Palladium-Controlled β-Selective Glycosylation in the Absence of the C(2)-Ester Participatory Group
作者:Enoch A. Mensah、Joseph M. Azzarelli、Hien M. Nguyen
DOI:10.1021/jo802468p
日期:2009.2.20
development of a newglycosylation method for the stereoselective synthesis of β-glycosides in the absence of the traditional C(2)-ester neighboring group effect is described. This process relies on the ability of the cationic palladium catalyst, Pd(PhCN)2(OTf)2 generated in situ from Pd(PhCN)2Cl2 and AgOTf, to direct β-selectivity. The newglycosylation reaction is highly β-selective and proceeds under