AU2011211410B2 - [1,2,4] triazolo [1,5-A] pyridines as kinase inhibitors - Google Patents

Abstract

The invention is directed to certain novel compounds, methods for producing them 5 and methods for treating or ameliorating a kinase-mediated disorder. More particularly, this invention is directed to substituted triazolopyridine compounds useful as selective kinase inhibitors, methods for producing such compounds and methods for treating or ameliorating a kinase-mediated disorder. In particular, the methods relate to treating or ameliorating a kinase-mediated disorder including cardiovascular diseases, diabetes, 0 diabetes-associated disorders, inflammatory diseases, immunological disorders, cancer and diseases of the eye such as retinopathies or macular degeneration or other vitreoretinal diseases, and the like.

Description

P/101OI Regulaton 3.2 AUSTRALIA Patents Act 1990 COMPLETE SPECIFICATION STANDARD PATENT Invention Title: [1,2,4] triazolo [1,5-A] pyridines as kinase inhibitors The following statement is a full description of this invention, including the best method of performing it known to us: 10206724_1.DOC iA HETEROCYCLIC COMPOUNDS 5 The invention is directed to certain novel compounds, methods for producing them 0 and methods for treating or ameliorating a disorder involving tyrosine kinase dysregulation such as disorder associated with increased vascular permeability or angiogenesis. More particularly, this invention is directed to substituted triazolopyridine compounds useful as selective kinase inhibitors, methods for producing such compounds and methods for treating or ameliorating a kinase-mediated disorder. In particular, the 5 methods relate to treating or ameliorating a disorder involving tyrosine kinase dysregulation including cardiovascular diseases, diabetes, diabetes-associated disorders, inflammatory diseases, immunological disorders, cancer and diseases of the eye such as retinopathies or macular degeneration or other vitreoretinal diseases, and the like. Passage of fluid and cells out of blood vessels is a significant contributing factor to 0 inflammation, tissue injury, oedema and death in a variety of circumstances. These include ischemic injury, toxic shock, burns, trauma, allergic and immune reactions. Vascular permeability is regulated in part by cell-cell adhesions between endothelial cells. The endothelial cell monolayer lining the vasculature forms a barrier that maintains the integrity of the blood fluid compartment, but permits passage of soluble factors and 5 leukocytes in a regulated manner. Dysregulation of this process results in vascular leakage into surrounding tissues, which accompanies the inflammation associated with pathological oedematous conditions. Vascular permeability is a finely-tuned function that can positively contribute to protective immune responses and wound healing; however, in a number of pathological situations, massive and/or chronic leakage of fluid as well as 30 migration of immune cells into tissues can have serious, and sometimes, life-threatening consequences. Abnormal retinal vascular permeability leading to oedema in the area of the macula is the leading cause of vision loss in diseases such as diabetic retinopathy, exudative macular degeneration, retinal vascular occlusions, and inflammatory and 35 neoplastic conditions. Although a variety of disease processes may lead to increased vascular permeability through different mechanisms, the cytokine VEGF is known to play a major role as inducer of vascular leakage. VEGF was first described as a potent vascular permeability factor (VPF) secreted by tumour cells that stimulated a rapid and reversible increase in microvascular permeability (Senger et al., 1983, Science., 25, 219, 40 983-5). Increased vascular permeability in ischemic retinopathies and possibly also in 10206724_I.DOC 2 exudative macular degeneration and uveitis, for example, correlated with VEGF levels (Fine et al., 2001, Am. J. Ophthalmol., 132, 794-796 ; Boyd et al., 2002, Arch Ophthalmol. , 120, 1644-1650) and VEGF antagonists have been successfully used to reduce retinal/macular oedema in neovascular eye diseases such as age-related macular 5 degeneration leading to stabilization or even improvement of visual acuity in a subset of affected patients. The way by which VEGF induces vascular permeability has recently been unravelled (Gavard and Gutkind, 2006, Nat Cell Biol., 8, 1223-1234) and it has been shown that VEGF-induced vascular leakage is mediated by cytoplasmic protein kinase members of the Src proto oncogene family. 0 Protein kinases play a central role in the regulation and maintenance of a wide variety of cellular processes and cellular functions. For example, kinase activity acts as a molecular switch regulating cell proliferation, activation, and/or differentiation. It is now widely accepted that many diseases result from abnormal cellular responses triggered by overactive protein kinase-mediated pathways. 5 Src kinases form a family of membrane-attached non receptor-dependent tyrosine kinases encompassing eight members in mammals: Src, Fyn, Yes, Fgr, Lyn, Hck, Lck, and Blk (Bolen et al., 1997, Annu. Rev. Immunol, 15, 371) which have important roles in receptor signalling and cellular communication (Thomas and Brugge, 1997, Annu Rev Cell Dev Biol., 13, 513-609). While most Src kinases are broadly expressed (i.e. Src, Fyn, 0 Yes), certain members of the family such as Hck, Blk or Lck exhibit a restricted expression. Src kinases play a pivotal role as membrane-attached molecular switches that link a variety of extracellular cues to intracellular signalling pathways. This is the basis for the involvement of Src kinases in cell proliferation and differentiation as well as cell adhesion and migration (Thomas SM and JS Brugge, 1997, supra). 25 It has been well-documented that Src protein levels and Src kinase activity are significantly elevated in human cancers including breast cancers, colon cancers, pancreatic cancers, certain B-cell leukemias and lymphomas, gastrointestinal cancer, non-small cell lung cancers, bladder cancer, prostate and ovarian cancers, melanoma and sarcoma (Summy and Gallick, 2003, Cancer Metastasis Rev, 22, 337-58). Thus, it has 30 been anticipated that blocking signalling through the inhibition of the kinase activity of Src will be an effective means of modulating aberrant pathways that drive oncologic transformation of cells (Abram et al., 2000, Exp. Cell Res., 254, 1; Russi et al, 2006, JPET, 318, 161-172; Jallal et al., 2007, Cancer Research, 67, 1580-1588). Similarly, it is well documented that Src-family kinases are also important for 35 signalling downstream of immune cell receptors. Fyn, like Lck, is involved in TCR signalling in T cells (Appleby et al., 1992, Cell, 70, 751). Hck and Fgr are involved in Fcy receptor signalling leading to neutrophil activation (Vicentini et al., 2002, J. Immunol., 10206724_LDOC 3 168, 6446). Lyn and Src also participate in Fcy receptor signaling leading to release of histamine and other allergic mediators (Turner and Kinet, 1999, Nature, 402, B24). These findings suggest that Src family kinase inhibitors may be useful in treating allergic diseases and asthma. 5 In accordance with the effect of VEGF on vascular permeability, several reports support a role of Src kinase in the development of oedema. For instance, Src but not Fyn deficiency or blockade of Src reduced brain oedema by about 55% following permanent cerebral ischemia in mice (Paul et al., 2001, Nat Med. , 7(2):222-7). Recently, PP1, a Src tyrosine kinase inhibitor was found to decrease oedema, to decrease breakdown of the 0 brain-blood barrier (BBB), to reduce expression of VEGF (Jadhav et al., 2007, J Neurosurg., 106, 680-686). Similarly, Scheppke et al. (2008, J Clin Invest., 118, 2337 2346) have shown that Src kinases are critical mediators of VEGF- and ischemia-induced retinal vascular leakage. Furthermore, Src tyrosine kinases fully mediate VEGF receptor signalling in 5 vascular endothelial cells. Thus, activation of Src kinases resulting from stimulation of VEGF receptor or other growth factor located on endothelial cells or progenitors triggers angiogenesis, a response which can be deleterious in retinal and corneal diseases and which markedly contributes to tumor development and metastasis migration. Several classes of compounds have been disclosed that modulate or, more 0 specifically, inhibit kinase activity as potential treatments of kinase-mediated disorders, particularly cancer. For example, W02001038315 describes aminoquinazolines as inhibitors of cyclin dependent kinases. W02008068507 describes pyridinylquinazolines as Raf serine/threonine kinase 25 inhibitors for treating cancer. W02008079988 describes quinazolines as PDK1 kinase inhibitors for treating proliferative diseases such as cancer. W02006118256 describes quinazoline derivatives as p38MAPK inhibitors for inhalation and for treating various inflammatory diseases and cancer. 30 W02006039718 describes aryl nitrogen-containing bicyclic compounds for use in treating protein kinase-mediated disease, including inflammation, cancer and related conditions. W02005037285 describes 2,6-disubstituted bicyclic heterocycles as Raf serine/threonine kinase inhibitors for treating disorders such as cancer.

10206724_I.DOC 4 W02004065378 describes 2-aminopyridines as cdk4 inhibitors for treating cell proliferative disorders such as cancer, atherosclerosis and restenosis. Interestingly, W02006024034 describes heterocyclic compounds derived from benzotriazine, triazines, triazoles and oxadiazoles, such as benzotriazine compounds 5 (W02005096784) or pyrimidine compounds (W02006101977) which are capable of inhibiting kinases, such as members of the Src kinase family. Nevertheless, these drugs while they are claimed as potentially useful as for treatment of various ophthalmological diseases (e.g. age-related macular degeneration, diabetic retinopathy, diabetic macular oedema, cancer, and glaucoma) are lipophilic and water insoluble (see W02006133411). 0 According to the inventors of W02006133411, these specific properties are particularly advantageous, particularly for ophthalmic uses, since these drugs being insoluble in water (water solubility of less than about 0.1 mg/mL at a pH range of 4-8) possess high efficiency of loading and negligible leakage due to high partitioning of the drug into the liposome used for delivering them compared to the water. 5 All the patents and publications mentioned above and throughout are incorporated in their entirety by reference herein. The eye is a tightly protected organ. In this respect, treating diseases of the back of-the-eye is probably the most difficult and challenging task of drug discovery as evidenced by the paucity of therapeutic options. One of the most convenient and safest 0 form of drug delivery to the eye is eye drops, since it is non invasive, does not require medical assistance and requires small volumes of drug solution. However, in order to be suitable for topical instillation, molecules have to be potent enough towards their molecular target, to present physico-chemical properties allowing crossing of cell membranes, and to be sufficiently soluble in aqueous medium to be applied as solution 25 onto the cornea. In addition, it is crucial that such drug molecules are as colourless as possible to prevent staining of ocular tissue which ultimately may interfer with vision. Furthermore, patients enrolled in clinical trials must not be aware of the nature of their treatment, which is obviously biaised when the preparation of the active ingredient is highly coloured. Additionally, due to the multiple cross reactivity between kinases, it is 30 highly desirable that said drug molecules inhibit the targeted kinases with a high degree of selectivity. Another feature of the present invention is to provide novel compounds which have increased water solubility compared to competitors. 35 Another feature of the present invention is to provide compounds that are highly potent, particularly towards src and lyn kinase inhibitors.

14848347_4.DOc 5 Another feature of the present invention is to provide compounds which are useful for treating a disorder, including an ophthalmic disorder, involving tyrosine kinase dysregulation such as disorder associated with increased vascular permeability or angiogenesis. Another feature of the present invention is to provide compounds which are colourless 5 or almost colourless, especially in solution. Additional features and advantages of the present invention will be set forth in part in the description that follows, and in part will be apparent from the description, or may be learned by practice of the present invention. The aspects and other advantages of the present invention will be realized and attained by means of the elements and combinations 0 particularly pointed out in the description and appended claims. According to one embodiment, the invention concerns compounds having the structure (1) as well as pharmaceutically acceptable salt, hydrate, solvate or prodrug thereof: A-N R NI X-R3 *N N R2 H (I) 5 wherein: A, and A 2 is N or C, with the proviso that one of A, or A 2 is N and one of Al or A2 is carbon; RI is phenyl substituted with R9 and RIO wherein R9/R1O is Cl or OH; R2 is hydrogen, CI-C4 alkyl, aryl, heteroaryl, -CN, -halogen, -CF 3 , or -OR4; 20 R3 is hydrogen, Cl -C4 alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, -CN, -CF 3 , -OR4, -OCOR4, -COR4, -NR4R5, -NR4COR5, -NR4COOR5, -(Cl-C4 alkyl)OR4, -(C1-C4 alkyl)COR4, -(CI-C4 alkyl) NR4R5, -(Cl-C4 alkyl)NR4COR5, -(Cl-C4 alkyl)NR4COOR5, X is a bond, or (CH 2 )aW(CH 2 )b, (CH 2 )aW(CH 2 )bY(CH 2 )c or-[(CH 2 )aW(CH 2 )b]m (Z)e-[( CH 2 )cY(CH 2 )d]n wherein: 1000080807_I.DOC 5a a, b, c and d are independently 0, 1, 2 or 3, e is 0, 1 or 2, and n and m are independently 0 or 1, and W is -CO-,-O-,-SO 2 -,- CH 2 -,-CHOH-, -NR6-, NR7CONR8 or NR7SO 2 NR8, 5 and Y is -CO-,-O-,-SO 2

