Synthesis, optimization, in vitro and in vivo study of bicyclic substituted amine as MenA inhibitor
作者:Seoung-ryoung Choi、Prabagaran Narayanasamy
DOI:10.1016/j.bmcl.2021.128203
日期:2021.9
to improve growth inhibitory activity against MRSA. Among the MenA inhibitors, bicyclic substituted amine 3 showed MIC of 3 µg/mL, and alkenyl substituted amine 11 showed MIC of 8 µg/mL against USA300. Regrowth of MRSA was observed on addition of MK when exposed to 8 µg/mL of inhibitor 11, supporting inhibition of MK biosynthesis. However, inhibitor 11 did not show efficacy in treating USA300 infected
甲萘醌 (MK) 在电子传递链 (ETC) 中发挥重要作用,表明 MK 生物合成酶是药物开发的潜在靶点。以前,我们证明耐甲氧西林金黄色葡萄球菌(MRSA) 对萘酚类化合物敏感,这些化合物是通过模拟去甲基甲萘醌(MenA 酶促反应的产物)开发的。此处,一系列新的MenA抑制剂(4 - 19)的合成和评价为在该研究中的MenA抑制剂。这些抑制剂旨在提高对 MRSA 的生长抑制活性。在 MenA 抑制剂中,双环取代胺3 的MIC 为 3 µg/mL,烯基取代胺11显示对 USA300 的 MIC 为 8 µg/mL。当暴露于 8 µg/mL 抑制剂11 时,在添加 MK 时观察到 MRSA 的再生,支持对 MK 生物合成的抑制。然而,抑制剂11在治疗高达 25 µg/mL 浓度的USA300 感染的秀丽隐杆线虫方面没有表现出功效。然而,当暴露于双环取代胺3时,所有受感染的秀丽隐杆线虫都存活下来。