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Sugar esters from Globularia orientalis.

Ihsan Caliş1, Hasan Kirmizibekmez, Deniz Tasdemir

  • 1Department of Pharmacognosy, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey. icalis@hacettepe.edu.tr

Zeitschrift Fur Naturforschung. C, Journal of Biosciences
|September 21, 2002
PubMed
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A new antioxidant sugar ester, globularitol, was isolated from Globularia orientalis. Its structure was confirmed using advanced spectroscopic and chemical methods, highlighting its potential antioxidant properties.

Area of Science:

  • Phytochemistry
  • Natural Product Chemistry
  • Organic Chemistry

Background:

  • Globularia orientalis is a plant species known for its potential medicinal properties.
  • Natural products are a rich source of novel compounds with diverse biological activities.
  • Antioxidants play a crucial role in combating oxidative stress and related diseases.

Purpose of the Study:

  • To isolate and characterize a new compound from the underground parts of Globularia orientalis.
  • To determine the chemical structure of the isolated compound.
  • To evaluate the antioxidant potential of the newly identified compound.

Main Methods:

  • Extraction of plant material using methanol.
  • Isolation of the target compound using chromatographic techniques.

Related Experiment Videos

  • Structure elucidation using 1D and 2D Nuclear Magnetic Resonance (NMR) spectroscopy.
  • Mass spectrometry (MS) analysis, including Electrospray Ionization (ESI-MS) and Fast Atom Bombardment (FAB-MS).
  • Confirmation of the structure through chemical derivatization and reactions.

    • Main Results:

    • A novel sugar ester, named globularitol (1), was successfully isolated from the methanolic extract.
    • The chemical structure of globularitol was elucidated as 6-O-feruloyl-beta-D-glucopyranosyl-(1-->6)-glucitol.
    • Spectroscopic and chemical analyses confirmed the proposed structure of globularitol.

    Conclusions:

    • Globularitol is a newly discovered antioxidant sugar ester from Globularia orientalis.
    • The detailed structural information provides a basis for further investigation into its biological activities.
    • This finding contributes to the understanding of the phytochemical constituents of Globularia species and their potential applications.