK(PEG2PEG2gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N- 3Pya-NMeK(PEG2PEG2K(PEG2PEG2gEC12)2)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N- 3Pya-NMeK(PEG2PEG2K(PEG2PEG2PEG2PEG2gEC12)2)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -

K(PEG2PEG2PEG2gEC12))-N-3Pya-NMeK(PEG2PEG2PEG2gEC12)-CONH 2; cPEG3aCO-k(PEG2PEG2PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K( Ac)-Pen(3)-

TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG2PEG2PEG2gEC12 )-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG6gEC12)-CONH2; cPEG3aCO-k(PEG2PEG6gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen( 3)-TMAPF-2Nal-

THP-K(NMeAc)-N-3Pya-NMeK(PEG2PEG6gEC12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(PEG2PEG6gEC14)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(SP6PEG2PEG2C12)-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-NMeK(SP6PEG2PEG2gEC12)-CONH2;

4cpgCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal -THP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2;

5cpaCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-TMAPF-2Na l-THP-Q(N(Me)2)-N-

3Pya-Sar-CON(Me)2;

5cpaCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal -THP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)- Pen(3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG 2gEC12)-Pen(3)-

TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)- Pen(3)-TMAPF-

2Nal-THP-K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)- Pen(3)-TMAPF-

2Nal-K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2;

C12gEPEG2PEG2CO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW- Dab(NMeAc)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; C14gEPEG2PEG2CO-hk(Me)3-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(NMe Ac)-Pen(3)-

TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C14gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)- Pen(3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C14gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG 2gEC14)-Pen(3)-

TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2;

C14gEPEG2PEG2CO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)- Pen(3)-TMAPF-

2Nal-THP-K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2;

C14gEPEG2PEG2CO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW- Dab(NMeAc)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG2gCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(cPEG3a)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(Me)3-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-THP -K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(Me)3-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-Ach x-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-K(PEG2PEG2gEC12)-T-7MeW-K(N MeAc)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC12)-T-7MeW-K(NMeAc)-Pen(3)-TMAP F-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC12)-T-7MeW-K(PEG2PEG2gEC12)-Pen (3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC12)-T-7MeW-K(NMeAc)-Pen(3)-TMAP F-2Nal-THP-

K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(N MeAc)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(NMeAc)-Pen(3)-TMAP F-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(PEG2PEG2gEC14)-Pen (3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-K(PEG2PEG2gEC14)-T-7MeW-K(NMeAc)-Pen(3)-TMAP F-2Nal-THP- K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-THP-K(NM eAc)-N-3Pya- Sar-C0NH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-THP-K(NM eAc)-N-3Pya- Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal-THP-Dab( NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-Dab(NMeAc)-Pen(3)-TMAPF-2Nal-THP-K( NMeAC)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-A-N-3Py a-Sar- C0N(Me)2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-E-N-3Py a-Sar-CONH2; cPEG3aCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-K(Ac)-N -3Pya-Sar- C0NH2; cPEG3aCO-Pen(3)-N-T-7(3NAcPh)W-K(Ac)-Pen(3)-TMAPF-2Nal-THP-E -N-3Pya-Sar-

C0NH2; cPEG3aCO-Pen(3)-N(N(Me))-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-T HP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-E-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-K(NMeAc)-

N-3Pya-Sar-CO(NHPEG3a); cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-APEG2Ser(S*)-Pen(3)-TMAPF-2 Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen -Pen(3)-TMAPF-2Nal-THP-

K(NMeAc)-N-3 cPEG3aCO-Pen(3)-N(N(Me)2)-T-7(3NAcPh)W-K(NMeAc)-Pen(3)-TMAPF -2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

Dab(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -Dab(NMeAc)-N- 3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAC)-Pen(3)-TMAPF-2Nal- THP-

Q(N(Me)2)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Q(N(Me)2)-Pen(3)-TMAPF-2Nal -THP-

K(NMeAC)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-A-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-K(NMeAc)- N-3Pya-Sar-CONH2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-Cit-N-3Pya-

Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Me)3-Pen(3)-TMAPF-2Nal-TH P-K(NMeAc)-N- 3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Acpx-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Achx-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Chg-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- Aib-K(NMeAc)-

N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Cit-Pen(3)-TMAPF-2Nal-THP-K (NMeAc)-N-3Pya- Sar-C0N(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-TMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dab(NMeAc)-Pen(3)-TMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CONH2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2 gEC12)-

Pen(3)-TMAPF-2Nal-THP-K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(cPEG3a)-Pen(3)-TMAPF-2Nal -THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(4cpg)-Pen(3)-TMAPF-2Nal-T HP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC12)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-k(PEG2PEG2gEC14)-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-P en(3)-TMAPF-

2Nal-THP-K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC14)-Pen(3)-TMA PF-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC12)-Pen(3)-TMA PF-2Nal-THP-

K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(PEG2PEG2gEC12)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(PEG2PEG2gEC14)-Pen(3)-TMA PF-2Nal-THP-

K(PEG2PEG2gEC14)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-Dap(NMeAc)-Pen(3)-TMAPF-2Na l-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2; cPEG3aCO-Pen(3)-N(N(Me)2)-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP -Dap(NMeAc)-N-

3Pya-Sar-CON(Me)2; cPEG3gCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal- THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-THP-K(NMe Ac)-N-3Pya-Sar- C0NH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-K(Ac)-N- 3Pya-Sar-CONH2;

MeCO-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-E-N-3Pya -Sar-CONH2;

MeCO-k(Me)3-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-E -N-3Pya-Sar- C0NH2;

MeCO-k(Me)3-Pen(3)-N-T-7(3NAcPh)W-K(Ac)-Pen(3)-TMAPF-2Nal -THP-E-N-3Pya-Sar- C0NH2; MeCO-k(Me)3-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-K(Ac )-N-3Pya-Sar- C0NH2;

MeCO-Pen(3)-N-T-7(3NAcPh)W-K(Ac)-Pen(3)-TMAPF-2Nal-THP-E- N-3Pya-Sar-CONH2;

MeCO-Pen(3)-N-T-7(3NAcPh)W-K(Ac)-Pen(3)-TMAPF-2Nal-THP-K( Ac)-N-3Pya-Sar- C0NH2;

MeCO-r-Pen(3)-N-T-7MeW-K(Ac)-Pen(3)-TMAPF-2Nal-THP-E-N-3P ya-Sar-CONH2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-T HP-K(NMeAc)-N- 3Pya-Sar-CON(Me)2;

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-T HP-K(NMeAc)-N- 3Pya-Sar-CO(NHPEG3a);

MeCO-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal-T HP-APEG2Ser-N- 3Pya-Sar-CON(Me)2;

MeCO-hk(Me)3-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAP F-2Nal-THP-

K(NMeAc)-N-3Pya-Sar-CON(Me)2;

MeCO-r-Pen(3)-N(N(Me)2)-T-7MeW-K(NMeAc)-Pen(3)-TMAPF-2Nal -THP-K(NMeAc)-N-

3Pya-Sar-CON(Me)2; or a pharmaceutically acceptable salt thereof.

Clause 19.

19. A compound which is:

or a pharmaceutically acceptable salt thereof.

Clause 20.

20. A compound which is

pharmaceutically acceptable salt thereof.

Clause 21.

21. The compound or pharmaceutically acceptable salt thereof, according to any one of clauses 19 and 20 wherein the quarternary ammonium salts as shown in the chemical structures therein include a counterion AN" selected from: acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate.

Clause 22. A pharmaceutical composition comprising the peptide inhibitor or pharmaceutically acceptable salt thereof of any one of clauses 1-21, and a pharmaceutically acceptable carrier, excipient, or diluent.

Clause 23. The pharmaceutical composition of clause 22, further comprising an enteric coating.

Clause 24. The pharmaceutical composition of clause 22, wherein the enteric coating protects and releases the pharmaceutical composition within a subject’s lower gastrointestinal system.

Clause 25. 25. A method for treating an Inflammatory Bowel Disease (IBD), ulcerative colitis, Crohn’s disease, Celiac disease (nontropical Sprue), enteropathy associated with seronegative arthropathies, microscopic colitis, collagenous colitis, eosinophilic gastroenteritis, colitis associated with radio- or chemo-therapy, colitis associated with disorders of innate immunity as in leukocyte adhesion deficiency- 1, chronic granulomatous disease, glycogen storage disease type lb, Hermansky-Pudlak syndrome, Chediak-Higashi syndrome, and Wiskott- Aldrich Syndrome, pouchitis resulting after proctocolectomy and ileoanal anastomosis, gastrointestinal cancer, pancreatitis, insulin-dependent diabetes mellitus, mastitis, cholecystitis, cholangitis, pericholangitis, chronic bronchitis, chronic sinusitis, asthma, psoriasis, psoriatic arthritis, or graft versus host disease in a subject, comprising providing to the subject an effective amount of the peptide inhibitor or peptide inhibitor or pharmaceutically acceptable salt thereof of any one of clauses 1-21, or the pharmaceutical composition of any one of clauses 22-24.

Clause 26.

26. The method of clause 25, wherein the pharmaceutical composition is provided to the subject by an oral, parenteral, intravenous, peritoneal, intradermal, subcutaneous, intramuscular, intrathecal, inhalation, vaporization, nebulization, sublingual, buccal, parenteral, rectal, intraocular, inhalation, topically, vaginal, or topical route of administration.

Clause 27.

27. The method of clause 24 for treating Inflammatory Bowel Disease (IBD), ulcerative colitis, or Crohn’s disease, wherein the pharmaceutical composition is provided to the subject orally.

Clause 28.

28. The method of clause 24 for treating psoriasis, wherein the pharmaceutical composition is provided to the subject orally, topically, parenterally, intravenously, subcutaneously, peritonealy, or intravenously.

Clause 29.

29. The peptide inhibitor or peptide inhibitor or pharmaceutically acceptable salt thereof of any one of clauses 1-21, or the pharmaceutical composition of any one of clauses 22-24, for use in the treatment of an Inflammatory Bowel Disease (IBD), ulcerative colitis, Crohn’s disease, Celiac disease (nontropical Sprue), enteropathy associated with seronegative arthropathies, microscopic colitis, collagenous colitis, eosinophilic gastroenteritis, colitis associated with radio- or chemo-therapy, colitis associated with disorders of innate immunity as in leukocyte adhesion deficiency- 1, chronic granulomatous disease, glycogen storage disease type lb, Hermansky-Pudlak syndrome, Chediak-Higashi syndrome, and Wiskott- Aldrich Syndrome, pouchitis resulting after proctocolectomy and ileoanal anastomosis, gastrointestinal cancer, pancreatitis, insulin-dependent diabetes mellitus, mastitis, cholecystitis, cholangitis, pericholangitis, chronic bronchitis, chronic sinusitis, asthma, psoriasis, psoriatic arthritis, or graft versus host disease in a subject, comprising providing to the subject an effective amount of the peptide inhibitor or peptide inhibitor or pharmaceutically acceptable salt thereof of any one of clauses 1-21, or the pharmaceutical composition of any one of clauses 22-24.

Clause 30.

30. The composition for use according to clause 29, wherein the pharmaceutical composition is provided to the subject by an oral, parenteral, intravenous, peritoneal, intradermal, subcutaneous, intramuscular, intrathecal, inhalation, vaporization, nebulization, sublingual, buccal, parenteral, rectal, intraocular, inhalation, topically, vaginal, or topical route of administration.

Clause 31.

31. The composition for use according to clause 29 for treating Inflammatory Bowel Disease (IBD), ulcerative colitis, or Crohn’s disease, wherein the pharmaceutical composition is provided to the subject orally.

Clause 32.

32. The composition for use according to clause 29 for treating psoriasis, wherein the pharmaceutical composition is provided to the subject orally, topically, parenterally, intravenously, subcutaneously, peritonealy, or intravenously. Enumerated embodiments

[000615] The present disclosure further includes the following enumerated embodiments.

Numbered embodiment 1.

