重氮甲烷 、
<4R-<4α,6α(1αS*,2α,6β)>>-<6-<2-(2-Methyl-5-methylene-6-phenyl-3-cyclohexen-1-yl)ethyl>-2,2-dimethyl-1,3-dioxan-4-yl>ethanoic acid 以
乙醚 为溶剂,
以79%的产率得到Methyl <4R-<4α,6α(1αS*,2α,6β)>>-<6-<2-(2-methyl-5-methylene-6-phenyl-3-cyclohexen-1-yl)ethyl>-2,2-dimethyl-1,3-dioxan-4-yl>ethanoate