Cardiotonic composition and method for increasing cardiac contractility using an effective amount of a cardiotonic lower-alkyl 2-halo-5-PY-6-Q'-nicotinate or pharmaceutically-acceptable acid-addition salt thereof, where halo is chloro or bromo, Q' is hydrogen or lower-alkyl and PY is 4- or 3-pyridinyl or 4- or 3-pyridinyl having one or two lower-alkyl substituents. Also shown are novel lower-alkyl 2-halo-5-PY-6-(lower-alkyl)nicotinates or pharmaceutically-acceptable acid-addition salt thereof, useful as intermediates or cardiotonics and preparation thereof.
心力衰竭组合物及增加心脏收缩力的方法,使用有效量的心力衰竭低烷基2-卤代-5-PY-6-Q'-
烟酸盐或其药用可接受的酸盐,其中卤代是
氯或
溴,Q'是氢或低烷基,PY是4-或3-
吡啶基或4-或3-
吡啶基,具有一个或两个低烷基取代基。还显示了新型的低烷基2-卤代-5-PY-6-(低烷基)
烟酸盐或其药用可接受的酸盐,可用作中间体或心力衰竭药物和其制备方法。