Antimicrobial and computational investigation of two 2,3‐dihydro‐1H‐inden‐1‐one derived fluorinated chalcone motifs

Abstract

AbstractIn this work, we report the anti‐microbial and computational study of two 2,3‐dihydro‐1H‐inden‐1‐one derived fluorinated chalcone scaffolds. The (E)‐2‐(4‐(trifluoromethyl)benzylidene)‐2,3‐dihydro‐1H‐inden‐1‐one (TFMBD‐1) and (E)‐2‐(4‐(trifluoromethoxy)benzylidene)‐2,3‐dihydro‐1H‐inden‐1‐one (TFMBD‐2) were synthesized by Claisen‐Schmidt reaction. The in‐depth structural analysis of optimized molecular structures, bond lengths and bond angles has been discussed by using density functional theory (DFT) with B3LYP/6‐311++G(d,p) basis set. The geometrical parameters, frontier molecular orbitals, global reactivity parameters, and MESP surfaces were all predicted using the same basis set on completely optimized geometries. Ionization potential, electron affinity, electronegativity, chemical hardness, global softness, global electrophilicity, and chemical potential were calculated using HOMO and LUMO energy values. Besides, the synthesized compounds were screened for their in‐vitro antibacterial and antifungal study. Antibacterial activity was screened against two Gram‐negative bacteria, E. coli and P. vulgaris, as well as against two Gram‐positive bacteria, S. aureus and B. subtilis, and antifungal activity was evaluated against A. niger and C. albicans. The TFMBD‐1 was revealed to be a more effective antibacterial and antifungal agent than TFMBD‐2.