Patent ID: 8071773

Claim:
A compound of the formula (Iaâ€²) or (Ibâ€²) in which R is hydrogen, C 1 -C 8 -alkyl, C 1 -C 8 -alkoxy-C 0 -C 4 -alkyl, halogen, tri-C 1 -C 4 -alkylsilyl, deuterium or trifluoromethyl; R 1 together with R 2 is a ring selected from the group consisting of which rings may be substituted by 1-4 members selected from the group consisting of oxo, cyano-C 0 -C 6 -alkyl, C 0 -C 8 -alkylcarbonyl, thiophene, furan, oxazole, thiophenylcarbonyl, furanylcarbonyl and oxazolylcarbonyl, it being possible for thiophene, furan, oxazole, thiophenylcarbonyl, furanylcarbonyl and oxazolylcarbonyl to be unsubstituted or substituted by 1-4 members selected from the group consisting of C 1 -C 8 -alkyl, halogen, cyano and C 0 -C 8 -alkylcarbonyl; and â€œ*â€ denotes an asymmetric carbon atom; or a pharmaceutically acceptable salt thereof.