There are disclosed 7-substituted-9-oxoxanthene-2-carboxaldehydes of the formula: ##STR1## in which R is lower alkoxy or hydroxy. These compounds are indicated in the management of allergic manifestations such as, for example, bronchial asthma or hay fever.
公开了式为:##STR1##的7-取代-9-氧代
蒽醛,其中R为低
碳酸酯基或羟基。这些化合物适用于治疗过敏反应,例如支气管哮喘或花粉热等症状。