methyl 2-(3,5-dichloro-6-methyl-2-oxopyrazin-1(2H)-yl)-2-phenylacetate | 1251932-92-9

• 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 2-(3,5-dichloro-6-methyl-2-oxopyrazin-1(2H)-yl)-2-phenylacetate
• 英文别名: 2-(3,5-dichloro-6-methyl-2-oxopyrazin-1(2H)-yl)-2-phenylacetic acid methyl ester；Methyl 2-(3,5-dichloro-2-methyl-6-oxopyrazin-1-yl)-2-phenylacetate
• CAS: 1251932-92-9
• 化学式: C₁₄H₁₂Cl₂N₂O₃
• 分子量: 327.167
• InChiKey: XHSQMDNMIXMRDF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.3
• 重原子数：
  21
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.21
• 拓扑面积：
  59
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  methyl 2-(3,5-dichloro-6-methyl-2-oxopyrazin-1(2H)-yl)-2-phenylacetate 在 水 、 palladium diacetate 、 potassium carbonate 、 caesium carbonate 、 N,N-二异丙基乙胺 、 4,5-双二苯基膦-9,9-二甲基氧杂蒽 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下， 以 乙二醇二甲醚 、 二氯甲烷 、 乙腈 为溶剂， 反应 0.66h， 生成 (3S)-3-(2-(3-(3-(tert-butyl)ureido)-5-chloro-6-methyl-2-oxopyrazin-1(2H)-yl)-2-phenylacetamido)-4-cyclobutyl-2-hydroxybutanamide
  参考文献：
  名称：

  Achiral Pyrazinone-Based Inhibitors of the Hepatitis C Virus NS3 Protease and Drug-Resistant Variants with Elongated Substituents Directed Toward the S2 Pocket

  摘要：

  Herein we describe the design, synthesis, inhibitory potency, and pharmacokinetic properties of a novel class of achiral peptidomimetic HCV NS3 protease inhibitors. The compounds are based on a dipeptidomimetic pyrazinone glycine P3P2 building block in combination with an aromatic acyl sulfonamide in the P1P1' position. Structure-activity relationship data and molecular modeling support occupancy of the S2 pocket from elongated R-6 substituents on the 2(1H)-pyrazinone core and several inhibitors with improved inhibitory potency down to K-i = 0.11 mu M were identified. A major goal with the design was to produce inhibitors structurally dissimilar to the di- and tripeptide-based HCV protease inhibitors in advanced stages of development for which cross-resistance might be an issue. Therefore, the retained and improved inhibitory potency against the drug-resistant variants A156T, D168V, and R155K further strengthen the potential of this class of inhibitors. A number of the inhibitors were tested in in vitro preclinical profiling assays to evaluate their apparent pharmacokinetic properties. The various R6 substituents were found to have a major influence on solubility, metabolic stability, and cell permeability.

  DOI：

  10.1021/jm301887f
• 作为产物：
  描述：

  草酰氯 、 Methyl 2-(1-cyanoethylamino)-2-phenylacetate 在 盐酸 作用下， 以 乙醚 、 乙二醇二甲醚 为溶剂， 反应 0.08h， 生成 methyl 2-(3,5-dichloro-6-methyl-2-oxopyrazin-1(2H)-yl)-2-phenylacetate
  参考文献：
  名称：

  Achiral Pyrazinone-Based Inhibitors of the Hepatitis C Virus NS3 Protease and Drug-Resistant Variants with Elongated Substituents Directed Toward the S2 Pocket

  摘要：

  Herein we describe the design, synthesis, inhibitory potency, and pharmacokinetic properties of a novel class of achiral peptidomimetic HCV NS3 protease inhibitors. The compounds are based on a dipeptidomimetic pyrazinone glycine P3P2 building block in combination with an aromatic acyl sulfonamide in the P1P1' position. Structure-activity relationship data and molecular modeling support occupancy of the S2 pocket from elongated R-6 substituents on the 2(1H)-pyrazinone core and several inhibitors with improved inhibitory potency down to K-i = 0.11 mu M were identified. A major goal with the design was to produce inhibitors structurally dissimilar to the di- and tripeptide-based HCV protease inhibitors in advanced stages of development for which cross-resistance might be an issue. Therefore, the retained and improved inhibitory potency against the drug-resistant variants A156T, D168V, and R155K further strengthen the potential of this class of inhibitors. A number of the inhibitors were tested in in vitro preclinical profiling assays to evaluate their apparent pharmacokinetic properties. The various R6 substituents were found to have a major influence on solubility, metabolic stability, and cell permeability.

