Dihydropyridines of the formula:-
and their pharmaceutically acceptable acid addition salts; wherein
R is an optionally substituted aryl or heteroaryl group;
R' and R2 are each independently C1-C4 alkyl or 2-methoxyethyl;
Y is -(CH2)n- where n is 2, 3 or 4 and is optionally substituted by 1 or 2 methyl groups; and
R3 is an optionally substituted 5- or 6-membered heterocyclic group attached to the adjacent nitrogen atom by a carbon atom, said heterocyclic group being optionally fused to a further 5- or 6-membered heterocyclic group or to a benzene ring, said further heterocyclic group and benzene ring also being optionally substituted.
The compounds are calcium antagonists useful as anti-ischaemic and antihypertensive agents.
                            式中的
二氢吡啶类
及其药学上可接受的酸加成盐;其中
R 是任选取代的芳基或杂芳基;
R'和R2各自独立地为C1-C4烷基或2-甲氧基乙基;
Y 是-(
CH2)n-,其中 n 是 2、3 或 4,并任选被 1 或 2 个甲基取代;以及
R3 是一个被任选取代的 5 或 6 元杂环基团,通过一个碳原子连接到相邻的氮原子上,所述杂环基团可任选与另一个 5 或 6 元杂环基团或苯环融合,所述另一个杂环基团和苯环也可任选被取代。
这些化合物是
钙拮抗剂,可用作抗缺血和抗高血压药物。