ethyl 7-methoxy-3-methylquinoxaline-2-carboxylate 1,4-dioxide | 37387-37-4

• 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: ethyl 7-methoxy-3-methylquinoxaline-2-carboxylate 1,4-dioxide
• 英文别名: 2-carboethoxy-3-methyl-7-methoxyquinoxaline 1,4-dioxide；7-methoxy-3-methyl-1,4-dioxy-quinoxaline-2-carboxylic acid ethyl ester；Ethyl 7-methoxy-3-methyl-4-oxido-1-oxoquinoxalin-1-ium-2-carboxylate
• CAS: 37387-37-4
• 化学式: C₁₃H₁₄N₂O₅
• 分子量: 278.265
• InChiKey: WVRYZIXOSJVVRR-UHFFFAOYSA-N

物化性质

• 熔点：
  157-158 °C(Solv: methanol (67-56-1))
• 沸点：
  481.7±55.0 °C(Predicted)
• 密度：
  1.33±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  0.8
• 重原子数：
  20
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.31
• 拓扑面积：
  81.9
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为产物：
  描述：

  乙酰乙酸乙酯 、 5-甲氧基苯并呋喃-1-氧化物 在 basic medium 作用下， 以 甲醇 为溶剂， 以16%的产率得到ethyl 7-methoxy-3-methylquinoxaline-2-carboxylate 1,4-dioxide
  参考文献：
  名称：

  苯并呋喃与固体催化剂表面的羰基化合物反应

  摘要：

  通过将组分吸附在硅胶或分子筛的表面上以形成2，3-二取代的喹喔啉1，4-二氧化物，苯并呋喃喃1a与羰基化合物的环缩反应可以平稳有效地进行。当在90°下使用分子筛3A（粉末）进行反应时，实际反应时间减少到0.5-2小时。尽管Duerckheimer报告了当使5-甲氧基苯并呋喃1e与乙酰乙酸乙酯2j反应时仅分离出7-取代的喹喔啉1,4-二氧化物，但通过我们的方法，它仅生成了6-甲氧基异构体作为反应产物。5-羧基苯并呋喃聚糖1f不与羰基化合物反应。

  DOI：

  10.1002/jhet.5570300602

文献信息

• Synthesis of New Quinoxaline-2-carboxylate 1,4-Dioxide Derivatives as Anti-<i>Mycobacterium </i><i>t</i><i>uberculosis</i> Agents
  作者：Andrés Jaso、Belén Zarranz、Ignacio Aldana、Antonio Monge

  DOI：10.1021/jm049952w

  日期：2005.3.1

  Twenty-nine new 6(7)-substituted quinoxaline-2-carboxylate 1,4-dioxide derivatives were synthesized and evaluated for in vitro antituberculosis activity. In general, the in vitro activity is significantly affected by substituents on the quinoxaline nucleus. It has been observed that the presence of a chloro, methyl, or methoxy group in position 7 of the benzene moiety reduces the MIC and IC50 values. However, antituberculosis activity principally depends on the substituents in the carboxylate group, improving in the following order: benzyl > ethyl > 2-methoxyethyl > allyl > tert-butyl. Fourteen compounds have been selected for macrophage assay, and the results show that ethyl and benzyl 3-methylquinoxaline-2-carboxylate 1,4-dioxide derivatives with the chlorine group in position 7 of the benzene moiety (compounds 10 and 26) and the unsubstituted derivatives (compounds 11 and 27) have good antitubercular activity, including activity in macrophages. In addition, compounds 7 and 28 (the only ones tested up to now) are active against drug-resistant strains of M. tuberculosis H(37)Rv. In conclusion, the potency, selectivity, and low cytotoxicity of these compounds make them valid leads for synthesizing new compounds that possess better activity.
• The reactions of benzofuroxan with carbonyl compounds on the surface of solid catalysts
  作者：Tohru Takabatake、Yumiko Hasegawa、Minoru Hasegawa

  DOI：10.1002/jhet.5570300602

  日期：1993.12

  The cyclocondensations of benzofuroxan 1a with carbonyl compounds were smoothly and efficiently carried out by the adsorption of the components on the surface of silica gel or a molecular sieve to form a 2,3-disubstituted quinoxaline 1,4-dioxide. When the reactions using a molecular sieve 3A (powder) were carried out at 90°, the actual reaction times were reduced to 0.5-2 hours. Although Duerckheimer

  通过将组分吸附在硅胶或分子筛的表面上以形成2，3-二取代的喹喔啉1，4-二氧化物，苯并呋喃喃1a与羰基化合物的环缩反应可以平稳有效地进行。当在90°下使用分子筛3A（粉末）进行反应时，实际反应时间减少到0.5-2小时。尽管Duerckheimer报告了当使5-甲氧基苯并呋喃1e与乙酰乙酸乙酯2j反应时仅分离出7-取代的喹喔啉1,4-二氧化物，但通过我们的方法，它仅生成了6-甲氧基异构体作为反应产物。5-羧基苯并呋喃聚糖1f不与羰基化合物反应。