申请人:Warner-Lambert Company
公开号:US04033845A1
公开(公告)日:1977-07-05
The present invention relates to [2-(4-oxo-4H-1-benzopyran-2-yl)ethenyl]benzonitrile and benzoic acids having the following structural formula: ##STR1## in which R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 are hydrogen, lower alkyl, halogen or lower alkoxy, and A is COOH or CN. The compounds of this invention exhibit anti-allergy properties and are indicated in the management of allergic manifestations such as bronchial asthma.
本发明涉及具有以下结构式的[2-(4-氧代-4H-1-苯并吡喃-2-基)乙烯基]苯甲腈和苯甲酸:##STR1##其中R.sub.1、R.sub.2、R.sub.3、R.sub.4、R.sub.5、R.sub.6、R.sub.7和R.sub.8为氢、较低烷基、卤素或较低烷氧基,A为COOH或CN。本发明的化合物具有抗过敏性能,并适用于治疗过敏表现,如支气管哮喘的管理。