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Updated: Jun 20, 2025

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Constructing Cyclic Peptides Using an On-Tether Sulfonium Center
Published on: September 28, 2022
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由三级氨基催化托方合酶催化三级氨基激活的晚期基改性和宏环化
Yuyang Liu1,2,3, Guofeng Li3, Wen Ma2
1Research Unit of Peptide Science (2019RU066), Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College Beijing 100050 China.
Chemical science
|July 19, 2024
概括
这项研究引入了一种新的三级胺催化方法,用于在中修改酸盐 (Trp). 这种改为开发制药和生物结合策略提供了新的可能性.
科学领域:
- 有机化学 有机化学
- 药用化学 医学化学
- 类化学 类化学
背景情况:
- 的后期修改增强了用于制药应用的生物活性和物理化学特性.
- 托 (Trp) 具有独特的内环,对的功能至关重要,但其修改具有挑战性.
- 以前的Trp修饰方法主要依赖于过渡金属催化C-H激活.
研究的目的:
- 开发一种新,温和,高效的方法,用于酸中托残留物的后期修改.
- 探索三级胺催化在功能化中的实用性.
- 扩大工具箱,用于创建多样化的联体和循环.
主要方法:
- 一种三级胺催化了Trp和Morita-Baylis-Hillman (MBH) 碳酸盐的内醇环N1位置之间的SN2'-SN2'合反应.
- 反应在温和条件下进行,与固体相 (在树脂上) 和溶液相合成兼容.
- 对于含有Trp的和MBH碳酸盐,已证明具有广泛的基质范围.
主要成果:
- 通过开发的方法成功合成了一系列联体和循环.
- 该反应具有广泛的范围,可以容纳各种序列和MBH碳酸盐结构.
- 修改后的Trp残留物作为一种多功能柄,用于进一步与其他生物分子的生物结合.
结论:
- 开发了一种前所未有的三级胺催化酸中托的化.
- 该方法为改和生物结合提供了一种温和,高效和多用途的方法.
- 这一进步为类药物开发和创建复杂的基于的分子开辟了新的途径.
相关概念视频
Preparation of 1° Amines: Hofmann and Curtius Rearrangement Overview
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In the presence of an aqueous base and a halogen, primary amides can lose the carbonyl (as carbon dioxide) and undergo rearrangement to form primary amines. This reaction, called the Hofmann rearrangement, can produce primary amines (aryl and alkyl) in high yields without contamination by secondary and tertiary amines.
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Amines to Amides: Acylation of Amines
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Various carboxylic acid derivatives (such as acid chlorides, esters, and anhydrides) can be used for the acylation of amines to yield amides. The reaction requires two equivalents of amines. The first amine molecule functions as a nucleophile and attacks the carbonyl carbon to produce a tetrahedral intermediate. This is followed by the loss of the leaving group and restoration of the C=O bond.
Next, the second equivalent of amine serves as a Brønsted base and deprotonates the quaternary...
Next, the second equivalent of amine serves as a Brønsted base and deprotonates the quaternary...
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