[(1R,4R,5S,8S,9S,12S,13R,17S,18R,22S)-9,13-dimethyl-16-oxo-8-hexacyclo[11.9.0.01,17.04,12.05,9.018,22]docosanyl] acetate 以
乙酸乙酯 为溶剂,
以80%的产率得到[(1'R,3S,3aS,5'S,5aS,6R,7R,7'S,9aR,9bS)-6-ethenyl-7'-formyl-3a,6-dimethylspiro[1,2,3,4,5,5a,8,9,9a,9b-decahydrocyclopenta[a]naphthalene-7,6'-bicyclo[3.2.0]heptane]-3-yl] acetate