The compounds are substituted 2-amino-4-pyrimidones with a 5-(hydroxypyridylalkyl) substituent which are histamine H.sub.2 -antagonists. Two specific compounds are 2-[2-(3-bromo-2-pyridylmethylthio)ethylamino]-5-(2-hydroxy-4-pyridylmethyl )-4-pyrimidone and 2-[4-(3-methoxy-2-pyridyl)butylamino]-5-(2-hydroxy-4-pyridylmethyl)-4-pyri midone.
这些化合物是2-
氨基-4-
嘧啶酮衍
生物,带有5-(
羟基吡啶基烷基)取代基,它们是
组胺H.sub.2-拮抗剂。两种特定的化合物是2-[2-(3-溴-2-
吡啶甲
硫基)乙基
氨基]-5-(2-羟基-4-
吡啶甲基)-4-
嘧啶酮和2-[4-(3-甲氧基-2-
吡啶基)丁基
氨基]-5-(2-羟基-4-
吡啶甲基)-4-
嘧啶酮。