A series of trans-1-piperazino-3-phenylindans were synthesized with the goal of replacing their established neuroleptic profile with that of peripheral 5-hydroxytryptamine (5-HTz) antagonism. Compounds with an unsubstituted or fluoro-substituted 6-position in the indan ring, and which had a five-or six-membered heterocyclic ring attached by an ethylene chain to the piperazine ring, satisfied this objective. Some of the compounds had potent ...