1. A cyclic peptide, or a pharmaceutically acceptable salt or solvate thereof, comprising an amino acid sequence of Formula (A): wherein: the amino acid residue at position Z ³ is absent or the residue of r; the amino acid residue at position Z ⁴ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁹ ; the amino acid residue at position Z ⁵ is the residue of N(N(Me) ); the amino acid residue at position Z ⁶ is the residue of T; the amino acid residue at position Z ⁷ is the residue of 7MeW; the amino acid residue at position Z ⁸ is the residue of K(NMeAc); the amino acid residue at position Z ⁹ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁴ ; the amino acid residue at position Z ¹⁰ is the residue of TMAPF; the amino acid residue at position Z ¹¹ is the residue of 2Nal; the amino acid residue at position Z ¹² is absent or the residue of THP; the amino acid residue at position Z ¹³ is the residue of K(NMeAc); the amino acid residue at position Z ¹⁴ is the residue of N; the amino acid residue at position Z ¹⁵ is absent or the residue of 3Pya; the amino acid residue at position Z ¹⁶ is absent or the residue of Sar; eight or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position; and at least one of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) at least one quaternary amine.

Numbered embodiment 2.

2. A cyclic peptide, or a pharmaceutically acceptable salt or solvate thereof, comprising an amino acid sequence of Formula (B): Z ³ -Z ⁴ -Z ⁵ -Z ⁶ -Z ⁷ -Z ⁸ -Z ⁹ -Z ¹⁰ -Z ⁿ -Z ¹² -Z ¹³ -Z ¹⁴ -Z ¹⁵ -Z ¹⁶ (B), wherein: the amino acid residue at position Z ³ is absent or the residue of r; the amino acid residue at position Z ⁴ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁹ ; the amino acid residue at position Z ⁵ is the residue of N(N(Me)2); the amino acid residue at position Z ⁶ is the residue of T; the amino acid residue at position Z ⁷ is the residue of 7MeW; the amino acid residue at position Z ⁸ is the residue of K(NMeAc); the amino acid residue at position Z ⁹ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁴ ; the amino acid residue at position Z ¹⁰ is the residue of TMAPF; the amino acid residue at position Z ¹¹ is the residue of 2Nal; the amino acid residue at position Z ¹² is absent or the residue of THP; the amino acid residue at position Z ¹³ is the residue of K(NMeAc); the amino acid residue at position Z ¹⁴ is the residue of N; the amino acid residue at position Z ¹⁵ is absent or the residue of 3Pya; the amino acid residue at position Z ¹⁶ is absent or the residue of Sar; eight or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position; and at least one of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) at least one masked amine and/or masked amide.

Numbered embodiment 3.

3. A cyclic peptide, or a pharmaceutically acceptable salt or solvate thereof, comprising an amino acid sequence of Formula (C):

Z ³ -Z ⁴ -Z ⁵ -Z ⁶ -Z ⁷ -Z ⁸ -Z ⁹ -Z ¹⁰ -Z ⁿ -Z ¹² -Z ¹³ -Z ¹⁴ -Z ¹⁵ -Z ¹⁶ (C), wherein: the amino acid residue at position Z ³ is absent or the residue of r; the amino acid residue at position Z ⁴ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁹ ; the amino acid residue at position Z ⁵ is the residue of N(N(Me)2); the amino acid residue at position Z ⁶ is the residue of T; the amino acid residue at position Z ⁷ is the residue of 7MeW; the amino acid residue at position Z ⁸ is the residue of K(NMeAc); the amino acid residue at position Z ⁹ is the residue of an amino acid that is connected to the amino acid residue at position Z ⁴ ; the amino acid residue at position Z ¹⁰ is the residue of TMAPF; the amino acid residue at position Z ¹¹ is the residue of 2Nal; the amino acid residue at position Z ¹² is absent or the residue of THP; the amino acid residue at position Z ¹³ is the residue of K(NMeAc); the amino acid residue at position Z ¹⁴ is the residue of N; the amino acid residue at position Z ¹⁵ is absent or the residue of 3Pya; the amino acid residue at position Z ¹⁶ is absent or the residue of Sar; and eight or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 4.

4. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁴ is the residue of Abu or the residue of an amino acid comprising a sulfhydryl group.

Numbered embodiment 5.

5. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁹ is the residue of an amino acid comprising a sulfhydryl group.

Numbered embodiment 6.

6. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁴ is the residue of an amino acid comprising a sulfhydryl group, the amino acid residue at position Z ⁴ is connected to the amino acid residue at position Z ⁹ by a disulfide bond formed between the amino acid comprising a sulfhydryl group at position Z ⁴ and the amino acid comprising a sulfhydryl group at position Z ⁹ .

Numbered embodiment 7.

7. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁴ is the residue of an amino acid comprising a sulfhydryl group, and the amino acid residue at position Z ⁴ is connected to the amino acid residue at position Z ⁹ by a disulfide bond formed between the amino acid comprising a sulfhydryl group at position Z ⁴ and the amino acid comprising a sulfhydryl group at position Z ⁹ .

Numbered embodiment 8.

8. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁴ is the residue of Abu, the amino acid residue at position Z ⁴ is connected to the amino acid residue at position Z ⁹ by a thioether bond formed between the Abu at position Z ⁴ and the amino acid comprising a sulfhydryl group at position Z ⁹ .

Numbered embodiment 9.

9. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁴ is the residue of Abu, and the amino acid residue at position Z ⁴ is connected to the amino acid residue at position Z ⁹ by a thioether bond formed between the Abu at position Z ⁴ and the amino acid comprising a sulfhydryl group at position Z ⁹ .

Numbered embodiment 10.

10. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide further comprises R ^NT , wherein R ^NT is bound to the N-terminal amine of the amino acid residue at position

(i) Z ³ when Z ³ is present, or

(ii) Z ⁴ when Z ³ is absent; and

R ^NT is selected from the group consisting of: -C(O)-optionally substituted (C1-C20) alkyl and -C(O)-optionally substituted (C1-C40) heteroalkyl.

Numbered embodiment 11.

11. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide further comprises R ^CT , wherein R ^CT is bound to the carbonyl derived from the C- terminal carboxylic acid of the amino acid residue at position

(i) Z ¹⁶ when Z ¹⁶ is present,

(ii) Z ¹⁵ when Z ¹⁶ is absent, or

(iii) Z ¹⁴ when Z ¹⁵ and Z ¹⁶ are absent; and

R ^CT is -N(R^)(R ^Z ), wherein

(i) each R ^Y and R ^z is independently selected from the group consisting of: hydrogen, optionally substituted (C1-C15) alkyl and optionally substituted (C1-C30) heteroalkyl, or

(ii) each R ^Y and R ^z come together with the N atom to which they are attached to form an optionally substituted (C3-C14) heterocyclic ring or an optionally substituted (C5-C10) bicyclic heterocyclic ring. Numbered embodiment 12.

12. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide further comprises R ^CT , wherein R ^CT is bound to the carbonyl derived from the C- terminal carboxylic acid of the amino acid residue at position

(i) Z ¹⁶ when Z ¹⁶ is present,

(ii) Z ¹⁵ when Z ¹⁶ is absent, or

(iii) Z ¹⁴ when Z ¹⁵ and Z ¹⁶ are absent; and

R ^CT is -N(R^)(R ^Z ), wherein

(i) each R ^Y and R ^z is independently selected from the group consisting of: hydrogen, optionally substituted (C1-C15) alkyl and optionally substituted (C1-C30) heteroalkyl, provided that only one of R ^Y and R ^z is hydrogen, or

(ii) each R ^Y and R ^z come together with the N atom to which they are attached to form an optionally substituted (C3-C14) heterocyclic ring or an optionally substituted (C5-C10) bicyclic heterocyclic ring.

Numbered embodiment 13.

13. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide further comprises R ^NT and R ^CT and is of Formula (D): wherein R ^NT , Z ³ , Z ⁴ , Z ⁵ , Z ⁵ , Z ⁷ , Z ⁸ , Z ⁹ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ , Z ¹⁶ and R ^CT are as defined in any one of the preceding embodiments.

Numbered embodiment 14.

14. The cyclic peptide of any one of the preceding embodiments, wherein eight of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 15.

15. The cyclic peptide of any one of the preceding embodiments, wherein seven or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 16.

16. The cyclic peptide of any one of the preceding embodiments, wherein seven of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 17.

17. The cyclic peptide of any one of the preceding embodiments, wherein six or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 18.

18. The cyclic peptide of any one of the preceding embodiments, wherein six of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 19.

19. The cyclic peptide of any one of the preceding embodiments, wherein five or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 20.

20. The cyclic peptide of any one of the preceding embodiments, wherein five of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 21.

21. The cyclic peptide of any one of the preceding embodiments, wherein four or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 22.

22. The cyclic peptide of any one of the preceding embodiments, wherein four of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 23. 23. The cyclic peptide of any one of the preceding embodiments, wherein three or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 24.

24. The cyclic peptide of any one of the preceding embodiments, wherein three of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 25.

25. The cyclic peptide of any one of the preceding embodiments, wherein two or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 26.

26. The cyclic peptide of any one of the preceding embodiments, wherein two of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 27.

27. The cyclic peptide of any one of the preceding embodiments, wherein one or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 28.

28. The cyclic peptide of any one of the preceding embodiments, wherein one of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, is independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 29.

29. The cyclic peptide of any one of the preceding embodiments, wherein none of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position. Numbered embodiment 30.

30. The cyclic peptide of any one of the preceding embodiments, wherein seven or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 31.

31. The cyclic peptide of any one of the preceding embodiments, wherein seven of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁵ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 32.

32. The cyclic peptide of any one of the preceding embodiments, wherein six or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 33.

33. The cyclic peptide of any one of the preceding embodiments, wherein six of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 34.

34. The cyclic peptide of any one of the preceding embodiments, wherein five or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 35.

35. The cyclic peptide of any one of the preceding embodiments, wherein five of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 36.

36. The cyclic peptide of any one of the preceding embodiments, wherein four or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 37.

37. The cyclic peptide of any one of the preceding embodiments, wherein four of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 38.

38. The cyclic peptide of any one of the preceding embodiments, wherein three or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 39.

39. The cyclic peptide of any one of the preceding embodiments, wherein three of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁵ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 40.

40. The cyclic peptide of any one of the preceding embodiments, wherein two or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 41.

41. The cyclic peptide of any one of the preceding embodiments, wherein two of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 42.

42. The cyclic peptide of any one of the preceding embodiments, wherein one or fewer of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 43. 43. The cyclic peptide of any one of the preceding embodiments, wherein one of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, is independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 44.

44. The cyclic peptide of any one of the preceding embodiments, wherein four or fewer of the amino acid residues at positions Z ⁵ , Z ⁸ , Z ¹⁰ , and Z ¹³ are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 45.

45. The cyclic peptide of any one of the preceding embodiments, wherein four of the amino acid residues at positions Z ⁵ , Z ⁸ , Z ¹⁰ , and Z ¹³ are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 46.

46. The cyclic peptide of any one of the preceding embodiments, wherein three or fewer of the amino acid residues at positions Z ⁵ , Z ⁸ , Z ¹⁰ , and Z ¹³ are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 47.

47. The cyclic peptide of any one of the preceding embodiments, wherein three of the amino acid residues at positions Z ⁵ , Z ⁸ , Z ¹⁰ , and Z ¹³ are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 48.

48. The cyclic peptide of any one of the preceding embodiments, wherein two or fewer of the amino acid residues at positions Z ⁵ , Z ⁸ , Z ¹⁰ , and Z ¹³ are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 49.

49. The cyclic peptide of any one of the preceding embodiments, wherein two of the amino acid residues at positions Z ⁵ , Z ⁸ , Z ¹⁰ , and Z ¹³ are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 50.

50. The cyclic peptide of any one of the preceding embodiments, wherein one or fewer of the amino acid residues at positions Z ⁵ , Z ⁸ , Z ¹⁰ , and Z ¹³ are independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 51. 51. The cyclic peptide of any one of the preceding embodiments, wherein one of the amino acid residues at positions Z ⁵ , Z ⁸ , Z ¹⁰ , and Z ¹³ is independently replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 52.

52. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ³ , when an amino acid residue is present at the position, is not replaced.

Numbered embodiment 53.

53. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁶ is not replaced.

Numbered embodiment 54.

54. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁷ is not replaced.

Numbered embodiment 55.

55. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹¹ is not replaced.

Numbered embodiment 56.

56. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹² , when an amino acid residue is present at the position, is not replaced.

Numbered embodiment 57.

57. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹⁴ is not replaced.

Numbered embodiment 58.

58. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹⁵ , when an amino acid residue is present at the position, is not replaced.

Numbered embodiment 59.

59. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹⁶ , when an amino acid residue is present at the position, is not replaced.

Numbered embodiment 60.

60. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ⁶ and Z ¹¹ are not replaced.

Numbered embodiment 61.

61. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ⁶ and Z ¹⁴ are not replaced.

Numbered embodiment 62. 62. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ¹¹ and Z ¹⁴ are not replaced.

Numbered embodiment 63.

63. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ⁶ , Z ¹¹ and Z ¹⁴ are not replaced.

Numbered embodiment 64.

64. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ⁶ , Z ⁷ , Z ¹¹ and Z ¹⁴ are not replaced.

Numbered embodiment 65.

65. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ⁶ , Z ¹¹ , Z ¹² and Z ¹⁴ , when an amino acid residue is present at the position, are not replaced.

Numbered embodiment 66.

66. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ⁶ , Z ⁷ , Z ¹¹ , Z ¹² and Z ¹⁴ , when an amino acid residue is present at the position, are not replaced.

Numbered embodiment 67.

67. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ³ , Z ⁶ , Z ⁷ , Z ¹¹ , Z ¹² and Z ¹⁴ , when an amino acid residue is present at the position, are not replaced.

Numbered embodiment 68.

68. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ⁶ , Z ⁷ , Z ¹¹ , Z ¹² , Z ¹⁴ and Z ¹⁵ , when an amino acid residue is present at the position, are not replaced.

Numbered embodiment 69.

69. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ³ , Z ⁶ , Z ⁷ , Z ¹¹ , Z ¹² , Z ¹⁴ and Z ¹⁵ , when an amino acid residue is present at the position, are not replaced.

Numbered embodiment 70.

70. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ⁶ , Z ⁷ , Z ¹¹ , Z ¹² , Z ¹⁴ and Z ¹⁶ , when an amino acid residue is present at the position, are not replaced.

Numbered embodiment 71. 71. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ³ , Z ⁶ , Z ⁷ , Z ¹¹ , Z ¹² , Z ¹⁴ and Z ¹⁶ , when an amino acid residue is present at the position, are not replaced.

Numbered embodiment 72.

72. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ⁶ , Z ⁷ , Z ¹¹ , Z ¹² , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are not replaced.

Numbered embodiment 73.

73. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ³ , Z ⁶ , Z ⁷ , Z ¹¹ , Z ¹² , Z ¹⁴ , Z ¹⁵ and Z ¹⁶ , when an amino acid residue is present at the position, are not replaced.

Numbered embodiment 74.

74. The cyclic peptide of any one of the preceding embodiments, wherein three or fewer of the amino acid residues at positions Z ³ , Z ¹² , Z ¹⁵ and Z ¹⁶ are absent.

Numbered embodiment 75.

75. The cyclic peptide of any one of the preceding embodiments, wherein three of the amino acid residues at positions Z ³ , Z ¹² , Z ¹⁵ and Z ¹⁶ are absent.

Numbered embodiment 76.

76. The cyclic peptide of any one of the preceding embodiments, wherein two or fewer of the amino acid residues at positions Z ³ , Z ¹² , Z ¹⁵ and Z ¹⁶ are absent.

Numbered embodiment 77.

77. The cyclic peptide of any one of the preceding embodiments, wherein two of the amino acid residues at positions Z ³ , Z ¹² , Z ¹⁵ and Z ¹⁶ are absent.

Numbered embodiment 78.

78. The cyclic peptide of any one of the preceding embodiments, wherein one or fewer of the amino acid residues at positions Z ³ , Z ¹² , Z ¹⁵ and Z ¹⁶ are absent.

Numbered embodiment 79.

79. The cyclic peptide of any one of the preceding embodiments, wherein one of the amino acid residues at positions Z ³ , Z ¹² , Z ¹⁵ and Z ¹⁶ is absent.

Numbered embodiment 80.

80. The cyclic peptide of any one of the preceding embodiments, wherein none of the amino acid residues at positions Z ³ , Z ¹² , Z ¹⁵ and Z ¹⁶ are absent.

Numbered embodiment 81. 81. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ³ is absent and the amino acid residues at positions Z ¹² , Z ¹⁵ and Z ¹⁶ are present.

Numbered embodiment 82.

82. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹² is absent and the amino acid residues at positions Z ³ , Z ¹⁵ and Z ¹⁶ are present.

Numbered embodiment 83.

83. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹⁵ is absent and the amino acid residues at positions Z ³ , Z ¹² and Z ¹⁶ are present.

Numbered embodiment 84.

84. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹⁶ is absent and the amino acid residues at positions Z ³ , Z ¹² and Z ¹⁵ are present.

Numbered embodiment 85.

85. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ³ and Z ¹⁶ are absent and the amino acid residues at positions Z ¹² and Z ¹⁵ are present.

Numbered embodiment 86.

86. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ³ , Z ¹⁵ and Z ¹⁶ are absent and the amino acid residue at position Z ¹² is present.

Numbered embodiment 87.

87. The cyclic peptide of any one of the preceding embodiments, wherein at least one of R ^NT , when present, and/or R ^CT , when present, and/or the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) at least one quaternary amine.

Numbered embodiment 88.

88. The cyclic peptide of any one of the preceding embodiments, wherein at least one of R ^NT , when present, and/or R ^CT , when present, and/or the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) a quaternary amine.

Numbered embodiment 89. 89. The cyclic peptide of any one of the preceding embodiments, wherein at least one of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) at least one quaternary amine.

Numbered embodiment 90.

90. The cyclic peptide of any one of the preceding embodiments, wherein at least one of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) a quaternary amine.

Numbered embodiment 91.

91. The cyclic peptide of any one of the preceding embodiments, wherein at least one of R ^NT , when present, and/or R ^CT , when present, and/or the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹² and/or Z ¹³ , when an amino acid residue is present at the position, each independently comprise(s) at least one quaternary amine.

Numbered embodiment 92.

92. The cyclic peptide of any one of the preceding embodiments, wherein at least one of R ^NT , when present, and/or R ^CT , when present, and/or the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , Z ¹² , and/or Z ¹³ , when an amino acid residue is present at the position, each independently comprise(s) a quaternary amine.

Numbered embodiment 93.

93. The cyclic peptide of any one of the preceding embodiments, wherein at least one of R ^NT , when present, and/or the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , and/or Z ¹³ , when an amino acid residue is present at the position, each independently comprise(s) at least one quaternary amine.

Numbered embodiment 94.

94. The cyclic peptide of any one of the preceding embodiments, wherein at least one of R ^NT , when present, and/or the amino acid residues at positions Z ³ , Z ⁵ , Z ⁸ , Z ¹⁰ , and/or Z ¹³ , when an amino acid residue is present at the position, each independently comprise(s) a quaternary amine.

Numbered embodiment 95.

95. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT and the amino acid residues at positions Z ⁵ and Z ¹⁰ each independently comprise at least one quaternary amine.

Numbered embodiment 96. 96. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT and the amino acid residues at positions Z ⁵ and Z ¹⁰ each independently comprise a quaternary amine.

Numbered embodiment 97.

97. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT and the amino acid residues at positions Z ⁸ and Z ¹⁰ each independently comprise at least one quaternary amine.

Numbered embodiment 98.

98. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT and the amino acid residues at positions Z ⁸ and Z ¹⁰ each independently comprise a quaternary amine.

Numbered embodiment 99.

99. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT and the amino acid residues at positions Z ⁸ and Z ¹³ each independently comprise at least one quaternary amine.

Numbered embodiment 100.

100. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT and the amino acid residues at positions Z ⁸ and Z ¹³ each independently comprise a quaternary amine.

Numbered embodiment 101.

101. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ⁸ , Z ¹⁰ and Z ¹³ each independently comprise at least one quaternary amine.

Numbered embodiment 102.

102. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ⁸ , Z ¹⁰ and Z ¹³ each independently comprise a quaternary amine.

Numbered embodiment 103.

103. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT and the amino acid residue at position Z ³ each independently comprise at least one quaternary amine.

Numbered embodiment 104.

104. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT and the amino acid residue at position Z ³ each independently comprise a quaternary amine.

Numbered embodiment 105.

105. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT and R ^CT each independently comprise at least one quaternary amine.

Numbered embodiment 106. 106. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT and R ^CT each comprise a quaternary amine.

Numbered embodiment 107.

107. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT and the amino acid residue at position Z ⁸ each independently comprise at least one quaternary amine.

Numbered embodiment 108.

108. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT and the amino acid residue at position Z ⁸ each independently comprise a quaternary amine.

Numbered embodiment 109.

109. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT and the amino acid residue at position Z ¹⁰ each independently comprise at least one quaternary amine.

Numbered embodiment 110.

110. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT and the amino acid residue at position Z ¹⁰ each independently comprise a quaternary amine.

Numbered embodiment 111.

111. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ³ and Z ⁸ each independently comprise at least one quaternary amine.

Numbered embodiment 112.

112. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ³ and Z ⁸ each independently comprise a quaternary amine.

Numbered embodiment 113.

113. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ³ and Z ¹⁰ each independently comprise at least one quaternary amine.

Numbered embodiment 114.

114. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ³ and Z ¹⁰ each independently comprise a quaternary amine.

Numbered embodiment 115.

115. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ⁵ and Z ¹⁰ each independently comprise at least one quaternary amine.

Numbered embodiment 116.

116. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ⁵ and Z ¹⁰ each independently comprise a quaternary amine.

Numbered embodiment 117. 117. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ⁸ and Z ¹⁰ each independently comprise at least one quaternary amine.

Numbered embodiment 118.

118. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ⁸ and Z ¹⁰ each independently comprise a quaternary amine.

Numbered embodiment 119.

119. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ⁸ and Z ¹³ each independently comprise at least one quaternary amine.

Numbered embodiment 120.

120. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ⁸ and Z ¹³ each independently comprise a quaternary amine.

Numbered embodiment 121.

121. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ¹⁰ and Z ¹³ each independently comprise at least one quaternary amine.

Numbered embodiment 122.

122. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residues at positions Z ¹⁰ and Z ¹³ each independently comprise a quaternary amine.

Numbered embodiment 123.

123. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT comprises at least one quaternary amine.

Numbered embodiment 124.

124. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT comprises a quaternary amine.

Numbered embodiment 125.

125. The cyclic peptide of any one of the preceding embodiments, wherein R ^CT comprises at least one quaternary amine.

Numbered embodiment 126.

126. The cyclic peptide of any one of the preceding embodiments, wherein R ^CT comprises a quaternary amine.

Numbered embodiment 127.

127. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ³ comprises at least one quaternary amine.

Numbered embodiment 128. 128. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ³ comprises a quaternary amine.

Numbered embodiment 129.

129. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁵ comprises at least one quaternary amine.

Numbered embodiment 130.

130. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁵ comprises a quaternary amine.

Numbered embodiment 131.

131. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁸ comprises at least one quaternary amine.

Numbered embodiment 132.

132. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁸ comprises a quaternary amine.

Numbered embodiment 133.

133. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹⁰ comprises at least one quaternary amine.

Numbered embodiment 134.

134. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹⁰ comprises a quaternary amine.

Numbered embodiment 135.

135. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹² comprises at least one quaternary amine.

Numbered embodiment 136.

136. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹² comprises a quaternary amine.

Numbered embodiment 137.

137. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹³ comprises at least one quaternary amine.

Numbered embodiment 138.

138. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹³ comprises a quaternary amine.

Numbered embodiment 139. 139. The cyclic peptide of any one of the preceding embodiments, wherein the at least one quaternary amine is one or two quaternary amines.

Numbered embodiment 140.

