1-(1-oxyl-2,2,5,5-tetramethyl-2,5-dihydro-1H-pyrrol-3-ylmethyl)-1H-benzimidazole-4-carboxamide | 791591-47-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并咪唑类
• 英文名称: 1-(1-oxyl-2,2,5,5-tetramethyl-2,5-dihydro-1H-pyrrol-3-ylmethyl)-1H-benzimidazole-4-carboxamide
• 英文别名: 1-(2,2,5,5-tetramethyl-2,5-dihydro-1H-pyrrol-3-yl-methyl)-1H-benzoimidazole 4-carboxylic acid amide radical
• CAS: 791591-47-4
• 化学式: C₁₇H₂₁N₄O₂
• 分子量: 313.379
• InChiKey: PTUVUTNHXLRSDN-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.7
• 重原子数：
  23
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.41
• 拓扑面积：
  65.2
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  3-(bromomethyl)-2,5-dihydro-2,2,5,5-tetramethyl-1H-pyrrol-1-oxyl 、 (9ci)-1H-苯并咪唑-4-羧酰胺 在 potassium carbonate 作用下， 以 乙腈 为溶剂， 反应 3.0h， 以62%的产率得到1-(1-oxyl-2,2,5,5-tetramethyl-2,5-dihydro-1H-pyrrol-3-ylmethyl)-1H-benzimidazole-4-carboxamide
  参考文献：
  名称：

  New Poly(ADP-ribose) Polymerase-1 Inhibitors with Antioxidant Activity Based on 4-Carboxamidobenzimidazole-2-ylpyrroline and -tetrahydropyridine Nitroxides and Their Precursors

  摘要：

  4-Carboxamidobenzimidazoles were previously described as PARP inhibitor compounds. Here we report upon 4-carboxamido-1H-benzimidazoles substituted in the 2-position with nitroxides or their amine or hydroxylamine precursors. Among the new molecules, a highly active PARP inhibitor 4h (IC50 = 14 nM) was identified with antioxidant/radical scavenger activity. We concluded that in most cases sterically hindered amines are better PARP inhibitors than their oxidized form and structural changes in the 2-substituted 4-carboxamido-1H-benzimidazoles (such as N-substitution or changing the position of the carboxamide group) were detrimental to PARP inhibition activity but not to antioxidant activity. These results indicate the advantages of combining an antioxidant nitroxide or nitroxide precursor with a PARP inhibitor molecule to decrease or eliminate the deleterious processes initiated by reactive oxygen and reactive nitrogen species (ROS and RNS). The radical scavenging capability of 4h was demonstrated by EPR study of urine collected after drug administration.

  DOI：

  10.1021/jm801476y

文献信息

• New Poly(ADP-ribose) Polymerase-1 Inhibitors with Antioxidant Activity Based on 4-Carboxamidobenzimidazole-2-ylpyrroline and -tetrahydropyridine Nitroxides and Their Precursors
  作者：Tamás Kálai、Mária Balog、Alíz Szabó、Gergely Gulyás、József Jekő、Balázs Sümegi、Kálmán Hideg

  DOI：10.1021/jm801476y

  日期：2009.3.26

  4-Carboxamidobenzimidazoles were previously described as PARP inhibitor compounds. Here we report upon 4-carboxamido-1H-benzimidazoles substituted in the 2-position with nitroxides or their amine or hydroxylamine precursors. Among the new molecules, a highly active PARP inhibitor 4h (IC50 = 14 nM) was identified with antioxidant/radical scavenger activity. We concluded that in most cases sterically hindered amines are better PARP inhibitors than their oxidized form and structural changes in the 2-substituted 4-carboxamido-1H-benzimidazoles (such as N-substitution or changing the position of the carboxamide group) were detrimental to PARP inhibition activity but not to antioxidant activity. These results indicate the advantages of combining an antioxidant nitroxide or nitroxide precursor with a PARP inhibitor molecule to decrease or eliminate the deleterious processes initiated by reactive oxygen and reactive nitrogen species (ROS and RNS). The radical scavenging capability of 4h was demonstrated by EPR study of urine collected after drug administration.