(2S,3S,5R)-3-Azido-2-benzoyloxy-5-<3'-azido-4'-O-p-nitrobenzoyl-2',3',6'-trideoxy-α-L-ribo-hexopyranosyloxy>cyclohexanone ethylene dithioacetal                                                                                                                                                              在
                                                                                                                                                                                 
sodium methylate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                                                        以100%的产率得到(2S,3R,4R,6R)-4-Azido-6-((7R,9R,10S)-9-azido-10-hydroxy-1,4-dithia-spiro[4.5]dec-7-yloxy)-2-methyl-tetrahydro-pyran-3-ol