140. The cyclic peptide of any one of the preceding embodiments, wherein each quaternary amine is independently selected from the group consisting of: wherein each R ^ZA is independently selected from the group consisting of: optionally substituted (C1-C20) alkyl and optionally substituted (C1-C20) heteroalkyl; wherein each R ^ZA and R ^ZB is independently selected from the group consisting of: optionally substituted (C1-C20) alkyl and optionally substituted (C1-C20) heteroalkyl;

(c) wherein

(c)(i) each R ^ZA , R ^ZB and R ^zc is independently selected from the group consisting of: optionally substituted (C1-C20) alkyl and optionally substituted (C1-C20) heteroalkyl,

(c)(ii) each R ^ZA is independently selected from the group consisting of: optionally substituted (C1-C20) alkyl and optionally substituted (C1-C20) heteroalkyl, and each R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted (C3-C14) heterocyclic ring, or

(c)(iii) each R^, R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted (C5-C10) bicyclic heterocyclic ring; wherein (d)(i) each R ^ZA and R ^ZB is independently selected from the group consisting of: optionally substituted (C1-C20) alkyl and optionally substituted (C1-C20) heteroalkyl, and each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted (C3-C14) heterocyclyl, or

(d)(ii) each R ^ZA and R ^ZB come together with the N atom to which they are attached to form an optionally substituted (C3-C14) heterocyclyl, and each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted (C3-C14) heterocyclyl, or

(d)(iii) each R ^ZA and R ^ZB come together with the N atom to which they are attached to form an optionally substituted (C3-C14) heterocyclyl, and each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted (C3-C14) heterocyclic ring; come together with the N atom to which they are attached to form an optionally substituted (C5-C14) heteroaromatic ring, and , wherein each R ^ZA is independently selected from the group consisting of: optionally substituted (C1-C20) alkyl and optionally substituted (C1-C20) heteroalkyl, and each R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted (C5-C14) heteroaryl.

Numbered embodiment 141.

141. The cyclic peptide of any one of the preceding embodiments, wherein each quaternary amine is independently selected from the group consisting of: wherein each R ^ZA is independently selected from the group consisting of: optionally substituted (Ci-Cie) alkyl and optionally substituted (Ci-Cs) heteroalkyl; wherein each R ^ZA and R ^ZB is independently selected from the group consisting of: optionally substituted (C1-C16) alkyl and optionally substituted (Ci-Cs) heteroalkyl; wherein

(c)(i) each R ^ZA , R ^ZB and R ^zc is independently selected from the group consisting of: optionally substituted (Ci-Cie) alkyl and optionally substituted (C18Cs) heteroalkyl,

(c)(ii) each R ^ZA is independently selected from the group consisting of: optionally substituted (Ci-Cie) alkyl and optionally substituted (C1-C8) heteroalkyl, and each R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted (C6) heterocyclic ring, or

(c)(iii) each R ^zA , R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted (C8) bicyclic heterocyclic ring; ( ) wherein

(d)(i) each R ^ZA and R ^ZB is independently selected from the group consisting of: optionally substituted (Ci-Cie) alkyl and optionally substituted (C1-C8) heteroalkyl, and each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclyl, or

(d)(ii) each R ^ZA and R ^ZB come together with the N atom to which they are attached to form an optionally substituted (C6) heterocyclyl, and each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclyl, or

(d)(iii) each R ^ZA and R ^ZB come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclyl, and each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclic ring; r-

(e) , wherein each R and R come together with the N atom to which they are attached to form an optionally substituted (Ce) heteroaromatic ring; and , wherein each R ^7A is independently selected from the group consisting of: optionally substituted (Ci-Cie) alkyl and optionally substituted (Ci-Cs) heteroalkyl, and each R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted (Ce) heteroaryl.

Numbered embodiment 142.

142. The cyclic peptide of any one of the preceding embodiments, wherein each quaternary amine is independently selected from the group consisting of: wherein each R ^ZA is independently selected from the group consisting of: optionally substituted (Ci-Cie) alkyl and optionally substituted (Ci-Cs) heteroalkyl; wherein each R ^ZA and R ^ZB is independently selected from the group consisting of: optionally substituted (Ci-Cie) alkyl and optionally substituted (Ci-Cs) heteroalkyl;

(c) wherein (c)(i) each R ^ZA , R ^ZB and R ^zc is independently selected from the group consisting of: optionally substituted (Ci-Cie) alkyl and optionally substituted (Ci-Cs) heteroalkyl,

(c)(ii) each R ^ZA is independently selected from the group consisting of: optionally substituted (C1-C3) alkyl and optionally substituted (C1-C3) heteroalkyl, and each R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclic ring, or

(c)(iii) each R^, R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted (Cs) bicyclic heterocyclic ring; wherein

(d)(i) each R ^ZA and R ^ZB is independently selected from the group consisting of: optionally substituted (C1-C3) alkyl and optionally substituted (C1-C3) heteroalkyl, and each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclyl, or

(d)(ii) each R ^ZA and R ^ZB come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclyl, and each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclyl, or

(d)(iii) each R ^ZA and R ^ZB come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclyl, and each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclic ring;

(e) , wherein each R and R come together with the N atom to which they are attached to form an optionally substituted (Ce) heteroaromatic ring; and , wherein each R ^7A is independently selected from the group consisting of: optionally substituted (C1-C3) alkyl and optionally substituted (C1-C3) heteroalkyl, and each R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted (Ce) heteroaryl.

Numbered embodiment 143.

143. The cyclic peptide of any one of the preceding embodiments, wherein when each R ^ZA , R ^ZB and/or R ^zc , when present, is/are an optionally substituted alkyl, each optionally substituted alkyl is unsubstituted.

Numbered embodiment 144.

144. The cyclic peptide of any one of the preceding embodiments, wherein when each R ^ZA , R ^ZB and/or R ^zc , when present, is/are an optionally substituted heteroalkyl, each optionally substituted heteroalkyl is unsubstituted.

Numbered embodiment 145.

145. The cyclic peptide of any one of the preceding embodiments, wherein when each R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted heterocyclic ring, the optionally substituted heterocyclic ring is unsubstituted or substituted with one or more substitutents independently selected from the group consisting of Fluoro and (C1-C3) alkyl.

Numbered embodiment 146.

146. The cyclic peptide of any one of the preceding embodiments, wherein when each R ^ZA , R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted bicyclic heterocyclic ring, the optionally substituted bicyclic heterocyclic ring is unsubstituted.

Numbered embodiment 147.

147. The cyclic peptide of any one of the preceding embodiments, wherein when each R ^ZA and R ^ZB come together with the N atom to which they are attached to form an optionally substituted heterocyclyl, the optionally substituted heterocyclyl is unsubstituted.

Numbered embodiment 148.

148. The cyclic peptide of any one of the preceding embodiments, wherein when each R ^ZB and R ^zc come together with the N atom to which they are attached to form an optionally substituted heteroaryl, the optionally substituted heteroaryl is unsubstituted.

Numbered embodiment 149.

149. The cyclic peptide of any one of the preceding embodiments, wherein when each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted heterocyclyl, the optionally substituted heterocyclyl is unsubstituted.

Numbered embodiment 150. 150. The cyclic peptide of any one of the preceding embodiments, wherein when each R ^zc and R ^ZD come together with the N atom to which they are attached to form an optionally substituted heterocyclic ring, the optionally substituted heterocyclic ring is unsubstituted.

Numbered embodiment 151.

151. The cyclic peptide of any one of the preceding embodiments, wherein when each R ^7A and R ^ZB come together with the N atom to which they are attached to form an optionally substituted heteroaromatic ring, the optionally substituted heteroaromatic ring is unsubstituted.

Numbered embodiment 152.

152. The cyclic peptide of any one of the preceding embodiments, wherein each quaternary amine is independently selected from the group consisting of:

Numbered embodiment 153.

153. The cyclic peptide of any one of the preceding embodiments, wherein each quaternary amine has an AN’ counterion that is the same for each quaternary amine and is selected from the group consisting of: acetate, adipate, benzoate, benzenesulfonate, citrate, decanoate, chloride, lactate, maleate, methanesulfonate, oxalate, pivalate, propionate, succinate, sulfate, tartrate, or trifluoroacetate.

Numbered embodiment 154.

154. The cyclic peptide of any one of the preceding embodiments, wherein at least one of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁵ , when an amino acid residue is present at the position, each independently comprise(s) at least one masked amine and/or masked amide.

Numbered embodiment 155.

155. The cyclic peptide of any one of the preceding embodiments, wherein at least one of the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) a masked amine and/or masked amide.

Numbered embodiment 156.

156. The cyclic peptide of any one of the preceding embodiments, wherein at least one of the amino acid residues at positions Z ⁵ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) at least one masked amine and/or masked amide.

Numbered embodiment 157.

157. The cyclic peptide of any one of the preceding embodiments, wherein at least one of the amino acid residues at positions Z ⁵ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position, each independently comprise(s) a masked amine and/or masked amide.

Numbered embodiment 158.

158. The cyclic peptide of any one of the preceding embodiments, wherein at least one of the amino acid residues at positions Z ⁵ , Z ⁸ , and/or Z ¹³ , each independently comprise(s) at least one masked amine and/or masked amide.

Numbered embodiment 159.

159. The cyclic peptide of any one of the preceding embodiments, wherein at least one of the amino acid residues at positions Z ⁵ , Z ⁸ , and/or Z ¹³ , each independently comprise(s) a masked amine and/or masked amide.

Numbered embodiment 160.

160. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁵ comprises at least one masked amine and/or masked amide.

Numbered embodiment 161.

161. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁵ comprises a masked amine and/or masked amide.

Numbered embodiment 162.

162. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁸ comprises at least one masked amine and/or masked amide.

Numbered embodiment 163.

163. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁸ comprises a masked amine and/or masked amide.

Numbered embodiment 164.

164. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹³ comprises at least one masked amine and/or masked amide.

Numbered embodiment 165.

165. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹³ comprises a masked amine and/or masked amide.

Numbered embodiment 166.

166. The cyclic peptide of any one of the preceding embodiments, wherein at least one of the masked amine(s) is an amine in a backbone amide, wherein each amine in a backbone amide is independently substituted with (C1-C3) alkyl.

Numbered embodiment 167. 167. The cyclic peptide of any one of the preceding embodiments, wherein at least one of the masked amine(s) and/or masked amide is present in the side chain of the amino acid residue comprising said masked amine and/or masked amide.

Numbered embodiment 168.

168. The cyclic peptide of any one of the preceding embodiments, wherein at least one of the masked amine(s) and/or masked amide(s) is independently selected from the group consisting of:

(a) , wherein each R ^YA is independently selected from the group consisting of: optionally substituted (Ci-Cio) alkyl and optionally substituted (C1-C20) heteroalkyl, and each R ^YB is independently selected from the group consisting of: hydrogen, optionally substituted (C1-C10) alkyl and optionally substituted (C1-C20) heteroalkyl; wherein each R ^YC is independently selected from the group consisting of: optionally substituted (C1-C10) alkyl and optionally substituted (C1-C20) heteroalkyl, and each R ^YD is independently selected from the group consisting of: hydrogen, optionally substituted (C1-C10) alkyl and optionally substituted (C1-C20) heteroalkyl;

(c) , wherein each R ^YF is independently selected from the group consisting of: optionally substituted (C1-C10) alkyl and optionally substituted (C1-C20) heteroalkyl, and each R ^YF is independently selected from the group consisting of: hydrogen, optionally substituted (C1-C10) alkyl and optionally substituted (C1-C20) heteroalkyl; and

(d) , wherein each R ^YG and R ^YH is independently selected from the group consisting of: optionally substituted (C1-C10) alkyl and optionally substituted (C1-C20) heteroalkyl.

Numbered embodiment 169.

169. The cyclic peptide of any one of the preceding embodiments, wherein at least one of the masked amine(s) and/or masked amide(s) is independently selected from the group consisting of:

(a) , wherein each R ^YA is independently selected from the group consisting of: optionally substituted (C1-C5) alkyl and optionally substituted (C1-C15) heteroalkyl, and each R ^YB is independently selected from the group consisting of: hydrogen, optionally substituted (C1-C5) alkyl and optionally substituted (C1-C15) heteroalkyl; wherein each R ^YC is independently selected from the group consisting of: optionally substituted (C1-C5) alkyl and optionally substituted (C1-C15) heteroalkyl, and each R ^YD is independently selected from the group consisting of: hydrogen, optionally substituted (C1-C5) alkyl and optionally substituted (C1-C15) heteroalkyl;

(c) wherein each R ^YF is independently selected from the group consisting of: optionally substituted (C1-C5) alkyl and optionally substituted (C1-C15) heteroalkyl, and each R ^YF is independently selected from the group consisting of: hydrogen, optionally substituted (C1-C5) alkyl and optionally substituted (C1-C15) heteroalkyl; and

(d) , wherein each R ^YG and R ^YH is independently selected from the group consisting of: optionally substituted (C1-C5) alkyl and optionally substituted (C1-C15) heteroalkyl.

