2-amino-3-(imidazol-2-yl)-pyridin-4-one derivatives and their use as VEGF receptor kinase inhibitors

1. A method of:

(a) treating glioblastomas, multiple myelomas, Kaposi's sarcomas, cutaneous angiosarcomas, lymphomas, melanomas, breast cancers, colorectal cancers, lung cancers, pancreatic cancers, prostate cancers, kidney cancers, head and neck cancers, liver cancer, ovarian cancers, cancers of the respiratory tract and chest, or other tumours expressing VEGFR-3 or involving a process of angiogenesis or of lymphangiogenesis;

(b) treating diseases selected from the group consisting of psoriasis, lymphangiomas, glaucomas, glomerulonephritis, diabetic nephropathies, nephrosclerosis, liver cirrhosis, organ transplant rejection, and eye diseases involving a process of angiogenesis or of lymphangiogenesis;

(c) treating rheumatoid arthritis; or

(d) treating lymphagioleiomyomatosis or Gorham's Disease;

in a patient in need thereof comprising administering to said patient a therapeutically effective amount of a pharmaceutical composition comprising a compound, or a pharmaceutically acceptable salt, or an enantiomer or a diastereomer, or a mixture thereof, wherein the compound is of the formula (I):

in which:

W represents a nitrogen atom or a group CH;

Y represents a group C 2 -C 3 -alkynylene or a 1,4-phenylene optionally substituted with R 7 which represents one or more halogen atom(s);

z represents a bond or a group CR 1 R 2 ;

R 1 and R 2 , independently of each other, represent a group chosen from a hydrogen atom, a group C 1 -C 6 -alkyl, a trifluoromethyl group, a group (CH 2 ) n OR 6 , C 3 -C 7 -cycloalkyl, an heteroaryl or an aryl optionally substituted with one or more halogen atom(s);

R 1 and R 2 can form together, with the carbon atom which bear them, a C 3 -C 7 -cycloalkyl;

R 3 represents a hydrogen atom;

R 4 represents a group chosen from a group C 1 -C 6 -alkyl, a group (CH 2 ) n OR 6 , C 3 -C 7 -cycloalkyl or C 1 -C 6 -alkyl optionally substituted by a C 3 -C 7 -cycloalkyl;

R 5 represents a group chosen from a hydrogen atom or a group C 1 -C 6 -alkyl;

R 6 represents a group chosen from a hydrogen atom or a group C 1 -C 6 -alkyl;

n is equal to 1, 2 or 3;

in the form of the base or of an acid-addition salt.

2. The method according to claim 1 , wherein in the compound: W represents a group CH, in the form of the base or of an acid-addition salt.

3. The method according to claim 1 , wherein in the compound: W represents a nitrogen atom, in the form of the base or of an acid-addition salt.

4. The method according to claim 1 , wherein in the compound: Y represents a group C 2 -C 3 -alkynylene, in the form of the base or of an acid-addition salt.

5. The method according to claim 1 , wherein in the compound:

R 1 represents a group chosen from a hydrogen atom, a group C 1 -C 6 -alkyl, a group (CH 2 ) n OR 6 , C 3 -C 7 -cycloalkyl, an aryl or a 5- or 6-membered-heteroaryl;

R 2 represents a group chosen from a hydrogen atom, a group C 1 -C 6 -alkyl or a trifluoromethyl group;

in the form of the base or of an acid-addition salt.

6. The method according to claim 1 , wherein in the compound:

z represents a group CR 1 R 2 ;

R 1 represents a group chosen from a hydrogen atom, a group C 1 -C 6 -alkyl, a group (CH 2 ) n OR 6 , C 3 -C 7 -cycloalkyl, an aryl or a 5- or 6-membered-heteroaryl;

R 2 represents a group chosen from a hydrogen atom, a group C 1 -C 6 -alkyl or a trifluoromethyl;

in the form of the base or of an acid-addition salt.

7. The method according to claim 1 , wherein in the compound: R 4 represents a group chosen from a group (CH 2 ) n OR 6 , C 3 -C 7 -cycloalkyl or C 1 -C 6 -alkyl optionally substituted by a C 3 -C 7 -cycloalkyl, in the form of the base or of an acid-addition salt.

8. The method according to claim 1 , wherein in the compound: R 4 represents a group C 1 -C 6 -alkyl, in the form of the base or of an acid-addition salt.

9. The method according to claim 1 , wherein in the compound: R 5 represents a group C 1 -C 6 -alkyl, in the form of the base or of an acid-addition salt.

10. The method according to claim 1 , wherein in the compound: R 5 represents a hydrogen atom, in the form of the base or of an acid-addition salt.

11. The method according to claim 1 , wherein in the compound:

Y represents a group C 2 -C 3 -alkynylene or a 1,4-phenylene optionally substituted with R 7 which represents a halogen atom;

R 1 represents a group chosen from a hydrogen atom, a group C 1 -C 6 -alkyl, a group (CH 2 ) n OR 6 , C 3 -C 7 -cycloalkyl, an aryl or a 5- or 6-membered-heteroaryl optionally substituted with a halogen atom;

R 2 represents a group chosen from a hydrogen atom, a group C 1 -C 6 -alkyl or a trifluoromethyl group;

in the form of the base or of an acid-addition salt.

