oleracein E

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 四氢异喹啉
• 英文名称: oleracein E
• 英文别名: (±)-trolline；salsoline A；8,9-dihydroxy-1,2,3,5,6,10b-hexahydropyrrolo[2,1-a]isoquinolin-3-one；8,9-Dihydroxy-1,5,6,10B-tetrahydropyrrolo[2,1-A]isoquinolin-3(2H)-one；8,9-dihydroxy-2,5,6,10b-tetrahydro-1H-pyrrolo[2,1-a]isoquinolin-3-one
• 化学式: C₁₂H₁₃NO₃
• 分子量: 219.24
• InChiKey: LJIDRFNRDLYHNC-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.6
• 重原子数：
  16
• 可旋转键数：
  0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.42
• 拓扑面积：
  60.8
• 氢给体数：
  2
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  oleracein E 、 2-溴-N-苯乙酰胺 在 potassium carbonate 作用下， 以 乙醇 为溶剂， 反应 6.0h， 以63%的产率得到8,9-bis(phenylacetamide)-1,2,3,5,6,10a-hexahydropyrrolo[2,1-a]isoquinolin-3-one
  参考文献：
  名称：

  Synthesis of new antimicrobial pyrrolo[2,1-a]isoquinolin-3-ones

  摘要：

  The attractive structure of the pyrroloisoquinoline moiety, together with its potential antimicrobial activity, encouraged us to prepare six 8-substituted and seven 8,9-disubstituted-1,2,3,5,6,10b-hexahydropyrrolo[2,1-a]isoquinolin-3-ones in a few steps with good yields. We applied a convenient methodology via double intramolecular cyclization conducted by a Bischler-Napieralski cyclodehydration-imine reduction sequence, which is widely employed in the synthesis of isoquinoline alkaloids. Therefore, we synthesized three series of these pyrrolo[2,1-a]isoquinolin-3-ones characterized by the substituent at the 8-position or 8,9-positions of the aromatic ring: (a) different side chains are attached to an 8-OH group (series 1); (b) a chlorine atom is attached to the 8-position (series 2); and (c) 8- and 9-carbons are bearing an identical group (series 3). The compounds bearing a benzylic moiety at the 8-position, for example, 8-benzyloxy-pyrrolo[2,1-a]isoquinolin-3-one (1a) and 8-(4-fluorobenzyloxy)-pyrrolo[2,1-a]isoquinolin-3-one (1e), as well as, a 8-chloro-9-methoxy moiety including the 8-chloro-9-methoxy-pyrrolo[2,1-a]isoquinolin-3-one (2a), provided the most fungicide and bactericide agents, respectively. (C) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2012.09.033
• 作为产物：
  描述：

  N-<2-(3,4-dimethoxyphenyl)ethyl>succinimide 在 三氟甲磺酸 、 三溴化硼 作用下， 以 二氯甲烷 为溶剂， 反应 8.25h， 生成 oleracein E
  参考文献：
  名称：

  利用 TfOH 介导的酰亚胺羰基活化合成缩合四氢异喹啉类生物碱

  摘要：

  通过使用 TfOH 介导的（TfOH = 三氟甲磺酸）酰亚胺羰基活化和环化策略，从相应的酰亚胺成功组装了基于异喹啉的多环内酰胺，例如异吲哚异喹啉酮、吡咯并异喹啉酮和苯并 [a] 喹啉酮。通过使用这种简单的方法，异喹啉生物碱松脆 A、三乙醇胺/油茶素 E 和红菊素以外消旋形式成功合成。不对称 N-苯乙基邻苯二甲酰亚胺与 TfOH 的反应显示出优异的区域选择性，这通过 DFT 计算得到了合理化。

  DOI：

  10.1002/ejoc.201403617

文献信息

• Design, synthesis, biological evaluation and molecular modelling of substituted pyrrolo[2,1-<i>a</i>]isoquinolinone derivatives: discovery of potent inhibitors of AChE and BChE
  作者：Oscar Parravicini、Emilio Angelina、Roque Spinelli、Francisco Garibotto、Álvaro S. Siano、Laura Vila、Nuria Cabedo、Diego Cortes、Ricardo D. Enriz

  DOI：10.1039/d1nj00345c

  日期：——

  We report here the design, synthesis and biological evaluation of a new series of substituted pyrrolo[2,1-a]isoquinolin-3-one derivatives, some of which have strong inhibitory activity against both AChE and BChE enzymes. The design of these new inhibitors was carried out taking rivastigmine as the starting structure. Thus, on the basis of an exhausting molecular modeling study using combined techniques

