ethyl 4-(1,3-benzodioxol-5-yl)-N-tert-butoxycarbonyl-2-(4-methoxyphenyl)pyrrolidine-3-carboxylate

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡咯烷类
• 英文名称: ethyl 4-(1,3-benzodioxol-5-yl)-N-tert-butoxycarbonyl-2-(4-methoxyphenyl)pyrrolidine-3-carboxylate
• 英文别名: 1,3-Pyrrolidinedicarboxylic acid, 4-(1,3-benzodioxol-5-yl)-2-(4-methoxyphenyl)-, 1-(1,1-dimethylethyl) 3-ethyl ester, (2R,3R,4S)-rel-；1-O-tert-butyl 3-O-ethyl (2R,3R,4S)-4-(1,3-benzodioxol-5-yl)-2-(4-methoxyphenyl)pyrrolidine-1,3-dicarboxylate
• 化学式: C₂₆H₃₁NO₇
• 分子量: 469.535
• InChiKey: KNJBEAQHWXZCEN-PTUXOGIPSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  34
• 可旋转键数：
  8
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.46
• 拓扑面积：
  83.5
• 氢给体数：
  0
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  ethyl 4-(1,3-benzodioxol-5-yl)-N-tert-butoxycarbonyl-2-(4-methoxyphenyl)pyrrolidine-3-carboxylate 在 盐酸 、 lithium hydroxide 、 sodium hydroxide 、 正丁基锂 、 双氧水 、 三甲基乙酰氯 、 三乙胺 、 N,N-二异丙基乙胺 作用下， 以 四氢呋喃 、 1,4-二氧六环 、 乙腈 为溶剂， 反应 0.5h， 生成 阿曲生坦
  参考文献：
  名称：

  2,4-Diarylpyrrolidine-3-carboxylic AcidsPotent ET_A Selective Endothelin Receptor Antagonists. 1. Discovery of A-127722

  摘要：

  We have discovered a novel class of endothelin (ET) receptor antagonists through pharmacophore analysis of the existing non-peptide ET antagonists. On the basis of this analysis, we determined that a pyrrolidine ring might replace the indan ring in SE 209670. The resultant compounds were readily prepared and amenable to extensive SAR studies. Thus a series of N-substituted trans,trans-2-(4-methoxyphenyl)-4-(1,3-benzodioxol-5-yl) pyrrolidine-3-carboxylic acids (8) have been synthesized and evaluated for binding at ET(A) and ET(B) receptors. Compounds with N-acyl and simple N-alkyl substituents had weak activity. Compounds with N-alkyl substituents containing ethers, sulfoxides, or sulfones showed increased activity. Much improved activity resulted from compounds where the N-substituents were acetamides. Compound 17u (A-127722) with the N,N-dibutylacetamide substituent is the best of the series. It has an IC50 = 0.36 nM for inhibition of ET-1 radioligand binding at the ETA(A) receptor, with a 1000-fold selectivity for the ET(A) vs the ET(B) receptor. It is also a potent inhibitor (IC50 = 0.16 nM) of phosphoinositol hydrolysis stimulated by ET-1, and it antagonized the ET-l-induced contraction of the rabbit aorta with a pA(2) = 9.20. The compound has 70% oral bioavailability in rats.

  DOI：

  10.1021/jm9505369
• 作为产物：
  描述：

  4-溴-1,2-亚甲二氧基苯 在 镍 氢气 、 叔丁基锂 作用下， 以 四氢呋喃 、 乙醇 、 水 、 乙酸乙酯 、 正戊烷 为溶剂， -78.0 ℃ 、7.0 MPa 条件下， 反应 73.5h， 生成 ethyl 4-(1,3-benzodioxol-5-yl)-N-tert-butoxycarbonyl-2-(4-methoxyphenyl)pyrrolidine-3-carboxylate
  参考文献：
  名称：

