N-{(S)-1-[(S)-2,2-dimethyl-1,3-dioxolan-4-yl]but-3-enyl}hydroxylamine   、                                                                                      
(-)-6-deoxy-1,2:3,4-di-O-isopropylidene-α-D-galacto-heptodialdo-1,5-pyranose                                                                                                                                                              在
                                                                                                                                                                                 magnesium sulfate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 4.0h,
                                                                                                                以73%的产率得到(S,Z)-1-((S)-2,2-dimethyl-1,3-dioxolan-4-yl)-N-(2-((3aR,5R,5aS,8aS,8bR)-2,2,7,7-tetramethyltetrahydro-3aH-bis[1,3]dioxolo[4,5-b:4',5'-d]pyran-5-yl)ethylidene)but-3-en-1-amine oxide