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Related Experiment Videos

Two new flavonoids from Andrographis rothii.

Muntha Kesava Reddy1, Mopuru Vijaya Bhaskar Reddy, Galla Jayakrishna

  • 1Natural Products Division, Department of Chemistry, Sri Venkateswara University, Paris, France.

Chemical & Pharmaceutical Bulletin
|February 11, 2003
PubMed
Summary

Researchers identified two novel flavonoids and two known flavones from the Andrographis rothii plant. Their chemical structures were confirmed using advanced nuclear magnetic resonance (NMR) spectroscopy techniques.

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Area of Science:

  • Phytochemistry
  • Natural Products Chemistry
  • Organic Chemistry

Background:

  • Andrographis rothii is a plant species with potential medicinal properties.
  • Flavonoids are a diverse class of natural compounds known for various biological activities.

Purpose of the Study:

  • To isolate and characterize chemical constituents from the whole plant of Andrographis rothii.
  • To identify novel flavonoid compounds and elucidate their structures.

Main Methods:

  • Phytochemical investigation of Andrographis rothii using chromatographic separation techniques.
  • Structure elucidation of isolated compounds utilizing one-dimensional (1D) and two-dimensional (2D) Nuclear Magnetic Resonance (NMR) spectroscopy.

Main Results:

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  • Two new flavonoids, 5,7,2',5'-tetramethoxyflavanone and 5-hydroxy-7,2'-dimethoxyflavone, were isolated.
  • Two known flavones, skullcapflavone I and echioidin, were also identified.
  • The structures of the new compounds were definitively established through comprehensive NMR spectral analysis.

Conclusions:

  • The study successfully identified and characterized novel flavonoid compounds from Andrographis rothii.
  • The findings contribute to the understanding of the phytochemical profile of Andrographis rothii.
  • This research provides a basis for further investigation into the potential bioactivities of these isolated flavonoids.