申请人:Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt.
公开号:US04321377A1
公开(公告)日:1982-03-23
Nitrogen bridgehead compounds (pyrido-[1,2-a]-pyrimidine derivatives) which are useful intermediates in the making of known compounds of this class and which themselves possess PG-antagonist, analgesic, antiartheriosclerotic, tranquilizing and like pharmaceutical activity.
Nitrogen bridgehead compounds having anti-allergic effect
申请人:Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt.
公开号:US04234586A1
公开(公告)日:1980-11-18
Antiallergic and particularly antiasthmatic compounds of the formula: ##STR1## of which 9-phenylhydrazono-6-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido(1,2-a)pyrimi dine-3-carboxylic acid is an especially significant example.