Numbered embodiment 170.

170. The cyclic peptide of any one of the preceding embodiments, wherein when each R ^YA R ^YB , R ^YC R ^YD , R ^YE R ^W , R ^YG and/or R ^YH is optionally substituted alkyl, each optionally substituted alkyl is independently unsubstituted or substituted with one or more substitutents independently selected from the group consisting of: -CO2H and a quaternary amine of any one of the preceding embodiments, for example, -N ⁺ (CH3)3.

Numbered embodiment 171.

171. The cyclic peptide of any one of the preceding embodiments, wherein when each R ^YA R ^YB , R ^YC R ^YD , R ^YF R ^YF , R ^YG and/or R ^YH is optionally substituted heteroalkyl, each optionally substituted heteroalkyl is independently unsubstituted or substituted with one or more substitutents independently selected from the group consisting of: -CO2H and a quaternary amine of any one of the preceding embodiments, for example, -N ⁺ (CH3)3.

Numbered embodiment 172.

172. The cyclic peptide of any one of the preceding embodiments, wherein at least one of the masked amine(s) and/or masked amide(s) is independently selected from the group consisting of:

Numbered embodiment 173.

173. The cyclic peptide of any one of the preceding embodiments, wherein the at least one amino acid residue(s) each independently comprising at least one masked amine and/or masked amide is/are independently selected from the group consisting of: NMe7MeW, AAMPhe, Paf(Ac), AEF(Ac), AcAEF, AEF(AcCh), AEF(Me)2, AEF(N(Me)2), AEF(MePrpa), AEF(NMe), Dab(NMeAc), Dab(NMecarn), Dab(NMeC0mPEG6), Dab(NMecPEG2a), Dab(NMecPEG3a), Dab(NMecPEG5a), Dab(NMecPEG5aCO)-, Dap(Ac), Dap(NMeAc), K(Ac), K(NMeAc), K(NMeC0mPEG6), K(NMeCOPEG4N+Me3), K(NMeC0PEG5a), K(NMecPEG5a), K(NMePEG5a), K(NMePEG3a), K(NmPEG6Ac), NMe3Pya, NMebAla, NMeDTyr, N(N(Me)), N(NMe), N(N(Me)2), Q(N(Me)2), Q(NHtBu) and Tetrazole(NMe). Numbered embodiment 174.

174. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ³ is replaced with an amino acid residue selected from the group consisting of: APEG2ser, APEG2Ser, APEG2Ser(S*), e(c), e(C), hk(Me)3, k(5cpa), k(cPEG3a), k(d), k(D), k(dPEG12Ac), k(dPEG6Ac), k(dPEG9Ac), k(Me)3, K(Me)3, k(PEG2PEG2gEC12), k(PEG2PEG2gEC14), k(PEG2PEG2PEG2PEG2gEC12), k(PEG2PEG6gEC12), SP6, APEG2Ser(RS), gPEG2Ser and k(PEG2PEG2gE(c)C12.

Numbered embodiment 175.

175. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ³ is replaced with an amino acid residue comprising at least one quaternary amine selected from the group consisting of: APEG2ser, APEG2Ser, e(c), e(C), hk(Me)3, k(5cpa), k(cPEG3a), k(d), k(D), K(Me)3 and k(Me)3.

Numbered embodiment 176.

176. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ³ is replaced with an amino acid residue that is r substituted on the side chain with one or more groups selected from: -OH, -(C1-C4) alkyl, -O(Ci-C4) alkyl, and -CN.

Numbered embodiment 177.

177. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ³ is replaced with a hydrophilic amino acid residue.

Numbered embodiment 178.

178. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ³ is replaced with a basic amino acid residue.

Numbered embodiment 179. 179. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ³ is replaced with an acidic amino acid residue.

Numbered embodiment 180.

180. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 181.

181. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁴ is the residue of Abu or the residue of an amino acid comprising a sulfhydryl group selected from the group consisting of: Pen, C or aMeC.

Numbered embodiment 182.

182. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁴ is the residue of Pen.

Numbered embodiment 183.

183. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁵ is replaced with an amino acid residue selected from the group consisting of: A, APEG2Ser(S*), Dab(Me)3, F, Gab, K(cPEG3a), K(Me)3, K(PEG2PEG2gEC12), K(PEG2PEG2gEC14), L, N, N(N(Me)), N(NMe), Q and W.

Numbered embodiment 184.

184. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁵ is replaced with an amino acid residue comprising at least one quaternary amine selected from the group consisting of: APEG2Ser(S*), Dab(Me)3, K(cPEG3a) and K(Me)3.

Numbered embodiment 185.

185. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is N(N(Me) ) substituted on the side chain with one or more groups selected from: -OH, -(C1-C4) alkyl, -O(Ci-C4) alkyl, and -CN. Numbered embodiment 186.

186. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁵ is replaced with an aromatic amino acid residue.

Numbered embodiment 187.

187. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁵ is replaced with an aliphatic amino acid residue.

Numbered embodiment 188.

188. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁵ is replaced with a hydrophilic amino acid residue.

Numbered embodiment 189.

189. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁵ is replaced with a basic amino acid residue.

Numbered embodiment 190.

190. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁵ is replaced with an acidic amino acid residue.

Numbered embodiment 191.

191. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 192.

192. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁶ is replaced with an amino acid residue selected from the group consisting of: A and L. Numbered embodiment 193.

193. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁶ is replaced with an amino acid residue that is T substituted on the side chain with one or more groups selected from: -OH, -(C1-C4) alkyl, -O(Ci-C4) alkyl, and -CN.

Numbered embodiment 194.

194. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁶ is replaced with an aliphatic amino acid residue.

Numbered embodiment 195.

195. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁶ is replaced with a polar amino acid residue.

Numbered embodiment 196.

196. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 197.

197. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁷ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁷ is replaced with an amino acid residue selected from the group consisting of: W, 7(3NAcPh)W, 7CF3W, Nme7MeW, 2Nal, A, F and L.

Numbered embodiment 198.

198. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁷ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁷ is replaced with an amino acid residue that is 7MeW substituted on the side chain with one or more groups selected from: -OH, -(C1-C4) alkyl, -O(Ci-C4) alkyl, and -CN.

Numbered embodiment 199. 199. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁷ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁷ is replaced with an aromatic amino acid residue.

Numbered embodiment 200.

200. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁷ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁷ is replaced with an aliphatic amino acid residue.

Numbered embodiment 201.

201. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁷ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 202.

202. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁸ is replaced with an amino acid residue selected from the group consisting of: K(NMeAC), Q, 4AmPhe, A, AIB, APEG2Ser, APEG2Ser(R*), APEG2Ser(S*), Cit, Dab(NMeAc), Dab(NMecam), Dab(NMeCarn), Dab(NMeCOmPEG6), Dab(NMecPEG2a), Dab(NMecPEG3a), Dab(NMecPEG5a), Dap(NMeAc), F, K(4cpg), K(Ac), K(cPEG3a), K(Me)3, K(NMeCOmPEG6), K(NMePEG3a), K(NmPEG6Ac), K(PEG2PEG2gEC12), K(PEG2PEG2gEC14), L, Paf(Ac), Q(N(Me)2), Q(NHtBu), W, Y and K(cPEG3aCO).

Numbered embodiment 203.

203. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁸ is replaced with an amino acid residue comprising at least one quaternary amine selected from the group consisting of: APEG2Ser, APEG2ser, APEG2Ser(R*), APEG2Ser(S*), Dab(NMecarn), Dab(NmeCam), Dab(NMecPEG2a), Dab(NMecPEG3a), Dab(NMecPEG5a), K(cPEG3a), K(Me)3 and K(NMePEG3a).

Numbered embodiment 204.

204. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is K(NMeAc) substituted on the side chain with one or more groups selected from: -OH, -(C1-C4) alkyl, -O(Ci-C4) alkyl, and -CN.

Numbered embodiment 205.

205. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁸ is replaced with an aromatic amino acid residue.

Numbered embodiment 206.

206. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁸ is replaced with an aliphatic amino acid residue.

Numbered embodiment 207.

207. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁸ is replaced with a hydrophilic amino acid residue.

Numbered embodiment 208.

208. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁸ is replaced with a basic amino acid residue.

Numbered embodiment 209.

209. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ⁸ is replaced with an acidic amino acid residue.

Numbered embodiment 210.

210. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁸ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 211. 211. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁹ is the residue of an amino acid comprising a sulfhydryl group selected from the group consisting of: Pen, C or aMeC.

Numbered embodiment 212.

212. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ⁹ is the residue of Pen.

Numbered embodiment 213.

213. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue selected from the group consisting of: AEF, 4DMPEF, 4DMPzEF, 4TMABYF, ACHMF, AEF((Ch)cPEG3a), AEF(Ac), AEF(AcCh), AEF(aPEG2a), AEF(BisMEP), AEF(BisMEPa), AEF(BisPEG2a)(RS), AEF(BisPEG2a)(S*), AEF(G), AEF(Me)2, AEF(MEP), AEF(MePrpa), AEF(N(Me)2), AEF(NHCh), AEF(NHcPEG3a), AEF(NMe), AEF(NMe2mPEG3), AEF(NMe3), AEF(NMeBismPEG3), AEF(NMePEG2a), AEF(NmPEG6), AEF(NsCh), AEF(PEG2a), AEF(SPD), APEG2F, APEG3F, dFPPEG3F, Diazabiclyclooctane6F, DMMMF, DMPMF, DMTASF, F(4G), F(4N3), F(4TzlDMA4mPEG), F(4TzlMME), F(4TzlMMol), F(4TzlMMo3), F(4TzlMMo4), F(4TzlTMAl), F(4TzlTMA2), F(4TzlTMA3), F(4TzlTMA4), F(4TzlTMA5), GPEG3F, hFTMAPF, MMoEF, MMoPF, MMPEG3F, morfTMA4F, mPEG2TMA2F, mPEG2TMA4F, mPEG3TMA4F, MPzPEG3F, MTASF, NPyEF, NPyPEG3F, PiperazinequatF, TBAPEG3F, TMA3F, TMA4F, TMA6F, TMA8F, Tzl(Ch), TzlChmPEG, TzlChmPEG3, Y(C90H), Y(OEOXIMECh), Y(OTzlCh), Y(OTzlChC16), Y(OTzlChC8), Y(0TzlClaC8), Y(OTzlChmPEG), Y(0TzlChmPEG3), Y(OTzlPEG3a), Y(OTzlPEG4a), Y(0TzlTMA4), Y(OZOXIMECh), YC8CO(NHPEG3a), YC8COPip, YCF2H, ACHMF(R*, S*), ACHMF(S*, S*), AEF(cPEG3a), APF, F(4TzlAme2), F(4TzlG2), F(4TzlMMo7) and F(4TzlTMA7).

Numbered embodiment 214.

214. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue comprising at least one quaternary amine selected from the group consisting of: 4DMPEF, 4DMPzEF, 4TMABYF, ACHMF, ACHMF(R*, S*), ACHMF(S*, S*), AEF((Ch)cPEG3a), AEF(AcCh), AEF(aPEG2a), AEF(cPEG3a), AEF(BisMEPa), AEF(BisPEG2a)(RS), AEF(BisPEG2a)(S*), AEF(MePrpa), AEF(NHcPEG3a), AEF(NMe2mPEG3), AEF(NMe3), AEF(NMeBismPEG3), AEF(NMePEG2a), AEF(NsCh), AEF(NHCh), AEF(PEG2a), AEF(SPD), APEG2F, APEG3F, dFPPEG3F, Diazabiclyclooctane6F, DMMMF, DMPMF, DMTASF, F(4TzlDMA4mPEG), F(4TzlMMol), F(4TzlMMo3), F(4TzlMMo4), F(4TzlTMAl), F(4TzlTMA2), F(4TzlTMA3), F(4TzlTMA4), F(4TzlTMA5), F(4TzlMMo7), F(4TzlTMA7), hFTMAPF, MMoEF, MMoPF, MMPEG3F, morfTMA4F, mPEG2TMA2F, mPEG2TMA4F, mPEG3TMA4F, MPzPEG3F, MTASF, NPyEF, NPyPEG3F, PiperazinequatF, TBAPEG3F, TMA3F, TMA4F, TMA6F, TMA8F, Tzl(Ch), TzlChmPEG, TzlChmPEG3, Y(OEOXIMECh), Y(OTzlCh), Y(OTzlChC16), Y(OTzlChC8), Y(OTzlClaC8), Y(OTzlChmPEG), Y(OTzlChmPEG3), Y(OTzlPEG3a), Y(OTzlPEG4a), Y(OTzlTMA4), Y(OZOXIMECh) and YC8CO(NHPEG3a).

