methyl (-)-(E)-4-[(3aS,4S,7R,7aS)-7-hydroxy-2,2-dimethyl-7-((4R,5S,E)-4-methyl-5-(triethylsilyloxy)hex-2enyl)tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-4-yl]-3-methylbut-2-enoate 在
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
反应 984.0h,
以84%的产率得到methyl (E)-4-[(3aS,4S,7R,7aS)-7-hydroxy-7-((4R,5S,E)-5-hydroxy-4-methylhex-2enyl)-2,2-dimethyltetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-4-yl]-3-methylbut-2-enoate