A N-substituted 3,4-dihydropyrimidine derivative of the formula (1): ##STR1## Wherein R.sup.1 is --(CH.sub.2).sub.n --X; X is substituted aminoethyl, substituted sulfideethyl, substituted or nonsubstituted heterocyclo-ethyl wherein the ethylene group is directly bonded to a hetero atom in the heterocyclic ring, or substituted or nonsubstituted heterocyclo-methyl wherein the methylene group is directly bonded to a carbon atom in the heterocyclic ring; n is an integer from 0 to 8; R.sup.2 is straight, branched cyclic or cyclo-straight alkyl having from one to thirteen carbon atoms, or aralkyl having from seven to thirteen carbon atoms and pharmacologically acceptable acid additional salts thereof have substantially strong and long lasting effects. Therefore the compounds are useful as agents for treating disorders of the cardiovascular system, and are useful, for example, as antihypertensive agents, circulation improvers and antianginal agents. A process for producing the above compounds economically and effectively is also disclosed.
一种N-取代的3,4-二氢
嘧啶衍
生物,
化学式如下(1):其中R.sup.1为--(CH.sub.2).sub.n --X;X为取代
氨基乙基、取代
硫醚乙基、取代或非取代杂环乙基,其中
乙烯基直接键合到杂环环中的杂原子,或取代或非取代杂环甲基,其中亚甲基直接键合到杂环环中的碳原子;n为0至8的整数;R.sup.2为直链、支链、环状或环-直链烷基,含有1至13个碳原子,或含有7至13个碳原子的芳基烷基,以及其药理学上可接受的酸附加盐具有显著强而持久的作用。因此,这些化合物可用作治疗心血管系统疾病的药物,例如用作降压药、循环改善剂和抗心绞痛药。还公开了一种经济有效地生产上述化合物的方法。