3,4-anhydro-1,6-di-O-trityl-β-D-lyxo-hexulofuranosyl 2,3,4-tri-O-acetyl-6-O-trityl-α-D-glucopyranoside                                                                                                                                                              在
                                                                                                                                                                                 
溶剂黄146   、                                                                                                  lithium bromide                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
N,N-二甲基甲酰胺                                                                                  为溶剂,
                                                                                                                                                                                        以71%的产率得到4-bromo-4-deoxy-1,6-di-O-trityl-β-D-fructofuranosyl 2,3,4-tri-O-acetyl-6-O-trityl-α-D-glucopyranoside