-,-CH

2 -,-CHOH-or-NR6-, NR7CONR8 or NR7SO 2 NR8 and Z is selected from the group consisting of cycloalkyl, heterocycloalkyl, aryl and heteroaryl, and when e is 2, then each Z moiety is selected independently from 0 one another R4, R5 and R6 are independently hydrogen, Cl -C4 alkyl and where R4 and R5 together can form a 5-7 membered ring, R7 and R8 are independently hydrogen, C1-C4 alkyl and where R7 and R8 together can form a 5-7 membered ring, 5 wherein the compound is not N ~ c 0 or NI -0 Cx CI According to another embodiment, the invention concerns compounds having the structure (I) as well as a pharmaceutically acceptable salt, hydrate or solvate thereof : 1000080807_.DOC 5b R - - 1 N' X- R3 N N R2 A H (I) wherein: A, and A 2 is N or C, with the proviso that one of A, or A 2 is N and one of Al or A2 is carbon, 5 RI and R2 are hydrogen, C1-C4 alkyl, aryl, heteroaryl, -CN, -halogen, -CF 3 , -OR4, R3 is hydrogen, C1-C4 alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, -CN, -CF 3 , -OR4, OCOR4 -COR4, -NR4R5, -NR4COR5, -NR4COOR5, -(C1-C4 alkyl)OR4, -(C1-C4 alkyl)COR4, -(CI-C4 alkyl) NR4R5, -(C 1-C4 alkyl)NR4COR5, -(C 1-C4 alkyl)NR4COOR5, X is a bond, or (CH 2 )aW(CH 2 )b, (CH 2 )aW(CH 2 )bY(CH 2 )c or-[(CH 2 )aW(CH 2 )b]m-(Z)e-[( 0 CH 2 )cY(CH 2 )d]n wherein: a, b, c and d are independently 0, 1, 2 or 3, e is 0, 1 or 2, and 10206724_I.DOC 6 n and m are independently 0 or 1, and W is -CO-,-O-,-S0 2 -,- CH 2 -,-CHOH-, -NR6-, NR7CONR8 or NR7SO 2 NR8, and Y is -CO-,-O-,-SO 2

-,-CH

2 -,-CHOH-or-NR6-, NR7CONR8 or NR7SO 2 NR8 and 5 Z is selected from the group consisting of cycloalkyl, heterocycloalkyl, aryl and heteroaryl, and when e is 2, then each Z moiety is selected independently from one another R4, R5 and R6 are independently hydrogen, C1-C4 alkyl and where R4 and R5 together can form a 5-7 membered ring , 0 R7 and R8 are independently hydrogen, C1-C4 alkyl and where R7 and R8 together can form a 5-7 membered ring. According to a further embodiment, the invention provides compounds having the structure (I) as well as pharmaceutically acceptable salt, hydrate, solvate or prodrug thereof: 5 R N R N X-R3 1- 2,N No R2 H 0 (I) wherein 25

A

1 and A 2 is N or C, with the proviso that one of A 1 or A 2 is N and one of Al or A2 is carbon, R1 and R2 are hydrogen; Cl-C4 alkyl; aryl, which may be optionally substituted with R9 30 and/or RIO, whereby R9/R1O are independently selected from hydrogen, CI-C4 alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, -CN, halogen, -CF 3 , =0, -OR4, -NR4R5, NR4COR5, -NR4COOR5, -(C1-C4 alkyl)OR4, -(C1-C4 alkyl) NR4R5, -(C1-C4 alkyl)NR4COR5, -(Ci-C4 alkyl)NR4COOR5, -COOH, -COOR4; heteroaryl; -CN; -halogen;

-CF

3 ; -OR4; 35 R3 is hydrogen, CI-C4 alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, -CN, -CF 3 , OR4,-OCOR4 -COR4, -NR4R5, -NR4COR5, -NR4COOR5, -(C1-C4 alkyl)OR4, -(C1-C4 alkyl)COR4, -(C1-C4 alkyl) NR4R5, -(C1-C4 alkyl)NR4COR5, -(Ci-C4 alkyl)NR4COOR5, 10206724_1.DOC 7 X is a bond, or (CH 2 )aW(CH 2 )b, (CH 2 )aW(CH 2 )bY(CH 2 )c or-[(CH 2 )aW(CH 2 )b]m-(Z)e-[(

CH

2 )cY(CH 2 )d]n wherein : a, b, c and d are independently 0, 1, 2 or 3, e is 0, 1 or 2, and 5 n and m are independently 0 or 1, and W is -CO-,-O-,-SO 2 -,- CH 2 -,-CHOH-, -NR6-, NR7CONR8 or NR7SO 2 NR8, and Y is -CO-,-O-,-SO 2

-,-CH

2 -,-CHOH-or-NR6-, NR7CONR8 or NR7SO 2 NR8 and Z is selected from the group consisting of cycloalkyl, heterocycloalkyl, aryl 0 and heteroaryl, and when e is 2, then each Z moiety is selected independently from one another R4, R5 and R6 are independently hydrogen, C1-C4 alkyl and where R4 and R5 together can form a 5-7 membered ring , R7 and R8 are independently hydrogen, C1-C4 alkyl and where R7 and R8 5 together can form a 5-7 membered ring. As used herein throughout the entire application, the terms "a" and "an" are used in the sense that they mean "at least one", "at least a first", "one or more" or "a plurality" of the referenced compounds or steps, unless the context dictates otherwise. 0 More specifically, "at least one" and "one or more" means a number which is one or greater than one, with a special preference for one, two or three. The term "and/or" wherever used herein includes the meaning of "and", "or" and "all or any other combination of the elements connected by said term". The term "about" or "approximately" as used herein means within 20%, preferably 25 within 10%, and more preferably within 5% of a given value or range. As used herein, the term "comprising", "containing" when used to define products, compositions and methods, is intended to mean that the products, compositions and methods include the referenced compounds or steps, but not excluding others. As used herein, the term "halogen" as a group or part of a group is generic for 30 fluoro, chloro, bromo or iodo. The term "cycloalkyl" means a saturated monocyclic carbocycle containing from 3 to 7 carbon atoms, more preferably from to 5 carbon atoms. Examples of monocyclic cycloalkyl radicals include cyclopropyl, cyclobutyl, cyclopentyl and the like.

10206724_I.DOC 8 The term "heterocycloalkyl" means a saturated mono- or bicyclic heterocycle having from 3 to 14 ring members, preferably from 5 to 10 ring members and more preferably from 5 to 6 ring members, which contains one or more heteroatom ring members selected from nitrogen, oxygen and sulphur and which is optionally substituted 5 with R9 and/or R10 moities. Examples of heterocycloalkyl are pyrrolidine, piperidine, piperazine, morpholine and the like. The term "aryl" includes mono- and bicyclic aromatic carbocycles, optionally substituted with R9 and/or R10 moities. Examples of aryl include phenyl, 1-naphthyl, 2 naphthyl. 0 The term "heteroaryl" means an aromatic mono- or bicyclic heterocycle having from 5 to 10 ring members, preferably from 5 to 6 ring members, which contains one or more heteroatom ring members selected from nitrogen, oxygen and sulphur and which is optionally substituted with R9 and/or R10 moities. Examples of heteroaryl are pyridine, indole, benzofuran, oxazole, triazole, pyrimidine and the like. 5 R9/RIO are independently selected from hydrogen, C1-C4 alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, -CN, -halogen, -CF3, =0, -OR4, -NR4R5, -NR4COR5, NR4COORS, -(C1-C4 alkyl)0R4, -(C1-C4 alkyl) NR4R5, -(C1-C4 alkyl)NR4COR5, -(C1-C4 alkyl)NR4COOR5, -COOH, COOR4 with R4 and R5 as defined above. The compounds of the invention may contain one or more chiral centres, because 0 of the presence of asymmetric carbon atoms, and they may therefore exist as a number of diastereoisomers with R or S stereochemistry at each chiral centre. The invention includes all such diastereoisomers and mixtures thereof. Prodrug forms of the compounds of Formula I are also part of the present invention. A prodrug may be a pharmacologically inactive derivative of a biologically 25 active substance (the "parent drug" or "parent molecule") that requires transformation within the body in order to release the active drug, and that has improved delivery properties over the parent drug molecule. The transformation in vivo may be, for example, as the result of some metabolic process, such as chemical or enzymatic hydrolysis of a carboxylic, phosphoric or sulphate ester, or reduction or oxidation of a 30 susceptible functionality. The term "compound" herein is in general referring to compounds of formula I, or pharmaceutically acceptable salt, hydrate, solvate, crystal form, individual diastereomers and prodrugs thereof. For use in accordance with the invention, the following structural characteristics 35 are currently preferred, in any compatible combination, in the compounds (I): R1 is preferably an aryl, more preferably a phenyl.

10206724_I.DOC 9 R1 is preferably substituted with R9 and R10 wherein R9/R1O is C1-C4 alkyl (preferably CH 3 ), halogen (preferably -Cl), or -OH. R1 is preferably a phenyl and is substituted with R9 and R10 in positions 2, 5 or 6. R2 is preferably hydrogen or 5 R2 is preferably C1-C4 alkyl (preferably CH 3 ). X is preferably (CH 2 )aW(CH 2 )b with a is 0, b is 2, W is -0-. Alternatively X is preferably (CH 2 )aW(CH 2 )bY(CH 2 )c with a is 0, b is 1 and c is 0, W is -0- and Y is -CO-. Alternatively X is preferably -[( CH 2 )aW(CH 2 )b]m-Z-[( CH 2 )cY(CH 2 )d]n with m is 0 0, n is 1, c is 0, d is 0 or 2, Y is -CO- or is absent and Z is imidazoline-2-one or a piperazine. R3 is preferably a heterocycloalkyl, preferably a pyrrolidine. R3 is preferably substituted with R9 wherein R9 is preferably -COOH , -N[CH 3

]

