Exploring the Potential of Coumarin as a Potent Antitubercular Agent

Area of Science:

• Medicinal Chemistry
• Pharmacology
• Drug Discovery

Background:

• Tuberculosis (TB) remains a leading infectious disease, with rising multidrug-resistant (MDR-TB) and extensively drug-resistant (XDR-TB) strains necessitating novel therapies.
• Coumarins, a class of naturally occurring compounds, possess diverse pharmacological properties and are being explored for their anti-TB potential due to their versatile structures.

Purpose of the Study:

• To systematically review the efficacy of coumarin derivatives against Mycobacterium tuberculosis.
• To identify structural features of coumarins that correlate with enhanced anti-TB activity.

Main Methods:

• A systematic literature search was performed across multiple databases (Scopus, Web of Science, PubMed, etc.) for studies on coumarin derivatives and TB.
• Inclusion criteria focused on studies with structural characterization, drug-likeness, ADME-Tox compliance, and in vitro/in vivo/clinical data against M. tuberculosis.
• Exclusion criteria targeted unstable, toxic, poorly soluble compounds, and non-compliant study models or patients.

Main Results:

• Natural coumarins showed moderate to weak activity, while semi-synthetic modifications offered some improvement.
• Synthetic coumarin conjugates, particularly coumarin-oxime, pyrimidine, and thiazoline derivatives, demonstrated potent in vitro activity, surpassing isoniazid.
• Key structural features associated with enhanced efficacy include oxime groups, triazole linkages, and halogen or methyl substitutions.

Conclusions:

• Coumarin derivatives represent a valuable scaffold for developing novel anti-TB agents.
• Optimized synthetic coumarin conjugates show significant promise for combating MDR-TB and XDR-TB.
• Further in vivo and clinical validation is required to fully realize the therapeutic potential of these compounds.