There are described certain mono-chromone-2-carboxylic acids of formula, ##SPC1## Having one substituent in the 5 or 6 position or having 2 or more substituents in the 5,6,7 or 8 positions. There are also described processes for making the compounds and pharmacetuical compositions, for the treatment of asthma, containing the compounds.
描述了一些具有以下公式的单
色酮-2-
羧酸,##
SPC1## 在5或6位置有一个取代基或在5,6,7或8位置有2个或更多的取代基。还描述了制备这些化合物的过程和含有这些化合物的用于治疗哮喘的药物组合物。