5,8-dimethoxyisoquinoline | 55087-23-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 异喹啉及其衍生物
• 英文名称: 5,8-dimethoxyisoquinoline
• CAS: 55087-23-5
• 化学式: C₁₁H₁₁NO₂
• 分子量: 189.214
• InChiKey: AFVZHJWOFYVPRE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  14
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.18
• 拓扑面积：
  31.4
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  5,8-dimethoxyisoquinoline 在 N-溴代丁二酰亚胺(NBS) 、 cerium(III) chloride 、 硫酸 作用下， 以 四氢呋喃 、 乙醇 、 水 为溶剂， 反应 68.0h， 生成 7-(甲基氨基)异喹啉-5,8-二酮
  参考文献：
  名称：

  Exploitation of a Tuned Oxidation with N-Haloimides in the Synthesis of Caulibugulones A–D

  摘要：

  Marine alkaloids caulibugulones A-D were synthesized in six steps starting from the readily available 2,5-dimethoxybenzaldehyde. Pomeranz-Fritsch reaction of N-(2,S-dimethoxybenzyl)-N-(2,2-dimethoxyethyl)-2-nitrobenzenesulfonamide proceeded smoothly to give 5,8-dimethoxyisoquinoline, which was oxidized to isoquinolinadiones by a tunable oxidation reaction with N-haloimides. Therefore, NBS furnished direct conversion to the isoquinoline-5,8-dione; alternatively, N-haloimides of cyanuric acid provided both oxidation and halogenation generating 6,7-dihaloisoquinoline-5,8-diones. Aminolyses of these isoquinolinediones with methylamine or ethanolamine produced the isoquinolinedione alkaloids caulibugulones A-D in 24-57% overall yield.

  DOI：

  10.1021/jo302772t
• 作为产物：
  描述：

  N-[2-(2,5-二甲氧基苯基)乙基]甲酰胺 在 palladium on activated charcoal 、 甲苯 、 萘烷 、 三氯氧磷 作用下， 生成 5,8-dimethoxyisoquinoline
  参考文献：
  名称：

  Contemporary state of the investigation of the influence of the discharge of rivers on the hydrologic structure of the Black Sea

  摘要：

  DOI：

  10.1007/bf02519260

文献信息

• Synthesis of 5,6-, 5,8- and 7,8-Isoquinolinediones from the Corresponding Isoquinolinols and Dimethoxyisoquinolines.
  作者：Yoshiyasu KITAHARA、Tatsuya NAKAI、Shinsuke NAKAHARA、Manabu AKAZAWA、Masaro SHIMIZU、Akinori KUBO

  DOI：10.1248/cpb.39.2256

  日期：——

  5, 8-Isopuinolinediones (12, 18, 25), 7, 8-isoquinolinediones (14, 19) and 5, 6-isoquinolinediones (26) were synthesized by oxidative demethylation of the corresponding dimethoxyisoquinolines with cerium(IV) ammonium nitrate or silver(II) oxide. 8-Dialkylamino-5, 6-isoquinolinediones (31) and 3, 5-bis(dialkylamino)-7, 8-isoquinolinediones (33) were prepared by copper(II)-catalyzed oxidation of the corresponding isoquinolinols with secondary amines. 5, 8-Isoquinolinediones (29, 34, 40) were also prepared.

  5, 8-异喹啉二酮（12, 18, 25）、7, 8-异喹啉二酮（14, 19）和5, 6-异喹啉二酮（26）是通过与铈（IV）铵硝酸盐或银（II）氧化物的氧化脱甲基反应合成的。8-二烷基氨基-5, 6-异喹啉二酮（31）和3, 5-双（双烷基氨基）-7, 8-异喹啉二酮（33）是通过铜（II）催化的相应异喹啉醇与二级胺的氧化反应制备的。5, 8-异喹啉二酮（29, 34, 40）也已被制备。
• .alpha.-Adrenergic agents. 1. Direct-acting .alpha.1 agonists related to methoxamine
  作者：R. M. DeMarinis、W. M. Bryan、D. H. Shah、J. P. Hieble、R. G. Pendleton

  DOI：10.1021/jm00144a012

  日期：1981.12

  A series of phenylethylamines related to methoxamine has been prepared and evaluated for direct alpha 1-receptor agonist activity. It has been observed that for open-chain compounds such as methoxamine, in which the amine-containing portion is free to adopt numerous conformations, an hydroxyl group is necessary for direct alpha 1-adrenergic activity. When the hydroxyl is removed, however, the direct

