(1R,3S,4aS,5aR,12bS)-3-methyl-7,12-dioxo-1-((triisopropylsilyl)oxy)-1,3,4,5a,6,7,12,12b-octahydro-2H-tetrapheno[4a,5-b]oxirene-3,8-diyl diacetate 在
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
反应 0.08h,
以86%的产率得到Acetic acid (1R,3S,4aR,12bS)-8-acetoxy-4a-hydroxy-3-methyl-7,12-dioxo-1-triisopropylsilanyloxy-1,2,3,4,4a,7,12,12b-octahydro-benzo[a]anthracen-3-yl ester