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.
该发明涉及胍基衍生物,它们是组胺H-2拮抗剂,能抑制胃酸分泌。根据该发明,提供了一种符合以下式I的胍基衍生物:- ##STR1## 其中R.sup.1和R.sup.2,相同或不同,是氢或1-10碳原子的烷基,3-8碳原子的环烷基或4-14碳原子的环烷基烷基,每个烷基、环烷基或环烷基烷基可选地携带一个或多个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是氢而R.sup.1是R.sup.5--E--W,其中W是可选地由1或2个1-4碳原子的烷基取代的2-6碳原子的亚烷基,E是O、S或NR.sup.6,其中R.sup.6是H或1-6碳原子的烷基,R.sup.5是H或1-6碳原子的烷基,可选地由1或2个1-4碳原子的烷基取代,或者R.sup.5和R.sup.6连接形成吡咯烷、哌啶、吗啉、哌嗪或N-甲基哌嗪环;环X是规范中定义的杂环;A是苯基或5-7碳原子的环烷基,或者可选地插入一到两个基团的1-8碳原子的亚烷基;D是O或S;R.sup.3和R.sup.4是氢或规范中描述的各种基团;以及其药用可接受的酸加盐。还描述了制造工艺和药物组合物。