1-(3-amino-2,4-difluorophenyl)-7-chloro-6-fluoro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid | 179739-64-1

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二氮杂萘
• 英文名称: 1-(3-amino-2,4-difluorophenyl)-7-chloro-6-fluoro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid
• 英文别名: 1-(3-amino-2,4-difluorophenyl)-7-chloro-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid；1-(3-amino-2,4-difluorophenyl)-7-chloro-6-fluoro-4-oxo-1,8-naphthyridine-3-carboxylic acid
• CAS: 179739-64-1
• 化学式: C₁₅H₇ClF₃N₃O₃
• 分子量: 369.687
• InChiKey: ZRRALEYZDRZJQV-UHFFFAOYSA-N

物化性质

• 熔点：
  244-248 °C
• 沸点：
  576.0±50.0 °C(predicted)
• 密度：
  1.746±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  25
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  96.5
• 氢给体数：
  2
• 氢受体数：
  9

反应信息

• 作为反应物：
  描述：

  (S)-3-氨基吡咯烷 、 1-(3-amino-2,4-difluorophenyl)-7-chloro-6-fluoro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid 在 三乙胺 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 以76%的产率得到1-(3-amino-2,4-difluorophenyl)-7-[(3S)-3-aminopyrrolidin-1-yl]-6-fluoro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid
  参考文献：
  名称：

  A Novel Antibacterial 8-Chloroquinolone with a Distorted Orientation of the N1-(5-Amino-2,4-difluorophenyl) Group

  摘要：

  Fluoroquinolones represent a major class of antibacterial agents with great therapeutic potential. In this study, we designed m-aminophenyl groups as novel N-1 substituents of naphthyridones and quinolones. Among newly synthesized compounds, 7-(3-aminoazetidin-1-yl)-1-(5-amino-2,4-difluorophenyl)-8-chloro-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (4) has extremely potent antibacterial activities against Gram (+) as well as Gram (-) bacteria. This compound is significantly more potent than trovafloxacin against clinical isolates: 30 times against Streptococcus pneumoniae and 128 times against methicillin resistant Staphylococcus aureus. The structure-activity relationship (SAR) study revealed that a limited combination of 1-(5-amino-2,4-difluorophenyl) group, 7-(azetidin-1-yl) group, and 8-Cl atom (or Br atom or Me group) gave potent antibacterial activity. An X-ray crystallographic study of a 7-(3-ethylaminoazetidin-1-yl)-8-chloro derivative demonstrated that the N-1 aromatic group was remarkably distorted out of the core quinolone plane by steric repulsion between the C-8 C1 atom and the N-1 substituent. Furthermore, a molecular modeling study of 4 and its analogues demonstrated that a highly distorted orientation was induced by a steric hindrance of the C-8 substituent, such as Cl, Br, or a methyl group. Thus, their highly strained conformation should be a key factor for the potent antibacterial activity.

  DOI：

  10.1021/jm0205090
• 作为产物：
  描述：

  2,6-二氟-3-硝基苯甲酸 在 钯 盐酸 、 sodium azide 、 草酰氯 、 氢气 、 potassium carbonate 、 溶剂黄146 、 N,N-二甲基甲酰胺 作用下， 以 甲醇 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 生成 1-(3-amino-2,4-difluorophenyl)-7-chloro-6-fluoro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid
  参考文献：
  名称：

  A Novel Antibacterial 8-Chloroquinolone with a Distorted Orientation of the N1-(5-Amino-2,4-difluorophenyl) Group

  摘要：

  Fluoroquinolones represent a major class of antibacterial agents with great therapeutic potential. In this study, we designed m-aminophenyl groups as novel N-1 substituents of naphthyridones and quinolones. Among newly synthesized compounds, 7-(3-aminoazetidin-1-yl)-1-(5-amino-2,4-difluorophenyl)-8-chloro-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (4) has extremely potent antibacterial activities against Gram (+) as well as Gram (-) bacteria. This compound is significantly more potent than trovafloxacin against clinical isolates: 30 times against Streptococcus pneumoniae and 128 times against methicillin resistant Staphylococcus aureus. The structure-activity relationship (SAR) study revealed that a limited combination of 1-(5-amino-2,4-difluorophenyl) group, 7-(azetidin-1-yl) group, and 8-Cl atom (or Br atom or Me group) gave potent antibacterial activity. An X-ray crystallographic study of a 7-(3-ethylaminoazetidin-1-yl)-8-chloro derivative demonstrated that the N-1 aromatic group was remarkably distorted out of the core quinolone plane by steric repulsion between the C-8 C1 atom and the N-1 substituent. Furthermore, a molecular modeling study of 4 and its analogues demonstrated that a highly distorted orientation was induced by a steric hindrance of the C-8 substituent, such as Cl, Br, or a methyl group. Thus, their highly strained conformation should be a key factor for the potent antibacterial activity.

