The invention provides compounds of the formula (I):
and their pharmaceutically acceptable acid addition salts a process for their preparation and their use as histamine H2- antagonists. In formula (I) W is a 2-furanyl or 2-thienyl group optionally substituted in the 5-position with a group R1R2N/CH2)m-; a phenyl group substituted in the 3- or 4-position with a group R1R2N(CH2)m-; a 4-imidazolyl group optionally substituted in the 5-position with methyl or bromine; a 2-pyridyl group optionally substituted in the 3-position with C1-4 alkyl, Ci-4 alkoxy, halogen, amino or hydroxy; a 2-thiazolyl group or a 2-guanidino-4-thiezolyl group; X is methylene or sulphur and Y is methylene or, provided X is methylene and W is a substituted phenyl group, oxygen; Z is hydrogen or C1-4 alkyl; and B is a 2-furanyl or 2-thienyl group substituted in the 5-position by a group R1R2N/CH2)m-; a phenyl group substituted in the 3- or 4-position by a group R1R2N(CH2)m-; or a 3-pyridyl group substituted in position 5 or 6 or a 4-pyridyl group substituted in position 2 by a group R1R2N(CH2)m; R1 and R2 are Ci-4 alkyl or together with the nitrogen atom to which they are attached form a pyrrolidino, piperidino or morpholino group; m is 1 to 4.
本发明提供了式 (I) 的化合物:
及其药学上可接受的酸加成盐的制备方法,以及它们作为
组胺 H2- 拮抗剂的用途。在式 (I) 中,W 是在 5 位上任选被基团 R1R2N/
CH2)m- 取代的 2-
呋喃基或 2-
噻吩基;在 3 或 4 位上任选被基团 R1R2N( )m- 取代的苯基;在 5 位上任选被甲基或
溴取代的 4-
咪唑基;可选择在 3 位被 C1-4 烷基、Ci-4 烷氧基、卤素、
氨基或羟基取代的 2-
吡啶基; 2-
噻唑基或 2-
胍基-4-
噻唑基; X 是亚甲基或
硫,Y 是亚甲基或(如果 X 是亚甲基且 W 是取代的苯基)氧;Z 是氢或 C1-4 烷基;以及 B 是在 5 位被基团 R1R2N/ )m- 取代的 2-
呋喃基或 2-
噻吩基;在 3 位或 4 位被基团 R1R2N( )m- 取代的苯基;或在 5 或 6 位被基团 R1R2N( )m- 取代的 3-
吡啶基,或在 2 位被基团 R1R2N( )m- 取代的 4-
吡啶基; R1 和 R2 为 Ci-4 烷基,或与所连接的氮原子一起形成
吡咯烷基、
哌啶基或吗啉基;m 为 1 至 4。