5-trifluoromethylbenzofuroxan | 31984-04-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并恶二唑类
• 英文名称: 5-trifluoromethylbenzofuroxan
• 英文别名: 5-Trifluormethyl-benzofuroxan；1-oxido-5-(trifluoromethyl)-2,1,3-benzoxadiazol-1-ium
• CAS: 31984-04-0
• 化学式: C₇H₃F₃N₂O₂
• 分子量: 204.108
• InChiKey: ZEVCMBRBPONDGO-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  14
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.14
• 拓扑面积：
  51.5
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  5-trifluoromethylbenzofuroxan 在 三乙胺 作用下， 以 N,N-二甲基甲酰胺 、 乙腈 为溶剂， 反应 9.0h， 生成 Thiophene-2-carboxylic acid (3-cyano-1,4-dioxy-7-trifluoromethyl-quinoxalin-2-yl)-amide
  参考文献：
  名称：

  Heterocyclic-2-carboxylic Acid (3-Cyano-1,4-di-N-oxidequinoxalin-2-yl)amide Derivatives as Hits for the Development of Neglected Disease Drugs

  摘要：

  被忽视的疾病是一个重大的健康问题。据估计，全世界三分之一的人口感染了结核病（TB）。除肺结核外，南美锥虫病也影响着大约 2000 万人。喹喔啉类化合物对结核病和南美锥虫病有很强的抗病活性。现已制备出 40 种新的喹喔啉 1,4-di-N-oxide 衍生物，并对其进行了结核杆菌和南美锥虫病测试。羧酸喹喔啉 1,4-二-N-氧化物（CAQDOs）5 和 17 的 MIC 值与参考抗结核药物利福平的 MIC 值处于同一顺序。同时，CAQDOs 12 和 22 的 IC50 值与抗胆囊炎药物硝呋太尔制霉素的 IC50 值顺序相同。

  DOI：

  10.3390/molecules14062256
• 作为产物：
  描述：

  对三氟甲基苯胺 在 盐酸 、 sodium azide 、 硫酸 、 硝酸 、 sodium acetate 、 sodium nitrite 作用下， 以 溶剂黄146 、 甲苯 为溶剂， 反应 3.42h， 生成 5-trifluoromethylbenzofuroxan
  参考文献：
  名称：

  Hypoxia-Selective Agents Derived from Quinoxaline 1,4-Di-N-oxides

  摘要：

  Hypoxic cells, which are a common feature of solid tumors, but not normal tissues, are resistant to both anticancer drugs and radiation therapy. Thus the identification of drugs with selective toxicity toward hypoxic cells is an important objective in anticancer chemotherapy. The benzotriazine di-N-oxide (SR 4233, Tirapazamine) has been shown to be an efficient and selective cytotoxin for hypoxic cells. Since the bioreductive activation of Tirapazamine is thought to be due to the presence of the 1,4-di-N-oxide moiety, a series of 3-aminoquinoxaline-2-carbonitrile 1,4-di-N-oxides with a range of electron-donating and -withdrawing substituents in the 6- and/or 7- positions has been synthesized and evaluated for toxicity to hypoxic cells. Electrochemical studies of the quinoxaline di-N-oxides and Tirapazamine showed that as the electron-withdrawing nature of the 6(7)-substituent increases, the reduction potential becomes more positive and the compound is more readily reduced. Apart from the unsubstituted 6a and the 6,7-dimethyl derivative 6c, the quinoxaline di-N-oxides have reduction potentials significantly more positive than Tirapazamine (E(pc)-0.90 V). The most potent cytotoxins to cells in culture were the 6,7,-dichloro and 6,7-difluoro derivatives 6i and 6l, which were 30-fold more potent than Tirapazamine. The 6(7)-fluoro and 6(7)-chloro compounds, 6e and 6h, showed the greatest hypoxia selectivity. Four of the compounds, 6e, 6f, 6h and 6i, killed the inner cells of multicellular tumor spheroids in vitro. In vivo Balb/c mice tolerated a dose of these four compounds twice the size of that of Tirapazamine. This study demonstrates that quinoxaline 1,4-di-N-oxides could provide useful hypoxia-selective therapeutic agents.

  DOI：

  10.1021/jm00010a023

文献信息

• Quinoxaline derivatives
  申请人：Research Corporation

  公开号：US04343942A1

  公开（公告）日：1982-08-10

  The synthesis of quinoxaline and benzimidazole-N-oxides and of ester and amide derivatives of 3-hydroxy-2-quinoxalinecarboxylic acid by a novel process consisting of the reaction between a benzofuroxan and an activated methylene-containing compound under basic conditions.

