Carboxylic acids

Field of the invention

The present invention is related to carboxylic acids of formula (I), in particular for the treatment and/or prevention of obesity and/or metabolic disorders mediated by insulin resistance or hyperglycemia, comprising diabetes type I and/or II, inadequate glucose tolerance, insulin resistance, hyperlipidemia, hypertriglyceridemia, hypercholesterolemia, polycystic ovary syndrome (PCOS). The compounds of this invention are particularly useful in the treatment of type II diabetes, obesity or the regulation of appetite. Specifically, the present invention is related to carboxylic acids for the modulation, notably the inhibition of the activity of PTPs, in particular of PTPlB.

Background of the invention

The prevalence of insulin resistance in glucose intolerant subjects is well known. Reaven et al (American Journal of Medicine, 60, 80 (1976)) used a continuous infusion of glucose and insulin (insulin/glucose clamp technique) and oral glucose tolerance tests to demonstrate that insulin resistance exists in a diverse group of non-obese, non-ketotic subjects. These subjects ranged from borderline glucose tolerant to overt, fasting hyperglycemia. The diabetic groups in these studies included both insulin dependent (IDDM) and non-insulin dependent (NIDDM) subjects.

Coincident with sustained insulin resistance is the more easily determined hyper- insulinemia, which may be measured by accurate determination of circulating plasma insulin concentration in the plasma of subjects. Hyperinsulinemia may be present as a result of insulin resistance, such as is in obese and/or diabetic (NIDDM) subjects and/or glucose intolerant subjects, or in IDDM subjects, as a consequence of over injection of insulin compared with normal physiological release of the hormone by the endocrine pancreas. The association ofhyperinsulinemia and insulin resistance with obesity and with ischemic diseases of the large blood vessels (e.g. atherosclerosis) has been well established by numerous experimental, clinical and epidemiological studies (Stout, Metabolism, 34, 7 (1985)). Statistically significant plasma insulin elevations at 1 and 2 hours after oral glucose load correlate with an increased risk of coronary heart disease.

Since most of these studies actually excluded diabetic subjects, data relating the risk of atherosclerotic diseases to the diabetic condition are not as numerous, but point in the same direction as for non-diabetic subjects. However, ttie incidence of atherosclerotic diseases in morbidity and mortality statistics in the diabetic population exceeds that of the nondiabetic population (Pyorala et al; Jarrett Diabetes/Metabolism Reviews, 5, 547 (1989)).

The association of hyperinsulinemia and insulin resistance with Polycystic Ovary Syndrome (PCOS) is also well acknowledged (Diamanti-Kandarakis et al.; Therapeutic effects of metformin on insulin resistance and hyperandrogenism in polycystic ovary syndrome; European Journal of Endocrinology 138, 269-274 (1998), Andrea Dunaif; Insulin Resistance and the Polycystic Ovary Syndrome : Mechanism and Implications for Pathogenesis; Endocrine Reviews 18(6), 774-800 (1997)).

The independent risk factors obesity and hypertension for atherosclerotic diseases are also associated with insulin resistance. Using a combination of insulin/glucose clamps, tracer glucose infusion and indirect calorimetry, it was demonstrated that the insulin resistance of essential hypertension is located in peripheral tissiies (principally muscle) and correlates directly witti the severity of hypertension (DeFronzo and Ferrannini, Diabetes Care, 14, 173 (1991)). In hypertension of obese people, insulin resistance generates hyper¬ insulinemia, which is recruited as a mechanism to> limit further weight gain via thermogenesis, but insulin also increases renal sodium re-absorption and stimulates the sympathetic nervous system in kidneys, heart, and vasculature, creating hypertension. It is assumed that insulin resistance is usually the result of a defect in the insulin receptor signaling system, at a site post binding of insulin to the receptor. Accumulated scientific evidence demonstrating insulin resistance in the major tissues which respond to insulin (muscle, liver, adipose), strongly suggests that a defect in insulin signal transduction resides at an early step in this cascade, specifically at the insulin receptor kinase activity, which appears to be diminished (Mounib Elchebly, Alan Cheng, Mich.el L. Tremblay; Modulation of insulin signaling by protein tyrosine phosphatases; J. MoI. Med. 78, 473-482 (2000)).

Protein-tyrosine phosphatases (PTPs) play an important role in -the regulation of phosphorylation of proteins and represent the counterparts of kinases. Among classical PTPs, there are two types : (i) non-receptor or intracellular PTP s and (ii) receptor-like PTPs. Most intracellular PTPs contain one catalytic domain only, whereas most receptor- like enzymes contain two. The catalytic domain consists of aboxit 250 amino acids (Niels Peter Hundahl Moller et al. Protein tyrosine phosphatases (PTPs) as drug targets: Inhibitors of PTP-IB for the treatment of diabetes; Current Opinion in Dr~ug Discovery & Development 3(5), 527-540 (2000)).

The interaction of insulin with its receptor leads to phosphorylation of certain tyrosine molecules within the receptor protein, thus activating the receptor kinase.. PTPs dephosphorylate the activated insulin receptor, attenuating the tyrosine kinase activity. PTPs can also modulate post-receptor signaling by catalyzing tfcie dephosphorylation of cellular substrates of the insulin receptor kinase. The enzymes that appear most likely to closely associate with the insulin receptor and therefore, most likely to regulate the insulin receptor kinase activity, include PTPlB, LAR, PTP-alpha and SH-PTP2 (Lori Klaman et al.; Increased Energy Expenditure, Decreased Adiposity, and Tissue-specific Insulin Sensitivity in Protein-Tyrosine Phosphatase IB-Deficient Mice; Molecular and Cellular Biology, 5479-5489 (2000)).

PTPlB is a member of the PTP family. This 50 kDa protein contains a conserved phosphatase domain at residues 30-278 and is localized to the cytoplasmic face of the endoplasmic reticulum by its C-teπninal 35 residues. Its interactions with other proteins are mediated by proline-rich regions and SH2 compatible sequence. PTPlB is believed to act as a negative regulator in insulin signaling.

McGuire et al. {Diabetes, 40, 939 (1991)) demonstrated that non-diabetic glucose intolerant subjects possessed significantly elevated levels of PTP activity in irxnscle tissue vs. normal subjects, and that insulin infusion failed to suppress PTP activity as it did in insulin sensitive subjects.

Meyerovitch et al. (J. Clinical Invest., 84, 976 (1989)) observed significantly increased PTP activity in the livers of two rodent modeis of IDDM, the genetically diabetic BB rat, and the STZ-induced diabetic rat. Sredy et al. (Metabolism, 44, 1074, (1 995)) observed similar increased PTP activity in the livers of obese, diabetic ob/ob mice, which represent a typical rodent model of NIDDM.

Zhang et al (Curr. Opin. Chem. Biol, 5(4), 416-23 (2001)) found thtat PTPs are also implicated in a wide variety of other disorders, including cancer. Bjorge, XD. et al. (J. Biol. Chem., 275(52), 41439-46 (2000)) indicates that PTP IB is the primary protein-tyrosine phosphatase capable of dephosphorylating c-Src in several human V>reast cancer cell lines and suggests a regulatory role for PTPlB in the control of c-Src kinase activity.

Pathre et al (J. Neurosci. Res., 63(2), 143-150 (2001)) describes that; PTPlB regulates neurite extension mediated by cell-cell and cell-matrix adhesion molecules. Further, Shock L. P et al. (MoI. Brain. Res., 28(1), 110-16 (1995)) demonstrates that a distinct overlapping set of PTPs is expressed in the developing brain and retinal Mueller glia, including 2 novel PTPs that may participate in neural cell communication.

The insulin receptor (IR) is a prototypical tyrosine kinase receptor whose ligand binding and dimerization results in auto-phosphorylation on multiple tyrosines. This is followed by the recruitment and phosphorylation of IRS 1-4 (depending on the tissue) and PI3K. Although vanadium-containing compounds have been known since the 19th century to alleviate diabetes, it was understood only recently that these inhibitors stimulate the insulin signaling pathway by blocking PTP action. Evidence for the involvement of the IR (insulin receptor) and IRS-I in this phenotype was that both proteins show increased tyrosine phosphorylation in the PTPlB-mutated mice. The available data strongly suggest that in particular PTPlB is a promising target for the development of drugs to treat diabetes and obesity (Brian P. Kennedy and Chidambaram Ramachandran; Protein Tyrosine Phosphatase-1B in Diabetes; Biochemical Pharmacology, Vol. 60, 877-883, (2000)).

A further protein involved in obesity is Leptin. Leptin is a peptide hormone that plays a central role in feeding and adiposity (Leptin, Λnnu. Rev. Physiol. 62 p.413-437 (2000) by Ahima R. S. et al.). Recently, it has been suggested that PTP IB negatively regulates leptin signaling, and provides one mechanism by which it may regulate obesity. Further, it is known that pharmacological inhibitors of PTPlB hold promise as an alternative or a supplement to leptin in the treatment of obesity due to leptin resistance (Developmental Cell, vol.2, p.497-503 (2002)).

In numerous patent application small molecules have been proposed as inhibitors of PTPs.

Substituted aryl and heteroaryl derivatives of benzamidines and their use as anti¬ thrombotics are described in WO 00/35859.

Further background art related to the compounds of the present invention are the following

references :

WO 00/15213 claiming sulfonamides in the treatment of congestive heart failure.

WO 98/16503 claims sulfonamide MMP inhibitors (anti-inflammatory activity).

WO 03/032999 relates to amide compounds which are said to be MMP- 13 inhibitors, useful in

the treatment of cancer and arthritis. Summary of the invention

The present invention relates to carboxylic acids of formula (I).

Such compounds are suitable for the treatment and/or prevention of metabolic disorders mediated by insulin resistance or hyperglycemia, comprising diabetes type I and/or II, inadequate glucose tolerance, insulin resistance, hyperlipidemia, hypertriglyceridemia, hypercholesterolemia, obesity, polycystic ovary syndrome (PCOS). In one embodiment, compounds of this invention are inhibitors of PTPs.

Detailed description of the invention

The following paragraphs provide definitions of the various chemical moieties that make up the compounds according to the invention and are intended to apply uniformly through¬ out the specification and claims unless an otherwise expressly set out definition provides a broader definition.

"PTPs" are protein tyrosine phosphatases or dual specific phosphatases and include for instance PTPlB, TC-PTP, PTP-β, PTP-Hl, DEP-I, LAR, SHP-I, SHP-2,. GLEPP-I, PTP- μ, VHR, hVH5, LMW-PTP, PTEN, PTP-kappa, Pac-1. "C1-Cβ -alkyl" refers to alkyl groups having 1 to 6 carbon atoms. This term is exemplified by groups such as methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, n-pentyl, n-hexyl and the like.

"Aryl" refers to an unsaturated aromatic carbocyclic group of from 6 to 14 carbon atoms having a single ring (e.g., phenyl) or multiple condensed rings (e.g., naphthyl). Preferred aryl include phenyl, naphthyl, phenantrenyl and the like.

"C1-Cβ-alkyl aryl" refers to C1-C6-alkyl groups having an aryl substituent, including benzyl, phenethyl and the like.

"Heteroaryl" refers to a monocyclic heteroaromatic, or a bicyclic or a tricyclic fused-ring heteroaromatic group. Particular examples of heteroaromatic groups include optionally substituted pyridyl, pyrrolyl, furyl, thienyl, imidazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyrazolyl, 1,2,3-triazolyl, 1,2,4-triazolyl, 1,2,3-oxadiazolyl, 1,2,4-oxadia- zolyl, 1,2,5-oxadiazolyl, l,3,4-oxadiazolyl,l,3,4-triazinyl, 1,2,3-triazinyl, benzofuryl, [2,3- dihydro]benzofuryl, isobenzofuryl, benzothienyl, benzotriazolyl, isobenzothienyl, indolyl, isoindolyl, 3H-indolyl, benzimidazolyl, imidazo[l,2-a]pyridyl, benzotbiazolyL benzoxa- zolyl, quinolizinyl, quinazolinyl, pthalazinyl, quinoxalinyl, cinnolinyl, napthyridinyl, pyrido[3,4-b]pyridyl, pyrido[3,2-b]pyridyl, pyrido[4,3-b]pyridyl, quinolyl, isoquinolyl, tetrazolyl, 5,6,7,8-tetrahydroquinolyl, 5,6,7,8-tetrahydroisoquinolyl, purinyl, pteridinyl, carbazolyl, xanthenyl or benzoquinolyl.

"C1-Cδ-alkyl heteroaryl" refers to C1-Cβ-alkyl groups having a heteroaryl substituent, including 2-furylmethyl, 2-thienylmethyl, 2-(lH-indol-3-yl)ethyl and the like.

"C2-C6-alkenyl" refers to alkenyl groups preferably having from 2 to 6 carbon atoms and having at least 1 or 2 sites of alkenyl unsaturation. Preferable alkenyl groups include ethenyl (-CH=CH2), n-2-propenyl (allyl, -CH2CH=CH2) and the like. "C∑-Cδ-alkenyl aiyl" refers to C2-C6-alkenyl groups having an aryl substituent, including 2- phenylvinyl and the like.

"C2-Cβ-alkenyl heteroaryl" refers to C2-C6-alkenyl groups having a heteroaryl substituent, including 2-(3-pyridinyl)vinyl and the like.

"C2-C6-alkynyl" refers to alkynyl groups preferably having from 2 to 6 carbon atoms and having at least 1-2 sites of alkynyl unsaturation, preferred alkynyl groups include ethynyl (-G≡CH), propargyl (-CH2OCH), and the like.

"C2-C6-alkynyl aryl" refers to C2-C6-alkynyl groups having an aryl substituent, including phenylethynyl and the like.

"C2-C6-alkynyl heteroaryl" refers to C2-C6-alkynyl groups having a heteroaryl substituent, including 2-thienylethynyl and the like.

"C3-C8-cycloalkyl" refers to a saturated carbocyclic group of from 3 to' 8 carbon atoms having a single ring (e.g., cyclohexyl) or multiple condensed rings (e.g., norbornyl). Preferred cycloalkyl include cyclopentyl, cyclohexyl, norbornyl and the like.

"C1-Cg-alkyl cycloalkyl" refers to C1-Cβ-alkyl groups having a cycloalkyl substituent, including cyclohexylmethyl, cyclopentylpropyl, and the like.

"heterocycloalkyl" refers to a C3-C8-cycloalkyl group according to the definition above, in which 1 to 3 carbon atoms are replaced by hetero atoms chosen from the group consisting of O, S, NR3 R being defined as hydrogen or Cj-Cg alkyl. Preferred heterocycloalkyl include pyrrolidine, piperidine, piperazine, 1-methylpiperazine, morpholine, and the like.

"C1-Cβ-alkyl heterocycloalkyl" refers to Ci-Ce-alkyl groups having a heterocycloalkyl substituent, including 2-(l-pyrrolidinyl)ethyl, 4-morpholinylmethyl, (l-methyl-4- piperidinyl)rnethyl and the like. "Carboxylic acid" refers to the group -C(O)OH.

"C1-Cβ-alkyl carboxy" refers to C1-Ce-alkyl groups having a carboxy substituent, including 2-carboxyethyl and the like.

"Acyl" refers to the group -C(O)R where R includes H3 "Q-Ce-alkyl", "C2-C6-alkenyl", "C2-C6-alkynyl", "C3-C8-cycloalkyl", "heterocycloalkyl", "aryl", "heteroaryl", "C1-C6-alkyl aryl" or "CrC6-alkyl heteroaryl", "C2-C6-alkenyl aryl", "C2-C6-alkenyl heteroaryl", "C2- C6-alkynyl aryl", "Ca-Ce-alkynylheteroaryl", "d-C6-alkyl cycloalkyl", "C1-C6-alkyl heterocycloalkyl".

"C1-Cβ-alkyl acyl" refers to C1-Cβ-alkyl groups having an acyl substituent, including 2- acetylethyl and the like.

"Aryl acyl" refers to aryl groups having an acyl substituent, including 2-acetylphenyl and the like.

"Heteroaryl acyl" refers to hetereoaryl groups having an acyl substituent, including 2- acetylpyridyl and the like.

"C3-C8-(hetero)cycloalkyl acyl" refers to 3 to 8 membered cycloalkyl or heterocycloalk groups having an acyl substituent.

"Acyloxy" refers to the group -OC(O)R where R includes H, "C1-C6-alkyl", "C2-C6- alkenyl", "C2-C6-alkynyl", "C3-C8-cycloalkyr, "heterocycloaUcyl", "aryl", "heteroaryl", "C1-Ce-alkyl aryl" or "C1-C6-alkyl heteroaryl", "C2-C6-alkenyl aryl", "C2-C6-alkenyl heteroaryl", "C2-C6-alkynyl aryl", "C1-C6-alkyl cycloalkyl", "C1-Cβ-alkyl heterocycloalkyl".

"C1-Cδ-alkyl acyloxy" refers to Cj-Cβ-alkyl groups having an acyloxy substituent, including 2-(acetyloxy)ethyl and the like. "Alkoxy" refers to the group -O-R where R includes "C1-Cg-alkyl", "C2-C6-alkenyl", "C2- Ce-alkynyl", "C3-C8-cycloalkyl", "heterocycloalkyl", "aryl", "heteroaryl", "C1-C6-alkyl aryl" or "C1-C6-alkyl heteroaryl", "C2-C6-alkenyl aryl", "C2-C6-alkenyl heteroaryl", "C2- Ce-alkynyl aryl", "C2-C6-alkynylheteroaryr, "C1-C6-aIlcyl cycloalkyl", "C1-Ce-alkyl heterocycloalkyl".

"C1-Cό-alkyl alkoxy" refers to C1-C6-alkyl groups having an alkoxy substituent, including 2-ethoxyethyl and the Uke.

"Alkoxycarbonyl" refers to the group -C(O)OR where R includes "C1-C6-alkyl", "C2-C6- alkenyl", "C2-C6-allcynyr', "C3-C8-cycloalkyl", "heterocycloalkyl", "aryl", "heteroaryl", "C rC6-alkyl aryl" or "d-C6-alkyl heteroaryl", "C2-C6-alkenyl aryl", "C2-C6-alkenyl heteroaryl", "C2-C6-alkynyl aryl", "C2-C6-alkynylheteroaryl", "C1-C6-alkyl cycloalkyl", "C1-Ce-alkyl heterocycloalkyl".

"C1-Cβ-alkyl alkoxycarbonyl" refers to C1-Cδ-alkyl groups having an alkoxycarbonyl substituent, including 2-(benzyloxycarbonyl)ethyl and the like.

"Aminocarbonyl" refers to the group -C(O)NRR' where each R, R' includes independently hydrogen, "C,-C6-alkyl"5 "C2-C6-alkenyl", "C2-C6-alkynyl"5 "C3-C8-cycloaIkyl", "heterocycloalkyl", "aryl", "heteroaryl", "C,-C6-alkyl aryl" or "C,-C6-alkyl heteroaryl", "C2-C6-alkenyl aryl", "C2-C6-alkenyl heteroaryl", "C2-C6-alkynyl aryl", "C2-C6- alkynylheteroaryl", "C1-C6-alkyl cycloalkyl", "C1-Ce-alkyl heterocycloalkyl".

"C1-C6-alkyl aminocarbonyl" refers to C1-C6-alkyl groups having an aminocarbonyl substituent, including 2-(dimethylaminocarbonyl)ethyl and the like.

"Acylamino" refers to the group -NRC(O)R' where each R, R' is independently hydrogen, "C1-C6-alkyl", "C2-C6-alkenyl", "C2-C6-alkynyl", "C3-C8-cycloalkyl", "heterocycloalkyl", "aryl", "heteroaryl", "C1-Ce-alkyl aryl" or "C1-C6-alkyl heteroaryl", "C2-C6-alkenyl aryl", "C2-C6-alkenyl heteroaryl", "C2-C6-alkynyl aryl", "C2-C6-alkynylheteroaryr, "C1-Cβ-alkyl cycloalkyl", "Ci-Q-alkyl heterocycloalkyl".

"C1-Cβ-alkyl acylamino" refers to C1-Cβ-alkyl groups having an acylamino substituent, including 2-(propionylarnino)ethyl and the like.

"Ureido" refers to the group -NRC(O)NR'R" where each R, R', R" is independently hydrogen, "CrC6-alkyl", "C2-C6-alkenyl", "C2-C6-alkynyl", "C3-C8-cycloalkyl", "heterocycloalkyl", "aryl", "heteroaryl", "d-Ce-alkyl aryl" or "d-C6-alkyl heteroaryl", "C2-C6-alkenyl aryl", "C2-C6-alkenyl heteroaryl", "C2-C6-allcynyl aryl", "C2-C6- alkynylheteroaryl", "C1-Cδ-alkyl cycloalkyl", "Q-Ce-alkyl heterocycloalkyl", and where R' and R", together with the nitrogen atom to which they are attached, can optionally form a 3-8-membered heterocycloalkyl ring.

"C1-Cg-alkyl ureido" refers to C1-C6-alkyl groups having an ureido substituent, including 2- (iV-methylureido)ethyl and the like.

"Carbamate" refers to the group -NRC(O)OR' where each R, R' is independently hydrogen, "C1-C6-alkyl", "C2-C6-alkenyl", "C2-C6-alkynyl", "C3-C8-cycloalkyl", "heterocycloalkyl", "aryl", "heteroaryl", "CrC6-alkyl aryl" or "CrC6-alkyl heteroaryl", "C2-C6-alkenyl aryl", "C2-C6-alkenyl heteroaryl", "C2-C6-alkynyl aryl", "C2-C6- alkynylheteroaryl", "C1-C6-alkyl cycloalkyl", "C1-C6-alkyl heterocycloalkyl".

"Amino" refers to the group -NRR' where each R, R' is independently hydrogen, "C1-C6- alkyl", "C2-C6-alkenyl", "C2-C6-allcynyl", "Cs-Q-cycloalkyl", "heterocycloalkyl", "aryl", "heteroaryl", "C1-C6-alkyl aryl" or "C1-C6-alkyl heteroaryl", "C2-C6-alkenyl aryl", "C2-C6- alkenyl heteroaryl", "C2-C6-alkynyl aryl", "C2-C6-alkynylheteroaryl", "C1-C6-alkyl cycloalkyl", "C1-Cβ-alkyl heterocycloalkyl", and where R and R', together with the nitrogen atom to which they are attached, can optionally form a 3-8-membered hetero- cycloalkyl ring. "C1-Cβ-alkyl amino" refers to Cj-Cβ-alkyl groups having an amino substituent, including 2- (l-pyrrolidinyl)efhyl and the like.

"Ammonium" refers to a positively charged group -N+RR5R", where each R, R',R" is independently, "C1-Cg-alkyl", "C2-C6-alkenyl", "C2-C6-alkynyl", "C3-C8-cycloalkyl", "heterocycloalkyl", "C,-Ce-alkyl aryl" or "Q-Ce-alkyl heteroaryl", "C2-C6-alkenyl aryl", "C2-C6-alkenyl heteroaryl", "C2-C6-alkynyl aryl", "Ca-Ce-alkynylheteroaryl",' "Q-Q-alkyl cycloalkyl", "C1-Cβ-alkyl heterocycloalkyl", and where R and R', together with the nitrogen atom to which they are attached, can optionally form a 3-8-membered heterocycloalkyl ring.

"C1-Cfi-alkyl ammonium" refers to C1-Cβ-alkyl groups having an ammonium substituent, including 2-(l-pyrrolidinyl)ethyl and the like.

"Halogen" refers to fluoro, chloro, bromo and iodo atoms.

"Sulfonyloxy" refers to a group -OSO2-R wherein R is selected from H, "C1-Ce-alkyl", "Cj-Cβ-alkyl" substituted with halogens, e.g., an -OSO2-CF3 group, "C2-C6-alkenyl", "C2- C6-alkynyi", "C3-C8-cycloalkyl", "heterocycloalkyl", "aryl", "heteroaryl", "C1-C6-alkyl aryl" or "CrC6-alkyl heteroaryl", "C2-C6-alkenyl aryl", "C2-C6-alkenyl heteroaryl", "C2- Ce-allcynyl aryl", "C2-C6-alkynylheteroaryl", "C1-C6-alkyl cycloalkyl", "C1-C6-alkyl heterocycloalkyl".

"C1-Cβ-alkyl sulfonyloxy" refers to C1-Cβ-alkyl groups having a sulfonyloxy substituent, including 2-(methylsulfonyloxy)ethyl and the like.

"Sulfonyl" refers to group "-SO2-R" wherein R is selected from H, "aryl", "heteroaryl", "C1-Ce-alkyl", "C1-C6-alkyl" substituted with halogens, e.g., an -SO2-CF3 group, "C2-C6- alkenyl", "C2-C6-alkynyl", "CrCg-cycloalkyl", "heterocycloalkyl", "aryl", "heteroaryl", "d-Cδ-alkyl aryl" or "C1-C6-alkyl heteroaryl", "C2-C6-alkenyl aryl", "C2-C6-alkenyl heteroaryl", "C2-C6-alkynyl aryl", "C2-C6-alkynylheteroaryl'\ "C1-C6-alkyl cycloalkyl", "C1-Ce-alkyl heterocycloalkyl".

"C1-Cβ-alkyl sulfonyl" refers to C1-Cβ-alkyl groups having a sulfonyl substituent, including 2-(methylsulfonyl)ethyl and the like.

"Sulfmyl" refers to a group "-S(O)-R" wherein R is selected from H, "C1-C6-allcyl", "C1- Ce-alkyl" substituted with halogens, e.g., an -SO-CF3 group, "C2-C6-alkenyl", "C2-C6- alkynyl", "C3-C8-cycloalkyl", "heterocycloalkyl", "aryl", "heteroaryl", "C1-Ce-alkyl aryl" or "C1-C6-alkyl heteroaryl", "C2-C6-alkenyl aryl", "C2-C6-alkenyl heteroaryl", "C2-C6- alkynyl aryl", "C2-C6-alkynylheteroaryl", "C1-C6-aUcyl cycloalkyl", "C1-C6-alkyl heterocycloalkyl".

"C1-C6-alkyl sulfinyl" refers to C1-Cg-alkyl groups having a sulfinyl substituent, including 2-(methylsulfinyl)ethyl and the like.

"Sulfanyl" refers to groups -S-R where R includes H, "C1-Q-alkyl", "Q-Cs-alkyl" optionally substituted with halogens., e.g a -S-CF3 group, "Qj-Ce-alkenyl", "C2-C6- allcynyl", "C3-C8-cycloalkyl", "heterocycloalkyl", "aryl", "heteroaryl", "C1-C6-alkyl aryl" or "CrCe-alkyl heteroaryl", "C2-C6-alkenyl aryl", "C2-C6-alkenyl heteroaryl", "C2-C6- alkynyl aryl", "C2-C6-alkynylheteroaryl", "C1-C6-alkyl cycloalkyl", "C1-C6-alkyl heterocycloalkyl". Preferred sulfanyl groups include methylsulfanyl, ethylsulfanyl, and the Hke.

"C1-C6-alkyl sulfanyl" refers to C1-Cβ-alkyl groups having a sulfanyl substituent, including 2-(etiiylsulfanyl)ethyl and the like.

"Sulfonylamino" refers to a group -NRSO2-R' where each R, R' includes independently hydrogen, "C1-C6-alkyl", "C2-C6-alkenyl", "C2-C6-alkynyl", "Cs-Cs-cycloalkyl", . "heterocycloalkyl", "aryl", "heteroaryl", "C1-C6-allcyl aryl" or "d-Ce-alkyl heteroaryl", "C2-C6-alkenyl aiyl", "C2-C6-alkenyl heteroaryl", "C2-C6-alkynyl aryl", "C2-C6- alkynylheteroaryl", "C1-Oalkyl cycloalkyl", "C1-Ce-alkyl heterocycloalkyl".

"C1-Cβ-alkyl sulfonylamino" refers to Q-Cg-alkyl groups having a sulfonylamino substituent, including 2-(emylsulfonylamino)ethyl and the like.

"Aminosulfonyl" refers to a group -SO2-NRR' where each R, R' includes independently hydrogen, "Q-Ce-alkyl", "C2-C6-alkenyl", "C2-C6-alkynyl", "C3-C8-cycloalkyl", "heterocycloalkyl", "aryl", "heteroaryl", "C1-C6-alkyl aryl" or "Cj -C6-alkyl heteroaryl", "C2-C6-alkenyl aryl", "C2-C6-alkenyl heteroaryl", "C2-C6-alkynyl aryl", "C2-C6- alkynylheteroaryl", "C1-C6-alkyl cycloalkyl", "C1-C6-alkyl heterocycloalkyl".

"C1-C6-alkyl aminosulfonyl" refers to C1-Ce-alkyl groups having an aminosulfonyl . substituent, including 2-(cyclohexylaminosulfonyl)ethyl and the like.

"Substituted or unsubstituted" : Unless otherwise constrained by the definition of the indi¬ vidual substituent, the above set out groups, like "alkyl", "alkenyl", "alkynyl", "aryl" and "heteroaryl" etc. groups can optionally be substituted with from 1 to 5 substituents selected from the group consisting of "Q-Cβ-alkyl", "C2-C6-alkenyl", "C2-C6-alkynyl", "cycloalkyl", "heterocycloalkyl", "C1-C6-alkyl aryl", "C,-C6-alkyl heteroaryl", "C1-Qr alkyl cycloalkyl", "C1-C6-alkyl heterocycloalkyl", "amino", "ammonium", "acyl", "acyloxy", "acylamino", "aminocarbonyl", "alkoxycarbonyl", "ureido", "carbamate", "aryl", "heteroaryl", "sulfinyl", "sulfonyl", "alkoxy", "sulfanyl", "halogen", "carboxylic acid", trihalomethyl, cyano, hydroxy, mercapto, nitro, and the like. Alternatively, said substitution could also comprise situations where neighbouring substituents have undergone ring closure, notably when vicinal functional substituents are involved, thus forming, e.g., lactams, lactons, cyclic anhydrides, but also acetals, thioacetals, aminals formed by ring closure for instance in an effort to obtain a protective group.

"Pharmaceutically acceptable salts or complexes" refers to salts or complexes of the below- specified compounds of formula (I). Examples of such salts include, but are not restricted, to base addition salts formed by reaction of compounds of formula (I) with organic or inorganic bases such as hydroxide, carbonate or bicarbonate of a metal cation such as those selected in the group consisting of alkali metals (sodium, potassium or lithium), alkaline earth metals (e.g. calcium or magnesium), ammonia, or with an organic primary, secondary or tertiary alkyl amine. Amine salts derived from methylamine, dirnethylamine, trimethylamine, ethylamine, diethylamine, triethylamine, morpholine, N-Me-D-glucamine, N,N'-bis(phenyhnethyl)-l,2-ethanediamine, tromethamine, ethanolamine, diethanolamine, ethylenediamine, N-methyhnorpholine, procaine, piperidine, piperazine, argiαine, choline, lysine and the like are contemplated being within the scope of the instant invention.

Also comprised are salts which are formed from to acid addition salts formed with inorganic acids (e.g. hydrochloric acid, hydrobromic acid, sulfuric acid, phosphoric acid, nitric acid, and the like), as well as salts formed with organic acids such as acetic acid, oxalic acid, tartric acid, citric acid, succinic acid, malic acid, fumaric acid, maleic acid, ascorbic acid, benzoic acid, tannic acid, palmitic acid, alginic acid, polyghαtamic acid, naphthalene sulfonic acid, naphthalene disulfonic acid, and poly-galacturonic acid.

"Pharmaceutically active derivative" refers to any compound that upon administration to the recipient, is capable of providing directly or indirectly, the activity disclosed herein. The term "indirectly" also encompasses prodrugs which may be converted to the active form of the drug via endogenous enzymes or metabolism. Said prodrug is comprised of the active drug compound itself and a chemical masking group. Such masking, group may be an ester moiety (e.g. obtained by masking a carboxylic acid or an hydroxy moiety of the compounds of formula (I)).

"Enantiomeric excess" (ee) refers to the products that are obtained by an asymmetric syn¬ thesis, Le. a synthesis involving non-racemic starting materials and/or reagents or a syn- thesis comprising at least one enantioselective step, whereby a surplus of one enantiomer in the order of at least about 52% ee is yielded. Said formula also comprises its tautomers, its geometrical isomers, its optically active forms as enantiorners, diastereoisomers and its racemate forms, as well as pharmaceutically acceptable salts trxereof. Preferred pharmaceutically acceptable salts of the formula (I), are base addition salts formed by reaction of compounds of formula (I) with pharmaceutically acceptable bases like N-methyl-D-glucamine, tromethamine, sodium, potassium or calcium salts of carbonates, bicarbonates or hydroxides.

The carboxylic acids according to the present invention are those of formula (I):

Formula (I) comprises also the geometrical isomers, the optically active forms, including enantiomers, diastereomers and its racemate forms, as well as pharmaceutically acceptable salts and pharmaceutically active derivatives thereof.

The substiruents A., B, D & R1 within formula (I) are defined as follows :

A is selected from the group consisting of substituted or unsubstituted Q-Cβ-alkyl, substituted or unsυbstituted C2-C6~alkenyl, substituted or unsubstituted Ca-Cβ-alkynyl, substituted or unsubstituted C1-Cβ-alkyl amine, substituted or unsubstituted CpCe-alkyl alkoxy, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, saturated or unsaturated 3-8-membered substituted or unsubstituted cycloalkyl, 3-8-membere.d substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted C1-Cβ-alkyl aryl, substituted orunsxibstituted C1-Ce-alkyl heteroaryl, substituted or unsubstituted C2-C6- alkenyl aryl, substituted or unsubstituted C2-C6-alkenyl heteroaryl, substituted or unsubstituted C2-C6-alkynyl aiyl, substituted or unsubstituted Ca-Ce-alkynyl heteroaryl, substituted or unsubstituted C1-Ce-alkyl cycloalkyl, substituted or unsubstituted C1-Ce-alkyl heterocycloalkyl, substituted or unsubstituted Ca-Cβ-alkenyl cycloalkyl, substituted or unsubstituted C2-C6-alkenyl heterocycloalkyl, substituted or unsubstituted Ca-Cβ-alkynyl cycloalkyl, substituted or unsubstituted C2-C6-alkynyl heterocycloalkyl.

R1 is selected from the group consisting of H, substituted or unsubstituted C1-Cβ-alkyl, substituted or unsubstituted C1-Cβ-alkoxy, halogen. In a specific embodiment R1 is H.

B is either an amine selected from the group consisting of :

B1 B2 B11 B12

or an ether of the formula

B 1 0

or a carboxamide selected from the group consisting of :

83 B4 B5 B13 B14 B22

or a sulfonamide selected from the group consisting of :

B6 B7 B8 Bl 5 B16 B17 B18

or a urea moiety selected from the group consisting of :

B9 B19 B20 B21

D is either selected from the group consisting of

with m being an integer selected from 0, 1 or2 and n being an integer selected from 1 or 2; or D is

with n being an integer selected from O or 1.

R is selected from the group consisting of substituted or unsubstituted C1-Cs-alkyl, substituted or unsubstituted Ca-Cg-alkenyl, substituted or unsubstituted C∑-Cβ-alkynyl, substituted or unsubstituted C1-Q-alkoxy (including ethers or polyethers), substituted or unsubstituted C1-Cβ-alkyl amine, substituted or unsubstituted C1-C6-alkyl alkoxy, substituted or unsubstituted aryl, substituted or unsubstituted tieteroaryl, saturated or unsaturated 3-8-membered substituted or unsubstituted cycloaJkyl, 3-8-membered substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted C1-Cβ-alkyl aryl (e.g. a benzyl group), substituted or unsubstituted C1-Ce-alkyl heteroaryl, substituted or unsubstituted C2-C6-alkenyl aryl, substituted or unsubstituted CVCδ-alkenyl heteroaryl, substituted or unsubstituted Cz-Cβ-alkynyl aryl, substituted or "unsubstituted C2-C6-alkynyl heteroaryl, substituted or unsubstituted C1-Cβ-alkyl cycloalkyl, substituted or unsubstituted C1-Ce-alkyl heterocycloalkyl, substituted or unsubstituted C2-CValkenyl cycloalkyl, substituted or unsubstituted C2-C6-alkenyl heterocycloalkyl, substituted or unsubstituted C2-C6-alkynyl cycloalkyl, substituted or unsubstituted C2-C6-a.lkynyl heterocycloalkyl.

Where the moiety B is an amide B3, R could not be a phenyl - optionally fused with a heterocycloalkyl —substituted by one or 2 moieties selected from hydroxy, Cj-Ce alkyl, carboxy, C1-Cg alkoxy, C1-C3 alkyl carboxy, C2-C3 alkenyl carboxy, C2-C3 alkynyl carboxy or amino.

Said aryl or heteroaryl moities include phenyl, naphthyl, phenaaitrenyl, pyrrolyl, furyl, thienyl, imidazolyl, pyridyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyrazolyl, 1,2,3- triazolyl, 1,2,4-triazolyl, l,2,3-oxadiazolyL benzo(l,2,5)oxadiazolyl, 1,2,4-oxadiazolyl, 1,2,5-oxadiazolyl, 1,3,4-oxadiazolyl, tetrazolyl, l,3,4-triazinyL3 1,2,3-triazinyl, benzopyrimidinyl, benzodioxolyl, benzofuryl, [2,3-dihydro]beaizofuryl, isobenzoruryl, benzothienyl, indazolyl, benzotriazolyl, isobenzothienyl, indolyl, isoindolyl, 3H-indolyl, benzimidazolyl, benzothiazolyl, benzoxazolyl, pyridazinyl, pjαrimidyl, quinolizinyl, quinazolinyl, phthalazinyl, quinoxalinyl, cinnolinyl, naphthyridinyl, quinolyl, isoquinolyl, tetrazolyl, 5,6,7,8-tetrahydroquinolyl, 5,6,7,8-tetrahydroisoquLnolyl, purinyl, pteridinyl, xanthenyl, benzoquinolyl, oxolanyl, pyrrolidinyl, pyrazolidinyl, 2Η-benzo[d]l,3- dioxolenyl, indanyl, imidazolidinyl, 1,2,4-oxadiazolidinyl, 1,2,5-oxadiazolidinyl, 1,3,4- oxadiazolidinyl or isoxazolidinyl.

In a specific embodiment the aryl or heteroaryl moieties are : phenyl, pyridyl, pyrazolyl, benzodioxolyl, benzofuryl, benzothienyl, indazolyl.

Said cycloalkyl moities include in particular cyclopentyl, or cyclohexyl groups.

