乙酸酐   、                                                                                      
2-(trimethylsilyl)ethyl 2,3,6-tri-O-benzoyl-4-O-<2,3-di-O-benzoyl-4-O-(4-deoxy-α-D-xylo-hexopyranosyl)-β-D-galactopyranosyl>-β-D-glucopyranoside                                                                                                                                                              在
                                                                                                                                                                                 
吡啶                                                                                                                                  作用下,
                                                                                                                                                                                                                            以98%的产率得到2-(trimethylsilyl)ethyl 4-O-<6-O-acetyl-2,3-di-O-benzoyl-4-O-(2,3,6-tri-O-acetyl-4-deoxy-α-D-xylo-hexopyranosyl)-β-D-galactopyranosyl>-2,3,6-tri-O-benzoyl-β-D-glucopyranoside