(E)-6-chloro-3-(2-pyridin-3-ylvinyl)-1H-indole | 1316694-89-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吲哚及其衍生物
• 英文名称: (E)-6-chloro-3-(2-pyridin-3-ylvinyl)-1H-indole
• 英文别名: 6-chloro-3-[(E)-2-pyridin-3-ylethenyl]-1H-indole
• CAS: 1316694-89-9
• 化学式: C₁₅H₁₁ClN₂
• 分子量: 254.719
• InChiKey: PWUSXYHXDCAKDO-ONEGZZNKSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.9
• 重原子数：
  18
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  28.7
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  6-氯吲哚-3-甲醛 、 吡啶-3-乙酸盐酸盐 在 三乙胺 、 哌啶 作用下， 以 甲醇 为溶剂， 反应 2.17h， 以31%的产率得到(E)-6-chloro-3-(2-pyridin-3-ylvinyl)-1H-indole
  参考文献：
  名称：

  Tryptophan 2,3-Dioxygenase (TDO) Inhibitors. 3-(2-(Pyridyl)ethenyl)indoles as Potential Anticancer Immunomodulators

  摘要：

  Tryptophan catabolism mediated by indoleamine 2,3-dioxygenase (IDO) is an important mechanism of peripheral immune tolerance contributing to tumoral immune resistance. IDO inhibition is thus an active area of research in drug development. Recently, our group has shown that tryptophan 2,3-dioxygenase (TDO), an unrelated hepatic enzyme also catalyzing the first step of tryptophan degradation, is also expressed in many tumors and that this expression prevents tumor rejection by locally depleting tryptophan. Herein, we report a structure- activity study on a series of 3-(2-(pyridyl)ethenyl)indoles. More than 70 novel derivatives were synthesized, and their TDO inhibitory potency was evaluated. The rationalization of the structure-activity relationships (SARs) revealed essential features to attain high TDO inhibition and notably a dense H-bond network mainly involving His(55) and Thr(254) residues. Our study led to the identification of a very promising compound (58) displaying good TDO inhibition (K-i = 5.5 mu M), high selectivity, and good oral bioavailability. Indeed, 58 was chosen for preclinical evaluation.

  DOI：

  10.1021/jm2006782

文献信息

• Tryptophan 2,3-Dioxygenase (TDO) Inhibitors. 3-(2-(Pyridyl)ethenyl)indoles as Potential Anticancer Immunomodulators
  作者：Eduard Dolušić、Pierre Larrieu、Laurence Moineaux、Vincent Stroobant、Luc Pilotte、Didier Colau、Lionel Pochet、Benoît Van den Eynde、Bernard Masereel、Johan Wouters、Raphaël Frédérick

  DOI：10.1021/jm2006782

  日期：2011.8.11

  Tryptophan catabolism mediated by indoleamine 2,3-dioxygenase (IDO) is an important mechanism of peripheral immune tolerance contributing to tumoral immune resistance. IDO inhibition is thus an active area of research in drug development. Recently, our group has shown that tryptophan 2,3-dioxygenase (TDO), an unrelated hepatic enzyme also catalyzing the first step of tryptophan degradation, is also expressed in many tumors and that this expression prevents tumor rejection by locally depleting tryptophan. Herein, we report a structure- activity study on a series of 3-(2-(pyridyl)ethenyl)indoles. More than 70 novel derivatives were synthesized, and their TDO inhibitory potency was evaluated. The rationalization of the structure-activity relationships (SARs) revealed essential features to attain high TDO inhibition and notably a dense H-bond network mainly involving His(55) and Thr(254) residues. Our study led to the identification of a very promising compound (58) displaying good TDO inhibition (K-i = 5.5 mu M), high selectivity, and good oral bioavailability. Indeed, 58 was chosen for preclinical evaluation.
• Synthesis, crystal structures and electronic properties of isomers of chloro-pyridinylvinyl-1H-indoles
  作者：Laurence Moineaux、Sophie Laurent、Jérémy Reniers、Eduard Dolušić、Moreno Galleni、Jean-Marie Frère、Bernard Masereel、Raphaël Frédérick、Johan Wouters

  DOI：10.1016/j.ejmech.2012.04.033

  日期：2012.8

  Three isomers of chloro-3-(2-pyridin-3-ylvinyl)-1H-indole were synthesized and tested as inhibitors of human tryptophan 2,3-dioxygenase (hTDO). The crystal structures of two of them were solved by X-ray diffraction. The solubility of the molecules also was determined experimentally. The molecular electrostatic potentials and dipole moments of the three isomers were calculated by ab initio quantum mechanics (HF/6-311G).The single crystal X-ray analyses reveal non-planar structures. This non-coplanarity is retained during docking of the compounds into a model of hTDO, the molecular target of this series. The position of the Cl atom does not significantly affect the electronic delocalization. Nevertheless, the position of the Cl atom produces a local variation of bond lengths inducing different dipole moments for these isomers. Variations in dipole moments are consistent with the different melting points and crystal packings. Differences in aqueous solubilities are best explained by subtle changes in H-bonds resulting from different accessibilities of the indole NH's due to steric effects of the Cl substituent. The non-coplanarity plays an important role in the crystalline packing of the molecules in contrast to the position of the Cl. This study leads to a better understanding of the structural and electronic characteristics of this chemical series and can potentially help to better understand their inhibitory activity. (C) 2012 Elsevier Masson SAS. All rights reserved.