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New antimicrobial flavonoids and chalcone from Colutea armata
Farah Inamullah1, Itrat Fatima2, Sadia Khan1
1Department of Applied Chemistry, University of Karachi, Karachi, 75270, Pakistan.
Archives of Pharmacal Research
|May 17, 2017
Summary
Two new flavonoids, Colucins A and B, and a chalcone derivative, colucone, were isolated from Colutea armata. These compounds, along with others, exhibited significant antimicrobial activities against various bacterial strains.
Area of Science:
- Phytochemistry
- Natural Products Chemistry
- Pharmacognosy
Background:
- Colutea armata is a plant species with potential medicinal properties.
- Flavonoids and chalcones are classes of natural products known for their biological activities.
Purpose of the Study:
- To isolate and characterize new compounds from Colutea armata.
- To evaluate the antimicrobial potential of the isolated compounds.
Main Methods:
- Extraction of the CHCl3-soluble fraction of the whole plant.
- Structure elucidation using spectroscopic techniques (MS, 2D-NMR).
- Antimicrobial activity testing against Gram-positive and Gram-negative bacteria.
Main Results:
- Isolation of two new flavonoids (Colucins A and B) and a new chalcone derivative (colucone).
- Identification of known compounds: luteolin, luteolin 7-O-β-D-glucoside, isoliquiritigenin, trans-caffeic acid, and stigmasterol.
- Colucins A and B demonstrated significant antimicrobial activity, while colucone showed moderate activity.
Conclusions:
- Colutea armata is a source of novel flavonoids and chalcones.
- The isolated compounds possess notable antimicrobial properties, warranting further investigation.
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