3-[(E)-6-(5-methoxy-1-cyclohexenyl)-3-methyl-3-hexenyl]-3-methyl-1-cyclopentenyl trimethylsilyl ether 在
9,10-二氰基蒽 作用下,
以
乙腈 为溶剂,
生成 (+/-)-(3aR,3bR,5aR,7S,9aR,9bS,11aR)-7-methoxy-9b,11a-dimethylhexadecahydro-3H-cyclopenta[a]phenanthren-3-one 、 (+/-)-(3aR,3bR,5aR,7R,9aR,9bS,11aR)-7-methoxy-9b,11a-dimethylhexadecahydro-3H-cyclopenta[a]phenanthren-3-one 、 (+/-)-(3aS,3bR,5aR,7R,9aR,9bS,11aS)-7-methoxy-9b,11a-dimethylhexadecahydro-3H-cyclopenta[a]phenanthren-3-one 、 (+/-)-(3aS,3bR,5aR,7S,9aR,9bS,11aS)-7-methoxy-9b,11a-dimethylhexadecahydro-3H-cyclopenta[a]phenanthren-3-one