(2R,4aR,6S,7R,8R,8aS)-7-(dimethoxyphosphorylamino)-6-(4-methoxyphenoxy)-2-phenyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-ol   、                                                                                      3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl-O-trichloroacetimidate                                                                                                                                                              在
                                                                                                                                                                                 
三氟甲磺酸三甲基硅酯   、                                                                                                  MS 4 Angstroem                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        以64%的产率得到[(2R,3S,4R,5R,6R)-6-[[(2R,4aR,6S,7R,8R,8aS)-7-(dimethoxyphosphorylamino)-6-(4-methoxyphenoxy)-2-phenyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-yl]oxy]-3,4-diacetyloxy-5-(1,3-dioxoisoindol-2-yl)oxan-2-yl]methyl acetate