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Tirucallane triterpenoids from Cornus walteri.

Ki Hyun Kim1, Sang Un Choi, Young Choong Kim

  • 1Natural Products Laboratory, School of Pharmacy, Sungkyunkwan University, Suwon 440-746, Korea.

Journal of Natural Products
|December 25, 2010
PubMed
Summary
This summary is machine-generated.

Twelve new tirucallane triterpenoids, cornusalterins A-L, were identified from Cornus walteri. Compounds 12 and 13 showed significant cytotoxic activity against various cancer cell lines.

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Area of Science:

  • Natural Products Chemistry
  • Organic Chemistry
  • Pharmacognosy

Background:

  • Cornus walteri stems and bark are sources of bioactive compounds.
  • Tirucallane triterpenoids are a class of natural products with diverse biological activities.

Purpose of the Study:

  • To isolate and characterize new tirucallane triterpenoids from Cornus walteri.
  • To evaluate the cytotoxic potential of isolated compounds against cancer cell lines.

Main Methods:

  • Extraction of Cornus walteri stems and bark using methanol.
  • Structure elucidation of isolated compounds using 1D and 2D NMR spectroscopy.
  • Cytotoxicity assays against A549, SK-OV-3, SK-MEL-2, and XF498 cell lines.

Main Results:

  • Isolation of twelve new tirucallane triterpenoids (cornusalterins A-L) and two known compounds.
  • Compounds 12 and 13, featuring a tetrahydrofuran ring, demonstrated significant cytotoxic effects.
  • Structural determination confirmed the identity of novel compounds through advanced spectroscopic analysis.

Conclusions:

  • Cornus walteri is a rich source of structurally diverse tirucallane triterpenoids.
  • Cornusalterins 12 and 13 possess promising cytotoxic properties warranting further investigation for anticancer drug development.