A straightforward synthesis of both enantiomers of α-vinylalanine and α-ethynylalanine
作者:Alberto Avenoza、Carlos Cativiela、Jesús M Peregrina、David Sucunza、Marı́a M Zurbano
DOI:10.1016/s0957-4166(99)00533-9
日期:1999.12
This report describes the synthesis of enantiomerically pure (S)- and (R)-alpha-vinylalanines and (S)- and (R)-alpha-ethynylalanines, four quaternary alpha-amino acids, using a straightforward synthetic route and starting from (S)- and (R)-N-Boc-N,O-isopropylidene-alpha-methylserinals. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.
Preparation and Synthetic Applications of (<i>S</i>)- and (<i>R</i>)-<i>N</i>-Boc-<i>N,O</i>-isopropylidene-α-methylserinals: Asymmetric Synthesis of (<i>S</i>)- and (<i>R</i>)-2-Amino-2-methylbutanoic Acids (Iva)
作者:Alberto Avenoza、Carlos Cativiela、Francisco Corzana、Jesús M. Peregrina、María M. Zurbano
DOI:10.1021/jo990957o
日期:1999.10.1
describes an efficient and convenient large-scale synthesis procedure for (S)- and (R)-N-Boc-alpha-methylserinal acetonides (3 and 4) starting from (R)-2-methylglycidol 5. The application of both of these compounds as valuable chiral building blocks in the asymmetricsynthesis of alpha-methylamino acids is also demonstrated by the synthesis of (S)- and (R)-isovalines (Iva) (6 and 7).