Synthesis and biological activity of novel bis-indole inhibitors of bacterial transcription initiation complex formation
作者:Marcin Mielczarek、Ruth V. Devakaram、Cong Ma、Xiao Yang、Hakan Kandemir、Bambang Purwono、David StC. Black、Renate Griffith、Peter J. Lewis、Naresh Kumar
DOI:10.1039/c4ob00460d
日期:——
mechanism of antibacterial activity. Several classes of structurally related bis-indole inhibitors of bacterial transcription initiation complex formation were synthesized and their antimicrobial activities were evaluated. Condensation of indole-7- and indole-2-carbohydrazides with 7- and 2-trichloroacetylindoles or indole-7- and indole-2-glyoxyloyl chlorides resulted in the successful synthesis of 7,7′-
细菌对临床批准的抗生素的耐药性不断提高,导致当今临床医生的治疗选择令人震惊地减少。我们有针对性细菌RNA聚合酶之间的互动至关重要σ 70 / σ一用于开发显示出新的抗菌活性机理的先导分子。合成了几类细菌转录起始复合物形成的结构相关的双吲哚抑制剂,并对其抗菌活性进行了评估。吲哚-7-和吲哚-2-碳酰肼与7-和2-三氯乙酰吲哚或吲哚-7-和吲哚-2-乙氧基氯酰氯的缩合成功合成了7,7'-,2,2'-,2带有–CO–NH–NH–CO–和–CO–CO–NH–NH–CO–接头的1,7'和3,2'连接的双吲哚衍生物。吲哚-7-乙二酰氯与水合肼以不同比例反应,分别得到–CO–CO–NH–NH–CO–CO–双吲哚或酰肼衍生物。发现所得到的化合物是针对β'-CH-活性σ 70 /σ甲2.2在ELISA测定相互作用和抑制革兰氏阳性和革兰氏阴性细菌的生长。为了确定生物活性所需的合成抑制剂的结构特征,进行了结构-活性关系(SAR)研究。