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      Antioxidant flavone glycosides from the leaves of Fargesia robusta.

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          Abstract

          The aqueous methanolic leaf extract of Fargesia robusta var. Pingwu was evaluated in vitro for its antioxidant capacity using the TEAC and ORAC assays. C-Glycosyl flavones, farobin A (1) and farobin B (2), together with three known compounds, tricin-5-O-glucopyranoside (3), 2''-O-α-rhamnosyl-6-C-(6-deoxy-ribo-hexos-3-ulosyl)luteolin (4), and luteolin-6-C-glucopyranoside (homoorientin) (5), were isolated from the hydroalcoholic extract of the leaves of F. robusta. The structures of the compounds were determined by spectroscopic analyses including UV, 1D and 2D NMR, and MS. Compounds 1, 4, and 5 exhibited potent antioxidant activity in the TEAC assay, while compounds 1, 3, and 5 showed the highest antioxidant capacity in the ORAC assay.

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          Author and article information

          Journal
          J. Nat. Prod.
          Journal of natural products
          American Chemical Society (ACS)
          1520-6025
          0163-3864
          Sep 24 2010
          : 73
          : 9
          Affiliations
          [1 ] Laboratory of Pharmacognosy and Phytochemistry, Faculty of Pharmaceutical Sciences, Ghent University, B-9000 Ghent, Belgium.
          Article
          10.1021/np100220g
          20863141

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