申请人:Allen & Hanburys Ltd.
公开号:US04279819A1
公开(公告)日:1981-07-21
Compounds of the general formula I: ##STR1## and physiologically acceptable salts thereof and N-oxides and hydrates, in which R.sub.1 and R.sub.2 which may be the same or different represent hydrogen, lower alkyl, cycloalkyl, lower alkenyl, aralkyl or lower alkyl interrupted by an oxygen atom or a group ##STR2## in which R.sub.4 represents hydrogen or lower alkyl or R.sub.1 and R.sub.2 may, together with the nitrogen atom to which they are attached, form a heterocyclic ring which may contain other heteroatoms selected from O and ##STR3## R.sub.3 is hydrogen, lower alkyl, lower alkenyl or alkoxyalkyl; X is --CH.sub.2 --, O or S; Y represents .dbd.S, .dbd.O, .dbd.NR.sub.5 or .dbd.CHR.sub.6 ; Alk denotes a straight or branched alkylene chain of 1 to 6 carbon atoms; R.sub.5 is H, nitro, cyano, lower alkyl, aryl, alkylsulphonyl, or arylsulphonyl; R.sub.6 represents nitro, arylsulphonyl or alkylsulphonyl; m is an integer from 2 to 4; and n is 1 or 2; or when X.dbd.S, or --CH.sub.2 --, n is zero, 1 or 2. These compounds have H.sub.2 -antagonist activity. Intermediates in the production thereof are also provided.
通式I的化合物:##STR1##和其生理上可接受的盐和N-氧化物和水合物,其中R.sub.1和R.sub.2可以相同也可以不同,表示氢,低烷基,环烷基,低烯基,芳基烷基或被氧原子或基团##STR2##中断的低烷基,其中R.sub.4表示氢或低烷基,或R.sub.1和R.sub.2可以与它们附着的氮原子一起形成杂环,该杂环可以包含其他从O和##STR3##中选择的杂原子;R.sub.3是氢,低烷基,低烯基或烷氧基烷基;X是--CH.sub.2--,O或S;Y表示.dbd.S,.dbd.O,.dbd.NR.sub.5或.dbd.CHR.sub.6;Alk表示1到6个碳原子的直链或支链烷基链;R.sub.5是H,硝基,氰基,低烷基,芳基磺酰基或烷基磺酰基;R.sub.6表示硝基,芳基磺酰基或烷基磺酰基;m是2到4的整数;n是1或2;或当X.dbd.S或--CH.sub.2--时,n为零,1或2。这些化合物具有H.sub.2-拮抗剂活性。还提供了其生产的中间体。