Design and Use of an Oxazolidine Silyl Enol Ether as a New Homoalanine Carbanion Equivalent for the Synthesis of Carbon-Linked Isosteres of <i>O</i>-Glycosyl Serine and <i>N</i>-Glycosyl Asparagine
作者:Alessandro Dondoni、Alberto Marra、Alessandro Massi
DOI:10.1021/jo981861h
日期:1999.2.1
A trimethylsilyl enolether carrying the N-Boc 2,2-dimethyloxazolidine ring was designed to serve as a syntheticequivalent of the homoalanine carbanion for the introduction of the alpha-amino acid side chain at the anomeric carbon of sugars. This new functionalized silylenolether was prepared in multigram scale and high enantiomeric purity starting from methyl N-Boc-L-threoninate (six steps, 49%