No protecting groups are present in the highly reactive polymer-bound sugar 1-thiolates 1, which undergo reactions with sugar triflates 2 to give thio-oligosaccharides 3 in high yield. Tr=trityl=triphenylmethyl, Tf=trifluoromethylsulfonyl, Bz=benzoyl.
Identification of an acetyl disulfide derivative in the synthesis of thiosialosides
作者:Goreti Ribeiro Morais、Ines Felix Oliveira、Andrew J. Humphrey、Robert A. Falconer
DOI:10.1016/j.carres.2009.10.017
日期:2010.1
The first report of the formation of an acetyl disulfide sialoside during the synthesis of thioglycosides is described. This compound is a by-product in the synthesis of the 2-thioacetyl sialoside commonly used in thioglycoside preparation. Our investigations into the identification of this novel disulfide are described. (C) 2009 Elsevier Ltd. All rights reserved.