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 is --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.
一般式为I的化合物:##
STR1 ##及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可能相同或不同,代表
氢,低烷基,
环烷基,低
烯基,芳基烷基或被
氧原子或群体##
STR2 ##中断的低烷基,其中R.sub.4代表
氢或低烷基,或R.sub.1和R.sub.2可以与它们附着的
氮原子一起形成可能包含其他杂原子(如O和##
STR3 ##)的杂环,R.sub.3为
氢,低烷基,低
烯基或烷
氧基烷基;X为--CH.sub.2 --,O--或--S--;Y代表.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为H,硝基,
氰基,低烷基,芳基烷基,烷基磺酰基或芳基磺酰基;R.sub.6代表硝基,芳基磺酰基或烷基磺酰基;m为2至4的整数;n为1或2;或当X为--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。