(3S,6R,7aR)-6-[2-(2-bromo-5-methoxyphenyl)ethyl]-6,7a-dimethyl-3-propan-2-yl-3,7-dihydro-2H-pyrrolo[2,1-b][1,3]oxazol-5-one | 153683-09-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: (3S,6R,7aR)-6-[2-(2-bromo-5-methoxyphenyl)ethyl]-6,7a-dimethyl-3-propan-2-yl-3,7-dihydro-2H-pyrrolo[2,1-b][1,3]oxazol-5-one
• CAS: 153683-09-1
• 化学式: C₂₀H₂₈BrNO₃
• 分子量: 410.351
• InChiKey: QSIUMYMDYBVHCD-MISYRCLQSA-N

物化性质

• 沸点：
  494.3±35.0 °C(predicted)
• 密度：
  1.31±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.5
• 重原子数：
  25
• 可旋转键数：
  5
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.65
• 拓扑面积：
  38.8
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (3S,6R,7aR)-6-[2-(2-bromo-5-methoxyphenyl)ethyl]-6,7a-dimethyl-3-propan-2-yl-3,7-dihydro-2H-pyrrolo[2,1-b][1,3]oxazol-5-one 在 叔丁基锂 、 sodium ethanolate 、 四丁基磷酸氢铵 作用下， 以 乙醇 为溶剂， 反应 37.0h， 生成 3,3a,4,5-Tetrahydro-7-methoxy-3a-methyl-2H-benz-inden-2-one
  参考文献：
  名称：

  Synthesis of enantiomerically pure hydrinden-2-ones and benz[e]inden-2-ones via asymmetric alkylations of chiral bicyclic lactams

  摘要：

  A route to the titled compounds in >99 % ee was achieved from sequential diastereoselective alkylations of chiral, nonracemic bicyclic lactams 6 and 15. An intramolecular addition of the organolithium species derived from 17a-c and 28a-d gave, after hydrolysis, diketones 25a-c and 30a-d, which were cyclized to the titled compounds 4a-c and 31a-d. As an example of the versatility of this method, the ABC ring system of the triterpene stelliferin A, isolated from marine organisms, was prepared in high enantiomeric excess.

  DOI：

  10.1021/jo00078a032
• 作为产物：
  描述：

  3-甲氧基苯乙酸 在 咪唑 、 sodium tetrahydroborate 、 溴 、 碘 、 三苯基膦 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 二氯甲烷 、 氯仿 为溶剂， 反应 25.0h， 生成 (3S,6R,7aR)-6-[2-(2-bromo-5-methoxyphenyl)ethyl]-6,7a-dimethyl-3-propan-2-yl-3,7-dihydro-2H-pyrrolo[2,1-b][1,3]oxazol-5-one
  参考文献：
  名称：

  Synthesis of enantiomerically pure hydrinden-2-ones and benz[e]inden-2-ones via asymmetric alkylations of chiral bicyclic lactams

  摘要：

  A route to the titled compounds in >99 % ee was achieved from sequential diastereoselective alkylations of chiral, nonracemic bicyclic lactams 6 and 15. An intramolecular addition of the organolithium species derived from 17a-c and 28a-d gave, after hydrolysis, diketones 25a-c and 30a-d, which were cyclized to the titled compounds 4a-c and 31a-d. As an example of the versatility of this method, the ABC ring system of the triterpene stelliferin A, isolated from marine organisms, was prepared in high enantiomeric excess.

  DOI：

  10.1021/jo00078a032

文献信息

• Synthesis of enantiomerically pure hydrinden-2-ones and benz[e]inden-2-ones via asymmetric alkylations of chiral bicyclic lactams
  作者：Lawrence Snyder、A. I. Meyers

  DOI：10.1021/jo00078a032

  日期：1993.12

  A route to the titled compounds in >99 % ee was achieved from sequential diastereoselective alkylations of chiral, nonracemic bicyclic lactams 6 and 15. An intramolecular addition of the organolithium species derived from 17a-c and 28a-d gave, after hydrolysis, diketones 25a-c and 30a-d, which were cyclized to the titled compounds 4a-c and 31a-d. As an example of the versatility of this method, the ABC ring system of the triterpene stelliferin A, isolated from marine organisms, was prepared in high enantiomeric excess.