Numbered embodiment 215.

215. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is TMAPF substituted on the side chain with one or more groups selected from: -OH, -(C1-C4) alkyl, -O(Ci-C4) alkyl, and -CN.

Numbered embodiment 216.

216. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue having the following structure: wherein

Ln ¹ is selected from the group consisting of: an -0- atom, or _; wherein the right hand side of each depicted structure is bound to Ln ² ; Ln ² is a linker moiety comprising

(i) at least 4 atoms, for example an optionally substituted alkylene comprising at least C4 atoms, an optionally substituted heteroalkylene comprising at least C4 atoms, an optionally substituted heteroalkenylene comprising at least C4 atoms, an optionally substituted alkynylene comprising at least C4 atoms, an optionally substituted alkylene - optionally substituted carbocyclyl comprising at least C4 atoms, or an optionally substituted alkylene - optionally substituted heterocyclyl comprising at least C4 atoms, for example optionally substituted (C4-C20) alkylene, optionally substituted (C4-C20) heteroalkylene, optionally substituted (C4-C20) heteroalkenylene, optionally substituted (C4-C20) alkynylene, optionally substituted (C1-C3) alkylene - optionally substituted (C3-C10) carbocyclyl, or optionally substituted (C1-C3) alkylene - optionally substituted (C3-C14) heterocyclyl, or

(ii) at least 2 atoms when example an optionally substituted alkylene comprising at least C2 atoms or an optionally substituted heteroalkylene comprising at least C2 atoms, for example optionally substituted (C2-C20) alkylene or optionally substituted (C2-C20) heteroalkylene; and

Qu ¹ is a quaternary amine.

Numbered embodiment 217.

217. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue having the following structure: wherein Ln ¹ , Ln ² and Qu ¹ are as defined in any one of the preceding embodiments.

Numbered embodiment 218.

218. The cyclic peptide of any one of the preceding embodiments, wherein Qu ¹ is a quaternary amine as defined in any one of the preceding embodiments.

Numbered embodiment 219.

219. The cyclic peptide of any one of the preceding embodiments, wherein Ln ¹ is an -0- atom.

Numbered embodiment 220.

220. The cyclic peptide of any one of the preceding embodiments, wherein Ln ² is selected from the group consisting of: optionally substituted (C4-C15) alkylene, optionally substituted (C4-C15) heteroalkylene, optionally substituted (C4-C15) heteroalkenylene, optionally substituted (C4-C15) alkynylene, optionally substituted (C1-C3) alkylene - optionally substituted (C5-C7) carbocyclyl, or optionally substituted (C1-C3) alkylene - optionally substituted (C5-C7) heterocyclyl.

Numbered embodiment 221.

221. The cyclic peptide of any one of the preceding embodiments, wherein Ln ² is selected from the group consisting of: optionally substituted (C4-C10) alkylene, optionally substituted (C4-C10) heteroalkylene, optionally substituted (C4-C10) heteroalkenylene, optionally substituted (C4-C10) alkynylene, optionally substituted (C1-C3) alkylene - optionally substituted (Ce) carbocyclyl, or optionally substituted (C1-C3) alkylene - optionally substituted (Ce) heterocyclyl.

Numbered embodiment 222.

222. The cyclic peptide of any one of the preceding embodiments, wherein Ln ² is selected from the group consisting of: optionally substituted (C4-Cs) alkylene, optionally substituted (C4-Cs) heteroalkylene, optionally substituted (C4-Cs) heteroalkenylene, optionally substituted (C4-Cs) alkynylene, optionally substituted (C1-C3) alkylene - optionally substituted (Ce) carbocyclyl, or optionally substituted (C1-C3) alkylene - optionally substituted (Ce) heterocyclyl.

Numbered embodiment 223.

223. The cyclic peptide of any one of the preceding embodiments, wherein when Ln ¹ is selected from the group consisting of optionally substituted (C2-C15) alkylene or optionally substituted (C2-C15) heteroalkylene. Numbered embodiment 224.

224. The cyclic peptide of any one of the preceding embodiments, wherein when Ln ¹ is s selected from the group consisting of optionally substituted (C2-C10) alkylene or optionally substituted (C2-C10) heteroalkylene. Numbered embodiment 225.

225. The cyclic peptide of any one of the preceding embodiments, wherein when Ln ¹ is s selected from the group consisting of optionally substituted (C2-C5) alkylene or optionally substituted (C2-C5) heteroalkylene. Numbered embodiment 226.

226. The cyclic peptide of any one of the preceding embodiments, wherein when Ln ² is optionally substituted alkylene, the optionally substituted alkylene is unsubstituted or is substituted with one or more substituents independently selected from the group consisting of Fluoro.

Numbered embodiment 227.

227. The cyclic peptide of any one of the preceding embodiments, wherein when Ln ² is optionally substituted heteroalkylene, the optionally substituted heteroalkylene is unsubstituted or is substituted with one or more substituents independently selected from the group consisting of: (C1-C3) alkyl, , =0 (i.e., two geminal hydrogens on a carbon atom of the heteroalkylene are replaced with the group =0), or a quaternary amine of any one of the preceding embodiments, for example, -N ⁺ (CH3)3.

Numbered embodiment 228.

228. The cyclic peptide of any one of the preceding embodiments, wherein when Ln ² is optionally substituted heteroalkenylene, the optionally substituted heteroalkenylene is unsubstituted.

Numbered embodiment 229.

229. The cyclic peptide of any one of the preceding embodiments, wherein when Ln ² is optionally substituted alkynylene, the optionally substituted alkynylene is unsubstituted.

Numbered embodiment 230.

230. The cyclic peptide of any one of the preceding embodiments, wherein when Ln ² is optionally substituted alkylene - optionally substituted carbocyclyl, the optionally substituted alkylene - optionally substituted carbocyclyl is unsubstituted.

Numbered embodiment 231.

231. The cyclic peptide of any one of the preceding embodiments, wherein when Ln ² is optionally substituted alkylene - optionally substituted heterocyclyl, the optionally substituted alkylene - optionally substituted heterocyclyl is unsubstituted.

Numbered embodiment 232.

232. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue having the following structure: wherein

,

Ln is selected from the group consisting of: an -0- atom, _; wherein the right hand side of each depicted structure is bound to Ln ⁴ ;

Ln ⁴ is a linker moiety comprising at least 2 atoms, for example an optionally substituted alkylene comprising at least C2 atoms, an optionally substituted heteroalkylene comprising at least C2 atoms, or an optionally substituted alkynylene comprising at least C2 atoms, for example optionally substituted (C2-C20) alkylene, optionally substituted (C2-C20) heteroalkylene or optionally substituted (C2-C20) alkynylene; and

Qu ² is a (C3-C14) heterocyclyl quaternary amine, a (C5-C14) heteroaryl quaternary amine or a (C5-C14) bicyclic heterocyclyl quaternary amine, for example, a (C3-C14) heterocyclyl quaternary amine selected from the group consisting of: amine selected from the group consisting of: , or a (C5-C14) bicyclic heterocyclyl quaternary amine selected from the group consisting of

Numbered embodiment 233.

233. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue having the following structure: wherein Ln ³ , Ln ⁴ and Qu ² are as defined in any one of the preceding embodiments.

Numbered embodiment 234.

234. The cyclic peptide of any one of the preceding embodiments, wherein Qu ² is a quaternary amine as defined in any one of the preceding embodiments.

Numbered embodiment 235.

235. The cyclic peptide of any one of the preceding embodiments, wherein Ln ³ is an -0- atom.

Numbered embodiment 236.

236. The cyclic peptide of any one of the preceding embodiments, wherein Ln ⁴ is selected from the group consisting of: optionally substituted (C2-C15) alkylene, optionally substituted (C2-C15) heteroalkylene or optionally substituted (C2-C15) alkynylene.

Numbered embodiment 237.

237. The cyclic peptide of any one of the preceding embodiments, wherein Ln ⁴ is selected from the group consisting of: optionally substituted (C2-C10) alkylene, optionally substituted (C2-C10) heteroalkylene or optionally substituted (C2-C10) alkynylene.

Numbered embodiment 238.

238. The cyclic peptide of any one of the preceding embodiments, wherein Ln ⁴ is selected from the group consisting of: optionally substituted (Ci-Cs) alkylene, optionally substituted (C2-C8) heteroalkylene or optionally substituted (C2-Cs) alkynylene.

Numbered embodiment 239.

239. The cyclic peptide of any one of the preceding embodiments, wherein when Ln ⁴ is optionally substituted alkylene, the optionally substituted alkylene is unsubstituted or is substituted with one or more substituents independently selected from the group consisting of Fluoro.

Numbered embodiment 240. 240. The cyclic peptide of any one of the preceding embodiments, wherein when Ln ⁴ is optionally substituted heteroalkylene, the optionally substituted heteroalkylene is unsubstituted or is substituted with one or more substituents independently selected from the group consisting of: (C1-C3) alkyl, , =0 (i.e., two geminal hydrogens on a carbon atom of the heteroalkylene are replaced with the group =0), or a quaternary amine of any one of the preceding embodiments, for example, -N ⁺ (CH3)3.

Numbered embodiment 241.

241. The cyclic peptide of any one of the preceding embodiments, wherein when Ln ⁴ is optionally substituted alkynylene, the optionally substituted alkynylene is unsubstituted.

Numbered embodiment 242.

242. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁰ is replaced with an aromatic amino acid residue.

Numbered embodiment 243.

243. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹⁰ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 244.

244. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹¹ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹¹ is replaced with an amino acid residue selected from the group consisting of: A, F, L and W.

Numbered embodiment 245.

245. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹¹ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹¹ is replaced with an amino acid residue that is 2Nal substituted on the side chain naphthalene ring with one or more groups selected from: -OH, -(C1-C4) alkyl, -O(Ci-C4) alkyl, and -CN.

Numbered embodiment 246. 246. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹¹ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹¹ is replaced with an aromatic amino acid residue.

Numbered embodiment 247.

247. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹¹ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹¹ is replaced with an aliphatic amino acid residue.

Numbered embodiment 248.

248. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹¹ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 249.

249. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹² is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹² is replaced with an amino acid residue selected from the group consisting of: A, Achx, Achx(diF), Acpx, Aib, AIB, aMeK, aMeL, Chg, diFCpx, F, L, Pip(NMe), Pip(NMe2), W and diFAchx.

Numbered embodiment 250.

250. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹² is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹² is replaced with an amino acid residue comprising at least one quaternary amine selected from the group consisting of: Pip(NMe2).

Numbered embodiment 251.

251. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹² is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹² is replaced with an amino acid residue that is THP substituted on the side chain with one or more groups selected from: -OH, -(C1-C4) alkyl, -O(Ci-C4) alkyl, and -CN.

Numbered embodiment 252.

252. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹² is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹² is replaced with an aromatic amino acid residue.

Numbered embodiment 253.

253. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹² is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹² is replaced with an aliphatic amino acid residue.

Numbered embodiment 254

254. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹² is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹² is replaced with a polar amino acid residue.

Numbered embodiment 255.

255. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹² is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹² is replaced with a hydrophilic amino acid residue.

Numbered embodiment 256.

256. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹² is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹² is replaced with a basic amino acid residue.

Numbered embodiment 257.

257. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹² is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 258.

258. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with an amino acid residue selected from the group consisting of: K(NMeAC), E, A, AIB, aMeE, APEG2Ser, APEG2Ser(S*), Cit, Dab(NMeAc), Dab(NMecarn), Dab(NMeC0mPEG6), Dab(NMecPEG2a), Dab(NMecPEG3a), Dap(Ac), Dap(NMeAc), E(c), E(C), F, K(5cpa), K(Ac), K(cPEG3a), K(d), K(D), K(dPEG12Ac), K(dPEG6Ac), K(dPEG9Ac), K(Me)3, K(NMeC0mPEG6), K(NMeCOPEG4N+Me3), K(NMePEG3a), K(NmPEG6Ac), K(PEG2PEG2gEC12), K(PEG2PEG2gEC14), K(PEG2PEG2PEG2gEC12), L, Q(N(Me)2), Tetrazole, Tetrazole(NMe), W, K(DFN), K(IPB) and Nle.

