A process for preparing a 2-carbamoyloxyalkyl-1,4-dihydropyridine derivative represented by the general formula: ##STR1## which comprises: (a) reacting a 3-amino-3-carbamoyloxyalkylacrylic acid derivative represented by the general formula: ##STR2## with a benzylidene compound represented by the general formula: ##STR3## (b) reacting the 3-amino-3-carbamoyloxyalkylacrylic acid derivative of the general formula II with an aldehyde compound represented by the general formula: ##STR4## and a .beta.-keto-ester compound represented by the general formula: R.sup.4 --CO--CH.sub.2 --COOR.sup.2 (V) (c) reacting a 3-carbamoyloxyalkylpropiolic acid derivative represented by the general formula: ##STR5## with the benzylidene compound of the general formula III and ammonia or its salt; or (d) reacting the 3-carbamoyloxyalkylpropiolic acid derivative of the general formula VI with the aldehyde compound of the general formula IV, the .beta.-keto-ester compound of the general formula V and ammonia or its salt.
一种制备2-
氨基甲酰氧基烷基-1,4-二氢
吡啶衍生物的方法,其通式为:##STR1## 包括以下步骤:(a)将通式为:##STR2## 的3-
氨基-3-甲酰氧基烷基
丙烯酸衍
生物与通式为:##STR3## 的
苯甲醛化合物反应;(b)将通式为II的3-
氨基-3-甲酰氧基烷基
丙烯酸衍
生物与通式为IV的醛化合物和通式为R.sup.4 --CO--CH.sub.2 --COOR.sup.2(V)的β-
酮酸酯化合物反应;(c)将通式为:##STR5## 的3-甲酰氧基烷基
丙炔酸衍
生物与通式为III的
苯甲醛化合物和
氨或其盐反应;或(d)将通式为VI的3-甲酰氧基烷基
丙炔酸衍
生物与通式为IV的醛化合物、通式为V的β-
酮酸酯化合物和
氨或其盐反应。