Unveiling the Anti-tubercular Properties of Biscoumarins, through Biological Evaluation and Docking Studies

Abstract

Background: Biscoumarin scaffolds are known for their promising pharmacological properties. These compounds have not been studied for their activity against tuberculosis strains. Objective: Unveil the antitubercular properties of biscoumarin scaffolds. Methods: Biscoumarin derivatives (3a-3l) were synthesized using lemon juice as a catalyst and were investigated for their in-vitro anti-tubercular activity against H37Rv strain of Mycobacterium tuberculosis using Microplate Alamar Blue Assay Method (MABA). Their binding interaction was investigated by Molecular Docking Studies using InhA with PDB-ID: 2NSD as target receptors in H37Rv strain of Mycobacterium tuberculosis. These derivatives (3a-3l) were subjected to neutrophil function test. Results: The results revealed that compounds 3b, 3c, 3d, 3f, 3i, 3j showed excellent activity with MIC 1.6 µg/mL. Molecular docking interactions for their antitubercular activity proved that the derivatives (3a-3l) can easily bind into the pockets of InhA enzyme. Neutrophil function test signified that they exhibit moderate neutrophil functions assuring that they do not harm the functioning of Neutrophils. Conclusion: These studies have awakened the property of Biscoumarins as promising anti-tubercular scaffolds.

Antituberculosis Propensity of Synthetic Biscoumarin Derivatives: An In Silico and In Vitro Approach

“…However, one of the compounds (f) showed poor activity against Enterococcus faecalis in 64-128 µg/mL [53]. Therefore, as evident from our observations, it is noteworthy that the biscoumarin compounds synthesized in general and compounds f and d in particular, like standard anti-tuberculosis drugs INH, RIF, and PZA, are specifically active against M. tuberculosis [ 55].…”