2 or -COOR4 wherein R4 is preferably C1-C4 alkyl. 5 Alternatively R3 is preferably an heteroaryl, preferably a pyridine. Compounds of the invention include those of the Examples herein, in particular the following, and their salt, hydrate, solvate 4-Chloro-3-{2-[4-(2-pyrrolidin-1-yl-ethoxy)-phenylamino]-[1,2,4]triazolo[1,5 a]pyridin-6-yl}-phenol, hydrochloride 0 2-{4-[6-(2-Chloro-5-hydroxy-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamino] phenoxy}-1-((R)-3-dimethylamino-pyrrolidin-1-yl)-ethanone, hydrochloride 1-{4-[6-(2-Chloro-5-hydroxy-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamino] phenyl}-3-(2-pyrrolidin-1-yl-ethyl)-imidazolidin-2-one (S)-1-(2-{4-[6-(2-Chloro-5-hydroxy-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2 25 ylamino]-phenoxy}-acetyl)-pyrrolidine-2-carboxylic acid 4-Chloro-3-{8-methyl-2-[4-(2-pyrrolidin-1-yl-ethoxy)-phenylamino] [1,2,4]triazolo[1,5-a]pyridin-6-yl}-phenol, hydrochloride 4-Chloro-3-{2-[4-(2-pyrrolidin-1-yl-ethoxy)-phenylamino]-[1,2,4]triazolo[1,5 a]pyridin-7-yl}-phenol, hydrochloride 30 4-Chloro-3-{2-[4-(2-morpholin-4-yl-ethoxy)-phenylamino]-[1,2,4]triazolo[1,5 a] pyridin-6-yl}-phenol 4-Chloro-3-{2-[3-(2-morpholin-4-yl-ethoxy)-phenylamino]-[1,2,4]triazolo[1,5 a]pyridin-6-yl}-phenol 10206724_IDOC 10 4-Ch loro-3- [2- (3-pyrazol- I1-yI- phenylani no)-[ 1, 2,4]triazolo[ 1, 5-a] pyrid in-6-yl] phenol 4-Chloro-3-{ 2- [4- (2-dimethyla mi no-ethoxy)- phenylani no] -[ 1,2,4]triazolo[ 1,5 a] pyridi n-6-yI}-phenol 5 4-Chloro-3-{2- [3- (2-dimethyla mino-ethoxy) -phenylami no] -[1, 2,4triazolo[ 1,5 a] pyridi n-6-yII- phenol 4-Chloro-3-{2- [3-(2-pyrrolid in- 1-yI-ethoxy)- phenylani no] -[1, 2,4]triazolo[ 1, 5 a] pyridin-6-ylI-phenol 4-Chloro-3- [2-(4- hyd roxymethyl- phenylamino)- [ 1,2,4]triazolo[ 1, 5-a] pyrid in-6 0 yI]-phenol 4-Chloro-3- [2-(3-hydroxymethyl- phenylamnino)-[I 1,2,4]triazolo[ 1, 5-a] pyridi n-6 yI]-phenol 4-[6-(2-Chloro-5-hydroxy-phenyl)- [1,2,4]triazolo[ 1,5-a]pyridin-2-ylamino] benzenesu Ifonam idle 5 4-Chloro-3-{2-[4-(2-hydroxy-ethoxy)-phenylamino]-[1,2,4]triazolo[1,5-a]pyridin 6-yI}-phenol 1-{4- [6-(2-Chloro-5-hydroxy-phenyl)- [1,2,4]triazolo[ 1,5-a] pyridin-2-ylamino] phenyl}-imidazolidin-2-one 3- [6-(2-Chloro-5-hydroxy-phenyl)- [1,2,4]triazolo[l1,5-a]pyridin-2-ylamino] 0 benzenesulfonamide 2-{4-[6-(2-Chloro-5-hydroxy-phenyl)-[ 1,2,4]triazolo[ 1,5-a]pyridin-2-ylamino] phenoxy}-acetamide 2-{3- [6-(2-Chloro-5-hydroxy-phenyl)-[ 1,2,4]triazolo[ 1,5-a] pyridin-2-ylamino] phenoxy}-acetamnide 5 4-Chloro-3-[2-(4-trifluoromethoxy-phenylamino)-[1,2,4]triazolo[1,5-a]pyridin-6 yI]-phenol 4-Chloro-3-[2-(4-phenoxy-phenylamino)-[ 1,2,4]triazolo[ 1,5-a] pyridin-6-yl] phenol 4-Chloro-3- [2-(4-methanesulfonyl-phenylamino)-[ 1,2,4]triazolo[ 1,5-a] pyridin-6 30 yI]-phenol 3-[2-(4-Benzyloxy-phenylamino)-[ 1,2,4]triazolo[ 1,5-a] pyridin-6-yI]-4-chloro phenol 1-{4- [6-(2-Chloro-5-hydroxy-phenyl)- II1,2,4]triazolo[ 1,5-a] pyridin-2-ylamino] phenyl}-3-(2-pyrrolidin- 1-yI-ethyl)-imidazolidin-2-one 35 5-[6-(2-Chioro-5-hydroxy-phenyl)-[1,2,4]triazolo[ 1,5-a] pyridin-2-ylamino] benzofuran-2-carboxylic acid 1-{4-[6-(2-Chloro-5-hydroxy-phenyl)-[ 1,2,4]triazolo[ 1,5-a] pyridin-2-ylamino] phenyl}-3-methyl-imidazolidin-2-one 10206724_l.DOC 11 1-{4-[6-(2-Chloro-5-hydroxy-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamino] phenyl}-3-(2-methoxy-ethyl)-imidazolidin-2-one 1-[(4-{[6-(2-chloro-5-hydroxyphenyl)-[1,2,4]triazolo[1,5-a]pyridin-2 yl]amino}benzene)sulfonyl]-3-ethylurea 5 1-(4-{4-[6-(2-Chloro-5-hydroxy-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2 ylamino]-phenyl}-piperazin-1-yl)-2-methoxy-ethanone (4-{4- [6-(2-Chloro-5-hydroxy-phenyl)- [ 1,2,4]triazolo[ 1,5-a]pyridin-2-ylamino] phenyl}-piperazin-1-yl)-pyridin-4-yl-methanone 1-{4- [6-(2-Chloro-5-hydroxy-phenyl)-[ 1,2,4]triazolo[1,5-a]pyridin-2-ylamino] 0 phenyl}-3-(2-pyrrolidin-1-yl-ethyl)-urea 4-Chloro-3-{2- [4-(2-piperazin- 1-yl-ethoxy)-phenylamino]- [ 1,2,4]triazolo[ 1,5 a]pyridin-6-yl}-phenol According to one embodiment, the compound of the Invention is a salt of 5 compound of formula I. According to one preferred embodiment, the compounds of the Invention have a water solubility over 0,1 mg/ml at a pH range of 4-8, preferably pH range of 5-7, such as over about 0,5 mg/ml at a pH range of 5-7, for example over about 1 mg/ml at a pH range of 5-7. 0 According to one embodiment, the compounds of the Invention have a limited colour, preferably they are uncoloured or pale yellow. Preferred compounds of the present invention act primarily on src and/or lyn kinase. According to one embodiment, the compounds of the Invention are src and/or lyn 25 kinase inhibitors. According to one embodiment, the compounds of the Invention have an IC50 towards Src of less than about 15 nM, advantageously less than about 10 nM, more preferably less than about 1 nM, advantageously less than about 0,9 nM, more preferably less than about 0,5 nM. 30 According to one embodiment, the compounds of the Invention have an IC50 towards Lyn of less than about 15 nM, advantageously less than about 11 nM, more preferably less than about 4 nM, advantageously less than about 3 nM, more preferably less than about 1 nM. According to one embodiment, there are provided compositions including one or 35 more compound of the Invention and a pharmaceutically acceptable carrier or aqueous medium.

10206724_I.DOC 12 As used herein, the term "pharmaceutically acceptable" refers to carriers that do not produce an adverse, allergic or other unwanted reaction when administered to an animal, or human, as appropriate. As used herein, "pharmaceutically acceptable carrier" includes any and all solvents, dispersion media, coatings, antibacterial and antifungal 5 agents, isotonic and absorption delaying agents and the like. The use of such carriers for pharmaceutical active substances is well known in the art. Examples of suitable pharmaceutical carriers are described in "Remington's Pharmaceutical Sciences" by E. W. Martin. In a preferred embodiment, the compounds of the Invention are formulated in accordance with routine procedures as a pharmaceutical composition adapted for 0 administration to the eye. Supplementary active ingredients, such as anti-inflammatory agent, chemotherapeutic agent, anti-cancer agent, immunomodulatory agent, gene based therapeutic vaccine, immunotherapy product, therapeutic antibody and/or protein kinase inhibitors can also be incorporated into the compositions. According to one embodiment, the compounds of the present invention will be 5 formulated for parenteral administration, e.g., formulated for injection via the intravenous, intramuscular, subcutaneous, or even intraperitoneal routes. The preparation of an aqueous composition that contains a compound or compounds of the Invention will be within the skill of those in the art, in light of the present disclosure. Typically, such compositions can be prepared as injectables, either as liquid solutions or 0 suspensions; solid forms suitable for using to prepare solutions or suspensions upon the addition of a liquid prior to injection can also be prepared; and the preparations can also be emulsified. According to another embodiment, the compounds of the present invention will be formulated for topical administration of the compounds of the Invention, especially for 25 the treatment of ophthalmic disorders. The preparation of a composition that contains a compound or compounds of the Invention will be within the skill of those in the art, in light of the present disclosure. Typically, such compositions for topical administration can be prepared as ointment, gel or eye drops. The topical ophthalmic composition may further be an in situ gel formulation. Such a formulation comprises a gelling agent in a 30 concentration effective to promote gelling upon contact with the eye or with lacrimal fluid in the exterior of the eye. Suitable gelling agents include, but are not limited to, thermosetting polymers such as tetra-substituted ethylene diamine block copolymers of ethylene oxide and propylene oxide (e.g., poloxamine); polycarbophil; and polysaccharides such as gellan, carrageenan (e.g., kappa-carrageenan and iota 35 carrageenan), chitosan and alginate gums. The phrase "in situ gellable" as used herein embraces not only liquids of low viscosity that form gels upon contact with the eye or with lacrimal fluid in the exterior of the eye, but also more viscous liquids such as semi- 10206724_I.DOC 13 fluid and thixotropic gels that exhibit substantially increased viscosity or gel stiffness upon administration to the eye. According to another embodiment, the compounds of the present invention will be formulated for oral administration of the compounds of the Invention. The preparation 5 of a composition that contains a compound or compounds of the Invention will be within the skill of those in the art, in light of the present disclosure. Typically, such compositions for oral administration can be prepared as liquid solutions or suspensions, tablets, time release capsules and other solids for oral administration. According to another embodiment, the compounds of the present invention will be 0 formulated for intratumoral administration of the compounds of the Invention. The preparation of a composition that contains a compound or compounds of the Invention will be within the skill of those in the art, in light of the present disclosure. Typically, such compositions for intratumoral administration can be prepared as disclosed above for the other routes of administration. 5 According to another embodiment, the compounds of the present invention will be formulated for inhaled administration of the compounds of the Invention. The preparation of a composition that contains a compound or compounds of the Invention will be within the skill of those in the art, in light of the present disclosure. Typically, such compositions for inhalation can be prepared as disclosed above for the other routes of administration. 0 According to another embodiment, the compounds of the present invention will be combined with ophthalmologically acceptable preservatives, viscosity enhancers, penetration enhancers, buffers, sodium chloride, and water to form an aqueous, sterile ophthalmic suspension or solution. Ophthalmic solution formulations may be prepared by dissolving a compound in a physiologically acceptable isotonic aqueous buffer. Further, 25 the ophthalmic solution may include an ophthalmologically acceptable surfactant to assist in dissolving the compound. Furthermore, the ophthalmic solution may contain an agent to increase viscosity, such as hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, methylcellulose, polyvinylpyrrolidone, or the like, to improve the retention of the formulation in the conjunctival sac. Gelling agents can also 30 be used, including, but not limited to, gellan and xanthan gum. In order to prepare sterile ophthalmic ointment formulations, the active ingredient is combined with a preservative in an appropriate vehicle, such as, mineral oil, liquid lanolin, or white petrolatum. The compounds are preferably formulated as topical ophthalmic suspensions or solutions, with a pH of about 5 to 8, and more preferably from about 6.5 to about 7.5. 35 The compounds will normally be contained in these formulations in an amount 0.001% to 5% by weight, but preferably in an amount of 0.025% to 2% by weight. Thus, for topical 10206724_I.DOC 14 presentation 1 to 2 drops of these formulations would be delivered to the surface of the eye 1 to 4 times per day according to the discretion of a skilled clinician. In another embodiment, there are provided methods of treating a disorder involving tyrosine kinase dysregulation such as disorder associated with increased 5 vascular permeability or angiogenesis, including the administration of a therapeutically effective amount of one or more compound of the Invention to a subject in need of such treatment. As used herein, the term "treatment" or "treating" encompasses prophylaxis and/or therapy. Accordingly the compositions and methods of the present invention are 0 not limited to therapeutic applications and can be used in prophylaxis ones. Therefore "treating" or "treatment" of a state, disorder or. condition includes: (i) preventing or delaying the appearance of clinical symptoms of the state, disorder or condition developing in a subject that may be afflicted with or predisposed to the state, disorder or condition but does not yet experience or display clinical or subclinical symptoms of the 5 state, disorder or condition, (ii) inhibiting the state, disorder or condition, i.e., arresting or reducing the development of the disease or at least one clinical or subclinical symptom thereof, or (iii) relieving the disease, i.e. causing regression of the state, disorder or condition or at least one of its clinical or subclinical symptoms. As used herein, the terms "patient" "subject in need thereof" are meant any 0 animal; preferably, the animal is a vertebrate; more particularly a member of the mammalian species and includes, but is not limited to, domestic animals (e.g. cows, hogs, sheep, horses, dogs, and cats), primates including humans. The terms "patient" "subject in need thereof" are in no way limited to a special disease status, it encompasses both patients who have already developed a disease of interest and 25 patients who are not sick. As used herein, the terms "therapeutically effective amount" are meant any amount of compound or composition that will elicit the biological response of a tissue, animal, or human, cell, organ... According to one embodiment, the said disorder involving tyrosine kinase 30 dysregulation is a disorder associated with increased vascular permeability. According to another embodiment, the said disorder involving tyrosine kinase dysregulation is a disorder associated with angiogenesis. In preferred embodiment, the disorder involving tyrosine kinase dysregulation is a disorder associated with a src and/or lyn kinase dysregulation. 35 According to one embodiment, the said disorder involving tyrosine kinase dysregulation is selected in the group consisting of myocardial infarction, stroke, 10206724_I.DOC 15 congestive heart failure, an ischemia or reperfusion injury, trauma, cancer, oedema, arthritis or other arthropathy, retinopathy or vitreoretinal disease, diabetic retinopathy, macular oedema, including diabetic macular oedema, macular degeneration, glaucoma, autoimmune disease, vascular leakage syndrome, inflammatory disease, oedema, 5 transplant rejection, burn, or acute or adult respiratory distress syndrome (ARDS). In another embodiment, there are provided methods of treating an ophthalmic disorder associated with increased vascular permeability , including the administration of a therapeutically effective amount of one or more compound of the Invention to a subject in need of such treatment. 0 In another embodiment, there are provided methods of treating a subject having or at risk of having cancer including administering to the subject a. therapeutically effective amount of one or more compound of the Invention thereby treating the subject. In another embodiment, there are provided methods of treating a subject having or at risk of having oedema and/or angiogenesis including administering to the subject a 5 therapeutically effective amount of one or more compound of the Invention, thereby treating the subject. In another embodiment, there are provided methods of treating a subject having or at risk of having macular degeneration including administering to the subject a therapeutically effective amount of one or more compound of the Invention, thereby 0 treating the subject. In another embodiment, there are provided methods of treating a subject having or at risk of having diabetic retinopathy including administering to the subject a therapeutically effective amount of one or more compound of the Invention, thereby treating the subject. 25 In another embodiment, there are provided methods of treating a subject having or at risk of having macular oedema, including diabetic macular oedema, including administering to the subject a therapeutically effective amount of one or more compound of the Invention, thereby treating the subject. In another embodiment, there are provided methods of treating a subject having 30 or at risk of having glaucoma including administering to the subject a therapeutically effective amount of one or more compound of the Invention, thereby treating the subject. In another embodiment, there are provided methods of treating a subject having or at risk of having retinopathy including administering to the subject a therapeutically 35 effective amount of one or more compound of the Invention, thereby treating the subject.