A further specific embodiment is related to compounds of formula (Z) wherein the substiruent ethynyl-A is in the para-position as set out below :

A specific embodiment consists in carboxylic acid of formula (I) wherein A is an aryl moiety, in particular a substituted or unsubstituted phenyl group. A specific phenyl would be a phenyl being substituted by a Ci-Cg-alkyl, more preferably by a d-Q-alkyl, a halogen or an alkoxy group, e.g. a butyl , trifluoromethyl group or a chlorine-

A further specific embodiment consists in carboxylic acid of formula (I), wherein B is either of

B1 B2 B4 B5

B6 B7 B8 B9 B10 In one embodiment B is either Bl or B2, in particular Bl. In one embodiment B is either of B12, B16, B17, B20 or B22. A further specific embodiment consists in carboxylic acid of formula (T), wherein D is either of :

In a further further specific embodiment D is

In still a further specific embodiment R is a C4-C6-alkyl, e .g. a hexyl group. Preferred compounds of the invention are those of formula (I), wherein A is a phenyL group substituted by a C1-C4-alkyl or a halogen, B is either Bl, R is a C4-C6-alkyl and D is _

Specific carboxylic acid derivatives according to formula (I) comprise the following -

5-[{4-[(4-Butylρhenyl)ethynyl]benzyl}(hexyl)amino]-2-hyd roxybenzoic acid, N-metfhyl-D- glucamine (i.e. l-deoxy-l-(me1hylamino)glucitol) salt

5-[{4-[(4-Butylphenyl)ethynyl]benzyl}(hexyl)amino]-2-hydr oxybenzoic acid, hydrochloride salt

5-[{4-[(4-Butylphenyl)ethynyl]benzyl}(hexyl)amino]-2-hydr oxybenzoic acid, lysine salt

5-({4-[(4-Butylphenyl)ethynyl]benzyl}{[(E)-2-phenylvinyl] sulfonyl}amino)-2- hydroxybenzoic acid

4-({ {4-[(4-Butylphenyl)ethynyl]benzyl}[2-(4-chlorophenyl)ethyl]a mino}-methyl)beinzoic acid, hydrochloride salt

{4-[({[(4-tert-Butylphenyl)amino]carbonyl}{4-[(4-bu1ylphe nyl)ethynyl]-benzyl}arnixio)- methyl]phenoxy}acetic acid

5-[{4-[(4-Butylphenyl)ethynyl]benzyl}(3-phenylpropyl)amin o]-2-hydroxy-benzoic a-cid, hydrochloride salt

{4-[({4-[(4-Butylphenyl)ethynyl]benzyl} {[(E)-2-phenylvinyl]sulfonyl}-amino) metb_3^1]- phenoxy}acetic acid 5-[{4-[(4-Bu1ylphenyl)etiiynyl]benzyl}(l-naph1iiyImethyl)ami no]-2-hydroxybenzoic acid, hydrochloride salt

[4-({{4-[(4-Butylphenyl)ethynyl]benzyl}[(cyclohexylamino) carbonyl]amino}methyl)- phenoxy]acetic acid

[4-({{4-[(4-Butylphenyl)eiiiynyl]beri2yl}[(cyclohexylamin o)carbonyl]-amino}rnethyl)- phenoxy]acetic acid, N-methyl-D-glucamine (i.e. l-deoxy-l-(methylammo)glucitol) salt

[4-({{4-[(4-Burylphenyl)ethynyl]benzyl}[(propylarmno)carb onyl]-arnino}methyl)- phenoxyjacetic acid

{4-[({4-[(4-Bύtylphenyl)ethynyl]ben2yl} {[(4-cyanophenyl)amino]carbonyl}arnino)- methyl]phenoxy}acetic acid

5-((4-tert-Butylbenzyl) {4-[(4-butylphenyl)ethynyl]benzyl}amino)-2-liydroxybeiizoic acid, hydrochloride salt

(4-{[{4-[(4-Butylphenyl)e1iiynyl]benzyl}(2-1iiienylsulfon yl)arniiio]methyl} phenoxy)acetic acid

5-[(l-{4-[(4-Butylphenyl)ethynyl]phenyl}ρentyl)oxy]-2-hy droxybenzoic acid

7-[(1-{4-[(4-Butylphenyl)ethynyl]phenyl}pentyl)oxy]-2,2-d imethyl-4H- 1 ,3-benzodioxin-4- one, N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)-glucitol) salt

(4-{[{4-[(4-Bu1ylphenyl)e1hynyl]berizyl}(ethylsulfonyl)am irio]-methyl}phenoxy)acetic acid

5-{ [{4-[(4-Butylphenyl)ethynyl]benzyl}(hexyl)amino]carbonyl}-2- hydroxy-benzoic .acid , N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)-glucitol) salt 5-{ [{4-[(4-Butylphenyl)ethynyl]benzoyl} (hexyl)amino]methyl}-2-hydroxybenzoic acid, N- methyl-D-glucamine (i.e. l-deoxy-l-(meiiiyl-amino)glucitol) salt

5-{[{4-[(4-Butylphenyl)ethynyl]benzyl}(hexyl)amino]sulfon yl}-2-hydroxy-benzoic acid , N-methyl-D-glucamine (i.e. l-deoxy-l-(metliylamino)-glucitol) salt

4-[{4-[(4-Butylphenyl)ethynyl]benzyl} (hexyl)amino]~2-hydroxybertzoic acid, N-methyl-D- glucamine (i.e. l-deoxy-l-(methylamino)glucitol) salt

5-[{4-[(4-Butylphenyl)e1hynyl]benzyl}(b.exyl)amino]-2-flu orobenzoic acid

5-[{4-[(4-Butylphenyl)ethynyl]benzyl}(hexyl)amino]-2-fluo robenzoic acid, N-methyl-D- glucamine (i.e. l-deoxy-l-(methylamino)glucitol) salt

5- {[{2-[(4-Butylphenyl)ethynyl]benzyl}(hexyl)amino]carbonyl}-2 -h.ydroxybenzoic acid

4-((3-Cyclopentylpropyl){4-[(4-fLuorophenyl)e1hynyl]benzo yl}amiαo)-2-hydroxybenzoic acid , N-methyl-D-glucamine (i.e. l-deoxy-l-(methyl-amino)glucitol) salt

4-[{4-[(4-Butylphenyl)eth.ynyl]benzoyl}(3-cyclopentylprop yl)amino]-2-hydroxybenzoic acid , N-methyl-D-glucamine (i.e. l-deoxy-l-(methyl-amino)glucitol) salt

5-{ [{4-[(4-Fluorophenyl)ethynyl]benzoyl}(hexyl)amino]methyl}-2- hydroxy-benzoic acid , N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)-glucitol) salt

5-{[{4-[(4-Chlorophenyl)ethynyl]benzoyl}(hexyl)amino]meth yl}-2-hydrqxybenzoic acid, N-methyl-D-glucamine (i.e. l-deoxy-l-(methyl-amino)glucitol) salt

2-Fluoro-5-{hexyl[4-(phenylethynyl)benzyl]amiαo}benzoic acid, N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol) salt

5-({4-[(4-Chlorophenyl)ethynyl]benzyl}(hexyl)amino)-2-hyd roxybenzoic acid, N-methyl- D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol) salt 5-(Hexyl{4-[(4-methoxyphenyl)ethynyl]benzyl}amino)-2-hydroxy benzoic acid, N-methyl- D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol)salt

5-[Hexyl(4- {[4-(trifluoromethyl)phenyl]ethynyl}benzyl)amino]-2-hydroxyb enzoic acid, N- methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol)salt

5-[{4-[(4-Butylphenyl)e1hynyl]ben2ryl}(cyclopentylinethyl )amino]-2-fluorobenzoic acid, N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol)salt

5-[{4-[(4-Butylphenyl)ethynyl]benzyl}(3,3-dimethylbutyl)a mino]-2-fluorobenzoic acid, N- methyl-D-glucamine (i.e. l-deoxy-l-(meth.ylamino)glucitol)salt

5-((Cyclopentylmethyl){4-[(4-me1iιoxyphenyl)ethynyl]ben2 yl}amino)-2-hydroxybenzoic acid, N-merayl-D-glucamine (i.e. l-deoxy-l-(meti.iylamino)glucitol)salt

5-({4-[(4-Butylphenyl)ethynyl]ben2yl}(ethyl)amino)-2-fluo robenzoic acid, N-methyl-D- glucamine (i.e. l-deoxy-l-(methylamino)glucitol) salt

5-(Hexyl{4-[(4-propylphenyl)ethynyl]benzyl}amino)-2-hydro xybenzoic acid, , N-methyl- D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol)salt

5-[{4-[(4-Butylphenyl)ethynyl]benzyl}(hexyl)amixio]-2-flu orobenzoic acid, lysine salt

5-[{4-[(4-Butylphenyl)ethynyl]ben2yl}(hexyl)amino]-2-fluo robenzoic acid, tromethamine (i.e. (2-amino-2-hydroxymethyl)-l,3-propanediol) salt

5-[{4-[(4-Butylphenyl)ethynyl]ben2yl}(pentyl)amino]-2-flu orobenzoic acid, N-metliyl-D- glucamine (i.e. l-deoxy-l-(methylamino)glucitol) salt

5-[{4-[(4-Butylphenyl)ethynyl]benzyl}(methyl)amino]-2-flu orobenzoic acid

5-[{4-[(4-Butylphenyl)ethynyl]benzyl}(cyclopropylmethyl)a mino]-2-fluorobenzoic acid, N-methyl-D-glucamiαe (i.e. l-deoxy-l-(methylamino)glucitol)salt 5-{Butyl[4-(phenylethynyl)benzyl]amino}-2-fluorobenzoic acid, N-methyl-D-glucamine (i.e. l-deoxy-l-(inethylamino)glucitol) salt.

2-Fluoro-5-{[4-(phenylethynyl)benzyl](propyl)amino}benzoi c acid, N-methyl-D- glucamine (i.e. l-deoxy-l-(methylamino)glucitol) salt

2-Fluoro-5-[{4-[(4-fluorophenyl)ethynyl]benzyl}(hexyl)ami no]benzoic acid, N-methyl-D- glucamine (i.e. l-deoxy-l-(meth.ylamino)glucitol)salt

2-Fluoro-5-(hexyl{4-[(4-propylphenyl)ethynyl]benzyl} amino)benzoic acid, N-methyl-D- glucamine (i.e. l-deoxy-l-(methylamino)glucitol)salt

5- { {4-[(4-Butylphenyl)ethynyl]benzyl}[(2-carboxycyclopropyl)met h.yl]amino}-2- fluorobenzoic acid, N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol)salt

5-[{4-[(4-Ethylphenyl)ethynyl]benzyl} (hexyl)amino]-2-fluorobenzoic acid, N-methyl-D- glucamine (Le. l-deoxy-l-(methylamino)glucitol)salt

5-[{4-[(4r/ert-Butylρhenyl)ethynyl]benzyl} (hexyl)amino]-2- fluorobenzoic acid, N-methyl- D-glucamine (i.e. l-deoxy-l-(methylamino)glιιcitol)salt

5-{[{4-[(4-Butylphenyl)ethynyl]phenyl}(hexyl)amino]methyl }-2-fluorobenzoic acid, N- methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol)salt

4-({(3,3-Dimethylbutanoyl)-4-[(4-hexylphenyl)ethynyl]anil ino}methyl)-2-hydroxybenzoic acid, N-metiiyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol) salt

5-[{4-[(4-Butylphenyl)ethynyl]benzyl}(isobutyl)amino]-2-f luorobenzoic acid, N-methyl-D- glucamine (i.e. l-deoxy-l-(methylamino)glucitol)salt

5-{[{4-[(4-Butylphenyl)ethynyl]benzyl}(hexyl)amino]carbon yl}-2-fluorobenzoic acid, N- methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol)salt 5-[{4-[(4-Butylphenyl)ethynyl]benzoyl}(hexyl)amino]-2-fluoro benzoic acid, N-methyl-D- gmcamine (i.e. l-deoxy-l-(methylammo)ghicitol)salt

5-[( {4-[(4-Butylphenyl)ethynyl]phenyl}sulfonyl)(hexyl)amino]-2-f luorobenzoic acid, N- methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol)salt

5-{[{4-[(4-Butylphenyl)ethynyl]benzoyl}(hexyl)amino]methy l}-2-fluorobenzoic acid, N- methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol)salt

5-{ [( {4-[(4-Butylphenyl)ethynyl]phenyl}sulfonyl)(hexyl)amino]meth yl}-2-fluorobenzoic acid

5-{ {4T[(4-Butylphenyl)ethynyl]ben2yl}[(propylamino)carbonyl]ami no}-2-fluorobenzoic acid

5-{ {4-[(4-Butylphenyl)ethynyl]benzyl}[(cyclob.exylamino)carbony l]amino}-2- fluorobenzoic acid

4-[{4-[(4-Chlorophenyl)ethynyl]benzoyl}(3-cyclopentylprop yl)amino]-2-hydroxybenzoic acid, N-rnethyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol)salt .

The compounds of formula (T) are useful in the treatment and/or prevention of obesity and/or metabolic disorders mediated by insulin resistance or hyperglycemia, comprising diabetes type I and/or II, inadequate glucose tolerance, insulin resistance, hyperlipidemia, hypertriglyceridemia, hypercholesterolemia or polycystic ovary syndrome (PCOS).

In one embodiment the compounds according to formula (T) are particularly useful in the treatment and/or prevention of diabetes type II, obesity and for the regulation of appetite in mammals. The compounds according to formula (T) are suitable for the modulation of the activity of PTPs, in particular of PTPlB. It is therefore believed that the compounds of the present invention are therefore useful for the treatment and/or prevention of disorders which are mediated by PTPs, in particular of PTPlB. Said treatment involves the modulation — notably the down regulation or the inhibition - of PTPs, particularly of PTPlB and/or GLEPP-L

The compounds according to formula (T) are also suitable for the treatment and/or prevention of cardiovascular disorders such as coronary obstruction and heart failure, in particular for the treatment and/or prevention of endothelial dysfunction in chronic heart failure. The compounds of this invention are particularly useful in the treatment of . increased peripheral vasoconstriction in chronic heart failure. Mainly, heart failure is, . defined by the inability of the heart to eject blood and to provide adequate perfusion of the peripheral organs. Heart failure does not only affect the myocardium, but also has many consequences on the peripheral circulation. Especially, heart failure is associated with an increased peripheral vascular resistance, secondary to peripheral vasoconstriction. This vasoconstriction is heterogeneous, and mostly affects the 'non essential' territories such as the skin, the intestine and the skeletal muscle, in order to maintain perfusion in the 'essential' territories such as the brain or the heart in a context of decreased cardiac output. However, this initially adaptive mechanism may on the long term increase cardiac afterload (resistance to ventricular contraction) and cardiac work, and thus aggravate contractile dysfunction and contribute to the transition from compensated to decompensated heart failure. Long term impairment or loss of heart muscle activity leads to the development of Chronic Heart Failure (CHF).

A further aspect of the present invention is related to a pharmaceutical composition a comprising a carboxylic acid according to Formula (I) and at least one further drug (in particular an anti-diabetes agent). In one embodiment the further diabetes agents are selected from the group comprising or consisting of insulin (or insulin mimicks), aldose reductase inhibitors, alpha-glucosidase inhibitors, sulfonyl urea agents, biguanides (e.g. metformin), thiazolidiones (e.g. pioglitazone, rosiglitazone) or PPARs agonists, or c-Jun Kinase or GSK-3 inhibitors .

Insulins useful with the method of the present invention include rapid acting insulins, intermediate acting insulins, long acting insulins and combination of intermediate and rapid acting insulins.

Aldose reductase inhibitors useful in the method of this invention include those known in the art. These include the non-limiting list of:

a) the spiro-isoquinoline-pyrrolidine tetrone compounds disclosed in U.S. Patent No. 4,927,831 (Malamas), the contents of which are incorporated herein by reference, which includes ARI-509, also known as minalrestat or Spiro[isoquinolineτ-4(1H), 3'- pyrrolidine]-l,2',3,5'(2H)-tetrone, and analogs thereof,

b) 2- [(4-bromo-2-fiuorophenyl)methyl]-6-fluoro- (9CI);

c) the compounds of U.S. Patent No. 4,439,617, the contents of which are incorporated herein by reference, which includes Tolrestat, also known as Glycine, N-[[6- memoxy-5-(1xifluororriethyl)-l-naphtalenyl]thioxomethyl]-N-m ethyl-(9Cr) orAY- 27773 and analogs' thereof;

d) Sorbinil (RegistraNo. 68367-52-2) also known as 8piro[4H-l-benzopyran-4,4'- imidazoline]-2',5'.-dione, 6-fiuoro-2,3-dihydro-, (4S)-(9CI) or CP 45634;

e) Methosorbinil;

f) Zopolrestat, which is 1 -Phtalazineacetic acid, 3,44-dihydro-4-oxo-3-[[5- (trifluoromethyl)-2-benzothiazolyl]methyl]-(9CI) (Registry No.l 10703-94-1); g) Epalrestat, which is 3-Thiazolidineacetic acid, 5-[(2£)-2-methyl-3-phenyl-2- propenylidene]-4-oxo-2-thioxo-, (5Z)-(9CI) (Registry No. 82150-09-9);

h) Zenarestat (Registry No. 112733-40-6) or 3-[(4-bromo-2-fluorophenyl)-methyl]-7- chloro-3,4-dihydro-2,4-dioxo-l(2H)-qυinazoline acetic acid;

i) Imirestat, also known as 2s7-difluorospiro(9H-fluorene-9,4'-imidazolidine)-2'J5'- dione;

j) Ponalrestat (Registry No.72702-95-5)., which is 1-Phtalazineacetic acid, 3-[(4-bromo- 2-fluorophenyl)methyl]3,4-dihydro-4-oxo-(9CI) and also known as Stalil or Statyl;

Ic) ONO-2235, which is 3-Thiazolidineacetic acid, 5-[(2£)-2-methyl-3-phenyl-2- propenylidene-4-oxo-2-thioxo-, (5Z)-(9CI);

1) GP-1447, which is {3-[(4,5,7-trifluorol)enzothiazol-2-yl)methyl]-5- methylphenylacetic acid};

m) CT-112, which is 5-(3-ethoxy-4-pentyrloxyphenyl)-2,4-thiazolidinedione;

n) BAL-ARI 8, which is Glycine, N[(7-fluoro-9-oxo-9H-xanthen-2-yl)sulfonyl]-N- methyl-)9CI), Reg.No.124066-40-6));

o) AD-5467, which is 2,3-dihydro-2,δ-bis(l-methylethyl)-3-thioxox-4H-l,4- benzoxazine-4-acetic acid of the chloride salt form (4H-l,4-Benzoxazine-4-acetic acid, 2,3-dihydro-2,8-bis(l-methylethyl)-3-thioxo-(9CI);

p) ZD5522, which is (3',5'-dimethyl-4'-nitromethylsulfonyl-2-(2-tolyl)acetanilid e);

φ 3,4-dihydro-2,8-diisopropyl-3-thioxo-2H-l,4-benzoxazine-4-ac etic acid;

r) 1- [(3 -bromo-2-benzofuranyl)sulfonyl] -2,4-imidazolidinedione (M- 16209), s) NZ-314, which is 1-Imidazolidineacetic acid, 3-[(3-nitrophenyl)methyl]-2,455-trioxo- 9(CI) (Registry No.128043 -99-2),

t) 1-phtalazineacetic acid, 3,4-dihydro-4-oxo-3-[(5-trifluoromethyl)-2-benzothiazolyl]- methyl];

u) M-79175, which is Spiro[4H-l-benzopyran-4,4'-imidazolidine]-2',5'-dione; 6-fmoro-2,3-dihydro-2-methyl-, (2R, 4S)-(9CI);

v) SPR-210, which is 2H-l,4-Benzothiazine-2-acetic acid, 3, 4-dihydro-3-oxo-4-[(4,5,7- trifluoro-2-benzothiazolyl)methyl]-(9Cr);

w) Spiro[pyrrolidine-3,6'(5'H)-pyrrolo[l,2,3-de][l ,4]benzoxazine]-2,5,5'-trione, 8'- chloro-2'-3'-dihydro-(9CI)(also known as AND 138 or 8-chloro-2',3'-dihydrospiro- [pyrolizine-3,6'(5H)-pyrrolo-[l,2,3-de]-[l,4]benzoxazine]2,5 ,5'-trione);

x) 6-fluoro-2,3-dihydro-2',5'-dioxo-(2S-cis)-spiro[4H-l-benzoρ yran-4, 4'- imidazolidine]-2-carboxamide (also lcnown as SNK-860);

or a pharmaceutically acceptable salt form of one or more of these compounds .

Among the more preferred aldose reductase inhibitors of this invention are minalrestat, Tolrestat, Sorbinil, Methosorbinil, Zopolrestat, Epalrestat, Zenarestat, Imirestat and Ponalrestat or the pharmaceutically acceptable salt forms thereof.

The alpha-glucosidase inhibitors useful for the method of the present invention include miglitol or acarbose, or the pharmaceutically acceptable salt form thereof.

Sulfonylurea agents useful with the method of the present invention include glipizide, Glyburide (Glibenclamide) Chlorpropamide, Tolbutamide, Tolazamide and Glimepiride, or the pharmaceutically acceptable salt forms thereof. Preferably, said supplementary pharmaceutically active agent is selected from the group consisting of a rapid acting insulin, an intermediate acting insulin, a long acting insulin, a combination of intermediate and rapid acting insulins, Inalrestat, Tolrestat, Sorbinil, Methosorbinil, Zopolrestat, Epalrestat, Zenarestat, Imirestat, Ponalrestat, ONO-2235, GP- 1447, CT-112, BAL-ARI 8, AD-5467, ZD5522, M-16209, NZ-314, M-79175, SPR-210, ADN 138, or SNK-860, Miglitol, Acarbose, Glipizide, Glyburide, Chlorpropamide, Tolbutamide, Tolazamide, or Glimepriride.

Still a further object of the invention is a process for preparing carboxylic acids according to formula I

The carboxylic acids of the present invention may be prepared from readily available starting materials using the below general methods and procedures. It will be appreciated that where typical or preferred experimental conditions (Le. reaction temperatures, time, moles of reagents, solvents, etc.) are given, other experimental conditions may also be used, unless otherwise stated. Optimum reaction conditions may vary with the particular reactants or solvents used, but such conditions can be determined by one skilled in the art by routine optimisation procedures.

By the following set out general methods and procedures compounds of formula (T) are obtained.

The carboxylic acid compounds (I) exemplified in this invention may be prepared from readily available starting materials using the following general methods and procedures. It will be appreciated that where typical or preferred experimental conditions (i.e. reaction temperatures, time, moles of reagents, solvents, etc.) are given, other experimental conditions can also be used unless otherwise stated. Optimum reaction conditions may vary with the particular reactants or solvents used, but one skilled in the art can determine such conditions by routine optimisation procedures. In general, the carboxylic acid compounds according to formula (I) of this invention may be prepared from readily available starting materials. If such starting materials are not • commercially available, it may be prepared by standard synthetic techniques. The following general methods and procedures described hereinafter in the Examples may be employed to prepare compounds of formula (I).

Generally, carboxylic acid compounds according to formula (I) may be obtained by initial deprotection of the precursors (F) (see Scheme 1 below), wherein B (more specifically B 1-22), R1 and A are as above defined and the moiety D' is a protected form of D as above defined, for example use of 2,2-dimethyl-4-oxo-4H-l,3-benzodioxin-4-one for D' when D is ortho-hydroxy benzoic acid moiety. Scheme 1

("') (I) The moiety B 1-22 is either of the following

B1 B2 B3 B4 B5 D

B6 B7 B8 B9

B10 B11 B12 B13 B14

B15 B16 B17 B18 B19 B20 B21 B22

It is recognized by those skilled in the art of organic synthesis that the successful use of these methods and of the methods described below is independent upon the compatibility of substituents on other parts of the molecules. Protecting groups and/or changes in the order of steps described herein may be required.

Those skilled in the art will recognize that certain reactions, for example the preparation of derivatives of formula (11) (Scheme 2), are best carried out when potentially reactive functionality on the molecules is masked or protected, -thus avoiding side reactions and/or increasing the yield of the reaction. Examples of protecting groups moieties and all protection and deprotection methods, may be found in I?hilip J. Kocienski, in "Protecting Groiφs", Georg Thieme Verlag Stuttgart, N"ew York, 1994 and, Theodora W. Greene and Peter G. M. Wuts in "Protective Groups in Organic Synthesis", 3rd edition, John Wiley & Sons Inc., 1999 (NY). The need and choice of protecting groups for a particular reaction is known to those skilled in the art and depends upon the nature of the functional group to be protected (hydroxy, amino, carboxy, etc...)_. the structure and the stability of the molecule of which the substituent is part of the reaction conditions.

Carboxylic acid derivatives according to formula (P) may be obtained by three different routes. As outlined in Scheme 2, a first route to prepare carboxylic acid derivatives according to formula (P) involves a reductive alkylation by reacting a protected carboxylic acid derivative of formula QI) with an alkyrte derivative of formula (III) where FG of derivative (II) being a

• Functional Group FGl defined as -ISIH2 (amine) or

• Functional Group FG2 defined as -CH2NH2 (methyleneamine), and

FG of derivative (III) being

• Functional Group FG3 defined as -CHO (aldehyde).

The reductive alkylation reaction can be performed by an imine formation in solvents such as toluene under azeotropic removal of water conditions for a few hours, e.g. one hour to 24 hours, followed by reduction reaction with agents such as sodium borohydride, sodium triacetoxyborohydride or sodium cyanoborolhydride, preferably sodium borohydride in solvents such as a mixture of toluene and methanol, for a few hours, e.g. one hour to 24 hours, at temperature rising from 0°C to 50°"C. Alternatively the reductive alkylation can be performed in one- or two-step-protocol using agents such as sodium triacetoxyborohydride, sodium cyanoborohydride in solvents such as 1,2-dichloroethane in presence of acetic acid for a few hours, e.g. one hour to 24 hours, at temperature rising from rt to 500C. Alternatively derivatives of formula (II) can be substituted by FG3 group and consequently derivatives of formula (III) can be substituted by FGl or FG2 groups.

Then amine derivatives of formula (TV) can be treated with derivatives of formula (V) to give compounds of formula (T) as shown in Scheme 2. The suitable R' group of derivatives of formula (V) may be chosen by those skilled in the art to prepare the compound of formula (I'). Those skilled in the art may select the adequate R' group to obtain R group as above defined after the reduction step described in the following steps. ΛVhen derivatives of formula (V) is R'-FG3, reductive alkylation with amino derivatives of formula (IV) can be performed with reducing agents such as sodium triacetoxyborohydride.or sodium cyanoborohydride, preferentially sodium triacetoxyborohydride in solvents such as 1,2- dichloroethane, for a few hours, e.g. one.hour to 24 hours, at temperature- rising from rt to 700C. When derivatives offormula (V) is R-FG4 with FG4 is defined as a Leaving Group (LG), e.g. as halogen such as bromide, iodide, chloride, preferentially bxomide and chloride or as a sulfonate derivative such as a mesylate or a tosylate derivative, reaction with derivatives offormula (IV) can be performed using sodium hydride in polar aprotic solvents such as DMSO at rt for 2-24 hours. When derivatives offormu-la (V) are R-FG5 with FG5 is defined as -SO2Cl or R-FG8 with FG8 defined as -COCl, reaction with derivatives of formula (IV) can be performed using a base such as tiietbtyl amine, diisopropylethylamine, a polymer supported-amine, e.g. a polymer supported-morpholine, in solvents such as DCM or in pyridine without use of additional base vet room temperature for 2-24 hours. When derivatives of formula (V) is R-FG6 with FG6 is defined as R- N=C=O, reaction with derivatives of formula (IV) can be performed with or without a base such as diisopropylethylamine, in solvents such as DCM at rt for 2-24 ttours. Scheme 2

B being either of B1,B2,B7,B8,B9,B12. B20,B21,B22

A second route to prepare carboxylic acid derivatives according to formula (F) is outlined in Scheme 3. Intermediates of formula (VI) could be obtained by reductive aLkylεt-tiόn between a protected carboxylic acid derivative of formula (H) with derivatives or formula (V) where FG of derivative (Et) is FG3 and FG of derivative (V) is FGl . > The reductive alkylation can be performed in one- or two-step-protocol using reducing agents such as sodium triacetoxyborohydride, sodium cyanoborohydride or sodium borohydride_, preferentially sodium triacetoxyborohydride in solvents such as 1,2-dichloroethaa.e in presence of acetic acid for a few hours, e.g. one hour to 24 hours, at rt. Alternatively, the reductive alkylation reaction can be performed by an imine formation in solvents such as toluene under azeotropic removal of water conditions for a few hours, e.g. one ho~ur to 24 hours, followed by reduction reaction with agents such as sodium borohydride, sodium triacetoxyborohydride or sodium cyanoborohydride, preferentially sodium borohydride in solvents such as a mixture of toluene and methanol, for a few hours, e.g. one hour- to 24 hours, at temperature rising from 00C to 500C. Alternatively derivatives of formula (II) can be substituted by FGl or FG2 and consequently derivatives of formula (V) can bet substituted by FG3. Alternatively, instead of using a reductive alkylation reactions- intermediate of formula (VI) could be prepared in a two-step-protocol by reacting: a protected carboxylic acid derivative of formula (II) with a compound of formula CV) to give an amide derivatives offormula (VII), with FG of derivative (II) is FGl or FG2 and FGr of derivative (V) is FG7 defined as -COOH or FG8 defined as -COCl, preferably FG8 in solvents such as DCM in the presence of a base such as diisopropylethylamine for a few hours, e.g. one hour to 24 hours, at temperature rising from O0C to rt; followed by reaction with reducing agents such as BEb in solvents such as THF for a few hours, e.g. one homr to 24 hours, at temperature rising from rt to reflux. Alternatively derivatives of formula (H) can be substituted by FG7 or FG8 and consequently derivatives of formula (V) can be substituted by FGl.

Then derivatives of formula (VI) can be treated with derivatives of formula (IΙI)'to give compounds of formula (I') as shown in Scheme 3. When FG substitution ;of derivatives of formula (III) is FG3, the reductive alkylation with derivatives of formula (VI) can be performed with reducing agents such as sodium triacetoxyborohydride or. sodium cyanoborohydride, preferably sodium triacetoxyborohydride in solvents such as 1 ,2- dichloroethane, for a few hours, e.g. one hour to 24 hours, at temperature rising from rt to 700C. When FG substitution of derivatives of formula (HI) is FG7, the reaction with • derivatives of formula (VI) can be performed with coupling agents such as EDC/HOBT* in presence of DIEA in solvents such as DCM, for a few hours, e.g. one hour to 24 hours, at temperature rt. When FG substitution of derivatives of formula (III) is FG8 or FG5, the reaction with derivatives of formula (VT) can be performed using a base such.as diisopropylethylamine or triethylamine in solvents such as DCM, THF or in pyridine ' without use of additional base, preferentially in pyridine for a few hours, e.g. one hour to 24 hours, at temperature rising from room temperature to 600C. Scheme 3

I7

A third route to prepare carboxylic acid derivatives according to formula (T) is outlined in Scheme 4. Intermediate of formula (VTH) could be obtained by reductive alkylation between an alkyne derivative of formula (III) with a compound of formula (V) where FG of derivative (III) is FG3 and FG of derivative (V) is FGl. The reductive alkylation can be , performed in one- or two-step-protocol using reducing agents such as sodium triacetoxy- borohydride, sodium cyanoborohydride or sodium borohydride, preferably sodium triacetoxyborohydride in solvents such as 1,2-dichloroethane in presence of acetic acid.for a few hours, e.g: one hour to 24 hours, at rt. Alternatively, the reductive alkylation reaction can be performed by an imine formation in solvents such as toluene under azeotropic removal of water conditions for a few hours, e.g. one hour to 24 hours, followed by a reduction reaction with agents such as sodium borohydride, sodium triacetoxyborohydride or sodium cyanoborohydride, preferentially sodium borohydride in solvents such as a mixture of toluene and methanol, for a few hours, e.g. one hour to 24 hours, at.a temperature rising from 00C to 5O0C. Alternatively, derivatives of formula (III) can be substituted by FGl or FG2 and consequently derivatives of formula (V) can be substituted by FG3. Then derivatives of formula (VEOf) can be treated with derivatives of formula (II) to give compounds of formula (T) as shown in Scheme 4. When FG of derivatives of formula (II) is FG3, the reductive alkylation with derivatives of formula (VHI) can be performed with reducing agents such as sodium triacetoxyborohydride or sodium cyanoborohydride, preferably sodium triacetoxy-borohydride in solvents such as 1,2-dichloroethane, for a few hours, e.g. one hour to 24 hours, at temperature rising from rt to 700C. When FG of derivatives of formula QX) is FG7, the reaction with derivatives of formula (VHT) can be performed with coupling agents such as EDC/HOBT in presence ofDIEA.in solvents such as DCM, for a few hours, e.g. one hour to 24 hours, at rt. When FG substitution of derivatives of formula QI) is FG8 or FG5, the reaction with derivatives of formula (VIII) can be performed using a base such as diisopropylethylamine or triethylainine iri solvents such as DCM, THF or in pyridine without use of additional base, preferentially in pyridine for a few hours, e.g. one hour to 24 hours, at temperature rising from rt to.6O0C; or alternatively using a base such as potassium carbonate in solvents such as aimixture of dioxane and water, e.g. with a 1:1 ratio, for a few hours, e.g. one hour to at room temperature. Scheme 4

("') B being B2,B3,B6,B12,B14,B18

Compounds of formulae (II), (III) and (V) are either commercially available compounds or may be prepared by standard synthetic techniques as hereinafter described in the Examples.

Carboxylic acid derivatives (F) with D' as defined as above can be prepared after deprotec- tion step as described in Scheme 1 by a standard synthetic approach. Carboxylic acid . derivatives (F) when containing an ether moiety such as BlO can be prepared after deprotection step as described in Scheme 1, by a standard synthetic approach as hereinafter described in the Examples.

Derivatives of formula (HI) and intermediates of formulae (F), (IV) and (VHI), preferably derivatives of formula (III) can be prepared by Sonogashira cross coupling reaction with a substituted alkyne and an aryl moiety which is substituted by a leaving group such as Br, Cl, I, OMs, OTf , in the presence of additives, such as copper (I) salts in conjunction with palladium catalysts, (e.g. palladium tetrakis (triphenylphosphine), and amines (e.g. triethylamine). Preferred conditions imply use of copper(I) bromide, palladium tetraMs(triphenyl-phosphine) in triethylamine at e.g. at 900C.

Novel intermediate compounds of formula (F) are selected from the group consisting of: 6-[{4-[(4-Bu1ylphenyl)ethynyl]benzyl}(hexyl)amino]-2,2-diiii etiiyl-4H-l,3-benzodioxin-4- one

Methyl 5-[{4-[(4-butylphenyl)ethynyl]ben2yl}(hexyl)amino]-2-hydroxy benzoate

(E)-N-{4-[(4-Butylphenyl)ethynyl]benzyl}-N-(2,2-dimethyl- 4-oxo-4H-l,3-benzodioxin-6- yl)-2-ρhenylethylenesulfonamide

Methyl 4-({{4-[(4-butylphenyl)ethynyl]benzyl} [2-(4-chlorophenyl)ethyl]amino}methyl)- benzoate

Methyl {4-[({[(4-tert-butylphenyl)amino]carbonyl} {4-[(4-butylphenyl)ethynyl]ben2yl}- amino)methyl]pherioxy} acetate

6-[{4-[(4-Butylplienyl)e11iynyl]benzyl}(3-phenylpropyl)am ino]-2,2-dimethyl-4H-l,3- benzodioxin-4-one

Methyl {4-[({4-[(4-butylphenyl)ethynyl]ben2yl} {[(E)-2-phenylvinyI]sulfonyl}amino)- methyljphenoxy } acetate

64{44(4-Butylphenyl)ethynyl]benzyl}(l-naph%lmethyl)amino] -2,2-dimethyl-4H-l,3- benzodioxin-4-one

Methyl [4-({ {4-[(4-butylphenyl)ethynyl3benzyl} [(cyclohexylamino)carbόnyl]amiαo}- methyl)phenoxy]acetate

Methyl [4-({{4-[(4-butylphenyl)ethynyl]benzyl} [(propylamino)carbonyl]amino}- meuiyl)phenoxy] acetate Methyl [4-({{4-[(4-butylphenyl)ethynyl]benzyl}[(4-cyanoanilino)carb onyl]amino}- methyl)phenoxy]acetate

6-((4-tert"Butylbenzyl){4-[(4-butylphenyl)e1hynyl]ben2yl} amino)-2,2-dimethyl-4H-l,3- beazodioxin-4-όne

Methyl (4 -{ [{4-[(4-butylphenyl)ethynyl]benzyl}(2-tbienylsulfonyl)amino] methyl}- phenoxy)acetate

6-[(l-{4-[(4-Butylphenyl)ethynyl]phenyl}pentyl)oxy]-2,2-d imethyl-4H- 1 ,3-benzodioxin-4- one

Methyl (4-{[{4-[(4-butylphenyl)ethynyl]ben2yl}(ethylsulfonyl)amino] methyl}-phenoxy)- acetate

N- {4-[(4-Butylphenyl)ethynyl]ben2yl}-N-hexyl-2,2-dimethyl-4-ox o-4H- 1 ,3-benzodioxine- ■

4-[(4-Butylphenyl)ethynyl]-N-[(2,2-dimethyl-4-oxo-4H-l,3- benzodioxin-6-yl)methyl]-N- hexylbenzamide

7-[{4-[(4-Butylphenyl)ethynyl]ben2yl}(hexyl)amino]-2,2-di methyl-4H-l,3-benzodioxin-4- one

Methyl 5-[{4-[(4-butylphenyl)ethynyl]ben2yl}(hexyl)amino]-2-fluorob enzoate N-{2-[(4-Butylphenyl)ethynyl]ben2yl}-N-hexyl-2,2-dimethyl-4- oxo-4H-l,3-benzodioxine- 6-carboxamide 4-Bromo-N-(3-cyclopentylpropyl)-N-(2,2-dimethyl-4-oxo-4H-l,3 -benzodioxin-7- yl)benzamide N-(3-Cyclopen.tylpropyl)-N-(2,2-dimethyl-4-oxo-4H-l,3-beiizo dioxin-7-yl)-4-[(4- fluorophenyl)ethynyl]benzamide 44(4-Butylphenyl)ethynyl]-N-(3-cyclopentylpropyl)-N-(232-dim ethyl-4-oxo-4H-l,3- benzodioxin-7-yl)benzamide N-[(2,2-Dimethyl-4-oxo-4H-l,3-benzodioxin-6-yl)methyl]-4-[(4 -fluorophenyl)ethynyl]-N- hexylbenzamide 4-[(4-Chlorophenyl)ethynyl]-N-[(2,2-dimethyl-4-oxo-4H-l,3-be nzodioxin-6-yl)meihyl]-N- hexylbenzamide Methyl 2-fluoro-5-{hexyl[4-(phenylethynyl)benzyl]amino}benzoate 6-({4-[(4-Chlorophenyl)etiynyl]benzyl}(hexyl)amino)-2,2-dime thyl-4H-l53-benzodioxin- 4-one 6-(Hexyl{4-[(4-methoxyphenyl)ethynyl]benzyl}amino)-2,2-dimet hyl-4H- 1 ,3-benzodioxin- 4-one 6-[Hexyl(4-{[4-(trifluoromethyl)phenyl]ethynyl}benzyl)amino] -2,2-dimethyl-4H-l,3-- benzodioxin-4-one 5-{[4-(4-Butyl-phenylethynyl)-benzyl]-cycloρentylmethyl-ami no}-2-fluoro-beήzoic acid methyl ester

Mefiiyl 5-[{4"[(4-bu1ylphenyl)ethynyl]benzyl}(3,3-dimethylbutyl)ammo ]-2-fluorob.enzoate

6-((Cyclopen1ylmeώyl){4-[(4-me1hoxyphenyl)ethynyl]benzyl }amino)-2,2-dimetliyl-4H- 1 ,3-benzodioxin-4-one

Methyl 5-((cyclopentyhnethyl){4-[(4-methoxypb.enyl)ethynyl]-ben2yl} amino)-2- hydroxybenzoate • ■

Methyl 5-({4-[(4-butylphenyl3ethynyl]benzyl}(ethyl)amino)-2-fluorob enzoate

6-(Hexyl{4-[(4-propylphenyl)ethynyl]benzyl}amino)-2,2-dim ethyl-4H-l,3-benzodioxin-4- one

Methyl 5-(hexyl{4-[(4-propylpb.enyl)ethynyl]benzyl}amino)-2-hydroxy benzoate

Methyl 5-[{4-[(4-butylphenyl)ethynyl]benzyl}(pentyl)amino]~2-fluoro benzoate

Methyl 5-[{4-[(4-butylphenyl)ethynyl]benzyl}(methyl)amino]-2-fluoro benzoate

Methyl 5-[{4-[(4-butylphenyl)ethynyl]benzyl}(cyclopropylmethyl)ammo .]-2- fluorobenzoate

Methyl 5-{butyl[4-(phenylethynyl)benzyl]amino}-2-fluorobenzoate Methyl 2-fluoro-5-{[4-(phenylethynyl)benzyl]fpropyl)amino}benzoate Methyl 2-fluoro-5-[{4-[(4-fluorophenyl)ethynyl]benzyl}-(hexyl)amino ] benzoate Methyl 2-fluoro-5-(hexyl{4-[(4-propylphenyl)ethynyl]-benzyl}amino) benzoate Methyl 5-({4-[(4-butylphenyl) ethynyl]benzyl}{[2-(ethoxycarbonylj cyclopropyl]methyl}amino)-2-fluorobenzoate Methyl 5-[{4-[(4-ethylphenyl)ethynyl]benzyl}(hexyl)amino]-2-fluorob enzoate ; Methyl 5-[{4-[(4-tert-butylphenyl)ethynyl]benzyl}(hexyl)amino3-2-fl uorobenzoate Methyl 5-{[4-[(4-butylphenyl)ethynyl](hexyl)anilino]methyl}-2-fluor obenzoate N-[(2,2-Dimethyl-4-oxo-4H-l,3-benzodioxin-7-yl)methyl]-N-{4- [(4- hexylphenyl)ethynyl]phenyl}-3,3-dimeth.ylbutanamide Methyl 5-[{4-[(4-butylphenyl)etb.ynyl]benzyl}(isobutyl)amino]-2-flu orobenzoate Methyl 5-{ [{4-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amino]carbonyl}-2- fluorobenzoate Methyl 5-[{4-[(4-butylphenyl)ethynyl]benzoyl}(hexyl)ammo]-2-fluorob enzoate' Methyl 5-[({4-[(4-butylρhenyl)ethynyl]ρlienyl}sulfonyl)(liexyl)am ino]-2-fluorobenzoate Methyl 5-{[{4-[(4-butylphenyl)ethynyl]benzoyl}(hexyl)amino]inethyl} -2-fluorobenzoate Mefhyl 5-{[({4-[(4-bufylphenyl)ethynyl]phenyl}sulfo:nyl) (hexyl)amino] methyl}-2- fluorobenzoate

Methyl 5-{{4-[(4-butylphenyl)ethynyl]benzyl}[(propy-lamino)carbonyl ]amino}-2- fluorobenzoate

Methyl 5-{ {4-[(4-butylpheπyl)ethynyl]benzyl}[(cyclohexylamino)carbony l]amino}-2- fluorobenzoate

4-[(4-Chlorophenyl)ethynyl]-N-(3-cyclopentylpropyl)-N-(2, 2-dimethyl-4-oxo-4H-l,3- benzodioxin-7-yl)benzamide

Further intermediate compounds suitable to prepare the intermediates (I'), are selected, form the group consisting of:

Methyl {4-[({4-[(4-butylphenyl)ethynyl]benzyl}amrno)methyl]phenoxy} acetate . 2,2-Dimethyl-6-nitro-4H-l,3-benzodioxin-4-one

6-Ainino-2,2-dimethyl-4H-l,3-benzodioxin-4-one

6-({4-[(4-Butylphenyl)ethynyl]benzyl}amino)-2,2-dimethyl- 4H- 1 ,3-benzodioxin-4-one

{4-[(4-Butylphenyl)ethynyl]benzyl}[2-(4-chlorophenyl)ethy l]amine

1-{4-[(4-Butylphenyl)ethynyl]phenyl}- 1-pentanol

2,2-Dimethyl-4-oxo-4H-l,3-benzodioxine-6-carboxylic acid

N-{4-[(4-Butylphenyl)ethynyl]benzyl}-1-hexanamine

2,2-Dimethyl-4-oxo-4H- 1 ,3-benzodioxine-6-carbaldehyde

6-[(Hexylamino)methyl]-2,2-dimethyl-4H-l,3-benzodioxin-4- one

7-[4-(4-Butyl-phenylethynyl)-benzylamino]-2,2-dimethyl-be nzo[l:,3]dioxin-4-one Methyl 5-({4-[(4-butylphenyl)ethynyl]benzyl}amino)-2-fluorobenzoate N-{2-[(4-Butylphenyl)ethynyl]benzyl}- 1-hexanamine 3-Cyclopentyl-N-(2,2-diinethyl-4-oxo-4H-l,3-benzodioxin-7-yl )propanamide 7-[(3-Cyclopentylpropyl)amino]-2,2-dimethyl-4H- 1 ,3-benzodioxin-4-one 4-[(4-Chloropb.enyl)ethynyl]benzoic acid Methyl 2-fluoro-5-{[4-(phenylethynyl)benzyl]amino}benzoate 6-({4-[(4-Chlorophenyl)ethynyl]ben2yl}amino)-2,2-dimetb.yl-4 H-l,3-benzodioxin-4-one 6-({4-[(4-Methoxyphenyl)ethynyl]beiizyl}amino)-2,2-dimethyl- 4H-l,3-benzodioxin-4-one 2,2-Dimethyl-6-[(4-{ [4-(trifluoromethyl)phenyl]ethynyI}benzyl)aα3iino]-4H- 1 ,3- benzodioxin-4-one 2,2-Dimetb.yl-6-({4-[(4-propylphenyl)ethynyl]ben2yl}amino)-4 H- 1 ,3-benzodioxin-4-one Methyl 2-fluoro-5-(hexylamino)benzoate 4-[(4-Butylphenyl)ethynyl]benzoyl chloride Methyl 5-[[(4-bromophenyl)sulfonyl](liexyl)ammo]-2-fluorobenzoate Methyl 2-fluoro-5-[(hexylatnino) methyl]benzoate Methyl 5-{[[(4-bromophenyl)sulfonyl](hexyl)amino]methyl}-2-fluorobe nzoate 4-[(4-Butylphenyl)ethynyl]aniline 4-[(4-Hexylphenyl)ethynyl]aniline

7-(Dibromomethyl)-2,2-dimethyl-4H-l,3-benzodioxin-4-one 2,2-dimethyl-4-oxo-4H- 1 ,3-benzodioxine-7-carbaldehyde

7-({4-[(4-Hexylphenyl)efhynyl]anilino}methyl)-2,2-dimethy l-4H-l,3-benzodioxin-4-one

When employed as pharmaceuticals, carboxylic acids of the present invention are typically. administered in the form of a pharmaceutical composition. Hence, pharmaceutical . compositions comprising a compound of formula (I) and a pharmaceutically acceptable carrier, diluent or excipient therefore are also within the scope of the present invention. A person skilled in the art is aware of a whole variety of such carrier, diluent or excipient. compounds suitable to formulate a pharmaceutical composition.

