methyl (1S,3R,10S,11R,15R,16S)-5,11,15-trimethyl-6-oxo-2,7-dioxapentacyclo[8.8.0.01,3.04,8.011,16]octadeca-4,8-diene-15-carboxylate 在
间氯过氧苯甲酸 作用下,
以
二氯甲烷 为溶剂,
以70%的产率得到methyl (1S,3R,8R,10R,11R,12R,16R,17S)-5,12,16-trimethyl-6-oxo-2,7,9-trioxahexacyclo[9.8.0.01,3.04,8.08,10.012,17]nonadec-4-ene-16-carboxylate