1-(3',4'-dimethoxybenzyl)-2-methyl-1,2,3,4-tetrahydroisoquinoline | 22988-16-5

• 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: 1-(3',4'-dimethoxybenzyl)-2-methyl-1,2,3,4-tetrahydroisoquinoline
• 英文别名: 1-(3,4-dimethoxybenzyl)-2-methyl-1,2,3,4-tetrahydroisoquinoline；1-(3,4-dimethoxy-benzyl)-2-methyl-1,2,3,4-tetrahydro-isoquinoline；1-(3',4'-Dimethoxybenzyl)-2-methyl-1,2,3,4-tetrahydroisoquinolin；2-Methyl-1-(3,4-dimethoxy-benzyl)-1,2,3,4-tetrahydro-isochinolin；1-[(3,4-dimethoxyphenyl)methyl]-2-methyl-3,4-dihydro-1H-isoquinoline
• CAS: 22988-16-5
• 化学式: C₁₉H₂₃NO₂
• 分子量: 297.397
• InChiKey: ZTSWJSXOHCTXJY-UHFFFAOYSA-N

物化性质

• 沸点：
  412.3±40.0 °C(Predicted)
• 密度：
  1.086±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.7
• 重原子数：
  22
• 可旋转键数：
  4
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.37
• 拓扑面积：
  21.7
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  1-(3',4'-dimethoxybenzyl)-2-methyl-1,2,3,4-tetrahydroisoquinoline 、 碘甲烷 以 乙腈 为溶剂， 生成 1-(3,4-Dimethoxy-benzyl)-2,2-dimethyl-1,2,3,4-tetrahydro-isoquinolinium; iodide
  参考文献：
  名称：

  Synthesis and biological evaluation of N-methyl-laudanosine iodide analogues as potential SK channel blockers

  摘要：

  Neuronal action potentials are followed by an afterhyperpolarisation (AHP), which is mediated by small conductance Ca2+-activated K+ channels (SK channels or KCa2 channels). This AHP plays an important role in regulating neuronal activity and agents modulating AHP amplitude could have a potential therapeutic interest. It was previously shown that N-methyl-bicuculline iodide blocks SK channels but its GABA(A) activity represents a serious drawback. In view of the structural analogy between bicuculline and laudanosine 14, several N-quaternary analogues of the latter were developed. It was shown that N-methyl-laudanosine 15 (NML) and N-ethyl-laudanosine 16 induce a reversible and relatively specific blockade of the apamin sensitive AHP in dopaminergic neurones with mean IC(50)s of 15, and 47 muM, respectively. Laudanosine 14, N-butyl-17 and N-benzyl-18 derivatives were less potent. In order to find pharmacophore elements, modifications were performed at different positions such as C-1, C-6 and C-7. Intracellular recordings on rat midbrain dopaminergic neurones were made in order to evaluate the putative blockade of SK channels by these molecules. Simplified structures such as tetrahydroisoquinoline derivatives with H or Me at C-I 1-6 presented no significant activity at 300 muM. The presence of a 1-(3,4-dimethoxybenzy]) moiety seems an important feature. Indeed, compound 8 showed a blockade of the AHP of only 33% at 300 muM while compound 13 blocked it by 67%, respectively, at the same concentration. Binding experiments were also performed. Binding affinities for SK channels are in good agreement with electrophysiological data. These results indicate that the presence of a charged nitrogen group is an essential point for the affinity on SK channels. Finally, because of the similar activity of both enantionters of NML 19 and 20, the interaction site may present a symmetrical configuration. (C) 2004 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2004.11.025
• 作为产物：
  描述：

  2-甲基异喹啉-1,3(2H,4H)-二酮 在 lithium aluminium tetrahydride 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 甲醇 为溶剂， 反应 19.0h， 生成 1-(3',4'-dimethoxybenzyl)-2-methyl-1,2,3,4-tetrahydroisoquinoline
  参考文献：
  名称：

  基于四氢异喹啉的生物活性天然产物的总合成月桂苷，Romneine，Glaucine，Dicentrine及其非天然类似物Isolaudanosine和Isoromneine

