K??ER-LAFFERTY CASE 2A 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.
PIPERIDYLIDENE DERIVATIVES OF BENZO-FUSED XANTHENES, THIOXANTHENES AND DIBENZOXEPINS