申请人:Nisshin Flour Milling Co., Ltd.
公开号:US04042617A1
公开(公告)日:1977-08-16
A process for preparing 3-methyl-3-(substituted aryl)-pyruvic acid compounds by treating a glycidic acid ester compound of the formula, ##STR1## wherein R.sup.1 is a 4-biphenylyl, 4-clyclohexylphenyl, 3-phenoxyphenyl, 4'-fluoro-4-biphenylyl, 2-fluoro-4-biphenylyl or 3-benzoylphenyl group and R.sup.2 is a lower alkyl group or its corresponding free acid with a Lewis acid to form a 2-hydroxy-3-(substituted aryl)-3-butenoic acid ester and treating the resulting ester in an alcohol with an alkali metal alcoholate to form the pyruvic acid compounds. If desired, the pyruvic acid compounds can then be saponified to compounds of the formula, ##STR2## wherein R.sup.1 is as previously defined and which compounds are useful as anti-inflammatory agents.
一种制备3-甲基-3-(取代芳基)丙酮酸化合物的方法,该方法涉及处理通式为##STR1##的甘油酸酯化合物,其中R1为4-联苯基、4-环己基苯基、3-苯氧基苯基、4'-氟-4-联苯基、2-氟-4-联苯基或3-苯甲酰苯基,R2为低级烷基或其相应的自由酸,通过使用路易斯酸形成2-羟基-3-(取代芳基)-3-丁烯酸酯,并将所得酯在醇中与碱金属醇盐反应以形成丙酮酸化合物。如果需要,这些丙酮酸化合物随后可以被皂化成通式为##STR2##的化合物,其中R1如前所述,这些化合物作为抗炎剂是有用的。