(R)-5-((1aR,3aR,3bS,5aR,6R,8aS,8bS,10R,10aR)-10-Methoxy-3a,5a-dimethyl-hexadecahydro-cyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalen-6-yl)-2,2-dimethyl-hexanoic acid methyl ester 在
吡啶 、
氯化亚砜 作用下,
生成 (1aR,3aR,3bS,5aR,6R,8aS,8bS,10R,10aR)-6-((E)-(R)-5-Ethyl-1,4,4-trimethyl-hept-5-enyl)-10-methoxy-3a,5a-dimethyl-hexadecahydro-cyclopenta[a]cyclopropa[2,3]cyclopenta[1,2-f]naphthalene