Pyrimidone derivatives, which have histamine H2-antagonist activity, of structure
in which R is hydrogen, alkyl, alkanoyl or aroyl, X is hydrogen, chlorine, bromine or alkyl; Y is sulphur or methylene, n is 2 or 3, Z is hydrogen or lower alkyl, A is alkylene or -(CH2)pW(CH2)q - where W is oxygen or sulphur and p and q are such that their sum is from 1 to 4; B is hydrogen, methyl, cycioalkyl, or an optionally substituted phenyl or heteroaryl group
具有
组胺 H2-拮抗剂活性的
嘧啶酮衍
生物,其结构如下
其中 R 是氢、烷基、烷酰基或芳基;X 是氢、
氯、
溴或烷基;Y 是
硫或亚甲基;n 是 2 或 3;Z 是氢或低级烷基;A 是亚烷基或-(
CH2)pW( )q - 其中 W 是氧或
硫,p 和 q 之和为 1 至 4;B 是氢、甲基、环烷基或任选取代的苯基或杂芳基。