1,2,3,4-tetra-O-benzoyl-5-C-(tetrazol-5-yl)-α/β-D-xylopyranose   、                                                                                      
2,2,2-trifluoro-N-(4-methoxybenzyl)acetimidoyl chloride                                                                                                                                                              在
                                                                                                                                                                                 
三乙胺                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲苯                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 
1,2,3,4-tetra-O-benzoyl-5-C-[5-(4-methoxyphenyl)-4-(2,2,2-trifluoro-ethyl)-4H-1,2,4-triazol-3-yl]-α-D-xylopyranose   、                                                                                             1,2,3,4-tetra-O-benzoyl-5-C-[5-(4-methoxyphenyl)-4-(2,2,2-trifluoro-ethyl)-4H-1,2,4-triazol-3-yl]-β-D-xylopyranose