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[Iridoids from Verbascum sinuatum.].

G Falsone1, M D Laryea, A E Crea

  • 1Institut für Organische Chemie der Universität Düsseldorf, Düsseldorf, Bundesrepublik Deutschland.

Planta Medica
|March 1, 1982
PubMed
Summary
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Researchers isolated harpagoside and a novel diacyl-iridoid-diglycoside from Verbascum sinuatum. The new compound, 6-O-(2",3"-Di-O-acyl)-alpha-L-rhamnopyranosylcatalpol, was structurally identified using spectroscopic and chemical methods.

Area of Science:

  • Phytochemistry
  • Natural Product Chemistry
  • Organic Chemistry

Context:

  • Verbascum sinuatum is a plant species known to produce various bioactive compounds.
  • The underareal parts of plants are often rich sources of secondary metabolites.
  • Previous research has identified iridoid glycosides in the Verbascum genus.

Purpose:

  • To isolate and characterize novel compounds from Verbascum sinuatum.
  • To elucidate the chemical structure of a new diacyl-iridoid-diglycoside.
  • To contribute to the understanding of the phytochemical profile of Verbascum sinuatum.

Summary:

  • Harpagoside and a new diacyl-iridoid-diglycoside were isolated from the underareal part of Verbascum sinuatum.
  • The structure of the new compound was determined to be 6-O-(2",3"-Di-O-acyl)-alpha-L-rhamnopyranosylcatalpol.

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  • Structural elucidation was achieved through comprehensive analysis including 1H-NMR, 13C-NMR, mass spectrometry, and chemical degradation.

    • Impact:

    • Identifies a new natural product, expanding the known chemical diversity of iridoid glycosides.
    • Provides detailed structural information for the newly discovered compound, enabling further biological activity studies.
    • Enhances the phytochemical database of Verbascum species, potentially aiding in the discovery of new therapeutic agents.