4-Benzylpiperidine derivatives, a process for preparing them and pharmaceutical compositions containing them.

摘要

4-Benzylpiperidine derivatives of the formula: <CHEM> or a pharmaceutically accpetable acid addition salt thereof, wherein X is hydrogen or fluorine and R is hydrogen, or a group selected from p-fluorobenzoyl, alpha-hydroxy-p-fluorobenzyl, p-fluorophenoxy, bis(p-fluorophenyl)methyl and 8-azaspiro [4,5] decane-7,9-dione-8-yl-methyl with the proviso that X and R may not be simultaneously hydrogen and p-fluorobenzoyl respectively. Such compounds are useful as sigma-receptor ligands.