TG41 | 850339-33-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: TG41
• 英文别名: ethyl 2-(4-bromophenyl)-1-(2,4-dichlorophenyl)-1H-imidazole-4-carboxylate；ethyl 2-(4-bromophenyl)-1-(2,4-dichlorophenyl)-1H-4-imidazolecarboxylate；Ethyl 2-(4-bromophenyl)-1-(2,4-dichlorophenyl)imidazole-4-carboxylate
• CAS: 850339-33-2
• 化学式: C₁₈H₁₃BrCl₂N₂O₂
• 分子量: 440.123
• InChiKey: ZXNGHKGWIDGULE-UHFFFAOYSA-N

物化性质

• 熔点：
  172-173 °C(Solv: methanol (67-56-1))
• 沸点：
  552.6±60.0 °C(Predicted)
• 密度：
  1.53±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.8
• 重原子数：
  25
• 可旋转键数：
  5
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.11
• 拓扑面积：
  44.1
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  TG41 在 sodium hydroxide 、 草酰氯 、 三乙胺 、 N,N-二甲基甲酰胺 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 2.5h， 生成 2-(4-Bromo-phenyl)-1-(2,4-dichloro-phenyl)-1H-imidazole-4-carboxylic acid 2-piperidin-1-yl-ethyl ester
  参考文献：
  名称：

  Synthesis, Structure−Activity Relationships at the GABA_A Receptor in Rat Brain, and Differential Electrophysiological Profile at the Recombinant Human GABA_A Receptor of a Series of Substituted 1,2-Diphenylimidazoles

  摘要：

  A series of new 1,2-diphenylimidazole derivatives (la-x) were synthesized and evaluated for their ability to potentiate gamma-aminobutyric acid (GABA)-evoked currents in Xenopus laevis oocytes expressing recombinant human GABAA receptors. Many of these compounds enhanced GABA action with potencies (EC50 = 0.19-19,mu M) and efficacies (maximal efficacies of up to 640%) similar to or greater than those of anesthetics such as etomidate, propofol, and alphaxalone. Structure- activity relationship analysis revealed that the presence of an ester moiety in the imidazole ring was required for full agonist properties, while modifications made in the phenyl rings affected potency and efficacy, with ethyl 2-(4-bromophenyl)-l-(2,4-dichlorophenyl)-1H4-imidazolecarboxylate showing the highest potency. These compounds potentiated the [H-3]GABA binding to rat brain membranes, suggesting a site of interaction different from that of GABA. As for etomidate, mutation of asparagine-265 in the beta 2 subunit of the GABA(A) receptor into serine reduced the ability of derivative 1i to modulate the GABA function.

  DOI：

  10.1021/jm049120y
• 作为产物：
  描述：

  2,4-二氯苯胺 在 三甲基铝 、 碳酸氢钠 、 对甲苯磺酸 作用下， 以 异丙醇 、 甲苯 为溶剂， 生成 TG41
  参考文献：
  名称：

  Synthesis, Structure−Activity Relationships at the GABA_A Receptor in Rat Brain, and Differential Electrophysiological Profile at the Recombinant Human GABA_A Receptor of a Series of Substituted 1,2-Diphenylimidazoles

  摘要：

  A series of new 1,2-diphenylimidazole derivatives (la-x) were synthesized and evaluated for their ability to potentiate gamma-aminobutyric acid (GABA)-evoked currents in Xenopus laevis oocytes expressing recombinant human GABAA receptors. Many of these compounds enhanced GABA action with potencies (EC50 = 0.19-19,mu M) and efficacies (maximal efficacies of up to 640%) similar to or greater than those of anesthetics such as etomidate, propofol, and alphaxalone. Structure- activity relationship analysis revealed that the presence of an ester moiety in the imidazole ring was required for full agonist properties, while modifications made in the phenyl rings affected potency and efficacy, with ethyl 2-(4-bromophenyl)-l-(2,4-dichlorophenyl)-1H4-imidazolecarboxylate showing the highest potency. These compounds potentiated the [H-3]GABA binding to rat brain membranes, suggesting a site of interaction different from that of GABA. As for etomidate, mutation of asparagine-265 in the beta 2 subunit of the GABA(A) receptor into serine reduced the ability of derivative 1i to modulate the GABA function.

  DOI：

  10.1021/jm049120y

文献信息

• Silver-Catalyzed [3+2] Cycloaddition of Azomethine Ylides with Isocyanides for Imidazole Synthesis
  作者：Zhongyan Hu、Jinhuan Dong、Xianxiu Xu

  DOI：10.1002/adsc.201700447

  日期：2017.10.25

  silver-catalyzed aerobic oxidative [3+2] cycloaddition of azomethine ylides with aryl or heteroaryl isocyanides has been developed. The reaction represents a novel protocol for the efficient and practical synthesis of 1,2-diarylimidazoles bearing a broad range of substituents in good to excellent yields under mild conditions. The practicability of this cycloaddition was shown by a gram-scale synthesis

  已开发出一种银催化的偶氮甲亚胺与芳基或杂芳基异氰酸酯的好氧氧化[3 + 2]环加成反应。该反应代表了在温和条件下以高至优收率高效，实用地合成带有广泛取代基的1,2-二芳基咪唑的新方法。该克分子加成反应的实用性通过克级合成和双环加成反应来显示，用于构建高度共轭的聚芳基咪唑体系。