10206724_I.DOC 16 In another embodiment, there are provided methods of treating a subject having or at risk of having vitreoretinal disease including administering to the subject a therapeutically effective amount of one or more compound of the Invention, thereby treating the subject. 5 In another embodiment, there are provided methods of treating a subject having or at risk of having inflammatory disease, including administering to the subject a therapeutically effective amount of one or more compound of the Invention, thereby treating the subject. In yet another embodiment, there are provided methods of treating a disorder, 0 including an ophthalmic disorder and cancer, associated with compromised vascular permeability including the administration of a therapeutically effective. amount of one or more compound of the Invention in combination with an anti-inflammatory agent, chemotherapeutic agent, antitumoral agent, immunomodulatory agent, gene-based therapeutic vaccine, immunotherapy product, therapeutic antibody and/or a kinase 5 inhibitor, to a subject in need of such treatment. Administration of the compounds of the Invention, especially for ophthalmic applications, is preferably by topical administration. However, the invention is not limited to topical delivery in that it also includes for example intraocular and periocular injection, systemic delivery (e.g. oral or other parenteral route such as for example subcutaneous, 0 intramuscular, intravenous administrations) or intratumoral delivery. In yet another embodiment, there are provided methods of delivering a compound of the Invention to the back of the eye, the method including preparing a composition including a pharmaceutically effective amount of at least one compound of the Invention and delivering said composition to the eye of a subject in need of such delivery. 25 In yet another embodiment, there are provided methods of delivering a compound of the Invention intratumoraly, the method including preparing a composition including a pharmaceutically effective amount of at least one compound of the Invention and delivering said composition to the tumor of a subject in need of such delivery. To prepare a composition of the Invention, and more specifically an ophthalmic 30 composition or antitumoral composition, a therapeutically effective amount of one or more compound of the Invention is placed in a vehicle as is known in the art. For example, topical ophthalmic formulations containing steroids are disclosed in US 5,041,434, whilst sustained release ophthalmic formulations of an ophthalmic drug and a high molecular weight polymer to form a highly viscous gel have been described in US 35 4,271,143 and US 4,407,792. Further GB 2007091 describes an ophthalmic composition in the form of a gel comprising an aqueous solution of a carboxyvinyl polymer, a water- 10206724_.DOC 17 soluble basic substance and an ophthalmic drug. Alternatively, US 4,615,697, discloses a controlled release composition and method of use based on a bioadhesive and a treating agent, such as an anti- inflammatory agent. The amount of the compounds of the Invention to be administered and its 5 concentration in the compositions used in the method of the Invention depend upon the selected dissolving agent, delivery system or device, clinical condition of the patient, side effects and stability of the compound within the composition. Thus, the physician employs the appropriate preparation containing the appropriate concentration of the compounds of the Invention and selects the amount of formulation administered, 0 depending upon clinical experience with a given patient or with similar types of patients. In another. embodiment, there are provided processes for making one or more compound of the Invention or its pharmaceutically acceptable salt, hydrate, solvate, crystal form salt and individual diastereomers thereof. There are multiple synthetic routes for the preparation of the compounds of the 5 invention, but all rely on chemistry known to the synthetic organic chemist. Thus, compounds represented by Formula I can be synthesized according to procedures described in the literature and are well-known to one skilled in the art. Typical literature sources are "Advanced organic chemistry", 4th Edition (Wiley), J March, "Comprehensive Organic Transformation", 2nd Edition (Wiley), R. C. Larock, "Handbook of Heterocyclic 0 Chemistry", 2nd Edition (Pergamon), A. R. Katritzky), review articles such as found in "Synthesis", "Acc. Chem. Res.", "Chem. Rev", or primary literature sources identified by standard literature searches online or from secondary sources such as "Chemical Abstracts" or "Beilstein". Compounds of the invention can be synthesized by methods analogous to those exemplified in the Examples herein for certain representative 25 compounds. Using the procedures described in the Examples section, and well known procedures, one skilled in the art can prepare the compounds disclosed herein. In another embodiment, there are provided kit including packaging material and a composition contained within the packaging material, wherein the packaging material includes a label which indicates that the composition can be used for treatment of 30 disorders associated with compromised vascular permeability and wherein the composition includes one or more compound of the Invention. In another embodiment, there are provided kit including packaging material and a composition contained within the packaging material, wherein the packaging material includes a label which indicates that the composition can be used for treatment of 35 disorders associated with compromised vascular permeability and selected from myocardial infarction, stroke, congestive heart failure, an ischemia or reperfusion injury, cancer, arthritis or other arthropathy, retinopathy or vitreoretinal disease, macular 10206724_I.DOC 18 degeneration, autoimmune disease, vascular leakage syndrome, inflammatory disease, edema, transplant rejection, burn, or acute or adult respiratory distress syndrome (ARDS) and wherein the composition includes one or more compound of the Invention. In one preferred embodiment, there are provided kit including packaging material 5 and a composition contained within the packaging material, wherein the packaging material includes a label which indicates that the composition can be used for treatment of ophthalmic disorders associated with compromised vascular permeability and wherein the composition includes one or more compound of the Invention or its pharmaceutically acceptable salt, hydrate, solvate, crystal form salt and individual diastereomers thereof . 0 Those skilled in the art will appreciate that the invention described herein is susceptible to variations and modifications other than those specifically described. The invention includes all such variation and modifications. The invention also includes all of the steps, features, formulations and compounds referred to or indicated in the specification, individually or collectively and any and all combinations or any two or more 5 of the steps or features. Each document, reference, patent application or patent cited in this text is expressly incorporated herein in their entirety by reference, which means that it should be read and considered by the reader as part of this text. That the document, reference, patent application or patent cited in this text is not repeated in this text is merely for 0 reasons of conciseness. The present invention is not to be limited in scope by the specific embodiments described herein, which are intended for the purpose of exemplification only. Functionally equivalent products, formulations and methods are clearly within the scope of the invention as described herein. 25 The invention described herein may include one or more range of values (eg size, concentration etc). A range of values will be understood to include all values within the range, including the values defining the range, and values adjacent to the range which lead to the same or substantially the same outcome as the values immediately adjacent to that value which defines the boundary to the range. 30 Reference to any prior art in the specification is not, and should not be taken as, an acknowledgment, or any form of suggestion, that this prior art forms part of the common general knowledge in Australia or any other jurisdiction or that this prior art could reasonably be expected to be ascertained, understood and regarded as relevant by a person skilled in the art. 35 The following examples are given to illustrate the preparation of compounds that are the subject of this invention but should not be construed as implying any limitations 10206724_I.DOC 19 to the claims. The proton magnetic resonance spectrum of each compound of the Examples was consistent with the assigned structure. EXAMPLES 1 - SYNTHESIS OF COMPOUNDS OF GENERAL FORMULA (I) 5 1.1 . General method Step A - Coupling of 7-Bromo-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine or 6-Bromo-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine to 1 eq of optionally substituted B1,B2-phenyl boronic acid in a polar solvent at -100 to 300 0 C, most preferably 50-150*C B BrR NH B(OH)2 B,BN ~A-N B2