  摘要：

  摘要 从适当取代的高邻苯二甲酸开始，已经证明了标题生物碱的全合成，收率很高。利用所获得的天然产物月桂苷和romneine完成两种基于异喹啉的生物碱青霉素和二百灵的合成。碱基诱导的两种不同类型的苄基碳负离子的选择性生成，它们与3,4-二甲氧基苄基甲磺酸酯的偶联反应，区域选择性碘化以及随后的分子内芳基-芳基偶联反应以形成稠合的联芳基体系是重要的步骤。 从适当取代的高邻苯二甲酸开始，已经证明了标题生物碱的全合成，收率很高。利用所获得的天然产物月桂苷和romneine完成两种基于异喹啉的生物碱青霉素和二百灵的合成。碱基诱导的两种不同类型的苄基碳负离子的选择性生成，它们与3,4-二甲氧基苄基甲磺酸酯的偶联反应，区域选择性碘化以及随后的分子内芳基-芳基偶联反应以形成稠合的联芳基体系是重要的步骤。

  DOI：

  10.1055/s-0036-1588920

文献信息

• Light-Induced Alkylation of (Hetero)aromatic Nitriles in a Transition-Metal-Free C–C-Bond Metathesis
  作者：Benjamin Lipp、Alexander Lipp、Heiner Detert、Till Opatz

  DOI：10.1021/acs.orglett.7b00652

  日期：2017.4.21

  cations which undergo a homolytic cleavage of a C(sp3)–C(sp3)-σ-bond rather than the well-known α-C–H-scission. The resulting carbon-centered radicals are used in the ipso-substitution of (hetero)aromatic nitriles proceeding through another single-electron transfer-mediated C–C-bond cleavage and formation.

  光诱导的C–C-σ键易位是通过无过渡金属活化1-苄基1,2,3中未应变的C（sp 3）–C（sp 3）-σ键实现的。 4-四氢异喹啉。这些前体胺的光氧化还原介导的单电子氧化产生自由基阳离子，该阳离子经历C（sp 3）–C（sp 3）-σ键的均质裂解，而不是众所周知的α-C–H断裂。由此产生的以碳为中心的自由基被用于（杂）芳族腈的ipso取代，然后通过另一种单电子转移介导的C–C键裂解和形成。
• Dopamine Transporter and Catechol-<i>O</i>-methyltransferase Activities Are Required for the Toxicity of 1-(3‘,4‘-Dihydroxybenzyl)-1,2,3,4-tetrahydroisoquinoline
  作者：Hiroshi Kawai、Yaichiro Kotake、Shigeru Ohta

  DOI：10.1021/tx000047y

  日期：2000.12.1

  1-(3',4'-Dihydroxybenzyl)-1,2,3,4-tetrahydroisoquinoline [3',4'DHBnTIQ (1)] is an endogenous parkinsonism-inducing substance. It is taken up into dopaminergic neurons via the dopamine transporter, inhibits mitochondrial respiration, and induces parkinsonism in mice. We synthesized four derivatives [aromatized, N-methylated, N-methyl-aromatized, and O-methylated (2-5, respectively)] and studied the cellular uptake and cytotoxicity of 1-5, as well as the metabolism of 1. All except the O-methyl derivative (5) were specifically taken up by the dopamine transporter, but 1 was taken up most efficiently. Relative to 1, oxidation reduced upsilon (max), N-methylation markedly increased K-m, and O-methylation eliminated the uptake activity. The cytotoxicity of 1-5 was examined in a mesencephalic cell. primary culture. Compound I reduced cell viability by nearly 80% at 100 muM, but the other compounds had little or no effect on cell viability. In vivo and in vitro studies revealed that I was O-methylated by soluble catechol-O-methyltransferase (COMT). Aromatization and N-methylation of 1 were not observed. We found that dopamine transporter inhibitors and a COMT inhibitor each blocked the cytotoxicity of I, indicating that uptake and O-methylation are both necessary for neurotoxicity. Thus, we consider that 1 is taken up into dopaminergic neurons via the dopamine transporter and then converted by COMT to 5, which has cytotoxic and parkinsonism-inducing activities.
• US4192877A
  申请人：——

