2-(3-{2-[2-oxo-4-(toluene-4-sulfonyl)piperazin-1-yl]acetylamino}propionylamino)propanamide | 1404617-17-9

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 肽模拟物
• 英文名称: 2-(3-{2-[2-oxo-4-(toluene-4-sulfonyl)piperazin-1-yl]acetylamino}propionylamino)propanamide
• 英文别名: (2S)-2-[3-[[2-[4-(4-methylphenyl)sulfonyl-2-oxopiperazin-1-yl]acetyl]amino]propanoylamino]propanamide
• CAS: 1404617-17-9
• 化学式: C₁₉H₂₇N₅O₆S
• 分子量: 453.519
• InChiKey: JQTIZIZLPNATLL-AWEZNQCLSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -1.3
• 重原子数：
  31
• 可旋转键数：
  9
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.47
• 拓扑面积：
  167
• 氢给体数：
  3
• 氢受体数：
  7

反应信息

• 作为产物：
  描述：

  在 三乙基硅烷 、 三氟乙酸 作用下， 以 二氯甲烷 为溶剂， 反应 1.0h， 以18.1 mg的产率得到2-(3-{2-[2-oxo-4-(toluene-4-sulfonyl)piperazin-1-yl]acetylamino}propionylamino)propanamide
  参考文献：
  名称：

  Regioselective Incorporation of Backbone Constraints Compatible with Traditional Solid-Phase Peptide Synthesis

  摘要：

  A protected aldehyde was attached via a two-carbon spacer to a peptide backbone amide nitrogen during a traditional Merrifield solid-phase synthesis. Acid-mediated unmasking of the aldehyde triggered the regioselective formation of cyclic N-acyliminiums between the aldehyde and the neighboring peptide amide nitrogen. In the absence of an internal nucleophile, the cyclic iminiums formed dihydropyrazinones, a six-membered peptide backbone constraint between two peptide amides. In the presence of an internal nucleophile, tetrahydropyrazinopyrimidinediones or tetrahydroimidazopyrazinediones were formed via tandem N-acyliminium ion cyclization-nucleophilic addition. The outcome of this nucleophilic addition was dependent on the substituent on the nitrogen nucleophile.

  DOI：

  10.1021/co300125m

文献信息

• Synthesis of Piperazinones, Piperazines, Tetrahydropyrazines, and Dihydropyrazinones from Polymer-Supported Acyclic Intermediates via N-Alkyl- and N-Acyl­iminiums
  作者：Barbora Vaňková、Lucie Brulíková、Boyuan Wu、Viktor Krchňák

  DOI：10.1002/ejoc.201200591

  日期：2012.9

  procedure from easily accessible polymer-supported acyclic precursors containing either a masked aldehyde or ketone group. Acid-mediated unmasking of the aldehyde triggered cyclic iminium formation followed by reduction with triethylsilane present in the cleavage cocktail. The effect of the substituent at the iminium-forming nitrogen was evaluated: whereas complete conversion to the target compounds was

  三取代的哌嗪酮、哌嗪、四氢吡嗪和二氢吡嗪酮通过一步法从含有掩蔽醛或酮基团的聚合物支撑的无环前体中制备。酸介导的醛的暴露引发了环状亚胺的形成，然后用裂解混合物中存在的三乙基硅烷进行还原。评估了亚胺形成氮上取代基的影响：虽然观察到 N-烷基、芳基和苯磺酰胺衍生物完全转化为目标化合物，但 N-酰基化合物的醛部分还原为醇. 类似地，酮容易为环状亚胺提供 N-烷基化合物，而它们与 N-酰基前体的环化则不情愿地进行。有趣的是，在三乙基硅烷的存在下，在 60 °C 下树脂结合的无环前体的裂解导致酰胺键分解并形成内酯。类似的合成路线也成功地用于制备哌嗪，并作为合成二氮杂卓的替代路线进行了测试。