methyl (1R,2S,3R,6R,13R,14R,15R,16S,17S)-15,16-dihydroxy-9,13-dimethyl-3-(3-methylbut-2-enoyloxy)-4,10-dioxo-5,18-dioxapentacyclo[12.5.0.01,6.02,17.08,13]nonadeca-8,11-diene-17-carboxylate 在
Wilkinson's catalyst 氢气 作用下,
以
苯 为溶剂,
反应 30.0h,
以62%的产率得到methyl (1R,2S,3R,6R,13R,14R,15R,16S,17S)-15,16-dihydroxy-9,13-dimethyl-3-(3-methylbut-2-enoyloxy)-4,10-dioxo-5,18-dioxapentacyclo[12.5.0.01,6.02,17.08,13]nonadec-8-ene-17-carboxylate