benzyl 2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl-(1->3)-2,4,6-tri-O-benzoyl-β-D-glucopyranosyl-(1->3)-2,4,6-tri-O-benzoyl-β-D-glucopyranosyl-(1->3)-2,4,6-tri-O-benzoyl-β-D-glucopyranosyl-(1->3)-2,4,6-tri-O-benzoyl-β-D-glucopyranosyl-(1->3)-4,6-di-O-benzoyl-β-D-mannopyranoside                                                                                                                                                              在
                                                                                                                                                                                 
sodium methylate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇   、                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 6.0h,
                                                                                                                以96%的产率得到benzyl β-D-glucopyranosyl-(1->3)-β-D-glucopyranosyl-(1->3)-β-D-glucopyranosyl-(1->3)-β-D-glucopyranosyl-(1->3)-β-D-glucopyranosyl-(1->3)-β-D-mannopyranoside