N-(2-(1H-indol-3-yl)ethyl)-4,5-dibromothiophene-2-carboxamide

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吲哚及其衍生物
• 英文名称: N-(2-(1H-indol-3-yl)ethyl)-4,5-dibromothiophene-2-carboxamide
• 英文别名: 4,5-dibromo-N-[2-(1H-indol-3-yl)ethyl]thiophene-2-carboxamide
• 化学式: C₁₅H₁₂Br₂N₂OS
• 分子量: 428.147
• InChiKey: AXYMNEAHIWFCRW-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5
• 重原子数：
  21
• 可旋转键数：
  4
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.13
• 拓扑面积：
  73.1
• 氢给体数：
  2
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  色胺 、 4,5-二溴噻吩-2-甲酸 在 benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate 、 三乙胺 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 18.25h， 以65%的产率得到N-(2-(1H-indol-3-yl)ethyl)-4,5-dibromothiophene-2-carboxamide
  参考文献：
  名称：

  Tryptamine derivatives disarm colistin resistance in polymyxin-resistant gram-negative bacteria

  摘要：

  The last three decades have seen a dwindling number of novel antibiotic classes approved for clinical use and a concurrent increase in levels of antibiotic resistance, necessitating alternative methods to combat the rise of multi-drug resistant bacteria. A promising strategy employs antibiotic adjuvants, non-toxic molecules that disarm antibiotic resistance. When co-dosed with antibiotics, these compounds restore antibiotic efficacy in drug-resistant strains. Herein we identify derivatives of tryptamine, a ubiquitous biochemical scaffold containing an indole ring system, capable of disarming colistin resistance in the Gram-negative bacterial pathogens Acinetobacter baumannii, Klebsiella pneumoniae, and Escherichia coli while having no inherent bacterial toxicity. Resistance was overcome in strains carrying endogenous chromosomally-encoded colistin resistance machinery, as well as resistance conferred by the mobile colistin resistance-1 (mcr-1) plasmid-borne gene. These compounds restore a colistin minimum inhibitory concentration (MIC) below the Clinical & Laboratory Sciences Institute (CLSI) breakpoint in all resistant strains.

  DOI：

  10.1016/j.bmc.2019.03.019

文献信息

• Tryptamine derivatives disarm colistin resistance in polymyxin-resistant gram-negative bacteria
  作者：William T. Barker、Courtney E. Chandler、Roberta J. Melander、Robert K. Ernst、Christian Melander

  DOI：10.1016/j.bmc.2019.03.019

  日期：2019.5

  The last three decades have seen a dwindling number of novel antibiotic classes approved for clinical use and a concurrent increase in levels of antibiotic resistance, necessitating alternative methods to combat the rise of multi-drug resistant bacteria. A promising strategy employs antibiotic adjuvants, non-toxic molecules that disarm antibiotic resistance. When co-dosed with antibiotics, these compounds restore antibiotic efficacy in drug-resistant strains. Herein we identify derivatives of tryptamine, a ubiquitous biochemical scaffold containing an indole ring system, capable of disarming colistin resistance in the Gram-negative bacterial pathogens Acinetobacter baumannii, Klebsiella pneumoniae, and Escherichia coli while having no inherent bacterial toxicity. Resistance was overcome in strains carrying endogenous chromosomally-encoded colistin resistance machinery, as well as resistance conferred by the mobile colistin resistance-1 (mcr-1) plasmid-borne gene. These compounds restore a colistin minimum inhibitory concentration (MIC) below the Clinical & Laboratory Sciences Institute (CLSI) breakpoint in all resistant strains.