The compounds of the invention, together with a conventionally employed adjuvant, car¬ rier, diluent or excipient may be placed into the form of pharmaceutical compositions and: unit dosages thereof, and in such form may be employed as solids, such as tablets or filled capsules, or liquids such as solutions, suspensions, emulsions, elixirs, or capsules filled with the same, all for oral use, or in the form of sterile injectable solutions for parenteral (including subcutaneous use). Such pharmaceutical compositions and unit dosage forms thereof may comprise ingredients in conventional proportions, with or without additional active compounds or principles, and such unit dosage forms may contain any suitable effective amount of the active ingredient commensurate with the intended daily dosage . range to be employed.

When employed as pharmaceuticals, carboxylic acids of this invention are. typically administered in the form of a pharmaceutical composition. Such compositions can be prepared in a manner well known in the pharmaceutical art and comprise at least one active compound. Generally, the compounds of this invention are administered in a • pharmaceutically effective amount. The amount of the compound actually administered will typically be determined by a physician, in the light of the relevant circumstances, including the condition to be treated, the chosen route of administration, the actual compound administered, the age, weiglit, and response of the individual patient, the severity of the patient's symptoms, and. the like.

The pharmaceutical compositions of these inventions can be administered by a variety of routes including oral, rectal, transdermal, subcutaneous, intravenous, intramuscular, and intranasal. The compositions for oral administration can take the form of bulk liquid solutions or suspensions, or bulk powders. More commonly, however, the compositions are presented in unit dosage forms to facilitate accurate dosing. The term "unit dosage forms" refers Io physically discrete units suitable as unitary dosages for human subjects and other mammals, each unit containing a predetermined quantity of active material calculated to produce the desired therapeutic effect, in association with a suitable pharmaceutical < excipient. Typical unit dosage forms include prefilled, premeasured ampoules or syringes of the liquid compositions or pills, tablets, capsules or the like in the case, of solid compositions. In such compositions, th.e carboxylic acid according to the invention is usually a minor component (from about 0.1 to about 50% by weight or preferably from about 1 to about 40% by weight) with "the remainder being various vehicles or carriers and. processing aids helpful for forming the desired dosing form.

Liquid forms suitable for oral administration may include a suitable aqueous or nonaqueous vehicle with buffers, suspending and dispensing agents, colorants, flavors and the like. Solid forms may include, for example, any of the following ingredients, or compounds of a similar nature: a binder such as microcαystalline cellulose, gum tragacanth or gelatine; an excipient such as starch or lactose, a disintegrating agent such as alginic acid, Primogel, or corn starch; a lubricant such as magnesium stearate; a glidant such as colloidal silicon dio¬ xide; a sweetening agent such as sucrose or saccharin; or a flavoring agent such as pepper¬ mint, methyl salicylate, or orange flavoring.

Injectable compositions are typically based upon injectable sterile saline or phosphate-buf¬ fered saline or other injectable carriers known in the art. As above mentioned, carboxylic acids of formula (I) in such compositions is typically a minor component, frequently ranging between 0.05 to 10% by weight with the remainder being the injectable carrier and the like.

The above described components for orally administered or injectable compositions are merely representative. Further materials as well as processing techniques and the like are . set out in Part 5 ofRemington 's Pharmaceutical Sciences, 20th Edition, 2000, Marck Publishing Company, Easton, Pennsylvania, which is incorporated herein be reference.

The compounds of this invention can also be administered in sustained release forms or from sustained release drug delivery systems. A description of representative sustained release materials can also be found in the incorporated materials in Remington 's Pharma- ceutical Sciences.

In the following the present invention shall be illustrated by means of some .examples, which are not construed to be viewed as limiting the scope of the invention. The following abbreviations are hereinafter used in the accompanying examples: hr(s) (hour(s)), g (gram), mg (milligram), mmol (millimole) mol (mole), m.p. (melting point), eq (equivalents), mL (milliliter), μL (microliters), ESI (Electro-spray ionization), L (liters), EtOAc (Ethyl acetate), Boc (tert-Butoxycarbonyl), CDCl3 (deuterated chloroform), CD3OD (Deuterated methanol), CH3CN (Acetonitrile), DBU (Diazabicyclo [5.4.0]undec-7~ene), DCC (Dicyclόhexyl carbodiimide), DCM (Dichloromethane), DIC (Diisopropyl carbodiimide), DIEA (Diisopropylethylamine), DMAP (4- Dimethylaminopyridine), DMF (Dimethyl- formamide), DMSO (Dimethylsulfoxide), DMSO-d6 (Deuterated dimethylsulfoxide), HOBt (l-Hydroxy-6-trifluoromethyl benzotriazole), EDC (l-(3-Dimethyl-amino-propyl)-3- ethylcarbodiimide), DCE (1,2-dichloroethane), c-Hex (Cyclohexane), Et2O (Diethyl ether), EtOH (Ethanol), Fmoc (9-Fluorenylmethoxycarbonyl), i-PrOH (2-propanol), MeOH (Methanol), min. (minute), MTBE (Methyl tert-butyl ether), NMM (N-methyl-morpholine), MW (micro-wave), Pd/C (palladium on carbon), PPh3 (triphenylphosphine), PetEther (Petroleum ether), rt (room temperature), PyBOP® (Benzotria~zole-l-yl-oxy-tris- pyrrolidino-phosphonium hexafluorophosphate), Rt (retentioo time), SPE (solid phase extraction), TBTU (2-(l-H-benzotriazole-l-yl)-l,l,3,3-tetrair-Lethyluromium tetrafluoroborate), TEA (Trie%lamine), TFA (Trifluoroacetic acid), TFAA (Trifluoro- acetic acid anhydride), THF (Tetrahydrofuran).

The HPLC data provided in the examples described below were obtained as followed. HPLC: Waters Symmetry Cg column 50 mm x 4.6 mm; UV detection (maxplot); flow: 2 rnlVmin; Conditions: 8 min gradient from 0.1 % TFA in H2O to 0.07 % TFA in CH3CN. The MS data provided in the examples described below were obtained as followed: Mass spectrum: LC/MS Waters ZMD (ESI). The NMR data provid-ed in the examples described below were obtained as followed: 1H-NMR: BrukerDPX-30OMHz.

Examples

Example 1 : 5-ri4-fr4-butylphenyl)ethynyl1benzyl}fhexyl)amino1-2-hvdroxy benzoic acid. N-methyl-D-glucamine (i.e. l-deoxy-l-(rnethylarQino)glucitol') salt

Step a) Formation of2,2-dimethyl-6-nitro-4H-l,3-benzodioxin-4-one

A mixture of 2-hydroxy-5-nitrobenzoic acid (Aldrich, 50.0 g^ 0.27 mol), acetone (40 mL, 0.54 mol) and trifluoroacetic anhydride (TFAA) (Aldrich, 1OO mL, 0.71 mol) in trifluoroacetic acid (TFA) (Aldrich, 300 mL) was heated at reflux. After 1 hour, an additional amount of acetone (60 mL, 0.82 mol) was added and the resulting reaction mixture was heated under reflux for an additional 48 hrs. The reaction mixture was concentrated under reduced pressure. The residual brown solid was dissolved in DCM (800 mL) and washed with a mixture of an aqueous saturated solution ofNaHCCb (400 mL) and water (400 mL). The aqueous layer was extracted with DCM (2x400 inL). The combined organic layers were dried over MgSO4 and the solvent was removed under reduced pressure. The residual brown oil was taken up in cold pentane (300 mLJ) at O0C and a yellow solid precipitated off. Filtration and washing with pentane gave 53.8 g (88%) of the title compound as a yellow solid. HPLC, Rt: 2.9 min (purity: 99.8%). 1IH NMR (CDCl3) δ: 8.88 (d, J=2.8 Hz3 IH), 8.44 (dd, J=9.03 2.8 Hz, IH), 7.14 (d, J=9.0 Hz, IH), 1.80 (s, 6H).

Step b) Formation of6-amino-2,2-dimethyl-4H-l,3-benzodioxin-4~one

To a solution of 6~nitro~2,2-dimethyl-4H-l,3-benzodioxin-4-one (4.1 gO in EtOH (30 mL) was added Pd/C (1.947 g) under nitrogen atmosphere. Hydrogenation was performed for 12 hrs at rt using 10 bars of H2. The reaction mixture was filtered through a bed of celite, washed with EtOH and THF. The filtrates were concentrated under vacπuum to give the title compound as a pale yellow solid (3.5 g, 98%). 1H NMR (CDCl3) δ 7.7L (d, J=8.7 Hz, IH), 7.15 (d, J=2.6 Hz, IH), 6.83 (dd, J=8.7 Hz, 2.6 Hz, IH), 3.44 (brs, 2H), 2.63 (s, 6H).

Step c) Formation of6-({4-[(4-butylphenyl)ethynyl]benzyl}amino)-2,2-*ftmethyl- 4H-l,3- ben∑odioxin~4-one

A solution of 4-[(4-butylphenyl)ethynyl]benzaldehyde (5.43 g, 20.7 mmol, intermediate which may be obtained according to methods disclosed in EP03103780.7) and 6-axnino- 2,2-dimethyl-4H-l,3-benzodioxin-4-one (4.00 g, 20.7 mmol) in toluene (60 niL) v^as heated at reflux for 3.5 hours with azeotropic removal of water. Then the mixture was cooled down to 00C and anhydrous THF (60 mL) and MeOH (60 mL) were added- NaBH4 (1.65 g, 43.6 mmol) was added portionwise and the reaction mixture was stirred for 30 min at O0C and 45 min at rt. The reaction mixture was poured into a saturated solution of NaCl and extracted with Et2θ. The combined organic layers were dried over MgSθ4 and the solvents were removed under reduced pressure to give the crude product. Precipitation from a mixture of EtOAcΛVTeOH gave 7.1 g (75%) of the title compound as a yellow pOΛvder. HPLC, Rt: 5.4 min (purity: 97.5%). 1HNMR (CDCl3) δ: 7.45 (d, J=8.3 Hz, 2H), 7.39 (d, J=8.3 Hz, 2H), 7.28 (d, J=8.3 Hz, 2H), 7.15-7.06 (m, 3H), 6.80-6.70 (m, 2H), 4.20 (s, 2H), 4.04 (tars, IH), 2.57 (t, J=7.7 Hz, 2H), 1.65 (s, 6H), 1.61-1.49 (m, 2H), 1.37-1.23 (no, 2H), 0.88 (t, J=7.3 Hz, 3H).

Step d) Formation of6-[{4-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amino]-2,2-ώm ethyl-4H- 1, 3-benzodioxin-4-one

To a solution of 6-({4-[(4-butylphenyl)ethynyl]benzyl}amino)-2,2-dimethyl-4H- l:r3- benzodioxin-4-one (4.00 g, 9.1 mmol) in anhydrous DCE (60 mL) were added hexanal (Aldrich, 1.80 mL, 14.6 mmol) and sodium triacetoxyborohydride (6.17 g, 29.1 moaol). The resulting mixture was stirred at 700C overnight. Then the reaction mixture was poured into water (60 mL) and extracted with DCM (2x60 mL). The combined organic layers were dried over MgSO4 and the solvents were removed under reduced pressure to give a. yellow oil. Purification by flash chromatography on silicagel (c-Hex/EtOAc (9/1)) gave 4.41 g (92%) of the title compound as a yellow oil. HPLC, Rt: 6.2 min (purity: 100%). LC/MS, M+(ESI): 524.1. 1H NMR (CDCl3) δ: 7.48 (d, J=8.3 Hz, 2H), 7.44 (d, J=8.3 Hz5 2H), 7.25 (d, J=3.0 Hz, IH), 7.20 (d, J=8.3 Hz, 2H), 7.16 (d, J=8.3 Hz, 2H), 6.86 (dd, J=9.0, 3.0 Hz, IH), 6.79 (d, J=9.0 Hz, IH), 4.51 (s, 2H), 3.37 (t, J=7.7 Hz, 2H), 2.63 (t, J=7.7 Hz, 2H), 1.71 (s, 6H), 1.61 (m, 4H), 1.40-1.25 (m, 8H), 0.94 (t, J=7.3 Hz, 3H), 0.90 (t, J=6,7 Hz, 3H). •

Step e) Formation of methyl 5-[{4-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amino] -2- hydroxybenzoate

To a solution of 6-[{4-[(4-butylphenyl)e1_iynyl]berizyl}(^exyl)amino]-2,2-dim ethyl-4H- l,3-benzodioxin-4-one (4.41 g, 8.4 mmol) in MeOH (500 mL) and water (30 mL) was added an aqueous solution of NaOH (7.0 mL, 5N). The reaction mixture was stirred at rt for 2 hrs and a yellow powder precipitated out progressively. Filtration and washing with water (2x) gave the title compound as a yellow powder. HPLC, Rt: 5.3 min (purity: 98.7%). LC/MS, M+(ESI): 498.3. 1H NMR (CDCl3) δ: 10.16 (s, IH), 7.45 (m, 4H), 7.19 (m, 5H), 6.94 (dd, J=9.0, 3.0 Hz, IH), 6.86 (d, J=9.0 Hz, IH), 4.43 (s, 2H), 3.92 (s, 3H), 3.28 (t, J=7.5 Hz, 2H), 2.63 (t, J=7.5 Hz, 2H), 1.60 (m, 4H), 1.30 (m, 8H), 0.92 (m, 6H).

Step J) Formation of5-[{4-[(4~butylphenyl)ethynyl]benzyl}(hexyl)amino]-2-hydro xybetizoic acid To a solution of methyl 5-[{4-[(4-bτitylplienyl)ethynyl]benzyl}(hexyl)amino]-2-hydr o}cy- benzoate in MeOH (400 niL) and water (40 mL) was added an aqueous solution of NaOH (6.0 mL, 5N). The reaction mixture was stirred at 600C overnight. Then an aqueous solution of HCl (10 mL, 5N) was added and the solvents were removed under reduced pressure. The residue was taken up in water and extracted with Et2θ (3x). The combined organic layers were dried over MgSO4 and the solvent was removed under reduced pressure to give a yellow solid. Precipitation from a DCM/MeOH mixture gave 2.17 g (53%, step e and f) of the title compound as a beige powder. HPLC, Rt: 4.8 min (purity: 99.7%). LCMS, M+(ESI): 484.4, MXESI): 482.2. 1H NMR (CDCI3/CD3OD (15/1)) δ: 7.39 (m, 4H), 7.18-7.09 (m, 5H), 6.87 (dd, J=9.0, 3.0 Hz, IH), 6.78 (d, J=9.0 Hz, IH), 4.38 (s, 2H), 3 ,22 (t, J=7.5 Hz, 2H), 2.57 (t, J=7.8 Hz3 2H), 1.55 (m, 4H), 1.34-1.21 (m, 8H), 0.90-0.75 (no, 6H).

Step g) Formation of5-[{4-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amino]-2-hydro xy- benzoic acid, N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol) salt To a solution of the 5-[{4-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amino]-2-hydroxy - benzoic acid (1650 mg, 3.41 mmol) in freshly distilled THF (20 mL) was added a solution of N-methyl-D-glucamine (666 mg) in water (4 mL). Water (200 mL) was added and the resulting solution was lyophilized to give 1.93 g (81%) of the title compound as a pale yellow powder. HPLC, Rt: 4.8 min (purity: 98.8%). LC/MS, M+(ESI): 484.0, M-(ESI): 482.0.

Example 2: 5-r{4-[(4-butylphenvDethynyllbenzvπ(hexyl)aminol-2-hvdroxyb enzoic acid, hydrochloride salt

To a solution of 6-[{4-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amino]-2,2-dimet hyl-4H~ l,3-benzodioxin-4-one (240 mg, 8.4 mmol) in EtOH (15 mL) and water (1 mL) was added an aqueous solution of NaOH (0.5 mL, 5N). The reaction mixture was heated under reflux for 2 hrs. Then an aqueous solution of HCl (2 mL, 5N) was added and the solvents were evaporated under reduced pressure to give a brown oil. The oil was taken up with water (10 mL) and extracted with Et2θ (2x10 mL). The combined organic layers were dried over MgSO4 and the volume of solvent was half reduced under reduced pressure. Then a solution of HCl in Et2O (2 mL, IM) was added and a beige solid precipitated out. The solid was filtrated off, washed with Et2θ and dried under vacuum to give 155 mg (65%) of the title compound as a beige powder. HPLC, Rt: 4.7 min (purity: 99.7%). LC/MS, MXESI): 482.3. 1H NMR (CD3OD) δ: 7.87 (d, J=3.0 Hz, IH), 7.61 (dd, J=9.0, 3.0 Hz, IH), 7.49 (d, J=8.3 Hz, 2H), 7.44 (d, J=8.3 Hz, 2H), 7.30 (d, J=8.3 Hz, 2H), 7.24 (d, J=8.3 Hz, 2H), 7.13 (d, J=9.0 Hz, IH)5 4.82 (s, 2H), 3.77 (t, J=8.1 Hz, 2H), 2.67 (t, J=7.5 Hz, 2H), 1.63 (m, 4H), 1.45-1.33 (m, 8H), 0.96 (m, 6H). Example 3: 5-f|4-[f4-butylphenyl'>etfavnyl1benzyl>fliexyπamino1- 2-hvdroxybenzoic acid, lysine salt

To a solution of the 5-[{4-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amiαo]-2-hydrox y- benzoic acid (90 mg, 0.19 mmol) in freshly distilled THF (1 mL) was added a solution of L-lysine (Aldrich, 27 mg) in water (1 mL). Water (20 mL) was added and the resulting solution was lyophilized to give 87 mg (74%) of the title compound as a pale yellow powder. HPLC, Rt: 4.9 min (purity: 99.4%). LC/MS, M+(ESI): 483.7, JVT(ESI): 482.1. Example 4: 5-((4-r(4-butylphenyl')ethynyl]benzyl} {[(EV2-phenylvinynsulfonyl}aminoV 2-hvdroxybenzoic acid

Step a) Formation of(E)-N-{4-[(4-butylphenyl)ethynyl]benzyl}-N-(2,2-dimethyl-4 -oxo-4H- l,3-benzodioxin-6-yl)-2-phenylethylenesulfonamide

A solution of 6-({4-[(4-butylphenyl)ethynyl]benzyl}amino)-252-dimethyl-4H- l ,3- benzodioxin-4-one (33mg, 0.08 mmol) , β-styrene sulfonyl chloride (Aldrich, 18 mg, 0.09 mmol) and TEA (26 μl, 0.19 mmol) in DCM (2 mL) was stirred at rt overnight. Trisamine resin (0.5 eq, Novabiochem, 3.5 mmol/g) was added and the mixture was stirred at rt for an additional 2 hrs. It was then filtrated and the filtrate was washed twice with an aqueous saturated solution of ammonium chloride and with brine. It was dried over MgSO4, filtrated and concentrated to give 24 mg (53%) of the title compound. HPLC, Rt: 5.90 min (purity: 88.9%). 1H NMR (CDCl3) δ: 7.84 (d, J =2.4 Hz5 IH), 7.36-7.54 (m, 1 IH), 7.23 (d, J =8.3 Hz, 2H), 7.13 (d, J =8.3 Hz, 2H), 6.85 (d, J =8.7 Hz, IH), 6.78 (d, J =8.7 Hz, IH), 4.76 (s, 2H), 2.59 (t, J=7.9 Hz, 2H), 1.68 (s, 6H), 1.57 (m, 2H), 1.32 (m, 2H), 0.90 (t, J =13 Hz, 3H).

Step b) Formation of5-({4-[(4-butylphenyl)ethynyl]benzyl}{[(E)-2-phenylvinyl]s ulfonyl}~ amino)-2-hydroxybenzoic acid

To a solution of (E)-N-{4-[(4-bu1ylphenyl)emynyl]benzyl}-N-(2,2-dimethyl-4-ox o-4H-l,3- benzodioxin-6-yl)-2-phenylethylenesulfonamide (24mg, 0.04 mmol) in EtOH (ImL) and THF (1 mL) was added an aqueous solution of NaOH (0.5 mL, 5N) and the resulting mixture was heated at 7O0C for 2 hrs. Solvents were concentrated under reduced pressure. The residue was taken up in DCM and washed with an aqueous saturated solution of NH4CI and brine. The combined organic layers were dried over MgSO4, filtrated and the solvents were removed under reduced pressure. The crude (29 mg) was purified on a SPE column (Sorbent MBb3 Isolute® Ig, 0.71 mmol/g) as follows: the column was equilibrated with DCM (2x 10 mL) and the crude product (diluted in 1 mL DCM) was poured onto the column. The column was washed with DCM (2x 5 mL) then with dioxane (2x 5 mL) and the title compound was finally eluted with a solution of HCl in dioxane (2x 2 mL, 2N). Evaporation of the HCl-containing fractions under vacuum gave the title compound (8 mg). HPLC5 Rt: 5.54 min (purity: 66.5%). M+(ESI): 564.2.

Example 5: 4-({ {4-[(4-butylphenyl)ethvnyl]benzyl} [2-(4-chlorophenvDethyl]amino}- methvDbenzoic acid, hydrochloride salt

Step a) Formation of{4-[(4-butylphenyl)ethynyl]benzyl}[2-(4-chlorophenyl)ethyl ]amine

A solution of4-[(4-butylphenyl)ethynyl]benzaldehyde (2.62 g, 10.0 mmol, intermediate which may be obtained according to methods disclosed in EP03103780.7) and 2-(4- chloroρhenyl)ethylamine (Aldrich, 1.56 g, 10 mmol) was heated at reflux irα toluene (50 mL) for 12 hrs with azeotropic removal of water. The mixture was evaporated under vacuum and the residue was taken up in MeOH (60 mL) and chilled at 00C. NaBH4 (567 mg, 15.0 mmol) was added portionwise and the reaction mixture was stirred for 30 min at 00C and 3 hrs at rt. The reaction mixture was poured into a saturated solution of NaCl and extracted with Et2θ. The combined organic layers were dried over MgSO4 and the solvents were removed under reduced pressure to give the crude product. Purification by chromato¬ graphy on silicagel (EtOAc/c-hex 30/70) gave 2.96 g (54%) of the title compound as a white solid. HPLC, Rt: 5.0 min (purity: 99.9%).

Step b) Formation ofmethyl 4-({{4-[(4-butyϊphenyl)ethynyl]benzyl}[2-(4-chlorophenyl)- ethyl]amino}methyl)benzoate To a solution of {4-[(4-butylphenyl)ethynyl]benzyl} [2-(4-chlorophenyl)ethyl]amine (2.85 g, 7.1 mmol) and methyl 4-formylbenzoate (1.16 g, 7.1 tnmol) in DCE (24 mL) was added at once sodium triacetoxyborohydri.de (2.25 g, 10.6 mmol) and the resulting reaction mixture was stirred 12 hrs at it. The reaction mixture was poured into water and extracted . with DCM. The combined organic layers were dried over MgSO4 and the solvents were removed under reduced pressure to give the crude product. Purification by chromatography on silicagel (EtOAc/c-hex (5/95)) gave 2.8 g (73%) of the title compound-as a white solid. HPLC, Rt: 5:0 min (purity: 99.9%). 1HNMR (CDCl3) δ: 7.98 (d, J=8.3 Hz5 2H), 7.51-7.43. (m, 4H), 7.36 (d, J=8.3 Hz, 2H), 7.29-7.15 (m, 6H), 7.00 (d, J=8.3 Hz, 2H), 3.94 (s, 3H), 3.68 (s, 2H), 3.64 (s, 2H)5 2.83-2.59 (m, 6H), 1.69-1.55 (m, 2H), 1.44-1.30 (m, 2H)5 0.95 . (J=7.2 Hz5 3H).

Step c) Formation of4-({{4-[(4-butylphenyl)ethynyl]benzyl}[2-(4-chlorophenyl)e thyl]- ammo}methyl)benzoic acid, hydrochloride salt To a solution of methyl 4-({{4-[(4-butylphenyl)ethynyl]ben2yl}[2-(4-chlorophenyl)- ethyl]amino}methyl)benzoate (980 mg, 1.78 mmol) in MeOH (15 mL) was added- an aqueous solution of NaOH (4.5 mL, IN) and the resulting mixture was stirred at rt for 12 hrs. An aqueous solution of HCl (IN) was added and the resulting mixture was extracted with Et2θ. The combined organic layers were dried over MgSO4 and evaporated to give 929 mg of 4-({{4-[(4-butylphenyl)ethynyl]beri2yl}[2-(4-chlorophenyl)et hyl]amino}- . methyl)benzoic acid as a colorless oil. This product was dissolved in Et^O (30 mL) and a solution of HCl in dioxane (2 mL, 4N) was added. The precipitate was filtered, washed . with Et2θ and dried under vacuum to give 985 mg (97%) of the title compound as a white powder. HPLC, Rt: 4.7 min (purity: 98.9%). M-(ESI): 534.3; M+(ESI): 536,2. 1HNMR (DMSO-de) δ: 13.4 (hrs, IH), 11.3 (brs, IH), 8.35-7.28 (m, 16H), 4.82-4.45 (m, 2H), 3.96- 4.58 (m, 6H), 2.81 (t, J=7.9 Hz, 2H)5 1.84-1.68 (m, 2H), 1.60-1.41 (m, 2H), 1.10 (t, J=7.2 Hz, 3H).

Example 6 : {4-rr([T4-tert-butvtohenyl)aminolcarbonylH4-[f4-butylphenvBe thvnyll- benzyl)- amino)methyl]phenoxy}acetic acid

Step a) Formation of methyl [4-[(E)-hydroxyimino)methyl]phenoxy] acetate A solution ofhydroxylamine hydrochloride (54 g) and sodium acetate (64 g) in water (500 mL) was added drop-wise to a solution of methyl (4-formylphenoxy)acetate (100 g, .0.515 mol, intermediate which may be obtained according to methods described in Bioorg. Med. ChemXett., 2001,11(19), 2589-92) in methanol (500 mL) at 0-50C. The reaction mixture was stirred at rt for 6 hrs, then diluted with water and filtrated. The solid obtained was washed with water and dried under vacuum to give the title compound (80 g, 74%).

Step b) Formation of methyl- [4-(aminomethyl)phenoxy]acetate, acetic acidsalt-

To a solution of methyl [4-[(i^4iydroxyimmo)meth.yl]pb.enoxy] acetate (30 g, 0.14 mol) in MeOH (65OmL) was added glacial acetic acid (6.8g). The solution was degassed withN2 for 30 min before the addition of Pd/C (10%, 3 g) and hydrogenated for 12hrs under 2 bars of H2. The reaction mixture was concentrated under vacuum. The crude product was taken up with EtOAc (500 mL). A solid precipitated out which was filtered off and dried under vacuum to give 29 g (81%) of the title compound as a white solid. 1H NMR (DMSO-ώfc) δ: 7.28 (d, J =8.5 Hz, 2H), 6.88 (d, J =8.6 Hz, 2H), 5.76 (brs, 2H), 4.77 (s, 2H), 3.73 (s, 2H), 3.68 (s, 3H), 1.81 (s, 3H).

Step c) Formation of Methyl {4-[({4-[(4-bιιtylphenyl)ethynyl]benzyl}amino)methyl]- phenoxy}acetate The title compound was prepared following procedure described in Example 1, step c) from methyl [4-(aminomethyl)phenoxy]acetate, acetic acid salt (2.0 g, 7.87 mmol) and 4-[(4- butylphenyl)ethynyl]benzaldehyde (2.06 g, 7.87 mmol, intermediate which may be obtained according to methods disclosed in EP03103780.7). The crude (2.76 g) was ' purified by flash chromatography (EtOAc/c-Hex (1/4)) to give 1.26 g (36%) of the title compound as a yellow solid. HPLC, Rt: 4.16min (purity: 94.9%). LC/MS, M+(ESI): 442.3. 1H NMR (CDCl3) δ: 0.91 (t, J =7.2 Hz, 3H), 1.34 (qt, J =7.6 Hz3 2H), 1.58 (qt, J =7.7 Hz5 2H), 1.83 (brs, IH), 2.59 (t, J =7.7 Hz, 2H), 3.72 (s, 2H), 3.78 (s, 2H), 3.79 (s, 3H), 4.60 (s, 2H)5 6.86 (d, J =8.7 Hz, 2H), 7.13 (d, J =8.3 Hz, 2H), 7.25 (d, J =8.7 Hz, 2H)5 7.29 (d, J =8.3 Hz, 2H)5 7.42 (d, J =8.3 Hz, 2H), 7.46 (d, J =8.1 Hz, 2H).

Step d) Formation of Methyl {4-[({[(4-tert-butylphenyl)amino]carbonyl}{4-[(4- butylphenyl)ethynyl]benzyl}amino)methyl]phenoxy}acetate

A solution of methyl {4-[({4-[(4-butylphenyl)ethynyl]benzyl}amino)methyl]phehoxy} acetate (45 mg, 0.10 mmol) and 4-tert-butylρhenylisocyanate (Aldrich, 27 mg, 0.15 mmol) in DCM (2 mL) was stirred at rt overnight in presence of a morpholine resin (1.5 eq., Novabiochem HL5 3.8 mmol/g). Trisamine resin (1.2 eq, Novabiochem, 3.5 xamoVg) was then added and the mixture was stirred at rt for an additional 2 hrs. The reaction mixture was then filtrated and the solvent was removed under reduced pressure to give quantitatively the title compound. HPLC, Rt: 5.97 min (purity: 96.3%). M+(ESI): 619.6, M" (ESI): 616.9.

Step e) Formation of{4-[({[(4-tert-butylphenyl)amino]carbonyl}{4-[(4-butylphen yl)- . ethynyl]benzyl}amino)methyl]phenoxy} acetic acid

To a solution ofmethyl {4-[({[(4-/ert-butylphenyl)amino]carbonyl} {4-[(4-butylphenyl)- ethynyl]benzyl}amino)methyl]phenoxy} acetate (70 mg, 0.1 1 mmol) in MeGH (1 mL) and THF (1 mL) was added an aqueous solution of NaOH (0.5 rnL, 5N) and the resulting mixture was stirred at rt for 3 hrs. Then the solvents were removed under reduced pressure. The residue was taken up in EtOAc and washed with an aqueous solution of HCl (IN) and brine. The organic layer was dried over MgSO4 and the solvent was removed to give 46 mg (67%) of the title compound. HPLC, Rt: 5.61 min (purity: 97.4%). 1H NMR (CD3OD) δ: 7.48 (d, J =8.3 Hz, 2H), 7.40 (d, J =7.5 Hz, 2H), 7.18-7.33 (m, 10H), 6.93 (d, J =8.7 Hz, 2H), 4.66 (s, 2H)54.66 (s, 2H), 4.54 (s, 2H), 2.63 (t, J =7.5 Hz, 2H), 1.60 (m, 2H), 1.37 (m, 2H), 1.30 (s, 9H), 0.95 (t, J=7.2 Hz, 3H). M+(ESI): 603.4, MXESI): 601.3.

Example 7: 5-|"(4-[(4-butylphenyl)ethynynbenzyl}(3-phenylpropyDaminol-2 -hvdroxy- benzoic acid, hydrochloride salt Step a) Formation of6-[{4-[(4-butylphenyl)ethynyl]benzyl}(3-phenylpropyl)amino ]-2,2- dimethyl-4H-l, 3-benzodioxin-4-one

To a solution of 6-({4-[(4-butylphenyl)ethynyl]benzyl}amino)-2,2-dimethyl-:4H -l,3- benzodioxin-4-one (150 mg, 0.34 mmol) in anhydrous DCE (3 inL) were added 3- phenylpropiofialdehyde (Aldrich, 75 μL, 0.51 mmol) and sodium triacetoxyborohydride (110 mg, 0.51 mmol). The reaction mixture was stirred at rt for 24 hrs. The solvent was removed under reduced pressure. The residue was taken up with an aqueous solution of NaOH (2 mL) and extracted with Et2O (6 ml). The organic layer was dried over Na2SO4 and the solvent was removed under reduced pressure. Purification by flash chromatography on silicagel (pentane/DCM (2/3)) gave 147 mg (77%) of the title compound as a yellow oil. HPLC, Rt: 6.3 min (purity: 99.1%). 1HNMR (CDCl3) δ: 7.45 (m, 4H), 7.32-7.15 (m, 10H), 6.91 (m, IH), 6.80 (m, IH), 4.49 (s, 2H), 3.42 (t, J=7.4 Hz, 2H), 2.65 (m, 4H), 1.71 (s, 6H), 1.61 (m, 2H), 1.37 (m, 2H), 0.94 (t, J=7.2 Hz, 3H)

Step b) Formation of5-[{4-[(4-butylphenyl)ethynyl]benzyl}(3-phenylpropyl)amino ]-2- hydroxybenzoic acid, hydrochloride salt To a solution of 6-[{4-[(4-butylphenyl)ethynyl]ben2yl}(3-phenylpropyl)amino]- 2,2- dimethyl-4H-l,3-benzodioxin-4-one (147 mg, 0.26 mmol) in MeOH/THF (9 ml, (2/1)) was added an aqueous solution of NaOH (0.3 mL, 5N). The reaction mixture was stirred at rt for 48 hrs. Then a solution of HCl in MeOH (2.5 mL, 1.25M) was added and the solvents -were removed under reduced pressure. The residue was taken up with water (5 mL), extracted with Et2θ (2x5 mL) and the combined organic layers were dried over Na2SO4. The solvent was removed under reduced pressure. The residue was dissolved in a solution of HCl in Et2θ (2 mL, IN). Evaporation of the solvent gave 60 mg (32%) of the title compound as a brown foam. HPLC, Rt: 4.8 min (purity: 78.1%). LC/MS, M+(ESI): 518.4, M'(ESI): 51 €.3.

Example 8: ^4-[r{4-[(4-butylphenyπethvnyllbenzyl} (r(EV2-phenylvinyl1sulfonyl}- amino) methvUphenoxy}acetic acid

Step a) Formation of methyl {4-[({4-[(4-butylphenyl)ethynyl] 'benzyl} {[(E)-2-phenylviny I]- sulfonyl}amino)methyl]phenoxy}acetate

A solution of methyl {4-[({4-[(4-butylρhenyl)ethynyl]benzyl}amino)methyl]phenoxy }- acetate (42 mg, 0.10 mmol) and β-styrene sulfonyl chloride (Aldrich, 23 mg, 0.11 mmol) in DCM (2 mL) was stirred at rt overnight in presence of a morpholine resin (1.5 eq., Novabiochem HL, 3.8 mmol/g) (1.5 eq). Trisamine resin (1 eq, Novabiochem, 3.5 mmol/g) was then added and the mixture stirred at rt for an additional 2 hrs. The reaction mixture was then filtrated and (he solvent was removed under reduced pressure to give 55 mg (95%) of the title compound. HPLC, Rt: 5.8 min (purity: 83%). M+(ESI): 608.2. Step b) Formation of{4-[({4-[(4-butylphenyZJethynyl]benzyl}{[(E)-2~phenylvinyl ]sulfonyl}-- amino)methyl]phenoxy} acetic acid

The title compound was prepared following the procedure described in example 6, step f) from methyl {4-[({4-[(4-butylphenyl)ethynyl]benzyl} {[(E)-2-phenylyinyl]sulfonyl}- amino)methyl]phenoxy}acetate (70 mg, 0.12 mmol). The crude was purified by preparative HPLC using a supelcosil ABZ+ column. HPLC, Rt: 5.48 min (purity: 89.90Zo)- M+(ESI): 594.18, MXESI): 592.09.

Example 9: 5-r(4-F('4-bu1ylphenvBemynyllbenzrv'l}ri-naphthylmethvπarni no]-2- hvdroxybenzoic acid, hydrochloride salt

Step a) Formation of6-[{4-[(4-butylphenyl)ethynyl]benzyl}(l-naphthylmethyl)ami no]-2,2- dimethyl-4H-l,3-benzodioxin-4-one

To a solution of 6-({4-[(4-butylphenyl)ethyQyl]benzyl}amino)-2,2-dimethyl-4H- l,3- benzodioxin-4-one (150 mg, 0.34 mmol) in anhydrous DCE (3 mL) were added 1- naphtaldehyde (Fluka, 70 μL, 0.51 mmol) and. sodium triacetoxyborohydride (110 mg, 0.51 mmol). The reaction mixture was stirred at it for 72 hrs. The solvent was removed under reduced pressure. The residue was taken up with an aqueotis solution of NaOH (2 mL, IN) and extracted with Et2θ (6 ml). The organic layer was dried over Na2SO4 and the solvent was removed under reduced pressure. Purification by flash, chromatography on silicagel (pentane/DCM (2/3)) gave 72 mg (36%) of the title compound as a yellow oil. HPLC, Rt: 6.2 min (purity: 100%). 1H NMR (CDCl3) δ: 7.91-7.80 (πu, 3H), 7.54-7.27 (m, 1 IH), 7.17 (d, J=7.9 Hz, 2H), 7.08 (m, IH), 6.78 (d, J=8.7 Hz, IH), 5.20 (s, 2H), 4.70 (s, 2H), 2.63 (t, J=7.7 Hz, 2H), 1.69 (s, 6H), 1.61 (m, 2H), 1.37 (m, 2H), 0-94 (t, J=7.4 Hz, 3H).

Step b) Formation of5-[{4-[(4-butylphenyl)ethynyl]benzylJ-(l-naphihylmethyl)am ino]-2- hydroxybenzoic acid, hydrochloride salt

To a solution of 6-[{4-[(4-butylphenyl)ethynyl]benzyl}(l-aaphthyhnethyl)amino ]-2,2- dimethyl-4H-l,3-benzodioxin-4-one (72 mg, 0.12 mmol) in dioxane (2 ml) was added a solution of LiOH hydrate (25 mg, 0.60 mmol) in water (0.2 mL). The reaction mixture was heated at 800C for 2 hrs. Then a solution of HCl in dioxane (1 mL, 4N) and a saturated aqueous solution of NaCl (5 mL) were added and extracted with Et2O (2x10 mL). The combined organic layers were dried over Na2SO4 and the solvents were removed under reduced pressure. The residue was dissolved in a solution of HCl in Et2O (1 mL, IN) and DCM (1 mL). Evaporation of the solvent under reduced pressure gave 41 mg (51%) of the title compound as a beige foam. HPLC, Rt: 5.8 min (purity: 82.7%). LCMS5 M+(ESl): 540.3, M-(ESI): 538.3. 1H NMR (CD3OD) δ: 7.97 (m, 3H), -7.72 (m, IH), 7.58-7.41 (m, 11H), 7.23 (d, J=8.3 Hz52H)5 6.92 (d, J=9.0 Hz, IH), 5.42 (s, 2KT), 5.11 (s, 2H), 2.67 (t, J=7.5 Hz, 2H)5 1.64 (m, 2H)5 1.38 (m, 2H)5 0.98 (t, J=7.4 Hz, 3H).

