1,3-dihydroxy-2-(4-nitrophenyl)-4,4,5,5-tetramethylimidazolidine | 38577-50-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑烷类
• 英文名称: 1,3-dihydroxy-2-(4-nitrophenyl)-4,4,5,5-tetramethylimidazolidine
• 英文别名: 1,3-Dihydroxy-2-(4-nitrophenyl)-4,4,5,5-tetra-methylimidazolidine；1,3-dihydroxy-4,4,5,5-tetramethyl-2-(4-nitrophenyl)imidazolidine
• CAS: 38577-50-3
• 化学式: C₁₃H₁₉N₃O₄
• 分子量: 281.312
• InChiKey: UCELVIMGFWAXKQ-UHFFFAOYSA-N

物化性质

• 熔点：
  154-156 °C
• 沸点：
  449.9±45.0 °C(Predicted)
• 密度：
  1.292±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.8
• 重原子数：
  20
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.54
• 拓扑面积：
  92.8
• 氢给体数：
  2
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  1,3-dihydroxy-2-(4-nitrophenyl)-4,4,5,5-tetramethylimidazolidine 在 lead dioxide 作用下， 以 甲醇 为溶剂， 反应 3.0h， 以73%的产率得到2-(4-硝基苯基)-4,4,5,5-四甲基咪唑啉-3-氧化物-1-氧基
  参考文献：
  名称：

  作为自由基清除剂的新型2-取代硝酰基硝基氧化合物：合成，生物学评估和结构-活性关系。

  摘要：

  为了开发具有增强的自由基清除剂性能的更有效的小分子，我们设计并合成了一系列硝酰基硝基氧衍生物4a-h。基于Ach诱导的血管舒张测定法发现了前导化合物4f。基于该支架的进一步化学修饰提供了一系列新的2-取代的苯基亚硝酰基硝基氧化物衍生物6a-s。基于PC12细胞存活测定法，新合成的化合物6a-s具有改善的自由基清除剂的活性。就NO，H（2）O（2）和OH的清除能力而言，化合物6g，n，o和s是一些最有效的化合物。2-取代的苯基亚硝基硝基氮氧化物具有较高的自由基清除活性，带有给电子基团（EDG）。相比之下，吸电子基团（EWG）引入芳环导致其自由基清除活性急剧下降。这些结果表明，芳香环的给电子基团（EDG）可能是影响这些化合物清除自由基行为的重要因素，清除自由基的能力很大程度上取决于苯环的位置和电子性质。取代基。新型的2-取代的硝酰基氮氧化物的增强的自由基清除能力可能是对抗ROS（活性氧）/ R

  DOI：

  10.1016/j.bmc.2006.04.016
• 作为产物：
  描述：

  2,3-二甲基-2,3-丁二胺 在 碳酸氢钠 、 间氯过氧苯甲酸 作用下， 以 乙醚 、 二氯甲烷 为溶剂， 生成 1,3-dihydroxy-2-(4-nitrophenyl)-4,4,5,5-tetramethylimidazolidine
  参考文献：
  名称：

  Nitronyl 和亚氨基氮氧化物：Ullman 程序的改进和关于新的有效合成路线的报告

  摘要：

  硝酰基和亚氨基氮氧化物的合成已被重新研究，目的是提高产量并为新结构提供机会。乌尔曼路线的关键中间体 2,3-双（羟基氨基）-2,3-二甲基丁烷的形成条件已经过仔细研究，并提出了一种新方法，该方法可以提供非常纯的游离碱和高达 60% 的产量。介绍了该中间体的完整表征，包括 X 射线晶体结构。描述了通过 2,3-二氨基-2,3-二甲基丁烷和相应的咪唑烷的替代合成路线，该路线绕过了双（羟基氨基）化合物的精细合成。结果表明，3-氯过苯甲酸是一种有效的氧化剂，可将充分取代的咪唑烷转化为硝酰基硝基氧，以高产率获得。报道了这种新路线的潜力，即在咪唑啉环的 4 和 5 位具有两个乙基取代基的新硝酰基氮氧化物。讨论了这两条路线的范围和限制。

  DOI：

  10.1002/1521-3765(20010504)7:9<2007::aid-chem2007>3.0.co;2-7

文献信息

• A class of novel nitronyl nitroxide labeling basic and acidic amino acids: Synthesis, application for preparing ESR optionally labeling peptides, and bioactivity investigations
  作者：Jianwei Zhang、Ming Zhao、Guohui Cui、Shiqi Peng

  DOI：10.1016/j.bmc.2008.01.022

  日期：2008.4.1

  beta-carboxyl of L-Asp-OH and the gamma-carboxyl of L-Glu-OH with ethylamino as a linker. It was explored that the synthetic 30 novel ESR labeling amino acid derivatives were stable enough to the reaction conditions of peptide synthesis. Their incorporation led to 12 novel ESR optionally labeling PAK, RGDS, RGDV, and ECG. A series of NO related chemical tests, the in vitro and in vivo assays of these

  瞄准任选的ESR标记，将2-（4'-羟基）苯基-4,4,5,5-四甲基咪唑啉-3-氧化物-1-氧基引入到L-Arg-OH的胍基中，以甲基羧基为连接基的L-Lys-OH，和以乙氨基为连接基的L-Asp-OH的β-羧基和L-Glu-OH的γ-羧基。研究表明，合成的30种新型ESR标记氨基酸衍生物对肽合成的反应条件足够稳定。他们的加入导致了12种新颖的ESR，可选地标记了PAK，RGDS，RGDV和ECG。一系列与NO相关的化学测试，这些肽的体外和体内测定证实了该策略是可行的。
• Preparation and Characterization of New Chiral Nitronyl Nitroxides Bearing a Stereogenic Center in the Imidazolyl Framework
  作者：Satoshi Shimono、Rui Tamura、Naohiko Ikuma、Tatsuya Takimoto、Naoyuki Kawame、Osamu Tamada、Naoko Sakai、Hiroaki Matsuura、Jun Yamauchi

