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Facile Synthesis of Novel Coumarin Derivatives, Antimicrobial Analysis, Enzyme Assay, Docking Study, ADMET Prediction and Toxicity Study.


ABSTRACT: The work reports the synthesis under solvent-free condition using the ionic liquid [Et?NH][HSO?] as a catalyst of fifteen novel 3-((dicyclohexylamino)(substituted phenyl/heteryl)-methyl)-4-hydroxy-2H-chromen-2-onederivatives 4a-o as potential antimicrobial agents. The structures of the synthesized compounds were confirmed by IR, ¹H-NMR, 13C-NMR, mass spectral studies and elemental analyses. All the synthesized compounds were evaluated for their in vitro antifungal and antibacterial activity. The compound 4k bearing 4-hydroxy-3-ethoxy group on the phenyl ring was found to be the most active antifungal agent. The compound 4e bearing a 2,4-difluoro group on the phenyl ring was found to be the most active antibacterial agent. The mode of action of the most promising antifungal compound 4k was established by an ergosterol extraction and quantitation assay. From the assay it was found that 4k acts by inhibition of ergosterol biosynthesis in C. albicans. Molecular docking studies revealed a highly spontaneous binding ability of the tested compounds to the active site of lanosterol 14?-demethylase, which suggests that the tested compounds inhibit the synthesis of this enzyme. The synthesized compounds were analyzed for in silico ADMET properties to establish oral drug like behavior and showed satisfactory results. To establish the antimicrobial selectivity and safety, the most active compounds 4e and 4k were further tested for cytotoxicity against human cancer cell line HeLa and were found to be non-cytotoxic in nature. An in vivo acute oral toxicity study was also performed for the most active compounds 4e and 4k and results indicated that the compounds are non-toxic.

SUBMITTER: Tiwari SV 

PROVIDER: S-EPMC6152127 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature

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Facile Synthesis of Novel Coumarin Derivatives, Antimicrobial Analysis, Enzyme Assay, Docking Study, ADMET Prediction and Toxicity Study.

Tiwari Shailee V SV   Seijas Julio A JA   Vazquez-Tato Maria Pilar MP   Sarkate Aniket P AP   Karnik Kshipra S KS   Nikalje Anna Pratima G APG  

Molecules (Basel, Switzerland) 20170713 7


The work reports the synthesis under solvent-free condition using the ionic liquid [Et₃NH][HSO₄] as a catalyst of fifteen novel 3-((dicyclohexylamino)(substituted phenyl/heteryl)-methyl)-4-hydroxy-2<i>H</i>-chromen-2-onederivatives <b>4a</b>-<b>o</b> as potential antimicrobial agents. The structures of the synthesized compounds were confirmed by IR, ¹H-NMR, <sup>13</sup>C-NMR, mass spectral studies and elemental analyses. All the synthesized compounds were evaluated for their <i>in vitro</i> ant  ...[more]

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