2-(1-piperazinyl)-4-phenylcycloalkanopyridine derivatives, processes for

Abstract

Novel 2-(1-piperazinyl)-4-phenyl-cycloalkanopyridine derivatives of the formula (I): ##STR1## wherein n is 3, 4, 5, 6 or 7; R.sup.1 is a hydrogen atom, C.sub.1 -C.sub.10 alkyl, C.sub.2 -C.sub.6 alkenyl, C.sub.2 -C.sub.6 alkynyl, C.sub.3 -C.sub.8 cycloalkyl, C.sub.3 -C.sub.6 cycloalkyl-(C.sub.1 -C.sub.4) alkyl, hydroxy-(C.sub.2 -C.sub.6) alkyl, C.sub.1 -C.sub.3 alkoxy-(C.sub.2 -C.sub.6) alkyl, acyloxy-(C.sub.2 -C.sub.6), alkyl, unsubstituted or substituted aroyl-(C.sub.1 -C.sub.6) alkyl, unsubstituted or substituted aryl, heteroaryl, or acyl; R.sup.2 and R.sup.3 are the same or different and are each a hydrogen atom, a halogen atom, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy, trifluoromethyl, or hydroxy; R.sup.4, R.sup.5 and R.sup.6 are the same or different and are each a hydrogen atom, C.sub.1 -C.sub.6 alkyl, or phenyl, or two of R.sup.4, R.sup.5 and R.sup.6 combine to form a single bond or C.sub.1 -C.sub.3 alkylene; R.sup.7 and R.sup.8 are the same or different and are each a hydrogen atom or C.sub.1 -C.sub.3 alkyl; m is 2 or 3, or an acid addition salt thereof, which is useful as a psychotropic drug, and processes for the preparation thereof.