1-<1-Oxyl-2,2,5,5-tetramethylpyrrolin-3-carboxy)-imidazol | 26405-33-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡咯啉
• 英文名称: 1-<1-Oxyl-2,2,5,5-tetramethylpyrrolin-3-carboxy)-imidazol
• 英文别名: 3-Imidazol-1'-ylcarbonyl-2,2,5,5-tetramethylpyrrolin-1-oxyl；N-(1-oxyl-2,2,5,5-tetramethyl-3-pyrroline-3-carbonyl)imidazolide
• CAS: 26405-33-4
• 化学式: C₁₂H₁₆N₃O₂
• 分子量: 234.278
• InChiKey: NWROGDRDCSPWQA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.5
• 重原子数：
  17
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  39.1
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  1-<1-Oxyl-2,2,5,5-tetramethylpyrrolin-3-carboxy)-imidazol 在 二异丁基氢化铝 作用下， 以 正己烷 、 二氯甲烷 为溶剂， 反应 2.0h， 以60%的产率得到3-formyl-2,2,5,5-tetramethyl-pyrroline-1-oxyl
  参考文献：
  名称：

  Nitroxyls; VI¹. Synthesis and Reactions of 3-Hydroxymethyl-2,2,5,5-tetramethyl-2,5-dihydropyrrole-1-oxyl and 3-Formyl Derivatives

  摘要：

  DOI：

  10.1055/s-1980-29268
• 作为产物：
  描述：

  咪唑 、 3-[(乙氧基羰基)羰氧基]-2,5-二氢-2,2,5,5-四甲基-1H-吡咯-1-氧基 以 甲苯 为溶剂， 反应 0.5h， 以64%的产率得到1-<1-Oxyl-2,2,5,5-tetramethylpyrrolin-3-carboxy)-imidazol
  参考文献：
  名称：

  Nitroxyls; VI¹. Synthesis and Reactions of 3-Hydroxymethyl-2,2,5,5-tetramethyl-2,5-dihydropyrrole-1-oxyl and 3-Formyl Derivatives

  摘要：

  DOI：

  10.1055/s-1980-29268

文献信息

• Methods for preparation of heterobifunctional nitroxides: α,β-unsaturated ketones, β-ketoesters, cyano-nitro-derivatives
  作者：H. Olga Hankovszky、Kálmán Hideg、László Lex、Gyula Kulcsár、H. Anna Halász

  DOI：10.1139/v82-208

  日期：1982.6.15

  The reactions of 1-oxyl-2,2,5,5-tetramethyl-3-pyrroline-3-carboxaldehyde (1), 1-oxyl-2,2,5,5-tetramethyl-3-cyano-3-pyrroline (2), ethyl 1-oxy(-2,2,5,5-tetramethyl-3-pyrroline-3-carbonyl carbonate (3), and N-(1-oxyl-2,2,5,5-tetramethyl-3-pyrroline-3-carbonyl)imidazolide (4) are investigated with several nucleophiles (dialkylcadmium, diethyl sodio-malonate, magnesium enolate of ethyl hydrogen malonate, nitromethane-anion) to obtain α,β-unsaturated ketones, β-ketoesters, or conjugated reaction products. Aldehyde 1 is reacted with several methyl ketones (acetylmethylene-triphenylphosphorane, acetophenone, 2-acetylpyridine, 4-phenyl-3-butyn-2-one) to give spin labeled polyenones. The reaction of 4-(1-oxyl-2,2,5,5-tetramethyl-3-pyrroline-3-yl)-2-buten-2-one (24a) with ethylenediamine gives 7,14-bis-(1-oxyl-2,2,5,5-tetramethyl-3-pyrroline-3-yl)-5,12-dimethyl-1,4,8,11-tetraazatetradeca-7,14-diene biradical (25).

  1-oxyl-2,2,5,5-四甲基-3-吡咯烯-3-甲醛（1）、1-oxyl-2,2,5,5-四甲基-3-氰基-3-吡咯烯（2）、乙基1-氧（-2,2,5,5-四甲基-3-吡咯烯-3-羰基碳酸酯（3）和N-（1-氧（-2,2,5,5-四甲基-3-吡咯烯-3-羰基）咪唑酰亚胺（4）与几种亲核试剂（二烷基镉、二乙基苏丹基丙二酸酯、乙基氢基丙二酸酯镁烯醇酸盐、硝基甲烷阴离子）进行反应，以获得α，β-不饱和酮，β-酮酯或共轭反应产物。醛1与几种甲基酮（乙酰亚甲基三苯基膦、苯乙酮、2-乙酰吡啶、4-苯基-3-丁炔-2-酮）反应，得到自旋标记的多烯酮。4-（1-氧（-2,2,5,5-四甲基-3-吡咯烯-3-基）-2-丁烯-2-酮（24a）与乙二胺的反应产生7,14-双（1-氧（-2,2,5,5-四甲基-3-吡咯烯-3-基）-5,12-二甲基-1,4,8,11-四氮杂十四烷-7,14-二烯双自由基（25）。
• Studies of Structure−Activity Relationship of Nitroxide Free Radicals and Their Precursors as Modifiers Against Oxidative Damage
  作者：Murali C. Krishna、William DeGraff、Olga H. Hankovszky、Cecília P. Sár、Tamás Kálai、József Jekő、Angelo Russo、James B. Mitchell、Kálmán Hideg

  DOI：10.1021/jm9802160

  日期：1998.8.1

  The protective effects of stable nitroxides, as well as their hydroxylamine and amine precursors, have been tested in Chinese hamster V79 cells subjected to H2O2 exposure at fixed concentration or exposure to ionizing radiation. Cytotoxicity was evaluated by monitoring the viability of the cells assessed by the clonogenic assay. The compounds tested at fixed concentration varied in terms of ring size, oxidation state, and ring substituents. Electrochemical studies were carried out to measure the redox midpoint potentials. The studies show that in the case of protection against H2O2 exposure, the protection was determined by the ring size, oxidation state, and redox midpoint potentials. In general the protection factors followed the order nitroxides > hydroxylamines > amines. Both the six-membered ring nitroxides and substituted five-membered ring nitroxides were efficient protectors. For six-membered ring nitroxides, the compounds exhibiting the lowest midpoint potentials exhibited maximal protection. In the case of X-radiation, nitroxides were the most protective though some hydroxylamines were also efficient. The amines were in some cases found to sensitize the toxicity of aerobic radiation exposure. The protection observed by the nitroxides was not dependent on the ring size. However, the ring substituents had significant influence on the protection. Compounds containing a basic side chain were found to provide enhanced protection. The results in this study suggest that these compounds are novel antioxidants which can provide cytoprotection in mammalian cells against diverse types of oxidative insult and identify structural determinants optimal for protection against individual types of damage.
• Nitroxyls; VI¹. Synthesis and Reactions of 3-Hydroxymethyl-2,2,5,5-tetramethyl-2,5-dihydropyrrole-1-oxyl and 3-Formyl Derivatives
  作者：K. Hideg、H. O. Hankovszky、L. Lex、Gy. Ku;csár

  DOI：10.1055/s-1980-29268

  日期：——