Certain fluorenone and anthraquinone compounds, each of which is 2-substituted by a carboxyl group or a salt, ester or optionally substituted amide thereof and each of which is optionally substituted in the 5,6-, 7- or 8- position, by a second carboxyl group, salt, ester or optionally substituted amide thereof, the substitutent in the 5,6-7- or 8- position of the fluorenone compounds, also being selected from cyano, halogen, nitro, alkyl, alkoxy and acyl, are useful for the relief or prophylaxis of allergic conditions.
某些
芴酮和
蒽醌化合物,每个分子中都有一个羧基或盐、酯或可选取代酰胺基的2-取代基团,并且每个分子在5,6-、7-或8-位上可选地取代一个第二个羧基、盐、酯或可选取代酰胺基。
芴酮化合物中5,6-7-或8-位上的取代基团也可以是
氰基、卤素、硝基、烷基、烷氧基和酰基,这些化合物对缓解或预防过敏症状有用。