  DOI：

  10.1021/jm301887f

文献信息

• A straightforward microwave method for rapid synthesis of N-1, C-6 functionalized 3,5-dichloro-2(1H)-pyrazinones
  作者：Johan Gising、Pernilla Örtqvist、Anja Sandström、Mats Larhed

  DOI：10.1039/b905501k

  日期：——

  A rapid and versatile one-pot, 2 × 10 min microwave protocol for the preparation of N-1 and C-6 decorated 3,5-dichloro-2(1H)-pyrazinones was developed. Comparable reaction sequences using classical conditions require about 1–2 days of heating. The α-aminonitrile was first generated in a Strecker reaction and thereafter cyclized under microwave heating. The microwave approach developed offers the possibility of efficiently generating and utilizing functionalized 3-amino-5-chloro-2(1H)-pyrazinone-N-1-carboxylic acids as β-strand inducing core structures in a medicinal chemistry context. To illustrate the usefulness of the method, the synthesis of two novel 2(1H)-pyrazinone-containing Hepatitis C virus NS3 protease inhibitors is reported.

  开发了一种快速且多功能的单锅法2×10分钟微波协议，用于制备N-1和C-6修饰的3,5-二氯-2(1H)-吡嗪酮。使用经典条件进行的可比反应序列需要大约1-2天的加热时间。首先通过斯特雷克反应生成α-氨基腈，然后在微波加热下环化。所开发的微波方法提供了高效生成和利用功能化的3-氨基-5-氯-2(1H)-吡嗪酮-N-1-羧酸作为药物化学背景下β-链诱导核心结构的可能性。为了说明该方法的实用性，报道了两个新型含有2(1H)-吡嗪酮的丙型肝炎病毒NS3蛋白酶抑制剂的合成。
• Discovery of achiral inhibitors of the hepatitis C virus NS3 protease based on 2(1H)-pyrazinones
  作者：Pernilla Örtqvist、Johan Gising、Angelica E. Ehrenberg、Aparna Vema、Anneli Borg、Anders Karlén、Mats Larhed、U. Helena Danielson、Anja Sandström

  DOI：10.1016/j.bmc.2010.06.101

  日期：2010.9

  Herein, the design, synthesis and inhibitory potency of a series of novel hepatitis C virus (HCV) NS3 protease inhibitors are presented. These inhibitors are based on a 2(1H)-pyrazinone P3 scaffold in combination with either a P2 phenylglycine or a glycine, and they were evaluated on the wild type as well as on two resistant variants of the enzyme, A156T and D168V. Molecular modelling suggested that the aromatic side-chain of the P2 phenylglycine occupies the same space as the substituent in position 6 on the pyrazinone core. The versatile synthetic route applied for the pyrazinone synthesis made a switch between the two positions easily feasible, resulting in phenyl-or benzyl substituted pyrazinones and leaving glycine as the P2 residue. Of several P1-P1' residues evaluated, an aromatic P1-P1' scaffold was found superior in combination with the new P3-P2 building block. As a result, an entirely new type of achiral and rigidified inhibitors was discovered, with the best of the novel inhibitors having fourfold improved potency compared to the corresponding tripeptide lead. We consider these achiral inhibitors highly suitable as starting points for further optimization. (C) 2010 Elsevier Ltd. All rights reserved.
• Achiral Pyrazinone-Based Inhibitors of the Hepatitis C Virus NS3 Protease and Drug-Resistant Variants with Elongated Substituents Directed Toward the S2 Pocket
  作者：Johan Gising、Anna Karin Belfrage、Hiba Alogheli、Angelica Ehrenberg、Eva Åkerblom、Richard Svensson、Per Artursson、Anders Karlén、U. Helena Danielson、Mats Larhed、Anja Sandström

  DOI：10.1021/jm301887f

  日期：2014.3.13

  Herein we describe the design, synthesis, inhibitory potency, and pharmacokinetic properties of a novel class of achiral peptidomimetic HCV NS3 protease inhibitors. The compounds are based on a dipeptidomimetic pyrazinone glycine P3P2 building block in combination with an aromatic acyl sulfonamide in the P1P1' position. Structure-activity relationship data and molecular modeling support occupancy of the S2 pocket from elongated R-6 substituents on the 2(1H)-pyrazinone core and several inhibitors with improved inhibitory potency down to K-i = 0.11 mu M were identified. A major goal with the design was to produce inhibitors structurally dissimilar to the di- and tripeptide-based HCV protease inhibitors in advanced stages of development for which cross-resistance might be an issue. Therefore, the retained and improved inhibitory potency against the drug-resistant variants A156T, D168V, and R155K further strengthen the potential of this class of inhibitors. A number of the inhibitors were tested in in vitro preclinical profiling assays to evaluate their apparent pharmacokinetic properties. The various R6 substituents were found to have a major influence on solubility, metabolic stability, and cell permeability.