Molecular docking studies and facile synthesis of most potent biologically active N-tert-butyl-4-(4-substituted phenyl)-2-((substituted-2-oxo-2H-chromen-4-yl)methylthio)-6-oxo-1,6-dihydropyrimidine-5-carboxamide hybrids: An approach for microwave-assisted syntheses and biological evaluation

Add time:07/11/2019    Source:sciencedirect.com

An efficient, high yields and rapid synthesis of N-tert-butyl-4-(4-substituted phenyl)-2-((substituted-2-oxo-2H-chromen-4-yl)methylthio)-6-oxo-1,6-dihydropyrimidine-5-carboxamide derivatives (4a–4j) under microwave-irradiation has been described. All the newly synthesized compounds (4a–4j) were characterized by elemental analysis and spectroscopic studies. The synthesised compounds (4a–4j) were evaluated for their antibacterial activity by agar-well diffusion method and anti-inflammatory activity by egg albumin denaturation method. The compound (4f) exhibits antibacterial effect with MIC–2.5 μg/mL against gram positive S. aureus bacterial strain compared to standard ciprofloxacin drug (MIC–10 μg/mL). The compound (4c) shows an inhibition of heat induced protein denaturation 75.42% at a concentration of 31.25 μg/ml and is almost ten times more active than compared to standard aceclofenac drug (5.50%). Molecular docking study has been performed for all the synthesized compounds with S. aureus dihydropteroate synthetase (DHPS) and results obtained are quite promising.

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