Novel Catalytic Synthetic Route to Protected α-Methyl Threonine and the First Asymmetric Acetyl Migration in a Steglich Rearrangement Reaction
作者:Harald Gröger、Friedrich Dietz
DOI:10.1055/s-2008-1032104
日期:——
A short synthetic route to protected alpha-methyl threonine 5 as a representative example for (protected) alpha-methylated alpha-amino-beta-hydroxy acids bearing a stereogenic quaternary carbon center in a-position was developed. This multistep synthesis is based on the use of an easily accessible prochiral starting material in the presence of an organocatalyst, and allows the access to all four types