AB

2 - N 0 R2 *N NH 2 Step B - Coupling of 3 or 4-substituted bromo-phenyl to 1 eq of optionally substituted B1,1B2-7 or 6-phenyl--[1,2,4]triazolo[1,5-a]pyridin-2 ylamine in a polar solvent at -100 0 C to 300 0 C, most preferably 50-150*C 5 BC HA-N Br 8 H- a' B N B B ABN A2- BP -- CA2 R2 N NH2 R2 *N H Cpn The compounds of the formula I and also the starting materials for their 20 preparation, are prepared by methods as described in the examples or by methods known per se, as described in the literature (for example in standard works, such as Houben-Weyl, Methoden der Organischen Chemie [Methods of Organic Chemistry], Georg Thieme Verlag, Stuttgart; Organic Reactions, John Wiley & Sons, Inc., New York), to be precise under reaction conditions which are known and suitable for the said 25 reactions. Use can also be made here of variants which are known per se, but are not mentioned here in greater detail. The starting materials for the claimed process may, if desired, also be formed in situ by not isolating them from the reaction mixture, but instead immediately converting 10206724_I.DOC 20 them further into the compounds of the formula I. On the other hand, it is possible to carry out the reaction stepwise. Preferably, the reaction of the compounds is carried out in the presence of a suitable solvent, which is preferably inert under the respective reaction conditions. 5 Examples of suitable solvents are hydrocarbons, such as hexane, petroleum ether, benzene, toluene or xylene; chlorinated hydrocarbons, such as trichlorethylene, 1,2 dichloroethane, tetrachloromethane, chloroform or dichloromethane; alcohols, such as methanol, ethanol, isopropanol, n-propanol, n-butanol or tert-butanol; ethers, such as diethyl ether, diisopropyl ether, tetrahydrofuran (THF) or dioxane; glycol ethers, such as 0 ethylene glycol monomethyl or monoethyl ether or ethylene glycol dimethyl ether (diglyme); ketones, such as acetone or butanone; amides, such as acetamide, dimethylacetamide, dimethylformamide (DMF) or N-methyl pyrrolidinone (NMP); nitriles, such as acetonitrile; sulfoxides, such as dimethyl sulfoxide (DMSO); nitro compounds, such as nitromethane or nitrobenzene; esters, such as ethyl acetate, or mixtures of the 5 said solvents or mixtures with water. Polar solvents are in general preferred. Examples for suitable polar solvents are chlorinated hydrocarbons, alcohols, glycol ethers, nitriles, amides and sulfoxides or mixtures thereof. More preferred are amides, especially dimethylformamide (DMF). As stated above, the reaction temperature is between about -100*C and 300*C, 0 depending on the reaction step and the conditions used. Reaction times are generally in the range between some minutes and several days, depending on the reactivity of the respective compounds and the respective reaction conditions. Suitable reaction times are readily determinable by methods known in the art, for example reaction monitoring. Based on the reaction temperatures given 25 above, suitable reaction times generally lie in the range between 10 min and 48 hrs. Every reaction step described herein can optionally be followed by one or more working up procedures and/or isolating procedures. Suitable such procedures are known in the art, for example from standard works, such as Houben-Weyl, Methoden der organischen Chemie [Methods of Organic Chemistry], Georg-Thieme-Verlag, Stuttgart). 30 Examples for such procedures include, but are not limited to evaporating a solvent, distilling, crystallization, fractionised crystallization, extraction procedures, washing procedures, digesting procedures, filtration procedures, chromatography, chromatography by HPLC and drying procedures, especially drying procedures in vacuo and/or elevated temperature. 5 List of Abbreviations and Acronyms: 10206724_I.DOC 21 AcOH acetic acid, anh anhydrous, atm atmosphere(s), BOC tert-butoxycarbonyl CDI 1,1'-carbonyl diimidazole, conc concentrated, d day(s), dec decomposition, DMAC NN-dimethylacetamide, DMPU 1,3-dimethyl-3,4,5,6-tetrahydro-2(IH)-pyrimidinone, DMF NN-dimethylformamide, DMSO dimethylsulfoxide, DPPA diphenylphosphoryl azide, EDCI 5 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide, EtOAc ethyl acetate, EtOH ethanol (100%), Et 2 0 diethyl ether, Et 3 N triethylamine, h hour(s), MeOH methanol, pet. ether petroleum ether (boiling range 30-60 0 C), temp. temperature, THF tetrahydrofuran, TFA trifluoroAcOH, Tf trifluoromethanesulfonyl. The compounds of general formula I of the present invention can be prepared 0 according to the procedures of the following Steps A and B above disclosed and the examples. In all preparative methods, all starting material is known or may easily be prepared from known starting materials. 1.2. Intermediates In all preparative methods, all starting materials are known or may be prepared 5 from known starting materials by the following general methods: 0 Br N O N Br N N ~N S 0 NH2 s N ,N 1O-- H H Br Br CH31 N 0 0 NH2OH,HCI r A N K2CO3 N DIPEA N NH 2 The compounds can be prepared by the general method, following procedures depicted in W02007/095588 (Novartis). 20 Synthesis of intermediate 1: 6-(2-Chloro-5-methoxy-phenyl) [1,2,4]triazolo[1,5-a]pyridin-2-ylamine To a solution of 2-Chloro-5-methoxy-phenylboronic acid (3.38g, 22.5 mmol, 1.5eq), 6 Bromo-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine (3.2g, 15 mmol, 1eq) and Na2CO3 25 (6.36g, 60 mmol, 4eq) in a mixture of 40ml DMF/10ml EtOH/10ml H20, was added 1.733g (1.5 mmol, 0.1 eq) of tetrakis(triphenylphospine) palladium. The reaction was refluxed for 2 hours under argon. It was then cooled off to room temperature and the 10206724_I.DOC 22 product was precipitated by water, filtered, rinsed with water, ether and pentane to give a pale yellow powder (3.21 g, 13 mmol, 90% yield). Br B(OH) 2 N H 0 N NH 2 N NH, 5 Intermediate 2: 7-(2-Chloro-5-methoxy-phenyl)-[1,2,4]triazolo[1,5 a]pyridin-2-ylamine has been synthesized according to the method disclosed for Intermediate 1 starting from 7-Bromo-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine. 0 Synthesis of intermediate 3: 3-(2-Amino-[1,2,4]triazolo[1,5-a]pyridin 6-yi)-4-chloro-phenol To a suspension of 5.560g (20.24 mmol, 1eq) of 6-(2-Chloro-5-methoxy phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine in 90 ml of dichloromethane cooled to 5 0 0 C was added carefully 60 ml of a 1M solution of IM BBr3. The solution is stirred for 2hrs. The pH is then adjusted to pH8 by adding a sturated solution of NaHCO3. The precipitated product is filtered and washed with ether and dried to give 4.856g (19 mmol, 92%) of a white powder. Intermediate 4: 3-(2-Amino-[1,2,4]triazolo[1,5-a]pyridin-7-yI)-4 0 chloro-phenol has been synthesized according to the method disclosed for Intermediate 3 starting from 7-(2-Chloro-5-methoxy-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine. INTERMEDIATES BI B2 R2 Al A2 LC/MS 5 Intermediate 1 2-Cl OCH3 H N C M+1= 274.9 2-l 5- H N M1=7. intermediate 2 2-Cl OCH3 H C N M+1274.9 Intermediate 3 2-C 5-OH H N C M+1=260.9 Intermediate 4 2-C1 5-OH H C N M+1=260.9 15 10206724_I.DOC 23 1.3. Compounds of the Invention Synthesis of compound of the Invention N*5 To 54mg (0.06 mmol, 0.03eq) of Pd 2 (dba) 3 , 18 mg (0.04 mmol, 0.02eq) of 5 5 (Di-tert-butyl-phosphanyl)-1',3',5'-triphenyl-1'H-[1,4']bipyrazoly and 265 mg (4.73 mmol, 2.15 eq) of KOH, was added 3 ml tertamylacohol and 4 00pl of water and the suspension is stirred for 10 minutes. 573 mg (2.20 mmol, 1eq) of 6-(2-Chloro-5 methoxy-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine and 713 mg (2.64 mmol, 1.2eq) of 1-[2-(4-Bromo-phenoxy)-ethyl]-pyrrolidine are then added, followed by 0 another 3ml of tertamyl alcohol and 400pl of water and the mixture is stirred at 80 0 C under argon for 3 hours. The compound is extracted by 3 times Ethyl acetate, washed with brine. The organic layers are then dried over Na 2

SO

4 , filtered and evaporated. The compound is then dissolved in methanol and HCI 1M in ether is added. The precipitated compound is then filtered, washed with ethyl acetate and ether to give 549 mg (1.13 5 mmol, 51%) of a white powder. 1-[2-(4-Bromo-phenoxy)-ethyl]-pyrrolidine could be purchased from Sigma Aldrich. Other derivatives could be synthetically obtained using classical methods of organic synthesis. Some compounds could also be purified by prep HPLC. We have used an Agilent 0 1200 series semi-prep with UV detector monitoring at 254 nm. Compounds were purified on a ZORBAX, SB-C18 column (21,2mmx100mm, 5pm). The gradient was typically performed using a H20/Acetonitrile gradient (from a range starting from 5 to 50% water to 95% acetonitrile) at a flow rate of 50ml/mn during 15 min. 25 The following compounds of the Invention were made in a similar way as described above : Examples Name MS NMR (200MHz, DMSOd6) compound 4-Chloro-3-{2-[4- M+1= 450.1 5 (2-pyrrolidin-1-yl- NMR: 10.89 (bb, 1H); 9.58 (bb, 1H); 8.84 (t, 1H); 7.62 (m, 4H); 7.38 (d, 1H); 6.84-7.01 (m, 4H); ethoxy)- 4.31 (t, 2H); 3.55 (m, 4H); 3.10 (m, 2H); 2.17 phenylamino]- 1.74 (m, 4H) 10206724_I.DOC 24 [1,2,4]triazolo[1,5 a]pyridin-6-yl} phenol, hydrochloride compound 2-{4-[6-(2-Chloro- M+1= 507.1 6 5-hydroxy-phenyl) [1,2,4]triazolo[1,5 a]pyridin-2 ylamino]-phenoxy} 1-((R)-3 dimethylamino pyrrolidin-1-yl) ethanone, hydrochloride compound 1-{4-[6-(2-Chloro- M+1= 518.1 7 5-hydroxy-phenyl)- NMR: 9.95 (bb, 1H, OH); 9.51 (s, 1H, NH); 8.82 (t, 1H); 7.64 (d, 2H); 7.58 (d, 2H); 7.46 (d, 2H); [1,2,4]triazolo[1,5- 7.38 (d, 1H); 6.87 (m, 2H); 3.75 (m, 2H); 3.50 a]pyridin-2- (m, 2H); 3.28 (m, 4H); 2.52 (m, 4H); 1.67 (m, 4H) ylamino]-phenyl} 3-(2-pyrrolidin-1-yl ethyl)-imidazolidin 2-one compound (S)-1-(2-{4-[6-(2- M+1= 508.0 8 Chloro-5-hydroxy- NMR: 9.95 (bb, 1H, OH); 9.44 (s, 1H, NH); 8.82 (s 1H); 7.58 (m, 4H); 7.38 (d, 1H); 6.87 (m, phenyl)- 4H); 4.70 (s, 2H); 4.27 (m, 1H); 3.59 (m, 2H); [1,2,4]triazolo[1,5- 2.17-1.90 (m, 4H) a]pyridin-2 ylamino]-phenoxy} acetyl)-pyrrolidine 2-carboxylic acid compound 4-Chloro-3-{8- M+1= 464.1 9 methyl-2-[4-(2- NMR: 10.86 (bb, 1H); 9.58 (bb, 1H); 8.64 (s, 1H); 7.62 (d, 2H); 7.42 (s, 1H); 7.36 (d, 1H); pyrrolidin-1-yl- 6.83-7.00 (m, 4H); 4.30 (t, 2H); 3.55 (m, 4H); ethoxy)- 3.10 (m, 2H); 2.17-1.77 (m, 4H) phenylamino] [1,2,4]triazolo[1,5 a]pyridin-6-yl} phenol, 10206724_I.DOC 25 hydrochloride compound 4-Chloro-3-{2-[4- M+1= 450.1 10 (2-pyrrolidin-1-yl- NMR: 10.92 (bb, 1H, OH); 9.64 (bb, 1H, NH); )d8.81 (d, 1H); 7.64 (d, 2H); 7.55 (s, 1H); 7.38 (d, ethoxy)- 1H); 6.86-7.10 (m, 5H); 4.32 (t, 2H); 3.55 (m, phenylamino]- 4H); 3.10 (m, 2H); 1.96 (m, 4H) [1,2,4]triazolo[1,5 a]pyridin-7-yl} phenol, hydrochloride compound 4-Chloro-3-{2-[4- M + 1 = 466.1 11 (2-morpholin-4-yl- NMR: 9.95 (s, 1H); 9.45 (s, 1H); 8.84 (s, 1H);7.63(m, 4H); 7.40 (d, 1H); 6.90 (m, 4H); ethoxy)- 4.05 (t, 2H); 3.58 (m, 4H); 2.68 (t, 2H); 2.504 phenylamino]- (m, 4H) [1,2,4]triazolo[1,5 a]pyridin-6-yl} phenol compound 4-Chloro-3-{2-[3- M + 1 = 466.1 12 (2-morpholin-4-yl- NMR: 9.95 (s, 1H); 9.67 (s, 1H); 8.89 (s, 1H);7.63(s, 2H); 7.41 (m, 2H); 7.23 (m, 2H); ethoxy)- 6.87 (m, 2H); 6.50 (d, 1H); 4.07 (t, 2H); 3.59 (t, phenylamino]- 4H); 2.70 (t, 2H); 2.50 (m, 4H) [1,2,4]triazolo[1,5 a]pyridin-6-yl} phenol compound 4-Chloro-3-[2-(3- M + 1 = 403.1 13 pyrazol-1-yl- NMR: 9.95 (m, 2H); 8.91 (s, 1H);8.41 (s,1H); 8.23(s, 1H); 7.69 (m, 4H); 7.37 (m, 3H); 6.89 phenylamino)- (m, 2H); 6.55 (s, 1H) [1,2,4]triazolo[1,5 a]pyridin-6-yl] phenol compound 4-Chloro-3-{2-[4- M + 1 = 424.1 14 (2-dimethylamino- NMR: 9.96 (s, 1H); 9.43 (s, 1H); 8.82 (s, 1H);7.60(s, 4H); 7.38 (d, 1H); 6.88 (m, 4H); 3.99 ethoxy)- (t, 2H); 2.59 (t, 2H); 2.21 (s, 6H) phenylamino] [1,2,4]triazolo[1,5 a]pyridin-6-yl} phenol compound 4-Chloro-3-{2-[3- M + 1 = 424.1 NMR: 9.65 (s, 1H); 8.83 (s, 1H);7.60(s, 2H); 7.41 10206724_I.DOC 26 15 (2-dimethylamino- (m, 1H); 7.23 (m, 3H); 6.84 (m, 2H); 6.46 (d, ethoxy)- 1H); 4.02 (t, 2H); 2.62 (t, 2H); 2.19 (s, 6H) phenylamino] [1,2,4]triazolo[1,5 a]pyridin-6-yl} phenol compound 4-Chloro-3-{2-[3- M + 1 = 450.1 NMR:10.01 (s, 1H); 9.68 (s, 1H);8.90(s, 2H); 7.64 (m, 1H); 7.43 (m, 2H); 7.23 (m, 2H); 6.89 ethoxy)- (m, 2H); 6.49 (d, 1H); 4.07 (t, 2H); 2.81 (t, 2H); phenylamino]- 2.51 (m, 4H); 1.71 (m, 4H) [1,2,4]triazolo[1,5 a]pyridin-6-yl} phenol compound 4-Chloro-3-[2-(4- M + 1 = 367.0 NMR: 8.47 (s, 1H); 7.50 (s, 1H); 6.51(d, 2H); 6.38 (,s,2H);6.06 (d, 2H); 5.85 (d, 1H); 5.31 (m, phenylamino)- 2H); 3.25 (s, 2H) [1,2,4]triazolo[1,5 a]pyridin-6-yl] phenol compound 4-Chloro-3-[2-(3- M + 1 = 367.0 18 hydroxymethyl phenylamino) [1,2,4]triazolo[1,5 a]pyridin-6-yl] phenol compound 4-[6-(2-Chloro-5- M + 1 = 416.0 19 hydroxy-phenyl) [1,2,4]triazolo[1,5 a]pyridin-2 ylanino] benzenesulfonamide compound 4-Chloro-3-{2-[4- M + 1 = 397.1 20 (2-hydroxy ethoxy) phenylamino] [1,2,4]triazolo[1,5 a]pyridin-6-yl} phenol 10206724_1.DOC 27 compound 1-{4-[6-(2-Chloro- M + 1 = 421.1 NMR: 9.51 (s, 1H); 8.80 (s, 1H); 7.61(m, 4H); 21 5-hydroxy-phenyl)- 7.46 (, d,2H); 7.34 (d, 1H); 6.83 (m, 3H); 4.00 [1,2,4]triazolo[1,5- (t, 1H); 3.82 (t, 2H); 3.69 (t, 1H) a]pyridin-2 ylamino]-phenyl} imidazolidin-2-one compound 3-[6-(2-Chloro-5- M + 1 = 416.0 22 hydroxy-phenyl) [1,2,4]triazolo[1,5 a]pyridin-2 ylamino] benzenesulfonamide compound 2-{4-[6-(2-Chloro- M + 1 = 410.1 23 5-hydroxy-phenyl) [1,2,4]triazolo[1,5 a]pyridin-2 ylamino]-phenoxy} acetamide compound 2-{3-[6-(2-Chloro- M + 1 = 410.1 24 5-hydroxy-phenyl) [1,2,4]triazolo[1,5 a]pyridin-2 ylamino]-phenoxy} acetamide compound 4-Chloro-3-[2-(4- M + 1 = 421.0 25 trifluoromethoxy- NMR: 10.00 (s, 2H); 8.90 (s, 1H); 7.81 (d, 2H); 7.65 (s,2H); 7.36 (m, 3H); 6.87 (m, 2H) phenylamino) [1,2,4]triazolo[1,5 a]pyridin-6-yi] phenol compound 4-Chloro-3-[2-(4- M + 1 = 429.1 26 phenoxy- NMR: 9.94(s, 1H); 9.71 (s, 1H); 8.85 (s,1H); 7.74 (d, 2H); 7.61 (s,2H); 7.34 (m, 4H); 7.00 (m, 6H) phenylamino) [1,2,4]triazolo[1,5 a]pyridin-6-yl] phenol compound 4-Chloro-3-[2-(4- M + 1 = 415.0 27 methanesulfonyl- 10206724_I.DOC 28 phenylamino) [1,2,4]triazolo[1,5 a]pyridin-6-yl] phenol compound 3-[2-(4-Benzyloxy- M + 1 = 443.1 28 phenylamino) [1,2,4]triazolo[1,5 a]pyridin-6-yl]-4 chloro-phenol compound 1-{4-[6-(2-Chloro- M + 1 = 518.3 29 5-hydroxy-phenyl) (1,2,4]triazolo[1,5 a]pyridin-2 ylamino]-phenyl} 3-(2-pyrrolidin-1-yi ethyl)-imidazolidin 2-one compound 5-[6-(2-Chloro-5- M + 1 = 421.0 30 hydroxy-phenyl) [1,2,4]triazolo[1,5 a]pyridin-2 ylamino] benzofuran-2 carboxylic acid compound 1-{4-[6-(2-Chloro- M + 1 = 435.1 31 5-hydroxy-phenyl) [1,2,4]triazolo[1,5 a]pyridin-2 ylamino]-phenyl} 3-methyl imidazolidin-2-one compound 1-{4-[6-(2-Chloro- M + 1 = 479.1 32 5-hydroxy-phenyl) [1,2,4]triazolo[1,5 a]pyridin-2 ylamino]-phenyl} 3-(2-methoxy ethyl)-imidazolidin- 10206724_I.DOC 29 2-one compound 1-[(4-{[6-(2- M + 1 = 487.1 33 Chloro-5-hydroxy phenyl) [1,2,4]triazolo[1,5 a]pyridin-2 yl]am ino} benzene)sulfonyl] 3-ethylurea compound 1-(4-{4-[6-(2- M + 1 = 493.2 34 Chloro-5-hydroxy phenyl) [1,2,4]triazolo[1,5 a]pyridin-2 ylamino]-phenyl} piperazin-1-yl)-2 methoxy-ethanone compound (4-{4-[6-(2-Chloro- M + 1 = 526.1 35 5-hydroxy-phenyl) [1,2,4]triazolo[1,5 a]pyridin-2 ylamino]-phenyl} piperazin-1-yl) pyridin-4-yl methanone compound 1-{4-[6-(2-Chloro- M + 1 = 492.2 36 5-hydroxy-phenyl) [1,2,4]triazolo[1,5 a]pyridin-2 ylamino]-phenyl} 3-(2-pyrrolidin-1-yl ethyl)-urea compound 4-Chloro-3-{2-[4- M + 1 = 465.1 37 (2-piperazin-1-yl ethoxy) phenylamino] [1,2,4]triazolo[1,5 a]pyridin-6-yl}- 10206724_I.DOC 30 phenol 2 - SOLUBILITY ANALYSIS OF COMPOUNDS OF THE INVENTION Solubility of Compounds was determined in aqueous medium using the following 5 procedure. Two mg of Compound (2 mg) was added to 200 pl buffer (acetic acid/KOH) solution at pH 5. Solution was then stirred for 24 h at room temperature and then centrifuged 10 min at 16,000 rpm. Corresponding supernatants were analyzed by HPLC and UV detection. Calculation of a given Compound concentration was performed by 0 reporting area under the experimental slope onto a calibration slope obtained separately using DMSO-solubilised Compound at different concentrations. The tested compounds are : The reference compound in the following is as disclosed in W02005096784 (compound CL) 10206724_I.DOC 31 Compound Solubility (pH 5) Solubility (pH5) in Colour nO in % mg/mi reference < 0.001 < 0.01 Bright red 5 0.3 3 Colourless 6 0.1 1 Colourless 7 0.022 0.22 Colourless 9 0.1 1 Colourless 10 0.2 2 Colourless 12 0.02 0.2 Colourless 14 > 1 > 10 Colourless 15 0.07 0.7 Colourless 16 0.01 0.1 Colourless 3 - Measurement of inhibition constants of the compounds of the Invention.

