Ethyl 2-(3-chloro-4-fluoroanilino)pyridine-3-carboxylate

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 英文名称: Ethyl 2-(3-chloro-4-fluoroanilino)pyridine-3-carboxylate
• 化学式: C₂₇H₃₈N₅O₄Pol
• 分子量: 294.71
• InChiKey: MSAANULLGSHJND-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  20
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.14
• 拓扑面积：
  51.2
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  三氟乙酸 、 Ethyl 2-(3-chloro-4-fluoroanilino)pyridine-3-carboxylate 以 水 为溶剂， 反应 2.0h， 生成 (S)-N-((R)-1-(((S)-1-amino-1-oxo-3-(p-tolyl)propan-2-yl)amino)-1-oxopropan-2-yl)-1-((2S,3aS,7aS)-1-(4-(N-hydroxycarbamimidoyl)benzoyl)octahydro-1H-indole-2-carbonyl)pyrrolidine-2-carboxamide 2,2,2-trifluoroacetate
  参考文献：
  名称：

  Conformationally restricted analogs of the direct thrombin inhibitor FM 19

  摘要：

  The serine protease thrombin plays several key roles in the clotting cascade within the hemostatic system, such as in fibrin formation and platelet activation. Thus, development of an inhibitor that binds to the enzyme's active site (a direct thrombin inhibitor) offers an approach for the treatment of thrombus-associated diseases. Previous structure-activity relationship studies originally based on the bradykinin breakdown product Arg-Pro-Pro-Gly-Phe (RPPGF) led to the development of lead compound FM 19 (D-Arg-Oic-Pro-D-Ala-Phe(p-Me)-NH2). The recently determined X-ray structure of FM 19 in the active site of thrombin has revealed sites of modification to potentially improve inhibition. In this study, we report the synthesis and biological characterization of nine peptides that replace only the D-Arg residue of the FM 19 sequence, investigating ways to add conformational restriction, modification of the basic moiety at the end of the side chain, and removal of the charge from the N-terminus. Two of these peptides, 6 and 7 (IC50 values of 0.51 and 0.45 mu M, respectively), show similar potency to the best compounds in the FM 19 series reported thus far. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2011.10.045
• 作为产物：
  描述：

  3-氯-4-氟苯胺 、 2-氯烟酸乙酯 以 乙二醇 为溶剂， 反应 6.0h， 以83%的产率得到Ethyl 2-(3-chloro-4-fluoroanilino)pyridine-3-carboxylate
  参考文献：
  名称：

  2-Anilinonicotinyl linked 2-aminobenzothiazoles and [1,2,4]triazolo[1,5-b] [1,2,4]benzothiadiazine conjugates as potential mitochondrial apoptotic inducers

  摘要：

  A series of N-(2-anilino-pyridyl) linked 2-amino benzothiazoles (4a-n) and [1,2,4]triazolo [1,5-b]benzothiadiazine conjugates (5a-j) have been designed, synthesized and evaluated for their antiproliferative activity. Some of these compounds (4h-k, 4n, and 5e) have exhibited potent cytotoxicity specifically against human leukemia HL-60 cell lines with IC50 values in the range of 0.08-0.70 mu M. All these compounds were tested for their effects on the cell cycle perturbations and induction of apoptosis. Morphological evidences of apoptosis, including fragmentation of nuclei and inter nucleosomal DNA laddering formation were clearly observed after 24 h exposure to compound 4i. Flow cytometry analysis revealed that compound 4i showed drastic cell cycle perturbations due to concentration dependant increase in the sub-G0 region which comprises of both the apoptotic and debris fraction, thus implying the extent of cell death. These compounds trigger the mitochondrial apoptotic pathway that results in the loss of mitochondrial membrane potential through activation of multiple caspases followed by activation of caspase-3, and finally cleavage of PARP. Further the mechanism of cell death was analysed by fluorescent microscopic analysis and also by scanning electron microscopy. The cytotoxicity of 4i correlated with induction of apoptosis, caspases activation and DNA damage and thus indicating the apoptotic pathway of anticancer effect of these compounds. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2011.09.060