New 3-substituted-2-oxo-tetrahydro-pyrrolo[1,2-a]pyrimidines of the formula (II) ##STR1## or a pharmaceutically acceptable acid addition or quaternary ammonium salts thereof are disclosed, wherein R is hydrogen or lower alkyl; R.sup.1 is lower alkyl, phenyl, carboxyl, lower alkoxycarbonyl, nitrile, carbamoyl, or carbohydrazido; and R.sup.2 is hydrogen or lower alkyl. The compounds exert a positive inotropic activity on the heart and have digitalis-like activity.
                            公开了式子(II)的新的3-取代-2-氧代-四氢-
吡咯并[1,2-a]
嘧啶,或其药学上可接受的酸加合物或季
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、
氨基甲酰基或羧
肼基;R.sup.2为氢或低级烷基。这些化合物对心脏具有正性肌力作用,并具有类洋地黄活性。