withametelin F 在
palladium on activated charcoal
吡啶 、
氢气 作用下,
以
甲醇 为溶剂,
生成 [(2R)-2-[(2R)-4,5-dimethyl-6-oxo-2,3-dihydropyran-2-yl]-2-[(1S,2R,7S,9R,11S,12S,15R,16S)-2,16-dimethyl-3-oxo-8-oxapentacyclo[9.7.0.02,7.07,9.012,16]octadecan-15-yl]ethyl] acetate