  已经制备了一系列与甲氧胺有关的苯乙胺，并对其直接的α1受体激动剂活性进行了评估。已经观察到，对于其中含胺部分自由地采用许多构象的开环化合物如甲恶胺，羟基对于直接的α1-肾上腺素能活性是必需的。但是，当除去羟基时，除非胺被引入到更空间确定的结构中，否则活性的直接成分将大大降低。根据我们的研究，我们得出结论，为了使苯乙胺作为直接的α1受体激动剂具有活性，它应具有相对于取代的苯环而言处于完全延伸构象的β氮。为了获得最佳效价，氮应环外成饱和的六元环。只要胺占据相对于分子的芳族部分的空间的明确定义的区域，就可以进一步将环外或环内结合到另外的环中。一些更有效的化合物作为α1受体激动剂的ED50值约为1 X 10（-7）M。
• Regioselection Switch in Nucleophilic Addition to Isoquinolinequinones: Mechanism and Origin of the Regioselectivity in the Total Synthesis of Ellipticine
  作者：Joaquim A. M. Castro、Bruno K. Serikava、Christian R. S. Maior、Fabrício F. Naciuk、Silvana A. Rocco、Carolina B. P. Ligiéro、Nelson H. Morgon、Paulo C. M. L. Miranda

  DOI：10.1021/acs.joc.1c02952

  日期：2022.6.17

  Ellipticine was synthesized in six steps and 20% global yield starting from the readily available 2,5-dimethoxy isoquinoline. Unprecedented regioselective control of the nucleophilic attack on the isoquinoline-5,8-dione is first described. Investigation of the possible pathways of this transformation through density functional theory calculations reveals unexpected N-oxide assistance in cascade tautomerizations

  从容易获得的 2,5-二甲氧基异喹啉开始，玫瑰树碱通过六个步骤合成，全球产率为 20%。首先描述了对异喹啉-5,8-二酮的亲核攻击的前所未有的区域选择性控制。通过密度泛函理论计算对这种转变的可能途径的研究揭示了在级联互变异构中意外的N-氧化物辅助，这对于指导亲核攻击和加速整个过程至关重要。使用这种策略，我们制备了苯胺-异喹啉二酮加合物并将其提交给分子内双 C-H 交叉偶联活化以提供玫瑰树碱，其在 MeLi 添加/BH 3还原序列后得到玫瑰树碱。
• The ceric ammonium nitrate mediated synthesis of quinoline and isoquinoline quinones.
  作者：Akinori Kubo、Yoshiyasu Kitahara、Shinsuke Nakahara、Ryuichi Numata

  DOI：10.1248/cpb.31.341

  日期：——

  The use of ceric ammonium nitrate (CAN) for the oxidative demethylation of various quinoline and isoquinoline hydroquinone 5, 8-dimethylethers and 5, 6, 8- or 5, 7, 8-trimethylethers, and its application to the preparation of isoquinoline quinone antibiotics, mimocin (5f) and renierone (5g) are described.

  本文描述了使用硝酸铈铵（CAN）对各种喹啉和异喹啉的 hydroquinone 5, 8-二甲醚以及 5, 6, 8-或 5, 7, 8-三甲醚进行氧化去甲基化的过程，及其在制备异喹啉醌抗生素 mimocin（5f）和 renierone（5g）中的应用。
• HETEROCYCLIC COMPOUNDS, THEIR PREPARATION AND THEIR USE AS MEDICAMENTS, IN PARTICULAR AS ANTI-ALZHEIMER AGENTS
  申请人：Marsais Francis

  公开号：US20090062279A1

  公开（公告）日：2009-03-05

  The invention is related to compound which comprises at least one radical C═Y, Y being O or S, and an oxidable and non protonable nitrogen atom N wherein the distance (d) between the at least one carbon atom of the radical group C═Y and the nitrogen atom, when oxidized, is comprised between 0.3 and 0.8 nanometers. The invention is related to new heterocyclic compounds defined by formula G, their preparation, to pharmaceutical compositions comprising them and to their use as therapeutic agents, particularly in the treatment of neurodegenerative or Alzheimer disease.

  本发明涉及一种化合物，其包含至少一个基团C═Y，其中Y为O或S，以及一个可氧化且不可质子化的氮原子N，其中在氧化时，基团C═Y的至少一个碳原子与氮原子之间的距离(d)在0.3至0.8纳米之间。本发明涉及由公式G定义的新杂环化合物及其制备方法，涉及包含它们的制药组合物以及它们在治疗神经退行性或阿尔茨海默病方面的用途。