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Pterosins from Pteris multifida.

Dan-Wei Ouyang1, Xiang Ni, Hai-Yan Xu

  • 1Department of Chinese Traditional Medicine, Shanghai Institute of Pharmaceutical Industry, Shanghai, P R China.

Planta Medica
|May 21, 2010
PubMed
Summary
This summary is machine-generated.

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Researchers discovered two new compounds, (2R)-pterosin P and dehydropterosin B, from Pteris multifida. Some isolated compounds exhibited significant cytotoxicity against human pancreatic and lung cancer cell lines.

Area of Science:

  • Natural Product Chemistry
  • Phytochemistry
  • Medicinal Chemistry

Background:

  • Pteris multifida Poir. is a plant species known for its diverse chemical constituents.
  • Sesquiterpenoids are a class of natural products with a wide range of biological activities.
  • Identifying novel compounds with potential therapeutic applications is crucial for drug discovery.

Purpose of the Study:

  • To isolate and characterize new chemical entities from Pteris multifida.
  • To evaluate the cytotoxic potential of isolated compounds against cancer cell lines.

Main Methods:

  • Isolation of compounds using chromatographic techniques.
  • Structure elucidation using Nuclear Magnetic Resonance (NMR) spectroscopy, Circular Dichroism (CD) spectroscopy, and single-crystal X-ray diffraction.

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  • Cytotoxicity assays using PANC-1 and NCI-H446 cell lines.

    • Main Results:

    • A new C14 pterosin sesquiterpenoid, (2R)-pterosin P (1), and a new natural product, dehydropterosin B (3), were identified.
    • Compounds 1 and 2 were isolated as enantiomers.
    • Compounds 3, 5, and 6 demonstrated potent cytotoxicity against human pancreatic cancer (PANC-1) and small-cell lung cancer (NCI-H446) cells, with IC50 values ranging from 4.27–14.63 µM.

    Conclusions:

    • The study successfully identified novel sesquiterpenoids from Pteris multifida.
    • (2R)-pterosin P's structure was definitively confirmed through multiple spectroscopic and crystallographic methods.
    • Dehydropterosin B and other isolated compounds show promising cytotoxic activity, warranting further investigation for anticancer drug development.