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