10206724_I.DOC 32 The screening and profiling experiments described here were performed using Caliper Life Sciences' proprietary LabChip TM technology. Caliper LC3000 and EZ Reader II instruments are widely used throughout the drug discovery process for assay development, primary screening, selectivity screening, generation of Structure-Activity 5 Relationships (SARs) and Mechanism of Action (MOA) studies. The LabChip TM technology is particularly well suited for enzymatic 'targets' such as kinases, proteases, phosphatases, histone deacetylases (HDAC), phosphodiesterases (PDE), and acyl transferases. The key benefit of the technology is the separation and direct measurement of substrates and products, which allows for higher signal-to-noise ratios and fewer false 0 positive/negative results. This direct measurement also allows for the identification and elimination of enzymatic activities that are not associated with the kinase reaction of interest. General: The off-chip incubation mobility-shift kinase assay uses a microfluidic chip to 5 measure the conversion of a fluorescent peptide substrate to a phosphorylated product. The reaction mixture, from a microtiter plate well, is introduced through a capillary sipper onto the chip, where the nonphosphorylated substrate and phosphorylated product are separated by electrophoresis and detected via laser-induced fluorescence. The signature of the fluorescence signal over time reveals the extent of the reaction. The 0 phosphorylated product migrates through the chip faster than the non-phosphorylated substrate, and signals from the two forms of the peptide appear as distinct peaks. Caliper's data analysis software (HTSWA) determines peak heights, from which the ratio of product to the peak sum P/(P+S) and percent (% ) conversion is calculated. This value is used to compare compound wells to control wells present on the plate, and 25 thereby determine the % inhibition values for the compound. The formula used to calculate % inhibition is as follows, where C 100 % is the average % conversion of the 100% activity wells and C 0 % is the average % conversion of the 0% activity wells: (1-(%conversionofsample - Co%)/(Cioo%_Co%))*100 Specific: 30 LC3000 Src and Lyn Assays Compounds were dissolved in 100% DMSO and diluted to 25X the final desired screening concentration. Serial dilutions were performed to obtain the concentrations specified for particular studies. One pL of each concentration was transferred, in duplicate, to a 384-well Greiner microtiter plate. Generally, 12 pL of enzyme buffer 35 containing purified kinase (various suppliers), 100 mM HEPES, pH 7.5, 1 mM DTT (Calbiochem, 2333153), 10 mM MgCl 2 (Sigma, M-1028) or 10 mM MnCl 2 (Sigma, M- 10206724_I.DOC 33 1787) (assay specific), and 0.002% Brij-35 (Sigma, B4184) was added to each well. Compound and enzyme were allowed to pre-incubate for 15 minutes. 12 pL of peptide/ATP buffer containing 100 mM HEPES, pH 7.5, 1.5 pM fluorescein-labeled peptide (specific to kinase of interest), ATP (at Km apparent, Sigma, A9187), and 0.002% Brij-35 5 was then added to each well to initiate the reaction. Generally, reactions were incubated for 1 - 1.5 hours at room temperature to obtain adequate (15-40%) conversion of peptide to phosphorylated product in the linear range of the reaction. Reactions were terminated with the addition of 45 pL of Stop Buffer (containing 20 mM EDTA). Plates were then read on the LabChip 3000 using a 12-sipper LabChip. % conversion values 0 and % inhibition values were obtained as described and IC 50 curves of compounds were generated using Graphpad Prism Version 4 or 5.01. A nonlinear curve fit using the sigmoidal dose response - variable slope fit was used to graph IC 50 curves and determine

IC

50 values and hillslopes. It has been shown that the compounds of the Invention have IC50 against Src 5 and Lyn kinases of < 100 nM. Examples Structure Name IC50 (nM) Src (h) compound ci ci 4-Chloro-3-{2-[4- 8 5 H (2-pyrrolidin-1-yl HO- N--N O . HON Nethoxy) N Na H phenylamino] [1,2,4]triazolo[1,5 a]pyridin-6-yl} phenol, hydrochloride compound ci 2-{4-[6-(2-Chloro 6 P 5-hydroxy-phenyl) N [1,2,4]triazolo[1,5 0 a]pyridin-2 HO N-N ylamino]-phenoxy} \ NH >N 1-((R)-3 dimethylamino pyrrolidin-1-yl) ethanone, 10206724_I.DOC 34 hydrochloride compound 1-{4-[6-(2-Chloro 7 N 5-hydroxy-phenyl) [1,2,4]triazolo[1,5 a]pyridin-2 7 cI - ylamino]-phenyl} HO N 3-(2-pyrrolidin-1-yl ethyl)-imidazolidin 2-one compound OH (S).1_(2_(4_ 8 0 N Chloro-5-hydroxy phenyl) c [1,2,4]triazolo[1,5 HO >- N N a]pyridin-2 N H ylamino]-phenoxy) acetyl)-pyrrolidine 2-carboxylic acid compound C1 4-Chloro-3-{8 9 HO'NI N-H methyl-2-[4-(2 N / pyrrolidin-1-yI ethoxy) phenylamino] cI 'H [1,2,4]triazolo[1,5 a]pyridin-6-yl} phenol, hydrochloride compound CI 4-Chloro-3-{2-[4 10 HO N (2-pyrrolidin-1-y N N N ethoxy)

-

phenylamino] [1,2,4]triazolo[1,5 -H cI a]pyridin-7-yl} phenol, hydrochloride 10206724_I.DOC 35 compound 4-Chloro-3-{2-[4 11 ci 0(2-morpholin-4-yl CI / ethoxy) HO N N H phenylamino] [1,2,4]triazolo[1,5 a]pyridin-6-yl} phenol compound cI 4-Chloro-3-{2-[3 12 HO N- N N (2-morpholin-4-yl N H ethoxy) 0 phenylamino] [1,2,4]triazolo[1,5 a]pyridin-6-yl} phenol compound ci N 4-Chloro-3-[2-(3 13 HO N-N N pyrazol-1-yl N phenylamino) [1,2,4]triazolo[1,5 a]pyridin-6-yl] phenol compound N/ 4-Chloro-3-{2-[4 14 0 (2-dimethylamino CI ethoxy) HO -N phenylamino] N [1,2,4]triazolo[1,5 a]pyridin-6-yl} phenol compound c' / e 4-Chloro-3-{2-[3 15 HO \-N > N- (2-dimethylamino N Hethoxy) phenylamino] [1,2,4]triazolo[1,5 a]pyridin-6-yl} phenol compound c' \0 4-Chloro-3-{2-[3 16 IHO' N ) N-~N \-N (2-pyrrolidin-1-yI 1N -N H N ethoxy) phenylamino]- 10206724_1.DOC 36 [1,2,4]triazolo[1,5 a]pyridin-6-yl} phenol compound OH 4-Chloro-3-[2-(4 CI 17 hydroxymethyl HO -N-N - phenylamino) N [1,2,4]triazolo[1,5 a]pyridin-6-yl] phenol compound c OH 4-Chloro-3-[2-(3 HOIJ N-N hydroxymethyl N H phenylamino) [1,2,4]triazolo[1,5 a]pyridin-6-yl] phenol compound 0. -NH2 4-[6-(2-Chloro-5 S40 19 c hydroxy-phenyl) HO NN [1,2,4]triazolo[1,5 N H a]pyridin-2 ylamino] benzenesulfonamide compound 0fOH 4-Chloro-3-{2-[4 20 CI (2-hydroxy HO N ethoxy) N H phenylamino] [1,2,4]triazolo[1,5 a]pyridin-6-yl} phenol compound NH 1-{4-[6-(2-Chloro 21 N O 5-hydroxy-phenyl) /'_ [1,2,4]triazolo[1,5 N HN a]pyridin-2 HON N ylamino]-phenyl} imidazolidin-2-one compound ci / 3-[6-(2-Chloro-5 S-NH2 22 HO N-N 011 hydroxy-phenyl) _N H [1,2,4]triazolo[1,5 a]pyridin-2- 10206724_I.DOC 37 ylamino] benzenesulfonamide compound 0NH2 2-4-[6-(2-Chloro

