4-Oxo-7-trifluoromethyl-4,5-dihydro-[1,2,4]triazolo[1,5-a]quinoxaline-2-carboxylic acid ethyl ester | 237420-77-8

• 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: 4-Oxo-7-trifluoromethyl-4,5-dihydro-[1,2,4]triazolo[1,5-a]quinoxaline-2-carboxylic acid ethyl ester
• 英文别名: ethyl 4-oxo-7-(trifluoromethyl)-5H-[1,2,4]triazolo[1,5-a]quinoxaline-2-carboxylate
• CAS: 237420-77-8
• 化学式: C₁₃H₉F₃N₄O₃
• 分子量: 326.235
• InChiKey: WLRVXNXLXKIVIN-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  23
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.23
• 拓扑面积：
  86.1
• 氢给体数：
  1
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  4-Oxo-7-trifluoromethyl-4,5-dihydro-[1,2,4]triazolo[1,5-a]quinoxaline-2-carboxylic acid ethyl ester 在 硝酸 、 铁粉 作用下， 以 溶剂黄146 为溶剂， 反应 2.0h， 生成 8-Amino-4-oxo-7-trifluoromethyl-4,5-dihydro-[1,2,4]triazolo[1,5-a]quinoxaline-2-carboxylic acid ethyl ester
  参考文献：
  名称：

  Synthesis and Biological Evaluation of Analogues of 7-Chloro-4,5-dihydro-4- oxo-8-(1,2,4-triazol-4-yl)-1,2,4-triazolo[1,5-a]quinoxaline-2-carboxylic Acid (TQX-173) as Novel Selective AMPA Receptor Antagonists

  摘要：

  In recent papers (Catarzi, D.; et al. J. Med. Chem. 2000, 43, 3824-3826; 2001, 44, 31573165) we reported chemical and biological studies on 4,5-dihydro-4-oxo-1,2,4-triazolo[1,5-a]-quinoxaline-2-carboxylates (TQXs) bearing different nitrogen-containing heterocycles at position-8. In particular, from these studies it emerged that both the 7-chloro-4,5-dihydro-4-oxo-8-(1,2,4-triazol-4-yl)-1,2,4-triazolo[1,5-a] quinoxaline-2-carboxylic acid TQX-173 (compound B) and its corresponding ethyl ester (compound A) were the most active and selective compounds of this series. In pursuing our investigation on the structure-activity relationships of these TQX derivatives, different electron-withdrawing groups (CF3, NO2) were introduced at position 7 on the TQX ring system, replacing the 7-chloro substituent of B and of other selected 8-heteroaryltriazoloquinoxaline-2-carboxylates previously described. All the newly synthesized compounds were biologically evaluated for their binding at the Gly/NMDA, AMPA, and KA high-affinity receptors. Gly/NMDA binding assays were performed to assess the selectivity of the reported compounds toward the AMPA receptor. Compounds endowed with micromolar binding affinity for the KA high-affinity binding site were also evaluated for their binding at the KA low-affinity receptor. Some selected compounds were also tested for their functional antagonist activity at the AMPA and NMDA receptor-ion channel complex. The results obtained in this study have pointed out that 4,5-dihydro-7-nitro-4-oxo-8-(3-carboxypyrrol-1-yl)-1,2,4-triazolo[1,5-alquinoxaline-2-carboxylic acid (9b) and its corresponding ethyl ester (9a) are the most potent and selective AMPA receptor antagonists reported to date among the TQX series.

  DOI：

  10.1021/jm030906q
• 作为产物：
  描述：

  ethyl 2-amino-2-[[2-nitro-4-(trifluoromethyl)phenyl]hydrazinylidene]acetate 在 硫酸 、 铁粉 、 溶剂黄146 作用下， 反应 1.0h， 生成 4-Oxo-7-trifluoromethyl-4,5-dihydro-[1,2,4]triazolo[1,5-a]quinoxaline-2-carboxylic acid ethyl ester
  参考文献：
  名称：

  4,5-Dihydro-1,2,4-triazolo[1,5-a]quinoxalin-4-ones:  Excitatory Amino Acid Antagonists with Combined Glycine/NMDA and AMPA Receptor Affinity

  摘要：

  A series of 4,5-dihydro-1,2,4-triazolo[1,5-alpha]quinoxalin-4-ones bearing different substituents on the benzo-fused ring and at position 2 were synthesized and biologically evaluated for their binding at glycine/NMDA and AMPA receptors. Most of the reported compounds show combined glycine/NMDA and AMPA receptor binding activity providing further evidences of the structural similarities of the binding pockets of both receptor recognition sites. Moreover, this study has pointed out some differences for the binding at each receptor type. In particular, for the glycine/NMDA receptor-ligand interaction, the presence of a free acidic function at position 2 and an electron-withdrawing substituent(s) nonbulkier than chlorine atom(s) on the benzo-fused moiety is required. Functional antagonism at the NMDA receptor-ion channel complex was also performed on some selected compounds.

