Patent ID: 7723517

Claim:
A compound of the formula (A5) wherein R 1 and R 2 , which may be identical or different, denote hydrogen, or a group selected from among C 1 -C 6 -alkyl, C 2 -C 6 -alkenyl and C 2 -C 6 -alkynyl, which may optionally be mono- or polysubstituted by one or more groups R 9 , or R 1 and R 2 together denote C 2 -C 6 -alkylene, in which optionally one or two methylene groups may be replaced by one of the groups —O or —NR 7 , and which may optionally be mono- or polysubstituted by one or more groups R 9 ; R 3 denotes hydrogen or a group selected from C 1 -C 8 -alkyl, C 2 -C 8 -alkenyl, C 2 -C 8 -alkynyl, C 3 -C 8 -cycloalkyl and C 6 -C 14 -aryl, which may optionally be mono- or polysubstituted by one or more groups R 9 ; or R 3 and R 2 or R 3 and R 1 together denote C 2 -C 6 -alkylene which may optionally be mono- or polysubstituted by one or more groups R 9 ; R 7 denotes hydrogen or C 1 -C 6 -alkyl, R 9 denotes halogen, CN, OH or CF 3 ; optionally in the form of the tautomers, racemates, enantiomers, diastereomers and mixtures thereof, and optionally in the form of the acid addition salts thereof.