(1S,4S,5S,8S,9S,12S,13R,15R)-9,13-dimethyl-2-methylidene-8-[(2-methylpropan-2-yl)oxy]-16,19-dioxapentacyclo[13.3.1.01,13.04,12.05,9]nonadec-17-ene 、
间氯过氧苯甲酸 以
二氯甲烷 为溶剂,
以65%的产率得到[(1S,2R,4S,5S,8S,9S,12S,13R,15S,17R,18S)-18-hydroxy-9,13-dimethyl-8-[(2-methylpropan-2-yl)oxy]spiro[16,19-dioxapentacyclo[13.3.1.01,13.04,12.05,9]nonadecane-2,2'-oxirane]-17-yl] 3-chlorobenzoate