6-bromomelatonine

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: 6-bromomelatonine
• 英文别名: N-(2-(6-bromo-5-methoxy-1H-indol-3-yl)ethyl)acetamide；N-[2-(6-bromo-5-methoxy-1H-indol-3-yl)ethyl]acetamide
• 化学式: C₁₃H₁₅BrN₂O₂
• 分子量: 311.178
• InChiKey: BLAZICCSVRJDRH-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  18
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.31
• 拓扑面积：
  54.1
• 氢给体数：
  2
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  6-bromomelatonine 在 N-溴代丁二酰亚胺(NBS) 、 溶剂黄146 作用下， 反应 4.0h， 以25%的产率得到N-acetyl-2,6-dibromo-5-methoxytryptamine
  参考文献：
  名称：

  Melatonin Receptor Ligands:  Synthesis of New Melatonin Derivatives and Comprehensive Comparative Molecular Field Analysis (CoMFA) Study

  摘要：

  The CoMFA methodology was applied to melatonin receptor ligands in order to establish quantitative structure-affinity relationships. One hundred thirty-three compounds were considered: they were either collected from literature or newly synthesized in order to gain information about the less explored positions. To this end, various melatonin derivatives were prepared and their affinity for quail optic tecta melatonin receptor was tested. Compounds were aligned on the putative active conformation of melatonin proposed by our previously reported pharmacophore search, and their relative affinities were calculated from the displacement of 2-[I-125]-iodomelatonin on different tissues expressing aMT receptors. Compounds were grouped into three sets according to their topology. Subset A: melatonin-like compounds; subset B: N-acyl-2-amino-8-methoxytetralins and related compounds; subset C: N-acyl-phenylalkylamines and related compounds. CoMFA models were derived for each set, using the steric, electrostatic, and lipophilic fields as structural descriptors; the PLS analyses were characterized by good statistical parameters, taking into account the heterogeneity of the binding data, obtained with different experimental protocols. From the CoMFA model for the melatonin-like compounds, besides the well-known positive effect of 2-substitution, a low steric tolerance for substituents in 1, 6, and 7, and a negative effect of electron-rich 4-substituents were observed; the information provided by the newly synthesized compounds was essential for these results. Moreover, a comprehensive model for the 133 compounds, accounting for a common alignment and a common mode of interaction at the melatonin receptor, was derived (Q(2) = 0.769, R-2 = 0.905). This model validates our previously reported pharmacophore search and offers a clear depiction of the structure-affinity relationships for the melatonin receptor ligands.

  DOI：

  10.1021/jm9810093
• 作为产物：
  描述：

  褪黑素 在 氢氟酸 、 五氟化锑 、 sodium bromide 作用下， 反应 2.0h， 以45%的产率得到6-bromomelatonine
  参考文献：
  名称：

  含氮（杂）芳烃与超强酸的互补位点选择性卤化。

  摘要：

  与经典的芳香族取代反应互补的芳烃的位点选择性官能化仍然是有机合成中的长期追求。通过利用氧化过程中的ion离子的产生和HF / SbF 5中含氮功能的质子化，芳香胺的经典惰性Csp 2 -H键发生氯化和碘化。此外，分子的超强酸促进（聚）质子化作用起到保护作用，有利于天然生物碱和活性药物成分的后期选择性卤化

  DOI：

  10.1002/chem.202000902

文献信息

• LIU Y.-Y.; MINICH M., J. LABELLED COMPOUNDS AND RADIOPHARM., 1981, 18, NO 6, 791-797
  作者：LIU Y.-Y.、 MINICH M.

  DOI：——

  日期：——
• Melatonin Receptor Ligands:  Synthesis of New Melatonin Derivatives and Comprehensive Comparative Molecular Field Analysis (CoMFA) Study
  作者：Marco Mor、Silvia Rivara、Claudia Silva、Fabrizio Bordi、Pier Vincenzo Plazzi、Gilberto Spadoni、Giuseppe Diamantini、Cesarino Balsamini、Giorgio Tarzia、Franco Fraschini、Valeria Lucini、Romolo Nonno、Bojidar Michaylov Stankov

  DOI：10.1021/jm9810093

  日期：1998.9.1

  The CoMFA methodology was applied to melatonin receptor ligands in order to establish quantitative structure-affinity relationships. One hundred thirty-three compounds were considered: they were either collected from literature or newly synthesized in order to gain information about the less explored positions. To this end, various melatonin derivatives were prepared and their affinity for quail optic tecta melatonin receptor was tested. Compounds were aligned on the putative active conformation of melatonin proposed by our previously reported pharmacophore search, and their relative affinities were calculated from the displacement of 2-[I-125]-iodomelatonin on different tissues expressing aMT receptors. Compounds were grouped into three sets according to their topology. Subset A: melatonin-like compounds; subset B: N-acyl-2-amino-8-methoxytetralins and related compounds; subset C: N-acyl-phenylalkylamines and related compounds. CoMFA models were derived for each set, using the steric, electrostatic, and lipophilic fields as structural descriptors; the PLS analyses were characterized by good statistical parameters, taking into account the heterogeneity of the binding data, obtained with different experimental protocols. From the CoMFA model for the melatonin-like compounds, besides the well-known positive effect of 2-substitution, a low steric tolerance for substituents in 1, 6, and 7, and a negative effect of electron-rich 4-substituents were observed; the information provided by the newly synthesized compounds was essential for these results. Moreover, a comprehensive model for the 133 compounds, accounting for a common alignment and a common mode of interaction at the melatonin receptor, was derived (Q(2) = 0.769, R-2 = 0.905). This model validates our previously reported pharmacophore search and offers a clear depiction of the structure-affinity relationships for the melatonin receptor ligands.
• Complementary Site‐Selective Halogenation of Nitrogen‐Containing (Hetero)Aromatics with Superacids
  作者：Alexander Mamontov、Agnès Martin‐Mingot、Benoit Métayer、Omar Karam、Fabien Zunino、Fodil Bouazza、Sébastien Thibaudeau

  DOI：10.1002/chem.202000902

  日期：2020.8.17

  functionalization of arenes that is complementary to classical aromatic substitution reactions remains a long‐standing quest in organic synthesis. Exploiting the generation of halenium ion through oxidative process and the protonation of the nitrogen containing function in HF/SbF5, the chlorination and iodination of classically inert Csp2−H bonds of aromatic amines occurs. Furthermore, the superacid‐promoted (poly)protonation

  与经典的芳香族取代反应互补的芳烃的位点选择性官能化仍然是有机合成中的长期追求。通过利用氧化过程中的ion离子的产生和HF / SbF 5中含氮功能的质子化，芳香胺的经典惰性Csp 2 -H键发生氯化和碘化。此外，分子的超强酸促进（聚）质子化作用起到保护作用，有利于天然生物碱和活性药物成分的后期选择性卤化