2,3,4-tri-O-acetyl-6-O-<(diphenoxy)phosphoryl>-α-D-mannopyranosyl bromide   、                                                                                      8-methoxycarbonyloctyl 2,3,4-tri-O-benzyl-6-O-(3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-α-D-mannopyranoside                                                                                                                                                              在
                                                                                                                                                                                 
silver trifluoromethanesulfonate   、                                                                                                  
1,1,3,3-四甲基脲                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
1,2-二氯乙烷                                                                                  为溶剂,
                                                                                                                                                    反应 56.0h,
                                                                                                                以65%的产率得到8-methoxycarbonyloctyl O-<2,3,4-tri-O-acetyl-6-O-(diphenoxy)phosphoryl-α-D-mannopyranosyl>-(1-2)-O-(3,4,6-tri-O-benzyl-α-D-mannopyranosyl)-(1-6)-2,3,4-tri-O-benzyl-α-D-mannopyranoside