Compounds of the general formula: ##STR1## and physiologically acceptable salts, and hydrates, N-oxides and bioprecursors of such compounds and such salts in which R.sub.1 and R.sub.2, which may be the same or different, represent hydrogen or lower alkyl, cycloalkyl, aralkyl or lower alkenyl groups, or lower alkyl groups 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 the hetero functions --O-- and ##STR3## R.sub.3 represents hydrogen, lower alkyl, alkenyl or alkoxyalkyl; X represents --O--, --S-- or --CH.sub.2 -- or ##STR4## where R.sub.5 is hydrogen or lower alkyl; Y represents .dbd.S, .dbd.O, .dbd.NR.sub.6 or .dbd.CHR.sub.7 ; in which R.sub.6 represents hydrogen, nitro, cyano, lower alkyl, aryl, arylsulphonyl or lower alkylsulphonyl; R.sub.7 represents nitro, lower alkylsulphonyl or arylsulphonyl; m is an integer from 2 to 4 inclusive; n is zero, 1 or 2; and Alk denotes a straight or branched alkylene chain of 1 to 6 carbon atoms. The compounds have therapeutic activity.
一般式为##STR1##及其生理上可接受的盐、
水合物、N-氧化物和
生物前体化合物的化合物以及这些盐中的R.sub.1和R.sub.2,它们可以相同或不同,表示氢或较低的烷基、环烷基、芳基烷基或较低的烯基基团,或被氧原子或基团##STR2##中断的较低烷基基团,其中R.sub.4表示氢或较低烷基;或R.sub.1和R.sub.2可以与它们连接的氮原子一起形成一个杂环环,该杂环环可以包含杂原子功能--O--和##STR3##其中R.sub.3表示氢、较低烷基、烯基或烷氧基烷基; X表示--O--、--S--或--CH.sub.2--或##STR4##其中R.sub.5为氢或较低烷基; Y表示.dbd.S、.dbd.O、.dbd.NR.sub.6或.dbd.CHR.sub.7;其中R.sub.6表示氢、硝基、
氰基、较低烷基、芳基、芳基磺酰或较低烷基磺酰; R.sub.7表示硝基、较低烷基磺酰或芳基磺酰; m为2至4的整数,n为零、1或2; Alk表示1至6个碳原子的直链或支链烷基链。这些化合物具有治疗活性。