Trichloro-acetic acid 3-(2-hydroxy-ethoxy)-2,2-bis-(2-hydroxy-ethoxymethyl)-propyl ester   、                                                                                      
2-azi-1-(2,3,4,6-tetra-O-benzoyl-α-D-mannopyranosyloxy)-5-oxa-7-thiaoctane                                                                                                                                                              在
                                                                                                                                                                                 
N-碘代丁二酰亚胺   、                                                                                                  4 A molecular sieve   、                                                                                                  
四丁基三氟甲磺酸铵                                                                                                                                  作用下,
                                                                                                                                                                                                                            生成                                                 2,2,2-tris[10-azi-11-(2,3,4,6-tetra-O-benzoyl-α-D-mannopyranosyloxy)-2,5,7-trioxaundecyl]ethyl trichloroacetate