2-(2-aminoethyl)-5-nitrohydroquinone | 41241-39-8

• 分子结构分类: 有机化合物 - 苯类化合物 - 酚类
• 英文名称: 2-(2-aminoethyl)-5-nitrohydroquinone
• 英文别名: 2-(2-Aminoethyl)-5-nitrobenzene-1,4-diol
• CAS: 41241-39-8
• 化学式: C₈H₁₀N₂O₄
• 分子量: 198.178
• InChiKey: PYVMPIIVMMPROM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.9
• 重原子数：
  14
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  112
• 氢给体数：
  3
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  2,5-二甲氧基苯乙胺 在 氢溴酸 、 硝酸 、 溶剂黄146 作用下， 反应 7.0h， 生成 2-(2-aminoethyl)-5-nitrohydroquinone
  参考文献：
  名称：

  Synthesis and physicochemical and neurotoxicity studies of 1-(4-substituted-2,5-dihydroxyphenyl)-2-aminoethane analogs of 6-hydroxydopamine

  摘要：

  In an attempt to evaluate the possible relationship between the neurotoxicity of 6-hydroxydopamine and the redox properties and electrophilic reactivity of the 6-hydroxydopamine-p-hydroquinone/p-quinone system, we have synthesized a series of 6-hydroxydopamine analogues in which the C4-hydroxy group is replaced with various electron-donating and electron-withdrawing substituents. With the aid of cyclic voltammetry, the formal oxidation potentials (E degrees ') for the p-hydroquinone/p-quinone redox couples and the rates of cyclization of the p-quinones to the corresponding p-iminoquinones were determined. As expected, electron-rich p-hydroquinones were easily oxidized to the p-quinones, which underwent cyclization slowly, whereas the oxidation of electron-poor p-hydroquinones required higher voltages and yielded p-quinones, which cyclized readily at pH 7.4. The neurotoxic potential of these compounds showed that in vivo destruction of noradrenergic terminals, as measured by inhibition of norepinephrine uptake by rat heart slices, occurred only with those analogues bearing electron-donating substituents. Potent neurotoxic properties were associated only with the 4-amino and 4-hydroxy derivatives, both of which form p-quinones, which do not cyclize readily at pH 7.4. These results support the thesis that the p-quinone derived from 6-hydroxydopamine may be an important species in the mediation of the neurodestruction caused by 6-hydrodopamine.

  DOI：

  10.1021/jm00370a014

文献信息

• Synthesis and physicochemical and neurotoxicity studies of 1-(4-substituted-2,5-dihydroxyphenyl)-2-aminoethane analogs of 6-hydroxydopamine
  作者：Alice C. Cheng、Neal Castagnoli

  DOI：10.1021/jm00370a014

  日期：1984.4

  In an attempt to evaluate the possible relationship between the neurotoxicity of 6-hydroxydopamine and the redox properties and electrophilic reactivity of the 6-hydroxydopamine-p-hydroquinone/p-quinone system, we have synthesized a series of 6-hydroxydopamine analogues in which the C4-hydroxy group is replaced with various electron-donating and electron-withdrawing substituents. With the aid of cyclic voltammetry, the formal oxidation potentials (E degrees ') for the p-hydroquinone/p-quinone redox couples and the rates of cyclization of the p-quinones to the corresponding p-iminoquinones were determined. As expected, electron-rich p-hydroquinones were easily oxidized to the p-quinones, which underwent cyclization slowly, whereas the oxidation of electron-poor p-hydroquinones required higher voltages and yielded p-quinones, which cyclized readily at pH 7.4. The neurotoxic potential of these compounds showed that in vivo destruction of noradrenergic terminals, as measured by inhibition of norepinephrine uptake by rat heart slices, occurred only with those analogues bearing electron-donating substituents. Potent neurotoxic properties were associated only with the 4-amino and 4-hydroxy derivatives, both of which form p-quinones, which do not cyclize readily at pH 7.4. These results support the thesis that the p-quinone derived from 6-hydroxydopamine may be an important species in the mediation of the neurodestruction caused by 6-hydrodopamine.