Compounds of the formula (I)
or pharmaceutically acceptable salts are described, wherein R1 and R2 are independently hydrogen or C1-6alkyl, or R' and R2 together represent -(CH2)q- wherein q is 4 to 7, to torm together with the nitrogen atom to which they are attached, a 5-8 membered saturated ring, optionally substituted by C1-6alkyl; X is -CH2- or sulphur; n is 2 or 3, or if X is -CH,- n can also be 1; p is 1 or 2; and R' is hydrogen, C1-6alkyl, C3-6 alkenyl or C3-6alkynyl (wherein the unsaturated bond is not adjacent to the -NH- moiety).
The compounds are histamine H2-receptor antagonists and are useful in treating diseases mediated via histamine H2-receptors. Processes for their preparation, pharmaceutical compositions containing them and methods of use are described.
描述了式 (I) 的化合物
或药学上可接受的盐,其中 R1 和 R2 独立地为氢或 C1-6 烷基,或 R' 和 R2 共同代表-(
CH2)q-,其中 q 为 4 至 7,与所连接的氮原子一起形成 5-8 个成员的饱和环,可选地被 C1-6 烷基取代;X是- -或
硫;n是2或3,如果X是-CH,-n也可以是1;p是1或2;R'是氢、C1-6烷基、C3-6烯基或C3-6炔基(其中不饱和键不与-NH-分子相邻)。
这些化合物是
组胺 H2 受体拮抗剂,可用于治疗通过
组胺 H2 受体介导的疾病。本文介绍了这些化合物的制备工艺、含有这些化合物的药物组合物和使用方法。