Regio - and enantioselective bioreduction of ethyl 2,4-dioxoalkanoates and γ-Keto-α-enamino esters with fermenting baker's yeast
作者:Pier G. Baraldi、Stefano Manfredini、Gian P. Pollini、Romeo Romagnoli、Daniele Simoni、Vinicio Zanirato
DOI:10.1016/s0040-4039(00)78883-6
日期:1992.5
2,4-Dioxoalkanoates 1a-d and the parent compounds gamma-keto-alpha-enamino esters 2a-d are regioselectively reduced by baker's yeast to (R)-alpha-hydroxy-gamma-ketoesters 4a-d in moderate to good chemical yield and appreciable enantioselectivity. Pig liver esterase enantioselective hydrolysis of the acetyl derivatives 3a-d, easily obtained by treatment of racemic alpha-hydroxy-gamma-keto esters 4a-d, produced the optically active (S) 4a-d in good chemical (60-92%) and optical (53-92%) yield.