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Related Experiment Videos

Phenolic compounds from Anaphalis aureo-punctata.

Yan-Qi Wu1, Ya Li, Xian-Feng Lin

  • 1National Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, PR China. wu_yqi@sina.com

Die Pharmazie
|December 11, 2003
PubMed
Summary
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Researchers isolated a new acylated flavonoid glycoside and five known compounds from Anaphalis aureo-punctata. Certain flavonoid glycosides demonstrated significant inhibition of oxidative DNA strand breaks.

Area of Science:

  • Phytochemistry
  • Natural Products Chemistry
  • Medicinal Chemistry

Background:

  • Anaphalis aureo-punctata is a plant source of bioactive compounds.
  • Flavonoid glycosides are known for diverse biological activities.
  • Oxidative DNA damage is implicated in various diseases.

Purpose of the Study:

  • To isolate and characterize compounds from Anaphalis aureo-punctata.
  • To evaluate the potential of isolated compounds in preventing oxidative DNA damage.

Main Methods:

  • Extraction of the whole plant using ethanol.
  • Isolation of compounds using chromatographic techniques.
  • Structure elucidation using UV, IR, MS, and NMR spectroscopy.
  • Assessment of DNA strand break inhibition using Fenton reaction and NADH/PMS assays.

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Main Results:

  • A novel acylated flavonoid glycoside, 3-O-kaempferol-3-O-acetyl-6-O-(p-coumaroyl)-beta-D-glucopyranoside (1), was identified.
  • Five known phenolic compounds were also isolated and characterized.
  • Flavonoid glycosides (compounds 1, 2, and 3) exhibited significant, concentration-dependent inhibition of oxidative DNA strand breaks.

Conclusions:

  • Anaphalis aureo-punctata yields a new acylated flavonoid glycoside and other phenolic compounds.
  • The isolated flavonoid glycosides possess protective effects against oxidative DNA damage, suggesting therapeutic potential.