Asymmetric Synthesis of All Stereoisomers of α-Methylthreonine Using an Organocatalytic Steglich Rearrangement Reaction as a Key Step
作者:Harald Gröger、Friedrich Dietz
DOI:10.1055/s-0029-1217140
日期:——
An efficientsyntheticroute to all four stereoisomers of α-methylthreonine has been established. Each type of stereoisomer has been isolated in diastereomerically pure form and with an enantiomeric excess of at least 86% ee. The key step in this multi-step synthesis is an enantioselective organocatalytic Steglich rearrangement reaction of O-acetylated azlactones. The Steglich rearrangement was also