Novel antiallergic agents are described which are carboxy-substituted 3,5-di(tertiary-butyl)-4-hydroxybenzophenones. Pharmaceutical compositions containing and pharmacological methods for using such compounds are also described, as are synthetic intermediates for preparing such compounds.
                            本发明涉及一种羧基取代的3,5-二(叔丁基)-
4-羟基苯甲
酮类新型抗过敏剂。本发明还描述了含有该化合物的制药组合物和使用该化合物的药理学方法,以及制备该化合物的合成中间体。