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Diterpenoids from Isodon adenantha.

Bei Jiang1, Hui Yang, Ma-Lin Li

  • 1State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Academia Sinica, Kunming 650204, Republic of China.

Journal of Natural Products
|August 24, 2002
PubMed
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Eleven new diterpenoids were isolated from Isodon adenantha. Some compounds exhibited significant inhibitory activity against K562 cells, indicating potential therapeutic applications.

Area of Science:

  • Natural Products Chemistry
  • Pharmacology

Background:

  • Isodon adenantha is a plant source of bioactive compounds.
  • Diterpenoids are a class of natural products with diverse biological activities.

Purpose of the Study:

  • To isolate and characterize new diterpenoids from Isodon adenantha.
  • To evaluate the biological activity of isolated compounds against K562 cells.

Main Methods:

  • Isolation of compounds using chromatographic techniques.
  • Structure elucidation using spectral methods (NMR, MS) and X-ray crystallography.
  • In vitro evaluation of cytotoxicity against K562 cells.

Main Results:

  • Eleven new diterpenoids, adenanthins B-L (1-11), were identified.

Related Experiment Videos

  • Five known analogues (12-16) were also isolated.
  • Compounds 2, 5, and 14 demonstrated significant inhibitory activity against K562 cells (IC50 < 4.0 microg/mL).

    • Conclusions:

    • Isodon adenantha is a rich source of structurally diverse diterpenoids.
    • Compounds 2, 5, and 14 possess potent anti-cancer properties against K562 cells.
    • Further investigation into these compounds may lead to novel therapeutic agents.