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Sesquiterpene lactones from Inula montana L.

M A González-Romero1, L Villaescusa-Castillo, A M Díaz-Lanza

  • 1Departamento de Farmacología, Facultad de Farmacia, Universidad de Alcalá, Madrid, Spain.

Zeitschrift Fur Naturforschung. C, Journal of Biosciences
|December 1, 2000
PubMed
Summary

The aerial parts of Inula montana yielded five sesquiterpene lactones, including a novel compound, 1beta-hydroxy-3beta-acetoxy-eudesm-4(15),11(13)-dien-12-8beta-olide. These compounds were identified using advanced NMR spectroscopy techniques.

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Area of Science:

  • Natural Product Chemistry
  • Phytochemistry
  • Organic Chemistry

Background:

  • Inula montana is a plant species known for its potential medicinal properties.
  • Sesquiterpenoids, a class of natural products, are often investigated for their diverse biological activities.
  • Previous phytochemical investigations of Inula montana may not have fully characterized its sesquiterpenoid profile.

Purpose of the Study:

  • To investigate the sesquiterpenoid composition of the aerial parts of Inula montana.
  • To identify and characterize known and potentially novel sesquiterpene lactones from this plant source.
  • To elucidate the chemical structures of isolated compounds.

Main Methods:

  • Extraction and isolation of compounds from the aerial parts of Inula montana.

Related Experiment Videos

  • Structure elucidation using 1D and 2D-Nuclear Magnetic Resonance (NMR) spectroscopy.
  • Identification of sesquiterpene lactones.

    • Main Results:

    • Five sesquiterpene lactones were identified: isoinuviscolide, gaillardin, pulchellin-C, and pulchellin-E.
    • A novel sesquiterpene lactone, 1beta-hydroxy-3beta-acetoxy-eudesm-4(15),11(13)-dien-12-8beta-olide, was discovered.
    • The structures of all isolated compounds were confirmed through comprehensive NMR analysis.

    Conclusions:

    • The study successfully identified five sesquiterpene lactones in Inula montana, expanding the knowledge of its chemical constituents.
    • The discovery of a novel sesquiterpene lactone highlights the potential of Inula montana as a source of new natural products.
    • The detailed structural information obtained through NMR spectroscopy provides a basis for further pharmacological investigations.