专利号:US-3890321-A 优先权日:1971-09-20 标题 :6-aryl-5-ethyl-pyrimidin-4-ol compounds useful as intermediates and bronchodilators 发明人:DEANGELIS GERALD GEORGE; HESS HANS-JURGEN ERNST 权利人:PFIZER 摘要:4-Hydroxy-5-ethyl-6-arylpyrimidines are useful intermediates leading to the synthesis of 4-amino-5-ethyl-6-arylpyrimidines, inhibitors of platelet aggregation and bronchodilators. 4Hydroxy-5-ethyl-6-phenylpyrimidine is also useful as a bronchodilator.