Compounds of the formula (I):
and salts thereof are described, wherein R1 and R2 are a variety of substituents or are joined to form a ring; n is 1 to 6; Z is 1,3-phenylene, 1,4-phenylene, 2,4-pyridyl (wherein the R1R2N(CH2)n group is in the 4-position); m is zero or one; Y is oxygen, sulphur or methylene; p is two, three or four; and R3 is hydrogen, C1-6alkyl or aryl(C1-6)alkyl and R4 is hydrogen or Cl.6alkyl; or R3 and R4 together with the carbon atoms to which they are attached form a benzene ring optionally substituted by Cl-6alkyl. Processes for their preparation and intermediates therefor are described, as are pharmaceutical compositions containing them and their use as histamine H2-antagonists.
描述了式(I)化合物及其盐:
及其盐,其中 R1 和 R2 是各种取代基,或连接形成环;n 是 1 至 6;Z 是
1,3-亚苯基、1,4-亚苯基、2,4-
吡啶基(其中 R1R2N(
CH2)n 基团位于 4 位);m 是 0 或 1;Y 是氧、
硫或亚甲基;p 是 2、3 或 4;R3 是氢、C1-6 烷基或芳基(C1-6)烷基,R4 是氢或 Cl.6 烷基。烷基;或 R3 和 R4 与它们所连接的碳原子一起形成一个任选被 Cl-6 烷基取代的苯环。本文介绍了它们的制备工艺和中间体,以及含有它们的药物组合物和它们作为
组胺 H2-拮抗剂的用途。