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Bioactive phenolics from Seriphidium stenocephalum.

Nusrat Shafiq1, Naheed Riaz, Shabir Ahmed

  • 1Department of Chemistry , Baghdad-ul-Jadeed Campus, The Islamia University of Bahawalpur, 63100 Bahawalpur, Pakistan.

Journal of Asian Natural Products Research
|February 21, 2013
PubMed
Summary

Researchers isolated seven compounds from Seriphidium stenocephalum, with five showing significant enzyme inhibitory activities against acetylcholinesterase, butyrylcholinesterase, and lipoxygenase.

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Area of Science:

  • Phytochemistry
  • Natural Products Chemistry
  • Enzymology

Background:

  • Seriphidium stenocephalum is a plant species with potential medicinal properties.
  • Natural products are a rich source of bioactive compounds for drug discovery.

Purpose of the Study:

  • To isolate and characterize compounds from Seriphidium stenocephalum.
  • To evaluate the in vitro enzyme inhibitory activities of the isolated compounds.

Main Methods:

  • Chromatographic separation techniques were employed to isolate compounds.
  • Spectroscopic methods (1D, 2D NMR, HRMS) were used for structural elucidation.
  • In vitro enzyme inhibition assays were performed against acetylcholinesterase, butyrylcholinesterase, and lipoxygenase.

Main Results:

  • Three new compounds (stenocepflavone, stenocepflavan, stenocephol) were identified, along with four known compounds.
  • Compounds stenocepflavone (1) and cirsimaritin (4), 5,7,5'-trihydroxy-3',4',6-trimethoxyflavone (5), 5,6,7,5'-tetrahydroxy-4'-methoxyflavone (6), and axillaroside (7) demonstrated significant inhibitory activity against all tested enzymes.
  • Compounds stenocepflavan (2) and stenocephol (3) showed no significant activity.

Conclusions:

  • Seriphidium stenocephalum is a source of bioactive flavonoids with potential therapeutic applications.
  • The identified compounds, particularly stenocepflavone and the known compounds 4-7, show promise as enzyme inhibitors for conditions involving these enzymes.