| 英文摘要 |
Through the chemical screening of an octocoral, identified as Junceella fragilis, polyoxygenated briarane-type diterpenoid, (–)-11β,20β-epoxy-4-deacetoxyjunceellolide D (1) was discovered, which was then subject to single-crystal X-ray diffraction analysis to determine its absolute structure. The structure was verified with 2D NMR experiments, supplemented with a literature review. At the same time, conformation of previously-discovered briarane, (–)-11α,20α-epoxy-4-deacetoxyjunceellolide D was evaluated. |