synthesized optically-enriched reference compounds with isolated diols and hydroxyesters, revealed the (R)-configuration for the free diols in cvs. Renao, Bedan, Peau de Chien and Noel des Champs and the (R)-configuration for the bound diols in cvs Bedan, Peau de Chien and Noel des Champs, exhibiting enantiomeric excesses (ees) greater than 99%. (R)-hydroxyesters (ee > 99%) were detected in cvs. Noel des Champs
在五个苹果品种(Renao;Bedan;Peau de Chien;Noel des Champs;Red Delicious)通过液-液萃取和酶水解获得的提取物中,游离和糖苷键合的辛烷-1,3-二醇和 5( Z)-octene-1,3-diol,以及 3-羟基辛酸乙酯和 5(Z)-3-羟基辛酸乙酯,通过多维气相色谱 (MDGC) 进行分析,将极性非手性柱 (DB-Wax) 与手性主柱(2,3-二-O-乙酰基-6-O-叔丁基二甲基甲硅烷基-β-环糊精/OV 1701)。比较合成的光学富集参考化合物与分离的二醇和羟基酯的保留时间,揭示了 cvs 中游离二醇的 (R)-构型。Renao、Bedan、Peau de Chien 和 Noel des Champs 以及 cvs Bedan、Peau de Chien 和 Noel des Champs 中结合二醇的 (R)-构型,表现出大于 99%
A simple preparation of R or S glycidic esters; Application to the synthesis of enantiomerically pure α-hydroxyesters.
作者:Marc Larchevêque、Yves Petit
DOI:10.1016/s0040-4039(00)96028-3
日期:1987.1
The simple preparation of enantiomerically pure α-hydroxyesters by the régioselective reaction of lithio and magnesiocuprates with glycidicesters or ′ readily available from serine is described.