1,2:3,4-二-O-异亚丙基-α-D-半乳糖-己二醛-1,5-吡喃糖 、
1-(3-nitrophenyl)-2-(triphenylphosphoranylidene)ethanone 以
氯仿 为溶剂,
反应 5.0h,
以60%的产率得到(E)-1-(3-Nitro-phenyl)-3-((3aR,5R,5aS,8aS,8bR)-2,2,7,7-tetramethyl-tetrahydro-bis[1,3]dioxolo[4,5-b;4',5'-d]pyran-5-yl)-propenone