Patent ID: 7750025

Claim:
A compound of formula (I) in which R 1 represents either a hydrogen atom or a linear or branched (C 1 -C 7 )alkyl group optionally substituted with one or more fluorine atoms, or a (C 3 -C 7 )cycloalkyl group, or a (C 3 -C 7 )cycloalkyl (C 1 -C 3 )alkyl group, or a phenyl(C 1 -C 3 )alkyl group optionally substituted with one or two methoxy groups, or a (C 2 -C 4 )alkenyl group, or a (C 2 -C 4 )alkynyl group, X represents a hydrogen atom or one or more substituents chosen from halogen atoms and trifluoromethyl and linear or branched (C 1 -C 4 )alkyl and (C 1 -C 4 )alkoxy groups, R 2 represents a group chosen from thienyl, and benzothienyl, and optionally substituted with one or more substituents chosen from halogen atoms and (C 1 -C 4 )alkyl, (C 1 -C 4 )alkoxy, thio(C 1 -C 4 )alkyl or phenyl groups optionally substituted with one or more substituents chosen from halogen atoms and trifluoromethyl, (C 1 -C 4 )alkyl and (C 1 -C 4 )alkoxy groups, in the form of free base or of acid-addition salt.