Triazole Antifungals. III. Stereocontrolled Synthesis of an Optically Active Triazolylmethyloxirane Precursor to Antifungal Oxazolidine Derivatives

Abstract

Stereocontrolled syntheses of an optically active triazolymethyloxirane 2, an important intermediate for the preparation of anifungal oxazolidine compounds 1, was achieved by two methods using L-lactic acid as a starting material. The key intermediate ketone 6 used in the procedures also served for the synthesis of the enantiomer of 2 and the corresponding diastereomeric epoxide.