Absolute configurations of the (–)-erythro and (–)-threo-2,3-dihydroxybutyric acids

Abstract

The absolute configurations of (–)-erythro-2,3-dihydroxybutyric acid and (–)-threo-2,3-dihydroxybutyric acid have been determined by optical rotatory dispersion and found to be 2(R), 3(R) for the erythro acid and 2(S), 3(R) for the threo acid.