Compounds of the following formula are described:
in which n is 0, 1 or 2, R1 is C1-4alkyl, C1-4alkoxy, C1-4alkylthio, C1-4 alkylsulphonyl, trifluoromethyl, halo or nitro, and R2 and R3 are each independently hydrogen or C1-4 alkyl, and salts thereof. The compounds are useful in the treatment of immediate hypersensitivity conditions and are prepared by reaction of the appropriate formylquinolone with malonic acid, ylid or phosphonate.
描述了下式化合物:
其中 n 为 0、1 或 2,R1 为 C1-4 烷基、C1-4 烷氧基、C1-4 烷
硫基、C1-4 烷磺酰基、三
氟甲基、卤代或硝基,R2 和 R3 各自独立地为氢或 C1-4 烷基,以及它们的盐。这些化合物可用于治疗即刻过敏症,其制备方法是将适当的甲酰基
喹啉酮与
丙二酸、酰基或
膦酸反应。