The invention provides compounds of formula (I):-
and pharmaceutically acceptable acid addition salts thereof, which are useful as histamine H2-antagonists. In formula (I) Z is sulphur or methylene and A is a covalent bond or methylene or ethane-1,2-diyl optionally substituted with one C1-4 alkyl group and a second C1-4 alkyl group or a phenyl C1-4 alkyl group.
A particular compound of formula (I) is 2-[2- (2- guanidino-4-thiazolyl methylthio)ethylamino-]-3-nitro-1,4,5,6-tetrahydropyridine.
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。
及其药学上可接受的酸加成盐,可用作
组胺 H2-拮抗剂。在式 (I) 中,Z 是
硫或亚甲基,A 是共价键或亚甲基或任选被一个 C1-4 烷基和第二个 C1-4 烷基或苯基 C1-4 烷基取代的
乙烷-1,2-二基。
一种特殊的式 (I) 化合物是 2-[2-(2-
胍基-4-
噻唑基甲
硫基)乙
氨基-]-
3-硝基-
1,4,5,6-四氢吡啶。