  DOI：

  10.1021/jm981102r

文献信息

• 4,5-Dihydro-1,2,4-triazolo[1,5-<i>a</i>]quinoxalin-4-ones:  Excitatory Amino Acid Antagonists with Combined Glycine/NMDA and AMPA Receptor Affinity
  作者：Daniela Catarzi、Vittoria Colotta、Flavia Varano、Lucia Cecchi、Guido Filacchioni、Alessandro Galli、Chiara Costagli

  DOI：10.1021/jm981102r

  日期：1999.7.1

  A series of 4,5-dihydro-1,2,4-triazolo[1,5-alpha]quinoxalin-4-ones bearing different substituents on the benzo-fused ring and at position 2 were synthesized and biologically evaluated for their binding at glycine/NMDA and AMPA receptors. Most of the reported compounds show combined glycine/NMDA and AMPA receptor binding activity providing further evidences of the structural similarities of the binding pockets of both receptor recognition sites. Moreover, this study has pointed out some differences for the binding at each receptor type. In particular, for the glycine/NMDA receptor-ligand interaction, the presence of a free acidic function at position 2 and an electron-withdrawing substituent(s) nonbulkier than chlorine atom(s) on the benzo-fused moiety is required. Functional antagonism at the NMDA receptor-ion channel complex was also performed on some selected compounds.
• Synthesis and Biological Evaluation of Analogues of 7-Chloro-4,5-dihydro-4- oxo-8-(1,2,4-triazol-4-yl)-1,2,4-triazolo[1,5-<i>a</i>]quinoxaline-2-carboxylic Acid (TQX-173) as Novel Selective AMPA Receptor Antagonists
  作者：Daniela Catarzi、Vittoria Colotta、Flavia Varano、Francesca Romana Calabri、Guido Filacchioni、Alessandro Galli、Chiara Costagli、Vincenzo Carlà

  DOI：10.1021/jm030906q

  日期：2004.1.1

  In recent papers (Catarzi, D.; et al. J. Med. Chem. 2000, 43, 3824-3826; 2001, 44, 31573165) we reported chemical and biological studies on 4,5-dihydro-4-oxo-1,2,4-triazolo[1,5-a]-quinoxaline-2-carboxylates (TQXs) bearing different nitrogen-containing heterocycles at position-8. In particular, from these studies it emerged that both the 7-chloro-4,5-dihydro-4-oxo-8-(1,2,4-triazol-4-yl)-1,2,4-triazolo[1,5-a] quinoxaline-2-carboxylic acid TQX-173 (compound B) and its corresponding ethyl ester (compound A) were the most active and selective compounds of this series. In pursuing our investigation on the structure-activity relationships of these TQX derivatives, different electron-withdrawing groups (CF3, NO2) were introduced at position 7 on the TQX ring system, replacing the 7-chloro substituent of B and of other selected 8-heteroaryltriazoloquinoxaline-2-carboxylates previously described. All the newly synthesized compounds were biologically evaluated for their binding at the Gly/NMDA, AMPA, and KA high-affinity receptors. Gly/NMDA binding assays were performed to assess the selectivity of the reported compounds toward the AMPA receptor. Compounds endowed with micromolar binding affinity for the KA high-affinity binding site were also evaluated for their binding at the KA low-affinity receptor. Some selected compounds were also tested for their functional antagonist activity at the AMPA and NMDA receptor-ion channel complex. The results obtained in this study have pointed out that 4,5-dihydro-7-nitro-4-oxo-8-(3-carboxypyrrol-1-yl)-1,2,4-triazolo[1,5-alquinoxaline-2-carboxylic acid (9b) and its corresponding ethyl ester (9a) are the most potent and selective AMPA receptor antagonists reported to date among the TQX series.