去氢鸦胆醇 在
palladium on activated charcoal
氢气 作用下,
以
甲醇 为溶剂,
反应 5.0h,
以11.6%的产率得到methyl (1R,2S,3R,6R,11R,13R,14R,15R,16S,17S)-3-[(E)-4-acetyloxy-3,4-dimethylpent-2-enoyl]oxy-11,15,16-trihydroxy-9,13-dimethyl-4,10-dioxo-5,18-dioxapentacyclo[12.5.0.01,6.02,17.08,13]nonadec-8-ene-17-carboxylate