Bioorganic Chemistry (2020)
Update date:2022-08-16
Topics:
Hu, Chun-Fang
Zhang, Peng-Li
Sui, Yan-Fei
Lv, Jing-Song
Ansari, Mohammad Fawad
Battini, Narsaiah
Li, Shuo
Zhou, Cheng-He
Geng, Rong-Xia
In an effort for the development of novel antimicrobial agents, ethylenic conjugated coumarin thiazolidinediones as potential multi-targeting new antimicrobial compounds were synthesized through convenient procedures from commercially available resorcinol and were evaluated for their antimicrobial potency. Bioactive evaluation revealed that some of the prepared compounds showed strong antimicrobial activities towards the tested microorganisms including clinically drug-resistant strains. Especially, propargyl derivative 12b exhibited effective anti-MRSA potency with MIC value of 0.006 μmol/mL, which was highly advantageous over clinical antibacterial drug norfloxacin. Compound 12b showed rapid killing effect, low toxicity against hepatocyte LO2 cell line, and no obvious drug resistance development against MRSA. Preliminary exploration of action mechanism manifested that molecule 12b acted upon MRSA through forming stable supramolecular complex with bacterial DNA which might impede DNA replication. Molecular docking showed that compound 12b could bind with DNA-gyrase through hydrogen bonds.
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