NH

2 23 0 5-hydroxy-phenyl) c /[1,2,4]triazolo[1,5 HO ' N \ a]pyridin-2 N ylamino]-phenoxy) acetamide compound F 4-Chloro-3-[2-(4 O F 25 CI F trifluoromethoxy Ho N-N phenylamino) N [1,2,4]triazolo[1,5 a]pyridin-6-yl] phenol compound 0 - 4-Chloro-3-[2-(4 26 ci phenoxy HO NN -phenylamino) H [1,2,4]triazolo[1,5 a]pyridin-6-yl] phenol compound o0,/ 4-Chloro-3-[2-(4 27 ci methanesulfonyl HO N'-N phenylamino) H [1,2,4]triazolo[1,5 a]pyridin-6-yl] phenol compound / \ 3-[2-(4-Benzyloxy 28 phenylamino) Ci [1,2,4]triazolo[1,5 HO NN- a]pyridin-6-yl]-4 N H chloro-phenol compound N ' 1-(4-[6-(2-Chloro 31 N 4 0 5-hydroxy-phenyl) HoC / [1,2,4]triazolo[1,5 N HN a]pyridin-2 ylamino]-phenyl} 3-methyl imidazolidin-2-one 10206724_I.DOC 38 compound 1-{4-[6-(2-Chloro 32 5-hydroxy-phenyl) N4 N-n. [1,2,4]triazolo[1,5 ci / a]pyridin-2 HO N ylamino]-phenyl} N N H 3-(2-methoxy ethyl)-imidazolidin 2-one compound No 1-[(4-{6-(2-Chloro 33 NH 5-hydroxy-phenyl) ci s O [1,2,4]triazolo[1,5 a]pyridin-2 HO N y]lamino) N N H benzene)sulfonyl] 3-ethylurea compound (4-{4-[6-(2-Chloro 35 5-hydroxy-phenyl) N [1,2,4]triazolo[1,5 a]pyridin-2 H-' N-N N H ylamino]-phenyl) piperazin-1-yl) pyridin-4-yl methanone compound /---\ 4-Chloro-3-{2-[4 37 oN NH 37 0(2-piperazin-1-yl cH / ethoxy) HO N -N phenylamino] N [1,2,4]triazolo[1,5 a]pyridin-6-yl} phenol compound Benzoic acid 4- >300 38 0 chloro-3-(2-[4-(2- nM (prodrug 0 cI / \ pyrrolidin-1-yl NIN of N O N'N\ ethoXy) compound N Hphenylamino] 5) [1,2,4]triazolo[1,5 a]pyridin-6-yl} phenyl ester 10206724_L.DOC 39 Compound Benzoic acid 4 39 0 chloro-3-{2-[4-(2 (prodrug 0 | ci pyrrolidin-1-yl of N N ethoxy) NNH compound phenylamino] 10) [1,2,4]triazolo[1,5 a]pyridin-7-yl} phenyl ester Compound c / y Benzoic acid 4 40 N(N O chloro-3-{2-[3-(2 (prodrug N H pyrrolidin-1-yl of ethoxy) compound phenylamino] 16) [1,2,4]triazolo[1,5 a]pyridin-6-yl} phenyl ester It should be noted that the formula drawings of compounds 5, 6, 9 and 10 in the table above serve for illustrative purposes only, the protonation for the formation of the hydrochloride salt may also occur at a different position. 5 10206724_I.DOC 40 4 - Cell-based assays of compounds of the Invention. 5 4.1 - CellTiter-Glo (ATP) Viability/Proliferation Assay MDA-MB-231 is a human breast cancer cell line which is highly dependent on Src kinase pathway for viability and proliferation. Thus, Compounds of the present invention were evaluated for their capacity to reduce viability/proliferation of MDA-MB 0 231 cells, using two different methods that both address cell metabolic activity. In addition, some Compounds of the present invention were tested for their inhibitory against VEGF-induced proliferation of human vascular endothelial cells (HUVECs). Assay Characteristics: 5 MDA-MB-231 cells are maintained as adherent cultures of no greater than 8 0% confluent in 185 cm 2 vented culture flask in the medium specified for the cell line supplemented with 10% fetal bovine serum (FBS) at 370 C in 5% CO 2 . For proliferation assays the adherent cells are collected from culture flask with typsin-EDTA and resuspended in respective medium containing 0.1% - 5% FBS for assay. 0 The cellular content of ATP (CellTiter-Glo reagent from Promega) is measured by luminescent emission based on the following principle: In the presence of ATP (provided by the cell) luciferin is converted to oxyluciferin and light is emitted. The ATP content within the cell is proportional to the amount of oxyluciferin and luminescence produced. .5 Incubation Conditions: 0.1 ml of cells in suspension at 1,000 cells per 0.1 ml is plated on white flat bottom 96 well plates. Cells are allowed to adhere to plates for 2-4 hours before the addition of test compounds. 30 0.05 ml of test compounds suspended in medium are added to wells to give final volumes of 0.15 ml. Cultures are incubated with the test compounds for 3-4 days before the cultures are assayed for cell viability. If incubation periods are longer than 4 days the final culture volume should be increased to 0.2 ml. At the termination of treatments 0.05 ml of the culture medium are removed i5 from each well with a multichannel pipetter, pipetting from the surface of the well. In low light 0.1 ml of the CellTiter-Glo reagent is added to each well and the contents of each well are gently mixed by pipetting up and down (Cover plates with foil until each plate is read on the Envision plate reader.) 10206724_I.DOC 41 Reading: The luminescence is read on an Envision 2103 Multi-label Reader (PerkinElmer) 5 Calculation of Data: Cell proliferation is expressed as percent of control wells (untreated). It has been shown that the compounds of the Invention inhibit cell proliferation 0 with an IC50<500nM. 4.2 - WST-1 (mitochondrial metabolism) Viability/Proliferation Assay Assay Characteristics: 5 The assay measures mitochondrial metabolic activity of cultured cells is based on the rate of conversion of WST-1 substrate to a product with an optical density measured at 440 nm. MDA-MB-231 are maintained as adherent cultures of no greater than 80% 0 confluent in 185 cm 2 vented culture flask in the medium specified for the cell line supplemented with 10% fetal bovine serum (FBS) at 370 C in 5% CO 2 . For proliferation assays the adherent cells are collected from culture flask with typsin-EDTA and resuspended in respective medium containing 0.1% - 5% FBS for assay. 65 WST-1 assay (WST-1 reagent from Roche) is based on the mitochondrial metabolism of the substrate (4-[3-(4-Iodophenyl)-2-(4-nitrophenyl)-2H-5-tetrazolio] 1,3-benzene disulfonate) to formazan and measurement of its absorbance at 440 nm. Incubation Conditions: 30 Aliquots of 0.1 ml of cells are plated into wells. Cells are plated at a density of 500-1,000 cells per 0.1 ml on clear flat bottom 96-well plates. Cells are allowed to adhere to plates for 2-4 hours before the addition of test compounds. 0.05 ml of test compounds suspended in medium are added to wells to give final volumes of 0.15 ml. Cultures are incubated with the test compounds for 3-4 days before 35 the cultures are assayed for cell viability. If incubation periods are longer than 4 days the final culture volume showed be increased to 0.2 ml. At the termination of treatments 0.015 ml of the WST-1 solution is added to each well. Plates are returned to the CO 2 incubator and incubated at 37 OC for 1-3 hours.

10206724_I.DOC 42 After incubation,the plates are removed from the incubator and placed on a micro-titer plate shaker and gently shaken for 2 minutes. Readings: 5 The optical density at 440 nm of each well is determined using a Spectra-max plus 384 plate reader. Calculation of Data: Cell proliferation is expressed as percent of control wells (untreated). 0 It has been shown that the compounds of the Invention inhibit proliferation with an IC50<500nM. 5 . In vivo data Inhibition of vascular leakage in a rat model of blood-retinal barrier 5 breakdown We investigated the efficacy of topical administration of compound 5 of the invention in reducing the retinal leakage in a VEGF-induced blood-retinal barrier breakdown in the rat. Rats were treated by a single intravitreal injection of 5pl (100ng) recombinant rat VEGF 164 (RD systems) into each eye. 0 During twenty-seven hours following VEGF injection, 0.58% test compound 5 of the invention (5.8mg/ml buffer pH 5) and control without compound of the invention were administered six times by topical administration (10pl) in eyes of sixteen rats. Twenty-seven hours after the VEGF challenge, Evans blue dye (45mg/kg) was injected intravenously and the dye was allowed to circulate during two hours. 25 Then, each rat was infused with 0.05M citrate buffer pH 3.5 (37 *C) for 2 minutes to allow clearance of the dye. Immediately after said perfusion, both eyes were enucleated and Evans blue dye was extracted by incubating each retina in formamide (Qaum et al Invest. Ophthalmol. Vis. Sci.2001, Vol 42, No 10). Afterward, the absorbance was measured with a spectrophotometer at 620nm. 30 Breakdown of the blood-retinal barrier was proportional to the concentration of Evans blue in the retina normalized by Evans blue concentrations in the plasma. Results We found that compound of invention reduced vascular leakage by 71% compared to control providing evidence that the compounds of the invention are useful to 35 reduce vascular permeability and more particularly vascular permeability associated with 10206724_I.DOC 43 vitreo/retinal diseases such as diabetic retinopathy, retinal vein occlusion and wet age related macular degeneration. 6. Experimental - Ussing chamber 5 Ussing chambers were used for the permeation study each day of experiment. 3 mL of solution were placed in donor side of Ussing chambers and 3mL of Ringer solution were in receiver side. Freshly removed rabbit corneal tissue were placed between the two half chambers. Temperature was maintained at 37 0 C during all the flux study and oxygenation was 0 provided by a continuous perfusion of carbogen (oxygen/carbonic acid) (95/5), Rabbits were euthanized and the 6 corneas were removed and used immediately. 500 pL of receptor side liquid were removed from Ussing chambers and replaced by fresh buffer. The samples were analyzed immediately (less than 10 hours after collection). 100pL of donor side liquid were removed from Ussing chambers and not replaced. 5 The samples were diluted immediately (less than 1 hour) after collection and analyzed less than 10 hours after dilution. Analysis was performed on HPLC (Stationary phase: C18. Particule size: 3 pm Length: 5 cm) using a gradient from 5 to 95% ACN/water (0.1 % formic acid). At the end of the sampling period, all corneas were discarded. 0 According to this protocol, we have demonstrated that compounds of the current invention in these aqueous formulations readily cross the cornea, thus making them suitable for treatment of ophthalmic indications. The data obtained clearly demonstrate that the prodrugs (compound 38) are inactive in the cornea model, whereas the drugs (compound 5) are active.