Numbered embodiment 259.

259. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with an amino acid residue comprising at least one quaternary amine selected from the group consisting of: APEG2Ser, APEG2Ser(S*), Dab(NMecam), Dab(NMecPEG2a), Dab(NMecPEG3a), K(5cpa), K(cPEG3a), E(c), E(C), K(d), K(D), K(Me)3, K(NMeCOPEG4N+Me3) and K(NMePEG3a).

Numbered embodiment 260.

260. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with an amino acid residue that is K(NMeAc) substituted on the side chain with one or more groups selected from: -OH, -(C1-C4) alkyl, -O(Ci-C4) alkyl, and -CN.

Numbered embodiment 261.

261. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with an aromatic amino acid residue.

Numbered embodiment 262.

262. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with an aliphatic amino acid residue.

Numbered embodiment 263.

263. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with a hydrophilic amino acid residue.

Numbered embodiment 264. 264. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with an acidic amino acid residue.

Numbered embodiment 265.

265. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹³ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 266.

266. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁴ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁴ is replaced with an amino acid residue selected from the group consisting of: K(Ac) and N(NMe).

Numbered embodiment 267.

267. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁴ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁴ is replaced with an amino acid residue that is N substituted on the side chain with one or more groups selected from: -OH, -(C1-C4) alkyl, -O(Ci-C4) alkyl, and -CN.

Numbered embodiment 268.

268. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁴ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁴ is replaced with a hydrophilic amino acid residue.

Numbered embodiment 269.

269. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹⁴ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 270.

270. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z is replaced with an amino acid residue selected from the group consisting of: 3pya, 5CF33Pya, 5MePyridinAla, bAla, dK, dL, F, f, H, h, k, N, NMe3Pya, NMebAla, NMeDTyr, orn, Paf, s, t, THP, v, y and A.

Numbered embodiment 271.

271. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with an amino acid residue that is 3Pya substituted on the side chain with one or more groups selected from: -OH, -(C1-C4) alkyl, -O(Ci-C4) alkyl, and -CN.

Numbered embodiment 272.

272. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with an amino acid residue comprising at least one quaternary amine selected from the group consisting of: NMe3Pya.

Numbered embodiment 273.

273. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ^{l 3} is replaced with an aromatic amino acid residue.

Numbered embodiment 274.

274. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with an aliphatic amino acid residue.

Numbered embodiment 275.

275. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with a polar amino acid residue.

Numbered embodiment 276.

276. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with a hydrophilic amino acid residue. Numbered embodiment 277.

277. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with a basic amino acid residue.

Numbered embodiment 278.

278. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹³ is replaced with a non-polar amino acid residue.

Numbered embodiment 279.

279. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹⁵ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 280.

280. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue selected from the group consisting of: 4diFPro, NMeDTyr, NMeK(PEG2PEG2C12), NMeK(PEG2PEG2C14), NMeK(PEG2PEG2gEC12), NMeK(PEG2PEG2gEC14), NMeK(PEG2PEG2K(PEG2PEG2gEC12)2), NMeK(PEG2PEG2K(PEG2PEG2PEG2PEG2gEC12)2), NMeK(PEG2PEG2PEG2gEC12), NMeK(PEG2PEG2PEG2PEG2gEC12), NMeK(PEG2PEG6gEC12), NMeK(PEG2PEG6gEC14), NMeK(SP6PEG2PEG2C12) and NMeK(SP6PEG2PEG2gEC12).

Numbered embodiment 281.

281. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue comprising at least one quaternary amine selected from the group consisting of: NMeK(SP6PEG2PEG2C12) and NMeK(SP6PEG2PEG2gEC12).

Numbered embodiment 282.

282. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is Sar substituted on the side chain with one or more groups selected from: -OH, -(C1-C4) alkyl, -O(Ci-C4) alkyl, and -CN.

Numbered embodiment 283.

283. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁶ is replaced with an aromatic amino acid residue.

Numbered embodiment 284.

284. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁶ is replaced with an acidic amino acid residue.

Numbered embodiment 285.

285. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁶ is replaced with a polar amino acid residue.

Numbered embodiment 286.

286. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁶ is replaced with a hydrophilic amino acid residue.

Numbered embodiment 287.

287. The cyclic peptide of any one of the preceding embodiments, wherein when the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position, the amino acid residue at position Z ¹⁶ is replaced with a non-polar amino acid residue.

Numbered embodiment 288.

288. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue at position Z ¹⁶ is replaced with an amino acid residue that is different from the amino acid residue recited at said position.

Numbered embodiment 289. 289. The cyclic peptide of any one of the preceding embodiments, wherein the amino acid residue(s) specified at a given position are substituted on the side chain with one or more groups selected from: -OH, -(C1-C4) alkyl, -O(Ci-C4) alkyl, and -CN.

Numbered embodiment 290.

290. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT is selected from the group consisting of: -C(O)-optionally substituted (C1-C15) alkyl and -C(O)- optionally substituted (C1-C35) heteroalkyl.

Numbered embodiment 291.

291. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT is selected from the group consisting of: -C(O)-optionally substituted (C1-C10) alkyl and -C(O)- optionally substituted (C1-C35) heteroalkyl.

Numbered embodiment 292.

292. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT is selected from the group consisting of: -C(O)-optionally substituted (Ci-Cs) alkyl and -C(O)-optionally substituted (C1-C30) heteroalkyl.

Numbered embodiment 293.

293. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT is selected from the group consisting of: -C(O)-optionally substituted (Ci-Ce) alkyl and -C(O)-optionally substituted (C1-C30) heteroalkyl.

Numbered embodiment 294.

294. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT is selected from the group consisting of: (d)gEPEG2PEG2CO, 4cpgCO, 5cpaCO, AcdPEG12CO, AcdPEG6CO, AcdPEG9CO, C12gEPEG2PEG2CO, C14gEPEG2PEG2CO, CF3CO, CF3propylamide, cPEG2gCO, cPEG3aCO, cPEG3gCO, cPEG5aCO, EtCO, F3CO, MeCO, mPEG3C0, mPEG6CO, cPEG3AmCO, DFNCO, DFNPEG2PEG2CO, IPBCO and IPBPEG2PEG2CO.

Numbered embodiment 295.

295. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT is an - C(O)-optionally substituted (C1-C20) alkyl, for example, 4cpgCO, CF3CO, CF3propylamide, EtCO, F3CO, MeCO or 5cpaCO.

Numbered embodiment 296.

296. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT is an - C(O)-optionally substituted (C1-C20) alkyl that comprises a quaternary amine, for example, 5cpaCO. Numbered embodiment 297.

297. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT is an - C(O)-optionally substituted (C1-C40) heteroalkyl, for example, AcdPEG12CO, AcdPEG6CO, AcdPEG9CO, C12gEPEG2PEG2CO, cPEG2gCO, cPEG3gCO, mPEG3C0, mPEG6C0, (d)gEPEG2PEG2CO, cPEG3aCO, and cPEG5aCO.

Numbered embodiment 298.

298. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT is an - C(O)-optionally substituted (C1-C40) heteroalkyl that comprises a quaternary amine, for example, (d)gEPEG2PEG2CO, cPEG3aCO, cPEG5aCO.

Numbered embodiment 299.

299. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT is an - C(O)-optionally substituted heteroalkyl that comprises a hydrophilic polymer, for example, polyethylene glycol (PEG).

Numbered embodiment 300.

300. The cyclic peptide of any one of the preceding embodiments, wherein R ^NT is an - C(O)-optionally substituted heteroalkyl that comprises the formula -[O-CH2CH2]n-, wherein n is an integer, for example wherein:

(i) n is an integer from about 1 to about 20;

(ii) n is an integer from about 1 to about 15;

(iii) n is an integer from about 1 to about 10; or

(iv) n is an integer from about 2 to about 12.

Numbered embodiment 301.

301. The cyclic peptide of any one of the preceding embodiments, wherein when R ^NT is a -C(O)-optionally substituted heteroalkyl, the -C(O)-optionally substituted heteroalkyl is unsubstituted or is substituted with one or more substituents independently selected from the group consisting of: -OH, -NH2, -CO2H, -CO2CH3, -NH(C=NH)NH2, =0 (i.e., two geminal hydrogens on a carbon atom of the heteroalkyl are replaced with the group =0), , or a quaternary amine of any one of the preceding embodiments, for example, -N ⁺ (CH3)3.

Numbered embodiment 302. 302. The cyclic peptide of any one of the preceding embodiments, wherein when R ^NT is a -C(O)-optionally substituted alkyl, the -C(O)-optionally substituted alkyl is unsubstituted or is substituted with one or more substituents independently selected from the group consisting of: Fluoro, - a quaternary amine of any one of the preceding embodiments, for example, -N ⁺ (CH3)3.

Numbered embodiment 303.

303. The cyclic peptide of any one of the preceding embodiments, wherein

(i) each R ^Y and R ^z is independently selected from the group consisting of: hydrogen, optionally substituted (C1-C10) alkyl and optionally substituted (C1-C25) heteroalkyl, or

(ii) R ^Y and R ^z come together with the N atom to which they are attached to form an optionally substituted (C5-7) heterocyclic ring or an optionally substituted (C7- C9) bicyclic heterocyclic ring.

Numbered embodiment 304.

304. The cyclic peptide of any one of the preceding embodiments, wherein

(i) each R ^Y and R ^z is independently selected from the group consisting of: hydrogen, optionally substituted (Ci-Cs) alkyl and optionally substituted (C1-C20) heteroalkyl, or

(ii) R ^Y and R ^z come together with the N atom to which they are attached to form an optionally substituted (Ce) heterocyclic ring or an optionally substituted (Cs) bicyclic heterocyclic ring.

Numbered embodiment 305.

305. The cyclic peptide of any one of the preceding embodiments, wherein R ^CT is selected from the group consisting of: CONH2, CO(DiFPip), CO(Morph), C0(mPEG8), CO(NHPEG3a), CO(OAZBO), CO(TFMOHPip), CON(Me)2, CON(MePEG2), C0N(mPEG2), CON(NMePip), CONH(PEG3a), CONH(PEG5a), CONHMe and CONMe2.

Numbered embodiment 306.

306. The cyclic peptide of any one of the preceding embodiments, wherein R ^CT is selected from the group consisting of: optionally substituted aminyl, optionally substituted piperidinyl, optionally substituted piperazinyl, optionally substituted morpholinyl and optionally substituted 3 -oxa- 8- azabicyclo [3.2.1] octanyl . Numbered embodiment 307.

307. The cyclic peptide of any one of the preceding embodiments, wherein R ^CT is N(R ^Y )(R ^Z ), wherein R ^Y is hydrogen and R ^z is an optionally substituted (C1-C30) heteroalkyl that comprises a quaternary amine, for example, CO(NHPEG3a), CONH(PEG3a) or CONH(PEG5a).

Numbered embodiment 308.

308. The cyclic peptide of any one of the preceding embodiments, wherein when R ^Y and/or R ^z is an optionally substituted alkyl, each optionally substituted alkyl is independently unsubstituted or is substituted with one or more substituents independently selected from the group consisting of: a quaternary amine of any one of the preceding embodiments, for example, -N ⁺ (CH3)3.

Numbered embodiment 309.

309. The cyclic peptide of any one of the preceding embodiments, wherein when R ^Y and/or R ^z is an optionally substituted heteroalkyl, each optionally substituted heteroalkyl is independently unsubstituted or is substituted with one or more substituents independently selected from the group consisting of: a quaternary amine of any one of the preceding embodiments, for example, -N ⁺ (CH3)3.

Numbered embodiment 310.

310. The cyclic peptide of any one of the preceding embodiments, wherein when R ^Y and R ^z come together with the N atom to which they are attached to form an optionally substituted heterocyclic ring, for example, optionally substituted aminyl, optionally substituted piperidinyl, optionally substituted piperazinyl and optionally substituted morpholinyl, the optionally substituted heterocyclic ring is unsubstituted or is substituted with one or more substituents independently selected from the group consisting of: Fluoro, - OH, -CF3, (C1-C3) alkyl, or a quaternary amine of any one of the preceding embodiments, for example, -N ⁺ (CH3)3.