Example 10: [4-r{{4-[(4-butylphenyl)ethynyl]benzyl}[(cyclo3αexylainiao) carbonyl1ammo} methvDphenoxylacetic acid

Step a) Formation of methyl [4-({{4-[(4-butylphenyl)ethynyl]£>enzyl}[(cyclohexylamin o)- carbonyl]amino}methyl)phenoxy] acetate

To a suspension of methyl {4-[({4-[(4-butylρlienyl)ethynyl]be-n2yl}amino)methyl]- phenoxy}acetate hydrochloride (500 mg, 1.05 mmol) in anhydrous DCM (10 ml) was added DIEA (0.2 roL, 1.18 mmol) and cyclohexyl isocyanate C-Aldrich, 0.28 mL, 2.20 s mmol). The reaction mixture was stirred at rt for 15 hrs. Then I?S-trisamine resin (670 mg, Novabiochem, 3.5 mmol/g) was added and the resulting mixture was stirred at rt for 5 additional hrs. The resin was removed by filtration, washed witih DCM and the solvent was evaporated off under reduced pressure. Purification by flash chromatography on silicagel (c-Hex/EtOAc (2/1)) gave 500 mg (84%) of the title compound as a pale yellow oil. HPLC5 o Rt: 5.9 min (purity: 100%). LCZMS5 M+(ESI): 567.4. 1H NMR <DMSO-d6) δ: 7.48 (d, J=8.3 Hz, 2H)5 7.44 (d, J=8.3 Hz5 2H)5 7.24 (d, J=8.3 Hz52H)5 120 (d, J-8.3 Hz, 2H)5 7.11 (d, J=8.6 Hz52H)5 6.88 (d, J=8.6 Hz5 2H), 6.18 (d, J=7.6 Hz5 IH), 4.76 (s, 2H), 4.37 (s, 2H)5 4.31 (s, 2H), 3.68 (s, 3H), 3.48 (m, IH), 2.60 (t, J=7.5 Hz, 2H)5 1.75-1.01 (m, 14H), 0.89 (t, J=7.4 Hz5 3H). Step b) Formation of [4-({{4-[(4-butylphenyl)ethynyl]benzyl}[(cyclohexylamino)c*a rbonyl]- amino} methyl)phenoxy] acetic acid

To a solution of methyl [4-({{4-[(4-butylphenyl)ethynyl]ben2yl}[(cyclohexylarniα.o) - carbonyl]amino}metliyl)phenoxy]acetate (500 mg, 0.88 mmol) in MeOH/THF (8..ml, (1/1)) was added an aqueous solution of NaOH (5 tnL, 5N). The reaction mixture was stirred at rt for 2 hrs. Then the solution was acidified with an aqueous solution of HCl (IN) arid extracted with Et2O (2x). The combined organic layers were dried over MgSO4-aα<l the solvents were removed under reduced pressure to give 459 mg (99%) of the title compound as a pale yellow oil. HPLC, Rt: 5.6 min (purity: 100%). LOMS, M+(ESI): 553.3, IM-(ESI): 551.2. 1HNMR (DMSO-d6) δ: 7.48 (d, J=8.3 Hz, 2H), 7.45 (d, J=8.2 Hz, 2H), 7.22 (m, 4H), 7.02 (d, J=8.5 Hz, 2H), 6.71 (d, J=8.5 Hz, 2H), 6.15 (d, J=8.3 Hz, IH), 4.35 Qs, 2H), 4.27 (s, 2H), 3.98 (s, 2H), 3.48 (m, IH), 2.60 (t, J=7.5 Hz, 2H), 1.80-1.00 (m, 14HQ, 0.89 (t, J=7.4 Hz, 3H).

Example 11 : [4-d-(4-r(4-bu1ylphenvDemvnyr]benzyl}[(cyclohexylarmno'ϊcar bonryl]- amino) methyDphenoxy"|acetic acid. N-methyl-D-glucamine (i.e. 1— deoxy-1- fmethvlamino)glucitol') salt To a solution of the [4-({{4-[(4-butylphenyl)ethynyl]ben2yl}[(cyclohexylamino)car bon.yl]- amino}methyl)phenoxy]acetic acid (219 mg, 0.40 mtnol) in MeOH (7 mL) was added a solution of N-methyl-D-glucamine (78 mg, 0.40 mmol) in water (2 mL). Water (50 mL/) was added and the resulting solution was lyophilized to give 224 mg (76%) of the title compound as a white powder. HPLC, Rt: 5.5 min (purity: 99.8%). LC/MS, M+(ESI): 553.8, M(ESJ): 551.4.

Example 12: [4-( {{4-[r4-butylphenyl)ethynvnbenzyl>["(propylamino)carbonyl l- aminolmethyDphenoxylacetic acid

Step a) Formation of methyl [4-({{4-[(4-butylphenyl)ethynyl]benzyl}[(propylamino)~ carbonyl]amino}methyl)phenoxy]acetate

To a solution of methyl {4-[({4-[(4-butylphenyl)ethynyl]benzyl}amino)methyl]- phenoxy} acetate (36 mg, 0.082 mmol) in anhydrous DCM (2 ml) was added n-propyl isocyanate (Aldrich, 16 μL, 0.17 mmol) and the reaction mixture was stirred atrt for IS hrs. Then PS-trisamine resin (80 mg, Novabiochem, 3.5 mmol/g) was added and the resulting mixture was stirred at rt for 5 additional hrs. Removal of the resin by filtration followed by the evaporation of the solvent gave 47 mg (99%) of the title compound as a yellow oil. HPLC5 Rt: 5.5 min (purity: 96.9%).

Step b) Formation of [4-({{4-[(4-butylph.enyl)ethynyl]bemyl}[(propylamino)carbony l]- amino}methyl)phenoxy] acetic acid

To a solution of methyl [4-({{4-[(4-butylphenyl)ethynyl]benzyl}[(propylamino)carbony l]- ammo}memyl)phenoxy]acetate (47 mg, 0.089 mmol) in MeOH/THF (2 ml, (1/1)) was added an aqueous solution of NaOH (2 mL, IN). The reaction mixture was. stirred at rt for 2 hrs. Then an aqueous solution of HCl (7 mL, IN) was added and extracted with Et2Q (2x7 mL). The combined organic layers were dried over Na∑SQ* and the solvents were removed under reduced pressure to give 42 mg (77%) of the title compound as a yellow oil. HPLC, Rt: 5.1 min (purity: 83.9%). LCMS, M+(ESI): 513.4, M-(ESI): 511.4. 1HNMR (DMSO- d6) δ: 7.49 (d, J=8.3 Hz, 2H), 7.44 (d, J=7.9 Hz, 2H), 7.22 (m, 4H), 7.11 (d, J=8.8 Hz, 2H), 6.86 (d, J=8.8 Hz, 2H), 6.53 (t, J=5.3 Hz, IH), 4.63 (s, 2H), 4.37 (s, 2H), 4.31 (s, 2H), 3.03 (m, 2H), 2.60 (t, J=7.7 Hz, 2H)5 1.58-1.22 (m, 6H), 0.89 (t, J=7.3 Hz3 3H), 0.78 (t, J=7.4 Hz, 3H).

Example 13: {4-[((4-f(4-butylphenyl)ethvnyl]bei]gyl} {[(4-cvanophenyl)amino1carbonyl} aminoimethyliphenoxy)acetic acid Step a) Formation of methyl [4-({{4-[(4-butylphenyϊ)ethynyl]benzyl}[(4-cyanoanilino)- carbonyl]amino}methyl)phenoxy] acetate

To a solution of methyl {4-[({4-[(4-butylphenyl)ethynyl]benzyl}amino)methyl]- phenoxy} acetate (37 mg, 0.084 mmol) in anhydrous DCM (2 ml) was added 4-cyanophenyl isocyanate (Aldrich, 45 mg, 0.31 mmol) and the reaction mixture was stirred at rt for IS hrs. Then PS-trisamine resin (75 mg, Novabiochem, 3.5 mmol/g) and DMF (1 mL) were added and the resulting mixture was stirred at rt for 5 additional hrs. Removal of the resin by filtration followed by evaporation of the solvents gave 65 mg (97%) of the title compound as a pale yellow oil. HPLC, Rt: 5.7 min (purity: 74.1%).

Step b) Formation of{4-[({4-[(4-butylphenyl)ethynyl]benzyl}{[(4-cyanophenyl)am ino]- carbonyl} amino)methyl]phenoxy}acetic acid To a solution of methyl [4-({{4-[(4-butylph.enyl)ethynyl]ben2yl}[(4-cyanoanilino)- carbonyl]amino}methyl)plienoxy]acetate (65 mg) inMeOH/THF (2 ml, (1/1)) was added an aqueous solution of NaOH (2 mL, IN). The reaction mixture was stirred, at it for 3 hrs. Then an aqueous solution of HCl (7 mL, IN) was added and extracted with. Et2O (2x7 mL). The combined organic layers were dried over Na2SO4 and the solvents were removed under reduced pressure to give 48 mg of the title compound as a yellow powden HPLC, Rt: 5.2 min (purity: 75.0%). LC/MS, M+(ESI): 572.4, MXESI): 570.4. 1H NMR (DMSO-d6) δ: 7.70 (m, 5H), 7.51 (d, J=7.9 Hz, 2H), 7.44 (d, J=7.9 Hz, 2H), 7.28-7.16 (m3 6H), 6.89 (d, 1=8.7 Hz, 2H), 4.64 (s, 2H), 4.56 (s, 2H), 4.51 (s, 2H), 2.60 (t, J=7.7 Hz, 2H), 1.55 (m, 2H), 1.28 (m, 2H), 0.89 (t, J=7.2 Hz, 3H).

Example 14: 5-C(4-te^-butylbenzyπ{4-r(4-butylphenyπethynyllbenzyl}ammo )-2- hydroxybenzoic acid, hydrochloride salt

Step a) Formation of6-((4-tert-butylbenzyl){4-[(4-butylphenyl)ethynyl]henzyl}a mino)-2,2- ' dimethyl-4H-l, 3-benzodioxin-4-one

To a solution of 6-({4-[(4-butylphenyl)ethynyl]benzyl}amino)-2,2-dimethyl-4H- l,3- benzodioxin-4-one (150 mg, 0.34 mmol) in anhydrous DCE (3 mL) were added 4-tert- butylbenzaldehyde (Aldrich, 85 μL, 0.51 mmol) and sodium triacetoxyborohydride (110 mg, 0.51 mmol). The reaction mixture was stirred at rt for 72 hrs. The solvent was removed under reduced pressure. The residue was taken up with an aqueous solution of NaOH (2 mL, IN) and extracted with Et2O (6 ml). The organic layer was dried over Na2Sθ4 and the solvent was removed under reduced pressure. Purification by flash chromatography on silicagel (pentane/DCM (2/3)) gave 71 mg (31%) of the title compound as a yellow oil. HPLC, Rt: 6.4 min (purity: 86.3%). 1H NMR (CDCl3) δ: 7.85-6.90 (m, 15H)5 4.62 (bra, 4H), 2.62 (t, 1=1.6 Hz, 2H), 1.70 (s, 6H), 1.61 (m, 2H), 1.33 (m, 2H), 1.30 (s, 9H), 0.93 (t, J=7.2 Hz, 3H).

Step b) Formation of5-((4~tert-bιttylbenzyl){4-[(4-butylphenyl)ethynyl]benzyl }amino)-2- hydroxybenzoic acid, hydrochloride salt

To a solution of 6-((4-tert-butylbenzyl){4-[(4-butylphenyl)ethynyl]beήzyl}am ino)-2,2- dimethyl-4H-l,3-benzodioxin-4-one (71 mg, 0.12 mmol) in dioxane (2 ml) was added a solution of LiOH hydrate (25 mg, 0.60 mmol) in water (0.2 mL). The reaction mixture was. heated at 80°C for 3 hrs. Then a solution of HCl in dioxane (1 mL, 4N) and a saturated aqueous solution of NaCl (5 mL) were added and extracted with Et2θ (2x10 mL). The combined organic layers were dried over Na2SO4and the solvents were removed under reduced pressure. The residue was dissolved in a solution of HCl in Et2θ (I mL, IN) and • DCM (1 mL). Evaporation of the solvent under reduced pressure gave 57 mg (64%) of the title compound as a beige solid. HPLC, Rt: 5.7 min (purity: 79.0%). 1BNMR (CDCl3) δ :. 8.08-6.85 (m, 15H), 4.69 (brs, 4H), 2.61 (t, J=7.7 Hz, 2H), 1.59 (m, 2H), 1.34 (m, 2H), 1.24 (s, 9H), 0.93 (t, J=7.3 Hz, 3H). Example 15: r4-{r{4-rr4-butylphenvDethynyl1benzyl>(2-thienylsulfoαyD aminolmethvπ phenoxy)acetic acid

Step a) Formation of methyl (4-{[{4-[(4-butylphenyl)ethynyl]benτyl}(2-thienylsulfonyl)- amino] methyl}phenoxy)acetate

To a cold solution (00C) of methyl {4-[({4-[(4-butylphenyl)ethynyl]benzyl}amino)methyl]- phenoxy} acetate (40 mg, 0.091 mmol) in anhydrous pyridine (2 ml) was added 2- thiophenesulfonyl chloride (Aldrich, 82 mg, 0.45 mmol) and the reaction mixture was. stirred at O0C for 4 hrs and at rt for an additional 15 hours. The reaction mixture was diluted with an aqueous solution of HCl (IN) and extracted with DCM (3x). The combined organic layers were dried over Na2SO4 and the solvent was removed under reduced pressure to give 30 rag (56%) of the title compound as a yellow oil. HPLC, Rt: 5.9 min (purity: 92.5%). 1H NMR (CDCl3) δ: 7.61 (dd, J=5.3, 1.5 Hz, IH), 7.58 (dd, J=3.8, 1.5 Hz, IH), 7.44 (d, J=8.3 Hz, 2H), 7.39 (d, J=7.9 Hz, 2H), 7.17 (d, J=8.3 Hz, 2H), 7.12 (dd, J=5.3, 3.8 Hz, IH), 7.04 (m, 4H), 6.78 (d, J=8.7 Hz, 2H), 4.61 (s, 2H), 4.33 (s, 2H), 4.30 (s, 2H)3 3.81 (s, 3H), 2.63 (t, J=7.7 Hz, 2H), 1.61 (m, 2H), 1.37 (m, 2H), 0.94 (t, J=7.2 Hz, 3H).

Step b) Formation of (4-{[{4~[(4-butylphenyl)ethynyl]benzyl}(2-thienylsulfonyl)am ino]- . methyl} phenoxy) acetic acid To a solution of methyl (4-{[{4-[(4-butylpheαyl)ethynyl]benzyl}(2-thienylsulfonyl)a mino]- mefhyl}phenoxy)acetate (30 mg, 0.051 mmol) in MeOH/THF (4 ml, (1/1)) was added an aqueous solution of NaOH (2 mL, IN). The reaction mixture was stirred at rt for 2 hrs. Then an aqueous solution of HCl (9 mL, IN) was added and extracted with Et2O (2x10 , mL). The combined organic layers were dried over Na2SO4 and the solvents were removed under reduced pressure to give 30 mg (97%) of the title compound as a green oil. HPLC, Rt: 5.3 min (purity: 95.3%). LCMS, M+(ESI): 574.2, M"(ESI): 572.3. 1H NMR (CDCl3) δ: 7.60 (in, 2H), 7.44 (d, J=8.3 Hz, 2H), 7.38 (d, J=7.9 Hz, 2H), 7.17 (d, J-7.9. Hz, 2H), 7.12 (m, IH), 7.05 (in, 4H), 6.80 (d, J=8.7 Hz5 2H), 4.66 (s, 2H), 4.33 (s, 2H), 4.31 (s, 2H), 2:63 (t, J=7.5 Hz, 2H), 1.61 (m, 2H), 1.37 (m, 2H), 0.94 (t, J=7.4 Hz, 3H).

Example 16: S-rri-^-r^-butylphenyl^ethynyllphenyUpentyπoxyl-Σ-hydroxyb enzoic acid

Step a) Formation ofl-{4-[(4-butylphenyl)ethynyl]phenyl}-l-pentanol

To a cold (-780C) solution of 4-[(4-butylphenyl)ethynyl]benzaldehyde (2.6 g, 10.0 mmol, intermediate which may be obtained according to methods disclosed in EP03103780,7) in anhydrous THF (40 mL) was added dropwise a solution of butylmagnesium chloride in THF (7.5 mL, 15.00 mmol, 2N). The resulting solution was stirred at -78°C for 1 hr, then allowed to reach it and stirred at rt for 5 hrs. An aqueous solution of HCl (10 mL, IN) was added and the resulting mixture was extracted with Et2<D (3x). The combined organic layers were washed with water and brine, dried over MgSO4 and the solvents were removed under reduced pressure to give 2.45 g (76%) of the title compound as a white solid HPLC, Rt: 5.4 min (purity: 100%). 1HNMR (CDCl3) δ: 7.51 (d, J=8.2 Hz, 2H), 7.44 (d, J=8.3 Bz, 2H), 7.32 (d, J=8.2 Hz, 2H), 7.16 (d, J=8.3 Hz, 2H), 4.68 (t, J=7.2 Hz, IH), 2.62 (t, J=7.9 Hz, 2H), 1.88-1.19 (m, 10H), 0.98-0.83 (m, 6H).

Step b) Formation of7-[(l-{4-[(4-butylphenyl)ethynyl]phenyl}pentyl)oxy]-2,2-di methylr 4H-l,3-benzodioxin-4-one

A solution of 7-hydroxy-2,2-dimethyl-4H-l,3-berizodioxin-4-one (363 mg, 1.87 mmol, described inJ. Chem. Soc, JPerkin Trans. 1, 2000, 4265-427 S) and tri-n-butylphosphine (378 mg, 1.87 mmol) in anhydrous toluene (10 mL) was chilled at 00C. To this solution was added N,N,N',N'-te1xarne1hylazodicarboxamide (322 mg, 1.87 mmol) at once and the. resulting reaction mixture was stirred 10 min at 00C. Then l-{4-[(4- butylphenyl)ethynyl]phenyl}-l-pentanol (461.5 mg; 1.44 mmol; 1.0 eq.) was added and the resulting mixture was stirred overnight at rt. The solvent was removed under reduced pressure and the crude mixture was purified by chromatography on silicagel (EtOAc/c-Hex (1/9)) to give 456 mg (64%) of the title compound. HPLC, Rt: 6.2 min (purity: 97.0%). 1H NMR (CDCl3) δ 7.78 (d, J=8.7 Hz, IH), 7.50 (d, J=8.3 Hz, 2H), 7.42 (d, J=8.2 Hz, 2H), 7.29 (d, J=8.3 Hz, 2H), 7.15 (d, J=8.3 Hz, 2H), 6.61 (dd, J=2.4 Hz, J=9.0 Hz, IH), 6.29 (d, J=2.3 Hz, IH), 5.16-5.07 (m, IH), 2.61 (t, J=7.8 Hz, 2H), 2.08-1.93 (m, IH), 1.91-1.75 (m, IH), 1.73-1.24 (m, 14H), 0.98-0.84 (m, 6H).

Step c) Formation of4-[(l-{4-[(4-butylphenyl)ethynyl]phenyl}pentyl)oxy]-2- hydroxybenzoic acid

To a solution of 7-[(l-{4-[(4-butylphenyl)ethynyl]phenyl}pentyl)oxy]-2,2-dime thyl-4H- l,3-benzodioxin-4-one (370 nig, 0.74 mmol) in EtOH (10 niL) was added an aqueous solution ofNaOH (0.75 mL, 3.75 mmol, 5N) and the resulting mixture was stirred overnight at rt. An aqueous solution of HCl (10 mL, IN) was added and the resulting reaction mixture was extracted with Et2θ (3x). The combined organic layers were washed with water and brine, dried over MgSO4 and the solvents were removed under reduced pressure to give 320 mg (94%) of the title compound as a colorless oil. HPLC, Rt: 6.8 min (purity: 99.8%). LC/MS, M"(ESI): 455.3. 1HNMR (CDCl3) δ: 10.5 (s, IH), 9.66 (brs, IH), 7.72 (d, J=9.0 Hz3 IH), 7.48 (d, J=8.3 Hz, 2H), 7.41 (d, J=8.3 Hz, 2H), 7.28 (d, J=8.3 Hz, 2H), 7.15 (d, J=8.3 Hz, 2H), 6.45 (dd, J=2.3 Hz, J=9.0 Hz, IH), 6.35 (d, J=2.3 Hz, IH), 5.14 (t, J=7.8 Hz, IH), 2.61 (t, J=7.9 Hz, 2H), 2.09-1.93 (m, IH), 1.90-1.75 (m, IH), 1.66- 1.19 (m, 8H), 0.96-0.84 (m, 6H).

Example 17: 7-[ri-{4-[(4-butylphenyl)ethynyl]ρhenvUpentyl)oxy]-2.2-dime thyl-4H-1.3- benzodioxin-4-one, N-methyl-D-glucamine (I.e. l-deoxy-l-fmethylamino)- glucitol) salt

To a solution of 7-[(l-{4-[(4-butylphenyl)ethynyl]phenyl}pentyl)oxy]-2,2-diin ethyl-4H- l,3-benzodioxiii-4-one (354 mg, 0.78 mmol) in EtOH (5 mL) was added N-methyl-D- glucamine (151 rag, 0.78 mmol) and the resulting reaction mixture was stirred until complete dissolution. After evaporation of most of the solvent (ca. 80%), water (10 mL) was added to the solution and the resulting mixture was lyophilized to give 461 mg (91%) of the title compound as a white powder. HPLC, Rt: 6.0 min (purity: 99.7%). M-(ESI): 455.2.

Example 18: (4-{ F{4-r(4-butylphenyl)ethynyllbenzyl}fethylsulfonypammo] - methvDphenoxy'tecetic acid

Step a) Formation of methyl (4-{[{4-[(4-butylphenyl)ethynyl]benzyl}(ethylsulfonyl)- amino]methyl}phenoxy)acetate

To a cold solution (00C) of methyl {4-[({4-[(4-butylphenyl)ethynyl]benzyl}amino)- methyljphenoxy} acetate (38 mg, 0.086 mmol) in anhydrous pyridine (2 mL) was added ethanesulfonyl chloride (Fluka, 40 μl, 0.43 mmol) and the reaction mixture was stirred at O0C for 4 hrs and at rt for an additional 15 hours. The reaction mixture was diluted with an aqueous solution of HCl (IN) and extracted with DCM (3x). The combined organic layers were dried over MgSO4 and the solvent was removed under reduced pressure. Purification by flash chromatography on silicagel (cHex/EtOAc) gave 7 mg (15%) of the title compound as a colorless oil. LC/MS, M+(ESI): 534.3 (purity: 94.5%).

Step b) Formation of(4-{[{4-[(4-butylphenyl)ethynyl]benzyl}(ethylsulfonyl)amin o]- methyl}phenoxy)acetic acid

To a solution of methyl (4-{[{4-[(4-butylphenyl)ethynyl]benzyl}(ethylsulfonyl)amino] - methyl}phenoxy)acetate (7 mg, 0.013 mmol) in EtOH (1 mL) was added an aqueous solution of NaOH (20 μL, 5N). The reaction mixture was stirred at 700C for 2 hrs. Then an aqueous solution of HCl (IN) was added and extracted with EtOAc (2x). The combined organic layers were dried over Na2SO4 and the solvents were removed under reduced pressure to give 6 mg (90%) of me title compound as a pale yellow oil. HPLC, Rt: 5.0 min (purity: 75.0%). LC/MS, M+(ESI): 520.5, M-(ESl): 518.3.

Example 19 : 5-{f {4-r(4-butylphenyl)ethynyl1benzyl}fhexyDamino]carbonyl}-2-hv droxy- benzoic acid . N-methyl-D-glucamine (i.e. 1-deoxy-l-fmethylaπiino)- ■ glucitol) salt Step a) Formation of2,2-dimethyl-4-oxo-4H~l,3-benzodioxine-6-carhoxylic acid A suspension of 4-hydroxyisophtalic acid (Aldrich, 5.0 g, 27.5 mmol) in acetone (10 mL), TFA (30 mL) and TFAA (10 mL) was heated at 1000C for 24 hrs. The reaction mixture was concentrated under reduced pressure.- The residue was taken up with an aqueous solution of HCl (100 mL, IN) and extracted with EtOAc (3x200 mL); The combined organic layers were dried over MgSO4 and the solvents were removed under reduced : pressure. The crude compound was recrystallized in Et2O (50 mL) to give 4<67 g (77%) of the title compound as a beige powder. 1HNMR (DMSO-ck) δ : 8.37 (d J=I.9 Hz, IH),

8.19 (dd, J =2.2 and 8.7 Hz, IH), 7.23 (d, J =8.3 Hz, IH), 1.72 (s, 6H). HPLC5 Rt: 2.40 min (purity: 95.7%).

Step b) Formation ofN-{4-[(4-butylphenyl)ethynyl]benzyl}-l-hexanamine

To a solution of 4-[(4-butylphenyl)ethynyl]benzaldehyde (334 mg, 1.27 mmol, intermediate which may be obtained according to methods disclosed in EP03103780.7) and hexylamine (Aldrich, 98 μL, 1.53 mmol) in DCE (15.00 mL) was added acetic acid (110. μL) and sodium triacetoxyborohydride (405 mg, 1.91 mmol) and the resulting mixture was stirred at it for 3 hrs. The reaction mixture was then diluted with DCM and washed with a saturated aqueous solution of NaHCO3 and brine. The organic layer was dried over MgSO4 and the solvents were removed under reduced pressure. The crude product was purified by flash chromatography on silicagel (DCM, DCM/MeOH/NH4OH 98:2: 1 then 95:5: 1) to give 144 mg (32%) of the title compound. HPLC, Rt: 4.59 min (purity: 98.7%). 1H NMR (CD3Cl3) δ : 0.87 (t, J =6.9 Hz, 3H), 0.91 (t, J =7.3 Hz, 3H), 1.28-1.64 (m, 13H), 2.6 (t, J =7.3 Hz, 4H), 3.78 (s, 2H), 7.14 (d, J =8.1 Hz, 2H), 7.28 (d, J =8.3 Hz, 2H), 7.42 (d, J =8.3 Hz, 2H), 7.47 (d, J =8.1 Hz, 2H).

iStej? c) Formation ofN-{4-[(4-butylphenyl)ethynyl]benzyl}-N-hexyl-2,2-dimethyl- 4-oxo- 4H- 1, 3-beψaodioxine- 6-carboxamide

A solution of N-{4-[(4-butylphenyl)ethynyl]benzyl}-l-hexanamine (144 mg, 0.41 mmol), 2,2-dimethyl-4-o>co-4H-l,3-benzodioxine-6-carboxylic acid (92 mg. 0.41 mmol), EDCHCl (87 mg, 0.46 mmol), HOBT (61 mg, 0.46 mmol) and DIEA (105 μL, 0.62 mmol) in DCM (10 mL) was stirred at it overnight. Then the reaction mixture was diluted with DCM and washed with a saturated aqueous solution ofNaHCCb, a saturated aqueous, solution of NH4Cl and brine. The organic layer was dried over MgSO4 and the solvent was removed under reduced pressure. The crude product was purified by flash chromatography on silicagel (EtOAc/c-Hex (20/80)) to give 108 mg (47%) of the title compound as a colorless oil. HPLC, Rt: 6.14 min (purity: 99.9%). 1HNMR (CD3Cl3) δ : 0.82 (m, 3H), 0.91 (t, J

=7.3 Hz, 3H), 1.32-1.40 (m, 10H), 1.57 (m, 2H), 1.72 (s, 6H), 2.59 (t, J =7.6 Hz,:2H), 3.16- . 3.41 (m, 2H), 4.4O-4.72 (m, 2H), 7.00 (m, 2H), 7.14 (d, J =8.3 Hz, 2H), 7.25 (m, IH), 7.42 (d, J=8.1 Hz, 2H), 7.48 (d, J =8.1 Hz, 2H), 7.61 (m, IH), 8.03 (s, IH).

Step d) Formation of5-{[{4-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amino]carbony l}-2- hydroxybenzoic a-cid A solution ofN-{4-[(4-butylphenyl)efhynyl]betizryl}-N-hexyl-2,2-dimethy lτ4-oxo-4H-l,3- benzodioxine-6-cafboxamide (108 mg, 0.20 rnmol) and lithium hydroxide (120 mg, 2.9 lnmol) in THF (1 rnL) and water (ImL) was heated at 70°C overnight..The solvents were removed under reduced pressure. The residue was taken up in EtOAc and washed with an aqueous solution of HCl (IN) and brine, dried over MgSO4 and the solvent was removed under reduced pressure to give 91 mg (91%) of lixe title compound. HPLC, Rt:- 5.72 min (purity: 98.9%).

Step e) Formation of 5-{ [{4- [(4-butylphenyl)ethynyl]benzyl}(hexyl)amino] carbonyl}-2- hydroxybenzoic acid N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol) salt

To a solution of 5-{[{4-[(4-butylphenyl)ethynyl]h>en2yl}(hexyl)amino]carbo nyl}-2- hydroxybenzoic acid (91 mg, 98 mmol) in MeOHl (2 mL) was added a solution of N- methyl-D-glucamine (35 mg, 0.18 mmol) in watex (2 mL). Water (20 mL) was added and the resulting solution was lyophilized to give 103 mg of the title compound as a white powder. HPLC, Rt: 5.73 min (purity: 99.6%). LCTMS, M+(ESI): 512.2, M"(ESI): 510.2. 1H NMR (CD3OD) δ : 0.84 (m, 3H), 0.94 (t, J=7.3 Hz, 3H), 2.28-1.40 (m, 8H), 1.60 (m, 4H),

2.62 (t, J =7.7 Hz5 2H), 2.69 (s, 3H), 3.15 (d, J =6.0 Hz, 2H), 3.31 (m, 2H), 3.63-3.83 (m, 5H), 4.03 (m, IH), 4.72 (m, 2H), 6.86 (d, J =8.3 Hz3 IH), 7.18 (d, J =8.3 Hz, 2H), 7.19 (m, IH), 7.40 (d, J =7.9 Hz, 4H), 7.48 (d, J =7.9 Hz5 2BT), 7.99 (d, J =2.3 Hz, IH). M+(ESI): 512.2, MTESI): 510.2.

Example 20 : 5-(r(4-rf4-butylphenyl)ethvnyl1benzoyl}fhexyl)aminolmethyl}- 2- hydroxybeαzoic acid. N-methyl-D-gLncamine (i.e. 1-deoxy-l-fmethyl-

Step a) Formation of2,2-dimethyl-4-oxo-4H-l,S-beτιzodioxine-6-carbaldehyde.

A suspension of 5-formylsalicylic acid (Aldrich, 4.1 2 g, 24.8 mmol) in TFA (30 ml), TFAA (10 ml) and acetone (10 ml) was heated at 9O0C overnight. The reaction mixture was concentrated under reduced pressure. The residual oil was taken up in EtOAc and washed with a saturated aqueous solution of NaHCOs and birine. The organic layer was dried- over MgSO4 and the solvent was removed under reduced pressure. The crude product was purified by flash chromatography on silicagel (EtOAc/c-Hex (80/20)).to give 1.8 g (35%) of the title compound as a white powder. 1H NMR (X^DCl3) δ : 1.80 (s, 6H)■ 7.09 (d, J =8.7

Hz, IH), 8.09 (dd, J =8.7,2.3 Hz, IH), 8.45 (d, J=1.9 Hz, IH).

Step b) Formation of6-[(hexylamino)metnyl]-2,2-dimethyl-4H-l,3-benzodioxin-4-o ne

To a solution of 2,2-dimethyl-4-oxo-4H-l,3-beBZθdioxine-6-carbaldehyde (510 mg, 2.47 mmol) in anhydrous DCE (20 mL) was addedn-hexrylamine (392 μL,.2.97 mmol), acetic acid (212 μL) and sodium triacetoxyborohydride (786 mg, 3.71 mmol) snd the resulting mixture was stirred at rt for 3 hrs. The reaction mixture was diluted witifa DCM and washed with a saturated aqueous solution ofNaHCC>3 and brine. The organic la;yer was dried over MgSCU and the solvents were removed under reduced pressure. Purification by flash chromatography on silicagel (EtOAc/c-Hex (20/80)) gave 627 mg (87°/&) of the title compound. HPLC3 Rt: 2.70 min (purity: 86.4% ). 1H NMR (CDCl3) δ: O.8.5 (t, J =6.8 Hz, 3H), 1.28 (m, 6H), 1.48 (m, 2H), 1.70 (s, 6H), 2.41 (m, IH), 2.58 (t, J =7.3 Hz, 2H)5 3.74 (s, 2H), 6.90 (d, J =8.5 Hz, IH), 7.53 (dd, J =8.5,2.3 Hz, IH), 7.86 (d, J.^2.1 Hz, IH).

Step c) Formation of Methyl 4-[(4-butylphenyl)ethynyl]benzoate

To a solution of l-butyl-4-ethynylbenzene (Aldrich, 25.0 g, 0.157 mol) and methyl A- bromobenzoate (Aldrich, 30.9 g, 0.143 mol) in dry acetonitrile (300 mL) under nitrogen was added cuprous iodide (1.36 g, 7.18 mmol), TEA (43.6 g, 0.431 molf) followed by Pd(PPh3)2Cl2 (5.0 g, 7,18 mmol) and the reaction mixture was stirred at 85°C for 20 hrs. The solvent was removed under reduced pressure. The residue was takem up with Et2O (300ml) and washed with water and brine. The organic layer was dried over MgSO4 and the solvent was removed under reduced pressure. Purification by flash chromatography on silicagel (PetEther) gave 23.0 g (55%) of the.title compound.

Step d) Formation of4~(4-butylphenylethynyl)benzoic acid

To a solution of methyl 4-[(4-butylphenyl)ethynyl]benzoate (23.0 g, 0.O78 mol) in MeOH (200ml) was added LiOH (3.6 g, 0.157 mol) followed by water (50 mL> and the reaction mixture was stirred for 5 hrs at rt. The solvents were removed under recLuced pressure. The residue was acidified with an aqueous solution of HCl (1.5M) and a solid precipitated out. The precipitate was filtered and dried to yield 19.5 g (89%) of the title compo>xmd. IH NMR (DMSO-ύfo) δ: 13.1 (brs, IH), 7.96 (dd, J =1.6 and 6.7 Hz, 2H), 7.64 (<L, J =6.8 Hz, 2H), 7.49 (d, J =8.1 Hz, 2H), 7.25 (d, J =8.2 Hz, 2H), 2.60 (t, J =7.5 Hz, 2H), 1.55 (m, 2H), 1.29 (m, 2H), 0.88 (t, J =7.3 Hz, 3H)-.

Step e) Formation of4-[(4-butylphenyl)ethynyl]-N-[(2,2-dimethyl-4-oxo-4H-2,3-. benzodioxin-6-yl)methyl]-N-hexylbenzamide

A solution of 4-(4-butylphenylethynyl)b.enzoic acid (330 mg, 1.19 mmol), EDC.HC1 (231 . mg, 1.21 mmol), HOBT (163 mg, 1.21 mmol) andDIEA (256 μl, 1.51 mmol> in DCM (15 . mL) was stirred 10 min at rt. Then a solution of 6-[(hexylamino)methyl]-2,2-clrmethyl-4H- l,3-benzodioxin-4-one (293 mg, 1.01 mmol) in DCM (5 mL) was added and the resulting mixture was stirred 3 hrs at rt. The reaction mixture was diluted with DCM and washed with a saturated aqueous solution of NaHCθ3, an aqueous solution of HCl (HST) andbrine. Organic layer was dried over MgSO4 and the solvent was removed under reduced pressure. Purification by flash chromatography on silica gel (EtOAc/c-Hex (20/80)) gave 420 mg (73%) of the title compound. HPLC, Rt: 6.18 min (purity: 92.3%). A second purification by. preparative HPLC with a X-Terra column allowed the isolation of the title compound (300 mg, 54% yield) as a white powder. HPLC, Rt: 6.15 min (purity: 99.1 %). LCOVIS, M+(ESI): 552.7. 1HNMR (CDCl3) δ : 0.82 (m, 3H), 0.91 (t, J =7.3 Hz, 3H), 1.09-1.41 <m, 8H), 1.53

(m, 4H), 1.72 (s, 6H), 2.60 (t, J =7.6 Hz, 2H), 3.16-3.45 (m, 2H), 4.50-4.70 (no, 2H), 6.96 (d, J =8.5 Hz, IH), 7.15 (d, J =8.1 Hz, 2H), 7.37 (d, J =8.3 Hz, 2H), 7.42 (d, J =7.9 Hz, 2H), 7.52-7.84 (m, 4H). Stepj) Formation of5-{[{4-[(4-butylphenyl)ethynyl]benzoyl} (hexyl)amino]methyl}-2- hydroxybenzoic acid

The title compound was prepared following procedure described in example 19, step c) nOm 4-[(4-butylρhenyl)ethynyl]-N-[(2,2-dimethyl-4-oxo-4H-l:(3-b enzodioxin-6- yl)methyl]-N-hexylbenzamide (300 mg, 0.54 mmol) to give 253 mg (91%) of a white powder. HPLC, Rt: 5.74 min (purity: 99.6%). LC/MS, IvT(ESI): 509.9.

Step g), Formation of5-{[{4-[(4-butylphenyl)ethynyl]benzoyl}(hexyl)amino]methyl }-2- hydroxybenzoic acid, N-methyl-D-glucamine (i.e. l-deoxy-l-(rnethylamino)glucitol) salt

To a solution of 5-{[{4-[(4-butylphenyl)ethynyl]benzoyl}(hexyl)amino]methyl}- 2- hydroxybenzoic acid (253 mg, 0.49 mmol) in MeOH (5 mL) was added a solution of N- methyl-D-glucamine (97 mg, 0.49 mmol) in water (2 mL). Water (20 mL) was added and the resulting solution was lyophilized to give 306 mg of the title compound as a white powder. HPLC, Rt: 5.75 min (purity: 99.8%). LCMS, M+(ESI): 512.0, MT(ESl): 509.9. 1H NMR (CD3OD) δ : 0.81 (m, 3H), 0.94 (t, J =7.4 Hz, 3H), 1.07 (m, 3H), 1.37 (m, 5H), 1.58- 1.71 (m, 4H), 2.63 (t, J =7.7 Hz, 2H), 2.69 (s, 3H), 3.14 (d, J =6.0 Hz, .2H), 3.29 (m, IH), 3.43 (m, IH), 3.61-3.83 (m, 5H), 4.04 (t, J =6.4 Hz, IH), 4.69 (s, IH), '4.85 (s, IH), 6.80 (m, IH), 7.08 (m, 0.5H), 7.19 (d, J=8.3 Hz5 2H), 7.41-7.47 (m, 4.5H), 7.57 (m, 2H), 7.72 (m, 0.5H), 7.85 (m, 0.5H). Analysis calculated for C33H37NO4-C7Hi7NO5-LS H2O: C 65.46 ;H 7.83 ;N 3.82 %. Found: C 65.50 ;H 7.69 ;N 3.80%

Example 21 : 5-{r(4-rr4-buMphenyπethynyl]benzylKhexyDamino1sulfonyl}-2-h vdroxy- benzoic acid . N-πiethyl-D-glucamine (Le. 1-deoxy-l-Cmetfaylamino)- glucitol) salt

Step a) Formation of 5-{[{4-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amino] sulfonyl}-2- hydroxybenzoic acid

A solution^ N-{4-[(4-butylphenyl)ethynyl]benzyl}-l-hexanamine (323 mg, 0.93 mmol), 3-hydroxy-4-carboxybenzene sulfonyl chloride (231 mg, 0.98 mmol) and KaCO3 (385 mg, 2.79 mmol) in dioxane (5 mL) and water (5 mL) was stirred at room temperature overnight. The solvent was removed under reduced pressure. The residue was diluted with an aqueous solution of HCl (IN) and extracted with EtOAc. The organic layer was washed with brine, dried over MgSO4 and the solvents were removed under reduced pressure. Purification by preparative HPLC using a X-Terra column gave 287 mg (56%) of the title compound as a white powder. HPLC Rt: 6.01 min (purity: 97.8%). LC/MS, MT(ESI): 546.7. 1HNMR (CD3OD) δ : 0.82 (t, J =7.00 Hz, 3H), 0.94 (t, J =7.3 Hz, 3H), 1.12 (m, 6H), 1.38 (m, 4H),

1.61 (qt, J =7.6 Hz, 2H), 2.63 (t, J =7.7 Hz, 2H), 3.14 (t, J =7.5 Hz, 2H), 4.39 (s, 2H), 7.19 (d, J =7.2 Hz, 2H), 7.33-7.48 (m, 8H), 8.06 (d, J =7.9 Hz, IH). Step b) Formation of5-{[{4-[(4-butylphenyl)ethynyl]benzyl}(}ιexyl)amino]sulfo nyl}-2- hydroxybenzoic acid , N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol) salt

To a solution of 5-{[{4-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amino]sulfonyl} -2- hydroxybenzoic acid (287 mg, 0.52 mmol) in MeOH (5 mL) was added a solution of N- methyl-D-glucamine (102 mg, 0.52 mmol) in water (4 mL). Water (20 mL) was added and the resulting solution was lyophilized to give 300 mg of the title compound as a white powder. HPLC3 Rt: 5.98 min (purity: 99.9%). LC/MS, MT(ESI): 545.9. 1HNMR (CD3OD) δ :0.79 (t, J =7.0 Hz, 3H), 0.92 (t, J =7.2 Hz, 3H), 1.28 (m, 6H), 1.33 (m, 4H), 1.58 (m,

2H), 2.60 (t, J =7.3 Hz, 2H), 2.70 (s, 3H), 3.08 (t, J=7.2 Hz, 2H), 3.16 (m, 2H), 3.68-3.83 (m, 4H), 4.33 (m, IH), 4.33 (s, 2H), 7.15-7.45 (m, 10H), 8.02 (d, J =7.9 Hz, IH). Analysis calculated for C32H37NO5S-C7H17NO5-H2O: C 61.56 ;H 7.42 ;N 3.68 %. Found: C 61.70 ;H •7.30 ;N 3.71 % Example 22: 4-f{4-rf4-butylphenyl)ethvnyl1ben2ylKhexyl')ainmol-2-hydroxy benzoic acid. N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino^glucitol) salt

Step a) Formation of 7-[4-(4-butyl-phenylethynyl)-benzylamino]-2,2-dimethyl- benzo[l,3]dioxin-4-one

A solution of 4-[(4-butylphenyl)ethynyl]benzaldehyde (2.0 g, 7.63 mmol, intermediate which may be obtained according to methods disclosed in EP03103780.7) and 7-amino- 2,2-dimethy-4H-l,3-benzodioxine-4-one (1.47 g, 7.63 mmol) in toluene (30 mL) was heated at reflux for 96 hrs with azeotropic removal of water. The reaction mixture was concentrated off under reduced pressure. MeOH (15 mL) and THF (15 mL) were then added, and the resulting mixture chilled at 00C. Sodium borohydride (375 mg, 9.9 mmol) was added portionwise and the mixture was stirred for 1 hr at 00C, then 3 hrs at room temperature. The reaction mixture was diluted with EtOAc (60 mL) and washed with an aqueous solution of NaOH (3x15 mL, IN). The organic layer was dried over MgSO4 and the solvents were removed under reduced pressure. Et2O (100 mL) was added and the resulting white precipitate was filtered off to give 2.2 g (66%) of the title compound as a white solid. HPLC, Rt: 5.62 min (purity: 93.6%). LC/MS, MXESI): 438.3, M+(ESI): 440.2. 1H NMR (CDCl3) δ: 7.71 (d, J=8.6 Hz, IH), 7.50 (d, J=8.3 Hz, 2H), 7.42 (d, J=8.3 Hz32H), 7.29 (d, J=7.9 Hz, 2H), 7.14 (d, J=7.9 Hz, 2H), 6.32 (m, IH), 6.01 (m, IH), 4.38 (s, 2H), 2.61 (t, J=7.5 Hz, 2H), 1.60 (s, 6H), 1.65-1.50 (m, 2H), 1.42-1.28 (m, 2H), 0.91 (t, J=7.5 Hz, 3H). Step b) formation of 7-[{4-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amino]-2,2-dimet hyl-4H- 1,3- benzodioxin-4-one

s To a solution of 7-[4-(4-bu1yl-phenyleihynyl)-benzylamino]-2,2-diinethyl-benz o[l ,3]-. dioxin-4-one (1.16 g, 2.64 mmol) in DMSO (32 mL) was added sodium hydride :(159 mg, 3.96 mmol, 55-65% in oil) and the resulting mixture was stirred 2 min at rt, -then 1- • bromohexane (559 μl, 3.96 mmol) was added. The red solution was stirred at rt for 2 hrs. . The reaction mixture was poured in EtOAc (70 mL) and washed with an aqueous solution • o of HCl (2x30 mL, 0.1N) and water (6x30 mL). The organic layer was dried overMgSO4 - and the solvents were removed under reduced pressure. The crude mixture was purified by flash chromatography on silicagel (c-Hex/EtOAc (6/1)) to give 795 mg (56%) of the title • compound as a yellow oil. HPLC, Rt: 6.4 min (purity: 98.3%). M+(ESI): 524.5. 1HNMR (CDCIs) δ: 7.71 (d, J=8.7 Hz, IH), 7.47 (ά, J=8÷3 Hz, 2H), 7.41 (d, J=7.9 Hz, 2H), 7.13 (m, 5 4H), 6.36 (m, IH), 6.04 (m, IH), 4.58 (s, 2H), 3.40 (t, J=7.7 Hz, 2H), 2.61 (t, J=7.7 Hz,- 2H), 1.76-1.48 (m, 8H), 1.42-1.20 (m, 10H), 0.95-0.82 (m, 6H).

