Baker's yeast mediated reduction of dihydroxyacetone derivatives
摘要:
Several monoprotected dihydroxyacetone derivatives 4a-d and their acetates 5a-d were prepared and subjected to biotransformation with baker's yeast. The simple chemical modification of the substrates (i.e. transforming the relatively small hydrophilic hydroxymethyl group into a larger hydrophobic acetoxymethyl moiety) inverted the sense of enantiotope selectivity of these reductions yielding optically active diols 6a-d, or their enantiomeric acetates (7a-d) and diols (ent-6a-d), respectively. (C) 1999 Elsevier Science Ltd. All rights reserved.