2'-修改型蒂米丁与生物对角环或悉诺因作为无铜后合成功能化化学合成的寡核酸的构建块
Alexandra Bristiel1,2, Manon Cadinot2, Mathieu Pizzonero2
1Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), UMR 8182, 91405, Orsay, France.
Bioconjugate chemistry
|September 5, 2023
概括
研究人员开发了用于制造改性寡核酸 (ONs) 的新建构件. 这些新型单体使ONs的无痕后合成标记能够使用生物对等反应用于化学生物学和药物开发.
科学领域:
- 化学生物学 化学生物学
- 药用化学 医学化学
- 氧核酸合成的合成方法
背景情况:
- 将探针和配体结合到寡核酸 (ON) 对于化学生物学和药物开发至关重要.
- 现有的方法往往涉及将生物对等组引入胺基构建块上,用于ON合成.
- 基因,循环催化素,转环催化素和诺伯是已知的自动化固体相化学的兼容构件.
研究的目的:
- 开发具有生物对等部分的新型2'-功能化核酸胺单体.
- 将甲基cyclopropene或sydnone部分引入寡核酸固相合成中.
- 为了使合成的寡核酸的无痕后合成修饰成为可能.
主要方法:
- 合成含有甲基cyclopropene或sydnone的新型2'-功能化核酸胺单体.
- 通过固相合成将这些单体纳入寡核酸链.
- 使用逆电子需求的迪尔斯-阿尔德 (iEDDA) 和应变促进的悉诺-环添加 (SPSAC) 反应,对寡核酸的合成后修饰.
主要成果:
- 成功合成并与甲基cyclopropene和sydnone组合结合了新的phosphoramidite单体.
- 使用iEDDA和SPSAC反应证明了对寡核酸的无痕后合成标记.
- 扩展了生物对角构建块的工具包,用于寡核酸修饰.
结论:
- 开发的单体为寡核酸功能化提供了新的,高效的生物对角柄.
- 这些进步促进了针对各种应用的精确标记的寡核酸的生成.
- 这项研究扩大了用于先进的寡核酸合成和标签的可用酸胺基构件的范围.
相关概念视频
Cycloaddition Reactions: Overview
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Cycloadditions are one of the most valuable and effective synthesis routes to form cyclic compounds. These are concerted pericyclic reactions between two unsaturated compounds resulting in a cyclic product with two new σ bonds formed at the expense of π bonds. The [4 + 2] cycloaddition, known as the Diels–Alder reaction, is the most common. The other example is a [2 + 2] cycloaddition.
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Thermal cycloadditions are reactions where the source of activation energy needed to initiate the reaction is provided in the form of heat. A typical example of a thermally-allowed cycloaddition is the Diels–Alder reaction, which is a [4 + 2] cycloaddition. In contrast, a [2 + 2] cycloaddition is thermally forbidden.
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Some cycloaddition reactions are activated by heat, while others are initiated by light. For example, a [2 + 2] cycloaddition between two ethylene molecules occurs only in the presence of light. It is photochemically allowed but thermally forbidden.
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