Patent ID: 8420681

Claim:
A compound of formula (I): in which: R 1 and R 6 represent identical or different groups chosen from the following groups: phenyl group or naphthyl group, optionally substituted with one to three identical or different groups R a , and heteroaryl containing either a) from 1 to 4 nitrogen atoms or b) an oxygen or sulfur atom and 1 or 2 nitrogen atoms, optionally substituted with one to three identical or different groups R a , R 2 , R 3 , R 4 and R 5 are identical or different and represent: either a hydrogen atom, or a group C 1 - 6 alkyl, optionally substituted with one to three groups R a , or a group C 3-7 cycloalkyl, C 1-6 fluoroalkyl, C 1-6 fluoroalkyloxy or a group —(CH 2 ) n —C 3-7 cycloalkyl, optionally, the groups R 2 and R 3 can form with the carbon atom that bears them a group C 3-7 cycloalkyl or a heterocycle, and optionally, the groups R 4 and R 5 can form with the carbon atom that bears them a group C 3-7 cycloalkyl or a heterocycle, R a represents: either a hydrogen, fluorine, chlorine or bromine atom, or a group C 1-6 alkyl, C 3-7 cycloalkyl, C 1-6 alkyloxy, C 1-6 alkylthio, C 1-6 fluoroalkyl, or C 1-6 fluoroalkyloxy, or a group —(CH 2 ) n —C 3-7 cycloalkyl, OH, CH 2 OH, COOR b or CN, R b represents a group C 1-6 alkyl, C 3-7 cycloalkyl or —(CH 2 ) n —C 3-7 cycloalkyl, and n is an integer equal to 1, 2 or 3, and also pharmaceutically acceptable salts, solvates or hydrates thereof and conformers or rotamers thereof.