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Recent Developments on Coumarin Hybrids as Antimicrobial Agents.
Sijongesonke Peter1, Lunga Linda Sibali2
1Department of Chemical and Earth Sciences, Faculty of Science and Agriculture, University of Fort Hare, Alice 5700, South Africa.
Antibiotics (Basel, Switzerland)
|December 30, 2025
Summary
Coumarin hybrid compounds show promising antimicrobial activity against resistant microbes like S. aureus and C. albicans. Structural modifications, such as halogenation, significantly enhance their efficacy, guiding future drug development.
Area of Science:
- Medicinal Chemistry
- Pharmacology
- Drug Discovery
Background:
- Rising antimicrobial resistance (AMR) threatens global health, necessitating novel therapeutic agents.
- Coumarin, a naturally occurring compound, offers favorable physicochemical properties and diverse biological activities, making it a promising scaffold for drug development.
- Hybridization of coumarin with other pharmacophores is a strategic approach to enhance antimicrobial efficacy and overcome resistance.
Purpose of the Study:
- To review and synthesize current literature on coumarin-based hybrid compounds with antimicrobial properties.
- To analyze the structure-activity relationships (SAR) of these hybrids to identify key structural features for enhanced antimicrobial activity.
- To provide insights for future research and development of coumarin-derived drugs for treating microbial infections.
Main Methods:
- Comprehensive literature search of open-access articles on coumarin hybrid drugs published between 2024 and 2025.
- Utilized academic search engines including Google, Google Scholar, ScienceDirect, and Scopus.
- Focused on studies reporting antimicrobial activity and structure-activity relationship data.
Main Results:
- Coumarin hybrids demonstrate significant antimicrobial activity, notably against Staphylococcus aureus and Candida albicans.
- Structure-activity relationship analysis indicates that specific functional groups (e.g., halogens, bulky aromatics, nitro, hydroxyl) enhance the binding affinity of coumarin hybrids to microbial targets.
- These modifications influence the interaction with amino acid residues, contributing to improved efficacy.
Conclusions:
- Coumarin-based hybrid compounds represent a promising class of antimicrobials with tunable activity based on structural modifications.
- Further pre-clinical and clinical investigations are warranted to fully evaluate the therapeutic potential of these novel agents.
- The SAR findings provide a foundation for rational drug design of next-generation coumarin-derived antimicrobials.
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