2-(2,4,6-tribromo-3-methoxyphenyl)acetaldehyde | 1359715-08-4

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 2-(2,4,6-tribromo-3-methoxyphenyl)acetaldehyde
• 英文别名: 2-(2,4,6-Tribromo-3-methoxyphenyl)acetaldehyde
• CAS: 1359715-08-4
• 化学式: C₉H₇Br₃O₂
• 分子量: 386.865
• InChiKey: JHXXIVBIWXABFW-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  14
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.22
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2-(2,4,6-tribromo-3-methoxyphenyl)acetaldehyde 在 sodium tetrahydroborate 作用下， 以 甲醇 、 水 为溶剂， 反应 34.5h， 生成 lutamide C
  参考文献：
  名称：

  Synthesis of Reported and Revised Structures of Amathamide D and Synthesis of Convolutamine F, H and Lutamide A, C

  摘要：

  Total synthesis of the published structure of amathamide D is described. Methyl 2,3,4-tribromo-5-hydroxybenzoate was selected as starting compound because it is readily accessible via acid-mediated Grob fragmentation- aromatization reaction of 1,4,5,6-tetrabromo-7,7-dimethoxybicyclo[2.2.1]hept-5-en-2-one. The aforementioned ester was transformed into the reported structure of amathamide D through methylation of a hydroxyl group and conversion of the ester moiety to a beta-aminoethyl side chain. The NMR data of the synthetic compound did not conform to the reported natural product structure possessing contiguously positioned beta-aminoethyl side chain, a set of three adjacent bromines, and a methyl ether linkage on the phenyl ring. This prompted us to redefine the natural product structure by synthesizing a product whose spectral data exactly matched with the reported data of amathamide D. The convolutamine H, with completely substituted phenyl ring adorned with an extra methyl ether functional group, has also been synthesized by application of Grob fragmentation-aromatization strategy to 3-(benzyloxy)-1,4,5,6-tetrabromo-7,7-dimethoxybicyclo[2.2.1]hept-5-en-2-one. This approach furnished directly methyl 2,3,4-tribromo-5,6-dimethoxybenzoate, which was converted straightforwardly into convolutamine H. Further, synthesis of convolutamine F and lutamide A and C is also described.

  DOI：

  10.1021/jo3000173
• 作为产物：
  描述：

  2,4,6-tribromo-3-methoxybenzaldehyde 在 甲烷磺酸 、 potassium tert-butylate 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 4.83h， 生成 2-(2,4,6-tribromo-3-methoxyphenyl)acetaldehyde
  参考文献：
  名称：

  Synthesis of Reported and Revised Structures of Amathamide D and Synthesis of Convolutamine F, H and Lutamide A, C

  摘要：

  Total synthesis of the published structure of amathamide D is described. Methyl 2,3,4-tribromo-5-hydroxybenzoate was selected as starting compound because it is readily accessible via acid-mediated Grob fragmentation- aromatization reaction of 1,4,5,6-tetrabromo-7,7-dimethoxybicyclo[2.2.1]hept-5-en-2-one. The aforementioned ester was transformed into the reported structure of amathamide D through methylation of a hydroxyl group and conversion of the ester moiety to a beta-aminoethyl side chain. The NMR data of the synthetic compound did not conform to the reported natural product structure possessing contiguously positioned beta-aminoethyl side chain, a set of three adjacent bromines, and a methyl ether linkage on the phenyl ring. This prompted us to redefine the natural product structure by synthesizing a product whose spectral data exactly matched with the reported data of amathamide D. The convolutamine H, with completely substituted phenyl ring adorned with an extra methyl ether functional group, has also been synthesized by application of Grob fragmentation-aromatization strategy to 3-(benzyloxy)-1,4,5,6-tetrabromo-7,7-dimethoxybicyclo[2.2.1]hept-5-en-2-one. This approach furnished directly methyl 2,3,4-tribromo-5,6-dimethoxybenzoate, which was converted straightforwardly into convolutamine H. Further, synthesis of convolutamine F and lutamide A and C is also described.

  DOI：

  10.1021/jo3000173

文献信息

• Synthesis of wilsoniamines A and B
  作者：Faiz Ahmed Khan、Saeed Ahmad

  DOI：10.1016/j.tetlet.2013.03.122

  日期：2013.6

  A two-step synthesis of marine origin brominated alkaloids wilsoniamines A (1) and B (2), isolated from Australian bryozoan Amathia wilsoni Kirkpatrick, possessing a novel hexahydro-1H-pyrrolo[1,2-c]imidazol-1-one ring system is described. The core hexahydro-1H-pyrrolo[1,2-c]imidazol-1-one ring systems is constructed through a condensation reaction between (2,4,6-tribromo-3-methoxyphenyl)acetaldehyde

  两步法合成海洋起源的溴化生物碱wilsoniamines A（1）和B（2），其分离自澳大利亚苔藓虫Amathia wilsoni Kirkpatrick，具有新颖的hexahydro-1 H -pyrrolo [1,2- c ]咪唑-1-酮描述了铃声系统。通过（2,4,6-三溴-3-甲氧基苯基）乙醛与（S）-N的缩合反应构建六氢-1 H-吡咯并[1,2 - c ]咪唑-1-环核心体系-甲基吡咯烷-2-羧酰胺为关键步骤。通过在动力学或热力学条件下进行关键缩合反应来控制两种差向异构天然产物中取代的苄基侧链的取向。
• N1,N1-Dimethyl-N3-(3-(trifluoromethyl)phenethyl)propane-1,3-diamine, a new lead for the treatment of human African trypanosomiasis
  作者：Ngoc B. Pham、Sophie Deydier、Mehdi Labaied、Séverine Monnerat、Kenneth Stuart、Ronald J. Quinn

  DOI：10.1016/j.ejmech.2013.12.050

  日期：2014.3

  The natural product, convolutamine I (1), has anti-trypanosomal activity however it has a high molecular weight of 473 due to a presence of 3 bromine atoms. The synthesis of the natural product convolutamine I (1) together with its analogues are presented. A SAR study against Trypanosoma brucei brucei led to compounds with improved physico-chemical properties: lower molecular weight and lower log P while maintaining potency (with a slight 2-fold improvement). (C) 2014 The Authors. Published by Elsevier Masson SAS. All rights
• Synthesis of marine brominated alkaloid amathamide F: a palladium-catalyzed enamide synthesis
  作者：Saeed Ahmad、Sumit Choudhury、Faiz Ahmed Khan

  DOI：10.1016/j.tet.2015.04.091

  日期：2015.6

  Synthesis of brominated marine natural product amathamide F is described. Various strategies to construct the enamide functionality required for its synthesis have been explored. Finally, we succeeded in constructing the enamide moiety under a palladium-catalyzed condition. Facile transformation of 2,3,4-tribromo-5-methoxybenzaldehyde to the reported structure of amathamide F involved initial onecarbon-elongation of the aldehyde group followed by its conversion to corresponding enol acetate derivative prior to crucial Pd(II)-catalyzed cross-coupling with (S)-1-methylpyrrolidine-2-carboxamide. However, due to nonconformity of its NMR spectral data to that of the reported natural isolate, we have confirmed its actual structure through a synthesis. (C) 2015 Elsevier Ltd. All rights reserved.