BENZOCYCLOHEPTATHIOPHENES

摘要

Case 100-4362 n4-(9,10-Dihydro-4H-Benzo¢4,5!Cyclcohepta¢1,2-b!Thiophen- 4-Ylidene)Piperidine Compounds This invention provides new compounds of formula I, (I) wherein R1 is hydrogen or alkyl, and R2 is alkyl, useful as analgesics.