2-[3-(4-phenylpiperazin-1-yl)propyl]-10,10a-dihydro-5H-imidazo[1,5-b]isoquinoline-1,3-dione | 1263808-58-7

• 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: 2-[3-(4-phenylpiperazin-1-yl)propyl]-10,10a-dihydro-5H-imidazo[1,5-b]isoquinoline-1,3-dione
• CAS: 1263808-58-7
• 化学式: C₂₄H₂₈N₄O₂
• 分子量: 404.512
• InChiKey: KQWUGQDFGOPROW-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  30
• 可旋转键数：
  5
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.42
• 拓扑面积：
  47.1
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  (+/-)-10,10a-Dihydroimidazo<1,5-b>isoquinoline-1,3(2H,5H)-dione 在 盐酸 、 三乙酰氧基硼氢化钠 、 potassium carbonate 、 溶剂黄146 作用下， 以 二氯甲烷 、 水 、 N,N-二甲基甲酰胺 、 丙酮 为溶剂， 反应 1.58h， 生成 2-[3-(4-phenylpiperazin-1-yl)propyl]-10,10a-dihydro-5H-imidazo[1,5-b]isoquinoline-1,3-dione
  参考文献：
  名称：

  New Synthesis of Tic-Hydantoins Sigma-1 Ligands and Pharmacological Evaluation on Cocaine-Induced Stimulant Effects

  摘要：

  新发现的伴侣蛋白σ1的激活涉及可卡因的精神刺激和成瘾效应的多个方面。开发选择性靶向σ1蛋白的配体可能会导致潜在强效抗可卡因药物的诞生。本文报道了一种新的、更趋同的合成途径，用于氨基酸侧链取代的乙内酰脲。合成了20种新的先导化合物类似物。其中没有一种在体外对σ1受体的亲和力超过先导化合物。然而，作为消旋体制备的三种化合物显示出对σ1受体的高体外亲和力和选择性。对它们药理活性的初步体内评价确定化合物22为一种能增强可卡因诱导的运动刺激作用的化合物，因此可作为潜在的高效σ1激动剂。

  DOI：

  10.2174/157340610793563956

文献信息

• Kinetics and mechanism of racemization of Tic-hydantoins, potent sigma-1 agonists
  作者：Anne-Claire Cabordery、Marion Toussaint、Nathalie Azaroual、Jean-Paul Bonte、Patricia Melnyk、Claud Vaccher、Catherine Foulon

  DOI：10.1016/j.tetasy.2011.01.015

  日期：2011.1

  The configurational stability of seven Tic-hydantoin sigma-1 agonists 1-7 was studied in organic and aqueous media to mimic conditions encountered during either their synthesis or their evaluation as a drug candidate (physico chemical property determination and pharmacological study). This study was performed from the enantiomers directly obtained by asymmetric synthesis (hydantoins 1,3-7) or after semi-preparative separation of the racemic obtained according to the same asymmetric procedure (thiohydantoin 2), by chiral HPLC. The racemization phenomenon was followed using recently validated chiral HPLC and capillary electrophoresis separation methods using derivatized cellulose and amylose chiral stationary phases (Chiralcel OD-H and Chiralpak AD) and highly sulphated cyclodextrins [highly S-beta-CD in the background electrolyte (BGE)], respectively. The kinetic parameters (rate constant, half-life and apparent free energy barriers) of racemization were calculated using a first-order reaction model. The influence of the acid-base content, pH in aqueous medium, concentration of the buffer, and temperature were investigated. The fastest racemization rates were observed under basic conditions. All hydantoins were shown to present the same magnitude of configurational stability, whereas thiohydantoin 2 was characterized by a high chiral instability, especially in ethanolic and aqueous media: its high instability in ethanol explains that a racemic mixture was obtained after asymmetric synthesis; its instantaneous racemization observed from the neutral pH makes the preparation of the enantiomers of 2 not relevant. Finally, the mechanism of racemization was elucidated using nuclear magnetic resonance (NMR): the comparison of the kinetics of the deuteration to the kinetics of the racemization suggests the involvement of a common reaction mechanism of S(E)1 type for hydantoin 1, while an S(E)2 type reaction seems to be involved for thiohydantoin 2. (C) 2011 Elsevier Ltd. All rights reserved.