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Related Experiment Videos

[Sesquiterpenlactone aus Arnica chamissonis].

G Willuhn1, J Kresken, D Wendisch

  • 1Institut für Pharmazeutische Biologie der Universität Düsseldorf.

Planta Medica
|March 1, 1983
PubMed
Summary

Two new pseudoguaianolides, 4-O-acetyl-6-desoxychamissonolide and arnicolide G, were isolated from Arnica chamissonis flowers. Their structures were determined using spectroscopic analysis, expanding knowledge of Arnica natural products.

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11Alpha,13-and 11beta,13-dihydro-4H-xanthalongin 4-O-beta-glucopyranosides: new sesquiterpene lactone glycosides from flowers of Arnica amplexicaulis and A. mollis.

Planta medica·1996

Area of Science:

  • Phytochemistry
  • Natural Product Chemistry
  • Organic Chemistry

Context:

  • Arnica chamissonis Less, sub-sp. foliosa and its variety incana are flowering plants known for their potential medicinal properties.
  • The isolation of novel compounds from plant sources is crucial for discovering new therapeutic agents.
  • Pseudoguaianolides are a class of sesquiterpene lactones with diverse biological activities.

Purpose:

  • To isolate and characterize new naturally occurring compounds from Arnica chamissonis.
  • To elucidate the chemical structures of these novel compounds using spectroscopic methods.
  • To contribute to the understanding of the chemical diversity within the Arnica genus.

Summary:

  • Two new pseudoguaianolides were successfully isolated from the flowers of Arnica chamissonis Less, sub-sp. foliosa and its variety incana.

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  • The structures of the isolated compounds were determined through comprehensive spectroscopic analyses.
  • The identified compounds are 4-O-acetyl-6-desoxychamissonolide and arnicolide G, a propionylic ester of 11,13-dihydrohelenalin.

    • Impact:

    • This research expands the known repertoire of pseudoguaianolides derived from Arnica species.
    • The identified compounds may serve as leads for future pharmacological investigations.
    • Establishes a foundation for further studies into the biosynthesis and potential applications of these Arnica-derived natural products.