Two New C20‐Diterpenoid Alkaloids from Aconitum carmichaelii |
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| Authors: | Yong Shen Ai‐Xue Zuo Zhi‐Yong Jiang Xue‐Mei Zhang Hong‐Ling Wang Ji‐Jun Chen |
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| Institution: | 1. State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, P.?R. China (phone: +86‐871‐5223265;2. fax: +86‐871‐5223265);3. Graduate University of Chinese Academy of Sciences, Beijing 100039, P.?R. China |
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| Abstract: | Two new C20‐diterpenoid alkaloids, named aconicarchamines A and B ( 1 and 2 , resp.), were isolated from Aconitum carmichaelii. By UV, IR, MS, and 1D‐ and 2D‐NMR analyses, their structures were elucidated as 14,17‐dihydro‐14,17‐dihydroxyajabicine and 15‐O‐acetyllassiocarpine. Compound 1 is the third C20‐diterpenoid alkaloid with the lycoctine skeleton bearing an exocyclic C‐atom at C(14). |
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| Keywords: | Aconitum carmichaeli Diterpenoid alkaloids Aconicarchamines A and B Ajabicine 14 17‐dihydro‐14 17‐dihydroxy‐ Lassiocarpine 15‐O‐acetyl‐ Alkaloids |
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