Design, synthesis, and biological evaluation of chrysin derivatives as potential FabH inhibitors

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• 作者：Hong-Xia Li ; Zhong-Chang Wang ; Yu-Mei Qian ; Xiao-Qiang Yan ; Ya-Dong Lu and Hai-Liang Zhu
• 刊名：Chemical Biology & Drug Design
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：89
• 期：1
• 页码：136-140
• 全文大小：451K
• ISSN：1747-0285

文摘

New series of chrysin derivatives (4a–4t) were designed and synthesized by introducing different substituted piperazines at C-7 position. Their inhibitory effects on FabH were evaluated using two Gram-negative bacterial strains, Escherichia coli and Pseudomonas aeruginosa, and two Gram-positive bacterial strains, Bacillus subtilis and Staphylococcus aureus. To our delight, most of these compounds exhibited a dramatic increase in inhibitory potency, compared with the control positive drugs. Among them, compound 4s exhibited the most potent inhibitory activity with IC₅₀ values of 5.78 ± 0.24 μm inhibiting E. coli FabH and potent antibacterial activity against S. aureus and E. coli with MIC of 1.25 ± 0.01, 1.15 ± 0.12 μg/mL, respectively, comparing to the control positive drugs penicillin G (7.56 ± 0.30 μm). Docking simulation was performed to position compound 4s into the FabH active site, and the result showed that compound 4s could bind well with the FabH as potent FabH inhibitor.