phenethyl 2-azido-3-O-benzoyl-6-O-(tert-butyldiphenylsilyl)-2-deoxy-α-D-glucopyranoside                                                                                                                                                              在
                                                                                                                                                                                 
三氟化硼乙醚                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 tert-butyl (4R)-4-[[(3aR,7aS)-7a-hydroxy-3,6-dioxo-2,4,5,7-tetrahydro-1H-inden-3a-yl]methyl]-2,2-dimethyl-1,3-oxazolidine-3-carboxylate