Benzotriazole-Mediated Syntheses of Depsipeptides and Oligoesters
作者:Ilker Avan、Srinivasa R. Tala、Peter J. Steel、Alan R. Katritzky
DOI:10.1021/jo200174j
日期:2011.6.17
Reactions of O-Pg(α-hydroxyacyl)benzotriazoles with (a) unprotected α-hydroxycarboxylic acids, (b) amino acids, and (c) amines afforded, respectively, chirally pure (a) oligoesters, (b) depsidipeptides, and (c) amide conjugates (yields 52−94%). N-Pg(α-Aminoacyl)benzotriazoles reacted with α-hydroxycarboxylic acids to yield depsidipeptides (47−87%). N-Pg(depsidipeptidoyl)benzotriazoles, obtained from