乙酸酐   、                                                                                      (2R,3R,4S,5R,6R)-2-[(2R,3R,4R,5R,6R)-4,5-Dihydroxy-2-hydroxymethyl-6-(2-trimethylsilanyl-ethoxy)-tetrahydro-pyran-3-yloxy]-6-methyl-tetrahydro-pyran-3,4,5-triol                                                                                                                                                              在
                                                                                                                                                                                 
吡啶                                                                                                                                  作用下,
                                                                                                                                                                                        反应 18.0h,
                                                                                                                生成                                                 
2-(Trimethylsilyl)ethyl 2,3,6-tri-O-acetyl-4-O-(2,3,4-tri-O-acetyl-α-D-fucopyranosyl)-β-D-galactopyranoside