Patent ID: 6133443
Filing Date: 2000-10-17
Classification: A61P,C07D

Abstract:
An optically active 1,4-dihydropyridine compound of formula (I) ##STR30## wherein R.sup.1 is a C.sub.1 -C.sub.6 alkyl; R.sup.2 is a heterocycle of 5 or 6 ring atoms, the heterocycle comprising as ring atoms, in any combination, C, N, S or O and wherein the heterocycle is optionally substituted with C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.5 alkoxycarbonyl, dialkylamino, carbamoyl, or cyano, provided that at least one of the ring atoms is a quaternary ammonium; n is 1, 2 or 3; A is an anion.