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Antiplasmodial compounds from Cochlospermum tinctorium
Nicolai Zederkopff Ballin1, Maminata Traore, Halidou Tinto
1Department of Medicinal Chemistry, The Royal Danish School of Pharmacy, Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark.
Journal of Natural Products
|September 28, 2002
Summary
Researchers isolated five compounds from Cochlospermum tinctorium roots, including a novel 1-hydroxyalkan-3-one. One compound, 3-O-E-p-coumaroylalphitolic acid, showed significant antiplasmodial activity with an IC50 of 2.3 microM.
Area of Science:
- Phytochemistry
- Natural Products Chemistry
- Medicinal Chemistry
Background:
- Cochlospermum tinctorium is a plant used in traditional medicine.
- Plant-derived compounds are a rich source of potential therapeutic agents.
Purpose of the Study:
- To isolate and characterize compounds from the ethanol extract of Cochlospermum tinctorium roots.
- To evaluate the antiplasmodial activity of the isolated compounds.
Main Methods:
- Fractionation of an ethanol extract of Cochlospermum tinctorium roots.
- Structure elucidation of isolated compounds using spectroscopic methods.
- Determination of antiplasmodial activity using IC50 assays.
Main Results:
- Five compounds were isolated: 3-O-E-p-coumaroylalphitolic acid (1), cochloxanthin (2), dihydrocochloxanthin (3), alphitolic acid (4), and 1-hydroxytetradecan-3-one (5).
- Compound 5 represents the first 1-hydroxyalkan-3-one isolated from plant material via gentle workup.
- 3-O-E-p-coumaroylalphitolic acid exhibited potent antiplasmodial activity with an IC50 value of 2.3 microM.
Conclusions:
- The study successfully isolated and identified five compounds from Cochlospermum tinctorium roots.
- 3-O-E-p-coumaroylalphitolic acid demonstrates significant potential as an antiplasmodial agent.
- The discovery of a 1-hydroxyalkan-3-one from plant sources opens new avenues in natural product chemistry.