Exploring the Potential of Coumarins against the Flavoenzyme DprE1 for Anti-TB Activity: Insights from Molecular Docking, In silico Druglikeness, ADMET, MD Simulations, MMGBSA, and DFT Studies Swaranjali Pawar, Rutika Patil, Somdatta Chaudhari, Kishan Haval, Deepak Mahuli, et al. Current Enzyme Inhibition, 2026 Introduction:: Tuberculosis (TB), also known as the "white death", is a highly infectious and deadly disease caused by Mycobacterium tuberculosis. This study employed highthroughput computational screening to identify potential inhibitors of DprE1. At the molecular level, DprE1 emerges as a critical player in the battle against TB. Methods:: Coumarins from the Zinc15 database were screened, and docking revealed ZINC000002148091, ZINC000002149141, ZINC000002150525, and ZINC000002151830 as top hits based on strong binding affinity against DprE1 (PDB: 4P8L). Validation was performed through re-docking, confirming the reliability of the performed protocol. Results:: The hits exhibited satisfactory druglikeness and pharmacokinetic profiles and proved nonmutagenic in the AMES test. Molecular dynamics (MD) simulations showed stable proteinligand interactions over 100 ns, with compounds consistently occupying the binding pocket, as observed in the docking study. MMGBSA analysis indicated tight binding. Density functional theory (DFT) calculations provided insight into electronic structure and reactivity. discussion: Overall, this comprehensive computational approach identified promising coumarin- based hits against DprE1, offering the potential for TB treatment. It underscores the need for further exploration through in vitro and in vivo studies to validate their efficacy and safety. conclusion: Computational analysis indicated that coumarin-based compounds can be explored for the development of potential DprE1 inhibitors. Targeting DprE1 can be an excellent strategy for the development of antitubercular compounds.
Synthesis, Anticancer Evaluation, and Molecular Docking of Triazolylmethyl-Dihydroquinazolinyl Benzoate Derivatives as Potential PARP-1 Inhibitors Shyam V. Londhe, Pornima N. Gund, Shriram B. Pawar, Somesh S. Salunke, Somdatta Chaudhari, et al. Chemistry and Biodiversity, 2026 Quinazolinone derivatives have emerged as promising scaffolds in medicinal chemistry due to their broad spectrum of biological activities, including anticancer potential. Incorporation of triazole rings through click chemistry has further boosted the pharmacological relevance of such compounds, due to the triazole's stability, bioisosterism, and ability to engage in key interactions with biological targets. Motivated by these properties, a library of 24 triazolylmethyl‐dihydroquinazolinyl benzoate (TDB) derivatives ( 7a – x ) was synthesized using a click chemistry strategy, starting from anthranilamide and phthalic anhydride. The structures of the synthesized compounds were established through IR, 1 H NMR, 13 C NMR, and HRMS spectral analysis. The anticancer potential of all derivatives was evaluated by using SRB assay, with compounds 7j and 7q displaying notable activity, with GI 50 values of 22 and 48 µg/mL, respectively. In addition, compounds 7a , 7e , 7f , 7l , 7u , 7v , and 7x displayed moderate activity, with GI 50 values ranging from 58 to 77 µg/mL. In addition, molecular docking studies were performed using poly(ADP‐ribose) polymerase‐1 as the target enzyme, and the results confirmed that the TDB derivatives exhibited strong binding affinity. Furthermore, molecular dynamics simulations were conducted to evaluate the stability of the docked complexes, specifically for compounds 7j and 7q , which confirmed that the TDB derivatives formed stable interactions with poly(ADP‐ribose) polymerase‐1.
Design, Synthesis, and Evaluation of Triazolyl Quinoline Derivatives as Potential Antimalarial Agents Amruta N. Bhagat, Rajubai D. Bakale, Shyam V. Londhe, Shriram B. Pawar, Somesh S. Salunke, et al. Chemistry and Biodiversity, 2025 The present study aims to develop novel antimalarial and antimicrobial agents by synthesizing a series of 25 triazolyl quinoline carboxylate derivatives via azide–alkyne 1,3‐dipolar cycloaddition, starting from isatin and p ‐fluoroacetophenone. Structural characterization was performed using IR, 1 H NMR, 13 C NMR, and mass spectrometry. The synthesized hybrids were evaluated for their in vitro antimalarial activity against the chloroquine‐sensitive Plasmodium falciparum 3D7 strain. Among them, compounds 6e , 6h , and 6i exhibited notable potency, with IC 50 values ranging from 1.364 to 1.518 µM, underscoring their potential as promising antimalarial candidates. Furthermore, compounds 6g , 6h , 6m , and 8a demonstrated broad‐spectrum antimicrobial activity, while 6d , 6e , 6h , 8c , 8h , and 8k showed strong antioxidant potential through effective OH and DPPH radical scavenging. In silico ADME profiling using SwissADME and DeepPK revealed favorable pharmacokinetic properties and compliance with Lipinski's rule of five, suggesting good oral bioavailability. Density functional theory (DFT) calculations provided insights into the electronic structures, and molecular docking studies confirmed strong binding interactions with P. falciparum falcipain‐2 protease. Collectively, these findings highlight the therapeutic promise of this compound class as multifunctional agents targeting malaria and microbial infections.