  通过 1,2-恶嗪对映选择性合成内皮素拮抗剂 ABT-627（Atrasentan）的吡咯烷核心

  摘要：

  介绍了内皮素拮抗剂 ABT-627 (Atrasentan) 的吡咯烷核心 6a 的非对映选择性合成，作为外消旋混合物或对映体纯化合物。这些合成的关键步骤是利用 1,3-苯并二氧杂环己烷-5-基锂与外消旋 6H-1,2-恶嗪 3 或对映体纯 6H-1,2-恶嗪 7 或 8 的高度非对映选择性共轭加成，然后用乙基捕获氰基甲酸酯（曼德试剂）。得到的 5,6-二氢-4H-1,2-恶嗪转化为 2,3,4-三取代的吡咯烷 6a。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)

  DOI：

  10.1002/ejoc.200300234

文献信息

• Enantioselective Synthesis of the Pyrrolidine Core of Endothelin Antagonist ABT-627 (Atrasentan) via 1,2-Oxazines
  作者：Monika Buchholz、Hans-Ulrich Reißig

  DOI：10.1002/ejoc.200300234

  日期：2003.9

  Diastereoselective syntheses of the pyrrolidine core 6a of the endothelin antagonist ABT-627 (Atrasentan) either as a racemic mixture or as an enantiopure compound are presented. The crucial steps of these syntheses utilized the highly diastereoselective conjugate addition of 1,3-benzodioxol-5-yllithium to racemic 6H-1,2-oxazine 3 or enantiopure 6H-1,2-oxazines 7 or 8, followed by trapping with ethyl

  介绍了内皮素拮抗剂 ABT-627 (Atrasentan) 的吡咯烷核心 6a 的非对映选择性合成，作为外消旋混合物或对映体纯化合物。这些合成的关键步骤是利用 1,3-苯并二氧杂环己烷-5-基锂与外消旋 6H-1,2-恶嗪 3 或对映体纯 6H-1,2-恶嗪 7 或 8 的高度非对映选择性共轭加成，然后用乙基捕获氰基甲酸酯（曼德试剂）。得到的 5,6-二氢-4H-1,2-恶嗪转化为 2,3,4-三取代的吡咯烷 6a。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)
• 2,4-Diarylpyrrolidine-3-carboxylic AcidsPotent ET_A Selective Endothelin Receptor Antagonists. 1. Discovery of A-127722
  作者：Martin Winn、Thomas W. von Geldern、Terry J. Opgenorth、Hwan-Soo Jae、Andrew S. Tasker、Steven A. Boyd、Jeffrey A. Kester、Robert A. Mantei、Radhika Bal、Bryan K. Sorensen、Jinshyun R. Wu-Wong、William J. Chiou、Douglas B. Dixon、Eugene I. Novosad、Lisa Hernandez、Kennan C. Marsh

  DOI：10.1021/jm9505369

  日期：1996.1.1

  We have discovered a novel class of endothelin (ET) receptor antagonists through pharmacophore analysis of the existing non-peptide ET antagonists. On the basis of this analysis, we determined that a pyrrolidine ring might replace the indan ring in SE 209670. The resultant compounds were readily prepared and amenable to extensive SAR studies. Thus a series of N-substituted trans,trans-2-(4-methoxyphenyl)-4-(1,3-benzodioxol-5-yl) pyrrolidine-3-carboxylic acids (8) have been synthesized and evaluated for binding at ET(A) and ET(B) receptors. Compounds with N-acyl and simple N-alkyl substituents had weak activity. Compounds with N-alkyl substituents containing ethers, sulfoxides, or sulfones showed increased activity. Much improved activity resulted from compounds where the N-substituents were acetamides. Compound 17u (A-127722) with the N,N-dibutylacetamide substituent is the best of the series. It has an IC50 = 0.36 nM for inhibition of ET-1 radioligand binding at the ETA(A) receptor, with a 1000-fold selectivity for the ET(A) vs the ET(B) receptor. It is also a potent inhibitor (IC50 = 0.16 nM) of phosphoinositol hydrolysis stimulated by ET-1, and it antagonized the ET-l-induced contraction of the rabbit aorta with a pA(2) = 9.20. The compound has 70% oral bioavailability in rats.