2(1H)-Quinolinones with cardiac stimulant activity. 2. Synthesis and biological activities of 6-(N-linked, five-membered heteroaryl) derivatives
作者:Colin T. Alabaster、Andrew S. Bell、Simon F. Campbell、Peter Ellis、Christopher G. Henderson、David S. Morris、David A. Roberts、Keith S. Ruddock、Gillian M. R. Samuels、Mark H. Stefaniak
DOI:10.1021/jm00123a011
日期:1989.3
heteroaryl)-2(1H)-quinolinone derivatives was synthesized and evaluated for cardiotonic activity. Most compounds were prepared by sulfuric acid catalyzed cyclization of an N-(4-heteroarylphenyl)-3-ethoxypropenamide or by condensation of a 2-amino-5-heteroarylbenzaldehyde or -acetophenone derivative with the ylide derived from triethyl phosphonoacetate. In anesthetized dogs, 6-imidazol-1-yl-8-methyl-2(1H)-quinolinone
合成了一系列6-(N-连接的五元杂芳基)-2(1H)-喹啉酮衍生物,并评估了其强心活性。大多数化合物是通过硫酸催化N-(4-杂芳基苯基)-3-乙氧基丙烯酰胺的环化反应或将2-氨基-5-杂芳基苯甲醛或苯乙酮衍生物与衍生自膦酸三乙酯的内酯缩合制备的。在麻醉的狗中,6-咪唑-1-基-8-甲基-2(1H)-喹啉酮(3; 25微克/ kg)产生的心脏收缩力增加幅度最大(dP / dt max的百分数增加),高于其他6- (五元杂芳基)-取代的类似物(4-8)。将4-甲基(10)或2,4-二甲基(13)取代基引入3的咪唑环可产生明显的正性肌力活性,这些化合物的效力比米力农高约10倍和5倍。口服给药(0.0625-1 mg / kg)后,这些喹啉酮中的大多数也对清醒犬表现出正性肌力作用(QA间隔降低),在许多情况下(3、5-7、9、11、13、16) 1小时和3小时时间点的活动差异很小。化合物13(62