  公开号：US4192877A

  公开（公告）日：1980-03-11
• Total Synthesis of Tetrahydroisoquinoline-Based Bioactive Natural Products Laudanosine, Romneine, Glaucine, Dicentrine, and Their Unnatural Analogues Isolaudanosine and Isoromneine
  作者：Narshinha Argade、Ravi Jangir

  DOI：10.1055/s-0036-1588920

  日期：——

  Abstract Starting from suitably substituted homophthalic acids, total synthesis of titled alkaloids have been demonstrated in very good yields. The obtained natural products laudanosine and romneine were utilized to accomplish synthesis of two isoquinoline-based alkaloids glaucine and dicentrine. Base-induced selective generation of two different types of benzylic carbanions, their coupling reactions

  摘要 从适当取代的高邻苯二甲酸开始，已经证明了标题生物碱的全合成，收率很高。利用所获得的天然产物月桂苷和romneine完成两种基于异喹啉的生物碱青霉素和二百灵的合成。碱基诱导的两种不同类型的苄基碳负离子的选择性生成，它们与3,4-二甲氧基苄基甲磺酸酯的偶联反应，区域选择性碘化以及随后的分子内芳基-芳基偶联反应以形成稠合的联芳基体系是重要的步骤。 从适当取代的高邻苯二甲酸开始，已经证明了标题生物碱的全合成，收率很高。利用所获得的天然产物月桂苷和romneine完成两种基于异喹啉的生物碱青霉素和二百灵的合成。碱基诱导的两种不同类型的苄基碳负离子的选择性生成，它们与3,4-二甲氧基苄基甲磺酸酯的偶联反应，区域选择性碘化以及随后的分子内芳基-芳基偶联反应以形成稠合的联芳基体系是重要的步骤。
• Synthesis and biological evaluation of N-methyl-laudanosine iodide analogues as potential SK channel blockers
  作者：A. Graulich、F. Mercier、J. Scuvée-Moreau、V. Seutin、J.-F. Liégeois

  DOI：10.1016/j.bmc.2004.11.025

  日期：2005.2

  Neuronal action potentials are followed by an afterhyperpolarisation (AHP), which is mediated by small conductance Ca2+-activated K+ channels (SK channels or KCa2 channels). This AHP plays an important role in regulating neuronal activity and agents modulating AHP amplitude could have a potential therapeutic interest. It was previously shown that N-methyl-bicuculline iodide blocks SK channels but its GABA(A) activity represents a serious drawback. In view of the structural analogy between bicuculline and laudanosine 14, several N-quaternary analogues of the latter were developed. It was shown that N-methyl-laudanosine 15 (NML) and N-ethyl-laudanosine 16 induce a reversible and relatively specific blockade of the apamin sensitive AHP in dopaminergic neurones with mean IC(50)s of 15, and 47 muM, respectively. Laudanosine 14, N-butyl-17 and N-benzyl-18 derivatives were less potent. In order to find pharmacophore elements, modifications were performed at different positions such as C-1, C-6 and C-7. Intracellular recordings on rat midbrain dopaminergic neurones were made in order to evaluate the putative blockade of SK channels by these molecules. Simplified structures such as tetrahydroisoquinoline derivatives with H or Me at C-I 1-6 presented no significant activity at 300 muM. The presence of a 1-(3,4-dimethoxybenzy]) moiety seems an important feature. Indeed, compound 8 showed a blockade of the AHP of only 33% at 300 muM while compound 13 blocked it by 67%, respectively, at the same concentration. Binding experiments were also performed. Binding affinities for SK channels are in good agreement with electrophysiological data. These results indicate that the presence of a charged nitrogen group is an essential point for the affinity on SK channels. Finally, because of the similar activity of both enantionters of NML 19 and 20, the interaction site may present a symmetrical configuration. (C) 2004 Elsevier Ltd. All rights reserved.