申请人:Imperial Chemical Industries Limited
公开号:US04242351A1
公开(公告)日:1980-12-30
The invention relates to oxadiazole derivatives which are histamine H-2 antagonists and which inhibit the secretion of gastric acid, to methods for their manufacture and to pharmaceutical compositions containing them. The oxadiazole derivatives are of the formula: ##STR1## in which Y is O, S, CH.sub.2 or a direct bond; m is 0 to 4 and n is 1 to 4, provided that when Y is S or O m is 1 to 4 and when Y is O n is 2 to 4; A is a 3,4-dioxocyclobuten-1,2-diyl radical or C=Z in which Z is O, S, NCN, NNO.sub.2, CHNO.sub.2, NCONH.sub.2, C(CN).sub.2, NCOR.sup.1, NCO.sub.2 R.sup.1, NSO.sub.2 R.sup.1 or NR.sup.2 in which R.sup.1 is alkyl or aryl and R.sup.2 is H or alkyl; B is alkoxy or alkylthio or NHR.sup.3 in which R.sup.3 is H or alkyl: and the salts thereof.
该发明涉及噁二唑衍生物,其为组胺H-2拮抗剂,抑制胃酸分泌,以及其制备方法和含有它们的药物组合物。噁二唑衍生物的化学式为:##STR1## 其中Y为O、S、CH.sub.2或直接键;m为0至4,n为1至4,但当Y为S或O时,m为1至4,当Y为O时,n为2至4;A为3,4-二氧杂环丁-1,2-二基基团或C=Z,其中Z为O、S、NCN、NNO.sub.2、CHNO.sub.2、NCONH.sub.2、C(CN).sub.2、NCOR.sup.1、NCO.sub.2 R.sup.1、NSO.sub.2 R.sup.1或NR.sup.2,其中R.sup.1为烷基或芳基,R.sup.2为H或烷基;B为烷氧基、烷基硫基或NHR.sup.3,其中R.sup.3为H或烷基;及其盐。