申请人:Sterling Drug Inc.
公开号:US04469699A1
公开(公告)日:1984-09-04
3-Q-4-R.sub.2 -5-(2-Q'-5-R.sub.3 -4-thiazolyl)-6-R.sub.1 -2(1H)-pyridinones (I), where R.sub.1 is alkyl having from one to four carbon atoms, R.sub.2 is hydrogen or methyl, R.sub.3 is hydrogen or alkyl having from one to three carbon atoms, Q is amino, carbamyl, carboxy, cyano or hydrogen, and Q' is alkyl having from one to four carbon atoms, amino or R.sub.4 NH where R.sub.4 is alkyl having from one to four carbon atoms, or acid-addition salts thereof where at least one of Q and Q' is amino or Q' is R.sub.4 NH, are useful as cardiotonics (I where Q is amino, cyano or hydrogen) and/or as intermediates (I where Q is cyano, carbamyl or carboxy). Also shown as intermediates are 1,2-dihydro-4-R.sub.2 -5-[R.sub.3 CH(Br)CO]-6-R.sub.1 -2-oxo-3-pyridinecarbonitriles (II), and, also, processes for preparing I and II.
3-Q-4-R.sub.2 -5-(2-Q'-5-R.sub.3 -4-噻唑基)-6-R.sub.1 -2(1H)-吡啶酮(I),其中R.sub.1是具有一至四个碳原子的烷基,R.sub.2是氢或甲基,R.sub.3是氢或具有一至三个碳原子的烷基,Q是氨基,氨基甲酰基,羧基,氰基或氢,而Q'是具有一至四个碳原子的烷基,氨基或R.sub.4 NH,其中R.sub.4是具有一至四个碳原子的烷基,或它们的酸加成盐,其中至少有一个Q和Q'为氨基或Q'为R.sub.4 NH,可用作心脏强心剂(其中Q为氨基,氰基或氢)和/或中间体(其中Q为氰基,氨基甲酰基或羧基)。还显示了1,2-二氢-4-R.sub.2 -5-[R.sub.3 CH(Br)CO]-6-R.sub.1 -2-氧代-3-吡啶基腈(II)作为中间体,以及制备I和II的方法。