12. The method according to claim 1 , wherein in the compound: R 1 and R 2 form together, with the carbon atom which bear them, a C 3 -C 7 -cycloalkyl, in the form of the base or of an acid-addition salt.

13. The method according to claim 1 , wherein in the compound is selected from the group consisting of:

2-Amino-1-ethyl-7-((3R)-3-hydroxy-4-methoxy-3-methyl-but-1-ynyl)-3-(1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-1-propyl-7-((3R)-3-hydroxy-4-methoxy-3-methyl-but-1-ynyl)-3-(1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-7-(3,4-dihydroxy-3-methyl-but-1-ynyl)-1-ethyl-3-(1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-1-ethyl-7-(-3-hydroxy-3-pyridin-2-yl-but-1-ynyl)-3-(1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-1-ethyl-7-[(3R)-3-hydroxy-4-methoxy-3-methyl-but-1-ynyl]-3-(4-methyl-1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-1-(cyclopropylmethyl)-7-(3-hydroxy-pent-1-ynyl)-3-(1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-1-ethyl-7-[(3R)-3-hydroxy-4-methoxy-3-methyl-but-1-ynyl]-3-(1H-imidazol-2-yl)-1H-quinolin-4-one;

2-Amino-7-(3-chloro-4-hydroxy-phenyl)-1-ethyl-3-(1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-1-ethyl-7-[3-(2-fluorophenyl)-3-hydroxy-but-1-ynyl]-3-(1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-1-cyclopentyl-7-(3-hydroxy-pent-1-ynyl)-3-(1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-7-(3-hydroxy-pent-1-ynyl)-3-(1H-imidazol-2-yl)-1-(3-methoxypropyl)-1H-[1,8]naphthyridin-4-one;

2-Amino-7-(3-hydroxy-pent-1-ynyl)-3-(1H-imidazol-2-yl)-1-(2-methoxyethyl)-1H-[1,8]naphthyridin-4-one;

2-Amino-1-ethyl-7-[(1-hydroxycyclobutyl)ethynyl]-3-(1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-1-ethyl-7-[(1-hydroxycyclopentyl)ethynyl]-3-(1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-1-ethyl-7-(3-hydroxy-3-methyl-but-1-ynyl)-3-(1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-1-ethyl-7-(3-hydroxy-3-methyl-pent-1-ynyl)-3-(1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-1-ethyl-7-(3-hydroxy-3-phenyl-but-1-ynyl)-3-(1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-1-ethyl-7-[3-(3-fluorophenyl)-3-hydroxy-but-1-ynyl]-3-(1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-1-ethyl-3-(1H-imidazol-2-yl)-7-(4,4,4-trifluoro-3-hydroxy-3-phenyl-but-1-ynyl)-1H-[1,8]naphthyridin-4-one;

2-Amino-7-(3-cyclopropyl-3-hydroxy-but-1-ynyl)-1-ethyl-3-(1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-1-ethyl-7-[3-hydroxy-3-(thiophen-2-yl)but-1-ynyl]-3-(1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-1-ethyl-7-(3-hydroxy-but-1-ynyl)-3-(1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-1-ethyl-7-(3-hydroxy-pent-1-ynyl)-3-(1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-1-ethyl-7-(3-hydroxy-hex-1-ynyl)-3-(1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-1-ethyl-7-(3-hydroxy-4-methyl-pent-1-ynyl)-3-(1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-1-ethyl-7-(3-hydroxy-3-phenyl-prop-1-ynyl)-3-(1H-imidazol-2-yl)-1H-[1,8]naphthyridin-4-one;

2-Amino-7-((3R)3,4-dihydroxy-3-methyl-but-1-ynyl)-1-ethyl-3-(1H-imidazol-2-yl)-1,8-naphthyridin-4(1H)-one;

2-Amino-7-((3S)3,4-dihydroxy-3-methyl-but-1-ynyl)-1-ethyl-3-(1H-imidazol-2-yl)-1,8-naphthyridin-4(1H)-one; and

2-Amino-1-ethyl-7-((3S)-3-hydroxy-4-methoxy-3-methyl-but-1-ynyl)-3-(1H-imidazol-2-yl)-1,8-naphthyridin-4(1H)-one.

14. The method according to claim 1 , wherein the method is of treating glioblastomas, multiple myelomas, Kaposi's sarcomas, cutaneous angiosarcomas, lymphomas, melanomas, breast cancers, colorectal cancers, lung cancers, pancreatic cancers, prostate cancers, kidney cancers, head and neck cancers, liver cancer, ovarian cancers, cancers of the respiratory tract and chest, or other tumours expressing VEGFR-3 or involving a process of angiogenesis or of lymphangiogenesis.

15. The method according to claim 1 , wherein the method is of treating diseases selected from the group consisting of psoriasis, lymphangiomas, glaucomas, glomerulonephritis, diabetic nephropathies, nephrosclerosis, liver cirrhosis, organ transplant rejection, and eye diseases involving a process of angiogenesis or of lymphangiogenesis.

16. The method according to claim 1 , wherein the method is of treating rheumatoid arthritis.

17. The method according to claim 1 , wherein the method is of treating lymphagioleiomyomatosis or Gorham's Disease.