Patent ID: 7268129

Claim:
A compound selected from those of formula (I): wherein: R F represents linear or branched monofluoro- or polyfluoro-C 1 -C 6 alkyl or monofluoro- or polyfluoro-cycloalkylalkyl wherein the alkyl moiety is C 1 -C 6 and linear or branched and the cycloalkyl moiety is C 3 -C 7 , R 1 represents hydrogen or a group selected from linear or branched C 1 -C 6 alky optionally substituted by one or more halogen atoms, and linear or branched C 1 -C 6 alkylaminocarbonyl, R 2 represents hydrogen or halogen or a group selected from linear or branched C 1 -C 6 alkyl optionally substituted by one or more halogen atoms, and from C 3 -C 7 cycloalkyl, R 3 , R 4 , R 5 and R 6 , which may be the same or different, each represent an atom or group selected from hydrogen, halogen, nitro, cyano, linear or branched C 1 -C 6 alkylsulphonyl, linear or branched C 1 -C 6 alkoxy, linear or branched C 1 -C 6 alkyl optionally substituted by one or more halogen atoms, and amino optionally substituted by one or two linear or branched C 1 -C 6 alkyl, its optical isomers when they exist, and addition salts thereof with a pharmaceutically acceptable acid or base, it being understood that R 3 represents hydrogen when R 6 does not represent hydrogen.