申请人:The Boots Company PLC
公开号:US04767769A1
公开(公告)日:1988-08-30
Compounds of formula I ##STR1## in which R.sub.1 and R.sub.2, which may be the same or different, are hydrogen, a C.sub.1 to C.sub.3 alkyl group or R.sub.1 and R.sub.2 together with the nitrogen to which they are attached form an optionally substituted heterocyclic ring; R.sub.3 and R.sub.4, which may be the same or different are hydrogen, a C.sub.1 to C.sub.3 alkyl or an optionally substituted C.sub.3 to C.sub.6 cycloalkyl group, or R.sub.3 and R.sub.4 together with the nitrogen to which they are attached form an optionally substituted heterocyclic ring; m is 0, 1 or 2; p is 0, 1 or 2; E is an alkylene group connected to or interrupted by an oxygen or a sulphur atom; J is hydrogen or a substituent group; and their pharmaceutically acceptable salts have utility as histamine H.sub.2 -receptor antagonists.
化合物的结构式为I,其中R.sub.1和R.sub.2,可以相同也可以不同,是氢、C.sub.1到C.sub.3烷基或者R.sub.1和R.sub.2连同它们连接的氮原子形成一个可选择取代的杂环环;R.sub.3和R.sub.4,可以相同也可以不同,是氢、C.sub.1到C.sub.3烷基或者一个可选择取代的C.sub.3到C.sub.6环烷基,或者R.sub.3和R.sub.4连同它们连接的氮原子形成一个可选择取代的杂环环;m为0、1或2;p为0、1或2;E是连接到或被氧或硫原子中断的烷基基团;J是氢或取代基团;它们的药学上可接受的盐可用作组胺H.sub.2-受体拮抗剂。