(3bS,6R,8aS,8bS,10aR)-10-Methoxy-3a,5a-dimethyl-6-[(1R,4R)-1-methyl-4-((1R,2R)-2-methyl-cyclopropyl)-pentyl]-hexadecahydro-cyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalene 在
对甲苯磺酸 作用下,
以
1,4-二氧六环 为溶剂,
生成 (8S,9S,14S,17R)-10,13-Dimethyl-17-[(1R,4R)-1-methyl-4-((1R,2R)-2-methyl-cyclopropyl)-pentyl]-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-ol