Compounds of the formula (I):
and their salts are histamine H2-antagonists, wherein: R, and R2 are hydrogen or various substituted alkyl groups; n is 1 to 6; Z is 2,5-furanyl, 2,5-thienyl, 2,4-pyridyl (wherein R1R2N(CH2)n is at position 4) or 1,3 or 1,4-phenylene; m is zero or one; Y is oxygen, sulphur or methylene; p is 2 to 4; R4 and R5 are hydrogen, optionally substituted alkyl or phenyl, and R3 is hydrogen or optionally substituted alkyl.
Pharmaceutical compositions containing them are described as are processes for their preparation and intermediates therefor.
式(I)化合物及其盐类是
组胺 H2-拮抗剂,其中:R 和 R2 是氢或各种取代的烷基;n 是 1 至 6;Z 是 2,5-
呋喃基、2,5-
噻吩基、2,4-
吡啶基(其中 R1R2N(
CH2)n 位于第 4 位)或 1,3 或 1,4-亚苯基;m 是 0 或 1;Y 是氧、
硫或亚甲基;p 是 2 至 4;R4 和 R5 是氢、任选取代的烷基或苯基,R3 是氢或任选取代的烷基。 描述了含有这些化合物的药物组合物及其制备工艺和中间体。