Process for preparing a 2-methyl-(substituted aryl)-pyruvic acid compound
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.
Novel platinum (II) complexes represented by general formula (I), wherein AB represents a bidentate diamine ligand, R1 and R2 independently represent a hydrogen atom or an alkyl group containing 1 to 8 carbon atoms, provided that R1 and R2 do not represent hydrogen atoms at the same time, Ar represents an aryl group, and n represents 0 or 1. The platinum (II) complexes have a strong growth inhibiting action on P-388 mouse leukemia cells and are used as novel substances having an oncostatic activity.