A new flavonoid glycoside, rhamnazin-3-O-β-D-apiosyl-(1→2)-β-D-[6″-(3-hydroxy-3-methylglutaric methyl ester)]-glucoside (1), was isolated together with seven known flavonoid compounds from mistletoe transformed by Rhodobacter sphaeroides (PSBT). Its structure was elucidated on the basis of MS, 1D, and 2D NMR techniques. All of the eight compounds were subjected to antioxidant activity screening.
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Acknowledgment
Financial support for this study was provided by the National Natural Science Foundation of China (Grant No. 30672621, 81173473), and the Shanxi Provincial Natural Science Foundation (Grant No. 2010011048-2).
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Published in Khimiya Prirodnykh Soedinenii, No. 5, September–October, 2012, pp. 682–684.
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Li, R.J., Yang, G.E., Bai, H.J. et al. A new flavonoid glycoside from mistletoe transformed by Rhodobacter sphaeroides . Chem Nat Compd 48, 761–764 (2012). https://doi.org/10.1007/s10600-012-0376-0
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DOI: https://doi.org/10.1007/s10600-012-0376-0