Patent ID: 7713956

Claim:
Formula (I) compounds: wherein A is CH—CH 2 or C═CH; R is hydrogen, halogen, alkoxy C 1 -C 4 , alkylthio C 1 -C 4 , alkyl C 1 -C 4 or cycloalkyl C 5 -C 6 ; R 1 is 1-piperazinyl, 1-homopiperazinyl or 1-piperidinyl; R 2 is hydrogen, alkoxy C 1 -C 4 , alkylthio C 1 -C 4 , alkyl C 1 -C 4 , CHO, CH═NOH or CH 2 HO; provided that when R is Cl, A is not C═CH their single optical isomers, mixtures thereof, and their pharmaceutically acceptable salts.