Enzymatic diastereo- and enantioselective synthesis of α-alkyl-α,β-dihydroxyketones
作者:Pier Paolo Giovannini、Giancarlo Fantin、Alessandro Massi、Valentina Venturi、Paola Pedrini
DOI:10.1039/c1ob05928a
日期:——
reactions of α-diketones catalyzed by acetylacetoin synthase (AAS) produce a set of α-alkyl-α-hydroxy-β-diketones (30–60%, ee 67–90%), which in turn are reduced regio-, diastereo-, and enantioselectively to the corresponding chiral α-alkyl-α,β-dihydroxyketones (60–70%, ee >95%) using acetylacetoin reductase (AAR) as catalyst. Both enzymes are obtained from Bacillus licheniformis and used in a crude form. The