A quinoline derivative represented by the following formula is disclosed. ##STR1## wherein R.sub.1 represents a hydrogen atom or an alkyl group which may contain a substituent and R.sub.2 represents an alkyl group which may contain a substituent, or R.sub.1 and R.sub.2 in combination with each other and with the adjacent nitrogen atom from a ring which may contain a nitrogen atom other than said adjacent nitrogen atom, an oxygen atom, or a substituent, and R.sub.3 represents a cyano group, a carbamoyl group, or a lower alkoxycarbonyl group. The compound exhibits superior cardiotonic activity and vasodilative activity, and thus is effective as a medicine.
公开了一种由以下公式表示的
喹啉衍
生物。 ##STR1## 其中R.sub.1代表氢原子或可能含有取代基的烷基,R.sub.2代表可能含有取代基的烷基,或者R.sub.1和R.sub.2结合在一起并与相邻的氮原子形成一个环,该环可能含有除所述相邻氮原子以外的氮原子、氧原子或取代基,且R.sub.3代表
氰基、
氨基甲酰基或低烷氧基甲酰基。该化合物表现出优异的心力增强作用和血管扩张作用,因此是一种有效的药物。