Patent ID: 7453010

Claim:
A compound of formula (I) wherein: R 1 is a hydrogen atom, a (C 1 -C 4 )alkyl group, a —CO(C 1 -C 4 )alkyl group, a (C 1 -C 4 )alkylphenyl group or a —CO-phenyl group, wherein the phenyl moiety is optionally substituted by one to three groups chosen, independently of one another, from halogen atoms, (C 1 -C 4 )alkyl groups and (C 1 -C 4 )alkoxy groups; R 2 is chosen from one of the following groups: a hydrogen atom, a halogen atom, an —S(O) z (C 1 -C 4 )alkyl group, where z is equal to 0, 1 or 2, an —NHSO 2 (C 1 -C 4 )alkyl group, an —NHSO 2 -phenyl group, or an —NHSO 2 —(C 1 -C 4 )alkylphenyl group, wherein the phenyl moiety is optionally substituted by one to three groups chosen, independently of one another, from halogen atoms, (C 1 -C 4 )alkyl groups and (C 1 -C 4 )alkoxy groups; and R 3 is chosen from one of the following groups: an —X—R 4 group, wherein X is a bond, an oxygen atom or a —CH 2 — group and R 4 represents a hydrogen atom or a group of formula —CR 5 R 6 —COOR 7 , where R 5 , R 6 and R 7 are, independently of one another, a hydrogen atom or a (C 1 -C 4 )alkyl group, provided that R 4 is not a hydrogen atom when X is a bond or a —CH 2 — group, a phenyl group wherein the phenyl is optionally substituted by one to three groups chosen, independently of one another, from halogen atoms, (C 1 -C 4 )alkyl groups and (C 1 -C 4 )alkoxy groups, or is fused with a dioxolane group, or a —CO—NR 8 R 9 group, wherein R 8 is a hydrogen atom, a (C 1 -C 4 )alkyl group or a (C 1 -C 4 )alkylene-(C 1 -C 4 )alkoxy group and R 9 is chosen from one of the following groups: a (C 1 -C 4 )alkylene-(C 1 -C 4 )alkoxy group, a group of formula —(CH 2 ) n -A, wherein n is equal to 0, 1, 2, 3 or 4 and A is an indolyl, fluorenyl or phenyl group, wherein the phenyl group is substituted by one to three groups independently chosen from halogen atoms, hydroxy group and (C 1 -C 4 )alkyl groups, an —NH-phenyl group, wherein the phenyl group is optionally substituted by one to three groups chosen, independently of one another, from halogen atoms, hydroxy group and (C 1 -C 4 )alkyl groups, or a group of formula —CH(R 10 )—(CH 2 ) n —COOR 11 , wherein n is equal to 0, 1, 2 or 3, R 11 is a hydrogen atom or a (C 1 -C 4 )alkyl group and R 10 is: a hydrogen atom, a (C 1 -C 4 )alkyl group, a —COOR 12 group, wherein R 12 is a hydrogen atom or a (C 1 -C 4 )alkyl group, or a —CH 2 -phenyl group, wherein the phenyl group is optionally substituted by one to three groups chosen, independently of one another, from halogen atoms, hydroxy group and (C 1 -C 4 )alkyl groups; or a salt, hydrate or solvate thereof.