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Docking study, synthesis and antimicrobial evaluation of some novel 4-anilinoquinazoline derivatives.

ABSTRACT: A series of novel 4-anilinoquinazoline derivatives were designed and synthesized from benzoic acid through ring closure, chlorination or nucleophilic substitution. The structures of compounds were characterized by IR, 1H-NMR and mass spectroscopy. All synthesized derivatives were screened for their antimicrobial activities against Gram-positive (Staphylococcus aurous, Bacillus subtilis, Listeria monocitogenes) and Gram-negative (Escherichia coli, Pseudomonas aeruginosa, Salmonella entritidis) bacteria and also for antifungal activities against Candida albicans using the conventional micro dilution method. Most of the compounds have shown good antibacterial activities, especially compound 4c having highest activities against E. coli at 32 ?g/mL concentration while the tested compounds did not exhibited remarkable antifungal activities. The potential DNA gyrase inhibitory activity of these compounds was investigated in silico using molecular docking simulation method. All compounds showed good results especially compound 4c which showed the lowest ?Gbind results (-8.16 Kcal/mol).

SUBMITTER: Nasab RR

PROVIDER: S-EPMC5615873 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature

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Docking study, synthesis and antimicrobial evaluation of some novel 4-anilinoquinazoline derivatives.

Nasab Rezvan Rezaee RR Hassanzadeh Farshid F Khodarahmi Ghadam Ali GA Rostami Mahboubeh M Mirzaei Mahmoud M Jahanian-Najafabadi Ali A Mansourian Mahboubeh M

Research in pharmaceutical sciences 20171001 5

A series of novel 4-anilinoquinazoline derivatives were designed and synthesized from benzoic acid through ring closure, chlorination or nucleophilic substitution. The structures of compounds were characterized by IR, 1H-NMR and mass spectroscopy. All synthesized derivatives were screened for their antimicrobial activities against Gram-positive (Staphylococcus aurous, Bacillus subtilis, Listeria monocitogenes) and Gram-negative (Escherichia coli, Pseudom ...[more]

PMID: 28974981

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Project description:Background:In search of effective antimicrobial and cytotoxic agents, a series of indole hybridized diazenyl derivatives (DS-1 to DS-21) was efficiently prepared by condensation of diazotized p-aminoacetophenone with indole or nitroindole followed by reaction with different aromatic/heteroaromatic amines of biological significance. The synthesized derivatives were characterized by various spectroscopic techniques. Methodology:The antimicrobial evaluation of DS-1 to DS-23 was done by tube dilution method against various pathogenic bacterial and fungal strains. The active antimicrobial derivatives were further evaluated for cytotoxicity against human lung carcinoma cell line (HCT-116), breast cancer cell line (MDAMB231), leukemic cancer cell line (K562), and normal cell line (HEK293) by MTT assay using doxorubicin as the standard drug. The test derivatives were additionally docked for the B-subunit of enzyme DNA gyrase from E. coli at the ATPase binding site to study the molecular interactions using Schrodinger maestro v11.5 software. Results and discussion:Most of the synthesized derivatives have shown high activity against Gram-negative bacteria particularly E. coli and K. pneumonia with MIC ranging from 1.95 to 7.81 ?g/ml. The derivatives have demonstrated very less activity against tested Gram positive bacterial and fungal strains. The derivatives DS-14 and DS-20 have been found to active against breast cancer cell line and human colon carcinoma cell line having IC50 in the range of 19-65 µg/ml. All the derivatives were found to less potent against leukemic cancer cell line. The synthesized derivatives have revealed their safety by exhibiting very less cytotoxicity against the normal cell line (HEK-293) with IC50?>?100 µg/ml. Most of the active derivatives have shown good docking scores in comparison to the standard drugs against DNA gyrase from E. coli. Further ADME predictions by Qikprop module of the Schrodinger confirmed these molecules have drug like properties. Conclusion:The derivatives DS-14 and DS-20 have shown potential against Gram-negative bacteria and breast cancer cell line and can be used as a lead for rational drug designing of the antimicrobial and cytotoxic agents..

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Docking study, synthesis and antimicrobial evaluation of some novel 4-anilinoquinazoline derivatives.

Publications

Docking study, synthesis and antimicrobial evaluation of some novel 4-anilinoquinazoline derivatives.

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