The invention relates to amide 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:-
in which R1 is a hydrogen or 1-10 C 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, the aryl, aralkyl and aroyl radical 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 into which is optionally inserted one or two groups; D is 0 or S; and R2 and R3 are hydrogen or a variety of radicals described in the specification: and the pharmaceutically-acceptable acid-addition salts thereof. Manufacturing processes and pharmaceutical compositions are also described.
本发明涉及
组胺 H-2 拮抗剂和抑制胃酸分泌的酰胺衍
生物。根据本发明提供了一种式 I 的
胍衍
生物
其中 R1 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 烷炔基、1-6C 烷酰基、6-10C 芳基、7-11C 芳烷基或 7-11C 芳烷基,芳基、芳烷基和芳烷基任选被取代;环 X 是本说明书中定义的杂环;A 是亚苯基或 5-7C 环亚烷基,或 1-8C 亚烷基,其中可选择插入一个或两个基团;D 是 0 或 S;R2 和 R3 是氢或本说明书中描述的各种基团:及其药学上可接受的酸加成盐。还描述了制造工艺和药物组合物。