申请人:Sankyo Company Limited
公开号:US04161538A1
公开(公告)日:1979-07-17
4-(2-Oxo- or hydroxyimino-cycloalkan-1-ylmethyl)phenylacetic acid derivative and nontoxic pharmaceutically acceptable salt thereof are useful as an anti-inflammatory agent. The above 2-oxo-compound may be prepared by (a) hydrolyzing and decarboxylating 4-(1-alkoxycarbonyl-2-oxocycloalkan-1-ylmethyl)phenylacetic acid ester derivative or (b) reacting p-halomethylphenylacetic acid ester derivative with an enamine of cycloalkanone and hydrolyzing the resulting product. And further, the above 2-hydroxyimino-compound may be prepared by (c) reacting 4-(2-oxocycloalkan-1-ylmethyl)phenylacetic acid derivative (the product of process (a) or (b)) with hydroxylamine or (d) reacting a dilithium salt of cycloalkanone oxime with p-halomethyl- or p-sulfonyloxymethyl-phenylacetic acid ester derivative and hydrolyzing the resulting product.
4-(2-氧代或羟基亚胺基环烷基甲基)苯乙酸衍生物及其无毒药用盐可用作抗炎药剂。上述2-氧代化合物可以通过以下方法制备:(a)水解和脱羧4-(1-烷氧羰基-2-氧代环烷基甲基)苯乙酸酯衍生物,或(b)将对卤代甲基苯乙酸酯衍生物与环烷酮的烯胺反应,然后水解生成的产物。此外,上述2-羟基亚胺化合物可以通过以下方法制备:(c)将4-(2-氧代环烷基甲基)苯乙酸衍生物(过程(a)或(b)的产物)与羟胺反应,或(d)将环烷酮羟胺二锂盐与对卤代甲基或对磺酰氧基甲基苯乙酸酯衍生物反应,然后水解生成的产物。