tert-butyl (+)-(7R,13S,14R,17S)-17-tert-butoxy-3-(tert-butyldimethylsilanyloxy)-13-methyl-2,3,4,6,7,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthrene-7-carboxylate 在
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
反应 24.0h,
生成 tert-butyl (+)-(7R,13S,14R,17S)-17-tert-butoxy-3-hydroxy-13-methyl-2,3,4,6,7,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthrene-7-carboxylate