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Modified labdane diterpenes from Amphiachyris amoena

M J Pcolinski1, D P O'Mathúna, R W Doskotch

  • 1Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, Ohio State University, Columbus 43210-1291, USA.

Journal of Natural Products
|February 1, 1995
PubMed
Summary

Two novel labdane diterpenes, amoenolide L and amoenolide M, were identified from Amphiachyris amoena. Their structures were elucidated using advanced spectral analysis techniques.

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Area of Science:

  • Natural Product Chemistry
  • Organic Chemistry
  • Phytochemistry

Background:

  • Amphiachyris amoena is a plant species known for potential bioactive compounds.
  • Diterpenes are a class of organic compounds with diverse biological activities.
  • Previous research may have explored other compounds from this plant or related species.

Purpose of the Study:

  • To isolate and characterize new labdane diterpenes from Amphiachyris amoena.
  • To determine the stereochemical structures of the isolated compounds.
  • To investigate the properties of their acetate derivatives.

Main Methods:

  • Isolation of compounds from the above-ground parts of Amphiachyris amoena.
  • Structure elucidation using ultraviolet (UV), infrared (IR), fast atom bombardment mass spectrometry (FABMS), and nuclear magnetic resonance (NMR) spectroscopy (1D and 2D).

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  • Preparation and characterization of acetate derivatives.

    • Main Results:

    • Two new modified labdane diterpenes, designated amoenolide L [1] and amoenolide M [2], were successfully isolated.
    • Both compounds feature a 3-(p-hydroxyphenyl)propionate ester unit.
    • Comprehensive spectral data confirmed their unique stereochemical structures.

    Conclusions:

    • The study successfully identified and characterized two novel labdane diterpenes from Amphiachyris amoena.
    • The findings contribute to the understanding of the chemical diversity of diterpenoids in this plant species.
    • Further research may explore the biological activities of these newly discovered compounds.