Step c) formation of4-{[4-(4-butyl-phenylethynyl)-benzyl]-hexyl-amino}-2-hydro xy-benzoic acid

To a solution of 7-[{4-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amino]-2,2-dimet hyl-4H- l,3-benzodioxin-4-one (613 mg, 1.2 mmol) in THF (18 mL) was added a suspension of lithium hydroxide monohydrate (1.47 g, 35.1 mmol) in water (5.0 mL) . The resulting mixture -was refluxed for 48 hrs. The reaction mixture was diluted with Et2O (60 mL) and washed with an aqueous solution of HCl (3x15 mL, IN) and brine. The organic layer was dried over MgSO4 and the solvents were removed under reduced pressure to give 443 mg (78%) of the title compound as a yellow powder. HPLC, Rt: 6.2 min (purity: 97.7%). LC/MS, M-(ESI): 482.2. 1H NMR (CDCl3) δ: 10.59 (s, IH)5 7.66 (d, J=9 Hz, IH), 7.45 (m, 4H), 7.13 (m, 4H), 6.21 (m, IH), 6.14 (m, IH), 4.58 (s, 2H), 3.40 (m, 2H), 2.60 (t, J=7.5 Hz, 2H), 1.72-1.51 (m, 2H), 1.42-1.20 (m, 10H), 0.95-0.82 (m, 6H).

Step d) formation of4-[{4-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amino]-2-hydro xybenzoic acid, N-methyl-D-glucamine (i.e. l-deoxy~l~(methylamino)glucitol) salt

To a solution of 4-[{4-[(4-bu1ylphenyl)emynyl]benzyl}(hexyl)amino]-2-hydroxyb enzoic acid (475 rag, 0.98 mmol) in THF/EtOH (10 mL) was added a solution of N-methyl-D- glucamine (192 mg, 0.98 mmol) in water (50 mL). The resulting solution was lyophilized to give .615 mg (92%) of the title compound as a pale yellow powder. HPLC, Rt: 6.1 min (purity: 98.2%). LC/MS, M-(ESI): 482.0

Example 23: 5-r{4-r(4-butylphenyl)ethynyllbenzyl}('hexyl')amino]-2-fluor obenzoic acid

Step a) Formation of methyl 5-({4-[(4-butylphenyl)ethynyl]benzyl}amino)-2-fluorobenzoate A solution ofmethyl 5-amino-2-fluorobenzoate (1.20 g, 7.1 mmol, described inJ. Chem. Soc. PerUn Trans. I, 1975, 1283-1284 and J. Org. Chem., 1990, 2034-2044) and 4-[(4- butylphenyl)ethynyl]benzaldehyde (1.95 g, 7.4 mmol, intermediate which may be obtained according to methods disclosed in EP03103780.7) in toluene (30 ml) was heated under reflux for 2.5 hrs with azeotropic removal of water. The reaction mixture was cooled down to 00C, then MeOH (30 mL) and sodium borohydride (540 mg, 14.2 mmol) were added. The reaction mixture was stirred at 00C for 30 min, then at rt for 1 hr. The reaction mixture was diluted with a saturated aqueous solution of NaCl (100 mL) and water (30 mL) and then extracted with Et2θ (300 mL + 50 mL). The combined organic layers were dried over MgSθ4 and the solvents were removed under reduced pressure. The residual brown gummy oil was taken up in MeOH (10 mL) and a white solid precipitated out. Filtration and washing withMeOH (2x) gave 2.23 g (76%) of the title compound as a white powder. HPLC, Rt: 5.8 min (purity: 98.2%). LCMS, M"(ESI): 414.0. 1H NMR (CDClj) δ: 7.51 (d, J=7.9 Hz, 2H), 7.45 (d, J=8.0 Hz, 2H), 7.34 (d, J=8.0 Hz, 2H), 7.17 (m, 3H), 6.97 (m, IH), 6.76 (m, IH), 4.35 (s, 2H)3 3.92 (s, 3H), 2.63 (t, J=7.8 Hz, 2H), 1.61 (m, 2H), 1.37 (m, 2H), 0.94 (t, J=7.4 Hz, 3H).

Step b) Formation of methyl 5-[{4-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amino]-2r fluorobenzoate

To a suspension of methyl 5-({4-[(4-butylphenyl)ethynyl]benzyl}ammo)-2-fluorobenzoate (500 mg, 1.20 mmol) in anhydrous DCE (8 mL) were added hexanal (0.25 mL, 2.07 mmol) and sodium triacetoxyborohydride (825 mg, 3.89 mmol). The reaction mixture was stirred at 70°C for 3.5 hrs. Then the reaction mixture was diluted with water (10 mL) and extracted with DCM (2x10 mL). The combined organic layers were dried over MgSO4 and the solvents were removed under reduced pressure. Purification by flash chromatography on silicagel (cHex/EtOAc) gave 460 mg (77%) of title title compound as apale yellow oil. HPLC3 Rt: 6.3 min (purity: 99.9%). 1HNMR (CDCl3) δ: 7.47 (d, J=8.3 Hz, 2H), 7.44 (d, J=8.3 Hz, 2H), 7.18 (m, 5H), 6.95 (dd, J=ICl, 9.0 Hz, IH), 6.74 (m, IH), 4.52 (s, 2H), 3.91 (s, 3H), 3.38 (t, JK7.7 Hz, 2H)5 2.63 (t, J=7.7 Hz, 2H), 1.60 (m, 4H), 1.42-1.25 (m, 8H), 0.92 (m, 6H).

Step c) Formation of5-[{4-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amino]-2-fluor obenzoic acid

To a solution of methyl 5-[{4-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amino]-2-fluoro- benzoate (454 mg, 0.91 mmol) in MeOH (40 mL) was added an aqueous solution of NaOH (2.7 mL, IN). The reaction mixture was stirred at 500C for 36 hrs. Then, an aqueous solution of HCl (5 mL, IN) was added and the reaction mixture was poured into water (100 mL) and extracted with Et2θ (200 mL + 2x100 mL). The combined organic layers were dried over MgSO4 and the solvents were removed under reduced pressure to give 396 mg (90%) of the title compound as a beige powder. HPLC, Rt: 5.8 min (purity: 99.1%). LC/MS, M+(ESI): 486.1, M-(ESI): 484.0. 1H NMR (CDCl3) δ: 7.48 (d, J=8.3 Hz, 2H), 7.44 (d, J=8.3 Hz, 2H), 7.29 (dd, J=5.6, 3.3 Hz, IH), 7.17 (m, 4H)5 6.97 (dd, J=10.2,.9.0 Hz, IH), 6.78 (ddd, J=9.0, 3.4, 3.3 Hz, IH), 4.52 (s, 2H), 3.39 (t, J=7.6 Hz, 2H), 2.62 (t, J=7.6 Hz, 2H), 1.61 (m, 4H), 1.42-1.25 (m, 8H), 0.94 (t, J=7.3 Hz, 3H), 0.90 (t, J=6.8 Hz, 3H). Example 24: S-f (4-r(4-butylphenyl)ethytiyllbenzyl}fhexyl)ammo1-2-fluorobenz oic acid. N-metfayl-D-glucamine (i.e. l-deoxy-l-fmethylamino)glucitol) salt

To a solution of 5-[{4-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amino]-2-fluorob enzoic acid (378 mg, 0.78 mmol) in MeOH (3 mL) was added a solution of N-Me-D-glucamine (152 mg, 0.78 mmol) in water (1 mL). Then water (30 mL) was added and the resulting solution was lyophilized to give 493 mg (93%) of the title compound as a pale yellow oil. HPLC, Rt: 5.8 min (purity: 98.0%). LC/MS, M+(ESI): 486.1, MT(ESI): 483.9.

Example 25 : S-ir^-r^-butylphenvπethynyllbenzvUChexyDammoicarbonyl}^- hvdroxybenzoic acid

Step a) Formation ofN-{2-[(4-butylpheήyl)ethynyl]benzyl}-l-hexanamine

The title compound was prepared following procedure described in example 19 , step b) from2-[(4-butylphenyl)ethynyl]benzaldehyde (1.12 g, 4.28 mmol, intermediate which may be obtained according to methods disclosed in EP03103780.7) and n-hexylamine (Aldrich, 294 μl, 5.13 mmol). Purification of the crude product by flash chromatography on silicagel (DCM/MeOH/NH4OH 98/2/1) gave 174 mg (12%) of the title compound. HPLC, Rt: 4.39 min (purity: 91.6%). LC/MS, M+(ESI): 348.4. 1HNMR (CDCl3) δ : 0.82 (t, J =6.8 Hz, 3H), 0.91 (t, J =7.3 Hz, 3H), 1.23-1.40 (m, 8H), 1.46-1.64 (m, 4H), 2.25 (m, IH), 2.62 (t, J =7.5 Hz, 4H), 4.00 (s, 2H), 7.15 (d, J =8.3 Hz, 2H)5 7.17-7.26 (m, 2H), 7.39 (m, IH), 7.42 (d, J =8.3 Hz, 2H), 7.50 (dd, J =7.3, 1.7 Hz, IH).

Step b) Formation ofN-{2-[(4-butylphenyl)ethynyl]benzyl}-N-hexyl-2,2-dimethyl- 4-oxo- 4H-l,3-benzodioxine-6-carboxamide

A solution of N-{2-[(4-butylphenyl)ethynyl]benzyl}-l-hexanamine (174 mg, 0.50 mmol), 2,2-dimethyl-4-oxo-4H-l,3-benzodioxine-6-carboxylIc acid (122 mg, 0.55 mmol), EDCHCl (115 mg, 0.60 mmol), DIEA (102 μl, 0.60 mmol) and HOBT (81 mg, 0.60 mmol) in DCM (10 mL) was stirred at rt for 3 hrs. The reaction mixture was diluted with DCM and washed with a saturated aqueous solution of NaHCO3, an aqueous solution of HCl (IN) and brine. The organic layer was dried over MgSO4 and the solvent was removed under reduced pressure. Purification by flash chromatography on silicagel (EtOAc/c-Hex (20/80)) gave 238 mg (87%) of the title compound. HPLC, Rt: 6.14 min (purity: 86.7%).

Step c) Formation of5-{[{2-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amino]carbony l}-2- hydroxybenzoic acid The title compound was obtained following procedure described in example 19, step c) from N-{2-[(4-butylphenyl)ethynyl]benzyl}-N-hexyl-2,2-dimethyl-4- oxo-4H- 1 ,3-benzo- dioxine-6-carboxamide (238 mg, 0.43 mmol). Purification by preparative HPLC with a X- Terra column gave 110 mg (50 %) of the title compound. HPLC, Rt: 5.73min (purity: 96.4%).

Example 26 : 4-rf3-cyclopentylpropyl){4-[(4-fluorophenyDethynyllbenzoyl&g t; amino V2- hydroxybenzoic acid . N-methyl-D-glucamine (i.e. l-deoxy-l-(metfayl- amino)glucitoD salt

Step a) Formation of3-cyclopentyl-N-(2,2~dimethyl-4-oxo-4H-l,3-benzodioxin-7- yl)propanamide

To a cold (O0C) solution of 7-amino-2s2-dime%l-4H-l,3-benzodioxine-4-one (1.93 g, 10.0 mmol) and DIEA (1.55 g, 12.00 mmol) in DCM (50 mL) was added drop- wise a solution of 3-cyclopentylρropionyl chloride (Aldrich, 1.93 g, 12.0 mmol) in DCM. The reaction was stirred at 00C for 1 hr, then at it for 3 hrs. The reaction mixture was washed with an aqueous solution of HCl (IN). The organic layer was dried over MgSO4 and the solvent was removed under reduced pressure. Purification by flash chromatography on silicagel (EtOAc/c-Hex (30/70)) gave 3.05 g (96%) of the title compound as a pale yellow oil. HPLC, Rt: 4.26 min (purity: 99.6%). LC/MS, M+(ESI): 318.2, MXESI): 316.2. 1H NMR (CDCl3) δ : 8.13 (s, IH), 7.82 (d, J=8.4 Hz5 IH), 7.58 (d, J=1.9 Hz, IH), 7.05 (dd, J=1.9

Hz, J=8.4 Hz, IH), 2.41 (t, J=7.6 Hz, 2H), 1.80-1.45 (m, 15H), 1.17-1.00 (m, 2H). Step b) Formation of7-[(3-cycIopentyIpropyl)amino]-2,2-dimethyl-4H-l,3-benzodi oxin-4- one

To a solution of 3-cyclopentyl-N-(2,2-dimethyl-4-oxo-4H-l,3-benzodioxin.-7- yl)propanamide (2.57 g, 8.08 mmol) in THF (30 mL) was added a solution of borane in THF (24.3 ml, 24.3 mmol, IM) and the resulting mixture was stirred at rt for 2hrs. The mixture was then refhixed for 2 hrs. A solution of borane in THF (10.0 ml,: 10.0 mmol, IM) was added again and the mixture was refiuxed for an additional 5 hrs. The reaction was quenched with HCl 5 N. Then the solution was made basic by the addition of an aqueous solution of NaOH (5N) and extracted with Et2O (3x). The combined organic layers were dried over MgSO4 and the solvents were removed under reduced pressure. Purification by flash chromatography on silicagel (EtOAc/c-Hex (20/80)) gave 2.1 g (86%) of the title compound as a white solid.

Step c) Formation of4-bromo-N-(3-cyclopentylpropyl)-N-(2,2-dimethyl-4~oxό~4H- l,3- benzodioxin-7-yl)benzamide

To a cold (00C) solution of 7-[(3-cyclopentylpropyl)amino]-2,2-dimetliyl-4H1l,3- benzodioxin-4-one (1.70 g, 5.60 mmol) in pyridine (10 mL) was added 4-bromobenzoyl- chloride (Aldrich, 1.47 g, 6.72 mmol) and the resulting reaction mixture was stirred 10 min at 00C3 30 min at it and 7 hrs at 600C. The solvent was removed under reduced pressure. Purification by flash chromatography on silicagel (EtOAc/c-Hex (15/85)) gave 1.6 g (59%) of the title compound as a white solid. HPLC, Rt: 5.2 min (purity: 99.5%). 1HlSlMR (CDCl3) δ: 7.81 (d, J=7.3 Hz, IBQ, 7.35 (d, J=8.7 Hz, 2H), 7.18 (d, J=8.7.Hz, 2H), 6.76 (dd, J=1.9 Hz, J=8.3 Hz, IH), 6.56 (±, J=1.9 Hz, IH), 3.91 (t, J=7.9 Hz, 2H), 1.80-1.25 (m, . 17H), 1.12-0.95 (m, 2H).

Step d) Formation ofN-(3-cyclopentylpropyl)-N~(2,2-dimethyl-4-oxo-4H-l;3-:benz odioxin- 7-yl)-4-[(4-fluorophenyl)ethynylJbenzamide

A solution of 4-bromo-N-(3-cyclopentylpropyl)-N-(2,2-dimethyl-4-oxo-4H-l,3 - benzodioxin-7-yl)benzamide (355 mg, 0.73 mmol) , 4-fluorophenylacetylene (Apollo, 96 mg, 0.80 mmol) , bis(triphenylph.osphine)palladium(II) chloride (26 mg, 0.04 mmol), triphenylphosphine (38 mg, 0.15 mmol) and cuprous(I) iodide (7 mg, 0.04 mmol) in DMF (3 mL) and TEA (ImL) was heated under microwave conditions at 120°C for 25 min. The reaction mixture was then diluted, with Et2θ and the precipitate obtained was filtered off. Filtrate was then washed with an aqueous solution of HCl (IN) and brine. The organic layer was dried over MgSO4 and the solvents were removed under reduced pressure. Purification by flash chromatography on silicagel (EtOAc/c-Hex (10/90 to 20/80)) gave 321 mg (84%) of the title compoxind. HPLC, Rt: 5.67 min (purity: 97.9%). 1H NMR (CDCl3) δ: 7.78 (d, J =8.3 Hz, IH), 7.44 (m, 2H), 7.31 (AB, J -8.4, Δ =12 Hz, 4H), 7.01 (t, J =8.5 Hz, 2H), 6.75 (dd, J =8.3,2.1 Hz, IH), 6.58 (d, J =2.1 Hz, IH), 3.91 (t, J =7.7 Hz, 2H), 1.40-1.71 (m, 15H), 1.34 (m, 2H), 1.03 (m, 2H). Step e) Formation of4-((3-cyclopentylpropyl){4-[(4-fluorophenyl)ethynyl]benzoy l}amino)- 2-hydroxybenzoic acid

The title compound was prepared following the procedure described in example 19, step c) fromN-(3-cyclopentylpropyl)-N-(2,2-dimethyl-4-oxo-4H-l,3-ben zodioxin-7-yl)-4-[(4- fluorophenyl)ethynyl]benzamide (850 mg, 1.65 mmol). Purification of the crude (320 mg) by preparative HPLC using a X-Terra column gave 207 mg (70%) of the title compound. HPLC, Rt: 5.28 min (purity: 99.3%). LCMS, MT(ESI): 484.2. 1H NMR (CDCl3) δ :■ 10.53

(s, IH), 7.68 (d, J =8.5 Hz, IH), 7.42 (m, 2H), 7.33 (m, 4H), 7.01 (t, J =8,9 Hz, 2H), 6.71 (d, J =1.9 Hz, IH), 6.48 (dd, J =8.5,2.1 Hz, IH), 3.91 (t, J =7.6 Hz3 2H), 1.56-1.71 (m, 9H), 1.31 (m,2H), 1.03 (m, 2H).

Stepj) Formation of4-((3-cyclopentylpropyl){4-[(4-fluorophenyl)ethynyl]benzoy l}amino)- ■ 2-hydroxybenzoic acid, N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol) salt

To a solution of 4-((3-cyclopentylpropyl){4-[(4-fluorophenyl)ethynyl]benzoyl} amino)-2- hydroxybenzoic acid (207 mg, 0.43 mmol) in MeOH (20 mL) was added a solution of N- methyl-D-glucamine (83 mg, 0.43mmol) in water (4 mL). Water (20 mL) was added and the resulting solution was lyophilized to give 268 mg of th& title compound as a white powder. HPLC, Rt: 5.31 min (purity: 99.9%). LC/MS, M"(ESI): 545.9. 1H NMR (CD3OD) δ : 0.79 (t, J =7.0 Hz, 3H), 0.92 (t, J =7.2 Hz, 3H), 1.2S (m3 6H), 1.33 (m, 4H), 1.58 (m,

2H), 2.60 (t, J =7.3 Hz, 2H), 2.70 (s, 3H), 3.08 (t, J =7.2 Hz, 2H), 3.16 (m, 2H), 3.68-3.83 (m, 4H), 4.33 (m, IH), 4.33 (s, 2H), 7.15-7.45 (m, 10H), 8.O2 (d, J =7.9 Hz, lH). Analysis ■ calculated for C3oH28Nθ4F.C7H,7Nθ5.1.3 H2O: C 63.11; H 6.81; N 3.98 %. Found: C 62.99; H 6.81; N 4.03 %.

Example 27 : 4-F(4-|'f4-butylρhenyl')ethvnyl1benzoylK3-c>^clopentylpr opyl)amino'|-2- . hydroxybenzoic acid , N-methyl-D-glucamiαe fi.e. 1-deoxy-l-(methyl- • aminoMucitol) salt

Step a) Formation of^fft-butylphenylJethynylJ-N-β-cycloypentylpropylJ-N-ft^-d imethyl- 4-oxo-4H-l,3-benzodioxin-7-yI)benzamide

The title compound was prepared following procedure described in example 26, step d) from 4-bromo-N-(3-cyclopentylpropyl)-N-(2,2-dimethyl-4-oxo-4H- 1 ,3-benzodioxin-7- yl)benzamide (437 mg, 0.90 mmol) and 4-butylpb.eαylacetylene (156 mg, 0.99 mmol). Purification by flash chromatography on silicagel (EtOAc/c-Hex (10/90 to 15/85) gave 540 mg (quantitative yield) of the title compound. HPLC, Rt: 6-30 min (purity: 94.3%). LC/MS, M+(ESI): 563.8. 1H NMR (CDCl3) δ : 7.78 (d, J=8.3 Hz, LH), 7.38 (d, J =8.1 Hz, 2H),

7.30 (AB, J =8.5, Δ =14.5 Hz, 4H), 7.13 (d, J =8.3 Hz, 2H)3 6.76 (dd, J =8.3,2.0 Hz, IH), 6.56 (d, J =2.0 Hz, IH), 3.91 (t, J =7.6 Hz, 2H), 2.59 (t, J =7.7 Hz, 2H), 1.19-1.67 (m, 21H)5 0.99 (m, 2H), 0.85 (t, J =7.3 Hz, 3H).

Step b) Formation of4-[{4-[(4-butylphenyl)ethynyl]benzoyl}(3-cycloperztylpropy l)amino]- 2-hydroxybenzoic acid

The title compound was prepared following the procedure described in example 19,.step. c) fiOm4-[(4-butylphenyl)ethynyl]-N-(3-cyclopentylpropyl)-N-(2, 2-dimettiyl-4-oxo-4H-l,3- benzodioxin-7-yl)benzamide (460 mg, 0.82 mmol). Purification of the crude by preparative HPLC using a X-Terra column afforded 278 mg (65%) of the title compound. HPLC, Rt: 5.88 rnin (purity: 99.9%). LC/MS, JVT(ESI): 521.9. 1H NMR (CDCl3) δ : 10.58 (s, IH), 7.69 (d, J=8.7 Hz, IH), 7.37 (d, J=8.1 Hz, 2H), 7.32 (m, 4H), 7.11 (d, J=8.1 Hz3 2H), 6.71 (d, I =2.1 Hz5 IH)5 6.48 (dd, J=8.5,1.9 Hz, IH), 3.91 (t, J=7.6 Hz52H)3 2.58 (t, J =7.6 Hz, 2H), 1.54-1.71 (m, HH), 1.33 (m, 4H), 1.03 (m, 2H), 0.90 (t, J=7.3 Hz, 3H).

Step c) Formation of 4-[{4-[(4-butylphenyl)ethynyl]benzoyl}β-cyclopentylpropyl)a mino]~ 2-hydroxybenzoic acid, N-methyl-D-glucamine (i.e. l-deoxy-l-(methyla:mino)glucitol) salt

To a solution of 4-((3-cyclopentylpropyl) {4-[(4-butylρhenyl)ethynyl]benzoy-l}amino)-2- ■ hydroxybenzoic acid (278 mg, 0.53 mmol) in MeOH (20 mL) was added a solution of N- methyl-D-glucamine (104 mg, 0.53mmol) in water (4 mL). Water (20 mL) was added and the resulting solution was lyophilized to give 421 mg of the title compound.as a white powder. HPLC, Rt: 5.84 min (purity: 99.9%). LC/MS, M"(ESI): 545.9. Analysis calculated for -C34H37NO4-C7HI7NOSAO H2O: Calculated C 62.26; H 7.90; N 3.54 %.. Found: C 62.36; H 7.77; N 3.54 %.

Example 28 : '5-{[(4-|"(4-fluorophenyl)e1hvnyl]benzoyl}(hexyl)ainino]meth ^yl}.-2-hydroxy- benzoic acid , N-methyl-D-glucamine (i.e. 1-deoxy-l-fmethylammo')-

Step a) Formation of4-[(4-fluorophenyl)ethynyl]benzoic acid

To a solution of 4-[(4-fluorophenyl)ethynyl]benzaldehyde (10.39 g; 46.37 mmol, intermediate which may be obtained according to methods disclosed in EP03 103780.7) in DMF (400 mL) was added potassium peroxomonosulfate (28.5 g, 46.4 mmoL) in one portion at rt. The reaction mixture was stirred at rt overnight. The reaction mixture was poured in water (2L) and the resulting precipitate was filtered off, washed with water and dried under reduced pressure to give 10.45 g (94%) of the title compound as a white powder. HPLC, Rt: 3.98 min (purity: 98.6%). 1H NMR (DMSO-d6) δ : 13.15 (brs, IH), 7.96 (d, J =8.1 Hz, 2H), 7.64 (m, 4H), 7.29 (t, J =8.9 Hz, 2H).

Step b) Formation ofN~[(2,2-dimethyl-4-oxo-4H-l,3-benzodioxin-6-yl)methyl]~4-[ (4- fluorophenyl) ethynyl]-N-hexylbenzamϊde

The title compound was prepared following procedure described in example' 20, step e) from 6-[(hexylamino)methyl]-2,2-dimethyl-4H-l,3-benzodioxin-4-one (490 mg, 1.68 mmol) and 4-[(4-fluorophenyl)ethynyl]benzoic acid (484 mg, 2.02 mmol). Purification of the crude product by flash chromatography on silicagel (EtOAc/c-Hex (20/8O)) gave 850 mg (98%) of the title compound. HPLC, Rt: 5.54 min (purity: 99.9%). LC/MS, M+(ESI): 514.1. 1H NMR (CDCl3) δ : 7.45-7.90 (m, 6H), 7.37 (d, J =8.1 Hz, 2H), 7.00 (t, J=8.8 Hz,

2H), 6.94 (d, J =8.5 Hz, IH)3 4.69 (s, 1.5H), 4.45 (s, 0.5H), 3.39 (s, 0.5H), 3.14 (s, 1.5H), 1.07-1.77 (m, 14H), 0.80 (m, 3H).

Step c) Formation of5-{[{4~[(4~fluorophenyl)ethynyl]benzoyl}(hexyl)amino]methy l}-2- hydroxybenzoic acid The title compound was prepared following the procedure described in example 19, step c) fromN-[(2,2-dimethyl-4-oxo-4H-l,3-benzodioxin-6-yl)methyl]-4 -[(4-fluorophenyl)- ethynyl]-N-hexylbenzamide (850 mg, 1.65 mmol). 680 mg (87%) of the title compound was isolated as a white foam. HPLC, Rt: 5.04 min (purity: 99.0%). LC/MS, M+(ESI): 474.1, M"(ESI): 471.9. 1H NMR (CDCl3) δ : 10.83 (s, IH), 10.29 (s, IH), 7.22-7.86 (m, 8H)3 6.99 (m, 3H), 4.7 (s, 1.4H), 4.42 (s, 0.6H), 3.47 (s, 0.6H), 3.14 (s, 1.4H), 1.07-1.62 (m, 8H), 0.80 (m, 3H).

Step d) Formation of5-{[{4-[(4-fluorophenyl)ethynyl]benzoyl}(hexyl)amino]methy l}-2- '-vdroxybenzoic acid, N-methyl-D-glucamine (i.e. l-deoxy~l-(methylamino)glύcitol) salt

To a solution of 5-{[{4-[(4-fluorophenyl)ethynyl]benzoyl}(hexyl)amino]methyl} -2- hydroxybenzoic acid (680 mg, 1.44 mmol) in MeOH (20 mL) was added a solution of N- methyl-D-glucamine (280 mg, 1.44 mmol) in water (4 mL). Water (20 mL) was added and the resulting solution was lyophilized to give 820 mg of the title compound as a white powder. HPLC, Rt: 5.13 min (purity: 99.4%). LC/MS, M+(ESI): 475.5, W(ESl): 471.9. Analysis calculated for C29H2SNO4F-C7Hi7NO5-LlH2O: Calculated C 62.80; H 6.91; N 4.07 %. Found: C 62.74; H 6.95; N 4.06 %.

Example 29 : 5-{["{4-[r4-chlorophenyl)ethynyl]benzoyl}(hexyπamino]methyl }-2- hvdroxybenzoic acid, N-methyl-P-glucamine (i.e. l-deoxy-l-fmethyl-

Step a) Formation of4-[(4-chlorophenyl)ethynyl]beϊizoic acid

The title compound was prepared following procedure described in Example 28, step a) from 4-[(4-chloroρhenyl)ethynyl]benzaldehyde (10.2 g, 42.4 mmol, intermediate which may be obtained according to methods disclosed in EP03103780.7). Purification by trituration of the crude product in isopropyl acetate gave 8.50 g (78%) of the title compound as a cream powder. HPLC, Rt: 4.23 min (purity: 88.4%). 1H NMR (DMSO-d^) δ : 13.18 (bra, IH)5 7.96 (d, J =8.3 Hz, 2H), 7.67 (d, J=8.3 Hz, 2H), 7.61 (d, J =8.5 Hz, 2H), 7.51 (d, J =8.5 Hz, 2H).

Step b) 4-[(4-chlorophenyl)ethynyl]-N-[(2,2-dimethyl~4~oxo-4H~l,3-be nzodioxin-6- yl)methyl]-N-hexylbenzamide

The title compound was prepared following procedure described in example 20, step e) from 6-[(hexylamino)methyl]-2,2-dimethyl-4H-l,3-benzodioxin-4-one (648 mg, 2.22 mmol) and 4-[(4-butylphenyl)ethynyl]benzoic acid (330 mg, 1.19 mmol). Purification of the crude product by flash chromatography on silicagel (EtOAc/c-Hex (20/80)) gave 1.12 g (95%) of the title compound. HPLC, Rt: 5.72 min (purity: 99.2%). LC/MS, M+(ESI): 530.1. 1HNMR (CDCl3) δ: 7.52-7.85 (m, 4H), 7.44 (d, J =8.5 Hz, 2H), 7.38 (d, J =8.1 Hz, 2H), 7.31 (d, J =8.5 Hz, 2H), 6.96 (d, J =8.5 Hz, IH), 4.70 (s, 1.5H), 4.47 (s, 0.5H), 3.39 (s, 1.5H), 3.15 (s, 0.5H), 1.21-1.72 (m, 14H), 0.81 (m, 3H).

Step c) Formation of5-{[{4-[(4-chlorophenyl)ethynyl]benzoyl}(hexyl)amino]methy l}-2- hydroxybenzoic acid

The title compound was prepared following the procedure described in example 19, step c) fromN-[(2,2-dimethyl-4-oxo-4H-l,3-benzodioxin-6-yl)methyl3-4 -[(4-chlorophenyl)- ethynyl]-N-hexylbenzamide (1.12 g, 2.1 mmol). 930 mg (90%) of the title compound was isolated as a white foam. HPLC, Rt: 5.23 min (purity: 98.8%). LC/MS, M+(ESI): 474.1, M" (ESI): 487.9. 1HNMR (CDCl3) δ : 10.72 (s, IH), 7.38-7.89 (m, 8H), 7.30 (d, J =8.1 Hz, 2H), 6.96 (d, J =8.3 Hz, IH), 4.69 (s, 1.3H), 4.42 (s, 0.7H), 3.45 (s, 0.7H), 3.15 (s, 1.3H), 1.20-1.63 (m, 8H), 0.81 (m, 3H).

Step d) Formation of5-{[{4-[(4-chlorophenyl)ethynyl]benzoyl}(hexyl)amino]methy l}-2- hydroxybenzoic acid, N-methyl-D~glucamine (Ie. l-deoxy-l-(methylamino)glucitol) salt To a solution of 5-{[{4-[(4-chlorophenyl)ethynyl]benzoyl}(hexyl)amino]methyl} -2- hydroxybenzoic acid (930 mg, 1.9 mmol) in MeOH (20 mL) was added a solution of N- methyl-D-glucamine (370 mg, 1.9 mmol) in water (4 mL). Water (20 mL) was added and the resulting solution was lyopbilized to give 1.195 g of the title compound as a white powder. HPLC, Rt: 5.28 min (purity: 98.9%). LCMS, M+(ESI): 489.7 MXESI): 488.0. Analysis calculated for C29H28NO4CLC7HI7NO5-O-OH2O: Calculated C 62.12; H 6.69; N 4.02%. Found: C 62.07; H 6.78; N 3.97 %.

Example 30: 2-fluoro-5-{hexyir4-fphenylethynyl)ben2yl1amino}benzoic acid, N-methyl-D- glucamine fie, l-deoxy-l-(memylamino')glucitol') salt Step a) Formation of methyl 2-fluoro-5-{[4-(phenylethynyl)benzyl]amino}benzoate

The title compound was prepared following the procedure described in Example 23 step a) using methyl 5-amino-2-fluorobenzoate (500 mg, 2.96 mmol) and 4.- (phenylethynyl)benzaldehyde (Fluorochem, 640 mg, 3.10 mmol). The title compound was obtained as a white powder (717 mg, 68%). HPLC, Rt: 4.78 min (purity: 97.4%). LC/MS, M-(ESI): 358.1. 1H NMR (CDCl3) δ: 7.52-7.48 (m, 4H), 7.32 (m, 5H)3 7.15 (dd, J = 5.3, 3.1 Hz, IH), 6.94 (dd, J = 10.5, 9.2 Hz, IH), 6.72 (m, IH), 4.33 (s, 2H), 3.89 (s, 3H).

Step b) Formation of methyl 2-fluoro-5-{hexyl[4-(phenylethynyI)benzyl]amino}benzoate

The title compound was prepared following the procedure described in Example 23 step b) using methyl 2-fluoro-5-{[4-(phenylethynyl)benzyl]amino}benzoate (213 mg, 0.59 mmol) and hexanal (Aldrich , 0.11 mL, 0.95 mmol). The title compound was obtained as a pale yellow oil (215 mg, 82%). HPLC, Rt: 6.1 min (purity: 94.5%). LC/MS, M+(ESI): 444.2. 1H NMR (CDCl3) δ: 7.51-7.44 (m, 4H), 7.32 (m, 3H), 7.17 (m, 3H), 6.92 (dd, J=9.8, 9.7 Hz, IH), 6.74 (m, IH)3 4.49 (s, 2H)3 3.88 (s, 3H), 3.35 (t, J = 7.5 Hz, 2H), 1.61 (m, 2H), 1.29 (m, 6H)3 0.88 (m, 3H).

Step c) Formation of2-fluoro-5-{hexyl[4-(phenylethynyl)benzyl]amino}benzoic acid

The title compound was prepared following the procedure described in Example 23 step c) using methyl 2-fluoro-5-{hexyl[4-(phenylethynyl)benzyl]amino}benzoate (215 mg, 0.48 mmol). The title compound was obtained as a pale yellow powder (181 mg, 87%). HPLC, Rt: 5.4 min (purity: 94.7%). 1H NMR (CDCl3) δ: 7.51-7.44 (m, 4H), 7.32 (m, 4H), 7.20 (d, J = 7.9 Hz, 2H), 6.98 (dd, J = 9.6, 9.5 Hz, IH), 6.90 (m, IH), 4.51 (s, 2H), 3.38 (t, J = 7.3 Hz, 2H), 1.63 (m, 2H), 1.29 (m, 6H), 0.87 (t, J = 7.0 Hz, 3H).

Step d) Formation of2-fluoro-5~{hexyl[4-(phenylethynyl)benzyl]amino}benzoic acid, N- methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol) salt

The title compound was prepared following the procedure described in Example 24 using 2-fluoro-5-{hexyl[4-(ρhenylethynyl)benzyl]amino}benzoic acid (181 mg, 0.42 mmol). The title compound was obtained as a beige powder (223 mg, 85%). HPLC, Rt: 5.4 min (purity: 94.3°/o). LC/MS, M+(ESI): 430.3, M~(ESI): 428.2.

Example 31 : 5-({4-r(4-cMorophenvπethynyl]benzvUπiexyl')amino*)-2-hvdro xybenzoic acid, N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamrno*)glucitofl salt Step a) Formation of6-[((E)-{4-[(4-chlorophenyl)ethynyl]phenyl}methylidene)ami no]-2,2- dimethyl-4H-l,3-benzodioxin-4-one

A solution of 4-[(4-chlorophenyl)ethynyl]benzaldehyde (2.60 g, 10.9 mmol, intermediate which may be prepared according to methods disclosed in EP03103780.7) and 6-amino- 2,2-dimethyl-4H-l,3-benzodioxin-4--one (2.00 g, 10.36 mmol) in toluene (40 αiL) was heated at reflux for 2 hrs with azeotropic removal of water. Then the temperature was cooled down slowly. A yellow solid precipitated out and MeOH (40 mL) was added. The precipitate was filtered, washed with MeOH (2x) and dried under reduced pressure to give 3.98 g (92%) of the title compound as a yellow powder. 1H NMR (CDCl3) δ: 8.53 (s, IH), 7.90 (d, J= 8.2 Hz, 2H), 7.85 (d, J = 2.5 Hz, IH), 7.64 (d, J = 8.2 Hz, 2H), 7.53 (dd, J = 8.6, 2.5 Hz, IH), 7.50 (d, J = 8.5 Hz, 2H), 7.36 (d, J = 8.5 Hz, 2H), 7.03 (d, J = 8.6 Hz, IH).

Step b) Formation of 6-({4-[(4-chlorophenyl)ethynyl]benzyl}amino)-2,2-dimethyl-4H -l,3- benzodioxin-4-one

A solution of 6-[((E)-{4-[(4-chlorophenyl)ethynyl]phenyl}methylidene)amino ]-2,2- dimethyl-4H-l?3-benzodioxin-4-one (3.73 g, 8.97 mmol), sodium .triacetoxyborohydride (5.70 g, 26.9 mmol) and acetic acid (0.77 mL, 13.5 mmol) in anhydrous DCE (120 mL) was stirred for 48 hrs at it. Then the reaction mixture was diluted with water (150 mL) and an aqueous saturated solution OfNaHCO3 (100 mL) and extracted with DCM (250 mL and 100 mL). The combined organic layers were dried over MgSO4 and evaporated under reduced pressure. The residue was crystallized from a DCM / pentane solution. The solid was filtered, washed with pentane (2x) and dried under reduced pressure to give 3.50 g (93%) of the title compound as a yellow powder. HPLC, Rt: 5.0 min (purity: 98.1%). 1H NMR (CDCl3) δ: 7.51 (d, J = 8.2 Hz, 2H), 7.46 (d, J = 8.5 Hz, 2H), 7.34 (m, 4H), 7.18 (d, J = 2.6 Hz, IH). 6.86 (dd, J = 8.8, 2.6 Hz, IH), 6.81 (d, J = 8.8 Hz, IH), 4.35 (s, 2H), 4.21 (bra, IH), 1.71 (s, 6H). Step c) Formation of 6-({4-[(4-chlorophenyl)ethynyl]benzyl}(hexyl)amino)-2,2-dime thyl- 4H- 1, 3-henzodioxin-4-one

The title compound was prepared following the procedure described in Example 1 step d) using 6-({4-[(4-chloiOphenyl)ethynyl]benzyl}amino)-2,2-dimethyl-4H -l,3-benzodioxin-4- one (3.0 g, 7.18 mmol) and hexanal (1.39 mL, 11.49 mmol). The title compound was obtained as a yellow oil (3.5 g, 97%). HPLC, Rt: 6.3 min (purity: 98.0%). LCMS, M+(ESI): 502.0. 1H NMR (CDCl3) δ: 7.46 (m, 4H), 7.33 (m, 2H), 7.22 (m, 3H), 6.86 (dd, J = 9.0, 3.0 Hz, IH), 6.80 (d, J = 9.0 Hz, IH), 4.52 (s, 2H), 3.37 (t, J = 7.5 Hz, 2H), 1.71 (s, 6H), 1.64 (m, 2H), 1.31 (m, 6H), 0.89 (t, J = 6.6 Hz, 3H).

