tert-butyl (2,4-difluoro-5-nitrophenyl)carbamate | 179741-61-8

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: tert-butyl (2,4-difluoro-5-nitrophenyl)carbamate
• 英文别名: tert-butyl N-(2,4-difluoro-5-nitrophenyl)carbamate
• CAS: 179741-61-8
• 化学式: C₁₁H₁₂F₂N₂O₄
• 分子量: 274.224
• InChiKey: LDPQUEYAWYVYES-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  19
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  84.2
• 氢给体数：
  1
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  tert-butyl (2,4-difluoro-5-nitrophenyl)carbamate 在 钯 盐酸 、 氢气 、 potassium carbonate 、 溶剂黄146 作用下， 以 甲醇 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 72.0h， 生成 1-(3-amino-4,6-difluorophenyl)-6,7-difluoro-8-methyl-1,4-dihydro-4-oxoquinoline-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：

  2,4-二氟苯甲酸 在 sodium azide 、 草酰氯 、 硫酸 、 potassium nitrate 、 N,N-二甲基甲酰胺 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 44.33h， 生成 tert-butyl (2,4-difluoro-5-nitrophenyl)carbamate
  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

• [EN] SUBSTITUTED PYRIMIDINE COMPOUNDS, COMPOSITIONS AND MEDICINAL APPLICATIONS THEREOF<br/>[FR] COMPOSÉS DE PYRIMIDINE SUBSTITUÉE, COMPOSITIONS ET APPLICATIONS MÉDICINALES CORRESPONDANTES
  申请人：JUBILANT BIOSYS LTD

  公开号：WO2015025197A1

  公开（公告）日：2015-02-26

  The present disclosure relates to pyrimidine compounds of formula (I), their stereoisomers, tautomers, pharmaceutically acceptable salts, polymorphs, solvates, and hydrates thereof. The present disclosure also relates to process of preparation of these pyrimidine compounds, and to pharmaceutical compositions containing them. The compounds of the present disclosure are useful in the treatment, prevention or suppression of diseases and disorders mediated by epidermal growth factor receptor (EGFR) family kinases.

  本公开涉及式(I)的嘧啶化合物，它们的立体异构体、互变异构体、药学上可接受的盐、多型体、溶剂合物和水合物。本公开还涉及制备这些嘧啶化合物的方法，以及含有它们的药物组合物。本公开的化合物在治疗、预防或抑制由表皮生长因子受体（EGFR）家族激酶介导的疾病和紊乱方面具有用途。
• SUBSTITUTED PYRIMIDINE COMPOUNDS, COMPOSITIONS AND MEDICINAL APPLICATIONS THEREOF
  申请人：JUBILANT BIOSYS LIMITED

  公开号：US20160207905A1

  公开（公告）日：2016-07-21

  The present disclosure relates to pyrimidine compounds of formula (I), their stereoisomers, tautomers, pharmaceutically acceptable salts, polymorphs, solvates, and hydrates thereof. The present disclosure also relates to process of preparation of these pyrimidine compounds, and to pharmaceutical compositions containing them. The compounds of the present disclosure are useful in the treatment, prevention or suppression of diseases and disorders mediated by epidermal growth factor receptor (EGFR) family kinases.

  本公开涉及式（I）的嘧啶化合物，它们的立体异构体，互变异构体，药学上可接受的盐，多晶形，溶剂化物和水合物。本公开还涉及制备这些嘧啶化合物的过程，以及含有它们的制药组合物。本公开所述化合物在治疗，预防或抑制由表皮生长因子受体（EGFR）家族激酶介导的疾病和疾病方面具有用处。
• 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。
• NOVEL PHENYLENEDIAMINES AND PROCESS FOR PREPARING THE SAME
  申请人：WAKUNAGA PHARMACEUTICAL CO., LTD.

  公开号：EP0897909A1

  公开（公告）日：1999-02-24

  Phenylenediamines represented by general formula (1): wherein R represents an alkyl group or an optionally substituted aralkyl group, X1 represents a hydrogen atom or a halogen atom, and X2 represents a halogen atom; salts thereof, and a process for preparing the same. The compounds are useful as intermediates for synthesis of pyridonecarboxylic acid derivatives useful as antibacterial agents.

  由通式(1)代表的苯二胺： 其中 R 代表烷基或任选取代的芳烷基，X1 代表氢原子或卤素原子，X2 代表卤素原子；它们的盐及其制备方法。这些化合物可用作合成可用作抗菌剂的吡啶甲酸衍生物的中间体。
• 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