methyl 5,8-dimethoxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylate | 1326317-14-9

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: methyl 5,8-dimethoxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylate
• CAS: 1326317-14-9
• 化学式: C₁₃H₁₇NO₄
• 分子量: 251.282
• InChiKey: BEJOFKOWLSCSLS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.2
• 重原子数：
  18
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.46
• 拓扑面积：
  56.8
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  methyl 5,8-dimethoxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylate 在 4-二甲氨基吡啶 、 三甲基铵三氧化硫共聚物 、 三溴化硼 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 、 乙腈 为溶剂， 反应 5.17h， 生成 sodium 2-(3-(2,5-di-O-sulfonatophenyl) propanoyl)-5,8-di-O-sulfonato-1,2,3,4-tetrahydroisoquinoline-3-carboxylate
  参考文献：
  名称：

  Designing Nonsaccharide, Allosteric Activators of Antithrombin for Accelerated Inhibition of Factor Xa

  摘要：

  Antithrombin is a key regulator of coagulation and prime target of heparins, clinically used anticoagulants. Heparins induce a two-step conformational activation of antithrombin, a process that has remained challenging to target with molecules devoid of the antithrombin-binding pentasaccharide DEFGH. Computational screening of a focused library led to the design of two tetra-sulfated N-arylacyl tetrahydroisoquinoline variants as potential nonsaccharide activators of antithrombin. A high yielding synthetic scheme based on Horner-Wadsworth-Emmons or Pictet-Spengler reactions was developed to facilitate the functionalization of the tetrahydoisoquinoline ring, which upon further amidation, deprotection, and sulfation gave the targeted nonsaccharide activators. Spectrofluorometric measurement of affinity displayed antithrombin binding affinities in the low to high micromolar range at pH 6.0, I 0.05, 25 degrees C. Measurement of second-order rate constants of antithrombin inhibition of factor Xa in the presence and absence of the designed activators showed antithrombin activation in the range of 8-80-fold in the pH 6.0 buffer. This work puts forward 20c, a novel tetra-sulfated N-arylacyl tetrahydroisoquinoline-based molecule, that activates AT only 3.8-fold less than that achieved with DEFGH, suggesting a strong possibility of rationally designing sulfated organic molecules as clinically relevant AT activators.

  DOI：

  10.1021/jm2008387
• 作为产物：
  描述：

  methyl 2-(benzyloxycarbonylamino)-3-(2,5-dimethoxyphenyl)acrylate 在 20% palladium hydroxide-activated charcoal 、 氢气 、 三氟乙酸 作用下， 以 甲醇 、 二氯甲烷 、 水 、 叔丁醇 为溶剂， 反应 5.0h， 生成 methyl 5,8-dimethoxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylate
  参考文献：
  名称：

  富含电子的 N-取代四氢异喹啉 3-羧酸酯：简洁的合成和构象研究

  摘要：

  我们实验室最近的工作表明，高度取代的、富含电子的 1,2,3,4-四氢异喹啉-3-羧酸 (THIQ3CA) 支架是一类新型抗凝剂的关键组成部分。10 THIQ3CA 类似物的合成，尤其是含有特定的、富含电子的取代基，一直是一个挑战，文献中基本上没有报道有效的方法。我们描述了三种互补的、基于甘氨酸供体的策略，用于高产合成高度取代的、富含电子的 THIQ3CA 酯。本文研究的三个甘氨酸供体包括乙内酰脲1、(±)-Boc-α-膦酰甘氨酸三甲酯2和 (±) -Z -α-膦酰甘氨酸三甲酯3. 虽然可以使用这三种中的任何一种来合成 THIQ3CA 类似物，但在三个温和、有效的步骤中使用3 可以最好地实现所需的 THIQ3CA 酯的最佳、高产率方法。使用这种方法，合成了先进的N-芳基酰基、N-芳基烷基和双-THIQ3CA 类似物的重点库。变温和溶剂依赖性 NMR 化学位移研究表明，N-芳基酰基-THIQ3CA

  DOI：

  10.1016/j.tet.2012.01.005

文献信息

• Electronically rich N-substituted tetrahydroisoquinoline 3-carboxylic acid esters: concise synthesis and conformational studies
  作者：Rami A. Al-Horani、Umesh R. Desai

  DOI：10.1016/j.tet.2012.01.005

  日期：2012.2

  boxylic acid (THIQ3CA) scaffold is a key building block for a novel class of promising anticoagulants.10 The synthesis of THIQ3CA analogs, especially containing specific, electronically rich substituents, has been a challenge and essentially no efficient methods have been reported in the literature. We describe three complementary, glycine donor-based strategies for high yielding synthesis of highly

  我们实验室最近的工作表明，高度取代的、富含电子的 1,2,3,4-四氢异喹啉-3-羧酸 (THIQ3CA) 支架是一类新型抗凝剂的关键组成部分。10 THIQ3CA 类似物的合成，尤其是含有特定的、富含电子的取代基，一直是一个挑战，文献中基本上没有报道有效的方法。我们描述了三种互补的、基于甘氨酸供体的策略，用于高产合成高度取代的、富含电子的 THIQ3CA 酯。本文研究的三个甘氨酸供体包括乙内酰脲1、(±)-Boc-α-膦酰甘氨酸三甲酯2和 (±) -Z -α-膦酰甘氨酸三甲酯3. 虽然可以使用这三种中的任何一种来合成 THIQ3CA 类似物，但在三个温和、有效的步骤中使用3 可以最好地实现所需的 THIQ3CA 酯的最佳、高产率方法。使用这种方法，合成了先进的N-芳基酰基、N-芳基烷基和双-THIQ3CA 类似物的重点库。变温和溶剂依赖性 NMR 化学位移研究表明，N-芳基酰基-THIQ3CA
• Designing Nonsaccharide, Allosteric Activators of Antithrombin for Accelerated Inhibition of Factor Xa
  作者：Rami A. Al-Horani、Aiye Liang、Umesh R. Desai

  DOI：10.1021/jm2008387

  日期：2011.9.8

  Antithrombin is a key regulator of coagulation and prime target of heparins, clinically used anticoagulants. Heparins induce a two-step conformational activation of antithrombin, a process that has remained challenging to target with molecules devoid of the antithrombin-binding pentasaccharide DEFGH. Computational screening of a focused library led to the design of two tetra-sulfated N-arylacyl tetrahydroisoquinoline variants as potential nonsaccharide activators of antithrombin. A high yielding synthetic scheme based on Horner-Wadsworth-Emmons or Pictet-Spengler reactions was developed to facilitate the functionalization of the tetrahydoisoquinoline ring, which upon further amidation, deprotection, and sulfation gave the targeted nonsaccharide activators. Spectrofluorometric measurement of affinity displayed antithrombin binding affinities in the low to high micromolar range at pH 6.0, I 0.05, 25 degrees C. Measurement of second-order rate constants of antithrombin inhibition of factor Xa in the presence and absence of the designed activators showed antithrombin activation in the range of 8-80-fold in the pH 6.0 buffer. This work puts forward 20c, a novel tetra-sulfated N-arylacyl tetrahydroisoquinoline-based molecule, that activates AT only 3.8-fold less than that achieved with DEFGH, suggesting a strong possibility of rationally designing sulfated organic molecules as clinically relevant AT activators.