Step d) Formation of 5-({4-[(4-chlorophenyl)ethynyl]benzyl}(hexyl)amino)-2- hydroxybenzoic acid

To a solution of 6-({4-[(4-chlorophenyl)ethynyl]benzyl}(hexyl)amino)-2,2-dime thyl-4H- l,3-benzodioxin-4-one (3.40 g, 6.77 mmol) in MeOH (150 mL) was added an aqueous solution of NaOH (5.5 mL, 5N). The reaction mixture was stirred at rt for 1.5 hr and a solid precipitated out. Water (250 mL) was added, and then the precipitate was filtered and washed with water (3x). The solid was taken up with MeOH (150 mL), an aqueous solution of NaOH (5.5 mL, 5N) was added and the resulting mixture was heated at 6O0C for 15 hrs. Then an aqueous solution of HCl (10 mL, 5N) and water (400 mL) were added and the mixture was extracted with Et2θ (500 + 2x250 mL). The combined organic layers were s dried over MgSO4 and evaporated under reduced pressure. Purification by crystallization (acetone / water) gave 909 mg (29%) of the title compound as a white powder. HPLC, Rt: 4.5 min (purity: 99.5%). LC/MS, M+(ESI): 462.0, MXESI): 459.9. 1H NMR (CDCl3) δ: 7.55 (d, J=8.3 Hz, 2H), 7.48 (m, 4H), 7.26 (d, J=7.9 Hz, 2H), 7.00 (d, J=2.8 Hz, IH), 6:96 (dd, J=9.0, 2.8 Hz, IH), 6.78 (d, J=9.0 Hz, IH), 4.47 (s, 2H), 3.30 (m, 2H), 1-51 (m, 2H), o 1.24 (m, 6H), 0.83 (m, 3H).

Step e) Formation of5-({4-[(4-chlorophenyl)ethynyl]benzyl}(hexyl)amino)-2- . ■ hydroxybenzoic acid, N-methyl-D-glucamine (Le. l-deoxy-l-(methylamiήo)glucitol) salt

The title compound was prepared following the procedure described in Example 1 step g) using 5 -( {4- [(4-chlorophenyl)ethynyl]benzyl} (hexyl)amino)-2-hydroxybenzoic acid (882 mg, 1.91 mmol) in THF. The title compound was obtained as a pale yellow powder (1054 mg, 84%). HPLC, Rt: 4.5 min (purity: 99.6%). LC/MS, M+(ESI): 462.0, M-(ESl): 460. 0 Example 32 : 5-(hexyl{4-[(4-methoxyphenyl)ethynyl]benzyl}amino)-2-hydroxy benzoic acid. N-methyl-D-glucamine (i.e. l-deoxy-l-fmemylamino*)glucitol)salt Step a) Formation of 6-({4-[(4-methoxyphenyl)ethynyl]benzyl}amino)-2,2-dimethyl-4 H- 1, 3-benzodioxin-4-one

The title compound was prepared following procedure described in Example. 1, step c) from 4-[(4-methoxyphenyl)ethynyl]benzaldehyde (1.31 g; 5.53 mmol, intermediate which may be obtained according to methods disclosed in. EP03103780.7) and 6-amino-2,2-dimethyl- benzo[l,3]dioxin-4-one (1.07 g; 5.53 mmol). The crude (1.7g) . was purified by recrystallisation from MeOH/EtOAc to give 1.23g (54%) of the title compound as a yellow powder. HPLC, Rt : 4.77 min (purity : 77%). 1H NMR (CDCl3) δ: 7.46 (m, 4H), 7.31 (d, J = 7.9 Hz, 2H)3 7.15 (d, J = 2.6 Hz, IH), 6.85 (d, J = 8.5 Hz, 2H), 6.78 (m, 2H), 4.30 (s, 2H), 3.81 (s, 3H), 1.68 (s, 6H).

Step b) Formation qf6-(lιexyl{4-[(4-methoxyphenyl)ethynyl]benzyl}amino)-2,2-d imethyl- 4H- 1, 3-benzodioxin-4-one

To a solution of 6-({4-[(4-methoxyphenyl)ethynyl]benzyl}amino)-2,2-dimethyl-4 H-l,3- benzodioxin-4-one (416 mg; 1.01 mmol) in anhydrous DCE (15 mL) were added hexanal (Aldrich, 181 μl; 1.51 mmol), sodium triacetoxyborohydride (426 mg, 2.01 mmol) and acetic acid (115 μl).The resulting mixture was heated at 70°C under nitrogen atmosphere

for 24h and poured into a saturated aqueous solution of NaHCθ3. The aqueous layer was extracted with DCM (twice) and combined organic layers were washed with brine, dried over magnesium sulfate, filtrated and concentrated. Purification by flash chromatography on silica gel (EtOAc/c-Hex 5:95 then 10:90) gave 520 mg of the title compound (quantitative). HPLC, Rt : 5.82 min (purity : 99.9%).LC/MS, M+ (ESI): 498.7. 1H NMR (CDCl3) δ : 7.43 (d, J = 8.9 Hz, 4H), 7.21 (s, IH), 7.16 (d, J = 8.1 Hz, 2H), 6.74-6.86 (m, 4H), 4.48 (s, 2H), 3.80 (s, 3H), 3.34 (t, J = 7.8 Hz, 2H), 1.68 (s, 6H), 1.61 (m, 2H), 1.27 (s, 6H), 0.86 (m, 3H).

Step c) Formation of5-(hexyl{4-[(4-methoxyphenyl)ethynyl]benzyl}amino)-2- hydroxybenzoic acid

To a solution of 6-(hexyl{4-[(4-me1lioxyplienyl)ethynyl]benzyl}ainino)-2,2-di methyl-4H^ l,3-benzodioxin-4-one (520 mg; 1.05 mmol) in MeOH (20 mL) was added an aqueous solution of NaOH (1.05 mL, 5N). The reaction mixture was stirred at rt for Ih. The yellow precipitate obtained was filtrated and washed with colςl water. It was suspended again in MeOH (20 mL) and aqueous solution of NaOH (2 mL, 5N) and heated at 700C overnight.

The reaction mixture was poured into an aqueous solution of HCl (IN) and extracted with Et2θ. The combined organic layers were washed with brine, dried over magnesium sulfate, filtrated and concentrated. Purification by preparative HPLC using a X-Terra column followed by a recrystallisation in MeOH gave 55 mg (12%) the title compound as a.brown powder. HPLC, Rt: 4.24 min (purity : 95.0%). LC/MS, M+ (ESI): 458.3, M" (ESI) :456.1 1H NMR (CDCl3) δ : 12.70 (bra, IH), 10.20 (brs, IH), 7.46 <d, J = 5.3 Hz, 2H), 7.44 (d, J = 4.5 Hz, 2H), 7.23 (d, J = 7.3 Hz, 2H), 6.98 (m, 4H), 6.78 (d, J = 9.0 Hz, IH), 4.46 (s, 2H), 3.78 (s, 3H), 3.31 (m, 2H), 1.51 (m, 2H), 1.25 (m, 6H), 0.84 (m, 3H).

Step d) Formation of5-(hexyl{4-[(4-methoxyphenyl)ethynyl]benzyl}amino)-2- hydroxybenzoic acid, N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol)salt

The title compound was prepared following procedure described in Examplel, step g) from 5-(hexyl{4-[(4-metiioxyphenyl)e1iιynyl]benzyl}amino)-2-hydr oxyberizoic . acid (55 mg; 0.12 mmol) and N-methyl-D-glucamine (23.5 mg; 0.12 mmol). The title compound was isolated as a beige powder (61 mg, quantitative). HPLC, Rt: 4.21min (purity: 99.8%). LC/MS, M+ (ESI): 458.3, M"(ESI): 456.0.

Example 33 : 5-|"hexyl(4-{ r4-rtrifluoromethyl')plienyl1ethynyl}benzy-Bamino]-2- hydroxybenzoic acid. N-methyl-D-glucamine (i.e. 1-deoxy-l- fmethylamino')glucitol)salt

Step a) Formation of2,2-dimethyl-6-[(4-{[4- (trifluoromethyl)phenyl]ethynyl}beήzyl)amino]-4H-l,3-benzod ioxin-4-oήe

The title compound was prepared following procedure described in example 1, step c) from 4-{[4-(trifluoromethyl)phenyl]ethynyl}benzaldehyde (1.22 g; 4.43 mmol, intermediate which may be obtained according to methods disclosed in EP031O3780.7) and 6-amino- 2,2-dimethyl-benzo[l,3]dioxin-4-one (855 mg; 4.43 mmol). Purification of the crude (2.6g) by precipitation in DCM upon addition of pentane gave 590 mg (30%) of the title compound as a brown solid. HPLC, Rt: 4.76 min (purity: 76.2%). LC/MS, M+ (ESI): 452, M" (ESI): 450.I5 1H NMR (CDCl3) δ: 7.59 (s, 4H), 7.51 (d, J = 7.5 Hz, 2H), 7.34 (d, J = 7.7 Hz, 2H)3 7.15 (s, IH), 6.80 (m, 2H), 4.34 (s, 2H), 1.68 (s, 6H). Purification of the filtrate by flash chromatography on silicagel (EtOAc/c-Hex 10:90 then 20:80) gave another42O mg of the title compound as a yellow powder.

Step b) Formation of6~fάexyI(4-{[4-(trifluoromethyl)phenylJethynyl}benzyl)ami no]~2,2- dimethyl-4H- 1, 3-benzodzoxin-4-one

The title compound was prepared following procedure described in Example 32, step c) from 2,2-dimethyl-6- [(4-{ [4-(trifluoromethyl)phenyl]ethynyl}benzyl)amino]-4H- 1,3- benzodioxin-4-one (427 rng; 0.95 mmol) and hexanal (Aldrich, 170 μl; 1.42 mmol) to give 560 mg of crude. Purification by flash chromatography on silica gel (EtQAc/c-Hex 5:90 then 10:90) gave 395 mg (78%) of the title compound as a brown powder. HPLC, Rt: 6.21 min (purity: 68.5%). 1H NTMR (CDCl3) δ: 7.59 (brs, 4H), 7.47 (m, 2H)5 7.30.(m 3H), 6.76- 6.83 (m, 2H), 4.50 (s, 2H), 3.38 (m, 2H), 1.68 (s3 6H), 1.61 (m, 2H), 1.28 (m, 6H), 0.86 (m, 3H).

Step c) Formation of5-[hexyl(4-{[4~(trifluorometkyl)phenyl]ethynyl}benzyl)amin o]-2- hydroxybenzoic acid

The title compound was prepared following procedure described in Example 32, step c) from 6-[hexyl(4-{[4-(triflxioromethyl)phenyl]ethynyl}benzyl)amino ]-2,2-dimethyl-4H- 1 ,3- benzodioxin-4-one (395 rag, 0.74mmol). Purification by preparative HPLC using aX-Terra column yielded 103 mg (28%) of the title compound. HPLC, Rt: 4.62 min (purity: 96.6%). LC/MS: M+(ESI): 496.1, MXESI): 494.0. 1H NMR (CDCl3) δ : 7.86 (s, IH), 7.56 (m, 5H)3 - 221 -

7.37 (d, J = 7.9 Hz, 2H), 7.13 (d, J = 7.9 BLz, 2H), 6.99 (d, J = 9.0 Hz, IH), 4.59 (brs, 2H), 3.56 (brs, 2H), 1.49 (brs, 2H), 1.19 (m, 6H)^ 0.80 (m, 3H).

Step d) Formation of5-[hexyl(4-{[4-(triflnoromethyl)phenyl]ethynyl}benzyl)amin o]-2- hydroxybenzoic acid, N-methyl-D-glucamixie (i.e. l-deoxy-l-(methylamino)glucitol)salt

The title compound was prepared following procedure described in example 1,. step g) from 5-[hexyl(4-{[4-(trifluoromethyl)phenyl]ethynyl}benzyl)amino] -2-liydroxybenzbic acid (92 mg; 0.19 mmol) to give 121 mg of a beige powder. Rt: 4.63 min (purity:.98.8 %). LCMS, M+ (ESI): 496.1, M' (ESI) : 494.0.

Example 34: 5-[l4-[("4-butylpb.envπethynyπbenzyl}fcyclopentylmemvBamin oi-2- fluorobenzoic acid. N-methyl-D-glucamine (ϊ.e. 1-deoxy-l-

Step a) Formation of 5-{[4-(4-butyl-phenyrlethynyl)-benzyl]-cyclopentylmethyl-arn ino}-2-, fluoro-benzoic acidmethyl ester

A solution of methyl 5-({4-[(4-butylphen>rl)ethynyl]benzyl}amino)-2-fluorQbenz oate (800 mg, 1.93 mmol) in DCE (16 mL) was treated with cyclopentanecarboxaldehyde (Aldrich, 283 mg, 2.89 mmol) then with sodium triacetoxyborohydride (1.22 g, 5.78 mmol). The resulting mixture was stirred at 70° C for 2h. The reaction mixture was allowed to cool down, dichloromethane (40 mL) was added and the organic layer was washed twice with water and with brine, dried over magnesium sulfate, filtered and concentrated. Purification by flash chromatography on silicagel afforded the title compound as a colorless oil (590 mg, 60%). HPLC, Rt: 6.47 min (purity: 97.1%.), LC/MS, M+(ESI): 498.1. 1H NMR (CDCl3) δ: 7.42 (m, 4H), 7.22 (m, IH), 7.14 (m, 4E), 6.92 (m, IH), 6.75 (m, IH), 4.55 (s, 2H), 3.89 (s, 3H), 3.33 (d, 2H), 2.60 (t, J = 7.7 Hz, 2H), 2.29 (m, IH), 1.65 (m, 2H), 1.70- 1.46 (m, 6H), 1.42-1.15 (m, 6H), 0.91 (t, J = 7.3 Hz3 3H).

Step b) Formation of 5-{[4-(4-Butyl-phenylethynyl)-benzyl]-cyclopentylmethyl-amin o}-2- fluoro-benzoic acid

5-{ [4-(4-Butyl-phenylemynyl)-benzyl]-cyclopentybmethyl-amino}-2 -fluoro-benzoic acid methyl ester (590 mg, 1.15 mmol) was dissolved in 10 mL of EtOH, sodium hydroxide (692 μl; 5.0 M; 3.56 mmol) was added and the reaction mixture stirred at 65 0C for 3h. The reaction mixture was allowed to cool down and RtOAc (50 mL) was added. The organic layer was washed three times with HCl (IN), dried over magnesium sulfate, filtered and concentrated to give 491 mg (88%) of the title compound as a white solid. HPLC, Rt: 6.03 min (purity: 96.7%), M+(ESI): 484.3, M-(ESI): 482.0. 1H NMR (CDCl3) δ: 7.43 (m, 4H), 7.31 (m, IH), 7.14 (m, 4H), 6.95 (t, J = 9.5 Hz, IH), 6.80 (m, IH), 4.56 (s, 2H), 3.36 (d, 2H), 2.60 (t, J = 7.5 Hz, 2H), 2.30 (m, IH), 1.76 (rn, 2H), 1.70-1.48 (m, 6H), 1.42-1.15 (m, 4H), 0.91 (t, J = 7.4 Hz5 3H).

Step c) Formation of5-[{4-[(4-butylphenyl)ethynylJbenzyl}(cyclopentylmethyl)am ino]-2- fluorobenzoic acid, N-methyl-D-glucamine (i.e. l-d&oxy-l-(methylamino)glucitol)salt

The title compound was prepared following the procedure described in Example 1 step g) using 5-{[4-(4-butyl-phenylethynyl)-benzyl]-cyclopentyhnethyl-amin o}-2-fluoro-benzoic acid (457 mg, 0.94 mmol). The title compound was obtained as a white powder (576 mg, 90%). HPLC, Rt: 6.20 min (purity: 98.4%). LC/MS, M+(ESI): 48-4.2, MXESI): 482.2.

Example 35: 5-[{4-[r4-butylphenyl)ethynyl]ben2yl}(33-dimethylbntyl)ainin o]-2- fluorobenzoic acid. N-methyl-D-glucamine (i.e. l-<ieoxy-l- ( methylamino^glucitoDsalt

Step a) Formation of methyl " 5-[{4-[(4-bυtylp^ιenyl)ethynyl]henzyl}(3,3~ dimethylbutyϊ)amino]-2-fluorobenzoate

Methyl 5-({4-[(4-butylphenyl)ethynyl]benzyl}amino)-2-fluorobenzoate (800 mg, 1.93 mmol) was dissolved in DCE (15 mL), then 3,3-dimethyl-buty3raldehyde (289 mg, 2.89 mmol) was added followed by sodium triacetoxyborohydri.de <Aldrich, 1224 mg, 5.78 mmol) and the resulting mixture stirred at 700C for 2h. Reaction was allowed to cool down, dichlorometihiane (40 mL) was added and the organic layer was washed twice with H2O and once with brine, dried over MgSO4, filtered and concentrated under reduced pressure. Purification on silicagel afforded 541 mg (56%) of the title compound as a colorless oil. HPLC, Rt: 6.42 min, purity: 98.3%); LC/MS, M+(ESI): 500.4; 1DH NMR (CDCl3) δ: 7.44 (m, 4H), 7.17 (m, 5H), 6.93 (t, J = 9.6 Hz3 IH), 6.73 (m, IH), 4-46 (s, 2H), 3.88 (s,.3H), 3.40 (m, 2H), 2.60 (t, J = 7.7 Hz, 2H), 1.70-1.46 (m, 4H), 1.34 (m, 2H), 0.99-0.87 (m, 12H).

Step b) Formation of 5-[{4-[(4-butylphenyl)ethynyl]benzyl}(3,3-dimetfovlbutyl)ami nol-2- fluorobenzoic acid

Methyl 5-[{4-[(4-butylphenyl)ethynyl]benzyl}(3,3-dimethylbutyl)atni noJ-2-fluorobenzoale (541 mg; 1.08 mmol) was dissolved in 10 mL of EtOH and sodium hydroxide (649.63 μl; 5.00 M; 3.25 mmol) was added. The reaction mixture was stirred at 65 0C for 2h30. The reaction mixture was allowed to cool down and EtOAc (50 mL) was acϋded. The organic layer was washed three times with HCl (IM), dried over MgSO4, filtered and concentrated under reduced pressure to afford 450 mg (86%) of the title compound as a yellow solid. HPLC, Rt: 5.97 min (purity: 98.9%); LC/MS M+(ESI): 486.2, M-(ESI)= 484.0; 1H NMR (CDCl3) δ: 7.44 (m, 4H), 7.32 (m, IH), 7.20 (d, J = 9.8 Hz, 2H,), 7.14 (d, J = 8.3 Hz, 2H5), 6.97 (m, IH)5 6.91-6.75 (m, IH), 4.48 (s, 2H), 3.42 (m, 2H), 2.60 (t, J = 7.7 Hz, 2H), 1.65- 1.46 (m,4H), 1.40-1.28 (m, 2H), 0.99-0.87 (m, 12H).

Step c) Formation of5~[{4-[(4-butylphenyl)ethynyl]bemyl}(3,3-dimethylbτΛtyl) amino]-2- fluorobenzoic acid, N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)^lucitol)salt

The title compound was prepared following the procedure described in Example 1 step g) using 5-[{4-[(4-butylphenyl)ethynyl]benzyl}(3,3-dimethylbutyl)amin o]-2- fluorobenzoic acid. (443 mg, 0.91 mmol). The title compound was isolated as a white powder (9-4%). HPLC, Rt: 6.11 min (purity: 98.5%). LC/MS, M+(ESI): 486.4, JVT(ESI): 484.2.

Example 36 : 5-ffcyclopentylmelfaylK4-[(4-methoxyphenyl)ethynyl]ben2yl}am inoV2- hvdroxybenzoic acid. N-methyl-D-glucamine fi.e. 1-deoxy-l- fmethylaminolghicitoDsalt

Step a) Formation of6-((cyclopentylmethyl){4-[(4-methoxyphenyl)ethynyl]benzyl} amirt£>)- 2,2-dimethyl-4H-l,3-benzodioxin-4-one

The title compound was prepared following procedure described in example 23, step b) from 6-({4-[(4-memoxyphenyl)ethynyl]ben2yl}amino)-2,2-dimethyl-:4 H-l,3-benz()di(>xin- 4-one (398 mg; 0.96 mmol) and. cyclopentanecarboxaldehyde (Aldrich, 141.71 mg; 1.44 mmol). The crude (854 mg) was purified by flash chromatography on silicagel (EtOAc/cHex, gradient 10:90 to 20:80) to give 454 mg (95%) of the title compound as a yellow foam. Rt: 5.85 min (purity: 96.8 %). LC/MS, M+ (ESI): 496.2. 1H NMR (CDCl3) δ: 7.47 (m, 4H), 7.18 (d, J = 8.1 Hz, IH), 6.89 (d, J = 8.9 Hz, 2H), 6.87 (m, 3H), 6.79 (d, J = 9.0 Hz, IH), 4.59 (s, 2H), 3.84 (s, 3H), 3.36 (d, J = 7.1 Hz, 2H), 2.32 (m, IH), 1.56-1.65 (m, 6H), 1.45 (s, 6H), 1.26 (m, 2H).

Step b) Formation ofmethyl 5-((cyclopentylmethyl){4-[(4~tnethoxyphenyl)ethynyl]r benzyl}amino)-2-hydroxybenzoate The title compound was prepared following procedure described in example I3 step e) from 6-(cyclopen1ylmetijyl){4-[(4-memoxyphenyl)ethynyl]benzyl}amm o)-2,2-dmiethyl-4H-l,3- benzodioxin-4-one (438 mg; 0.88 mmol) to give 239 mg (56%) of an orange solid. Rt: 4.71 min (purity: 82.6 %).

Step c) Formation of 5-((cyclopentylmethyl){4-[(4-methoxyphenyl)ethynyl]benzyl}am ino)~ 2-hydroxybenzoic acid

To a solution of ethyl 5-((cyclopentylmethyl){4-[(4-methoxyphenyl)ethynyl]- benzyl}amino)-2-hydroxybenzoate (200 mg; 0.43 mmol) was dissolved in THF (4 mL) and water (1.00 mL) was added LiOH (178 mg; 4.26 mmol). The mixture was then heated in: MW for 2500s at 100 0C. It was poured into a IN solution of HCl and extracted twice with

EtOAc. The combined organic layers were dried over magnesium sulfate,, filtered . and concentrated to give 225 mg of a yellow oil. The oil was suspended in methanol and-, triturated to give 140 mg (72%) of the title compound as a yellow powder. Rt: 4.08 min (purity: 99.1 %), LCMS: M+(ESI): 456.0, M" (ESI): 454.2.

Step d) Formation of 5-((cyclopentylmethyl){4-[(4-methoxyphenyl)ethynyl]benzyl}am ino)- 2-hydroxybenzoic acid, N-methyl-D-glucamine (i.e. l-deoxy-l-(methyϊamino)glucitol)salt

The title compound was prepared following procedure described in Example 1, step g) from 5-((cyclopentylmethyl){4-[(4-methoxyphenyl)ethynyl]benzyl}am ino)-2- hydroxybenzoic acid (140 mg; 0.31 mmol) and N-methyl-D-glucamine (60 mg; 0.31 mmol) to give 198 mg of a white powder. Rt: 4.11 min (purity: 100 %), LC/MS: M+(ESI): 455.4, NT(ESI): 454.0. Analysis calculated for C29H29NO4- C 7Hi7NO5-OJ H2O: calculated C 65.54; H 7.18; N 4.25 %; Found: C 65.31; H 7.04; N 4.26 %.

Example 37: 5-({4-[r4-butylphenvπethvnyl]benzyl}fethyl')aminoV2-fluorob enzoic acid. N- methyl-D-glucamine (i.e. l-deoxy-l-fmethylainino')ghicitol') salt

Step a) Formation of methyl 5~({4-[(4-butylphenyl)ethynyl]benzyl}(ethyl)amino)-2- fluorobenzoate

The title compound was prepared following the procedure described in Example 23 step b) using methyl 5-({4-[(4-butylphenyl)ethynyl]benzyl}amino)-2-fiuorobenzoate (prepared in Example 23, step a) and ethanal. The title compound was obtained as a pale yellow oil (215 mg). HPLC, Rt: 5.8 min (purity: 98.9%).

Step b) Formation of5-({4-[(4-butylphenyl)ethynyl]benzyl}(ethyl)amino)-2-fluor obenzoic acid

The title compound was prepared following the procedure described in Example 23 step c) using methyl 5-({4-[(4-butylphenyl)ethynyl]ben2yl}(ethyl)amino)-2-fluorob enzoate (293 mg, 0.66 mmol) in EtOH. The title compound was obtained as a white powder (258 mg, 91%). HPLC, Rt: 5.0 min (purity: 99.2%). LCMS, MXESI): 428.0. 1H NMR (CDCl3) δ: 7.48 (d, J = 7.9 Hz, 2H), 7.44 (d, J = 7.9 Hz, 2H), 7.32 (m, IH), 7.22 (d, J = 7.9 Hz, 2H), 7.16 (d, J = 7.9 Hz, 2H), 6.99 (dd, J = 10.2, 9.4 Hz, IH), 6.84 (m, IH), 4.51 (s, 2H), 3.50 (q, J = 6.8 Hz, 2H), 2.62 (t, J = 7.6 Hz, 2H), 1.61 (m, 2H), 1.36 (m, 2H), 1.22 (t,- J = 6.8 Hz5 3H), 0.93 (t, J = 7.4 Hz, 3H).

Step c) Formation of5-({4-[(4-hutylphenyl)ethynyl]benzyl}(ethyl)amino)-2-fluor obenzoic acid, N-methyl-D-ghicamine (i.e. l-deoxy-l-(methylamino)glucitol) salt

The title compound was prepared following the procedure described in Example 24 using 5-({4-[(4-butylρhenyl)ethynyl]benzyl}(ethyl)amino)-2-fluoro benzoic acid (239 mg, 0.56 mmol). The title compound was obtained as a pale yellow powder (267 mg, 77%). HPLC, Rt: 5.0 min (purity: 99.1%). LC/MS, M-(ESI): 428.1.

Example 38 : S-(hexyH4-[(4-propylphenyDethynynbenzyl}amino)-2-hydroxybenz oic acid . N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino')glucitol')salt

Step a) Formation of 2,2-dimethyl-6-({4-[(4-propylphenyl)ethynyl]benzyl}amino)-4H -l,3- benzodioxin-4-one The title compound was prepared following procedure described in Example 1, step c) from 4-[(4-propylphenyl)ethynyl]benzaldehyde (1.53 g; 6.16 mmol) and 6-ammo-2,2-dirnethyl- benzo[l,3]diox in-4-one (1.19 g; 6.16 mmol). Purification of the yellow solid (2.4 g) s obtained by flash chromatography using silica gel (EtOAc:c-Hex 10:90 to 20:80) gave 660 mg (25%) of the title compound as a yellow solid. BDPLC, Rt: 5.48 min (purity: 72.4%), 1H NMR ((CDCl3) δ: 7.47 (d, J = 7.5 Hz, 2H), 7.41 (d, J = 8.1 Hz, 2H),: 7.31 (d, J = 8.1 Hz, 2H), 7.08 (m, 3H), 6.70-6.79 (m, 2H), 4.25 (s, 2H), 2.57 (t, J = 7.6 Hz5 2H), 1.62 (s, 6H), 1.55 (m, 2H), 0.86 (t, J = 7.3 Hz, 3H).

o Step b) Formation of 6-(hexyl{4-[(4-propylphenyl)ethynyl]benzyl}amino)-2j2-dimeth yl- 4H- 1, 3-benzodioxin-4-one

The title compound was prepared following procedure described in Example 23, step b) from 2,2-dimethyl-6-({4-[(4-prdpylphenyl)ethynyl]benzyl}arnino)-4 H-l,3-benzodioxin-4- 5 one (660 mg; 1.55 mmol) and hexanal (Aldrich, 279.41 μl, 2.33 mmol). Purification of the crude (880 mg) by flash chromatography using silica gel (EtOAc/c-Hex, 5:95 then 10:90) gave 590 mg (75%) of the title compound as a beige powder. HPLC, Rt.: 6.37min (purity: 61.9%), 1H NMR (CDCl3) δ: 7.42 (m, 4H), 7.12-7.19 (m, 5H), 6.78 (m, 2H), 4.48 (s, 2H), 3.34 (t, J = 7:6 Hz, 2H), 2.57 (t, J = 7.8 Hz, 2H), 1.68 (s, 6H), 1.61 (m, 4H), 1.24 (m, 6H), 0 0.91 (t, J = 7.3 Hz, 3H), 0.86 (t, J = 6.7 Hz, 3H). Step c) Formation of methyl 5-(hexyl{4-[(4-propylphenyl)ethynyl]benzyl}amino)-2- hydroxybenzoate

The title compound was prepared following procedure described in example 1, step e) from 6-(hexyl{4-[(4-propylphenyl)ethynyl]benzyl}amino)-2,2-dimeth yl-4H-l,3-beiizo-dioxin-4- one (590 mg, 1.16 mmol) and isolated as a yellow powder (469 mg, 84%). HPLC, Rt: 5.32 miή (purity: 97.1%), LC/MS: M+(ESI): 484.9.

Step d) Formation of 5-(hexyl{4-[(4-propylphenyl)ethynyl]benzyl}amino)->2- hydroxybenzoic acid

The title compound was prepared following procedure described in example 36, step c) from methyl 5-(hexyl{4-[(4-propylphenyl)ethynyl]beri2yl}amino)-2-hydroxy benzoate (450 mg; 0.93 mmol) and isolated as a beige solid (313 mg, 72%). HPLC, Rt: 4.75 min (purity: 97.9%), LCMS3 M+(ESI): 470.5, MT(ESI) : 468.1, 1H NMR (DMSO) δ: 13.7 (bra, IH), 11.55 (brs, IH), 7.44 (m, 4H), 7.24 (m, 4H), 6.99 (m, 2H), 6.78 (d, J = 9.0 Hz, IH), 4.47 (s, 2H), 3.33 (m, 2H), 2.56 (t, J = 7.5 Hz5 2H), 1.57 (m, 4H), 1.24 (m, 6H), 0.87 (t, J = 7.3 Hz, 3H), 0.85 (m, 3H) . Step e) formation of 5-(hexyl{4-[(4-propyJphenyl)ethynyl]benzyl}amino)-2-hydroxyb enzoic acid, N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol) salt

The title compound was prepared following procedure described in example 1, step g) from 5-(hexyl{4-[(4-propylphenyl)ethynyl]benzyl}amino)-2-hydroxyb enzoic acid (307 mg; 0.65 mmol) and was isolated as a beige solid (370 mg). HPLC, Rt: 4.74 min (Purity: 99.1%), LC/MS, M" (ESI): 468.2 Analysis calculated for C3iH35NO3.C7Hi7NO5.0.5 H2O: calculated C 67.73; H 7.93; N 4.16%; Found: C 68.01; H 7.82; N 4.03 %.

Example 39: 5-r(4-|'(4-butylρhenyl)ethy]αyl1benzyl>(hexyπamino]-2- fluorobenzoic acid. lysine salt

To a solution of 5-[{4-[(4-butylphenyI)ethynyl]benzyl}(hexyl)amino]-2-fluorob eiizoic acid (300 mg, 0.62 mmol) in THF (3 mL) was added a solution ofL-lysine (91 mg, 0.62 mmol) in water (2 mL). Then water (30 mL) was added and the resulting solution was lyophilized to give 246 mg (63%) of the title compound as a white powder. HPLC, Rt: 6.0 min (purity: 98.7%). LC/MS, M+(ESI): 486.3, M'(ESI): 484.3.

Example 40: 5-[(4-rf4-butylphenyl)ethvnγl]ben2yl}fhexyl)amino]-2-fluoro benzoic acid. tromethamine (i.e. (2-amino-2-hvdroxymethyl)-1.3-propanediol) salt r l32-

To a solution of 5-[{4-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amino]-2-fluorob enzoic acid (300 mg, 0.62 mmol) in THF (3 mL) was added a solution of txis(hydroxymethyl)amino methane (75 mg, 0.62 mmol) in water (2 mL). Then water (30 mL) was added and the resulting solution was lyophilized to give 362 mg (96%) of the title compound as a white powder. HPLC, Rt: 6.0 min (purity: 98.0%). LCMS, JVE+(ESI): 486.3, M"(ESI):-484.2.

Example 41: 5-[{4-|T4-butylphenyl)ethynyl]benzyl}('pentyl)amino'l-2:-flu orobenzoic acid. N-methyl-D-glucamine (i.e. l-deoxy-l-fmemylammo)glucitol) salt

Step a) Formation of methyl 5-[{4-[(4-butylphenyl)ethynyl]benzyl}(pentyl)amino]-2- fluorobenzoate

The title compound was prepared following procedure described in example 23, step b) from5-({4-[(4-butylphenyl)eth.ynyl]ben2yl}amino)-2-fluoroben zoate (305 mg; 0.73 mmol) and valeraldehyde (Aldrich, 195 μl; 1.84 mmol). Purification of the crude by flash chromatography using silicagel (c-Hex-EtOAc, 90:10) gave 230 mg (65%) of the title compound as a yellow oil. HPLC, Rt: 6.44 min (purity = 98.4%). 1H NMR (CDCl3) δ: 7.44 (d, J = 8.7 Hz, 2H), 7.41 (d, J = 9.0 Hz, 2H), 7.15 (d, J = 7.5 Hz, 2H), 7.13 (d, J = 7.9 Hz, 2H)5 6.90 (d, J = 9.8 Hz3 2H), 6.65 (m, IH), 4.43 (s, 2H), 3.82 (s, 3H), 3.29 (t, J = 7.5 Hz, 2H), 2.54 (t, J = 7.7 Hz5 2H), 1.55 (m, 4H), 1.25 (m, 6H), 0.85 (m, 6H).

Step b) Formation of 5-[{4-[(4-butylphenyl) ethynyl] benzyl) (pentyl)amino]-2- fluorobenzoic acid

The title compound was prepared following procedure described in .example 23, step c) from methyl 5-[{4-[(4-butylphenyl) ethynyl]benzyl}(pentyl)amino]-2-fluorobenzoate (330 mg; 0.68 mmol) and obtained quantitatively (140 mg) as a yellow powder. HPLC, Rt: 5.82 min (purity = 97%). LC/MS, M-(ESI): 470.2. 1HNMR (CDCl3) δ: 7.46 (d, J = 8.2 Hz, 2H), 7.42 (d, J = 8.2 Hz, 2H), 7.15 (m, 5H)3 6.95 (m, IH), 6.78 (m, IH)5 4.52 (s,«2H), 3.38 (t, J = 7.7 Hz, 2H)5 2.61 (t, J = 7.5 Hz, 2H), 1.62 (q, J = 7.6 Hz5 6H), 1.35 (m, 4H)3 0.92 (m, 6H).

Step c) Formation of methyl 5-[{4-[(4-butylphenyl)ethynyl]benzyl}(pentyl)amino]-2- fluorobenzoate, N-methyl-D-glucamine salt (i.e. l-deoxy-l-(methylamino)glucitol) salt

The title compound was prepared following procedure described in example 24 from 5-[{4- [(4-butylρhenyl) ethynyl]benzyl}(pentyl)amino]-2-fluorobenzoic acid (130 mg; 0,28 mmol) and N-methyl-D-glucamine (54 mg; 0.28 mmol) and obtained quantitatively as a white powder. HPLC5 Rt: 5.79 min (purity = 99.5 %). LC/MS, M-(ESI): 470.2. Analysis calculated for C3IH34NO2F- C7Hi7NO5- 2.0 H2O: calculated C 64.94%5H 7.89%5N 3.99%; Found: C 64.95%5H 7.46%3N 3.91%. Example 42: 5-F-[4-[f4-bυtylplieiiyl)ethynyl1ben2ryl}(rnetfayl)amino]-2 -fluorobenzoic acid

Step a) Formation ofmethyl 5-[{4-[(4-butylphenyl)ethynyl]benzyl}(methyl)amino]-2- fluorobenzoate

A solution of methyl 5-({4-[(4-butylρhenyl)ethynyl]ben2yl}amino)-2-fluorobenzoat e (305 mg; 0.73 mmol), formaldehyde (Aldrich, 50 μl;1.84 mmol) and formic acid (2.5 mL) was stirred under microwaves at 100° C for 5 min. The reaction mixture was then poured into

an aqueous solution of NaOH IM and extracted twice with EtOAc. The combined organic layers were washed with brine, dried over magnesium sulfate, filtrated .and concentrated. Purification of the crude (257 mg, yellow oil) by flash chromatography on silicagel afforded 70 mg of the title compound as a yellow powder. HPLC, Rt: 5.84. min (purity = 100%): 1H NMR (CDCl3) δ: 7.4 (m, 4H), 7.3 (s, IH), 7.2 (m, 4H), 6.9 (t, J = 7.8 Hz3 IH), 6.75 (m, IH), 4.4 (s, 2H), 2.92 (s, 3H), 2.5 (t, J = 7.7 Hz, 2H), 1.5 (m, 2H), 1.25 (m, 2H), 0.8 (t, J = 7.53 Hz, 3H).

Step b) Formation of5-[{4-[(4-butylphenyl)ethynyl]benzyl}(methyl)amino]-2-fluo robenzoic acid To a solution of methyl 5-[{4-[(4-butylphenyl) ethynyl]benzyl}(methyl)amino]-2- fluorobenzoate (66 mg, 0.15 mmol) in 3 mL of anhydrous THF were added Lithium Hydroxide monohydrate (65 mg;1.54 mmol) and water (lmL).The reaction mixture was stirred under micro waves at 1000C for 3500 s. Then an aqueous solution of HCl was

added; the residue was extracted with EtOAc. The combined organic layers were washed with brine, dried over magnesium sulfate, filtrated and concentrated to give 37 mg of the title compound as a white solid. . HPLC, Rt: 5.66 min (purity = 93.20%). LC/MS, M" (ESI): 414.5. 1H NMR (CDCl3) δ: 7.40 (m, 4H), 7.31 (s, IH)5 7.20 (m, 4H), 6.92 (t, IH), 6.75 (m, IH), 4.42 (s, 2H), 2.92 (s, 3H), 2.54 (t, J = 7.7 Hz, 2H)3 1.50 (m, 2H), 1.25 (m, 2H), 0.82 (t, J= 7.5 Hz, 3H).

Example 43: 5-|'f4-r(4-butylphenyl)etfaynyllbenzvU(cyclopropylrxiethyl') aminol-2- fluorobenzoic acid, N-methyl-D-glucamine (i.e. 1-deoxy-l- (methylaminoMucitoPsalt

Step a) Formation of methyl 5-[{4-[(4- butylphenyl)ethynyl]benzyl}(cyclopropylmethyl)amino]-2-fluor obenzoate

The title compound was prepared following procedure described in example 23, step b) from methyl 5-({4-[(4-butylρhenyl)ethynyl]benzyl}amino)-2-fluorobenzoat e (326 mg; 0.78 mmol) and cyclopropanecarboxaldehyde (Aldrich, 87.94 μl, 1.18 mmol). Purification of the crude.by preparative HPLC using a X-Terra column gave 200 mg (54%). of the title compound as a beige oil. HPLC, Rt: 5.91 min (purity: 99.7%), LCMS, M+(ESI): 470.4, 1H NMR (CDCl3) δ: 7.66 (m, IH), 7.39 (d, J = 7.9 Hz5 4H), 7.00-7.17 (m, 6H)3 4.62 (s, 2H), 3.93 (s, 3H), 3.44 (m, 3H), 2.59 (t, J = 7.7 Hz, 2H), 1.57 (m, 2H), 1.31 (m, 2H), 0.90 (t, J = 7.2 Hz, 3H), 0.53 (d, J = 7.2 Hz, 2H), 0.24 (m, 2H).

Sep b) Formation of5-[{4-[(4-butylphenyl)ethynyl]benzyl}(cyclopropylmethyl)am ino]-2- fluorobenzoic acid

The title compound was prepared following procedure described in example 36, step c) from methyl 5-[{4-[(4-butylphenyl)ethynyl]benzyl}(cyclopropylmethyl)amin o]-2- fluorobenzoate (200 mg; 0.43 mmol) and obtained quantitatively (200 mg) as a white powder. HPLC, Rt: 5.45 min (purity: 97.7%), LC/MS, M"(ESI): 454.1, 1H NMR (MeOD) 6: 7.24-7.42 (m, 5H), 7.22 (d, J = 7.9 Hz5 2H), 7.15 (d, J = 7.7 Hz, 2H), 7.01 (d5 J = 7.9 Hz, 2H)54.64 (s, 2H), 3.36 (d, J = 6.4 Hz, 2H), 2.59 (t, J = 7.9 Hz5 2H), 1.57 (m, 2H), 1.34 (m; 2H), 1.21 (m, IH), 0.91 (t, J = 7.3 Hz, 3H), 0.50 (m, 2H), 0.21 (m, 2H).

Step c) Formation of5-[{4-[(4-butylphenyl)ethynyl]benzyl}(cyclopropylmethyl)am ino]-2- fluorobenzoic acid, N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol) salt

The title compound was prepared following procedure described in example 24 from 5-[{4- [(4-butylphenyl)ethyQyl]benzyl}(cyclopropylmethyl)amπio]-2- fluorobenzoic acid (200 mg; 0.44 mmol) and N-methyl-D-glucamine (86 mg; 0.44 mmol) and obtained quantitatively as a brown powder. HPLC, Rt: 5.35 mϊn (purity: 98.7%), LC/MS, M"(ESI) : 454.1. Analysis calculated for C30H30NO2F- C7Hi7TNO5-0.5 CH2C12-3.O H2O: calculated C 60.27%,EE 7.28%,N 3.75%; Found: C 60.50%5H 6.96%,N 3.92%.

