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2020 ; 1220
(ä): 128741
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Azafluorene derivatives as inhibitors of SARS CoV-2 RdRp: Synthesis,
physicochemical, quantum chemical, modeling and molecular docking analysis
#MMPMID32834110
Venkateshan M
; Muthu M
; Suresh J
; Ranjith Kumar R
J Mol Struct
2020[Nov]; 1220
(ä): 128741
PMID32834110
show ga
The crystal structures of 2-(1H-indol-3-yl)-4-phenyl-5H-indeno [( Cheng et al.,
2007; Lee et al., 2003) 1,21,2-b]pyridine-3-carbonitrile (Ia) and
2-(1H-indol-3-yl)-4-(4-methoxyphenyl)-5H-indeno [( Cheng et al., 2007; Lee
et al., 2003) 1,21,2-b]pyridine-3-carbonitrile (Ib) were determined using single
crystal X-ray diffraction. Both the compounds belong to the triclinic system with
the P-1 space group. The azafluorene ring system in both the compounds is
effectively planar. The intermolecular interactions present in the compounds are
discussed using Hirshfeld surface analysis, QTAIM and NCI. Compound Ib formed a
strong interaction (-24.174 kJ/mol) with the solvent molecule. Both the compounds
were geometry optimized using DFT/B3LYP level of theory. The compound's drug-like
behaviors were studied using HOMO-LUMO analysis. The homology modeling of SARS
CoV-2 RdRp was done utilizing the PDB 6NUR_A as a template. The model showed
above 99% similarity with its preceder SARS CoV. The molecular docking analysis
of the synthesized compounds was carried out along with some suggested drugs for
COVID-19 and some phytochemicals. The docking results were then analyzed. The
binding free energy of the complexes were calculated using MM-PB(GB)SA and ADMET
properties of Ia and Ib were also predicted. Some suggestions are given from this
analysis.