Compounds (1)
in which
R1 and R2 are C1-C4 alkyl or together with the nitrogen atom to which they are attached form a pyrrolidino or piperidino group;
Y is methylene or sulphur;
X is methylene or oxygen provided that X is methylene when Y is sulphur;
Z is hydrogen or C1-C4 alkyl; and
R5 is hydrogen, C1-4 alkyl or -A-B where
A is C1-C4 alkylene and
B is optionally substituted heteroaryl or phenyl are histamine H2-antagonists. Processes for their preparation and pharmaceutical compositions containing them are also described.
其中 R1 和 R2 是 C1-C4 烷基或与它们连接的
氮原子一起形成
吡咯烷基或
哌啶基;Y 是亚
甲基或
硫;X 是亚
甲基或
氧,条件是当 Y 是
硫时 X 是亚
甲基;Z 是
氢或 C1-C4 烷基;R5 是
氢、C1-4 烷基或 -A-B 其中 A 是 C1-C4 亚烷基,B 是任选取代的杂芳基或
苯基的化合物 (1) 是
组胺 H2-
拮抗剂。 还描述了它们的制备方法和含有它们的药物组合物。