Diastereoselective Strecker reaction of D-glyceraldehyde derivatives. A novel route to (2S,3S)- and (2R,3S)-2-amino-3,4-dihydroxybutyric acid
作者:Carlos Cativiela、María D. Día-de-Villegas、JoséA. Gálvez、JoséI. García
DOI:10.1016/0040-4020(96)00493-0
日期:1996.7
Efficient and stereoselective synthetic routes to enantiomerically pure (2R,3S)- and (2R,3S)-2-amino-3,4-dihydroxybutyricacid have been developed using the stereoselective Strecker type reaction of carbonyl compounds derived from appropriately protected D-glyceraldehyde. The stereoselectivity of the cyanide addition was shown to be dependent on the presence of metal complexing agents, which is essential
A stereoselective synthesis of (2R,3S)-2-amino-3,4-dihydroxybutyric acid using an ether directed aza-Claisen rearrangement
作者:Michael D. Swift、Andrew Sutherland
DOI:10.1016/j.tetlet.2007.03.161
日期:2007.5
A new approach for the stereoselectivesynthesis of (2R,3S)-2-amino-3,4-dihydroxybutyric acid, an α-amino acid from Lyophyllum ulmarium, has been accomplished using an ether directed aza-Claisen rearrangement. On investigation of optimal conditions for this key step it was shown for the first time that Au(I) can be used to catalyse this transformation.
Studies on the aza-Claisen rearrangement of 4,5-dihydroxylated allylic trichloroacetimidates: the stereoselective synthesis of (2R,3S)- and (2S,3S)-2-amino-3,4-dihydroxybutyric acids
作者:Michael D. Swift、Andrew Sutherland
DOI:10.1016/j.tet.2008.07.062
日期:2008.9
Two new synthetic approaches, involving substrate directed aza-Claisen rearrangements and aza-Claisen rearrangements mediated by chiral Pd(II) catalysts, have been developed for the stereoselective synthesis of (2R,3S)-2-amino-3,4-dihydroxybutyric acid, a dihydroxylated alpha-amino acid from the edible mushroom, Lyophyllum ulmarium and its (2S,3S)-unnatural diastereomer. (C) 2008 Elsevier Ltd. All rights reserved.
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