1-(2-Hydroxybenzoyl)-thiosemicarbazides are promising antimicrobial agents targeting d-alanine-d-alanine ligase in bacterio
作者:Alice Ameryckx、Léopold Thabault、Lionel Pochet、Serge Leimanis、Jacques H. Poupaert、Johan Wouters、Bernard Joris、Françoise Van Bambeke、Raphaël Frédérick
DOI:10.1016/j.ejmech.2018.09.067
日期:2018.11
decrease in D-Ala-D-Ala. Further structure-activity relationships (SARs) studies provided evidence that the hydroxyl substituent in the 2-position (R1) of the benzoylthiosemicarbazide scaffold is essential for the enzymatic inhibition. This work thus highlights the 1-(2-hydroxybenzoyl)-thiosemicarbazide motif as a very promising tool for the development of novel antibacterial compounds acting through an
细菌细胞壁和肽聚糖合成中涉及的酶是开发新型抗菌剂的优先目标。在这项工作中,设计和合成了一系列的D-Ala-D-Ala连接酶(Ddl)的1-(2-羟基苯甲酰基)-硫代氨基脲抑制剂,以针对细菌的耐药菌株为目标。其中,4-(3,4-二氯苯基)-1-(2-羟基苯甲酰基)-3-硫代氨基脲29被认为是有效的Ddl抑制剂,其活性在微摩尔范围内。该化合物具有强大的抗微生物活性,包括针对多药耐药菌株的抗微生物活性,已被证明具有杀菌作用,并且对THP-1人单核细胞系具有极低的细胞毒性。确认抑制Ddl活性达29UPLC-MS / MS证明细菌中D-Ala细胞内池的增加,同时D-Ala-D-Ala也相应减少。进一步的结构活性关系(SARs)研究提供了证据,表明苯甲酰硫基氨基脲骨架的2位(R 1)中的羟基取代基对于酶促抑制是必不可少的。因此,这项工作突出了1-(2-羟基苯甲酰基)-硫代氨基脲基序,它是开发新型抗菌化