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Lignan glycosides and flavonoids from Saraca asoca with antioxidant activity

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Abstract

Five lignan glycosides, lyoniside, nudiposide, 5-methoxy-9-β-xylopyranosyl-(−)-isolariciresinol, icariside E3, and schizandriside, and three flavonoids, (−)-epicatechin, epiafzelechin-(4β→8)-epicatechin and procyanidin B2, together with β-sitosterol glucoside, were isolated from a methyl alcohol (MeOH) extract of Saraca asoca dried bark. Their structures were determined by 1D and 2D nuclear magnetic resonance (NMR) and mass spectroscopic analysis. Antioxidant activities were evaluated by 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging assay.

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Acknowledgments

This work was partly supported by a Grant-in-Aid from Tokyo Biochemical Research Foundation (TBRF), Japan.

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Authors and Affiliations

  1. Graduate School of Pharmaceutical Sciences, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan

    Samir Kumar Sadhu, Takashi Ohtsuki & Masami Ishibashi

  2. Pharmacy Discipline, Life Science School, Khulna University, Khulna, 9208, Bangladesh

    Samir Kumar Sadhu & Amina Khatun

  3. Faculty of Pharmacy, Silpakorn University, Nakorn Pathom, 73000, Thailand

    Panadda Phattanawasin

Authors
  1. Samir Kumar Sadhu
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  2. Amina Khatun
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  3. Panadda Phattanawasin
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  4. Takashi Ohtsuki
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  5. Masami Ishibashi
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Correspondence to Masami Ishibashi.

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Sadhu, S.K., Khatun, A., Phattanawasin, P. et al. Lignan glycosides and flavonoids from Saraca asoca with antioxidant activity. J Nat Med 61, 480–482 (2007). https://doi.org/10.1007/s11418-007-0182-3

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  • DOI: https://doi.org/10.1007/s11418-007-0182-3

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