tert-butyl 8-azabicyclo[3.2.1]oct-2-ene-8-carboxylate

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡咯烷类
• 英文名称: tert-butyl 8-azabicyclo[3.2.1]oct-2-ene-8-carboxylate
• 英文别名: tert-butyl (1R,5S)-8-azabicyclo[3.2.1]oct-2-ene-8-carboxylate
• 化学式: C₁₂H₁₉NO₂
• 分子量: 209.288
• InChiKey: ZJQQGLKPJWUKNL-VHSXEESVSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  29.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  tert-butyl 8-azabicyclo[3.2.1]oct-2-ene-8-carboxylate 在 4-二甲氨基吡啶 、 氢气 、 硼酸 、 碳酸氢钠 、 三乙胺 、 三氟乙酸 作用下， 以 甲醇 、 二氯甲烷 、 水 、 乙酸乙酯 为溶剂， 10.0~20.0 ℃ 、101.33 kPa 条件下， 反应 65.0h， 生成 古卡因
  参考文献：
  名称：

  （-）-可卡因和（-）-铁精氨酸的全合成

  摘要：

  从已知的Betti基础衍生物（+）-（7a R，10 R，12 S）-10-（1 H-苯并三唑-1-基）-7a，8,9,10-四氢-12-苯基-12 H-萘[1,2- e ]吡咯并[2,1- b ] [1,3]恶嗪。在该新颖途径中，RCM反应和1，3-偶极环加成被用作对映烷骨架的对映选择性构建和3-溴-2-异恶唑啉环的区域选择性引入作为掩蔽的顺式-2，3-二取代基的关键步骤。获得所需的前体（2 S，5R）-2-烯丙基-5-乙烯基吡咯烷用于RCM反应，我们开发了一种通用且实用的方法，用于制备带有烯键和/或炔烃取代基的对映体纯的顺式-2,5-二取代的吡咯烷。我们还提供了两种高效的途径，可将3-溴-2-异恶唑啉环转化为（-）-可卡因和（-）-铁精氨酸中所需的顺式-2,3-二取代基。

  DOI：

  10.1021/jo200069m
• 作为产物：
  描述：

  盐酸古柯碱 在 palladium on activated charcoal 盐酸 、 1-氧化-2-巯基吡啶 、 sodium periodate 、 草酰氯 、 1-氯乙基氯甲酸酯 、 氢气 、 三乙胺 、 N,N-二甲基甲酰胺 作用下， 以 甲醇 、 水 为溶剂， 75.0 ℃ 、413.69 kPa 条件下， 反应 94.0h， 生成 tert-butyl 8-azabicyclo[3.2.1]oct-2-ene-8-carboxylate
  参考文献：
  名称：

  Enantiospecific Synthesis of Natural (−)-Cocaine and Unnatural (+)-Cocaine from d- and l-Glutamic Acid

  摘要：

  Natural (-)-cocaine and unnatural (+)-cocaine have been synthesized enantiospecifically from D- and L-glutamic acid, respectively. The axial-equatorial substitutents were introduced by a stereo- and regiospecific dipolar cycloaddition to the corresponding (LR,5S)- and (1S,5R)-N-BOC-nortropenes with (ethoxycarbonyl)formonitrile N-oxide. A sequence of subsequent stereochemically controlled transformations converted the fused isoxazoline to the requisite P-hydroxy ester. Synthesis of the key intermediate N-BOC-nortropenes involved construction of the 8-azabicyclo[3.2.1]octane framework by Dieckmann condensation of cis-5-substituted D-and L-proline esters. For comparison, (1R,SS)-N-BOC-nortropene also was derived by degradation from natural cocaine. The cis-5-substituted D-and L-proline esters were obtained by sulfide contraction and subsequent catalytic hydrogenation to induce stereospecifically the C-5 stereochemistry from D-and L-thiopyroglutamate, which in turn were prepared from D-and L-glutamic acids, respectively.

