Three New Caged Prenylxanthones from Garcinia bracteata |
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| Authors: | Zhi Na Hua‐Bin Hu Qing‐Fei Fan |
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| Institution: | 1. Xishuangbanna Tropical Botanical Garden, the Chinese Academy of Sciences, Mengla 666303, P.?R. China (phone: +86‐691‐8715910;2. fax: +86‐691‐8715910) |
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| Abstract: | Three new caged prenylxanthones (xanthone=9H‐xanthen‐9‐one), named neobractatin ( 1 ), 3‐O‐methylneobractatin ( 2 ), and 3‐O‐methylbractatin ( 3 ), along with eight known compounds, were isolated from the twig of Garcinia bracteata. The structures of the new compounds were elucidated on the basis of 1D‐ and 2D‐NMR experiments, including HMBC, HSQC, 1H,1H‐COSY, and ROESY, as well as HR‐MS analysis. |
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| Keywords: | Garcinia bracteata Xanthones prenyl‐ Neobractatin Bractatin |
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