Patent ID: 8680126

Claim:
A compound of formula (I) or a pharmaceutically acceptable salt thereof, or a stereoisomer thereof or a mixture of stereoisomers, wherein: R 1 is a radical selected from the group consisting of: phenyl, and phenyl mono-, di-, or tri-substituted by a radical independently selected from the group consisting of F, Cl, Br, I, (C 1 -C 6 )-alkyl, COO—(C 1 -C 6 )-alkyl, and (C 1 -C 6 )-alkoxy; and R 2 is a radical selected from the same group as R 1 , further including, a phenyl substituted in 4-position by a radical independently selected from the group consisting of —O(CH 2 )CONH(CH 2 ) 3 CH 3 and —OCH 2 COOC(CH 3 ) 3 , a biphenyl-4-yl, a thiazol-2-yl, and a thiazol-2-yl mono- or di-substituted, in 4 or 5 positions, by a radical selected from the group consisting of F and phenyl.