  我们在这里报告了一系列新的取代吡咯并[2,1- a]的设计，合成和生物学评估。]异喹啉-3-酮衍生物，其中一些对AChE和BChE酶都具有很强的抑制活性。这些新抑制剂的设计以利凡斯的明为起始结构。因此，在使用组合技术（对接，动态分子模拟和QTAIM计算）进行的详尽的分子建模研究的基础上，我们获得了比参考化合物rivastigmine具有更强抑制作用的新配体。QTAIM分析为我们提供了有关稳定不同配体-酶复合物的分子相互作用的详细信息。这些计算表明与CAS酯位点相互作用对于这些化合物的抑制作用的重要性。尽管如此，
• One-pot chemoenzymatic synthesis of trolline and tetrahydroisoquinoline analogues
  作者：Jianxiong Zhao、Benjamin R. Lichman、John M. Ward、Helen C. Hailes

  DOI：10.1039/c7cc08024g

  日期：——

  Chemoenzymatic reaction cascades can provide access to chiral compounds from low-cost starting materials in one pot. Here we describe one-pot asymmetric routes to tetrahydroisoquinoline alkaloids (THIAs) using the Pictet–Spenglerase norcoclaurine synthase (NCS) followed by a cyclisation, to give alkaloids with two new heterocyclic rings. These reactions operated with a high atom economy to generate

  化学酶促反应级联反应可在一锅中从低成本原料中获得手性化合物。在这里，我们描述了使用Pictet-Spenglerase降鸟嘌呤合酶（NCS）进行一锅法到四氢异喹啉生物碱（THIAs）的一锅不对称路线，然后进行环化反应，得到具有两个新杂环的生物碱。这些反应以高原子经济性进行操作，从而以高收率产生THIA。
• P₄O₁₀/TfOH mediated domino condensation–cyclization of amines with diacids: a route to indolizidine alkaloids under catalyst- and solvent-free conditions
  作者：Ketan S. Mandrekar、Santosh G. Tilve

  DOI：10.1039/d2ra02534e

  日期：——

  employment of either a catalyst or solvent. The use of a few aliphatic and aromatic dicarboxylic acids is shown along with various primary amines. This method is suitable for synthesizing pyrrolo[2,1-a]isoquinolines, pyrido[2,1-a]isoquinolines, and isoindolo[1,2-a]isoquinolinones in excellent yields. When phthalic acid is used, a workup with either NaBH4 or a saturated NaHCO3 solution provided 12b-H or 12b-OH

  开发了一种多米诺缩合环化方法，使用 P 4 O 10 /TfOH 试剂系统合成吲哚里西啶生物碱，无需使用催化剂或溶剂。显示了一些脂肪族和芳香族二羧酸以及各种伯胺的使用。该方法适用于合成吡咯并[2,1- a ]异喹啉、吡啶并[2,1- a ]异喹啉和异吲哚[1,2- a ]异喹啉酮，收率良好。当使用邻苯二甲酸时，使用 NaBH 4或饱和 NaHCO 3溶液进行后处理得到 12 b -H 或 12 b -OH 异吲哚[1,2- a]异喹啉酮，分别。
• Iron-Catalyzed Oxidative Coupling of Alkylamides with Arenes through Oxidation of Alkylamides Followed by Friedel−Crafts Alkylation
  作者：Eiji Shirakawa、Nanase Uchiyama、Tamio Hayashi

  DOI：10.1021/jo102217m

  日期：2011.1.7

  FeCL(3) in combination with t-BuOOt-Bu as an oxidant was found to be an efficient catalyst for oxidation of alkylamides to alpha-(tert-butoxy)alkylamides. FeCl(2) and CuCl showed, respectively, almost the same and slightly lower activities compared with FeCl(3) in the tert-butoxylation of N-phenylpyrrolidone (1a), whereas no tert-butoxylated product was obtained by use of Fe(OTf)(3), RuCl(3), or Zr(OTf)(4). FeCl(3) was found to be effective also as a catalyst for the Friedel-Crafts alkylation with thus obtained alpha-(tert-butoxy)alkylamides. The Friedel-Crafts alkylation proceeded smoothly also in the presence of a catalytic amount of Fe(OTf)(3), RuCl(3), or Zr(OTf)(4). In contrast, FeCl(2) and CuCl, which showed certain activity toward the tert-butoxylation, failed to promote the Friedel Crafts alkylation. Among the transition metal complexes thus far examined, only FeCl(3) showed high catalytic activities for both the oxidation and the Friedel-Crafts alkylation. The bifunctionality of FeCl(3) was utilized for the oxidative coupling of alkylamides with arenes through a tandem reaction consisting of oxidation of alkylamides to alpha-(tert-butoxy)alkylamides and the following Friedel-Crafts alkylation. The FeCl(3)-catalyzed oxidative coupling is applicable to a wide variety of alkylamides and arenes, though a combination of FeCl(3) with Fe(OTf)(3) was found to be effective for the reaction of arenes with low nucleophilicity. A Fe(II)-Fe(III) catalytic cycle is concerned with the tert-butoxylation, whereas a Fe(III) complex as a Lewis acid catalyzes the Friedel-Crafts alkylation.

表征谱图