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New lanostane-type triterpenoids from Ganoderma applanatum.

Sang Hee Shim1, Jiyoung Ryu, Ju Sun Kim

  • 1Natural Products Research Institute and College of Pharmacy, Seoul National University, 28 Yeungun-dong, Chongno-gu, Seoul 110-460, Korea.

Journal of Natural Products
|July 24, 2004
PubMed
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Four new lanostane triterpenes were identified from Ganoderma applanatum. These compounds, isolated from mushroom extracts, expand our knowledge of fungal metabolites.

Area of Science:

  • Natural Product Chemistry
  • Mycology
  • Organic Chemistry

Background:

  • Ganoderma applanatum is a fungus known for its diverse bioactive compounds.
  • Triterpenes, a class of natural products, often exhibit significant pharmacological properties.
  • Lanostane-type triterpenes are structurally complex and found in various fungi.

Purpose of the Study:

  • To isolate and characterize novel lanostane-type triterpenes from Ganoderma applanatum.
  • To elucidate the chemical structures of these newly discovered compounds.
  • To contribute to the understanding of the chemical diversity within the Ganoderma genus.

Main Methods:

  • Extraction of metabolites from the fruiting bodies of Ganoderma applanatum using methanol.
  • Purification of compounds using chromatographic techniques.

Related Experiment Videos

  • Structure elucidation employing extensive spectroscopic analyses (e.g., NMR, MS).

    • Main Results:

    • Isolation of four new lanostane-type triterpenes.
    • Determination of the chemical structures: 3beta,7beta,20,23xi-tetrahydroxy-11,15-dioxolanosta-8-en-26-oic acid (1), 7beta,20,23xi-trihydroxy-3,11,15-trioxolanosta-8-en-26-oic acid (2), 7beta,23xi-dihydroxy-3,11,15-trioxolanosta-8,20E(22)-dien-26-oic acid (3), and 7beta-hydroxy-3,11,15,23-tetraoxolanosta-8,20E(22)-dien-26-oic acid methyl ester (4).
    • Confirmation of structures through comprehensive spectroscopic data interpretation.

    Conclusions:

    • The study successfully identified four previously unknown lanostane-type triterpenes from Ganoderma applanatum.
    • The findings expand the repertoire of known natural products from this fungal species.
    • This research provides valuable chemical data for future investigations into the biological activities of these triterpenes.