  喹啉和苯并咪唑-N-氧化物的合成，以及3-羟基-2-喹啉羧酸的酯和酰胺衍生物的合成，通过一种新颖的过程实现，该过程包括在碱性条件下对苯并呋喃酰胺和含活性亚甲基的化合物进行反应。
• Synthesis and some properties of 2 H -benzimidazole 1,3-dioxides
  作者：Elena Chugunova、Vladimir Samsonov、Tatiana Gerasimova、Tatiana Rybalova、Irina Bagryanskaya

  DOI：10.1016/j.tet.2015.03.096

  日期：2015.9

  The synthesis of novel 2H-benzimidazole 1,3-dioxides on the basis of benzofuroxans interaction with alcohols in acids is described. The formation of a stable secondary carbocation from alcohol is necessary for formation of 2H-benzimidazole 1,3-dioxide while substituents in benzofuroxans don't prevent the reaction. Under heating 2H-benzimidazole 1,3-dioxides are rearranged to 3H-[2,1,4]benzoxadiazine

  描述了基于苯并呋喃类与酸中的醇相互作用的新型2 H-苯并咪唑1,3-二氧化物的合成。由醇形成稳定的仲碳阳离子对于形成2 H-苯并咪唑1,3-二氧化物是必要的，而苯并呋喃类中的取代基不会阻止反应。在加热下，将2 H-苯并咪唑1，3-二氧化物重排为3 H- [2,1,4]苯并恶二嗪4-氧化物，其稳定性取决于芳环中的取代基。在辐射下，恶二嗪被转化回2 H-苯并咪唑1，3-二氧化物。
• Novel process for the synthesis of quinoxaline and benzimidazole-N-oxides
  申请人：Research Corporation

  公开号：US04866175A1

  公开（公告）日：1989-09-12

  The synthesis of quinoxaline and benzimidazole-N-oxides and of ester amd amide derivatives of 3-hydroxy-2-quinoxalinecarboxylic acid by a movel process consisting of the reaction between a benzofuroxan and an activated methylene-containing compound under basic conditions.

  使用一种新型工艺，通过苯并呋喃氧化物和含有活性亚甲基的化合物在碱性条件下的反应，合成了喹喹啉和苯并咪唑-N-氧化物以及3-羟基-2-喹啉羧酸的酯和酰胺衍生物。
• Dual Antitubercular and Antileishmanial Profiles of Quinoxaline Di-N-Oxides Containing an Amino Acidic Side Chain
  作者：Juan F. González、María-Auxiliadora Dea-Ayuela、Lena Huck、José María Orduña、Francisco Bolás-Fernández、Elena de la Cuesta、Nazia Haseen、Ashraf Ali Mohammed、J. Carlos Menéndez

  DOI：10.3390/ph17040487

  日期：——

  We present a new category of quinoxaline di-N-oxides (QdNOs) containing amino acid side chains with dual antituberculosis and antileishmanial activity. These compounds were synthesized by combining a regioselective 2,5-piperazinedione opening and a Beirut reaction and were screened for their activity against Mycobacterium tuberculosis and the promastigote and amastigote forms of representative species

  我们提出了一类新的喹喔啉二氮氧化物 (QdNOs)，其含有氨基酸侧链，具有双重抗结核和抗利什曼胺活性。这些化合物是通过结合区域选择性 2,5-哌嗪二酮开环和贝鲁特反应来合成的，并筛选了它们对结核分枝杆菌以及利什曼原虫属代表性物种的前鞭毛体和无鞭毛体形式的活性。大多数 QdNO 表现出有希望的抗结核活性，IC50 值范围为 4.28 至 49.95 μM，与临床开发的药物相当。构效关系分析强调了芳环和侧链上取代基的重要性。抗利什曼原虫测试表明，一些选定的化合物表现出与阳性对照米替福辛相当的抗亚马逊利什曼原虫和杜氏利什曼原虫前鞭毛体的活性。值得注意的是，在针对亚马逊利什曼原虫的细胞内无鞭毛体测定中，发现一些化合物比米替福辛更有效且毒性更低。该化合物表现出最佳的双重抗结核和杀利什曼病特性以及良好的选择性指数4h，可以被视为一种热门化合物，为开发针对合并感染的综合疗法开辟了新的机会。
• Potential antileukemic and immunosuppressive drugs. 3. Effects of homocyclic ring substitution on the in vitro drug activity of 4-nitrobenzo-2,1,3-oxadiazoles (4-nitrobenzofurazans) and their N-oxides (4-nitrobenzofuroxans)
  作者：P. B. Ghosh、B. Ternai、M. W. Whitehouse

  DOI：10.1021/jm00273a012

  日期：1972.3