Use of a phenyl 1-selenogalactofuranoside as a glycosyl donor for the synthesis of galactofuranosyl-containing disaccharides
作者:Blair D. Johnston、B.Mario Pinto
DOI:10.1016/s0008-6215(97)10016-7
日期:1997.12
The use of acetylated phenyl 1-seleno-beta-D-galactofuranoside as a glycosyl donor for the synthesis of protected D-Galf-beta-(1-->3)-alpha-D-Manp as its methyl or ethylthio glycoside has been demonstrated. Activation of the selenoglycoside over a thioglycoside acceptor by NIS/TfOH is extremely selective and gives the ethylthio disaccharide in 91% yield. The parent disaccharide is found as a terminal