Synthesis of Type II β-Turn Surrogate Dipeptides Based on <i>s</i><i>yn</i>-α-Amino-α,β-dialkyl-β-lactams
作者:Claudio Palomo、Jesus M. Aizpurua、Iñaki Ganboa、Ana Benito、Lourdes Cuerdo、Raluca M. Fratila、Azucena Jimenez、Iraida Loinaz、José I. Miranda、Kinga R. Pytlewska、Andreea Micle、Anthony Linden
DOI:10.1021/ol048348c
日期:2004.11.1
The achiral bis(trimethylsilyl)methyl group acts as an efficient stereochemical determinant of the alpha-alkylation reaction in beta-branched alpha-phenyloxazolidinyl- or alpha-diphenyloxazolidinyl-beta-lactams and provides the first stereocontrolled access to syn-alpha-amino-alpha,beta-dialkyl(aryl)-beta-lactams. These products are readily transformed into type II beta-turn mimetic surrogates 2B.