Acetic acid (1R,3S,4aS,12bS)-8-acetoxy-4a-hydroxy-3-methyl-7,12-dioxo-1-triisopropylsilanyloxy-1,2,3,4,4a,5,6,7,12,12b-decahydro-benzo[a]anthracen-3-yl ester 在
氟化氢吡啶 作用下,
以
乙腈 为溶剂,
反应 0.5h,
以89%的产率得到Acetic acid (1R,3S,4aS,12bS)-8-acetoxy-1,4a-dihydroxy-3-methyl-7,12-dioxo-1,2,3,4,4a,5,6,7,12,12b-decahydro-benzo[a]anthracen-3-yl ester