(R,Z)-1-((S)-2,2-dimethyl-1,3-dioxolan-4-yl)-N-(((3aR,5R,5aS,8aS,8bR)-2,2,7,7-tetramethyltetrahydro-3aH-bis[1,3]dioxolo[4,5-b:4',5'-d]pyran-5-yl)methylene)but-3-en-1-amine oxide 以
甲苯 为溶剂,
反应 72.0h,
以36%的产率得到(2R,4R,6S)-2-((S)-2,2-dimethyl-1,3-dioxolan-4-yl)-6-((3aR,5R,5aS,8aS,8br)-2,2,7,7-tetramethyltetrahydro-3ah-bis[1,3]dioxolo[4,5-b:4-,5'-d]pyran-5-yl)-7-oxa-1-azabicyclo[2.2.1]heptane