2-[(2R,4aR,6S,7R,8S,8aS)-7-(2-Bromo-ethyl)-6-methoxy-2-phenyl-8-vinyl-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yl]-N,N-dimethyl-acetamide                                                                                                                                                              在
                                                                                                                                                                                 
偶氮二异丁腈   、                                                                                                  tri-n-butyl hydride                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
苯                                                                                  为溶剂,
                                                                                                                                                                                        以98%的产率得到methyl 4,6-O-benzylidene-2,3-dideoxy-3-C-((N,N-dimethylcarbamoyl)methyl)-α-D-allopyranosido<3,2-b>-(R)-methylcyclopentane