  DOI：

  10.1021/jo980153t

文献信息

• Novel tricyclic Δ2-isoxazoline and 3-oxo-2-methyl-isoxazolidine derivatives: Synthesis and binding affinity at neuronal nicotinic acetylcholine receptor subtypes
  作者：Clelia Dallanoce、Fabio Frigerio、Giuliana Martelli、Giovanni Grazioso、Carlo Matera、Diego Yuri Pomè、Luca Pucci、Francesco Clementi、Cecilia Gotti、Marco De Amici

  DOI：10.1016/j.bmc.2010.04.065

  日期：2010.6.15

  assayed at α4β2 and α7 neuronal acetylcholine receptors (nAChRs). The results of competition binding experiments indicated for the new derivatives a reduction of the affinity at the α4β2 subtype in comparison with the reference molecules, coupled with an overall negligible affinity at the α7 subtype. The binding mode of the bromo-Δ2-isoxazolines 4b and 7b, which were the highest affinity ligands in the series

  A组新的三环Δ的2个-isoxazolines（图4b，图5b，图7a - b，和图8a - b）和3-氧代-异恶唑烷（6A - b和图9a - b通过与1,3,3-偶极环加成反应制备涉及结构上的胱氨酸或去铁血红素的α-己内酯和氧化溴腈。在α4β2和α7神经元乙酰胆碱受体（nAChRs）处测定了目标化合物。竞争结合实验的结果表明，与参考分子相比，新衍生物对α4β2亚型的亲和力降低，并且对α7亚型的总体亲和力可忽略不计。溴- Δ的结合模式2 -isoxazolines 4B和图7b，这是在该系列中的最高亲和配体（ķ我 = 0.92和0.75μM，分别地），通过应用α4β2nAChRs的的最近开发的模型进行分析。
• Enantiospecific Synthesis of Natural (−)-Cocaine and Unnatural (+)-Cocaine from <scp>d</scp>- and <scp>l</scp>-Glutamic Acid
  作者：Ronghui Lin、Josep Castells、Henry Rapoport

  DOI：10.1021/jo980153t

  日期：1998.6.1

  Natural (-)-cocaine and unnatural (+)-cocaine have been synthesized enantiospecifically from D- and L-glutamic acid, respectively. The axial-equatorial substitutents were introduced by a stereo- and regiospecific dipolar cycloaddition to the corresponding (LR,5S)- and (1S,5R)-N-BOC-nortropenes with (ethoxycarbonyl)formonitrile N-oxide. A sequence of subsequent stereochemically controlled transformations converted the fused isoxazoline to the requisite P-hydroxy ester. Synthesis of the key intermediate N-BOC-nortropenes involved construction of the 8-azabicyclo[3.2.1]octane framework by Dieckmann condensation of cis-5-substituted D-and L-proline esters. For comparison, (1R,SS)-N-BOC-nortropene also was derived by degradation from natural cocaine. The cis-5-substituted D-and L-proline esters were obtained by sulfide contraction and subsequent catalytic hydrogenation to induce stereospecifically the C-5 stereochemistry from D-and L-thiopyroglutamate, which in turn were prepared from D-and L-glutamic acids, respectively.
• Total Synthesis of (−)-Cocaine and (−)-Ferruginine
  作者：Guolin Cheng、Xinyan Wang、Rui Zhu、Changwei Shao、Jimin Xu、Yuefei Hu

  DOI：10.1021/jo200069m

  日期：2011.4.15

  synthesis of tropane alkaloids (−)-cocaine and (−)-ferruginine were accomplished in nine steps each and in 55% and 46% overall yields, respectively, starting from the known Betti base derivative (+)-(7aR,10R,12S)-10-(1H-benzotriazol-1-yl)-7a,8,9,10-tetrahydro-12-phenyl-12H-naphtho[1,2-e]pyrrolo[2,1-b][1,3]oxazine. In this novel route, RCM reaction and 1,3-dipolar cycloaddition were employed as key steps

  从已知的Betti基础衍生物（+）-（7a R，10 R，12 S）-10-（1 H-苯并三唑-1-基）-7a，8,9,10-四氢-12-苯基-12 H-萘[1,2- e ]吡咯并[2,1- b ] [1,3]恶嗪。在该新颖途径中，RCM反应和1，3-偶极环加成被用作对映烷骨架的对映选择性构建和3-溴-2-异恶唑啉环的区域选择性引入作为掩蔽的顺式-2，3-二取代基的关键步骤。获得所需的前体（2 S，5R）-2-烯丙基-5-乙烯基吡咯烷用于RCM反应，我们开发了一种通用且实用的方法，用于制备带有烯键和/或炔烃取代基的对映体纯的顺式-2,5-二取代的吡咯烷。我们还提供了两种高效的途径，可将3-溴-2-异恶唑啉环转化为（-）-可卡因和（-）-铁精氨酸中所需的顺式-2,3-二取代基。