(+)-(5R)-3-((Ethoxycarbonyl)methyl)-5-ethyl-N-(2-(3-indolyl)ethyl)piperidin-2-one

• 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: (+)-(5R)-3-((Ethoxycarbonyl)methyl)-5-ethyl-N-(2-(3-indolyl)ethyl)piperidin-2-one
• 英文别名: ethyl 2-[(5R)-5-ethyl-1-[2-(1H-indol-3-yl)ethyl]-2-oxopiperidin-3-yl]acetate
• 化学式: C₂₁H₂₈N₂O₃
• 分子量: 356.465
• InChiKey: AQVAZCRIWGAOOK-LDCVWXEPSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  26
• 可旋转键数：
  8
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.52
• 拓扑面积：
  62.4
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (+)-(5R)-3-((Ethoxycarbonyl)methyl)-5-ethyl-N-(2-(3-indolyl)ethyl)piperidin-2-one 生成 (+)-tacamonine
  参考文献：
  名称：

  Asymmetric Total Synthesis of Tacamonine (Pseudovincamone I) via Radical Cyclization

  摘要：

  The radical cyclizations of (+/-)-(E)-3-((2-(bromomethyl)butoxy)carbonyl)prop-2-enoates 11 and 12 and (+/-)-ethyl (E)-3-{N-[2-(bromomethyl)butyl]-N-[2-(3-indolyl)ethyl]carbamoyl} prop-2-enoate (25) were carried out with (TMS)(3)SiH or Bu(3)SnH in the presence of AIBN. (-)-(2S)-2-((tert-Butyldimethylsilyloxy)methyl)butan-1-ol (6), which was prepared by two different methods, was converted into (+)-25. The radical cyclization of(+)-25 produced piperidinone 18 as a diastereomeric mixture, which was transformed into tacamonine (1).

  DOI：

  10.1021/jo00097a037
• 作为产物：
  描述：

  (-)-(2S)-2-((tert-Butyldimethylsiloxy)methyl)butan-1-ol 在 4-二甲氨基吡啶 、 偶氮二异丁腈 、 三(三甲基硅基)硅烷 、 溶剂黄146 、 三乙胺 、 N,N'-二环己基碳二亚胺 、 lithium bromide 作用下， 以 四氢呋喃 、 二氯甲烷 、 N,N-二甲基甲酰胺 、 苯 为溶剂， 反应 41.0h， 生成 (+)-(5R)-3-((Ethoxycarbonyl)methyl)-5-ethyl-N-(2-(3-indolyl)ethyl)piperidin-2-one
  参考文献：
  名称：

  Asymmetric Total Synthesis of Tacamonine (Pseudovincamone I) via Radical Cyclization

  摘要：

  The radical cyclizations of (+/-)-(E)-3-((2-(bromomethyl)butoxy)carbonyl)prop-2-enoates 11 and 12 and (+/-)-ethyl (E)-3-{N-[2-(bromomethyl)butyl]-N-[2-(3-indolyl)ethyl]carbamoyl} prop-2-enoate (25) were carried out with (TMS)(3)SiH or Bu(3)SnH in the presence of AIBN. (-)-(2S)-2-((tert-Butyldimethylsilyloxy)methyl)butan-1-ol (6), which was prepared by two different methods, was converted into (+)-25. The radical cyclization of(+)-25 produced piperidinone 18 as a diastereomeric mixture, which was transformed into tacamonine (1).

  DOI：

  10.1021/jo00097a037

文献信息

• Indirect Electroreductive Cyclization for Syntheses of Key Intermediates of Several Indole and Ipecac Alkaloids.
  作者：Masataka IHARA、Fumihito SETSU、Yuji TOKUNAGA、Keiichiro FUKUMOTO、Yoshitomo KASHIWAGI、Tetsuo OSA

  DOI：10.1248/cpb.43.362

  日期：——

  Indirect electroreductive cyclization of η-bromo-α, β-unsaturated esters 1-6 using Co(III) or Ni(II)complex as an electron-transfer catalyst provided the six membered compounds 7-12, which are useful synthetic intermediates of several indole and ipecac alkaloids.

  使用 Co（III）或 Ni（II）络合物作为电子转移催化剂，对 η-溴-α，β-不饱和酯 1-6 进行间接电还原环化，得到了六位化合物 7-12，它们是几种吲哚和开环十四烷生物碱的有用合成中间体。
• Synthesis of Six-Membered Compounds by Environmentally Friendly Cyclization Using Indirect Electrolysis
  作者：Masataka Ihara、Akira Katsumata、Fumihito Setsu、Yuji Tokunaga、Keiichiro Fukumoto

  DOI：10.1021/jo951653e

  日期：1996.1.1

  [Ni(cyclam)](ClO4)(2)-catalyzed indirect electroreduction of olefinic bromides produced six-membered compounds in low to high yields. The synthetic intermediate 49 of Ipecac and Corynanthe alkaloids was obtained in 88% yield in a highly stereoselective manner. Lactam 66, the synthetic precursor of tacamonine, was prepared in 49% yield as a mixture of two diastereoisomers. The electrolysis of the bromoacetates gave the debrominated compounds in good yields.