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Antimicrobial Compounds from Drypetes staudtii.

David Grace1, Madiha S Khan1, Kenneth Friesen1

  • 1Department of Chemistry, Richardson College for the Environmental and Science Complex, The University of Winnipeg, 599 Portage Avenue, Winnipeg, MB, R3B 2G3, Canada.

Chemistry & Biodiversity
|June 12, 2016
PubMed
Summary
This summary is machine-generated.

Phytochemical analysis of Drypetes staudtii yielded two new compounds and seven known natural products. All isolates demonstrated significant antibacterial activity against Gram-positive and Gram-negative bacteria.

Keywords:
Antimicrobial activityCandida albicansDrypetes staudtiiGram-negative bacteriaGram-positive bacteriaTerpenoids

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Area of Science:

  • Natural Product Chemistry
  • Pharmacognosy
  • Microbiology

Background:

  • Drypetes staudtii is a plant species with potential medicinal properties.
  • Phytochemical investigations are crucial for discovering novel bioactive compounds.
  • Antimicrobial resistance necessitates the search for new therapeutic agents.

Purpose of the Study:

  • To isolate and characterize new and known compounds from Drypetes staudtii.
  • To evaluate the antimicrobial and antifungal activities of the isolated compounds.

Main Methods:

  • Phytochemical investigation of the methanol extract of Drypetes staudtii.
  • Structure elucidation using Nuclear Magnetic Resonance (NMR) and mass spectrometry.
  • Determination of minimum inhibitory concentration (MIC) for antibacterial and antifungal assays.

Main Results:

  • Two new compounds, 4,5-(methylenedioxy)-o-coumaroylputrescine (1) and 4,5-(methylenedioxy)-o-coumaroyl-4'-N-methylputrescine (2), were identified.
  • Seven known compounds, including 4α-hydroxyeremophila-1,9-diene-3,8-dione (3), drypemolundein B (4), friedelan-3β-ol (5), erythrodiol (6), ursolic acid (7), p-coumaric acid (8), and β-sitosterol (9), were isolated.
  • All nine isolates exhibited antibacterial activity against Gram-positive and Gram-negative bacteria (MIC: 8–128 μg/ml).
  • Compounds 1 and 2 showed moderate antifungal activity against Candida albicans (MIC: 32 μg/ml).

Conclusions:

  • Drypetes staudtii is a source of novel bioactive compounds with promising antimicrobial properties.
  • The identified compounds, particularly the new coumaroylputrescines, warrant further investigation for therapeutic potential.
  • This study contributes to the understanding of the phytochemical diversity and medicinal applications of Drypetes species.