β-羟基异戊酸   、                                                                                      [(2S,3R,4S,5R,6R)-3-amino-4,5-dibenzoyloxy-6-[2-(phenylmethoxycarbonylamino)ethoxy]oxan-2-yl]methyl benzoate                                                                                                                                                              在
                                                                                                                                                                                 
N,N-二异丙基乙胺   、                                                                                                  
Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-)                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        以575 mg的产率得到N-benzyloxycarbonylaminoethyl 4-(3-hydroxy-3-methylbutamido)-2,3,6-tri-O-benzoyl-4-deoxy-β-D-glucopyranoside