申请人:Imperial Chemical Industries PLC
公开号:US04748165A1
公开(公告)日:1988-05-31
This invention relates to amidine derivatives which are histamine H-2 antagonists and which inhibit gastric acid secretion. According to the invention there is provided a guanidine derivative of the formula I: ##STR1## in which R.sup.1 is hydrogen or a 1-10C alkyl, 3-8C cycloalkyl, 4-14C cycloalkylalkyl, 3-6C alkenyl, 3-6C alkynyl, 1-6C alkanoyl, 6-10C aryl, 7-11C aralkyl or 7-11C aroyl radical, the latter three being optionally substituted; ring X is a heterocyclic ring as defined in the specification; A is phenylene or 5-7C cycloalkylene or a 1-8C alkylene chain into which is optionally inserted one or two groups; and R.sup.2 and R.sup.3 are a variety of radicals described in the specification: and the pharmaceutically-acceptable acid-addition salts thereof. Manufacturing processes and pharmaceutical compositions are also described.
这项发明涉及对组织胺H-2拮抗剂和抑制胃酸分泌的胍衍生物。根据该发明,提供了式I的一种胍衍生物:其中R.sup.1是氢或1-10C烷基,3-8C环烷基,4-14C环烷基烷基,3-6C烯基,3-6C炔基,1-6C烷酰基,6-10C芳基,7-11C芳基烷基或7-11C芳基酰基基团,后三者可选地被取代;环X是规范中定义的杂环;A是苯基或5-7C环烷基或一个1-8C烷基链,其中可选地插入一个或两个基团;R.sup.2和R.sup.3是规范中描述的各种基团;以及它们的药用可接受的酸加合物盐。还描述了制造工艺和药用组合物。