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 4-15C 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
抑制剂组,为
组胺H-2受体拮抗剂的
胍衍
生物。根据本发明,提供了一种公式I的
胍衍
生物:##STR1## 其中R.sup.1和R.sup.2,相同或不同,为氢或1-10C烷基,3-8C环烷基或4-15C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中的一个被卤素取代,或者R.sup.2为氢,R.sup.1为R.sup.5 --E--W,其中W为2-6C烷基,可选地被1或2个1-4C烷基取代,E为O、S或NR.sup.6,其中R.sup.6为H或1-6C烷基,R.sup.5为H或1-6C烷基,可选地被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、
哌嗪烷、吗啉、
哌嗪或
N-甲基哌嗪环;环X是如规范中所定义的杂环;A是苯撑或5-7C环烷撑,或者是1-8C烷基,其中可选择插入一或两个基团;D是O或S;以及其药学上可接受的酸加成盐。还描述了制造工艺和制药组合物。