methyl 3-O-benzyl-4,6-O-benzylidene-β-D-glucopyranoside   、                                                                                      
Acetic acid (2R,3R,4S,5R,6R)-5-acetoxy-4-benzyloxy-2-bromo-6-methyl-tetrahydro-pyran-3-yl ester                                                                                                                                                              在
                                                                                                                                                                                 
氰化汞                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
苯                                                                                  为溶剂,
                                                                                                                                                                                        以44%的产率得到Acetic acid (2S,3R,4S,5R,6R)-5-acetoxy-4-benzyloxy-2-((4aR,6R,7R,8S,8aR)-8-benzyloxy-6-methoxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yloxy)-6-methyl-tetrahydro-pyran-3-yl ester