Asymmetric synthesis of syn and anti 1,2-diols from diethyl oxalate using the stereoselective sulfoxide directed reduction of 1,2-diketone derivatives
作者:Guy Solladié、Gilles Hanquet、Irene Izzo、Robyn Crumbie
DOI:10.1016/s0040-4039(99)00368-8
日期:1999.4
A new chiral Wittig reagent, a β-keto-γ-(S)-hydroxy-δ-(R)-p-tolylsulfinyl phosphonate, readily made from ethyl oxalate and stereoselective sulfoxide mediated reduction of the resulting β-ketosulfoxide, was used to prepare enantiomerically pure syn and anti 1,2-diols. This method was applied to the enantioselective synthesis of two acetogenin derivatives, (−)-(R,R)-muricatacin and its epimer (−)-(R
一种新的手性维蒂希试剂,即β-酮基-γ-(S)-羟基-δ- (R)-对甲苯基亚砜基膦酸酯,很容易由草酸乙酯和立体选择性亚砜介导还原生成的β-酮亚砜,用于制备对映体纯的顺式和反式1,2-二醇。该方法应用于两种产乙酸素衍生物(-)-(R,R)-穆里卡他星及其差向异构体(-)-(R,S)-表-穆里卡他星的对映选择性合成。