Selective synthesis of 1-, and 3-carbomethoxy 2-tetralol stereoisomers by microbial reduction of the corresponding tetralones
作者:Cécile Abalain、Didier Buisson、Robert Azerad
DOI:10.1016/0957-4166(96)00389-8
日期:1996.10
The microbial reduction of beta-ketoesters derived from 2-tetralone has been shown to produce good yields of 2-hydroxy-1-carboxy- or 3-hydroxy-2-carboxyesters. Baker's yeast invariably affords a high enantiomeric purity cis-hydroxyester, while fungi strains may produce, sometimes exclusively, cis- or trans- complementary stereochemistries. From a general survey of the baker's yeast reduction of cyclic beta-ketoesters, a working model for predicting enantio- and diastereoselectivities of the reduction is proposed and discussed. Copyright (C) 1996 Elsevier Science Ltd
Conversion of isoxazolines to β-hydroxy esters. Synthesis of 2-deoxy-D-ribose
作者:P. Caldirola、M. Ciancaglione、M. De Amici、C. De Micheli
DOI:10.1016/s0040-4039(00)85028-5
日期:——
A simple and effficient preparation of β-hydroxy esters with a well-defined stereochemistry has been developed using 3-bromoisoxazolines as key-intermidiates. A synthesis of 2-decxy-D-ribose is also reported