Example 44: S-lbuiyl^-φhenylethyriyDbenzyljaminol^-fluorobenzoic acid, N-methyl-D- glucamine Ci.e. l-deox.'v-l-fmethylamino^glucitol') salt Step a) Formation ofmethyl 5-{butylf4-(phenylethynyl)benzyl]amino}~2-fluorobenzoate A solution of methyl 5-arαino-2-fluorobenzoate (500 mg, 2.96 mmol), 4- (phenylethynyl)beαzaldehyde (610 mg, 2.96 mmol) and acetic acid (0.25 mL, 4.40 mmol) in toluene (20 mL) was heated under reflux for 3 h with azeotropic removal of water. Then the solvent was removed by distillation at atmospheric pressure and replaced by anhydrous DCE (20 mL). Butanal (Fluka, O.66 mL, 7.39 mmol), sodium triacetoxyborohydride (1880 mg, 8.87 mmol) and acetic acid (0.25 mL, 4.40 mmol) were added and the resulting mixture was heated at 7O0C After 45 min, an additional amount of sodium triacetoxyborohydride (630 mg, 2.96 mmol) was added. After 45 min, the reaction mixture was diluted with water (40 mJL) and extracted with DCM (3x20 mL). The combined organic layers were dried over MgSO4 and the solvents were removed under reduced pressure. Purification by flash chromatography on silicagel (cHex/EtOAc) gave 924 mg (75%) of the title compound as a. colorless oil. HPLC5 Rt: 5.6 min (purity: 99.8%). LC/MS, M+(ESI): 416.1. 1H NMR (CDCl3) δ: 7.51-7.44 (m, 4H), 7.32 (m, 3H), 7.17 (m, 3H), 6.92 (dd, J = 9.8, 9.7 Hz, IH), 6.73 (no, IH), 4.49 (s, 2H), 3.88 (s, 3H), 3.36 (t, J = 7.2 Hz, 2H), 1.60 (m, 2H), 1.34 (m, 2H), 0.93 (t, J = 7.2 Hz, 3H).

Step b) Formation of5~{butyl[4-(phenylethynyl)benzyl]amino}-2-fluorobenzoic acid

The title compound was prepared following the procedure described in Example 23 step c) using methyl 5-{butyl[4-(phenylethynyl)benzyl]amino}-2-fluorobenzoate (924 mg, 2.22 mmol). The title compound was obtained as a sticky colorless oil (776 mg, 87%). HPLC, Rt: 4.9 min (purity: 99.8%). LC/MS, M-(ESI): 400.2. 1H NMR (CDCl3) δ: 7.54-7.48 (m, 4H), 7.35 (m, 3H), 7.29 (dd, J = 5.6, 3.7 Hz, IH), 7.20 (d, J = 8.0 Hz5 2H), 6.98 (dd, J = 10.6, 9.3 Hz, IH), 6.79 (m, IH), 4.54 (s, 2H), 3.41 (t, J = 7.4 Hz, 2H), 1.64 (m, 2H), 1.38 (m, 2H), 0.96 (t, J = 7.2 Hz, 3H).

Step c) Formation of 5-{butyl[4-(phenyleihynyl)benzyl]amino}-2-fluorobenzoic acid, N- s meihyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol} salt

The title compound was prepared following the procedure described in Example 24 using 5-{butyl[4-(phenylethynyl)benzyl]amiηo}-2-fluorobenzoic sacid (762 mg,. 1.90 mmol). The title compound was obtained as a white powder (1045 oig, 92%). HPLC, Rt: 4.8 min o (purity: 100%). LC/MS, M+(ESI): 402.1, MXESI): 400.1.

Example 45: 2-fluoro-5--(r4-(phenylethynyl)benzyl]('propyl>amiiio}ben zoic aciα. JΝ-mettiyl- D-glucamine (i.e. l-deoxy-l-(methylamiDo)g:lucitol) salt Step a) Formation of methyl2~fluoro-5-{[4~(phenylethynylJbenzyl](propyl)- s amino}benzoate

The title compound was prepared following the procedure described in Example 44 step a) using methyl 5-amino-2-fluorobenzoate (500 mig, 2.96 mmol), 4- (phenylethynyl)benzaldehyde (610 mg, 2.96 mmol) and propanal (Aldrich, 540 μL, 7.39 mmol). The title compound was obtained as a sticky colorless oil (62S mg, 53%). HPLC, Rt: 5.4 min (purity: 99.1%). LC/MS, M+(ESI): 402.2. 1H NMR (CDCl3) δ: 7.51-7.44 (m, 4H)5 7.32 (m, 3H), 7.17 (m, 3H), 6.92 (dd, J = 9.8, 9.6 Hz, IH), 6.74 (io, IH), 4.50 (s, 2H), 3.88 (s, 3H), 3.33 (t, J = 7.3 Hz, 2H), 1.65 (m5 2H), 0.92 (t, J = 7.5 Hz, 3H).

Step b) Formation of2-fluoro-5-{[4-(phenylethynyl)benzyl](propyl)amir2θ}benzo ic acid

The title compound was prepared following the procedure described ih'Example 23 step c) using methyl 2-fluoro-5- {[4-(phenylethynyl)benzyl](propyl)amiαo}benz:oate (628 mg, 1.56 mmol). The title compound was obtained as a pale yellow powder (548 rug, 90%). HPLC, Rt: 4.7 min (purity: 98.6%). M"(ESI): 386.2. 1H NMR (CDCl3) S: 7.51-7.45 (m, 4H)3 7.33 (m, 3H), 7.26 (dd, J = 5.0, 3.3 Hz, IH), 7.18 (d, J = 8.1 Hz, 2H)3 6.95 (dd, J = 9.8, 9.7 Hz, IH), 6.79 (m, IH), 4.52 (s, 2H), 3.35 (t, J = 7.5 Hz, 2H), 1.66 (nt, 2H), 0.93 (t, J = . 7.5 Hz, 3H).

Step c) Formation of2-fluoro-5-{[4-(phenylethynyl)benz)>l](propyl)amiιt.o} ,benzoic acid, N- methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol) salt

The title compound was prepared following the procedure described in Example 24 using 2-fluoro-5-{[4-(phenylethynyl)benzyl](propyl)amino}benzoic acid (548 mg, 1.41 mmol). The title compound was obtained as a white powder (785 mg, 95%). HPLC, Rt: 4.7 min (purity: 99.2%). LC/MS, M-(ESl): 386.2.

Example 46: 2-fluoro-5-r{4-[^4-fluorophenyl')ethvnyl1benzylKhexyl')amino 1beDϋ2θic acid. N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol')salt

Step a) Formation of methyl 2-fluoro-5-(hexylamino)benzoate

To a solution of methyl 5-amino-2-fluorobenzoate (1.06 g; 6.27 mmol), hexanal (Aldrich, 753 μl; 6.27 mmol) and acetic acid (358.73 μl; 6.27 mmol) in DCE (35 roL) was added sodium triacetoxyborohydride (1.86 g; 8.78 mmol). The reaction mixture was then stirred at r.t. under nitrogen atmosphere for 3h. It was poured in a saturated solution of NaHCθ3 and extracted twice with DCM. The combined organic phases were then washed ^vvith brine, dried over MgSO4, filtrated and concentrated to give 1.654g of a brown solid. This solid was solubilized in ether and the chlorhydrate was precipitated by addition of Et2O/HCl. The solid thus obtained (1.06g) was treated with NaOH (IN), extracted with E-tOAc and purified again by flash chromatography using silica gel (c-Hex/EtOAc gradient 95:5 to 90:10) to give 630 mg (40%) of the title compound as a yellow solid. HPLC, Rtz 3.00 min (purity: 98.3%), LC/MS, M+(ESI): 255.1, M-(ESI) : 254.1, 1H NMR (CDCl3) δ: 7.06 (dd, J = 5.7, 3.1 Hz, IH), 6.92 (dd, J = 10.3, 8.9 Hz, IH), 6.69 (dt, J = 8.9, 3.5 Hz, IHC), 3.89 (s, 3H), 3.60 (brs, IH), 3.06 (t, J = 7.1 Hz, 2H), 1.57 (m, 2H), 1.30 (m, 6H), 0.88 (t, T = 6.7 Hz, 3H). Step b) Formation of methyl 2-fluoro-5-[{4-[(4~fluorophenyl)ethynyl]benzyl}- (hexyljamino] benzoate

To a solution of methyl 2-fluoro-5-(hexylamino)benzoate (270 mg; 1.07. mmol) and 4-[(4- fluoroρhenyl)ethynyl]benzaldehyde (358 mg; 1.60 mmol, intermediate which may be obtained according to methods disclosed in EP03103780.7) in anhydrous DCE (15 mL) was added sodium triacetoxyborohydride (678 mg; 3.20 mmol) at rt. The reaction mixture was then heated at 500C for 14h. It was then poured into a solution of saturated NaHCθ3

and extracted twice with DCM. The combined organic phases were then washed with brine, dried over MgSO4, filtrated and concentrated. The crude brown oil (652 mg) was purified by preparative HPLC using a X-Terra column to give 158 mg (32%) of the title compound, as a beige powder. HPLC, Rt: 6.01 min (purity: 96.5%), LC/MS, M+ (ESI): 462.2, 1HNMR. (CDCl3) δ: 7.46 (m, 2H), 7.41 (d, J = 8.3 Hz3 2H), 7.37 (m, IH), 7.13 (d, J = 7.9 Hz, 2H), 6.94-7.05 (m, 4H), 4.52 (s, 2H), 3.90 (s, 3H), 3.42 (t, J = 7.7 Hz, 2H), 1.56 (m, 2H), 1.26 (m, 6H), 0.85 (t, J = 6.6 Hz, 3H).

Step c) Formation of 2-fluoro-5-[{4-[(4-fluorophetτyl)ethynyl]benzyl}(hexyl)amin o]- benzoic acid The title compound was prepared following procedure described in Example 36, step c) from methyl 2-fluoro-5-[{4-[(4-fluorophenyl)ethynyl]ben2yl}(hexyl)amino] benzoate (300 mg; 0.65 mmol) and was isolated as a beige powder (152 mg, 52%). HPLC, Rt: 5.46 min

(purity: 99.0%), LC/MS, M+ (ESI): 448.1, M-(ESI) : 446.1, 1H NMR (CDCl3) : 8.6 (br s,

IH), 7.41-7.49 (m, 4H), 7.34 (m, IH), 7.16 (d, J = 8.3 Hz, 2H), 6.89 (m, 3H), 6.86 (m, IH), 4.52 (s, 2H), 3.40 (t, J = 7.6 Hz, 2H), 1.60 (m, 2H), 1.27 (m, 6H), 0.86 (t, J = 6.7 Hz, 3H).

Step d) Formation of 2-fluoro-5-[{4-[(4-fluorophenyl)ethynyl]benzyl}(hexyl)amino- Jbenzoic acid, N-methyl-D-glucamine (i.e. l~deoxy-l-(methylamino)glucitol)salt

The title compound was prepared following procedure described in Example 24 from 2- fluoro-5-[{4-[(4-fluorophenyl)ethynyl]benzyl}(hexyl)amino]be nzoic acid (126 mg; 0.28 mmol) and N-methyl-D-glucamine (55 mg; 0.28mmol) and isolated as a beige powder (126mg, quantitative). Rt: 5.83 min (purity: 97.7%), LC/MS: M+(ESI): 448.3, M'(ESI): 446.0, Rt: 5.45 min (purity: 99.4%). Analysis calculated for C28H27NO2F2- C7Hi7NO5-3 H2O: calculated C 60.33; H 7.23; N 4.02 %; Found: C 60.21; H 6.96; N 3.84 %.

Example 47: 2-fluoro-5-(hexyl{4-['(4-propylphenvπethvnyllbenzyUamino')b enzoic acid. N- methyl-D-glucamine (i.e. l-deoxy-l~fmethylamino')glucitol)salt

Step a) Formation of methyl 2-fluoro-5-(hexyl{4-[(4-propylphenyl)ethynyl]-benzyl}amino) benzoate The title compound was prepared following procedure described in Example 46, step b) from methyl 2-fluoro-5-(hexylamino)benzoate (250 mg; 0.99 rnmol) and 4-[(4-- propylphenyl)ethynyl]benzaldehyde (368 mg; 1.48 mmol, , intermediate which may be obtained according to methods disclosed in EP03103780.7). Purification of the crude (407 mg) by preparative HPLC using a X-Terra column yielded to 152 mg (32%) of the title compound as a beige powder. HPLC3 Rt: 6.53 min (purity: 98.6%), LCMS, M+ (ESI): 486.5, 1H NMR (CDCl3) δ 7.50 (m, IH), 7.42 (d, J = 1.9 Hz, 2H), 7.40 (d, J = 2,1 Hz, 2H),: 7.13 (d, J = 5.5 Hz, 2H), 7.11 (d, J = 5.7 Hz, 2H), 6.99 (m, 2H), 4.54 (s, 2H), 3.91 (s, 3H), 3.45 (m, 2H), 2.57 (t, J = 7.6 Hz, 2H), 1.55-1.68 (m, 4H), 1.25 (m, 6H), 0.91 (t, J = 7.4 Hz, 3H), 0.85 (t, J = 6.7 Hz, 3H).

Step b) Formation of2-flιιoro-5-(hexyl{4-[(4τpropylphenyl)ethynyl]benzy.l}a nlino)-berιzoiv acid

The title compound was prepared following procedure described in Example 36, step c) from methyl 2-fluoro-5-(hexyl{4-[(4-propylphenyl)ethynyl]benzyl}amino)be nzoate (152 mg; 0.31 mmol) and isolated as a pale yellow powder (120 mg, 97%). HPLC, Rt: :5.93 min (purity: 97.2%), LC/MS, M+ (ESI): 472.3,M"(ESI) : 470.2, 1H NMR (CDCl3) δ: 7.44 (d, J = 8.5 Hz, 2H), 7.41 (d, J = 8.1 Hz, 2H), 7.30 (m, IH), 7.14 (t, J = 8.1 Hz, 4H), 6.96 (t, J = 9.9 Hz, IH), 6.80 (m, IH), 4.51 (s, 2H), 3.39 (t, J = 7.6 Hz, 2H), 2.57 (t, J = 7.6 Hz, 2H), 1.64 (m, 4H), 1.29 (m, 6H), 0.91 (t, J = 7.3 Hz, 3H)3 0.87 (t, J = 6.4 Hz, 3H).

Step c) Formation of 2-βuoro-5-(hexyl{4-[(4-propylphenyl)ethynylJben∑yl}amino) benzoic acid , N-methyl-D-glucamine (Le. l-deoxy-l-(methylamino)glucitol)salt.

The title compound was prepared following procedure described in. Example 24 from 2- fluoro-5-(hexyl{4-[(4-propylphenyl)eth.ynyl]benzyl}amino)ben zoic acid (120 mg; 0.25 rrrmol) and N-methyl-D-glucamine (49.7 mg; 0.25 mmol) and isolated as a. white powder (148 mg, 87%). Rt: 5.83 min (purity: 97.7%), LC/MS: M"(ESI): 470.3. Analysis calculated for C31H34NO2F- C7H17NO5-LS H2O: calculated C 65.78; H 7.84; N 4.04 %; Found: C 65.78; H 7.62; N 3.99 %.

Example 48: 5-((4-r(4-butylphenyl)ethvnvnbenzyUf(2- carboxγcyclopropyl)memyl1ammo)-2-fluorobenzoic acid. N-methyl-D- glucamine (i.e. l-deoxy-l-fmemylamino)glucitol*)salt

Step a) Formation ofmethyl 5-({4-[(4-butylphenyl) ethynyl]benzyl}{[2-(ethoxycarbonyl) cyclopropyl]methyl}amino)-2-fluorobenzoate To solution of methyl 5-({4-[(4-butylρhenyl)ethynyl]benzyl}amino)-2-fluorobenzoat e (500 rag; 1.20 mmol) in anhydrous DCE (30 mL) were added ethyl-2-formyl-l- cyclopropanecarboxylate (Aldrich, 0.40 mL; 3.01 mmol) , triacetoxyborohydride (382 mg; 1.81 mmol).The resulting mixture was stirred at 500C under N2 atmosphere for 4 hours.

The mixture was poured into a saturated solution of NaHCOs (50 mL) and extracted with DCM (2x50 mL). The combined organic layers were washed with brine (100 mL), dried over magnesium sulfate, filtrated and the solvents were removed under reduced pressure to give 872 mg. Purification of this crude by flash chromatography on silicagel (c- Hex/EtOAc, gradient 95:5 to 90:10) gave 340 mg (65%) of the title compound as a yellow oil. HPLC, Rt: 6.06 min (purity = 96.2%). LC/MS, M+(ESI): 542.3. 1H NMR (CDCl3) δ: 7.43 (t, J = 8.5 Hz, 4H), 7.32 (m, IH), 7.22 (d, J = 7.9 Hz, 2H), 7.15 (d, J = 7.9 Hz, 2H), 6-93 (m, 2H), 4.54 (s, 2H), 4.08 (m, 2H), 3.89 (s, 3H), 3.35 (m, 2H), 2.61 (t, J = 7.5 Hz, 2H), 1.32-1.58 (m, 7H), 1.24 (t, J = 7.0 Hz, 3H), 0.92 (t, J = 7.3 Hz, 3H), 0.88 (m, IH).

Step b) Formation of: 5-{{4-[(4-butylphenyl)ethynyl]benzyl}[(2-carboxycyc!opropyl) methyl] amino}-2-fluorobenzoic acid To a solution of methyl 5-({4-[(4-butylphenyl)ethynyl]benzyl} {[2- (ethoxycaxbonyl)cyclopropyl] methyl} amino) -2-fluorobenzoate (340 mg; 0.63 mmol) in anhydrous THF (5 mL) were added lithium hydroxide monohydrate (64 mg; 1.54 mmol) and water (7 mL).The reaction mixture was stirred under MW at 1000C for 2500s. Then an

aqueous solution of HCl (IN) was added, the residue was extracted with EtOAc (2x100 mL). The combined organic layers were washed with brine (60 mL), dried over magnesium sulfate and the solvent was removed under reduced pressure to give 230 mg (73%) of the title compound as a white solid. HPLC, Rt: 4.99 min (purity = 99.5%). LC/MS: M'(ESI): 498.2, 1H NMR (MeOD) δ: 7.46 (d, J = 8.3 Hz5 2H), 7.41 (d, J = 8.3 Hz, 2H), 7.29 (m, 3H), 7.21 (d, J = 7.9 Hz, 2H), 4.66 (s, 2H), 3.44 (m, IH), 2.65 (t, J = 7.5 Hz, 2H), 1.65 (m, 3H), 1.35 (m, 3H), 1.15 (m, IH), 0.95 (m, 4H), 3.59 (m, IH), 7.05 (m, 2H).

Step c) Formation of5-{{4-[(4~butylphenyl)ethynyl]benzyl}[(2-carboxycyclopropy l)methyl] amino}-2-fluorobenzate, N-methyl-D-glucamine (i.e. l-deoxy~l-(methylamino)glucitol)salt

To a solution, of 5-{{4-[(4-butylphenyl)ethynyl]benzyl}[(2-carboxycyclopropyl) methyl] amino} -2-fluorobenzoic acid (215 mg; 0.43 mmol) in MeOH (10 mL), was added a solution of N-methyl-D-glucamine (84 mg; 0.43 mmol) in water (5 mL). Water (20 mL) was added and the resulting solution was lyophilized to give 240 mg (quantitative) of the title compound as a white powder. HPLC, Rt: 4.99 min (purity = 99.13%). LC/MS: M" (ESI): 498.3, Analysis calculated for C31H30NO4F- C7Hi7NO5- H2O: calculated C 64.03 ;H 6.93 ;N 3.93 %; Found: C 64.35 ;H 7.17 ;N 3.84 %. Example 49: 5-[{4-[f4-ethylphenyl)ethvnyl1benzyl}(hexyπamino]-2-fluorob enzoic acid. N- methyl-D-glucamine (i.e. l-deoxy-l-(memylamino)glucitol)sart

Step a) Formation ofmethyl 5-[{4-[(4-ethylphenyl)ethynyl]benzyl}(hexyl)amino]-2- fluorobenzoate

To a solution of4-[(4-ethylphenyl)e1hynyl]benzaldehyde (530 mg; 2.26. mrnol, intermediate which may be prepared according to methods disclosed in EPO31O3780.7) in toluene (35 mL) were added methyl 5-amino-2-fluorobenzoate (382 mg; 2.26 mmol) and AcOH (194 μL) and the reaction mixture was refluxed with azeotropic removal of water until complete consumption of., the aldehyde (determined by 1H NMR of aliquots). Toluene was concentrated under reduced pressure and the residue dissolved in DCE (25 mL). Hexanal (Aldrich, 818 μl; 6.79 mmol), acetic acid (194 μL) and sodium triacetoxyborohydride (l,4g, 6.79 mmol) were added to the solution, which was then heated at 60°C for 3 hrs. The

reaction mixture was poured into a saturated solution of NaHCθ3 and extracted twice with DCM. Combined organic layers were washed with brine, dried over magnesium sulfate, filtrated and concentrated to give 1.4 g of a brown solid. Purification by flash chromatography using silica gel (EtOAc/c-Hex, gradient from 97:3 to 95:5) yielded to 330 mg (30%) of the title compound as a white solid. HPLC, Rt: 6.27 min (purity: 61 %), LC/MS, M+(ESI): 472.2 , 1H NMR (CDCl3) δ: 7.43 (t, J = 7.7 Hz, 4H), 7.17 (m, 5H), 6.90 (t, J = 10.7 Hz, IH), 6.73 (m, IH), 4.49 (s, 2H), 3.88 (s, 3H), 3.35 (t, J = 7.8 Hz, 2H), 2.63 (qd, J = 7.5 Hz, 2H), 1.61 (m, 2H), 1.28 (m, 6H), 1.22 (t, J = 7.6 Hz, 3H), 0.85 (t, J = 5.1 Hz, 3H). Step b) Formation of5-[{4-[(4-ethylphenyl)ethynyl]benzyl}(hexyl)amino]-2-fluor obenzoic acid

The title compound was prepared following procedure described in Example 36, step c) from methyl 5-[{4-[(4-ethylphenyl)ethynyl]benzyl}(hexyl)amino]-2-fluorob enzoate (320 mg; 0.68 mmol) and isolated as a colorless oil (280 mg, 90%). HPLC, Rt: 5.67 min (purity: 98.1%), LC/MS, MT(ESI): 456.0, 1H NMR (CDCl3) δ: 7.47 (t, J = 8:7 Hz3 4H), 7.31 (m, IH)3 7.18 (m, 4H), 6.97 (t, J = 9.8 Hz, IH)3- 6.60 (m, IH), 4.52 (s, 2H), 3.39 (t, J =.-7.5 Hz, 2H), 2.66 (qd, J = 7.5 Hz, 2H), 1.65 (m, 2H)3 1.33 (m, 6H), 1.24 (t, J = 7.5 Hz, 3H)3 0.92 (t, J = 6.4 Hz, 3H).

Step c) Formation of 5-[{4-[(4-ethyZphenyl)ethynyl]benzyl}(hexyl)amino]-2-fluorob enzoic acid, N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)gluciiol)salt

The title compound was prepared following procedure described in Example 24 from 5- [{4-[(4-ethylphenyl)ethynyl]benzyl}(hexyl)amino]-2-fluoroben zoic acid (280 mg; 0.61 mmol) and was isolated as a white powder (173 mg, 43%). HPLC3 Rt: 5.55 min (purity: 98.8%), LC/MS, MT(ESI): 456.2, Analysis calculated for C3OH32NO2F- C7Hi7NO5- H2O: calculated C 66.25 ;H 7.66 ;N4.18 %; Found: C 66.31 ;H 7.70 ;N 4.18 %. Example 50: 5-[{4-[f4-tert-bυtylphenvDeth-ynyllbenzyl}(hexyl)amino1-2-f luorobenzoic acid. N-methyl-D-glucamine (i.e. l-deoxy-l-finethylarnino)glucitor)salt

Step a) Formation of methyl 5-[{4-[(4-tert~butylphenyl)ethynyl]benzyl}(hexyl)amino]-2- fluorobenzoate

The title compound was prepared following procedure described in Example 49, step a) from ethynyljbenzaldeliyde (500 mg; 1.91 mmoL intermediate which may be prepared according to methods disclosed in EP03103780.7) and methyl 5- amino-2-fluorobenzoate (322 mg; 1.91 mmol) and hexanal (Aldrich , 690 μl; 5.72 mmol). Purification of the crude (700 mg) by preparative HPLC using a X-Terra column afforded 440 mg (46%) of the title compound as a red oil. HPLC, Rt: 6.46 min (purity = 89.9%). LC/MS: M+(ESI): 500.3. 1H NMR (CDCl3) 5: 7.57 (d, J = 1.9 Hz, 2H), 7.54 (d, J = 2.3 Hz, 2H), 7.45 (d, J = 8.3 Hz, 2H), 7.35-7.20 (m, 3H), 7.04 (t, J = 9.6 Hz, IH)5 6.85 (m, IH), 4.61 (s, 2H), 4.00 (s, 3H), 3.47 (t, J = 7.72 Hz, 2H), 1.70 (m, 2H), 1.39 (s, 15H), 0.99 (t, J = 6.6 Hz, 3H). Step b) Formation of5-[{4-[(4-tert-butylphenyl)ethynyl]benzyl}βexyl)amino]-2- fluorobenzoic acid

The title compound was prepared following procedure described in Example 36, step c) from methyl 5-[{4-[(4-tert-butylphenyl)ethynyl]benzyl}(hexyl)amino]-2-fl uorobenzoate <440 mg; 0.88 mmol) and isolated as a white solid (430 mg, quantitative ). HPLC, Rt: 5.77 xxύa (purity = 98.7%). LC/MS: MXESI): 48.4.2, 1H NMR (CDCl3) δ: 7.3.8 (m, 5H), 7.29 (m, 3H), 7.12 (d, J = 8.6 Hz, 2H), 6.92 (t, J = 9.6 Hz, IH), 4.45 (s, 2H), 3.33. (t, J = 7:5 Hz, 2H), 1.55 (m, 2H), 1.25 (m, 15H), 0.80 (t, J = 6.9 Hz, 3H). Step c) Formation of5-[{4-[(4-tert-butylphenyl)ethynyl]benzyl}(hexyl)amino]-2- jfluorobenzoic

To a solution of 5-[{4-[(4-tert-butylphenyl)ethynyl]benzyl}(hexyl)amino]r2-fl uorobenzoic acid (328 mg; 0.68 mmol) in freshly distilled THF (10 mL),was added a solution of N- methyl-D-glucamine (133 mg; 0.68 mmol) in water .Water was added and the resulting solution was lyophilized to give 450 mg (97.9%) of the title compound as a white powder. HPLC, Rt: 5.89 min (purity = 98.3%). LC/MS: M'(ESI): 484.2, Analysis calculated for C32H36NO2F- C7Hi7NO5- H2O: calculated C 67.03; H 7.93; N 4.01 %; Found:. C 66.95; H 7.82; N 4.04.

Example 51 : 5-{[{4-[(4-butylρhenvDethvnyl]phenyl}(hexyDamino]metIiyl}-2 - fluorobenzoic acid, N-methyl-D-glticainine ("i.e. 1-deoxy-l- fmethylaminoMucitoPsalt

Step a) Formation of methyl 2fluoro-5-formylbenzoate

To a solution of 3-bromo-4-fluoro benzaldehyde (Aldrich, 10 g, 0.049 mol) in dry DMF (25. mL) was added dry methanol (40 mL) followed by TEA (9.9 g, 0.0988 mol), dppf (Aldrich, 1.36 g, 0.00246 mol) and palladium acetate (Aldrich, 0.31 g, 0.00138 rnol). The. reaction mixture was heated to 6O0C under carbon monoxide atmosphere for- 20h. The reaction mixture was cooled and purged with nitrogen to remove dissolved carbon monoxide if any. The solvent was removed under vacuum and the residue was purified by flash chromatography using silicagel (petrol ether/ ethyl acetate, 9:1) to afford 2 g (23%) of the title compound as a solid along with 6g of unreacted starting material. TLC: Petrol ether / EtOAc (7:3); R/= 0.7 ; HPLC : purity >98%. 1H NMR (DMSO) δ: 10.04 (s, IH), 8.45 (m, IH), 8.20 (m, IH), 7.59 (m, IH), 3.90 (s, 3H).

Step b) Formation of 4- [(4-butylphenyl)ethynyl] aniline To a stirred solution of4-iodoanάline (20 g, 91 mmol, Aldrich) and l-eth-l-ynyl-4- butylbenzene (16.7 g, 105 mmol, Aldrich) in dry acetonitrile (300 mL) under nitrogen was added CuI (0.83 g, 4.3 mmol), TTEA (27.7 g, 273 mmol) followed by Pd(PPhS)2Cl2 (3 g, 4.3 mmol). The reaction mixture was stirred at 850C for 24 hours and the solvent was removed under reduced pressure. The residue was diluted with Et2O (200 mL) and washed with water, brine and dried (MgSCv)- The solvent was removed under reduced pressure and trie crude product was purified by ctiromatography (Pet Ether / EtOAc (4/1) to give H g (47%) of the title compound as a solid. TLC-Pet ether / EtOAc (4/1): R/= 0.35. HPLC purify >98%.

Step c) Formation of methyl 5-{/4-[(4-butylphenyl)ethynyl](hexyl)anilino]methyl}-2- fluorobenzoate

The title- compound was prepared following procedure described in Example 49, step a) from 2-fluoro-5-formylbenzoic acid methyl ester (302 mg; 1.66 mmol), 4- (4- butylphenylethynyl)phenylamirie (413 mg; 1.66 mmol) and hexanal (Aldrich, 600 μl; 4.97 mmol). Purification of the crude (890 mg) by flash chromatograpy using silicagel (EtOAc/c-Hex 5:95 then 10:90) afforded 700 mg (85%) of the title compound as. a white powder. HPLC, Rt: 6.62 min (purity: 100%), LC/MS, M+(ESI): 500.3 , 1H NMR(CDCl3) δ: 7.75 (dd, J = 6.8,2.3 Hz, IH), 7.37 (d, J = 8.3 Hz, 2H), 7.32 (d, J = 8.9 Hz, 2H), 7.20 Cm, IH), 7.10 (d, J = 8.3 Hz1 2H), 7.05 (dd, J = 10.5,8.6 Hz, IH), 6.58 (d, J = 7.9 Hz, 2H), 4.52 (s, 2H), 3.90 (s, 3H), 3.38 (t, J = 7.8 Hz, 2H), 2.57 (t, J = 7.6 Hz, 2H), L57 (m, 4H), 1.30 (m, 8H), 0.87 (m, 6H). Step d) Formation of 5-{[4-[(4-butylphenyl)ethynyl](hexyl)anilino]methyl}-2- fluorobenzoic acid

The title compound was prepared following procedure described in Example 36, step c) from methyl 5-{[4-[(4-butylphenyl)ethynyl](hexyl)anilino]methyl}-2-fluor obenzoate (700 mg; 1.40 mmol) and isolated as an orange powder (566 mg, 83%). HPLC, Rt: 6.04 min, (purity: 99.9%). LC/MS, M+ (ESI): 486.2, M-(ESI): 484.1. 1H NMR (CDCl3) δ: 7.84 (d, J = 6.8 Hz, IH), 7.31 (d, J = 8.3 Hz, 2H), 7.32 (d, J = 8.7 Hz, 2H), 7.30 (m, IH), 7.06 (m, 3H), 6.58 (d, J = 7.9 Hz, 2H), 4.54 (s, 2H), 3.39 (t, J = 7.7 Hz, 2H), 2.57 (t, J = 7.7 Hz, 2H)3' 1.62 (m, 4H), 1.30 (m, 8H), 0.90 (m, 6H).

Step e) Formation of 5-{[4-[(4-butylphenyl)ethynyl](hexyl)anilino]methyl}-2- fluorobenzoic acid, N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol)salt

The title compound was prepared, following procedure described in Example 1, step g) from 5-{[4-[(4-butylphenyl)ethynyrl](hexyl)anilino]methyl}-2-fluo robenzoic acid (566 mg; 1.17 mmol) and N-methyl-D-glαcamine (227 mg; 1.17 mmol) and isolated as a white powder (676 mg, 88%). HPLC, Rt: 6.08 min (purity: 100%). LC/MS, M+(ESI): 486.2, M- (ESI): 484.2. Analysis calculated for C32H36NO2F-C7Hi7NO5-H2O: calculated C 67.03 ;H 7.93 ; N 4.01; Found: C 66.74 ;H 7.91 ; N 3.98% .

Cmethylammo)glucitol) salt

Step a) Formation of 2,2, 7-trimethyl-4H-l,3-henzodioxiτ*ι~4-one

To a stirred suspension of4-methylsalicylic acid (50 g, Aldrich) in TFA (320 mL) under nitrogen was added TFAA (105 mL) followed by dry acetone (60 mL). The reaction, mixture was heated to 650C for 5 hours. At this time -was added another portion of acetone • (50 mL) and heating was continued for 15 hours. Th.e solvent was removed .under reduced pressure and the residue was taken up with Et2O (2S0 mL). The organic layer was washed with a 10% aqueous solution OfNaHCO3 (2x100 mL), brine and dried over MgSO4. The solvent was removed under reduced pressure. The residue was purified by chromatograpliy (Pet Ether / EtOAc 98/2) to give 17 g (27%) of the titled compound as a liquid. TLC-Pet. Ether/ EtOAc (9/1): R/= 0.8. . •

Step b) Formation of 7-(dibromomethyl)-2,2-dirmethyl-4H-l,3-henzodioxin~4-one .

To a solution of 2,2}7-trimethyl-4H-l,3-benzodioxm-4-one (17.0 g, 88 mmol) ϋx CCl4 (20ι mL) under nitrogen was added NBS (34 g, 195 mmol) followed by benzoyl peroxide (1.7 g). The reaction mixture was refluxed for 12. hours and cooled atrt. The succitiimide was filtered off and the solvent was removed unxler reduced pressure. The residue was purifϊe by flash chromatography (Pet Ether / EtOAc 9/1) to give 1O g (32%) of the title compound as a solid. TLC-Pet Ether / EtOAc (9/1): R/= 0.7.

Step c) Formation of2,2-dimethyl-4-oxo-4H-l,3-benzodioxine-7-carbaldehyde

To a solution of 7-(dibromomethyl)-2,2-dimethyl-4H-l,3-benzodioxin-4-one (6.0 g, 17 mmol) in acetone (20 mL) and water (40 mL) under nitrogen was added AgNTO3 (6.0 g, 35 mmol). The reaction mixture was stirred at rt for 14 hours, then filtered throu^h a pad of Celite. The solvents were removed under reduced pressure. The residue was purified by chromatography (pet ether / EtOAc 9/1) to give 2.0 g (57%) of the titled conrpound as a solid. TLC-Pet Ether / EtOAc (7/3): R7= 0.7.

Step ά) Formation of4-[(4-hexylphenyl)ethynyl]aniline

To a stirred. solution of 4-iodoaniline (10.0 g, 45.6 mmol, Aldrich) and l-eth-l-ynyl-4- hexylbenzene (10.0 g, 53.0 mol, Maybridge) in anhydrous acetonitrile (2OO mL) under, nitrogen was added CuI (0.43 g, 2.2 mmol), TEA (14.0 g, 138 mmoF) followed by Pd(PPh3)2Cl2 (1.6 g, 2.2 mmol). The reaction mixture was stirred at 850C for- 22 hours. The solvent was removed under reduced pressure. The residue was diluted with Et2θ (200 mL) and washed with water and brine. The organic layer was dried (MgSO4) ajid the solvent was removed under reduced pressure. The crude product was purified by ctiromatography (pet ether/EtOAc 4/1) to give 11.0 g (87%) of the title compound as a pale yellow solid. TLC-Pet ether/EtOAc (4/1): R/= 0.4. ΗPLC purity >98%. Step e) Formation of7-({4-[(4-hexylphenyl)ethynyl]anilino}methyl)-2,2-dimethyl -4H-l,3- benzodioxin-4-one

A solution of 2,2-dimethyl-4-oxo-4H-l,3-benzodioxine-7-carbaldehyde (7OO mg; 3.38 mmol) and 4-[(4-hexylphenyl)ethynyl]amline (940 mg; 3.38 mmol) in toluene (40 mL) was refluxed for 48 hours with azeotropic removal of water. The solvent was ■ removed under reduced pressure and the residue was taken up in a mixture of MeOH C20 mL) and THF (20 mL). NaBH4 (130 mg, 3.38 mmol) was added and the resulting mixture was stirred at it for 8 hours. The solvents were removed under reduced pressure. The residue was taken up in EtOAc and washed with a saturated aqueous solution of NaUCO3 and brine. The organic layer was dried (Na2SO4) and the solvent was removed unxler reduced pressure to give a brown oil. Purification by flash chromatography on silica CEtOAc:c-Hex 1 :9 then 1:4) gave 466 mg (30%) of the title compound as a pale yellow oil. ELPLC, Rt: 6.1 min (purity: 95.6%). LCMS1 M+(ESr): 468.0, M-(ESI): 466.1.

Stepβ Formation of N-[(2,2-dimethyl-4-oxo-4H-l,3-benzodioxin-7-yl)methyζJ-N-{4 -[(^- hexylphenyl)ethynyl]phenyl}-3,3-dimethylbutanamide

A solution of 7-({4-[(4-hexylphenyl)ethynyl]anilino}methyl)-2,2-dimethyl-4 U-l,3- benzodioxin-4-one (227 mg; 0.49 mmol) was prepared in anhydrous THF (1.5.00 mL) and cooled at 00C. DIEA (0.20 mL; 0.58 mmol) and tert-butylacetyl chloride (0.L 5 mL; 0.53. mmol) were added. The reaction mixture was then stirred at rt overnight. The solvent was removed under reduced pressure and the residue was taken up in EtaO. The organic layer was washed with an aqueous solution of HCl (IN), a saturated aqueous solution of NaHCθ3 and brine. The organic layer was dried (MgSO4) and the solvent was removed under reduced pressure. Purification by flash chromatography on silica (EtOAc:c-Hex 1:4) gave 215 mg (78%) of the title compound as a pale yellow oil . HPLC, Rt: 6.5 min (purity: 100%). LC/MS, M+(ESI): 566.1.

Step g) Formation of4-({(3,3-dimethylbutanoyl)-4-[(4- hexylphenyl)ethynyl]anilino}methyl)-2-hydroxybenzoic acid

The title compound was prepared following procedure described in Examplel9, step c) from N-[(2,2-dimethyl-4-oxo-4H-l,3-benzodioxin-7-yl)methyl]-N-{4- [(4- - hexylρhenyl)ethynyl]phenyl}-3,3-dimethylbutanamide (215 mg; 0.38 mmol). The title compound was isolated as a beige solid (170 mg, 85%). HPLC, Rt: 6.3 min (purity: 98.9%). LC/MS, M+ (ESI): 526.4, MXESI): 524.3.

Step h) Formation of4-({(3,3-dimethylbutanoyl)-4-[(4- hexylphenyl)ethynyl]anilino}methyl)-2-hydroxybenzoic acid, N-methyl-D-glucamine (Le. 1- deoxy-1 - (methylamino)glucitol) salt

The title compound was prepared following procedure described in Example1, step g) from 4-({(3,3-dimethylbutanoyl)-4-[(4-hexylphenyl)ethynyl]anilino }methyl)-2-hydroxybenzoic acid (170 mg; 0.32 mmol) and N-methyl-D-glucamine (63 mg; 0.32 mmol). The title compound was isolated as a beige powder (199 mg, 85%). HPLC, Rt: 6.3 min (purity: 98.8%). LC/MS, M+ (ESI): 526.3, MT(ESI): 524.1.

Example 53: 5-f M-f^-butylphenvDethvnyllbenzvUdsobutyBaminoi-Σ-fluorobenzoi c acid. N-methyl-D-glucamine (i.e. l-deoxy-l-fmethylarninoMucitoDsalt

Step a) Formation of methyl 5-[{4~[(4-butylphenyl)ethynyl]benzyl}(isobutyl)amino]-2- uorobenzoate

To a solution of methyl 5({4-[(4-butylρhenyl)ethynyl]beπ2yl}amino)-2-fluorobenzoat e (300 mg; 0.72 mmol) in DCE (15 mL) were added isobutyraldehyde (Aldrich, 0.16 ml; 1.81 mmol) and triacetoxyborohydride (229 mg; 1.08 mmol). The reaction mixture was stirred at 60°C under N2 atmosphere for 4 hours. The mixture was poured into NaHCO3

(100 mL), then the product was extracted with DCM (2x 100 mL), washed with brine (100 mL), dried over magnesium sulfate and filtrated. The solvents were removed under reduced pressure. Purification of this crude by flash chromatography on silicagel (c-Hex/EtOAc, gradient 8:2 to 5:5 to 3:7) then by HPLC preparative with a X-Terra column gave 62 mg (19%) of the title compound as a brown oil. HPLC: 6.19 min (purity = 96.4%), LC/MS: M+(ESI): 472.4. 1H NMR (CDCl3) δ: 7.44 (d, J = 5.6 Hz3 2H), 7.41 (d, J = 5.3 Hz, 2H), 7.25 (m, IH), 7.14 (t, J = 7.5 Hz, 4H), 6.94 (t, J = 9.6 Hz, IH), 6.80 (m, IH), 4.57 (s, 2H), 3.90 (s, 3H), 3.45 (m, IH), 3.25 (d, J = 7.2 Hz, 2H), 2.61 (t, J = 7.7 Hz, 2H), 2.05 (m, IH), 1.60 (m, 2H), (s, J = 7.4 Hz, 2H), 0.95 (m, 9H).

Step bj Formation of the methyl5-[{4-[(4~butylphenyl)ethynyl]benzyl}(isobutyϊ)amino] -2- fluorobenzoique acid

To a solution of methyl 5-[{4-[(4-butylphenyl)ethynyl]benzyl}(isobutyl)amino]-2- fluorobenzoate (62 mg; 0.13 mmol) in THF (3 mL) were added . lithium hydroxide monohydrate (49 mg; 1.17 mmol) and water (2 mL). The reaction mixture was stirred at 1000C for 2500s under MW. The mixture was poured into HCl IN (10 mL) and extracted

witii EtOAc (2x25 mL). Combined organic layers were washed with' brine (50 mL), dried over magnesium sulfate and filtrated. The solvent was removed under reduced pressure to give 40 mg of the title compound as an orange solid. HPLC: Rt = 5.8 min (purity = 93.49%), LCMS: M"(ESI): 456.2, 1H NMR (MeOD) δ: 7.43 (t, J = 8.5 Hz, 4H), 7.35 (m, IH), 7.14 (d, J = 7.9 Hz, 4H), 6.96 (t, J = 9.9 Hz, IH), 7.85 (m, IH), 4.58 (s, 2H), 3.24 (d, J = 7.2 Hz, 2H), 2.61 (t, J= 7.7 Hz, 2H), 2.1 (m, IH), 1.59 (q, J = 7.6 Hz, 2H), 1.31 '(m, 2H), 0.95 (m, 10H).