Numbered embodiment 311.

311. The cyclic peptide of any one of the preceding embodiments, wherein when R ^Y and R ^z come together with the N atom to which they are attached to form an optionally substituted bicyclic heterocyclic ring, for example, optionally substituted 3-oxa-8- azabicyclo[3.2.1]octanyl, the optionally substituted bicyclic heterocyclic ring is unsubstituted or is substituted with one or more substituents independently selected from the group consisting of: Fluoro, -OH, -CF3, (C1-C3) alkyl, or a quaternary amine of any one of the preceding embodiments, for example, -N ⁺ (CH3)3. Numbered embodiment 312.

312. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide further comprises one or more natural or unnatural polymer(s) or a combination(s) thereof.

Numbered embodiment 313.

313. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide further comprises a natural or unnatural polymer or a combination thereof.

Numbered embodiment 314.

314. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide further comprises one or more natural or unnatural polymer or a combination thereof that is conjugated to R ^NT , when present, and/or R ^CT , when present, and/or the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ and/or Z ¹⁶ , when an amino acid residue is present at the position.

Numbered embodiment 315.

315. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide further comprises a natural or unnatural polymer or a combination thereof that is conjugated to R ^NT , when present, or R ^CT , when present, or the amino acid residues at positions Z ³ , Z ⁵ , Z ⁶ , Z ⁷ , Z ⁸ , Z ¹⁰ , Z ¹¹ , Z ¹² , Z ¹³ , Z ¹⁴ , Z ¹⁵ or Z ¹⁶ , when an amino acid residue is present at the position.

Numbered embodiment 316.

316. The cyclic peptide of any one of the preceding embodiments, wherein each natural or unnatural polymer(s) or a combination(s) thereof is/are independently one of the natural or unnatural polymer(s) or a combination(s) thereof disclosed in the description.

Numbered embodiment 317.

317. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide is an inhibitor of an interleukin-23 (IL-23) receptor.

Numbered embodiment 318.

318. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide inhibits the binding of an interleukin-23 (IL-23) to an IL-23 receptor.

Numbered embodiment 319.

319. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide inhibits an interleukin-23 (IL-23) receptor to reduce or prevent the activation of the Jak-Stat signaling molecules, Iak2, Tyk2, Statl, Stat 3, Stat 4, and/or Stat 5.

Numbered embodiment 320. 320. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide inhibits an interleukin-23 (IL-23) receptor to reduce or prevent the phosphorylation of Stat 3.

Numbered embodiment 321.

321. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a reporter assay with an IC50 value less than about 6.3 pM.

Numbered embodiment 322.

322. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a reporter assay with an IC50 value less than about 2 pM.

Numbered embodiment 323.

323. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a reporter assay with an IC50 value less than about 1 pM.

Numbered embodiment 324.

324. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a reporter assay with an IC50 value less than about 0.5 pM.

Numbered embodiment 325.

325. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a reporter assay with an IC50 value less than about 0.25 pM.

Numbered embodiment 326.

326. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a reporter assay with an IC50 value less than about 0.1 pM.

Numbered embodiment 327.

327. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a reporter assay with an IC50 value less than about 0.05 pM.

Numbered embodiment 328. 328. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a reporter assay with an IC50 value less than about 0.025 pM.

Numbered embodiment 329.

329. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a reporter assay with an IC50 value less than about 0.01 pM.

Numbered embodiment 330.

330. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in an IL-23 reporter assay with an IC50 value less than about 0.005 pM.

Numbered embodiment 331.

331. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a reporter assay with an IC50 value less than about 0.0025 pM.

Numbered embodiment 332.

332. The cyclic peptide of any one of the preceding embodiments, wherein the IL-23 reporter assay is as described in the description.

Numbered embodiment 333.

333. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a peripheral blood mononuclear cell (PBMC) pSTAT3 assay with an IC50 value less than about 0.05 nM.

Numbered embodiment 334.

334. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a peripheral blood mononuclear cell (PBMC) pSTAT3 assay with an IC50 value less than about 0.04 nM.

Numbered embodiment 335.

335. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a peripheral blood mononuclear cell (PBMC) pSTAT3 assay with an IC50 value less than about 0.03 nM.

Numbered embodiment 336.

336. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a peripheral blood mononuclear cell (PBMC) pSTAT3 assay with an IC50 value less than about 0.02 nM. Numbered embodiment 337.

337. The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide inhibits an interleukin-23 (IL-23) receptor in a peripheral blood mononuclear cell (PBMC) pSTAT3 assay with an IC50 value less than about 0.01 nM.

Numbered embodiment 338.

338. The cyclic peptide of any one of the preceding embodiments, wherein the peripheral blood mononuclear cell (PBMC) pSTAT3 assay is as described in the description.

Numbered embodiment 339.The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide exhibits an Exposed Polar Surface Area (EPSA) of less than about 275 A ² in an EPSA assay.

Numbered embodiment 34O.The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide exhibits an Exposed Polar Surface Area (EPSA) of less than about 250 A ² in an EPSA assay.

Numbered embodiment 341.The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide exhibits an Exposed Polar Surface Area (EPSA) of less than about 225 A ² in an EPSA assay.

Numbered embodiment 342.The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide exhibits an Exposed Polar Surface Area (EPSA) of less than about 200 A ² in an EPSA assay.

Numbered embodiment 343.The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide exhibits an Exposed Polar Surface Area (EPSA) of less than about 175 A ² in an EPSA assay.

Numbered embodiment 344.The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide exhibits an Exposed Polar Surface Area (EPSA) of less than about 150 A ² in an EPSA assay.

Numbered embodiment 345.The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide exhibits an Exposed Polar Surface Area (EPSA) of less than about 145 A ² in an EPSA assay.

Numbered embodiment 346.The cyclic peptide of any one of the preceding embodiments, wherein the cyclic peptide exhibits an Exposed Polar Surface Area (EPSA) of less than about 140 A ² in an EPSA assay.

Numbered embodiment 347.The cyclic peptide of any one of the preceding embodiments, wherein the Exposed Polar Surface Area (EPSA) assay is as described in the description. Numbered embodiment 348.A compound which is selected from any one of the tables 1A, IB, 1C, ID, IE and IF or pharmaceutically acceptable salts thereof or solvates thereof. Numbered embodiment 349.A pharmaceutical composition comprising the cyclic peptide or pharmaceutically acceptable salt thereof or solvate thereof of any one of the preceding embodiments, and a pharmaceutically acceptable carrier, excipient, or diluent.

Numbered embodiment 35O.The pharmaceutical composition of any one of the preceding embodiments, further comprising an enteric coating.

Numbered embodiment 351. The pharmaceutical composition of any one of the preceding embodiments, wherein the enteric coating protects and releases the pharmaceutical composition within a subject’s lower gastrointestinal system.

Numbered embodiment 352. A method for treating an Inflammatory Bowel Disease (IBD), ulcerative colitis, Crohn’s disease, Celiac disease (nontropical Sprue), enteropathy associated with seronegative arthropathies, microscopic colitis, collagenous colitis, eosinophilic gastroenteritis, colitis associated with radio- or chemo-therapy, colitis associated with disorders of innate immunity as in leukocyte adhesion deficiency- 1, chronic granulomatous disease, glycogen storage disease type lb, Hermansky-Pudlak syndrome, Chediak-Higashi syndrome, and Wiskott-Aldrich Syndrome, pouchitis resulting after proctocolectomy and ileoanal anastomosis, gastrointestinal cancer, pancreatitis, insulin-dependent diabetes mellitus, mastitis, cholecystitis, cholangitis, pericholangitis, chronic bronchitis, chronic sinusitis, asthma, psoriasis, psoriatic arthritis, or graft versus host disease in a subject, comprising providing to the subject an effective amount of the cyclic peptide or pharmaceutically acceptable salt thereof or solvate thereof of any one of the preceding embodiments, or the pharmaceutical composition of any one of the preceding embodiments. Numbered embodiment 353. The method of any one of the preceding embodiments, wherein the cyclic peptide or pharmaceutically acceptable salt thereof or solvate thereof or the pharmaceutical composition is provided to the subject by an oral, parenteral, intravenous, peritoneal, intradermal, subcutaneous, intramuscular, intrathecal, inhalation, vaporization, nebulization, sublingual, buccal, parenteral, rectal, intraocular, inhalation, topically, vaginal, or topical route of administration.

Numbered embodiment 354. The method of any one of the preceding embodiments for treating Inflammatory Bowel Disease (IBD), ulcerative colitis, or Crohn’s disease, wherein the cyclic peptide or pharmaceutically acceptable salt thereof or solvate thereof or the pharmaceutical composition is provided to the subject orally. Numbered embodiment 355. The method of any one of the preceding embodiments for treating psoriasis, wherein the cyclic peptide or pharmaceutically acceptable salt thereof or solvate thereof or the pharmaceutical composition is provided to the subject orally, topically, parenterally, intravenously, subcutaneously, peritonealy, or intravenously.

Numbered embodiment 356. The cyclic peptide of any one of the preceding embodiments, or the pharmaceutical composition of any one of the preceding embodiments for use in the treatment of an Inflammatory Bowel Disease (IBD), ulcerative colitis, Crohn’s disease, Celiac disease (non tropical Sprue), enteropathy associated with seronegative arthropathies, microscopic colitis, collagenous colitis, eosinophilic gastroenteritis, colitis associated with radio- or chemo-therapy, colitis associated with disorders of innate immunity as in leukocyte adhesion deficiency- 1, chronic granulomatous disease, glycogen storage disease type lb, Hermansky-Pudlak syndrome, Chediak- Higashi syndrome, and Wiskott-Aldrich Syndrome, pouchitis resulting after proctocolectomy and ileoanal anastomosis, gastrointestinal cancer, pancreatitis, insulin-dependent diabetes mellitus, mastitis, cholecystitis, cholangitis, pericholangitis, chronic bronchitis, chronic sinusitis, asthma, psoriasis, psoriatic arthritis, or graft versus host disease in a subject, comprising providing to the subject an effective amount of the cyclic peptide or pharmaceutically acceptable salt thereof or solvate thereof of any one of the preceding embodiments, or the pharmaceutical composition of any one of the preceding embodiments.

Numbered embodiment 357. The cyclic peptide for use according to any one of the preceding embodiments or the pharmaceutical composition for use according to any one of the preceding embodiments, wherein the cyclic peptide or pharmaceutically acceptable salt thereof or solvate thereof or the pharmaceutical composition is provided to the subject by an oral, parenteral, intravenous, peritoneal, intradermal, subcutaneous, intramuscular, intrathecal, inhalation, vaporization, nebulization, sublingual, buccal, parenteral, rectal, intraocular, inhalation, topically, vaginal, or topical route of administration.

Numbered embodiment 358. The cyclic peptide for use according to any one of the preceding embodiments or the pharmaceutical composition for use according to any one of the preceding embodiments, for use in the treatment of Inflammatory Bowel Disease (IBD), ulcerative colitis, or Crohn’s disease, wherein the cyclic peptide or pharmaceutically acceptable salt thereof or solvate thereof or the pharmaceutical composition is provided to the subject orally.

Numbered embodiment 359. The cyclic peptide or the pharmaceutical composition for use according to any one of the preceding embodiments, for use in the treatment of psoriasis, wherein the cyclic peptide or pharmaceutically acceptable salt thereof or solvate thereof or the pharmaceutical composition is provided to the subject orally, topically, parenterally, intravenously, subcutaneously, peritonealy, or intravenously.

Numbered embodiment 360. The cyclic peptide of any one of the preceding embodiments, or the pharmaceutical composition of any one of the preceding embodiments for use as a medicament.

Numbered embodiment 361. The use of the cyclic peptide of any one of the preceding embodiments, or the pharmaceutical composition of any one of the preceding embodiments for the manufacture of a medicament for treating a disease.

Numbered embodiment 362. The use of the cyclic peptide of any one of the preceding embodiments, or the pharmaceutical composition of any one of the preceding embodiments for the manufacture of a medicament for treating a disease disclosed in any one of the preceding embodiments.