Cardiotonic agents. 3. Synthesis and biological activity of novel 6-(substituted 1H-imidazol-4(5)-yl)-3(2H)-pyridazinones
作者:Ila Sircar、George Bobowski、James A. Bristol、Ronald E. Weishaar、Dale B. Evans
DOI:10.1021/jm00152a015
日期:1986.2
Several 6-(substituted 1H-imidazol-4(5)-yl)-3(2H)-pyridazinones were synthesized and evaluated for positive inotropic activity. The 1H-imidazol-4-yl regioisomers 4,5-dihydro-6-(1-methyl-2-phenyl-1H-imidazol-4-yl)-3(2H)-pyridazinone (25a) and 6-(1-methyl-2-phenyl-1H-imidazol-4-yl)-3(2H)-pyridazinone (28a) were potent positive inotropic agents. By contrast, the corresponding 1H-imidazol-5-yl regioisomers
几个6-(取代的1H-咪唑-4(5)-基)-3(2H)-哒嗪酮被合成并评估其正性肌力活性。1H-咪唑-4-基区域异构体4,5-二氢-6-(1-甲基-2-苯基-1H-咪唑-4-基)-3(2H)-哒嗪酮(25a)和6-(1-甲基-2-苯基-1H-咪唑-4-基)-3(2H)-哒嗪酮(28a)是有效的正性肌力药。相比之下,相应的1H-咪唑-5-基区域异构体25b和28b只是弱的正性肌力药。化合物25a和28a也是心脏磷酸二酯酶部分III的有效抑制剂。