lamellarin L | 149378-57-4

• 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 L
• 英文别名: 7,17-dihydroxy-12-(3-hydroxy-4-methoxyphenyl)-8,16-dimethoxy-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: 149378-57-4
• 化学式: C₂₈H₂₃NO₈
• 分子量: 501.493
• InChiKey: KVCRPCFZFYJZMJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  37
• 可旋转键数：
  4
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.18
• 拓扑面积：
  120
• 氢给体数：
  3
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  lamellarin L 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 22.0h， 生成 3,11-bis(acetoxy)-14-(3-acetoxy-4-methoxyphenyl)-2,12-dimethoxy-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
• 作为产物：
  描述：

  (3-苄氧基-4-甲氧基-苯基)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 L
  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

• Total synthesis of lamellarins D, L, and N
  作者：Naotaka Fujikawa、Takeshi Ohta、Tomohiro Yamaguchi、Tsutomu Fukuda、Fumito Ishibashi、Masatomo Iwao

  DOI：10.1016/j.tet.2005.10.014

  日期：2006.1

  Total synthesis of cytotoxic marine alkaloids, lamellarins D, L, and N, has been achieved by using Hinsberg-type pyrrole synthesis and palladium-catalyzed Suzuki–Miyaura coupling of the 3,4-dihydroxypyrrole bistriflate 6 as the key reactions. The total yields of lamellarins D, L, and N from the common intermediate 6 are 54, 58, and 50%, respectively.

  通过使用Hinsberg型吡咯合成法和钯催化的3,4-二羟基吡咯二酚6的Suzuki-Miyaura偶联，已经完成了细胞毒性海洋生物碱，薄片蛋白D，L和N的总合成。普通中间体6的层状蛋白D，L和N的总产率分别为54％，58％和50％。
• Total Synthesis of Lamellarins G, J, L, and Z Using One-Pot Halogen Dance/Negishi Coupling
  作者：Kazuki Morii、Yuto Yasuda、Daiki Morikawa、Atsunori Mori、Kentaro Okano

  DOI：10.1021/acs.joc.1c01505

  日期：2021.10.1

  A bottom-up synthesis of lamellarins G, J, L, and Z was achieved via one-pot halogen dance/Negishi coupling of a lithiated dibromopyrrole derivative. The easily accessible dibromopyrrole bearing an ester moiety underwent halogen dance smoothly at −78 °C within 10 min. The resultant α-pyrrolyllithium was transmetalated to the corresponding organozinc species, which was then coupled with an aryl iodide

  层状蛋白 G、J、L 和 Z 的自下而上合成是通过锂化二溴吡咯衍生物的一锅卤素舞蹈/Negishi 偶联实现的。易于获得的带有酯部分的二溴吡咯在-78°C 下10 分钟内顺利进行了卤素舞蹈。得到的 α-吡咯锂被金属转移到相应的有机锌物质上，然后在催化钯的存在下与芳基碘化物偶联以提供完全取代的吡咯。随后进行卤素 - 锂交换以仅在靠近酯部分的 β 位置掺入硼酸酯基团。这种合成中间体允许逐步二芳基化，用于层状蛋白 G、J、L 和 Z 的全合成。
• Gaining diversity in solid-phase synthesis by modulation of cleavage conditions from hydroxymethyl-based supports. Application to lamellarin synthesis
  作者：Pablo Cironi、Carmen Cuevas、Fernando Albericio、Mercedes Álvarez

  DOI：10.1016/j.tet.2004.05.119

  日期：2004.9

  The application of a number of Lewis acids as a cleavage/deprotection method in the solid-phase synthesis of organic molecules can render several analogues, which, after purification, can be submitted for biological evaluation. (C) 2004 Elsevier Ltd. All rights reserved.
• 10.1002/(sici)1521-3765(20000403)6:7<1147::aid-chem1147<3.3.co;2-t
  作者：Peschko, Christian、Winklhofer, Christian、Steglich, Wolfgang

  DOI：10.1002/(sici)1521-3765(20000403)6:7<1147::aid-chem1147<3.3.co;2-t

  日期：——
• Modular Synthesis of Lamellarins via Regioselective Assembly of 3,4,5-Differentially Arylated Pyrrole-2-carboxylates
  作者：Masashi Komatsubara、Teppei Umeki、Tsutomu Fukuda、Masatomo Iwao

  DOI：10.1021/jo402181w

  日期：2014.1.17

  A modular synthesis of lamellarins via 3,4,5-differentially arylated pyrrole-2-carboxylate intermediates has been developed. The key reactions employed are Br-Li exchange-methoxycarbonylation of 2,5-dibromo-1-(tert-butoxycarbonyl)-1H-pyrrole (1) followed by palladium-catalyzed iterative Suzuki-Miyaura coupling of the pyrrole core. The 3,4,5-triarylpyrrole 4 thus synthesized was readily converted to 5,6-saturated lamellarin L (2) and 5,6-unsaturated lamellarin N (3) via lactonization followed by annulation of the pyrrole nitrogen and lateral aromatic ring at C5 using 2-bromoethyl phenyl sulfide or bromoacetaldehyde dimethyl acetal as two-carbon homologation agents. In principle, this strategy allows the production of diverse lamellarins in short steps with high yields using readily accessible arylboronic acids as aromatic modules.