The ene-reductases mediated bioreduction of a selection of open-chain α-alkyl-β-aryl enones afforded the corresponding saturated α-chiral ketones in high yield and optical purity in several cases. The stereo-electronic requirements of the reaction have been investigated, considering the nature and location of substituents on the aromatic ring as well as the steric hindrance at the α-position and adjacent
Stereochemical Control in Microbial Reduction. XXVIII. Asymmetric Reduction of<i>α</i>,<i>β</i>-Unsaturated Ketones with Bakers’ Yeast
作者:Yasushi Kawai、Kentarou Saitou、Kouichi Hida、Duc Hai Dao、Atsuyoshi Ohno
DOI:10.1246/bcsj.69.2633
日期:1996.9
Bakers’ yeastreduction of α,β-unsaturated ketones affords optically active saturated ketones contaminated by allylic and saturated alcohols as minor components. Stereoselectivity of the reduction of carbon–carbon double bond strongly depends on the structure of β-aryl substituent. The bakers’ yeastreduction of β-phenyl enones gives saturated ketones in moderate stereoselectivity. Stereoselectivity