14-(3,4-dimethoxyphenyl)-3-hydroxy-2,11,12-trimethoxy-6H-[1]benzopyrano[4',3':4,5]pyrrolo-[2,1-a]isoquinolin-6-one

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡咯
• 英文名称: 14-(3,4-dimethoxyphenyl)-3-hydroxy-2,11,12-trimethoxy-6H-[1]benzopyrano[4',3':4,5]pyrrolo-[2,1-a]isoquinolin-6-one
• 英文别名: 14-(3,4-dimethoxyphenyl)-3-hydroxy-2,11,12-trimethoxy-6H-chromeno[4',3':4,5]pyrrolo[2,1-a]isoquinolin-6-one；lamellarin η；lamellarin-η；Lamellarin-eta；12-(3,4-dimethoxyphenyl)-7-hydroxy-8,16,17-trimethoxy-4-oxa-1-azapentacyclo[11.8.0.02,11.05,10.014,19]henicosa-2(11),5,7,9,12,14,16,18,20-nonaen-3-one
• 化学式: C₃₀H₂₅NO₈
• 分子量: 527.53
• InChiKey: IXYCWCGUQZJPJG-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.3
• 重原子数：
  39
• 可旋转键数：
  6
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.17
• 拓扑面积：
  97.1
• 氢给体数：
  1
• 氢受体数：
  8

反应信息

• 作为产物：
  描述：

  3,4-二甲氧基苯乙酸 在 palladium on activated charcoal 4-二甲氨基吡啶 、 氢氧化钾 、 草酰氯 、 氢气 、 sodium hydride 、 碳酸氢钠 、 sodium carbonate 、 三乙胺 、 N,N-二甲基甲酰胺 、 2,3-二氯-5,6-二氰基-1,4-苯醌 、 三氯氧磷 作用下， 以 四氢呋喃 、 乙醇 、 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 29.0h， 生成 14-(3,4-dimethoxyphenyl)-3-hydroxy-2,11,12-trimethoxy-6H-[1]benzopyrano[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

文献信息

• Synthesis of Lamellarins via Regioselective Assembly of 1,2-Diarylated [1]Benzopyrano[3,4-b]pyrrol-4(3H)-one Core
  作者：Tsutomu Fukuda、Takatoshi Katae、Issei Harada、Masatomo Iwao

  DOI：10.3987/com-16-s(s)63

  日期：——

  A modular synthesis of lamellarins has been developed. The key reactions in this synthesis are the assembly of 1,2-diarylated [1]benzopyrano[3,4-b]pyrrol-4(3H)-ones from a preexisting [1]benzopyrano[3,4-b]pyrrol4(3H)-one core and the appropriate arylboronic acids. The obtained 1,2-diarylated [1]benzopyrano[3,4-b]pyrrol-4(3H)-ones could be easily converted into the corresponding lamellarin derivatives

  已经开发了层状蛋白的模块化合成。该合成中的关键反应是由预先存在的[1]苯并吡喃[3,4-b]吡咯4( 3H)-一个核心和适当的芳基硼酸。得到的1,2-二芳基[1]苯并吡喃[3,4-b]pyrrol-4(3H)-ones可以通过吡咯氮和C2芳环之间的分子内环化很容易地转化为相应的层状结构衍生物。引言 层层素是一种多环吡咯生物碱，具有独特的 14-苯基-6H-[1]苯并吡喃[4́,3́:4,5]吡咯并[2,1-a]异喹啉-6-环系统。在极少数情况下（层状蛋白 O、P、Q 和 R），这些化合物具有简单的非稠合 3,4-diarylpyrrole-2-carboxylate 结构。自从第一次从海洋前支软体动物 Lamellaria sp. 中分离出层状蛋白 A-D。1985 年，从被囊类动物、海绵类和前枝类动物中分离出 50 多种层状蛋白。这些层状蛋白表现出广泛的有用生物活性：针对几种癌细胞系的有效抗增殖活性、多药耐药性
• A High-Yielding Modular Access to the Lamellarins: Synthesis of Lamellarin G Trimethyl Ether, Lamellarin η and Dihydrolamellarin η
  作者：Dennis Imbri、Johannes Tauber、Till Opatz

  DOI：10.1002/chem.201303563

  日期：2013.11.4

  A deprotonated α‐aminonitrile serves as a key intermediate in a highly efficient (95 % per step on average; see scheme) modular synthetic approach to the lamellarin alkaloids. Its reaction with an α,β‐unsaturated aldehyde forms the central pyrrole ring in a one‐pot procedure. The construction of the fused pentacyclic skeleton is completed by a microwave‐assisted Ullmann‐type lactone formation.

  去质子化的α-氨基腈是薄片状生物碱高效模块化合成方法的关键中间体（平均每步95％;参见方案）。它与α，β-不饱和醛的反应在一锅法中形成了中心吡咯环。微波辅助的Ullmann型内酯的形成完成了稠合五环骨架的构建。
• Scalable Total Syntheses of Some Natural and Unnatural Lamellarins: Application of a One-Pot Domino Process for Regioselective Access to the Central 1,2,4-Trisubstituted Pyrrole Core
  作者：Virendra Kumar、Annapurna Awasthi、Abdus Salam、Tabrez Khan

  DOI：10.1021/acs.joc.9b01521

  日期：2019.9.20

  Short and scalable total syntheses of lamellarin G trimethyl ether, lamellarin D trimethyl ether, lamellarin H, lamellarin η, dihydrolamellarin η, and lamellarin U have been realized in four to six linear steps with an overall yield of ≤22%. Highlights of the synthesis include single-step access to the central 1,2,4-trisubstituted pyrrole core in a highly regioselective manner via a one-pot [3+2]

  lamellarin G三甲基醚，lamellarin D三甲基醚，lamellarin H，lamellarinη，二氢lamellarinη和lamellarin U的短而可扩展的总合成已通过四至六个线性步骤实现，总收率≤22％。合成的重点包括通过基于一锅[3 + 2]环加成/消除/芳香化序列的多米诺法，以高度区域选择性的方式一步一步进入中心1,2,4-三取代的吡咯核心。随后，在单锅操作中，钯介导的双CH氧化双偶联提供了层状蛋白中存在的五环香豆素融合的吡咯并二氢异喹啉核心的通道。
• Synthesis and Structure−Activity Relationship Study of Lamellarin Derivatives
  作者：Fumito Ishibashi、Shinji Tanabe、Tatsuya Oda、Masatomo Iwao

  DOI：10.1021/np0104525

  日期：2002.4.1

  Ten derivatives (3-12) of marine alkaloid lamellarin D (1) were synthesized and evaluated for cytotoxicity against a HeLa cell line in an effort to examine their structure-activity relationships. It appeared that the hydroxyl groups at positions C-8 and C-20 of 1 were important structural requirements for cytotoxic activity, while the hydroxyl group at C-14 and the two methoxy groups at C-13 and C-21 were not necessary for the activity.