3-甲基-1-戊烯 、 6β-methoxy-3α,5-cyclo-5α-23,24-dinorcholan-22-iodide 在
正丁基锂 、
potassium tert-butylate 作用下,
生成 (1aS,3aR,3bS,5aR,6R,8aS,8bS,10R,10aR)-6-((R)-3-Ethyl-1,3-dimethyl-pent-4-enyl)-10-methoxy-3a,5a-dimethyl-hexadecahydro-cyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalene 、 、
(1aS,3aR,3bS,5aR,6R,8aS,8bS,10R,10aR)-6-((E)-(R)-1,5-Dimethyl-hept-4-enyl)-10-methoxy-3a,5a-dimethyl-hexadecahydro-cyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalene