A 3N-substituted 3,4-dihydropyrimidine derivative of the formula:
wherein R' is methyl or ethyl, R2 is methyl or ethyl, R is phenyl or substituted phenyl, X is chloro or methyl and pharmaceutically acceptable acid addition salts thereof have in form of pharmaceutical compositions substantially the same strong vasodilative and Ca++ antagonistic effects as nicardipine and therefore are useful as agents for treating disorders of the cardiovascular system, for example, hypotensive agents, agents for amelioration of brain circulation and anti-angina pectoris agents.
Processes for producing the above compounds economically and effectively are also disclosed.
式中 R' 为甲基或乙基,R2 为甲基或乙基,R 为苯基或取代苯基,X 为
氯或甲基的 3N 取代的 3,4-二氢
嘧啶衍
生物及其药学上可接受的酸加成盐在药物组合物形式上具有与
尼卡地平基本相同的强血管扩张和 Ca++ 拮抗作用,因此可用作治疗心血管系统疾病的药物,例如降血压药、改善脑循环的药物和抗心绞痛药。 还公开了经济有效地生产上述化合物的工艺。