Stereoselective synthesis of α-hydroxy-β-amino acids using D-glyceraldehyde as the homochiral source
摘要:
A systematic study of the diastereoselective addition of methyl organometallic compounds to the benzyl imine derived from conveniently protected D-glyceraldehyde in order to develop a new approach to enantiomerically pure alpha-hydroxy-beta-amino acids is reported. Methylmagnesium bromide addition afforded the corresponding adduct, which can be further elaborated to give (2S, 3R) 3-amino-2-hydroxybutanoic acid, with complete diastereoselectivity.
Stereoselective synthesis of α-hydroxy-β-amino acids using D-glyceraldehyde as the homochiral source
摘要:
A systematic study of the diastereoselective addition of methyl organometallic compounds to the benzyl imine derived from conveniently protected D-glyceraldehyde in order to develop a new approach to enantiomerically pure alpha-hydroxy-beta-amino acids is reported. Methylmagnesium bromide addition afforded the corresponding adduct, which can be further elaborated to give (2S, 3R) 3-amino-2-hydroxybutanoic acid, with complete diastereoselectivity.
Diastereoselective reduction of ketimines derived from (R)-3,4-dihydroxybutan-2-one: an alternative route to key intermediates for the synthesis of anticancer agent ES-285
作者:Ana C. Allepuz、Ramón Badorrey、María D. Díaz-de-Villegas、José A. Gálvez
DOI:10.1016/j.tetasy.2010.02.012
日期:2010.3
A simple and convenient procedure for the diastereoselective reduction of imines derived from (R)-3,4-dihydroxybutan-2-one is described. The use of sodium borohydride as a reducing agent in the reactions with pre-synthesised imines gave aminodiol derivatives with the appropriate stereochemistry for use as intermediates in the synthesis of anticancer agent ES-285. The aminodiols were isolated in ca. 62% yield. (C) 2010 Elsevier Ltd. All rights reserved.
Stereoselective synthesis of α-hydroxy-β-amino acids using D-glyceraldehyde as the homochiral source
作者:Carlos Cativiela、Maria D. Diaz-de-Villegas、JoséA. Gálvez
DOI:10.1016/0957-4166(96)00037-7
日期:1996.2
A systematic study of the diastereoselective addition of methyl organometallic compounds to the benzyl imine derived from conveniently protected D-glyceraldehyde in order to develop a new approach to enantiomerically pure alpha-hydroxy-beta-amino acids is reported. Methylmagnesium bromide addition afforded the corresponding adduct, which can be further elaborated to give (2S, 3R) 3-amino-2-hydroxybutanoic acid, with complete diastereoselectivity.