Pyrimidone derivatives

摘要

This invention relates to 2-amino-4-pyrimidone derivatives, in which the amino group is substituted by a methylthioethyl, butyl or oxypropyl group bearing a terminal 4-dialkylaminomethyl-2-pyridyl group. The compounds have histamine H2-antagonist activity. A specific compound of this invention is 2-[2-(4-dimethylaminomethyl-2-pyridylmethylthio)ethylamino]-5-(6-methy l-3-pyridylmethyl)-4-pyrimidone.