lamellarin I | 149355-75-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡咯
• 英文名称: lamellarin I
• 英文别名: 12-(3,4-Dimethoxyphenyl)-7-hydroxy-8,16,17,18-tetramethoxy-4-oxa-1-azapentacyclo[11.8.0.02,11.05,10.014,19]henicosa-2(11),5,7,9,12,14,16,18-octaen-3-one
• CAS: 149355-75-9
• 化学式: C₃₁H₂₉NO₉
• 分子量: 559.573
• InChiKey: LIVLXJLCXACUMU-UHFFFAOYSA-N

物化性质

• 熔点：
  243-247 °C(Solv: methanol (67-56-1))
• 沸点：
  795.8±60.0 °C(Predicted)
• 密度：
  1.38±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.8
• 重原子数：
  41
• 可旋转键数：
  7
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.26
• 拓扑面积：
  107
• 氢给体数：
  1
• 氢受体数：
  9

反应信息

• 作为反应物：
  描述：

  lamellarin I 在 4-二甲氨基吡啶 、 三乙胺 、 2,3-二氯-5,6-二氰基-1,4-苯醌 作用下， 以 二氯甲烷 为溶剂， 反应 4.0h， 生成 14-(3,4-dimethoxyphenyl)-3-acetoxy-2,10,11,12-tetramethoxy-6H-chromeno[4',3':4,5]pyrrolo[2,1-a]isoquinolin-6-one
  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：

  3,4-二甲氧基苯乙酸 在 palladium on activated charcoal 草酰氯 、 氢气 、 sodium hydride 、 碳酸氢钠 、 sodium carbonate 、 N,N-二甲基甲酰胺 、 三氯氧磷 作用下， 以 四氢呋喃 、 二氯甲烷 、 水 、 乙酸乙酯 、 N,N-二甲基甲酰胺 、 乙腈 为溶剂， 20.0 ℃ 、517.11 kPa 条件下， 反应 25.0h， 生成 lamellarin I
  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

• β-Selective C–H Arylation of Pyrroles Leading to Concise Syntheses of Lamellarins C and I
  作者：Kirika Ueda、Kazuma Amaike、Richard M. Maceiczyk、Kenichiro Itami、Junichiro Yamaguchi

  DOI：10.1021/ja508449y

  日期：2014.9.24

  The first general β-selective C-H arylation of pyrroles has been developed by using a rhodium catalyst. This C-H arylation reaction, which is retrosynthetically straightforward but results in unusual regioselectivity, could result in de novo syntheses of pyrrole-derived natural products and pharmaceuticals. As such, we have successfully synthesized polycyclic marine pyrrole alkaloids, lamellarins C

  吡咯的第一个通用 β 选择性 CH 芳基化已通过使用铑催化剂开发。这种 CH 芳基化反应在逆向合成上很简单，但会产生不寻常的区域选择性，可以从头合成吡咯衍生的天然产物和药物。因此，我们通过使用吡咯与芳基碘化物的这种β-选择性芳基化（CH / Cl 偶联）和新的双 CH / CH 偶联作为关键步骤，成功合成了多环海洋吡咯生物碱、层状菌素 C 和 I。
• Syntheses of Lamellarins I and K by [3 + 2] Cycloaddition of a Nitrone to an Alkyne
  作者：Maite Díaz、Enrique Guitián、Luis Castedo

  DOI：10.1055/s-2001-15143

  日期：——

  Lamellarins I and K were obtained by a new approach based on the 1,3-dipolar cycloaddition of a nitrone to an alkyne. The key cycloaddition yields an isoxazoline which rearranges to afford the central pyrrole ring.

  层层素 I 和 K 是通过一种新方法获得的，该方法基于腈氧化物与炔烃的 1,3-双极环加成反应。关键的环加成反应产生了异噁唑啉，随后重排形成中心吡咯环。
• Total Synthesis of Natural and Unnatural Lamellarins with Saturated and Unsaturated D-Rings
  作者：Poonsakdi Ploypradith、Thaninee Petchmanee、Poolsak Sahakitpichan、Nichole D. Litvinas、Somsak Ruchirawat

  DOI：10.1021/jo061810h

  日期：2006.12.1

  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.