Example 54: 5- { F {4-rf4-butylphenvDethvnvHbenzyl} (hexyDaminoicarbonyl} -2- fluorobenzoic acid. N-methyl-D-glucamine (i.e. 1-deoxy-l- fmethvlammo*)glucitoDsalt Step a) Formation of 4-fluoro-3-(methoxycarbonyl)benzoic acid

To a solution of methyl-2-fluoro-5-formylbenzoate (2 g, 0.0109 mol) in dry DMF (75 mL) was added oxone (Aldrich, 6.75 g, 0.0109 mol) and the reaction mixture was stirred for 3h at room temperature. The reaction mixture was then quenched with 1.5MΗC1 (50 mL) and the product was extracted with ethyl acetate (2x50mL). The combined .organic layers were washed with water, brine, dried over magnesium sulfate filtrated and concentrated to give 1.7 g (78%) of the titled compound as a solid. TLC : Chloroform / methanol (9/1), Rf= 0.2, HPLC purity >99%. 1H NMR (DMSO) 8: 8.44 (m, IH), 8.19 (m, IH), 7.48 (m IH), 3.88 (s, IH).

Step h) Formation ofmethyl 5-{[{4~[(4- butylphenyl)ethynyl]benzyl}(hexyl)amino]carbonyϊ}-2-fluorob enzoate

The title compound was prepared following procedure described in Example ;19, step c) from 4-fluoro-isophtalic acid - 3-methylester (199 mg; 1.01 mmol), EDCHCl (212 mg;

1.11 mmol) and N-{4-[(4-butylphenyl)ethynyl]benzyl}-l-hexanamine (350 mg, 1.01 mmol). Purification of the crude (503 mg) by flash chromatography using silicagel (EtOAc/c-Hex, 20: 80) afforded 394 mg (74%) of the title compound as a colorless oil. HPLC, Rt: 6.19 rain (purity: 99.8%), LC/MS, M+(ESI): 528.4. 1HNMR (CDCl3) δ: 7.99 (d, J = 5.1 Hz, IH), 7.98 (m, IH), 7.49 (d, J = 8.1 Hz, 2H), 7.42 (d, J = 8.1 Hz, 2H), 7.31 (m, IH), 7.15 (d, J = 8.1 Hz, 4H), 4.73 (s, IH), 4.48 (s, IH), 3.91 (s, 3H), 3.44 (s, IH), 3.11 (s, IH), 2.60 (t, J = 7.6 Hz, 2H), 1.35 (m, 4H), 1.08-1.37 (m, 8H), 0.90 (t, J = 7.3 Hz, 3H), 0.83 (m, 3H).

Step c) Formation of5-{[{4-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amino]carbony l}-2- fluorobenzoic acid

The title compound was prepared following procedure described in Example 36, step c) from methyl 5-{ [{4-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amino]carbonyl}-2- fluorobenzoate (394 mg; 0.75 mmol) and was isolated as a colorless oil (364 mg, 95%).- HPLC, Rt: 5.66 min (purity: 97.7%), LC/MS, MT(ESI): 512.2, M+ (ESI): 514.4, 1H NMR (CDCl3) δ: 8.06 (dd, J = 6.8,2.3 Hz, IH), 7.65 (m, IH), 7.50 (d, J = 7.9 Hz, 2H), 7.42 (d, J = 8.1 Hz, 2H), 7.34 (m, IH), 7.14 (d, J = 8.1 Hz, 4H), 4.75 (s, 5H), 4.52 (s,.5H), 3.48 (s, 5H), 3.13 (s, 5H), 2.59 (t, J = 7.8 Hz, 2H), 1.61 (m, 4H), 1.19-1.41 (m, 10H)5 0.91 (t, J = 7.3 Hz5 3H), 0.82 (m, 3H).

Step d) Formation of 5-{[{4-[(4-butylphenyl)ethynyl]benzyl}(hexyl)amino]carbonyl} -2- fluorobenzoic acid, N-methyl-D-glucamine (i.e. l-deoxy-I-(methylamino)glucitol)salt

The title compound was prepared following procedure described in Example 24 from 5 - { [{4-[(4-butylphenyl)ethynyl]benzyl} (hexyl)amino]carbonyl}-2-fluorobenzoic acid (360 mg; 0.70 mmol) and N-methyl-D-glucamine (136 mg; 0.70 mmol). It was isolated as a white powder (470 mg, 94.6%). HPLC, Rt: 5.63 min (purity: 100%). LC/MS, M+(ESI): 514.3, IVT(ESI): 512.3. Analysis calculated for C33H36NO3F-C7Hi7NO5-LoH2O calculated C 65.13; H 7.68 ;N 3.80%; Found: C 65.08 ; H 7.72 ; N 3.76.

Example 55: 5-rf4-[T4-butylphenyl')ethyriyllbenzoyl>('hexyl)amino]-2- fluorobenzoic acid. N-methyl-D-glucamine (i.e. l-deoxy-l-Cmethylamino^glucitoDsalt Step a) Formation of4-[(4~hutylphenyl)ethynyl]benzoyl chloride

To a solution of 4-(4-butylphenylethynyl)benzoic acid (300 mg; 1.08 mmol) in anhydrous toluene (10 mL) was added thionyl chloride (0.39 ml; 5.39 mmol). The reaction mixture was stirred overnight at 60°C under N2 atmosphere. The solvent and thionyl chloride were

removed under reduced pressure to give 296 mg of the title compound as a green solid. 1H NMR (CDCl3) δ: 8.09 (d, J = 8.7 Hz, 2H), 7.62 (d, J = 8.7 Hz, 2H), 7.47 (d, J = 8.3 Hz, 2H), 7.19 (d, J = 8.3 Hz, 2H), 2.64 (t, J = 8.7 Hz, 2H), 1.61 (q, J = 7.6 Hz, 2H), 1.37 (q, J = 7.8 Hz, 2H), 0.93 (t, J = 7.3 Hz, 3H). Step b) Formation ofmethyl 5-[{4-[(4-butylphenyl)ethynyl]benzoyl}(hexyl)amino]-2- flnorobenzoate

To a solution of methyl 2-fluoro-5-(hexylamino)benzoate (185 mg; 0.73 mmol) in THF (15 mL) were added 4-[(4-butylphenyl)ethynyl]benzoyl chloride (260 mg; 0.88 mmol), DIEA (0.15 mL; 0.88 mmol) and DMAP (20 mg). The mixture was stirred, at 6O0C under N2

atmosphere for 1 hour. It was then diluted with DCM (100 mL), washed with HCl 0.1N (50 HiL) and a saturated solution of NaHCOs (100 mL). The organic layer was dried over magnesium sulfate, filtrated and the solvent was removed under reduced pressure to give 4.80 mg of a, brown solid. Purification by flash chromatography on silicagel (c-Hex / EtOAc, 90:10) gave 170 mg (45.3%) of the title compound as a white solid. HPLC, Rt: 6.14 min (purity = 99.5%). LC/MS: M+(ESI): 514.3.

Step c) Formation of5-[{4-[(4-butylphenyl)ethynyl]benzoyl}(hexyl)amino]r2-fluo robenzoic acid

To a solution of methyl 5-[{4-[(4-butylphenyl)ethynyl]benzoyl}(hexyl)amino]-2- fluorobenzoate (170 mg; 0.33 mmol) in THF (7 mL) were added lithium hydroxide monohydrate (139 mg; 3.31 mmol) and water (3 mL).The reaction mixture was stirred under MW at 1000C for 2500s. . Then an aqueous solution of HCl (IN) was added and the

mixture extracted with EtOAc (2x50 mL). The combined organic layers were washed with brine, dried over magnesium sulfate and the solvent was removed under reduced pressure to give 147 mg (88.9%) of the title compound as a colorless solid. HPLC, Rt: 5.54 min (purity = 98.4%), LCMS: M-(ESI): 498.3. 1H NMR (MeOD) δ: 7.61 (m, IH), 7.29 (d, J = 7.9 Hz, 5H), 7.22 (d, J = 7.9 Hz, 2H), 7.08 (d, J = 7.9 Hz, 2H), 7.03 (s, IH), 3.8 (m, 2H), 2.52 (t, J = 7.5 Hz, 2H), 1.49 (q, J = 7.4 Hz, 4H), 1.25 (m, 8H), 0.82 (m, 6H).

Step d) Formation of5-[{4-[(4-butylphenyl)ethynyl]benzoyl}(hexyl)amino]-2-fluo robenzoic acid, N-methyl-D-glucamine (i.e. l-deoxy-l-(methylammo)glucitol)salt

To a solution of 5-[{4-[(4-butylphenyl)ethynyl]benzoyl}(hexyl)amino]-2-fluoro benzoic acid (147 mg; 0.29 mmol) in MeOH (5 mL) was added a solution of N-methyl-Dr glucamine (57 mg; 0.29 mmol) in water. The resulting solution was lyophilized to give 137 mg (93.2%) of the title compound as a white powder. HPLC, Rt:- 5.53 min (purity = 99.1%), LC/MS: M"(ESI): 498.2, Analysis calculated for C32H34NO3F- C7Hi7NO5-1.5 H2O: calculated C 64.89 ;H 7.54; N 3.88 %; Found: C 64.89; H 7.70; N 4.17 %.

Example 56: 5-[f{4-[C4-butylphenyl)ethvnγllρhenyl)sulfonyl)('hexyl)ami no]-2- fluorobenzoic acid. N-mettryl-D- glucamine fie. 1-deoxy-l- (methylamino)glucitol)salt

Step a) Formation of methyl 5-[[(4-bromophenyl)sulfonyl](hexyl)amino]-2-fluorobenzoate To a solution of methyl 2-fluoro-5-(hexylamino)benzoate (800 mg; 3.16 mmol) in anhydrous DCM (50 mL) were added 4-bromobenzenesulfonylchloride. (807 mg; 3.16 mmol) and TEA (0.53 mL). The reaction mixture was stirred overnight at 250C under N2

atmosphere. Then the mixture was poured into a saturated solution of NaHCO3 and . extracted with DCM (2x200mL). The combined organic layers were washed with a saturated solution ofNHUCl followed by brine, dried over magnesium sulfate, filtrated and the solvent was removed under reduced pressure to give a brown cream. Purification by flash chromatography using silicagel (c-Hex/ EtOAc, 95:5 then 90:10):gave 1.0 g (67.4%) of the title compound as a colorless cream. HPLC, Rt: 5.23 min (purity =,97,13%). LC/MS,- M+(ESI): 272.1. 1H NMR (CDCl3) δ: 7.63 (m, 2H), 7.52 (m, IH), 7.43 (d, J =9.2.Hz, 2H)5. 7.25 (m, 2H), 7.13 (t, J= 9.2 Hz, IH)3 3.91 (s, 3H), 3.49 (t, J = 6.97 Hz, 2H), 1.25 (m, 8H), 0.85 (t, J = 6.8 Hz, 3H).

Step b) Formation of methyl 5-[({4-[(4-butylphenyl)ethynyl]phenyl}sulfonyl)(hexyl)amino] - 2-fluorobenzoate To a solution of 5-[[(4-bromophenyl)sulfonyl](hexyl)amino]-2-fluorobenzoate (400 mg; 0.85 mmol) in DMF (15 mL) raider nitrogen were added (p-butylphenyl)acetylene (0.16 rrxL; 0.93 mmol), bis(triphenylphosphme)palladium chloride (29.7 mg; 0.04 mmol), triphenylphosphine (44.4 mg; 0.17 mmol), copper iodine (8.1 mg; 0.04 mmol) and TEA (O.35 mL; 2.54 mmol). The reaction mixture was stirred under MW at 1200C for 1500s.

The mixture was diluted with Et2θ (75 mL) and the precipitate obtained filtrated off. Filtrate was washed with HCl IN and with brine. The organic layer was dried over magnesium sulfate and the solvent was removed under reduced pressure. Purification by flash chromatography on silicagel 95:5 then 90:10) gave 207 mg.(44,5%) of th.e title compound as a yellow cream. HPLC, Rt: 6.17 min (purity = 98.5%). LC/MS: M+(ESI): 500.3, 1H NMR (CDCl3) δ: 7.55 (m, 6H), 7.32 (m, IH), 7.10 (m, 4H), 3.91 (s, 3DBi), 3.52 (t, J = 6.9 Hz, 2H), 2.63 (t, J = 7.9 Hz, 2H), 1.30 (m, 12H)3 0.95 (m, 3H), 0.85 (t, . 3H).

Step c) Fomation of5-[({4-[(4-butylphenyl)ethynyl]phenyl}sulfonyl)(hexyl)amin o]-2- βziorόbenzoic acid

To a solution of methyl 5-[({4-[(4-butylphenyl)ethynyl]phenyl}sulfonyl)(hexyl)amino] -2- ftuorobenzoate (207 mg; 0.38 mmol) in anhydrous THF (7 mL) were added lithium hydroxide monohydrate (158 mg; 3.77 mmol) and water (3 mL). The reaction mixture was stirred under MW at 1000C for 2500s. Then an aqueous solution of HCl (IN) was' added

and the mixture extracted with EtOAc (2x50 mL). The combined organic layers were washed with brine, dried over magnesium sulfate and the solvent was removed under reduced pressure to give 185 mg (91.7%) of the title compound as a brown cream. HPLC, Rt: 5.71 min (purity = 98.5%). LCMS, MXESI): 534.3. 1H NMR (MeOD) δ: 7.66 (d, J = 8.66 Hz, 2H), 7.58 (d, J = 8.66 Hz, 3H), 7.46 (d, J = 7.91 Hz, 2H), 7.31. (m, IH), 7.23 (m, 3H), 3.61 (m, 3H), 2.66 (t, J - 7.53 Hz, 2H)5 1.63 (qt, J = 7.34 Hz, 2H), 1.35 (rn, 12H), 0.96 (t, J = 7.91 Hz, 3H), 0.87 (t, J = 6.97 Hz, 3H).

Step d) Formation of5-[({4-[(4-butylphenyl)ethynyl]phenyl}sulfonyl)(hexyl)amin o]-2- fluorobenzoate, N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)gluctiol)salt

To a solution of 5-[({4-[(4-butylphenyl)ethynyl]phenyl}sulfdnyl)(hexyl)amino] -2- fluorobenzoic acid (180 mg; 0.34 mmol) in MeOH (7 mL), was added, a solution of N- methyl-D-glucarnine (66 mg; 0.34 mmol) in water (20 mL). The resulting solution was lyophilized to give 195 mg (79.4%) of the title compound as a white powder. HPLC, Rt: 5.72 min (purity = 98.50%). LCMS, MT(ESI): 536.2. Analysis calculated for C31H34NO4SF- C7Hi7NO5-LO H2O: calculated C 60.08; H 7.19; N 3.69.%; Found: C 59.93; H 7.11 ;N 3.82 %.

Example 57: 5-{r{4-[(4-butylphenyl)ethynyl]benzoyl}(hexyl)amino1methyl}- 2- fluorobenzoic acid. N-methyl-D-glucamine ("i.e. 1-deoxy-l- (methylamino)glucitoDsalt

Step a) Formation of methyl 2-fluoro-5~[(hexylamino) methyl] benzoate To solution of 2-fluoro-5-foπnylbenzoic acid methyl ester (1.0 g; 5.49 mmol) in anhydrous DCE (50 mL) were added hexylamine (Aldrich, 0.87 mL; 6.59 mmol), triacetoxyborohydride (l,74g; 8.24- mmol) and acetic acid (0.47 mL; 8.24 mmol). The resulting mixture was stirred at room temperature under N2 atmosphere for 5 hours. The mixture was poured into a saturated, solution of NaHCC>3 and extracted with DCM (2x200 mL). The combined organic layers were washed with brine, dried over magnesium sulfate, filtrated and the solvent was removed under reduced pressure. Purification by flash chromatography on silica gel (DC]VIZMeOHZNH4OH, 98:2:0.1) gave 920 mg(63%) of the title compound as a yellow cream. HPLC, Rt: 2.34 min (purity = 94.9%), LCZMS: M+(ESI): 268.1, 1H NMR (CDCl3) δ: 7.8 (dd, J = 2.2, 8.2 Hz, IH), 7.42 (m, IH), 7.00 (dd, J = 8.2, 2.2 Hz, IH), 3.91 (s, 3BQ, 3.76 (s, 2H), 2.58 (t, J = 7.1 Hz, 2H), 1.46 (qt, J = 6.7 Hz, 2H), 1.22 (m, 6H), 0.86 (t, J = 6.7 Hz, 3H).

Step b) Formation of methyl 5-{[{4-f(4-butylphenyl)ethynyl]benzoyl}(hexyljaminojmethyl}-

To a solution of 4-(4-butylphenylethynyl)benzoic acid (312 mg; 1.12 mmol) in DCM (15 mL) were added HOBT (181 mg; 1 .35 mmol), EDC-HCl (258 mg; 1.35 mmol) and DIEA (362 mg; 2.81 mmol). The mixture was stirred for 10 min at room temperature under N2 atmosphere before the addition of methyl 2-fluoro-5-[(hexylamino)methyl]benzoate (300 mg; 1.12 mmol). The reaction mixture was then stirred at 25 0C under N2 atmosphere

overnight. It was diluted in DCM (100 mL) and poured into NaOH (IN, 75 mL). The organic layer was washed with brine (100 mL), dried over magnesium sulfate, filtrated and the solvent was removed under reduced pressure. Purification by flash chromatography using silicagel (c-Hex/EtOAc, gradient from 9:1 to 1:1) gave 350 mg (59%) of the title compound as a white powder. HPLC, Rt: 6.19 min (purity = 99.7%). LCMS, M+(ESI): 528.3. 1H NMR (CDCl3) δ: 7.91 (m, IKQ, 7.55 (m, 3H), 7.41 (m, 4H), 7.15 (m, 3H)3 4.72 (m, IH), 4.50 (m, IH), 3.93 (s, 3H)5 3.42 (m, IH), 3.15 (m, IH), 2.61 (t, J = 5.5 Hz, 2H), 1.59 (qt, J = 7.7 Hz, 2H), 1.2 (m, 10H), O.92 (t, J = 7.3 Hz, 3H), 0.8 (m, 3H).

Step c) Formation of5-{[{4-[(4-butylph&nyl)ethynyl]benzoyl}(hexyl)amino]methyl }-2- fluorobenzoic acid

To a solution of methyl 5-{[{4-[(4-bυtylphenyl)ethynyl]benzoyl}(hexyl)amino]methyl} -2- fluorobenzoate (350 mg; 0.66 mmol) in THF (7 mL) were added lithium hydroxide monohydride (278 mg; 6.63 mmol) and water (3 mL).The reaction mixture was stirred under MW at 1000C for 2500 s. Then ajn aqueous solution of HCl IN (10 mL) was added

and the mixture extracted with EtOAc (2x50 mL). The combined organic layers were washed with brine (100 mL), dried over magnesium sulfate and the solvent was removed under reduced pressure to give 316 mg (93%) of the title compound' as a colorless oil. HPLC5 Rt: 5.64 min (purity = 98.7%). XC/MS: M+(ESI): 514, 1H NMR (MeOD) δ: 7.88 (m, IH), 7.50 (d, J = 7.9 Hz, 2H), 7.33 (d, J = 9.0 Hz, 5H), 7.1 (d, J = 7.9 Hz, 3H), 4.78 (m, IH), 4.60 (m, IH)5 2.54 (t, J = 7.5 Hz5 2H), 1.51 (q, J = 7.6 Hz5 5H)5 1.38 (s, 3H), 1.14 (t, J = 7.16 Hz, 4H), 1.02 (m, 3H).

Step d) Formation of 5-{[{4-[(4-butylphenyl) ethynyl]benzoyl}βexyl)amino]methyl}-2- fluorobetTzoic acid, N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol)salt

To a solution of 5-{[{4-[(4-butylphenyl)ethynyl]benzoyl}(hexyl)amino]methyl}- 2- fluorobenzoic acid (316 mg; 0.62 mmol) in MeOH (5 mL) was added a solution of N- methyl-D-glucamine (120 mg; 0.62 mmol) in water. The resulting solution was lyophilized to give 312 mg (71%) of the title compound as a white powder. HPLC, Rt: 6.19 min (purity = 99.7%, LC/MS: M"(ESI): 514.5. Analysis calculated for C33H36NO3F- C 7Hi7NO5-3.5 H2O: C 62.24; H 7.83 ;N 3.63 ; Exp.: C 62.51 ;H 7.54 ;NT 3.79.

Example 58: 5^{rr{4-r(4-but^lphenyl)ethynyl]phenyl}sαlfonyl)πiexyl)ami no]methyl}--2- • fluorobenzoic acid

Step a) Formation of methyl 5-{[[(4-bromophenyl)sulfonryl](hexyl)amino]methyl}-2- fluorobenzoate

To a solution of methyl 2-fiuoro-5-[(hexylamino)methyl]benzoate in DCM (13 mL) were added 4-bromobenzenesulfonyl chloride (200 mg; 0.79 mmol) and TEA (0.13 mL; 0.94 mmol). The reaction mixture was stirred at room temperature for 2 hours under N2 atmosphere. The mixture was poured into a saturated solution of NaHCO3 and extracted with DCM (2x100 mL). The combined organic layers were then washed with a saturated solution of NHUCl (150 mL) and with brine (150 mL), dried over magnesium sulfate, filtrated and the solvent was removed under reduced pressure. Purification by flash chromatography on silica gel (c-Hex/EtOAc, 95:5) gave 96 tng (25%) of the title compound as a colorless oil. HPLC, Rt: 5.13 min (purity = 99.1%). LXYMS: M+(ESI): 486.23; 1H NMR (CDCl3) δ: 7.78 (m, IH), 7.72 (m, 4H), 7.55 (m, IH)5.7_ 12 (m; IH), 4.31 (s, 2H), 3.93 (s, 3H), 3.09 (t, J = 7.5 Hz, 2H), 1.85 to 1.05 (m, 8H), 0.81 (t, J = 6.9 Hz, 3H).

Step b) Formation ofmethyl 5-{[({4-[(4-butylphenyl)ethynyl]phenyl}sulforzyl) (hexyl)amino] methylj-2-fluorobenzoate

To a solution of methyl 5-{[[(4-bromophenyl)sulfonyl](hexyl)amino]methyl}-2- fluorobenzoate (96 nig; 0.20 mmol) in DMF (5 mL) were added (Aldrich, p- butylpheriylacetylene (31 mg; 0.20 mmol), bis(triphenylphosphine) palladium (II) chloridte (6.9 mg; 0.01 mmol) , copper(T) iodide (1.9 mg; 0.01 mmol), triphenylphosphine (10.4 mg; 0.04 mmol) and TEA (0.08 mL ; 0.59 mmol). The mixture was stirred for 1500s at 1500C

under MW. The mixture was diluted with Et2θ (50 mL) and the precipitate obtained filtrated off. Filtrate was washed with HCl IN and with brine (75 mL). The organic layer was dried over magnesium sulfate and the solvent was removed under reduced pressure. Purification by flash chromatography using silicagel (c-Hex :EtOAc, 9:1 then 1:1) gave 66 mg (63.3%) of the title compound as a white solid. HPLC: Rt = 6.12 min (purity = 99.6 %). LC/MS: M+(ESI): 564.4. 1H NMR (CDCl3) δ: 7.79 (d, J = 8.3 Hz5 3H), 7.S4 (d, J = 8.7 Hz, 2H), 7.56 (m, IH), 7.46 (d, J = 8.3 Hz, 2H), 7.19 (d, J = 7.9 Hz, 2H), 7.15 (s, IH), 4.33 (s, 2H), 3.92 (s, 3H), 3.11 (t, J = 7.5 Hz, 2H), 2.63 (t, J = 7.7 Hz, 2H), 1.61 (t, J = 7.7 Hz, 2H), 1.35 (m, 5H), 1.15 (m, 5H), 0.93 (t, J = 7.3 Hz, 3H), 0.81 (t, J = 6.9 Hz, 3H). Step c) Formation of 5-{[({4-[(4- butylphenyl)ethynyl]phenyl}sulfonyl)(hexyl)amino]methyl}-2-f luorobenzoic acϊ^d

To a solution of methyl 5-{[({4-[(4-butylphenyl)ethynyl] phenyl}sulfonyl)(taexyl)amino] methyl}-2-fluorobenzoate (66 mg; 0.12 mmol) in THF ( 4 mL) were acϊded lithium hydroxide monohydrate (49 mg; 1.17 mmol) and water (1 mL). The reaction mixture was stirred at 1000C for 2500 s under MW. The mixture was poured into HCl IN <10 mL) and

extracted with EtOAc (2X75 mL). Combined organic layers were washed with brine (125 mL), dried over magnesium sulfate and filtrated. The solvent was removed under reduced pressure to give 57 mg (88.6%) of the title compound as a white powder. HPLC: Rt = 5.71 min (purity=98.9%), LC/MS: M"(ESI): 548.3.1H NMR (MeOD) δ: 7.87 (d, J = 8.6 Hz, 3H), 7.72 (d, J = 8.6 Hz, 2H), 7.69 (m, IH), 7.48 (d, J = 7.9 Hz, 2H), 7.22 (d, J = S.2 Hz, 2H), 7.18 (s, IH), 4.39 (s, 2H), 3.75 (m, IH), 3.55 (t, J = 4.3 Hz, IH), 3.16 (t, J = 7.3 Hz, 2H), 2.68 (t, J = 7.7 Hz, 2H), 1.63 (q, J = 7.5 Hz, 3H), 1.35 (m, 4H), 1.15 (m, 4H)3, 0.95 (t, J = 7.3 Hz, 3H), 0.82 (t, J = 7.0 Hz, 3H).

Example 59: 5- ( {4-[C4-butylphenyDethvnyr|benzyl}ffproρylamino)carbonyriar� �mo}-2- fluorobenzoic acid

Step a) Formation of methyl 5-{{4-[(4- butylphenyl)ethynyl]benzyl}[(propylamino)carbonyl]amino}-2-f luorobenzoate To a solution of methyl 5-({4-[(4-butylphenyl)eth.ynyl]benzyl}amino)-2-flτxorobenzo ate (150 mg; 0.36 mmol) in anhydrous DCM (12 mL) was added N-propylisocyanate (Aldrich, 0.39 mL; 4.16mmol). The mixture was stirred at 1000C for lh30 min under MW. The

reaction mixture was then treated with trisamine resin (Novabiochem HL, 941-.mg, loading = 3.2 mmol/g) and stirred at rt for 3h. The resin was filtered off and the filtrate, concentrated under reduced pressure. Purification by flash chromatography on silicagel (c-Hex-EtOAc, 90:10) gave 125 mg (69%) of the title compound as a white powder. HPLC: Rt = 5.88 min (purity = 99.3%), LC/MS: M+(ESI): 501.4.1H NMR (CDCl3) δ: 7.71 (q, J = 3.5 Hz, IH), 7.43 (d, J - 1.9 Hz, 4H), 7.15 (m, 5H), 7.06 (d, J = 9.0 Hz, IH), 4.84 (s, 2H), 3.92 (s, 3H)5 3.75 (t, J = 7.7 Hz, 2H), 2.61 (t, J = 7.7 Hz, 2H), 1.7 to 1.2 (m, 6H), 0.92 (t, J = 73 Hz, 3H), 0.83 (t, J = 7.3 Hz, 3H).

Step b) Formation hutylphenyl)ethynyl]benzyl}[(propylamino)carbonyl]amino}-2-f luorobenzoic acid The title compound was prepared following the procedure described in Example 58 step c) using methyl 5-{{4-[(4-butylphenyl)ethynyl]benzyl} [(propylamino)carbonyl]amino}-2- fluorobenzoate (115 mg; 0.23 mmol).The title compound was obtained as a white solid (110 mg, 98.4%). HPLC, Rt: 5.39 min (purity: 98.9%). LC/MS, MT(ESI): 585.3. 1H NMR (CDCl3) δ: 7.61 (m, IH), 7.43 (t, J = 7.2 Hz, 4H), 7.22 (m, 6H), 3.71 (m, IH), 3.25 (m, IH), 3.09 (t, J = 7.3 Hz, 2H), 2.63 (t, J = 7.5 Hz, 2H), 1.59 (q, J = 7.7 Hz, 2H), 1.38 (m, 4H), 0.95 (t, J = 7.3 Hz, 2H), 0.86 (t, J = 7.5 Hz, 2H).

Example 60: 5-{ {4-rf4-butylphenyl)ethynyl]benzyl} [fcvclohexylaminolcarbonyllamino}- 2-fluorobenzoic acid

Step a) Formation of methyl 5-{{4-[(4- butylphenyl)ethynyl]benzyl}[(cyclohexylamino)carbonyl]amino} -2-fluorobenzoate

To a solution of methyl 5-({4-[(4-bu1ylphenyl)e1iiynyl]benzyl}amino)-2-fiuorobenzoat e (142 mg; 0.34 mmol) in anhydrous DCM (15 mL) was added cyclohexylisocaynate (Aldrich, 0.51 mL, 3.93 mmol). The reaction mixture was stirred at 1000C for 2500s under

MW. The solvent was removed under reduced pressure and the crude was purified by flash chromatography on silica (c-Hex/EtOAc, gradient from 9:1 to 1:1) to give 65 mg (35%) of the title compound as a colorless oil. HPLC: Rt = 6.28 min (purity = 99.6%), LC/MS: M+CESI): 541.5.1H NMR (CDCl3) δ: 7.65 (dd, J = 3.78, 2.65 Hz, IH), 7.35 (d, J = 7.5 Hz3 4H), 7.08 (m, 6H), 4.77 (s, 2H), 3.85 (s, 3H), 3.61 (m, IH), 2.54 (t, J = 8.1 Hz, 2H), 1.81 (m, 2H), 1.55 (m, 6H), 1.25 (m, 4H), 0.91 (m, 2H), 0.85 (t, 3H).

Step b) Formation of 5-{{4-[(4- butylphenyl)ethynyl]benzyl}[(cyclohexylamino)carbonyl]aτnin o}-2-fluorobenzoic acid

The title compound was prepared following procedure described in Example 58, step c) from methyl 5- { {4-[(4-butylphenyl)ethynyl]benzyl}[(cyclohexylamino)carbonyl ]amino}-2- fluorobenzoate (65 mg; 0.12 mmol) and isolated as a white solid (51 mg, 81%). HPLC: Rt. = 5.74 min (purity = 98.5%), LCMS: MXESI): 525.5. 1H NMR (MeOD) δ: 7.62 (m, IH), 7.41 (t, J = 7.7 Hz, 4H), 7.21 (m, 6H)5 3.58 (m, 2H), 2.63 (t, J = 7.5 Hz, 2H), 1.85 (m, 2H), 1.65 (m, 5H), 1.35 (m, 5H), 1.15 (m, 2H), 0.95 ft J = 7.3 Hz, 3H).

Example 61 : 4-r{4-rr4-chlorophenvπethynyllbenzoyl}(3-cvclopentylpropyl) amino1-2- hvdroxybenzoic acid. N-methyl-D-glucamine fi.e. 1-deoxy-l- fmethylamino'lglucitoDsalt

Step a) Formation of4-[(4-chlorophenyl)ethynyl]-N-(3-cyclopentylpropyl)-N-(2,2 - dimethyl-4-oxo-4H~ I13-benzodioxin- 7-yl)benzamide The title compound was prepared following procedure described in example 26, step d) from 4-bromo-N-(3-cyclopentylpropyl)-N-(2,2-dimethyl-4-oxo-4H-l,3 -benzodioxin-7- yl)benzamide (437 mg, 0.90 mmol) and 4-chlorophenylacetylene (Apollo, 118 mg, 0.86 mmol). Purification by flash chromatography on silicagel (EtOAc/c-Hex 20:80) gave 373 mg (80%) of the title compound as a white foam. HPLC3 Rt: 6.03 min (purity: 93.6%). LC/MS, M+(ESI): 541.9. 1H NMR (CDCl3) δ: 7.78 (d, J = 8.3 Hz, IH), 7.24-7.45 (m, 8H), 6.74 (dd, J = 8.4,2.0 Hz, IH), 6.58 (d, J = 1.9 Hz, IH), 3.90 (t, J = 7.6 Hz, 2H), 1.46-1.86 (m, 9H), 1.40 (s, 6H), 1.36 (m, 2H), 1.03 (m, 2H).

Step b) Formation of4-[{4-[(4-chlorophenyl)et}iynyl]benzoyl}(3- cyclopentylpropyl)amino]-2-hydroxybenzoic acid

The title compound was prepared following the procedure described in example 19, step c) from 4-[(4-chlorophenyl)ethynyl]-N-(3-cyclopentylpropyl)-N-(2,2-d imethyl-4-oxo-4H-l,3- benzodioxin-7-yl)benzarnide (374 mg, 0.69 mmol). Purification of the crude by preparative HPLC using a X-Terra column afforded 237 mg (68.4%) of the title compound. HPLC, Rt: 5.71 min (purity: 94.4%). LC/MS, M:(ES1): 521.9. 1H NMR (CDCl3) δ : 10.51 (s, IH), 7.69 (d, J = 8.7 Hz, IH)3 7.27-7.70 (m, 8H), 6.71 (d, J = 1.9 Hz, IH), 6.48 (dd, J = 1.9,8.7 Hz, IH), 3.91 (t, J = 7.7 Hz, 2H), 1.63-1.71 (m, 9H), 1.34 (m, 2H), 1.03 (m, 2H). Step c) Formation of^lft-fft-chlorophenyljethynyljbenzoyljβ-cyclopentylpropyl jaminoj- 2-hydroxybenzoic acid , N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol) salt

To a solution of 4-((3-cyclopentylpropyl){4-[(4-chlorophenyl)ethynyl]benzoyl} amino)-2- hydroxybenzoic acid (230 mg, 0.46mmol) in MeOH (20 mL) was added a solution of N- rnethyl-D-glucamine (89 mg, 0.46mmol) in water (4 mL). Water (20 mL) was added and the resulting solution was lyophilized to give 230 mg of the title compound as a white powder. HPLC, Rt: 5.48 min (purity: 100%). LC/MS, M+(ESI):502.1, M"(ESI): 500.0. Analysis calculated for C3OH28NO4CLC7HI7NO51LS H2O: Calculated C 61.36 ; H 6.68 ; N 3.87 %. Found: C 61.21 ; H 6.68 ; N 3.85 %.

Example 62: Preparation of a pharmaceutical formulation

Formulation 1 - Tablets Carboxylic acid of formula (I) is admixed as a dry powder with a dry gelatin binder in an approximate 1 :2 weight ration. A minor amount of magnesium stearate is added as a lubricant. The mixture is formed into 240-270 mg tablets (80-90 mg of active piperazine-2- carboxamide compound per tablet) in a tablet press.

Formulation 2 — Capsules Carboxylic acid of formula (I) is admixed as a dry powder with a starch diluent in an approximate 1:1 weight ratio. The mixture is filled into 250 mg capsules (125 mg of active piperazine-2-carboxamide compound per capsule). Formulation 3 - Liquid Carboxylic acid of formula (T), sucrose and xanthan gum are blended, passed through a No. 10 mesh U.S. sieve, and then mixed with a previously prepared solution ofmicrocrystalline cellulose and sodium carboxymethyl cellulose (11:89) in water. Sodium benzoate, flavor, and color are diluted with water and added with stirring. Sufficient water is then added.

Formulation 4 - Tablets Carboxylic acid of formula (T), is admixed as a dry powder with a dry. gelatin binder in an approximate 1:2 weight ratio. A minor amount of magnesium stearate is added as a lubricant. The mixture is formed into 300-600 mg tablets (150-300 mg of active carboxylic acid derivative) in a tablet press.

Formulation 5 — Injection Carboxylie acid of formula (I), is dissolved in a buffered sterile saline injectable, aqueous medium to a concentration of approximately 5 mg/ml. Example 63 : Biological assays

The compounds of formula (I), may be subjected to the following assays :

(1) The PTP Enzyme Assay

(2) Tlie in vivo assay in db/db mice

(1) The PTP Enzyme Assay fin vitro assay)

Assays for the determination of the PTP inhibitory activity of test compounds are well known to a person skilled in the art. An example of such an assay is described below :

The PTP Enzyme Assay aims at determining the extent of inhibition of PTPs, e.g. of PTPlB, SHP-I, SHP-2, GLEPP-I or PTP-Hl in the presence of a test compound of formula (I). The inhibition is illustrated by IC50 values which denote the concentration of test compound necessary to achieve an inhibition of 50% of said PTP's using the following concentration of the PTP substrate DiFMUP : - 5 uM DiFMUP for PTPlB andPTP-Hl; - 20 μM DiFMUP for SHP-I and SHP-2; - 30 μM DiFMUP for GLEPP-I .

a) PTPs cloning

The cloning and expression of the catalytic domain e.g. of PTPlB, may be performed as described in J. Biol. Chem. 2000, 275(13), pp 9792-9796.

b) Materials and Methods

The DiFMUP assay allows to follow the dephosphorylation of DiFMUP (6,8-DiFluoro-4- MethylUmbelliferyl Phosphate) - which is the PTP substrate - mediated by PTP into its stable hydrolysis product, i.e. DiFMU (6,8-difiuoro-7-hydroxy coumarin). Due to its rather low pKa and its high quantum yield, DiFMU allows to measure both acidic and alkaline phosphatase activities with a great sensitivity.

Assays were performed in a 96 well plate format, using the catalytic core of a human recombinant PTP as the enzyme and 6,8-DiFluoro-4-MethylUmbelliferyl Phosphate (DiFMUP, Molecular Probes, D-6567) as a substrate. Compounds to be tested were dissolved in 100% DMSO at a concentration of 2 mM. Subsequent dilutions of the test compounds (to yield a concentration of 100, 30, 10, 3, 1,0.3, 0.1, 0.03, 0.01, 0.001 μM) were performed in 60 % DMSO manually. 8 μl of diluted compound or vehicle (60% DMSO = control) was distributed to a black Costar 96 well plate.42μl of human recombinant PTP enzyme diluted in assay buffer (2OmM Tris HCl pH 7.5, 0.01% IGEPAL CA-630, O.lmM ethylenediaminetetracetic acid, ImM DL-Dithiothreitol) can be added to the dilutions of compound orvehicule (distributed to a black Costar 96 well plate), followed by 50μl ofDiFMUP diluted in the assay buffer. The reaction ran for 30 minutes at room temperature before reading the fluorescence intensity (integral or intensity) on a Perkin-Elmer Victor 2 spectrofiuorimeter (excitation of 6,8-difluoro-7-hydroxy coumarin is at 355nm, the emission at 460 nm, for 0.1s). The percentage of inhibition is determined by measuring the relative fluorescence ion absence of a test compound (PTP inhibitor), i.e. with the solvent alone (5% DMSO). The IC50 values for inhibition were determined in triplicates.

The tested compounds according to formula (I) display an inhibition (illustrated by IC50 values) with regard to PTP of preferably less than 20 μM, more preferred less than 5 μM.

For instance, the compound of Example 8, i.e. {4-[({4-[(4-butylphenyl)ethynyl]benzyl}-

{[(E)-2-phenylvinyl]sulfonyl}amino)methyl]phenoxy}acetic acid displays an IC50 value of

0.51 μM in respect of PTPlB and an IC50 value of 0.62 μM in respect of GLEPP-I, an IC50

value of 0.82, 0.80 and 9.64 μM in respect of SHP-I, SHP-2 and PTP-Hl . The compound of Examples 30 & 35 display an IC5O value of 0.80 & 0.08 μM in respect of PTPlB and an

IC50 value of 0.86 & 0.21 μM in respect of GLEPP-I,

(2) In vivo assay in db/db mice

The following assay aims at determining the anti-diabetic effect of the test compounds of formula (I) in a model of postprandial glycemia in db/db mice, in vivo.

The assay was performed as follows :

A total of 18 db/db mice (about 8-9 weeks; obtained from IFFACREDO, l'Arbreste, France) were fasted during 20 hours.

2 groups, each consisting of 6 animals were formed :

• Group 1 : The animals were administered (per os) a dose of 10 mL/kg of vehicle (control).

• Group 2 : The animals were administered (per os) a dose of 30 mg/kg of the test compound according to formula (I) solubilized in the vehicle.

After oral administration of the compounds of formula (I) solubilized or suspended in ■ CarboxyMethylCellulose (0.5%), Tween 20 (0.25%) and water as vehicle, the animals had access to commercial food (D04, UAR, Villenαoisson/Orge, France) ad libitum. The diabetic state of the mice was verified by detemώiing the blood glucose level before. drug administration. Blood glucose and serum insulin levels were then determined 4 hrs after drug administration.

The determination of the blood glucose level was performed using a glucometer (Precision Q.I.D., Medisense, Abbot, ref. 212.62.31). The determination of the Insulin level was performed using an ELISA kit (Crystal CHEM, Ref. INSK R020).

Changes in blood glucose and serum insulin of drug treated mice were expressed as a percentage of control (group 1: vehicle treated mice).

Treatment (per os) of the animals with carboxylic acid compounds of formula (I), at a dosage of 30 mg/kg, decreased the blood glucose level induced by food intake by about 20- 40%.

For instance, upon using the compound of Example 16, i.e. 5-[(l-{4-[(4-butylphenyl)- ethynyl]phenyl}pentyl)oxy]-2-hydroxybenzoic acid, Example 19, i.e. 5-{[{4-[(4- butylphenyl)ethynyl]benzyl}(hexyl)amino]carbonyl}-2-hydroxyb enzoic, acid, N-methyl-D- glucamine (i.e. l-deoxy-l-(methylamino)glucitol) salt and Example 55, i.e. 5-[{4-[(4- butylphenyl)ethynyl]benzoyl}(hexyl)amino]-2-fluorobenzoic acid, N-methyl-D-glucamine (i.e. l-deoxy-l-(methylamino)glucitol) salt, the following decrease in blood glucose level as well as insulin level was determined (difference in insulin & glucose levels compared to Group 1 animals), respectively :

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