Disclosed are 1,4-dihydropyridine derivatives represented by the general formula (I) and salts thereof, as well as optical active 1,4-dihydropyridine derivatives represented by the general formula (II) and salts thereof which are obtained from the derivative by biochemical reactions using microorganisms or enzymes and useful as preventive and therapeutic agents for ischemic heart diseases and hypertension. ##STR1## (wherein x and Y are H, NO.sub.2, CN, halogen; R.sup.1 and R.sup.2 are H, CHO, substituted alkylcarbonyl, crotonyl, cinnamoyl, alkoxycarbonyl, aryloxycarbonyl, benzyloxycarbonyl, carboxybenzoyl, or R.sup.1 and R.sup.2 taken together represent phthaloyl; n is an integer of 1 to 3).
本发明涉及一种由一般式(I)表示的1,4-二氢
吡啶衍生物及其盐,以及由微
生物或酶催化反应得到的光学活性一般式(II)表示的1,4-二氢
吡啶衍生物及其盐,可用作缺血性心脏病和高血压的预防和治疗剂。 ##STR1##(其中x和Y为H,NO.sub.2,CN,卤素; R.sup.1和R.sup.2为H,CHO,取代基烷基羰基,
丙烯酰基,肉桂酰基,烷氧羰基,芳基氧羰基,苄氧羰基,羧基苯甲酰基,或R.sup.1和R.sup.2共同表示
邻苯二甲酰基; n为1至3的整数)。