1,4-Dihydropyridine derivatives

摘要

New 1,4-dihydropyridine derivatives of the formula [I] are provided: <IMAGE> [I] wherein R1 represents a C1-4 alkyl group or a C3-6 alkoxyalkyl group, R2 represents a C1-8 alkyl group, and A represents an unsubstituted hexamethylene group or a substituted hexamethylene group having one or two C1-3 alkyl groups. The 1,4-dihydropyridine derivatives have vasodilating and hypotensive activity which is kept for a long period, and are useful in the treatment of cardiovascular disease and hypertention.