重氮甲烷 、
(3S,3aS,5aS,6S,8R,9aR,9bS)-6-(4,4-Diphenyl-but-3-enyl)-3a,6-dimethyl-8-pentyl-dodecahydro-cyclopenta[a]naphthalene-3,8-diol 生成 3-((3aS,5aS,6S,8R,9aR,9bS)-8-Hydroxy-3a,6-dimethyl-3-oxo-8-pentyl-dodecahydro-cyclopenta[a]naphthalen-6-yl)-propionic acid methyl ester