ethyl 5-(p-tolyl)oxazole-2-carboxylate | 33115-91-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: ethyl 5-(p-tolyl)oxazole-2-carboxylate
• 英文别名: 5-p-tolyl-oxazole-2-carboxylic acid ethyl ester；Ethyl 5-(p-tolyl)oxazole-2-carboxylate；ethyl 5-(4-methylphenyl)-1,3-oxazole-2-carboxylate
• CAS: 33115-91-2
• 化学式: C₁₃H₁₃NO₃
• 分子量: 231.251
• InChiKey: OJLJKYHRVMEKFI-UHFFFAOYSA-N

物化性质

• 沸点：
  356.3±40.0 °C(Predicted)
• 密度：
  1.148±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  17
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.23
• 拓扑面积：
  52.3
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  ethyl 5-(p-tolyl)oxazole-2-carboxylate 在 氯磺酸 、 ammonium hydroxide 、 氯化亚砜 作用下， 以 1,4-二氧六环 、 氯仿 、 乙酸乙酯 为溶剂， 反应 4.0h， 生成 2-methyl-5-[2-(morpholin-4-ylcarbonyl)-1,3-oxazol-5-yl]benzenesulfonamide
  参考文献：
  名称：

  Probing the ‘bipolar’ nature of the carbonic anhydrase active site: Aromatic sulfonamides containing 1,3-oxazol-5-yl moiety as picomolar inhibitors of cytosolic CA I and CA II isoforms

  摘要：

  A series of potent inhibitors of human carbonic anhydrase (CA) isoforms I and II has been prepared via a direct, chemoselective sulfochlorination of a range of 1,3-oxazolyl benzenes and thiophenes, followed by primary sulfonamide synthesis. The latter functionality is a known zinc-binding group (ZBG) responsible for anchoring the inhibitors to the CA's zinc metal ion. The compound's periphery as well as the overall scaffold geometry was designed to enable optimal interactions with the two distinct sides of the enzyme's active site, one of which is lined with hydrophobic residues and while the other is predominantly hydrophilic. As a result, several compounds inhibiting the therapeutically important cytosolic CA I and CA II in picomolar range have been identified. These compounds are one of the most potent CA inhibitors identified to-date. Not only the remarkable (>10 000-fold), cytosolic CA I and CA II selectivity vs. the membrane-bound CA IX and CA XII isoforms, but also the pronounced CA II/I selectivity observed in some cases, allow considering this series as a set of isoform-selective chemical biology tools and promising starting points for drug candidate development. (C) 2015 Elsevier Masson SAS. All rights reserved.

  DOI：

  10.1016/j.ejmech.2015.06.022
• 作为产物：
  描述：

  2-氨基-4’-甲基苯乙酮 在 吡啶 、 硫酸 作用下， 反应 2.5h， 生成 ethyl 5-(p-tolyl)oxazole-2-carboxylate
  参考文献：
  名称：

  Probing the ‘bipolar’ nature of the carbonic anhydrase active site: Aromatic sulfonamides containing 1,3-oxazol-5-yl moiety as picomolar inhibitors of cytosolic CA I and CA II isoforms

  摘要：

  A series of potent inhibitors of human carbonic anhydrase (CA) isoforms I and II has been prepared via a direct, chemoselective sulfochlorination of a range of 1,3-oxazolyl benzenes and thiophenes, followed by primary sulfonamide synthesis. The latter functionality is a known zinc-binding group (ZBG) responsible for anchoring the inhibitors to the CA's zinc metal ion. The compound's periphery as well as the overall scaffold geometry was designed to enable optimal interactions with the two distinct sides of the enzyme's active site, one of which is lined with hydrophobic residues and while the other is predominantly hydrophilic. As a result, several compounds inhibiting the therapeutically important cytosolic CA I and CA II in picomolar range have been identified. These compounds are one of the most potent CA inhibitors identified to-date. Not only the remarkable (>10 000-fold), cytosolic CA I and CA II selectivity vs. the membrane-bound CA IX and CA XII isoforms, but also the pronounced CA II/I selectivity observed in some cases, allow considering this series as a set of isoform-selective chemical biology tools and promising starting points for drug candidate development. (C) 2015 Elsevier Masson SAS. All rights reserved.

  DOI：

  10.1016/j.ejmech.2015.06.022

文献信息

• I₂-Promoted formal [3+2] cycloaddition of α-methylenyl isocyanides with methyl ketones: a route to 2,5-disubstituted oxazoles
  作者：Xia Wu、Xiao Geng、Peng Zhao、Jingjing Zhang、Yan-dong Wu、An-xin Wu

  DOI：10.1039/c6cc10275a

  日期：——

  An I2-promoted formal [3+2] cycloaddition for access to oxazoles has been demonstrated. This is the first example of a Lewis acid-promoted formal [3+2] cycloaddition of isocyanides with methyl ketones involves...

  已经证明了I2促进的正式[3 + 2]环加成反应可与恶唑接触。这是路易斯酸促进的异氰酸酯与甲基酮的正式[3 + 2]环加成反应的第一个例子，涉及...
• Silver‐Induced [3+2] Cycloaddition of Isocyanides with Acyl Chlorides: Regioselective Synthesis of 2,5‐Disubstituted Oxazoles
  作者：Jian‐Quan Liu、Xuanyu Shen、Andrey Shatskiy、Enlong Zhou、Markus D. Kärkäs、Xiang‐Shan Wang

  DOI：10.1002/cctc.201900965

  日期：2019.9.5

  A silver‐induced cycloaddition of isocyanides with acyl chlorides has been developed. This transition metal‐catalyzed strategy provides an effective and scalable approach for the formation of 2,5‐disubstituted oxazoles in good to high yields. The employed silver‐based MOF catalyst can be efficiently recycled without compromising the yield.

  已经开发出银诱导的异氰酸酯与酰氯的环加成反应。这种过渡金属催化的策略为形成2,5-二取代的恶唑提供了一种有效且可扩展的方法，使产率高至高。所用的基于银的MOF催化剂可以有效地回收利用，而不会影响产量。