[(2R,4aR,6S,7S,8S,8aR)-6-methoxy-2-phenyl-7-phenylmethoxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-yl] benzyl phosphate;tetrabutylazanium   、                                                                                      
phenyl 3-O-acetyl-2-O-benzyl-4,6-O-benzylidene-1-deoxy-1-thio-α-D-mannopyranoside                                                                                                                                                              在
                                                                                                                                                                                 
1-(苯基亚硫酰基)哌啶   、                                                                                                  
三氟甲磺酸酐   、                                                                                                  
2,4,6-三叔丁基嘧啶                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        以90%的产率得到[(2R,4aR,6R,7S,8S,8aR)-6-[[(2R,4aR,6S,7S,8S,8aR)-6-methoxy-2-phenyl-7-phenylmethoxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-yl]oxy-phenylmethoxyphosphoryl]oxy-2-phenyl-7-phenylmethoxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-yl] acetate