Compounds of the formula (I):
and their salts are histamine H2-antagonists, wherein: R° is 2- guanidinothiazol-4-yl or a group R1R2N(CH2)nZ- wherein R1 and R2 are hydrogen or various substituted alkyl groups or are joined together to form a ring; n ist 1 to 6; Z is 2,5-furanyl, 2,5-thienyl, 2,4-pyridyl (wherein R1R2N(CH2)n- is at position 4), 2,4-thiazolyl (wherein R1R2N(CH2)n- is at position 2) or 1,3- or 1,4-phenylene; m is zero or one; Y is a bond, oxygen, sulphur or methylene; p is 2 to 4; q is zero or one; R3 is hydrogen or C1-6alkyl; and R4 is hydrogen or C1-6alkanoyl.
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° 是 2-
胍基
噻唑-4-基或基团 R1R2N(
CH2)nZ- 其中 R1 和 R2 是氢或各种取代的烷基或连接在一起形成环;nt 是 1 至 6;Z是2,5-
呋喃基、2,5-
噻吩基、2,4-
吡啶基(其中R1R2N( )n-位于第4位)、2,4-
噻唑基(其中R1R2N( )n-位于第2位)或1,3-或1,4-亚苯基;m是0或1;Y是键、氧、
硫或亚甲基;p是2至4;q是0或1;R3是氢或C1-6烷基;R4是氢或C1-6烷酰基。
此外,还介绍了含有它们的药物组合物及其制备工艺和中间体。