申请人:Toyama Chemical Company, Ltd.
公开号:US04954518A1
公开(公告)日:1990-09-04
This invention relates to a 4H-1-benzopyran-4-one derivative represented by the formula: ##STR1## or a salt thereof, a process for producing the same and a pharmaceutical composition comprising the same as active ingredient.
这项发明涉及一种由以下公式表示的4H-1-苯并吡喃-4-酮衍生物:##STR1##或其盐,以及制备该衍生物的方法和包含其作为活性成分的药物组合物。