A terephthalic acid monoamide derivative of the formula: ##STR1## (wherein R is a straight- or branched-chain lower alkyl group; R' and R" may be the same or different, and represent a hydrogen atom, or a straight- or branched-chain lower alkyl group) or pharmaceutically acceptable salts thereof are disclosed. A process for preparing such terephthalic acid monoamide derivative or its salts, as well as an anti-allergic agent containing such derivative or its salts as an effective ingredient are also disclosed.
本发明公开了一种苯二
甲酸单酰胺衍
生物,其
化学式为:##STR1## (其中R是直链或支链低碳基;R'和R"可以相同或不同,表示氢原子或直链或支链低碳基),或其药学上可接受的盐。还公开了制备此类苯二
甲酸单酰胺衍
生物或其盐的过程,以及含有此类衍
生物或其盐作为有效成分的抗过敏剂。