benzyl N-[(3aR,4R,5R,7aR)-7-[[(4aR,6S,7R,8R,8aR)-6-methoxy-7-(methoxymethoxy)-2,2-dimethyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-yl]methyl]-4-[tert-butyl(dimethyl)silyl]oxy-2,2-dimethyl-3a,4,5,7a-tetrahydro-1,3-benzodioxol-5-yl]carbamate                                                                                                                                                              在
                                                                                                                                                                                 sodium tetrahydroborate   、                                                                                                  
臭氧                                                                                                                                  作用下,
                                                                                                                                                                                                                            生成