作者:Annie Malleron、Yaël Hersant、Christine Le Narvor
DOI:10.1016/j.carres.2005.10.004
日期:2006.1
The sulfated pentasaccharide benzyl O-(3-O-sulfo-beta-D-galactopyranosyl)-(1 -> 3)-O-[(alpha-L-fucopyranosyl)-(1 -> 4)]-O-(2-acetamido -2-deoxy-beta-D-glucopyranosyl)-(1 -> 3)-O-(beta-D-galactopyranosyl)-(1 -> 4)-O-beta-D-glucopyranoside sodium salt was synthesized using a chemo-enzymatic approach. Lacto-N-tetraose, obtained from two disaccharides [4-metboxybenzyl O-(2,3,4,6-tetra- O-acetyl-beta-D-galactopranosyl)-(1 -> 3)-4,6-O-benzylidene-2-deoxy-2-phtalimido-beta-D-glucopyranoside and benzyl 2,6-di-O-acetyl -beta-D-galactopyranosyl-(1 -> 4)-2,3,6-tri -O-acetyl-beta-D-glucopyranoside], was regioselectively sulfated at the 3 OH position of the terminal galactose using the stannylene procedure. The fucosylation of the sulfated tetrasaccharide was performed using soluble or immobilized fucosyltransferase FucT-III to give the title compound. (c) 2005 Elsevier Ltd. All rights reserved.