  DOI：

  10.1021/jm0205090

文献信息

• Pyridonecarboxylic acid derivatives or salts thereof and antibacterial
  申请人：Wakunaga Seiyaku Kabushiki Kaisha

  公开号：US05910498A1

  公开（公告）日：1999-06-08

  The invention provides a pyridonecarboxylic acid derivative of the following general formula (1): ##STR1## wherein R.sup.1 is a hydrogen atom or carboxy protecting group, R.sup.2 is a nitro or substituted or unsubstituted amino group, R.sup.3 is a halogen atom, each of R.sup.4 and R.sup.5, which may be the same or different, is a hydrogen atom, halogen atom, lower alkyl group or lower alkoxy group, A is a nitrogen atom or --CX.dbd. wherein X is a hydrogen atom, halogen atom, lower alkyl group or lower alkoxy group, and Z is a halogen atom or a saturated cyclic amino group which may have a substituent, or a salt thereof and an antibacterial agent comprising the same.

  该发明提供了以下一般式（1）的吡啶酮羧酸衍生物： 其中R.sup.1是氢原子或羧基保护基，R.sup.2是硝基或取代或未取代的氨基，R.sup.3是卤素原子，R.sup.4和R.sup.5中的每一个，可以相同也可以不同，是氢原子、卤素原子、低烷基基团或低烷氧基团，A是氮原子或--CX.dbd.，其中X是氢原子、卤素原子、低烷基基团或低烷氧基团，Z是卤素原子或饱和环状氨基团，可能带有取代基，或其盐以及包含其的抗菌剂。
• NOVEL PYRIDONECARBOXYLATE DERIVATIVE OR SALT THEREOF AND ANTIBACTERIAL CONTAINING THE SAME AS ACTIVE INGREDIENT
  申请人：WAKUNAGA SEIYAKU KABUSHIKI KAISHA

  公开号：EP0787720A1

  公开（公告）日：1997-08-06

  The invention provides a pyridonecarboxylic acid derivative of the following general formula (1): wherein R1 is a hydrogen atom or carboxy protecting group, R2 is a nitro or substituted or unsubstituted amino group, R3 is a halogen atom, each of R4 and R5, which may be the same or different, is a hydrogen atom, halogen atom, lower alkyl group or lower alkoxy group, A is a nitrogen atom or - CX= wherein X is a hydrogen atom, halogen atom, lower alkyl group or lower alkoxy group, and Z is a halogen atom or a saturated cyclic amino group which may have a substituent, or a salt thereof and an antibacterial agent comprising the same.

  本发明提供了以下通式(1)的吡啶甲酸衍生物： 其中 R1 是氢原子或羧基保护基团，R2 是硝基或取代或未取代的氨基，R3 是卤素原子，R4 和 R5（可以相同或不同）各自是氢原子、卤素原子、低级烷基或低级烷氧基，A 是氮原子或 - CX= 其中 X 是氢原子、卤素原子、低级烷基或低级烷氧基，Z 是卤素原子或饱和环状氨基（可以有取代基），或其盐以及由其组成的抗菌剂。
• PYRIDONECARBOXYLATE DERIVATIVE OR SALT THEREOF AND ANTIBACTERIAL CONTAINING THE SAME AS ACTIVE INGREDIENT
  申请人：WAKUNAGA SEIYAKU KABUSHIKI KAISHA

  公开号：EP0787720B1

  公开（公告）日：2003-07-16
• US5910498A
  申请人：——

  公开号：US5910498A

  公开（公告）日：1999-06-08
• A Novel Antibacterial 8-Chloroquinolone with a Distorted Orientation of the N1-(5-Amino-2,4-difluorophenyl) Group
  作者：Yasuhiro Kuramoto、Yoshihiro Ohshita、Jiro Yoshida、Akira Yazaki、Motoo Shiro、Tohru Koike

  DOI：10.1021/jm0205090

  日期：2003.5.1

  Fluoroquinolones represent a major class of antibacterial agents with great therapeutic potential. In this study, we designed m-aminophenyl groups as novel N-1 substituents of naphthyridones and quinolones. Among newly synthesized compounds, 7-(3-aminoazetidin-1-yl)-1-(5-amino-2,4-difluorophenyl)-8-chloro-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (4) has extremely potent antibacterial activities against Gram (+) as well as Gram (-) bacteria. This compound is significantly more potent than trovafloxacin against clinical isolates: 30 times against Streptococcus pneumoniae and 128 times against methicillin resistant Staphylococcus aureus. The structure-activity relationship (SAR) study revealed that a limited combination of 1-(5-amino-2,4-difluorophenyl) group, 7-(azetidin-1-yl) group, and 8-Cl atom (or Br atom or Me group) gave potent antibacterial activity. An X-ray crystallographic study of a 7-(3-ethylaminoazetidin-1-yl)-8-chloro derivative demonstrated that the N-1 aromatic group was remarkably distorted out of the core quinolone plane by steric repulsion between the C-8 C1 atom and the N-1 substituent. Furthermore, a molecular modeling study of 4 and its analogues demonstrated that a highly distorted orientation was induced by a steric hindrance of the C-8 substituent, such as Cl, Br, or a methyl group. Thus, their highly strained conformation should be a key factor for the potent antibacterial activity.