Histamine H2 receptor antagonists. 1. Synthesis of N-cyano and N-carbamoyl amidine derivatives and their biological activities
作者:Isao Yanagisawa、Yasufumi Hirata、Yoshio Ishii
DOI:10.1021/jm00373a007
日期:1984.7
inhibitors of gastric acid secretion induced by histamine in anesthetized dogs. Of these compounds, furan (8c) and [(diaminomethylene)amino]thiazole derivatives (16c) were found to be more potent than cimetidine in both assays. In contrast to the guanidine series, methyl substitution at the terminal nitrogen of the cyano amidines was detrimental to the activities. Furthermore, acid hydrolysis of the cyano amidines
制备了大量的N-氰基am衍生物作为潜在的组胺H2受体拮抗剂,并评估了它们对组胺刺激豚鼠离体右心房变时反应的抑制作用。评价了几种选择的化合物作为组胺在麻醉狗中诱导的胃酸分泌的抑制剂。这些化合物中,呋喃(8c)和[(二氨基亚甲基)氨基]噻唑衍生物(16c)在两种测定中均比西咪替丁更有效。与胍系列相反,在氰基am的末端氮上的甲基取代对活性是有害的。此外,氰基am的酸水解得到氨基甲酰基am,其被证明比氰基am具有更高的活性,与胍的情况相反。