4‐Substituted thieno[2,3‐ dd ]pyrimidines as potent antibacterial agents: Rational design, microwave‐assisted synthesis, biological evaluation and molecular docking studies

摘要

> In an attempt to discover a new class of antibacterial agents with improved efficacy and to overcome the drug‐resistant problems, some novel 4‐substituted thieno[2,3‐ d ]pyrimidines have been synthesized via microwave‐assisted methodology and evaluated for their in vitro antibacterial activity against various pathogenic bacterial strains. Compounds 12 b and 13 c showed the promising inhibitory potencies against Staphylococcus aureus , Bacillus subtilis , Pseudomonas aeruginosa and Escherichia coli with MIC s ranging from 2 to 10?μg/ml. Compound 13 c was also found to be highly potent against methicillin‐resistant S. aureus ( MRSA ) with MIC value of 4?μg/ml. Docking simulation studies have been performed to unravel the mode of action and association study indicate the binding of potent compounds with DHPS enzyme. In silico ADME studies suggest the drug‐like characteristics of the potent compounds.