4.7 Article

Synthesis and characterization of a novel Mannich base benzimidazole derivative to explore interaction with human serum albumin and antimicrobial property: experimental and theoretical approach

Journal

JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
Volume 41, Issue 18, Pages 8701-8714

Publisher

TAYLOR & FRANCIS INC
DOI: 10.1080/07391102.2022.2136757

Keywords

Mannich reaction; benzimidazole derivative; human serum albumin; antimicrobial activity; molecular docking; DFT

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The novel Mannich base benzimidazole derivative CB-1 was designed and synthesized. It was found to interact with human serum albumin (HSA) and showed potential in antimicrobial screening. Molecular docking and density functional theory analysis further confirmed the experimental results.
The novel Mannich base benzimidazole derivative (CB-1), 1-((1H-benzo[d]imidazol-1-yl)(3-chlorophenyl)methyl)-3-phenylurea) has been designed and synthesized by reacting benzimidazole, 3-chloro benzaldehyde, and N-Phenyl urea. CB-1 has been characterized by UV- Visible, FTIR, and 1H NMR. CB-1 was explored to study the interaction with the most abundant blood protein which involved in the role of transport of molecules (drugs), human serum albumin (HSA). Fluorescence results are evident for the presence of both dynamic and static quenching mechanisms in the binding of CB-1 to HSA. Antimicrobial screening were carried out against three bacteria and three fungi pathogens employing disc diffusion method. Molecular docking using AutoDock Vina tool further confirms the experimental binding interactions obtained from fluorescence. Density functional theory (DFT) with B3LYP/6-311Gthornthorn basis set was used for correlating theoretical data and obtaining optimized structures of CB-1 along with reactants with molecular electrostatic potential (MEP) map and HOMO!LUMO energy gap calculation. [GRAPHICS] .

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