  DOI：10.1021/jo0354443

  日期：2004.1.1

  synthetic procedure for optically active and racemic α-nitronyl nitroxides (α-NNs) having a stereogenic center at the 4-position of the imidazolyl ring is described. This procedure consists of (1) the synthesis of a dissymmetric vic-dinitro compound by Kornblum reaction, (2) the enantiomeric resolution of the racemate by a diastereomer method for obtaining the optically active sample, (3) the quick reduction

  描述了在咪唑基环的4-位具有立体异构中心的旋光和外消旋的α-亚硝基硝基氮氧化物（α-NNs）的合成方法。此过程包括：（1）一个不对称的合成VIC -dinitro化合物由科恩布卢姆反应，（2）外消旋体通过用于获得光学活性样品非对映体方法的对映体拆分，（3）快速还原光学活性的或外消旋VIC -dinitro化合物与双（羟基氨基）用Al / Hg的衍生物，（4）双（羟基氨基）化合物与醛的无溶剂缩合，得到1,3- dihydroxyimidazolidine，和（5）的NaIO 4水溶液对α-NN前体的最终氧化。（ - ） - （1光学活性α-神经网络的绝对构型通过用的X射线晶体结构相关分配小号，4 - [R ）的光学活性的-camphanic酸酯衍生物VIC -dinitro化合物。通过CD光谱法和蒙特卡罗方法将能量最小化，发现旋光性α-NNs的分子构象在溶液和固态中都折叠。分别通过EPR光谱
• TPAP/NMO System as a Novel Method for the Synthesis of Nitronyl Nitroxide Radicals
  作者：Lapo Gorini、Andrea Caneschi、Stefano Menichetti

  DOI：10.1055/s-2006-939045

  日期：——

  An easy oxidation of dihydroxyimidazolidine derivatives to nitronyl nitroxide radicals (NNRs) can be achieved using the tetra-N-propylamonium perruthenate/N-methylmorpholine N-oxide (TPAP/NMO) system. The procedure offers several advantages in terms of simplicity, yield, cost and ‘green’ chemistry.

  利用四-N-丙基铵过钌酸盐/N-甲基吗啉 N-氧化物（TPAP/NMO）体系，可以轻松地将二羟基咪唑烷衍生物氧化成硝基亚硝基自由基（NNRs）。该方法在操作简单、产量高、成本低和 "绿色 "化学方面具有诸多优势。
• Aminonitrone-N-hydroxyaminoimine tautomeric equilibrium in the series of 1-hydroxy-2-imidazolines
  作者：Sergey A. Popov、Rodion V. Andreev、Galina V. Romanenko、Viktor I. Ovcharenko、Vladimir A. Reznikov

  DOI：10.1016/j.molstruc.2004.02.028

  日期：2004.7

  A series of 2-substituted 1-hydroxy-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazoles have been synthesized. Various effects on the state of the aminonitrone-N-hydroxyaminoimine tautomeric equilibrium, including solvent effects and substituent effect in the 2 position of heterocycle, have been studied. (C) 2004 Elsevier B.V. All rights reserved.
• Novel 1-oxyl-2-substitutedphenyl-4,4,5,5-tetramethylimidazolines: Synthesis, selectively analgesic action, and QSAR analysis
  作者：Ming Zhao、Zheng Li、Li Peng、Yu-Rong Tang、Chao Wang、Ziding Zhang、Shiqi Peng

  DOI：10.1016/j.bmc.2007.02.023

  日期：2007.4

  Based on the knowledge that imidazoline can result in analgesic action due to its selective binding with the prostacyclin receptor, 20 1-oxyl-2-substitutedphenyl-4,4,5,5-tetramethylimidazolines (3a-t) were prepared in moderate yields. At 0.13 mmol/kg dose, their in vivo analgesic activities were evaluated after the mice were administered at 30, 60, 90, and 150 min. Compared with the pain threshold (12.27 +/- 9.56-17.71 +/- 7.00%) of normal saline (NS) receiving mice, the pain threshold (23.42 +/- 8.14% to 102.58 +/- 10.66%) of 3a-t receiving mice increases significantly. Considering a prostacyclin receptor targeting analgesic agent usually had bleeding action and to appraise the bleeding risk, the in vivo tail bleeding time of 1.30 mmol/kg 3a-t receiving mice was found to be ranged from 116.3 +/- 8.2 s to 120.3 +/- 9.2 s, which was substantially equal to that (117.8 +/- 8.4 s to 119.0 +/- 8.6 s) of NS receiving mice. Based on the possibility of imidazoline acting as vasodilator, the in vitro vasorelaxations of 3a-t were tested using the rat aortic strip model. When the aortic strip contracted by noradrenaline (NE, final concentration 10(-7) mol/l) was treated with 3a-t (final concentration 5 x 10(-4) mol/l), only lower percentage inhibitions (6.55 +/- 5.70-37.40 +/- 4.07%) were recorded, implying that the vasorelaxation of 3a-t was neglectable. By selecting appropriate molecular descriptors generated from e-dragon server, the QSAR model of the analgesic activities of 3a-t was constructed using the multiple linear regression method. The established QSAR model showed reasonable accuracy and thus it is promising to be used for screening new 1-oxyl-2-substitutedphenyl-4,4,5,5-tetramethylimidazoline derivatives as analgesic agents. (c) 2007 Elsevier Ltd. All rights reserved.