(+/-)-trans-3,4,4b,5,6,7,8,8a,9,10-decahydrophenanthren-1(2H)-one 在
吡啶 、
氨 、
lithium 作用下,
以
四氢呋喃 为溶剂,
反应 48.0h,
生成 (3S,8S,9S,10R,13S,14S,17S)-3-Acetoxy-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-17-carboxylic acid (1R,4aR,4bS,8aR,10aR)-(tetradecahydro-phenanthren-1-yl) ester