Acetic acid (2R,3R,4R,5S,6R)-3-acetylamino-2-azido-5-((2S,3R,4R,5S,6R)-4,5-diacetoxy-3-acetylamino-6-benzyloxymethyl-tetrahydro-pyran-2-yloxy)-6-hydroxymethyl-tetrahydro-pyran-4-yl ester   、                                                                                      
perbenzyl fucosyl bromide                                                                                                                                                              在
                                                                                                                                                                                 
四丁基溴化铵                                                                                                                                  作用下,
                                                                                                                                                                                                                            以71%的产率得到[(2R,3S,4R,5R,6S)-5-acetamido-6-[(2R,3S,4R,5R,6R)-5-acetamido-4-acetyloxy-6-azido-2-[[(2R,3S,4R,5R,6S)-6-methyl-3,4,5-tris(phenylmethoxy)oxan-2-yl]oxymethyl]oxan-3-yl]oxy-4-acetyloxy-2-(phenylmethoxymethyl)oxan-3-yl] acetate