((3aS,5bS,9aS,10R,10bS)-3a-isopropyl-2,2,5b,9,9-pentamethyl-5-oxo-4,5,5b,6,7,8,9,9a,10,10b-decahydro-3aH-fluoren[2,1-d][1,3]dioxol-10-yl)methyl acetate 在
lead(IV) tetraacetate 作用下,
以
苯 为溶剂,
反应 72.0h,
以83%的产率得到((3aR,4R,5bS,9aS10R,10bS)-4-acetoxy-3a-isopropyl-2,2,5b,9,9-pentamethyl-5-oxo-4,5,5b,6,7,8,9,9a,10,10b-decahydro-3aH-fluoren[2,1-d][1,3]dioxol-10-yl)methyl acetate