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Bioactive triterpenes from Diospyros blancoi.

Consolacion Y Ragasa1, Marc Rhyan Anthony Puno, Josephine Marie Angeline P Sengson

  • 1Chemistry Department, Center for Natural Sciences and Ecological Research, De La Salle University, 1004 Manila, Philippines. ragasac@dlsu.edu.ph

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|September 5, 2009
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The ethyl acetate extract of Diospyros blancoi leaves yielded compounds with antimicrobial and pain-relief properties. These natural compounds show potential for developing new treatments against various bacterial and fungal infections.

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Area of Science:

  • Phytochemistry
  • Pharmacology

Background:

  • Diospyros blancoi is a plant species with potential medicinal properties.
  • Natural products are a rich source of bioactive compounds.

Purpose of the Study:

  • To isolate and characterize compounds from Diospyros blancoi leaves.
  • To evaluate the antimicrobial, analgesic, and anti-inflammatory activities of the isolated compounds.

Main Methods:

  • Extraction of Diospyros blancoi leaves using ethyl acetate.
  • Structure elucidation of isolated compounds using 1D and 2D NMR spectroscopy.
  • Antimicrobial activity testing against various pathogens.
  • Assessment of analgesic and anti-inflammatory effects.

Main Results:

  • Isoarborinol methyl ether (1), a mixture of alpha- and beta-amyrin palmitates/palmitoleates (2), and squalene were isolated.
  • Compounds 1 and 2 demonstrated antimicrobial activity against Escherichia coli, Pseudomonas aeruginosa, Candida albicans, Staphylococcus aureus, and Trichophyton mentagrophytes.
  • Compound 2 exhibited significant analgesic and anti-inflammatory activities.

Conclusions:

  • Diospyros blancoi leaves contain bioactive compounds with significant pharmacological potential.
  • The isolated compounds, particularly compound 2, warrant further investigation for therapeutic applications.