A simple total synthesis of naturally occurring hydroxy-amino acids by enzymatic kinetic resolution
作者:Yang Lu、Christine Miet、Nicole Kunesch、Jacques E. Poisson
DOI:10.1016/s0957-4166(00)80128-7
日期:1993.5
Both optically pure enantiomers of GABOB and isoserine were obtained by enzymatic kinetic resolution of acetylated precursors in three or four steps. The key intermediates were cyanohydrins available from simple aldehydes. This procedure can be applied to other unusual hydroxy amino acids widely distributed in biologically important peptides.
A simple total synthesis of both enantiomers of γ-amino-β-hydroxybutanoic acid (GABOB) by enzymatic kinetic resolution of cyanohydrin acetates
Both (R)-and (S)-3-cyano-e-hydroxy-propionic acid ethyl ester have been obtained via enzymatic kinetic resolution of the racemic acetate using lipase from Candida cylindracea and lipase from porcine pancreas respectively. Their selective reduction affords the corresponding (R)-and (S)-GABOB with high optical purity.