3-Z-5-Q-1,6-naphthyridin-2(1H)-ones (I) or salts thereof, where Z is hydrogen or cyano, and Q is 2(or 3)-furanyl, 2(or 3)-thienyl, 4(or 3)-pyridinyl or 4(or 3)-pyridinyl having one or two methyl substituents, are useful as cardiotonic agents and corresponding compounds where Z is carboxy are useful as intermediates. Also shown as intermediates are 5-(Q-CO)-6-[2-(di-lower-alkylamino)ethenyl]-2(1H)-pyridinones (II) or salts thereof, where Q is defined as above. Processes for preparing said compounds (I and II) are shown.
3-Z-5-Q-1,6-
萘啶并[2(1H)-酮](I)或其盐,其中Z为氢或
氰基,Q为2(或3)-
呋喃基,2(或3)-
噻吩基,4(或3)-
吡啶基或带有一或两个甲基取代基的4(或3)-
吡啶基,可用作强心剂,而Z为羧基的相应化合物可用作中间体。还显示了5-(Q-CO)-6-[2-(二低烷基)
氨基
乙烯基]-2(1H)-
吡啶酮(II)或其盐,其中Q如上所定义,作为中间体。显示了制备所述化合物(I和II)的方法。