申请人:Sterling Drug Inc.
公开号:US04265895A1
公开(公告)日:1981-05-05
1,2-Dihydro-1-R-5-PY-6-Q-3H-pyrazolo[3,4-b]pyridin-3-ones or pharmaceutically-acceptable acid-addition salts thereof, which are useful as cardiotonic agents, are prepared by reacting lower-alkyl 2-halo-5-PY-6-Q-nicotinate with 1-R-hydrazine. Also disclosed are cardiotonic compositions and method for increasing cardiotonic contractility using said compounds or salts.
1,2-二氢-1-R-5-PY-6-Q-3H-吡唑并[3,4-b]吡啶-3-酮或其药用可接受的酸盐,可用作心力增强剂,通过将低烷基2-卤代-5-PY-6-Q-烟酸酯与1-R-肼反应制备。还公开了心力增强剂组合物和使用所述化合物或盐增加心力增强性的方法。