The stereocontrolled formation of 1,2,3-triols by yeast-mediated transformation of α-keto epoxides
Abstract
3-Phenyl-2,3-epoxy ketones are transformed using baker's yeast into the corresponding 1,2,3-triols as one pure diastereoisomer (S,S,Sand R,R,R) formed by syn ring opening of the epoxide after first reduction of the carbonyl group; the reaction results in the epoxy-oxygen becoming the mid OH group of the triol, implicating enzyme attack at the C-3 in the ring-opening reaction.