(4aR,6R,7R,8R,8aS)-6-[(2R,3S,4R,5R,6S)-6-((1R,2R,3S,4R,5R)-3,4-Dimethoxy-6,8-dioxa-bicyclo[3.2.1]oct-2-yloxy)-4,5-dihydroxy-2-hydroxymethyl-tetrahydro-pyran-3-yloxy]-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxine-7,8-diol   、                                                                                      
碘甲烷                                                                                                                                                              在
                                                                                                                                                                                 sodium hydride                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
N,N-二甲基甲酰胺                                                                                  为溶剂,
                                                                                                                                                    反应 5.0h,
                                                                                                                生成                                                 
(4aR,6R,7R,8S,8aR)-6-[(2R,3R,4S,5R,6S)-6-((1R,2R,3S,4R,5R)-3,4-Dimethoxy-6,8-dioxa-bicyclo[3.2.1]oct-2-yloxy)-4,5-dimethoxy-2-methoxymethyl-tetrahydro-pyran-3-yloxy]-7,8-dimethoxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxine