DIHYDROPYRIDINE ANTI-ISCHAEMIC AND ANTIHYPERTENSIVE AGENTS, PROCESSES FOR THEIR PRODUCTION, AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM

摘要

Dihydropyridines of the formula:- …CHEM… and their pharmaceutically acceptable acid addition salts… wherein Y is -(CH2)2-, -(CH2)3-, -CH2CH(CH3)- or -CH2C(CH3)2-;… R is aryl or heteroaryl;… R1 and R2 are each independently C1-C4 alkyl or 2-methoxyethyl; and… R3 is hydrogen, C1-C4 alkyl, 2-(C1-C4 alkoxyl) ethyl, cyclopropylmethyl, benzyl, or -(CH2)mCOR4 where m is 1, 2 or 3 and R4 is hydroxy, C1-C4 alkoxy or - NRR56 where R5 and R6 are each independently hydrogen or C1-C4 alkyl, pharmaceutical compositions containing them, and processes for their production. …??The compounds are particularly useful in the treatment or prevention of a variety of cardiac conditions, e.g, angina pectoris.