Glycosylation with sialic acid at HO-3 of three different O-protected D-galactosides in acetonitrile/dichloromethane at low temperature
作者:Winnie Birberg、Hans Lönn
DOI:10.1016/0040-4039(91)80133-q
日期:1991.12
Three different O-protected D-galactosides have been compared as acceptors in alpha-sialoside synthesis using glycosyl donor 1, methylsulfenyl triflate as promoter, and acetonitrile/dichloromethane as solvent at - 70-degrees-C. The 6-O-benzylated acceptor 2 was the most efficient, the alpha(2-3) sialoside 5 was obtained in 39% isolated yield.