Chemical compounds having an effect on the circulatory system have the formulas ##STR1## or a mixture thereof, or a pharmaceutically suitable acid-addition salt or quaternary salt thereof, wherein R is hydrogen or lower alkyl, R.sup.1 is lower alkyl, phenyl, carboxyl, lower alkoxycarbonyl, nitrile, carbamoyl or carbohydrazido, R.sup.2 is hydrogen or lower alkyl, and wherein the formula I R.sup.2 is hydrogen then R.sup.1 is other than nitrile, alkoxycarbonyl or propyl.
具有影响循环系统作用的化合物的公式为 ##
STR1## 或其混合物,或其药学上适宜的酸加成盐或季
铵盐,其中 R 为
氢或低级烷基,R.sup.1 为低级烷基,
苯基,羧基,低级
氧代羰基,腈基,
氨基甲酰基或
碳酰
肼基,R.sup.2 为
氢或低级烷基,其中在公式 I R.sup.2 为
氢时,R.sup.1 不是腈基,
氧代羰基或丙基。