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Chlorinated briarane-type diterpenoids from the gorgonian coral Ellisella robusta (Ellisellidae) |
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| Authors: | Ping-Jyun Sung Michael Y Chiang Wei-Tse Tsai Jui-Hsin Su Yu-Mine Su Yang-Chang Wu |
| Institution: | aNational Museum of Marine Biology and Aquarium, Checheng, Pingtung 944, Taiwan bInstitute of Marine Biotechnology, National Dong Hwa University, Checheng, Pingtung 944, Taiwan cAsian Pacific Ocean Research Center, National Sun Yat-sen University, Kaohsiung 804, Taiwan dDepartment of Chemistry, National Sun Yat-sen University, Kaohsiung 804, Taiwan eDepartment of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan fGraduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan |
| Abstract: | Four chlorinated metabolites featuring briarane carbon skeletons have been isolated from the gorgonian coral Ellisella robusta, which was collected off the coast of southern Taiwan: two new natural products, robustolides D (1) and E (2), and two known metabolites, robustolides F (3) and G (4). The structures of metabolites 1–4 were determined by spectroscopic methods, using 1D and 2D NMR in particular. The structures and absolute stereochemistry of robustolides D (1), F (3), and G (4) were directly established by X-ray diffraction analysis. Robustolide D (1) is the first metabolite of briarane-related natural products found to possess two halogen atoms. |
| Keywords: | Briarane Robustolide Ellisella robusta X-ray diffraction |
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