1-Cyclopropyl-8-fluoro-7-(4-methyl-piperazin-1-yl)-6-nitro-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid ethyl ester | 109887-70-9

• 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-Cyclopropyl-8-fluoro-7-(4-methyl-piperazin-1-yl)-6-nitro-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid ethyl ester
• 英文别名: Ethyl 1-cyclopropyl-8-fluoro-7-(4-methylpiperazin-1-yl)-6-nitro-4-oxoquinoline-3-carboxylate
• CAS: 109887-70-9
• 化学式: C₂₀H₂₃FN₄O₅
• 分子量: 418.425
• InChiKey: NEDSTRUSUZNYOW-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  30
• 可旋转键数：
  5
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  98.9
• 氢给体数：
  0
• 氢受体数：
  9

反应信息

• 作为反应物：
  描述：

  1-Cyclopropyl-8-fluoro-7-(4-methyl-piperazin-1-yl)-6-nitro-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid ethyl ester 在 镍 sodium hydroxide 、 氢气 作用下， 以 乙醇 为溶剂， 25.0 ℃ 、101.33 kPa 条件下， 反应 1.0h， 生成 6-amino-1-cyclopropyl-8-fluoro-7-(4-methyl-1-piperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
  参考文献：
  名称：

  6-氨基喹诺酮类：一类新的喹诺酮类抗菌剂？

  摘要：

  通过先前的QSAR研究设计了一系列喹诺酮和1,8-萘啶酮-3-羧酸，它们的特征是在C-6位置的氨基而不是通常的氟原子，并进行了首次体外抗菌活性。所有合成的化合物都对革兰氏阴性菌保持良好的活性（铜绿假单胞菌除外），并且具有硫吗啉基作为C-7取代基的那些化合物也对革兰氏阳性菌具有良好的活性。还讨论了与C-1，C-5，C-7和C-8取代基相关的结构活性关系的某些方面。衍生物18g和38g对革兰氏阴性菌和革兰氏阳性菌分别具有0.45和0.66-0.76微克/ mL的几何平均MIC的最佳活性。这种抗菌活性反映了它们抑制细菌DNA旋转酶的能力。这项研究的结果表明，尽管C-6氟仍然是优选的取代基，但仍可通过用氨基取代而获得良好的活性。

  DOI：

  10.1021/jm00006a017
• 作为产物：
  描述：

  ethyl 2-(2,4-dichloro--3-fluoro-5-nitrobenzoyl)-3-(dimethylamino)acrylate 在 27 potassium carbonate 作用下， 以 乙醚 、 乙醇 、 乙腈 为溶剂， 反应 6.0h， 生成 1-Cyclopropyl-8-fluoro-7-(4-methyl-piperazin-1-yl)-6-nitro-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid ethyl ester
  参考文献：
  名称：

  Studies on 6-Aminoquinolones: synthesis and antibacterial evaluation of 6-amino-8-ethyl- and 6-amino-8-methoxyquinolones

  摘要：

  From our quantitative structure-activity relationship (QSAR) study on a large set of 6-aminoquinolones, which indicated that a group larger than methyl could be allocated at C-8 position, we have synthesized two new series of 6-aminoquinolones characterized by the presence of an ethyl or a methoxy group at C-8 position. The antibacterial evaluation shows that, while the 8-ethyl derivatives were devoid of any antibacterial activity, the introduction of methoxy group gave compounds with good antibacterial activity, especially against Gram-positive bacteria. A tentative explanation of the different behaviours among the 8-substituted analogues is given taking into account both the length and electronic properties of the C-8 groups. (C) 1999 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0968-0896(99)00207-2

文献信息

• MASUDZAVA, KUNIYASU;SUDZUYA, SEHJGO;XIRAI, KEHJDZI
  作者：MASUDZAVA, KUNIYASU、SUDZUYA, SEHJGO、XIRAI, KEHJDZI

  DOI：——

  日期：——
• 6-Aminoquinolones: A New Class of Quinolone Antibacterials?
  作者：Violetta Cecchetti、Sergio Clementi、Gabriele Cruciani、Arnaldo Fravolini、Pier Giuseppe Pagella、Angela Savino、Oriana Tabarrini

  DOI：10.1021/jm00006a017

  日期：1995.3

  acids, designed by previous QSAR studies and characterized by an amino group at the C-6 position instead of the usual fluorine atom, were synthesized for the first time and evaluated for in vitro antibacterial activity. All of the synthesized compounds maintain good activity against Gram-negative bacteria (Pseudomonas aeruginosa excluded), and those compounds having a thiomorpholine group as the C-7 substituent

  通过先前的QSAR研究设计了一系列喹诺酮和1,8-萘啶酮-3-羧酸，它们的特征是在C-6位置的氨基而不是通常的氟原子，并进行了首次体外抗菌活性。所有合成的化合物都对革兰氏阴性菌保持良好的活性（铜绿假单胞菌除外），并且具有硫吗啉基作为C-7取代基的那些化合物也对革兰氏阳性菌具有良好的活性。还讨论了与C-1，C-5，C-7和C-8取代基相关的结构活性关系的某些方面。衍生物18g和38g对革兰氏阴性菌和革兰氏阳性菌分别具有0.45和0.66-0.76微克/ mL的几何平均MIC的最佳活性。这种抗菌活性反映了它们抑制细菌DNA旋转酶的能力。这项研究的结果表明，尽管C-6氟仍然是优选的取代基，但仍可通过用氨基取代而获得良好的活性。
• Studies on 6-Aminoquinolones: synthesis and antibacterial evaluation of 6-amino-8-ethyl- and 6-amino-8-methoxyquinolones
  作者：Violetta Cecchetti、Oriana Tabarrini、Stefano Sabatini、Hua Miao、Enrica Filipponi、Arnaldo Fravolini

  DOI：10.1016/s0968-0896(99)00207-2

  日期：1999.11

  From our quantitative structure-activity relationship (QSAR) study on a large set of 6-aminoquinolones, which indicated that a group larger than methyl could be allocated at C-8 position, we have synthesized two new series of 6-aminoquinolones characterized by the presence of an ethyl or a methoxy group at C-8 position. The antibacterial evaluation shows that, while the 8-ethyl derivatives were devoid of any antibacterial activity, the introduction of methoxy group gave compounds with good antibacterial activity, especially against Gram-positive bacteria. A tentative explanation of the different behaviours among the 8-substituted analogues is given taking into account both the length and electronic properties of the C-8 groups. (C) 1999 Elsevier Science Ltd. All rights reserved.