申请人:Imperial Chemical Industries PLC
公开号:US04447441A1
公开(公告)日:1984-05-08
The invention relates to guanidine 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 and R.sup.2, same or different, are hydrogen or 1-10C alkyl, 3-8C cycloalkyl or 4-14C cycloalkylalkyl, each alkyl, cycloalkyl or cycloalkylalkyl optionally carrying one or more F, Cl or Br atoms, provided that one of R.sup.1 and R.sup.2 is halogen substituted, or R.sup.2 is hydrogen and R.sup.1 is R.sup.5 --E--W in which W is 2-6C alkylene optionally substituted by 1 or 2 1-4C alkyls, E is O,S or NR.sup.6 in which R.sup.6 is H or 1-6C alkyl, R.sup.5 is H or 1-6C alkyl optionally substituted by 1 or 2 1-4C alkyls, or R.sup.5 and R.sup.6 are joined to form a pyrrolidine, piperidine, morpholine, piperazine or N-methylpiperazine ring; 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 O or S; and R.sup.3 and R.sup.4 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.
本发明涉及一种胃酸分泌抑制剂,即组胺H-2拮抗剂的胍衍生物。根据本发明,提供了一种式子I的胍衍生物:- ##STR1## 其中,R.sup.1和R.sup.2,相同或不同,是氢或1-10C烷基,3-8C环烷基或4-14C环烷基烷基,每个烷基,环烷基或环烷基烷基可以携带一个或多个F、Cl或Br原子,前提是R.sup.1和R.sup.2中的一个是卤素取代的,或者R.sup.2是氢,R.sup.1是R.sup.5--E--W,其中W是2-6C烷基,可以被1或2个1-4C烷基取代,E是O、S或NR.sup.6,其中R.sup.6是H或1-6C烷基,R.sup.5是H或1-6C烷基,可以被1或2个1-4C烷基取代,或者R.sup.5和R.sup.6连接形成吡咯烷、哌嗪、吗啉、哌嗪或N-甲基哌嗪环;环X是如说明书中所定义的杂环;A是苯基或5-7C环烷基,或者是插入了一到两个基团的1-8C烷基;D是O或S;R.sup.3和R.sup.4是氢或说明书中描述的多种基团;以及其药学上可接受的酸加成盐。同时还描述了制造工艺和制药组合物。