methyl (1R,2R,3S,5S)-(-)-1-pentyl-3-(benzoyloxy)-8-methyl-8-azabicyclo[3.2.1]octane-2-carboxylate | 1355075-40-9

• 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: methyl (1R,2R,3S,5S)-(-)-1-pentyl-3-(benzoyloxy)-8-methyl-8-azabicyclo[3.2.1]octane-2-carboxylate
• 英文别名: methyI (1R,2R,3S,5S)-(-)-1-pentyl-3-(benzoyloxy)-8-methyl-8-azabicyclo[3.2.1]octane-2-carboxylate；methyl (1R,2R,3S,5S)-3-benzoyloxy-8-methyl-1-pentyl-8-azabicyclo[3.2.1]octane-2-carboxylate
• CAS: 1355075-40-9
• 化学式: C₂₂H₃₁NO₄
• 分子量: 373.492
• InChiKey: JHQAFXQYAPQEMA-PSHVLCQKSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.6
• 重原子数：
  27
• 可旋转键数：
  9
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.64
• 拓扑面积：
  55.8
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  γ-壬内酯 在 吡啶 、 盐酸 、 titanium(IV) tetraethanolate 、 lithium aluminium tetrahydride 、 5%-palladium/activated carbon 、 氢气 、 异丙基氯化镁 、 sodium hexamethyldisilazane 、 过氧化脲素 、 甲基三氧化铼(VII) 、 二异丁基氢化铝 、 aluminum tri-tert-butoxide 、 对甲苯磺酸 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 、 2-碘酰基苯甲酸 作用下， 以 四氢呋喃 、 甲醇 、 乙醚 、 水 、 乙酸乙酯 、 甲苯 、 乙腈 、 苯 为溶剂， -78.0~110.0 ℃ 、405.33 kPa 条件下， 反应 244.5h， 生成 methyl (1R,2R,3S,5S)-(-)-1-pentyl-3-(benzoyloxy)-8-methyl-8-azabicyclo[3.2.1]octane-2-carboxylate
  参考文献：
  名称：

  Enantioselective Synthesis of Cocaine C-1 Analogues using Sulfinimines (N-Sulfinyl Imines)

  摘要：

  The first examples of cocaine analogues having substituents (methyl, ethyl, n-propyl, n-pentyl, and phenyl) at the C-1 position of the cocaine tropane skeleton were prepared by heating sulfinimine-derived alpha,beta-unsaturated pyrrolidine nitrones. In the presence of the Lewis acid Al((OBu)-Bu-t)(3) the nitrones undergo an intramolecular [3 + 2] cycloaddition to give tricyclic isoxazolidines that were transformed in three steps to the cocaine analogues. In the absence of the Lewis acid, lactams were formed resulting from rearrangement of the nitrone to an oxaziridine. A novel Pd-and base-promoted rearrangement of methanesulfonate salts of isoxazolidine to bridge bicyclic[4.2.1]isoxazolidines was discovered.

  DOI：

  10.1021/jo202652f

文献信息

• Enantioselective Synthesis of Cocaine C-1 Analogues using Sulfinimines (<i>N</i>-Sulfinyl Imines)
  作者：Franklin A. Davis、Narendra V. Gaddiraju、Naresh Theddu、Joshua R. Hummel、Sandeep K. Kondaveeti、Michael J. Zdilla

  DOI：10.1021/jo202652f

  日期：2012.3.2

  The first examples of cocaine analogues having substituents (methyl, ethyl, n-propyl, n-pentyl, and phenyl) at the C-1 position of the cocaine tropane skeleton were prepared by heating sulfinimine-derived alpha,beta-unsaturated pyrrolidine nitrones. In the presence of the Lewis acid Al((OBu)-Bu-t)(3) the nitrones undergo an intramolecular [3 + 2] cycloaddition to give tricyclic isoxazolidines that were transformed in three steps to the cocaine analogues. In the absence of the Lewis acid, lactams were formed resulting from rearrangement of the nitrone to an oxaziridine. A novel Pd-and base-promoted rearrangement of methanesulfonate salts of isoxazolidine to bridge bicyclic[4.2.1]isoxazolidines was discovered.