A New Hydrolyzable Tannin from Balanophora harlandii with Radical‐Scavenging Activity |
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| Authors: | Wei Wang Shu‐Fen Zeng Chong‐Ren Yang Ying‐Jun Zhang |
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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: +86‐871‐5223235;2. fax: +86‐871‐5150124);3. Graduate School of Chinese Academy of Sciences, Beijing 100049, P.?R. China |
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| Abstract: | One new hydrolyzable tannin, 1‐O‐(E)‐p‐coumaroyl]‐3‐O‐galloyl‐β‐D ‐glucopyranose ( 1 ), was isolated from the rhizome of Balanophora harlandii, together with 18 known phenolic compounds. Their structures were determined by detailed spectroscopic analysis. Of the known compounds, 3‐O‐caffeoyl‐D ‐glucopyranose ( 6 ) was obtained as a natural product for the first time, and compounds 2 – 6 and 8 – 19 were identified for the first time from this plant. The radical‐scavenging activity of the isolated compounds was tested by a DPPH assay. |
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| Keywords: | Balanophora harlandii Phenolic compounds Dihydrochalcones 2 2‐Diphenyl‐1‐(2 4 6‐trinitrophenyl)hydrazinyl (DPPH) Radical‐scavenging activity |
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