ethyl 1,2-bis(3,4-dimethoxyphenyl)-8,9-dimethoxy-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxylate | 919082-30-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡咯
• 英文名称: ethyl 1,2-bis(3,4-dimethoxyphenyl)-8,9-dimethoxy-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxylate
• 英文别名: ethyl 1,2-bis(3,4-dimethoxyphenyl)-8,9-dimethoxy-5,6-dihydropyrrolo[2,1-a]isoquinoline-2-carboxylate
• CAS: 919082-30-7
• 化学式: C₃₃H₃₅NO₈
• 分子量: 573.643
• InChiKey: RBWUJHFZNDVOKA-UHFFFAOYSA-N

物化性质

• 沸点：
  703.5±60.0 °C(Predicted)
• 密度：
  1.22±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.9
• 重原子数：
  42
• 可旋转键数：
  11
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  86.6
• 氢给体数：
  0
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  ethyl 1,2-bis(3,4-dimethoxyphenyl)-8,9-dimethoxy-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxylate 在 氢氧化钾 作用下， 以 乙醇 、 水 为溶剂， 生成 1,2-Bis-(3,4-dimethoxy-phenyl)-8,9-dimethoxy-5,6-dihydro-pyrrolo[2,1-a]isoquinoline
  参考文献：
  名称：

  Total Synthesis of Natural and Unnatural Lamellarins with Saturated and Unsaturated D-Rings

  摘要：

  Twenty-eight natural and unnatural lamellarins with either a saturated or an unsaturated D-ring were synthesized according to our developed synthetic route. The key step involved the Michael addition/ring closure (Mi-RC) of the benzyldihydroisoquinoline and alpha-nitrocinnamate derivatives, which provided the 2-carboethoxypyrrole intermediates in moderate to good yields (up to 78% yield). Subsequent hydrogenolysis/lactonization furnished lamellarins with a saturated D-ring in excellent yields (up to 93% yield). DDQ oxidation of the saturated lamellarin acetates led directly to the corresponding unsaturated analogues in 54-95% yield. In addition, only two steps in our developed strategy require column chromatography.

  DOI：

  10.1021/jo061810h
• 作为产物：
  描述：

  (3,4-二甲氧基苯基)乙酰氯 在 碳酸氢钠 、 sodium carbonate 、 三氯氧磷 作用下， 以 乙醇 、 二氯甲烷 、 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 23.0h， 生成 ethyl 1,2-bis(3,4-dimethoxyphenyl)-8,9-dimethoxy-5,6-dihydropyrrolo[2,1-a]isoquinoline-3-carboxylate
  参考文献：
  名称：

  Total Synthesis of Natural and Unnatural Lamellarins with Saturated and Unsaturated D-Rings

  摘要：

  Twenty-eight natural and unnatural lamellarins with either a saturated or an unsaturated D-ring were synthesized according to our developed synthetic route. The key step involved the Michael addition/ring closure (Mi-RC) of the benzyldihydroisoquinoline and alpha-nitrocinnamate derivatives, which provided the 2-carboethoxypyrrole intermediates in moderate to good yields (up to 78% yield). Subsequent hydrogenolysis/lactonization furnished lamellarins with a saturated D-ring in excellent yields (up to 93% yield). DDQ oxidation of the saturated lamellarin acetates led directly to the corresponding unsaturated analogues in 54-95% yield. In addition, only two steps in our developed strategy require column chromatography.

  DOI：

  10.1021/jo061810h

文献信息

• Synthesis of Lamellarin U and Lamellarin G Trimethyl Ether by Alkylation of a Deprotonated α-Aminonitrile
  作者：Johannes C. Liermann、Till Opatz

  DOI：10.1021/jo800467e

  日期：2008.6.1

  1,2,3,4-Tetrahydroisoquinoline-1-carbonitriles can serve as starting materials for the one-pot synthesis of 5,6-dihydropyrrolo[2,1a]isoquinolines and 1-benzyl-3,4-dihydroisoquinolines. The latter compounds were transformed to lamellarin G trimethyl ether and lamellarin U in short reaction sequences. This method allows the introduction of acid-sensitive protecting groups for the phenolic hydroxy functions

  1,2,3,4-四氢异喹啉-1-腈可以用作起始的一锅合成5,6-二氢吡咯并[2,1的材料一]异喹啉和1-苄基-3,4-二氢异喹啉。后面的化合物以短的反应顺序被转化为薄片蛋白G三甲醚和薄片蛋白U。这种方法允许引入用于酚羟基官能团的酸敏感保护基，该保护基在经典的Bischler-Napieralski反应的苛刻条件下会裂解。
• A Modular Synthesis of the Lamellarins:  Total Synthesis of Lamellarin G Trimethyl Ether
  作者：Scott T. Handy、Yanan Zhang、Howard Bregman

  DOI：10.1021/jo0352833

  日期：2004.4.1

  A modular synthesis of the lamellarin family of natural products has been developed that is based on the application of three iterative halogenation/cross-coupling reaction sequences. The ability to halogenate the pyrrole core in a regioselective fashion, even in the presence of highly electron-rich aryl substituents, has been established. The compatibility of Suzuki coupling conditions with free alcohols

  基于三种迭代卤化/交叉偶联反应序列的应用，已经开发了天然产物层层蛋白家族的模块合成方法。已经确立了即使在存在高度富电子的芳基取代基的情况下也能够以区域选择性方式卤化吡咯核心的能力。Suzuki偶联条件与硼酸中的游离醇和酚的相容性已用于减少保护/脱保护步骤的数量。实际上，已经确定在硼酸3上游离酚的存在对于成功地与lamellarin G三甲基醚的最终偶联是至关重要的，因为受保护的形式不能进行偶联。