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Triterpene glycosides from Schefflera octophylla.

T V Sung1, W Steglich, G Adam

  • 1Institute of Natural Products Chemistry, National Research Centre of Vietnam, Nghia do, Tu liem, Hanoi.

Phytochemistry
|January 1, 1991
PubMed
Summary

Three novel triterpene glycosides were isolated from Schefflera octophylla leaves, with two compounds identified for the first time in the plant kingdom. These findings expand our knowledge of phytochemistry and natural product discovery.

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Area of Science:

  • Phytochemistry
  • Natural Products Chemistry
  • Organic Chemistry

Background:

  • Schefflera octophylla is a plant species with potential for novel compound discovery.
  • Triterpene glycosides are a class of natural products with diverse biological activities.
  • Previous phytochemical investigations of Schefflera species have identified various compounds.

Purpose of the Study:

  • To isolate and characterize triterpene glycosides from the leaves of Schefflera octophylla.
  • To elucidate the chemical structures of the isolated compounds using spectroscopic and chemical methods.
  • To identify compounds previously undiscovered in the plant kingdom.

Main Methods:

  • Extraction of plant material (Schefflera octophylla leaves).
  • Isolation of compounds using chromatographic techniques.

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  • Structure elucidation via spectroscopic data (NMR, MS) and chemical transformations.

    • Main Results:

    • Three triterpene glycosides were isolated, including 3-epi-betulinic acid.
    • The structures of the glycosides were determined as 28-O-[alpha-L-rhamnopyranosyl(1----4)-O-beta-D-glucopyranosyl(1----6)-beta-D-glucopyranosides of 3 alpha-hydroxy-lup-20(29)-ene-23,28-dioic acid, 3 alpha,11 alpha-dihydroxy-lup20(29)-ene-23,28-dioic acid, and 3-epi-betulinic acid.
    • Two of the isolated compounds represent new discoveries within the plant kingdom.

    Conclusions:

    • The phytochemical analysis of Schefflera octophylla yielded three triterpene glycosides.
    • The structural determination confirmed the identity of these compounds, including two novel ones.
    • This study contributes to the understanding of Schefflera octophylla's chemical constituents and expands the known diversity of triterpene glycosides.