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Coumarin-based Oximes Exert Monoamine Oxidase Inhibitory Activity
Qudus Kolawole1, Veera L D Badisa2, Musiliyu A Musa3
1Department of Biological Sciences, Florida A&M University, Tallahassee, FL, U.S.A.
Anticancer Research
|January 30, 2026
Summary
Researchers explored coumarin derivatives as potential treatments for neurodegenerative disorders. Compound 7f demonstrated significant monoamine oxidase inhibition and neuroprotective properties, indicating its promise as a therapeutic scaffold.
Area of Science:
- Medicinal Chemistry
- Pharmacology
- Neuroscience
Background:
- Coumarins are versatile compounds with significant pharmacological potential.
- The coumarin scaffold is a promising basis for developing monoamine oxidase inhibitors (MAOIs).
- MAOIs are crucial for treating neurodegenerative disorders like Parkinson's and Alzheimer's disease.
Purpose of the Study:
- To synthesize and evaluate 3-acylcoumarin-oxime derivatives for their cytotoxic and MAO inhibitory activities.
- To identify novel compounds with potential therapeutic applications for neurodegenerative conditions.
Main Methods:
- Cytotoxicity was assessed using crystal violet dye binding assays.
- Monoamine oxidase (MAO) inhibition was measured using the MAO-GloTM assay kit.
- Free radical scavenging activity was evaluated using DPPH and hydrogen peroxide assays.
Main Results:
- Most synthesized compounds exhibited non-cytotoxic profiles against Neuroblastoma 2A (N2a) cells.
- Compound 7f, featuring a diethylamino group at the C-7 position, displayed potent MAO-A and MAO-B inhibition (IC50 values of 1.27±0.66 μM and 4.65±0.52 μM, respectively).
- Compound 7f also demonstrated neuroprotective effects in H2O2-treated N2a cells and free radical neutralizing capabilities.
Conclusions:
- The 7-diethylamino-substituted 3-acylcoumarin-oxime derivative (compound 7f) is a promising scaffold for novel MAOI drug development.
- Compound 7f exhibits potential for treating neurodegenerative disorders due to its MAO inhibitory and neuroprotective actions.
![Solid-phase Synthesis of [4.4] Spirocyclic Oximes](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F58508.jpg&w=3840&q=50)
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