5-piperazin-1-yl-1H-benzimidazole | 285979-12-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二嗪烷类
• 英文名称: 5-piperazin-1-yl-1H-benzimidazole
• 英文别名: 1H-Benzimidazole, 5-(1-piperazinyl)-；6-piperazin-1-yl-1H-benzimidazole
• CAS: 285979-12-6
• 化学式: C₁₁H₁₄N₄
• 分子量: 202.259
• InChiKey: BYRZMVHZMLASEL-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  15
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  44
• 氢给体数：
  2
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  二碳酸二叔丁酯 、 2-萘甲酸乙酯 、 5-piperazin-1-yl-1H-benzimidazole 在 4-二甲氨基吡啶 、 三乙胺 、 正丁基锂 作用下， 以 二氯甲烷 、 四氢呋喃 、 正己烷 为溶剂， 反应 1.0h， 生成 tert-butyl 4-[2-(2-naphthoyl)-1H-benzimidazol-5-yl]piperazine-1-carboxylate
  参考文献：
  名称：

  Benzimidazole Derivatives as New Serotonin 5-HT₆ Receptor Antagonists. Molecular Mechanisms of Receptor Inactivation

  摘要：

  On the basis of our previously described pharmacophore model for serotonin 5-HT6 receptor (5-HT6R) antagonists, we have designed, synthesized, and pharmacologically characterized a series of benzimidazole derivatives 1-20 that represent a new family of potent antagonists at the human 5-HT6R. Site-directed mutagenesis and a beta(2)-adrenoceptor-based homology model of the 5-HT6R were used to predict the mode of binding of antagonist SB-258585 and the new synthesized ligands. Substitution of W6.48, F6.52, or N6.55 by Ala fully impedes compound 4 to block 5-HT-induced activation. Thus, we propose that D3.32 in TM 3 anchors the protonated piperazine ring, the benzimidazole, ring expands parallel to EL 2 to hydrogen bond N6.55 in TM 6, and the aromatic ring is placed between TMs 3 and 5 in CH2-containing compounds and between TMs 3 and 6 in CO-containing compounds. This combined experimental and computational study has permitted to propose the molecular mechanisms by which the new benzimidazole derivatives act as 5-HT6R antagonists.

  DOI：

  10.1021/jm901672k
• 作为产物：
  描述：

  5-溴-1H-苯并咪唑 在 palladium diacetate 、 四丁基碘化铵 、 sodium hydride 、 caesium carbonate 、 R-(+)-1,1'-联萘-2,2'-双二苯膦 、 溶剂黄146 作用下， 以 四氢呋喃 、 水 、 甲苯 为溶剂， 反应 8.0h， 生成 5-piperazin-1-yl-1H-benzimidazole
  参考文献：
  名称：

  Pd(0) Amination of Benzimidazoles as an Efficient Method towards New (Benzimidazolyl)piperazines with High Affinity for the 5-HT1A Receptor

  摘要：

  New (benzimidazolyl)amines have been synthesized from 4- and 6-bromobenzimidazole derivatives via palladium-mediated amination reactions. Among them, (benzimidazol-4(7)-yl)piperazine derivatives have been shown to be a new family of high affinity 5-HT1A receptor ligands. (C) 2000 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4020(00)00225-8

文献信息

• Substituted benzimidazoles and benzopyrazoles as CCR(4) antagonists
  申请人：CHEMOCENTRYX, INC.

  公开号：US10647696B2

  公开（公告）日：2020-05-12

  Benzimidazole, benzopyrazole and benzotriazole compounds are provided which bind to CCR(4) and are useful for the treatment of diseases such as allergic diseases, autoimmune diseases, graft rejection and cancer.

  所提供的苯并咪唑、苯并吡唑和苯并三唑化合物与 CCR(4) 结合，可用于治疗过敏性疾病、自身免疫性疾病、移植物排斥和癌症等疾病。
• Benzimidazole Derivatives as New Serotonin 5-HT₆ Receptor Antagonists. Molecular Mechanisms of Receptor Inactivation
  作者：Tania de la Fuente、Mar Martín-Fontecha、Jessica Sallander、Bellinda Benhamú、Mercedes Campillo、Rocío A. Medina、Lucie P. Pellissier、Sylvie Claeysen、Aline Dumuis、Leonardo Pardo、María L. López-Rodríguez

  DOI：10.1021/jm901672k

  日期：2010.2.11

  On the basis of our previously described pharmacophore model for serotonin 5-HT6 receptor (5-HT6R) antagonists, we have designed, synthesized, and pharmacologically characterized a series of benzimidazole derivatives 1-20 that represent a new family of potent antagonists at the human 5-HT6R. Site-directed mutagenesis and a beta(2)-adrenoceptor-based homology model of the 5-HT6R were used to predict the mode of binding of antagonist SB-258585 and the new synthesized ligands. Substitution of W6.48, F6.52, or N6.55 by Ala fully impedes compound 4 to block 5-HT-induced activation. Thus, we propose that D3.32 in TM 3 anchors the protonated piperazine ring, the benzimidazole, ring expands parallel to EL 2 to hydrogen bond N6.55 in TM 6, and the aromatic ring is placed between TMs 3 and 5 in CH2-containing compounds and between TMs 3 and 6 in CO-containing compounds. This combined experimental and computational study has permitted to propose the molecular mechanisms by which the new benzimidazole derivatives act as 5-HT6R antagonists.
• Pd(0) Amination of Benzimidazoles as an Efficient Method towards New (Benzimidazolyl)piperazines with High Affinity for the 5-HT1A Receptor
  作者：Marı́a L López-Rodrı́guez、Bellinda Benhamú、David Ayala、J.Luis Rominguera、Marta Murcia、José A Ramos、Alma Viso

  DOI：10.1016/s0040-4020(00)00225-8

  日期：2000.5

  New (benzimidazolyl)amines have been synthesized from 4- and 6-bromobenzimidazole derivatives via palladium-mediated amination reactions. Among them, (benzimidazol-4(7)-yl)piperazine derivatives have been shown to be a new family of high affinity 5-HT1A receptor ligands. (C) 2000 Elsevier Science Ltd. All rights reserved.