1-Ethyl-6,8-difluoro-5-hydroxy-7-(3-methyl-piperazin-1-yl)-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid | 131683-87-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 喹啉及其衍生物
• 英文名称: 1-Ethyl-6,8-difluoro-5-hydroxy-7-(3-methyl-piperazin-1-yl)-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid
• 英文别名: 1-Ethyl-6,8-difluoro-5-hydroxy-7-(3-methylpiperazin-1-yl)-4-oxoquinoline-3-carboxylic acid
• CAS: 131683-87-9
• 化学式: C₁₇H₁₉F₂N₃O₄
• 分子量: 367.352
• InChiKey: KUSJKQDJIOUBCJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -1.2
• 重原子数：
  26
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.41
• 拓扑面积：
  93.1
• 氢给体数：
  3
• 氢受体数：
  9

反应信息

• 作为产物：
  描述：

  2-(2,3,4,5-tetrafluoro-6-methoxyphenyl)-4,4-dimethyl-2-oxazoline 在 三乙胺 作用下， 以 乙腈 为溶剂， 生成 1-Ethyl-6,8-difluoro-5-hydroxy-7-(3-methyl-piperazin-1-yl)-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid
  参考文献：
  名称：

  Synthesis and biological activity of 5-amino- and 5-hydroxyquinolones, and the overwhelming influence of the remote N1-substituent in determining the structure-activity relationship

  摘要：

  A series of 5-amino- and 5-hydroxyquinolone antibacterials substituted at C7 with a select group of common piperazinyl and 3-aminopyrrolidinyl side chains was prepared. These 5-substituted derivatives were compared to the analogous 5-hydrogen compounds for antiinfective activity by using DNA gyrase inhibition, minimum inhibitory concentrations against a variety of bacteria, and in vivo efficacy in the mouse infection model. The influence on the structure-activity relationships of varied substituents at C8 (H, F, Cl) and Ni (ethyl, cyclopropyl, difluorophenyl) was also studied. The results showed that several of the structure-activity conclusions regarding side-chain bulk at C7, the effect of halogen at C8, and the effect of the C5-amino group were greatly influenced by the choice of the N1-substituent. Several outstanding broad spectrum quinolones were identified in this work. In particular, the spectrum and potency of the 7-piperazinyl quinolones could be greatly enhanced by the judicious choice of C5-, C8-, and N1-substitutents.

  DOI：

  10.1021/jm00107a039

文献信息

• DOMAGALA, JOHN M.;BRIDGES, ALEX J.;CULBERTSON, TOWNLEY P.;GAMBINO, LAURA;+, J. MED. CHEM., 34,(1991) N, C. 1142-1154
  作者：DOMAGALA, JOHN M.、BRIDGES, ALEX J.、CULBERTSON, TOWNLEY P.、GAMBINO, LAURA、+

  DOI：——

  日期：——
• Synthesis and biological activity of 5-amino- and 5-hydroxyquinolones, and the overwhelming influence of the remote N1-substituent in determining the structure-activity relationship
  作者：John M. Domagala、Alex J. Bridges、Townley P. Culbertson、Laura Gambino、Susan E. Hagen、Gregory Karrick、Kenneth Porter、Joseph P. Sanchez、Josephine A. Sesnie

  DOI：10.1021/jm00107a039

  日期：1991.3

  A series of 5-amino- and 5-hydroxyquinolone antibacterials substituted at C7 with a select group of common piperazinyl and 3-aminopyrrolidinyl side chains was prepared. These 5-substituted derivatives were compared to the analogous 5-hydrogen compounds for antiinfective activity by using DNA gyrase inhibition, minimum inhibitory concentrations against a variety of bacteria, and in vivo efficacy in the mouse infection model. The influence on the structure-activity relationships of varied substituents at C8 (H, F, Cl) and Ni (ethyl, cyclopropyl, difluorophenyl) was also studied. The results showed that several of the structure-activity conclusions regarding side-chain bulk at C7, the effect of halogen at C8, and the effect of the C5-amino group were greatly influenced by the choice of the N1-substituent. Several outstanding broad spectrum quinolones were identified in this work. In particular, the spectrum and potency of the 7-piperazinyl quinolones could be greatly enhanced by the judicious choice of C5-, C8-, and N1-substitutents.