(2S,5R)-1-(tert-butyloxycarbonyl)-2-(2-β-methoxycarbonylmethyl)-5-(3-pyridinyl)pyrrolidine | 229958-71-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 英文名称: (2S,5R)-1-(tert-butyloxycarbonyl)-2-(2-β-methoxycarbonylmethyl)-5-(3-pyridinyl)pyrrolidine
• 英文别名: tert-butyl (2S,5R)-2-(3-methoxy-3-oxopropyl)-5-pyridin-3-ylpyrrolidine-1-carboxylate
• CAS: 229958-71-8
• 化学式: C₁₈H₂₆N₂O₄
• 分子量: 334.415
• InChiKey: HJKLVLGNMNEOEU-LSDHHAIUSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  24
• 可旋转键数：
  7
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.61
• 拓扑面积：
  68.7
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  (2S,5R)-1-(tert-butyloxycarbonyl)-2-(2-β-methoxycarbonylmethyl)-5-(3-pyridinyl)pyrrolidine 在 N-甲基咪唑 、 盐酸 、 sodium tetrahydroborate 、 正丁基锂 、 三氟甲烷磺酸甲酯 、 calcium chloride 、 lithium bromide 作用下， 以 四氢呋喃 、 乙醇 、 正己烷 、 乙酸乙酯 、 丙酮 为溶剂， 反应 2.0h， 生成 1-(3-pyridinyl)-8-azabicyclo<3.2.1>octane
  参考文献：
  名称：

  Conformationally Constrained Nicotines. 1-Pyridinyl-7-azabicyclo[2.2.1]heptane and 1-Pyridinyl-8-azabicyclo[3.2.1]octane Analogues

  摘要：

  Conformationally constrained bicycle analogues of natural (-)-nicotine and unnatural (+)-nicotine have been synthesized from D- and L-glutamic acid, respectively. Regioselective addition of 3-lithiopyridine to the gamma-carbonyl of a protected glutamate was followed by intramolecular imine formation and stereospecific catalytic hydrogenation of the resultant pyrroline to give cis-5-pyridinylproline. A sequence of transformations to convert the ester to bromide was followed by the key intramolecular anionic cyclization at the benzylic position to form the 1-pyridinyl-7-azabicyclo[2.2.1]heptane analogue. Alternatively, homologation of the ester of cis-5-pyridinylproline and conversion to bromide allowed cyclization to the 1-pyridinyl-7-azabicyclo[3.2.1]octane analogues.

  DOI：

  10.1021/jo990130u
• 作为产物：
  描述：

  3-碘吡啶 在 palladium on activated charcoal 盐酸 、 sodium tetrahydroborate 、 草酰氯 、 氢气 、 sodium hydride 、 二甲基亚砜 、 三乙胺 、 calcium chloride 作用下， 以 四氢呋喃 、 甲醇 、 乙醇 、 二氯甲烷 为溶剂， -78.0~25.0 ℃ 、101.33 kPa 条件下， 反应 10.5h， 生成 (2S,5R)-1-(tert-butyloxycarbonyl)-2-(2-β-methoxycarbonylmethyl)-5-(3-pyridinyl)pyrrolidine
  参考文献：
  名称：

  Conformationally Constrained Nicotines. 1-Pyridinyl-7-azabicyclo[2.2.1]heptane and 1-Pyridinyl-8-azabicyclo[3.2.1]octane Analogues

  摘要：

  Conformationally constrained bicycle analogues of natural (-)-nicotine and unnatural (+)-nicotine have been synthesized from D- and L-glutamic acid, respectively. Regioselective addition of 3-lithiopyridine to the gamma-carbonyl of a protected glutamate was followed by intramolecular imine formation and stereospecific catalytic hydrogenation of the resultant pyrroline to give cis-5-pyridinylproline. A sequence of transformations to convert the ester to bromide was followed by the key intramolecular anionic cyclization at the benzylic position to form the 1-pyridinyl-7-azabicyclo[2.2.1]heptane analogue. Alternatively, homologation of the ester of cis-5-pyridinylproline and conversion to bromide allowed cyclization to the 1-pyridinyl-7-azabicyclo[3.2.1]octane analogues.

  DOI：

  10.1021/jo990130u

文献信息

• Conformationally Constrained Nicotines. 1-Pyridinyl-7-azabicyclo[2.2.1]heptane and 1-Pyridinyl-8-azabicyclo[3.2.1]octane Analogues
  作者：Ying-zi Xu、Jaesung Choi、M. Isabel Calaza、Sean Turner、Henry Rapoport

  DOI：10.1021/jo990130u

  日期：1999.5.1

  Conformationally constrained bicycle analogues of natural (-)-nicotine and unnatural (+)-nicotine have been synthesized from D- and L-glutamic acid, respectively. Regioselective addition of 3-lithiopyridine to the gamma-carbonyl of a protected glutamate was followed by intramolecular imine formation and stereospecific catalytic hydrogenation of the resultant pyrroline to give cis-5-pyridinylproline. A sequence of transformations to convert the ester to bromide was followed by the key intramolecular anionic cyclization at the benzylic position to form the 1-pyridinyl-7-azabicyclo[2.2.1]heptane analogue. Alternatively, homologation of the ester of cis-5-pyridinylproline and conversion to bromide allowed cyclization to the 1-pyridinyl-7-azabicyclo[3.2.1]octane analogues.