10206724_1.DOC 44 Compound In vitro potency Colour Solubility Flux between 2 and 4 - IC50 (nM) Src I HPbCD 7% hours through 0,5 Lyn (h) pH5 (mg/ml) cm2 of rabbit cornea measured (pg/h/cm2) Compound 5 8 white 7.8 25 Compound 38 (prodrug of compound 5) > 300 white > 10 21

Claims (17)

1. Compounds having the structure (I) as well as pharmaceutically acceptable salt, hydrate, solvate or prodrug thereof : A. N R 11| X- R3 S A2-N N R2C H 5 (I) wherein: A, and A 2 is N or C, with the proviso that one of A, or A 2 is N and one of Al or A2 is carbon; RI is phenyl substituted with R9 and RIO wherein R9/R10 is Cl or OH; 0 R2 is hydrogen, CI-C4 alkyl, aryl, heteroaryl, -CN, -halogen, -CF 3 , or -OR4; R3 is hydrogen, Cl -C4 alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, -CN, -CF 3 , -OR4, -OCOR4, -COR4, -NR4R5, -NR4COR5, -NR4COOR5, -(CI-C4 alkyl)OR4, -(CL-C4 alkyl)COR4, -(C l-C4 alkyl) NR4R5, -(C l-C4 alkyl)NR4COR5, -(C l-C4 alkyl)NR4COOR5, X is a bond, or (CH 2 )aW(CH 2 )b, (CH 2 )aW(CH 2 )bY(CH 2 )c or-[(CH 2 )aW(CH 2 )b]m 5 (Z)e-[( CH 2 )cY(CH 2 )d]n wherein: a, b, c and d are independently 0, 1, 2 or 3, e is 0, 1 or 2, and n and m are independently 0 or 1, and W is -CO-,-O-,-SO 2 -,- CH 2 -,-CHOH-, -NR6-, NR7CONR8 or NR7SO 2 NR8, 20 and Y is -CO-,-O-,-SO 2 -,-CH 2 -,-CHOH-or-NR6-, NR7CONR8 or NR7SO 2 NR8 and 1000080807_.DOC 46 Z is selected from the group consisting of cycloalkyl, heterocycloalkyl, aryl and heteroaryl, and when e is 2, then each Z moiety is selected independently from one another R4, R5 and R6 are independently hydrogen, Cl -C4 alkyl and where R4 and R5 5 together can form a 5-7 membered ring, R7 and R8 are independently hydrogen, C1 -C4 alkyl and where R7 and R8 together can form a 5-7 membered ring, wherein the compound is not N a/N C or N 10

2. Compound of claim 1, wherein RI is substituted with R9 and RIO in positions 2, 5 or 6 or pharmaceutically acceptable salt, hydrate, solvate or prodrug thereof.

3. Compound of any of previous claims wherein R2 is selected in the group of hydrogen and C1 -C4 alkyl or pharmaceutically acceptable salt, hydrate, solvate or prodrug thereof. 15

4. Compound of any of previous claims wherein X is (CH 2 )aW(CH 2 )b with a is 0, b is 2, W is -0- or pharmaceutically acceptable salt, hydrate, solvate or prodrug thereof.

5. Compound of any of previous claims wherein X is (CH 2 )aW(CH 2 )bY(CH 2 )c with a is 0, b is 1 and c is 0, W is -0- and Y is -CO- or pharmaceutically acceptable salt, hydrate, solvate or prodrug thereof. 1000080807_I.DOC 47

6. Compound of any of previous claims wherein X is -[(CH 2 )aW(CH 2 )b]m-Z-[( CH 2 )cY(CH 2 )d]n with m is 0, n is 1, c is 0, d is 0 or 2, Y is -CO- or is absent and Z is imidazoline-2-one or a piperazine or pharmaceutically acceptable salt, hydrate, solvate or prodrug thereof. 5

7. Compound of any of previous claims wherein R3 is a heterocycloalkyl, or pharmaceutically acceptable salt, hydrate, solvate or prodrug thereof.

8. Compound of any of previous claims wherein R3 is a pyrrolidine, or pharmaceutically acceptable salt, hydrate, solvate or prodrug thereof.

9. Compound of any of previous claims wherein R3 is substituted with R9 wherein R9 0 as a substituent of R3 is -COOH , -N[CH 3 ] 2 or -COOR4 wherein R4 is Cl-C4 alkyl or pharmaceutically acceptable salt, hydrate, solvate or prodrug thereof.

10. Compound of any of previous claims wherein R3 is an heteroaryl, or pharmaceutically acceptable salt, hydrate, solvate or prodrug thereof.

11. Compound of any of previous claims wherein R3 is a pyridine, or pharmaceutically 5 acceptable salt, hydrate, solvate or prodrug thereof.

12. Compound of claim I wherein it is selected in the group consisting of: 4-Chloro-3- {2-[4-(2-pyrrolidin-1 -yl-ethoxy)-phenylamino]-[1,2,4]triazolo[1,5 a]pyridin-6-yl} -phenol, hydrochloride 2-(4-[6-(2-Chloro-5-hydroxy-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamino] 20 phenoxy}-1-((R)-3-dimethylamino-pyrrolidin-1-yl)-ethanone, hydrochloride 1-{4-[6-(2-Chloro-5-hydroxy-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamino] phenyl}-3-(2-pyrrolidin-1-yl-ethyl)-imidazolidin-2-one (S)-1-(2-{4-[6-(2-Chloro-5-hydroxy-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamino] phenoxy}-acetyl)-pyrrolidine-2-carboxylic acid 25 4-Chloro-3-{8-methyl-2-[4-(2-pyrrolidin-1-yl-ethoxy)-phenylamino] [1,2,4]triazolo[ 1,5-a]pyridin-6-yl} -phenol, hydrochloride 1000080807_.DOC 48 4-Chloro-3-{2-[4-(2-pyrrolidin- 1 -yl-ethoxy)-phenylamino]-[ 1,2,4]triazolo[ 1,5 a]pyridin-7-yl} -phenol, hydrochloride 4-Chloro-3- { 2-[4-(2-morpholin-4-yl-ethoxy)-phenylamino]-[1,2,4]triazolo[1,5 a]pyridin-6-yl} -phenol 5 4-Chloro-3- {2-[3-(2-morpholin-4-yl-ethoxy)-phenylamino]-[1,2,4]triazolo[1,5 a]pyridin-6-yl} -phenol 4-Chloro-3-[2-(3-pyrazol-1 -yl-phenylamino)-[ 1,2,4]triazolo[ l,5-a]pyridin-6-yl] phenol 4-Chloro-3- {2-[4-(2-dimethylamino-ethoxy)-phenylamino]-[1,2,4]triazolo[ 1,5 0 a]pyridin-6-yl} -phenol 4-Chloro-3- {2-[3 -(2-dimethylamino-ethoxy)-phenylamino]- [1,2,4]triazolo[ 1,5 a]pyridin-6-yl} -phenol 4-Chloro-3- { 2-[3-(2-pyrrolidin- 1 -yl-ethoxy)-phenylamino]-[ 1,2,4]triazolo[1,5 alpyridin-6-yl } -phenol 5 4-Chloro-3-[2-(4-hydroxymethyl-phenylamino)-[1,2,4]triazolo[ 1,5-a]pyridin-6-yl] phenol 4-Chloro-3-[2-(3-hydroxymethyl-phenylamino)-[1,2,4]triazolo[ 1,5-a]pyridin-6-yl] phenol 4-[6-(2-Chloro-5-hydroxy-phenyl)-[1,2,4]triazolo[ 1,5-a]pyridin-2-ylamino] 20 benzenesulfonamide 4-Chloro-3- {2-[4-(2-hydroxy-ethoxy)-phenylamino]-[1,2,4]triazolo[1,5-a]pyridin-6 yl}-phenol 1- {4-[6-(2-Chloro-5-hydroxy-phenyl)-[I ,2,4]triazolo[ 1,5-a]pyridin-2-ylamino] phenyl}-imidazolidin-2-one Z5 3-[6-(2-Chloro-5-hydroxy-phenyl)-[ 1,2,4]triazolo[ 1,5-a]pyridin-2-ylamino] benzenesulfonamide 1000080807_I.DOC 49 2- {4-[6-(2-Chloro-5-hydroxy-phenyl)-[ 1,2,4]triazolo[ 1,5-a]pyridin-2-ylamino] phenoxy}-acetamide 2- {3-[6-(2-Chloro-5-hydroxy-phenyl)-[ 1,2,4]triazolo[1,5-a]pyridin-2-ylamino] phenoxy}-acetamide 5 4-Chloro-3-[2-(4-trifluoromethoxy-phenylamino)-[1,2,4]triazolo[ 1,5-a]pyridin-6-yl] phenol 4-Chloro-3 -[2-(4-phenoxy-phenylamino)- [1,2,4]triazolo [1,5 -a]pyridin-6-yl] -phenol 4-Chloro-3- [2-(4-methanesulfonyl-phenylamino)-[ 1,2,4]triazolo[ 1,5-a]pyridin-6-yl] phenol 0 3-[2-(4-Benzyloxy-phenylamino)- [1,2,4]triazolo [1,5-a]pyridin-6-yl] -4-chloro-phenol 1- {4-[6-(2-Chloro-5-hydroxy-phenyl)-[ 1,2,4]triazolo[ 1,5-a]pyridin-2-ylamino] phenyl} -3-(2-pyrrolidin- 1 -yl-ethyl)-imidazolidin-2-one 5-[6-(2-Chloro-5-hydroxy-phenyl)-[ 1,2,4]triazolo[ 1,5-a]pyridin-2-ylamino] benzofuran-2-carboxylic acid 5 1-{4-[6-(2-Chloro-5-hydroxy-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamino] phenyl}-3-methyl-imidazolidin-2-one 1-{4-[6-(2-Chloro-5-hydroxy-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamino] phenyl}-3-(2-methoxy-ethyl)-imidazolidin-2-one 1-[(4-{[6-(2-chloro-5-hydroxyphenyl)-[1,2,4]triazolo[1,5-a]pyridin-2 20 yl]amino}benzene)sulfonyl]-3-ethylurea 1-(4-{4-[6-(2-Chloro-5-hydroxy-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamino] phenyl } -piperazin- 1 -yl)-2-methoxy-ethanone (4- {4-[6-(2-Chloro-5 -hydroxy-phenyl)-[ 1,2,4]triazolo[ 1,5-a]pyridin-2-ylamino] phenyl} -piperazin- 1 -yl)-pyridin-4-yl-methanone 25 1- {4-[6-(2-Chloro-5-hydroxy-phenyl)- [1,2,4]triazolo[ 1,5-a]pyridin-2-ylamino] phenyl} -3 -(2-pyrrolidin- I -yl-ethyl)-urea 1000080807_I.DOc 50 4-Chloro-3-{2-[4-(2-piperazin- I -yl-ethoxy)-phenylamino]-[ 1,2,4]triazolo[ 1,5 a]pyridin-6-yl}-phenol, or pharmaceutically acceptable salt, hydrate, solvate or produrug thereof.

13. Compound of claim 1, selected from 5 4-Chloro-3-{2-[4-(2-pyrrolidin-1-yl-ethoxy)-phenylamino]-[1,2,4]triazolo[1,5 a]pyridin-6-yl } -phenol, hydrochloride; 2-{4-[6-(2-Chloro-5-hydroxy-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamino] phenoxy}-1-((R)-3-dimethylamino-pyrrolidin-1-yl)-ethanone, hydrochloride; 4-Chloro-3-{2-[4-(2-pyrrolidin-1-yl-ethoxy)-phenylamino]-[1,2,4]triazolo[1,5 0 a]pyridin-7-yl} -phenol, hydrochloride; 4-Chloro-3-{2-[3-(2-pyrrolidin-1-yl-ethoxy)-phenylamino]-[1,2,4]triazolo[1,5 a]pyridin-6-yl} -phenol, and 4-Chloro-3-{2-[4-(2-piperazin-1-yl-ethoxy)-phenylamino]-[-1,2,4]triazolo[1,5 a]pyridin-6-yl}-phenol, or prodrug thereof. 5

14. Compound of claim 1, which is 4-Chloro-3-(2-[4-(2-pyrrolidin-1 -yl-ethoxy)-phenylamino]-[1,2,4]triazolo[1,5 a]pyridin-6-yl}-phenol, hydrochloride or prodrug thereof.

15. A compound of claim 13 or 14 which is Benzoic acid 4-chloro-3-{2-[4-(2-pyrrolidin 1 -yl-ethoxy)-phenylamino]-[ 1,2,4]triazolo[ 1,5-a]pyridin-6-yl } -phenyl ester 20 (compound 38).

16. A compound of claim 14 which is selected from Benzoic acid 4-chloro-3-{2-[4-(2 pyrrolidin-1-yl-ethoxy)-phenylamino]-[1,2,4]triazolo[1,5-a]pyridin-7-yl}-phenyl ester (compound 39) and Benzoic acid 4-chloro-3-{2-[3-(2-pyrrolidin-1-yl-ethoxy)-phenylamino] [1,2,4]triazolo[1,5-a]pyridin-6-yl}-phenyl ester (compound 40). 25

17. A compound according to claim 1, substantially as hereinbefore described.