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