Studies on histamine H2 receptor antagonists. 2. Synthesis and pharmacological activities of N-sulfamoyl and N-sulfonyl amidine derivatives
作者:Isao Yanagisawa、Yasufumi Hirata、Yoshio Ishii
DOI:10.1021/jm00393a018
日期:1987.10
tested in vitro for H2 antihistamine activity on guinea pig atrium. In addition, several selected compounds were assessed as inhibitors of gastric acid secretion induced by histamine in anesthetized dogs. Structure-activity relationship studies showed that those compounds containing 2-[(diaminomethylene)amino]thiazole exhibited potent H2-receptorantagonistactivity. Introduction of alkyl or aralkyl groups
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