PIPERIDYLIDENE-12H-BENZO(A)XANTHENE,BENZO(A)THIOXANTHENE AND 8,13-DIHYDROBENZO(E)NAPHTH(2,1-B)OXEPIN DERIVATIVES,PROCESS FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM

摘要

Novel piperidylidene derivatives of benzo-fused xanthenes, thioxanthenes and dibenzoxepins administered internally to an animal host, in therapeutically effective amounts, produce antipsychotic activity essentially free of extrapyramidal symptoms.