4-methoxyphenyl 2-deoxy-2-phthalimido-β-D-glucopyranoside   、                                                                                      3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-α-D-glucopyranosyl 2,2,2-trichloroacetimidate                                                                                                                                                              在
                                                                                                                                                                                 
三氟甲磺酸三甲基硅酯                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷   、                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                                                        以30%的产率得到Acetic acid (2R,3S,4R,5R,6R)-3-acetoxy-2-acetoxymethyl-5-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-6-[(2R,3S,4R,5R,6S)-5-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-3,4-dihydroxy-6-(4-methoxy-phenoxy)-tetrahydro-pyran-2-ylmethoxy]-tetrahydro-pyran-4-yl ester