2-(tert-Butyl-dimethyl-silanyloxy)-4-((2R,3R,4S,5R,6R)-3,4,5-trihydroxy-6-hydroxymethyl-tetrahydro-pyran-2-ylsulfanyl)-butyronitrile                                                                                                                                                              在
                                                                                                                                                                                 
吡啶   、                                                                                                  camphor-10-sulfonic acid                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
N,N-二甲基甲酰胺                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 
Acetic acid (2S,4aR,6R,7R,8S,8aS)-7-acetoxy-6-[3-(tert-butyl-dimethyl-silanyloxy)-3-cyano-propylsulfanyl]-2-(4-methoxy-phenyl)-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yl ester