电气诱导的C-H/S-H交叉合用于功能化/宏循环化含氨酸的类蛋白
Fang Xiang1, Jia Deng2, Xiaotong Bu1
1Hubei Key Laboratory for Precision Synthesis of Small Molecule Pharmaceuticals & Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, P. R. China.
Nature communications
|October 31, 2025
概括
这项研究介绍了一种电感应波方法,用于高效的改和循环. 新的电化学方法为功能化氨酸残留提供了温和的条件和高选择性.
科学领域:
- 有机化学 有机化学
- 电化学 电化学 电化学
- 类化学 类化学
背景情况:
- 的功能化和宏循环化在药物发现和化学生物学中至关重要.
- 现有的方法通常需要恶劣的条件或复杂的试剂.
- 电化学方法为有机合成提供了一个可持续和可调节的替代方案.
研究的目的:
- 开发一种用于含有囊的的电诱导缩策略.
- 为了使的高效功能化和宏循环化.
- 探索电化学激活在化工中的实用性.
主要方法:
- 使用简单的素源和金属介导的素原子转移.
- 使用电化学在现场逆极性反转.
- 在简单和温和条件下研究反应.
主要成果:
- 实现了氨酸残留物的高效和化学选择性标记.
- 在功能化中表现出高的转化率.
- 成功应用了循环合成和宏循环化方法.
结论:
- 电诱导的缩方法为基修饰提供了一个强大的工具.
- 这种方法为合成循环提供了一种多功能和温和的策略.
- 电化学激活在化工和药物开发方面开辟了新的途径.
相关概念视频
01:16Cycloaddition 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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01:26Thermal and Photochemical Electrocyclic Reactions: Overview
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Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
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01:12Cycloaddition Reactions: MO Requirements for Photochemical Activation
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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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01:26Photochemical Electrocyclic Reactions: Stereochemistry
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The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
Selection Rules: Photochemical Activation
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01:17Thermal Electrocyclic Reactions: Stereochemistry
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The stereochemistry of electrocyclic reactions is strongly influenced by the orbital symmetry of the polyene HOMO. Under thermal conditions, the reaction proceeds via the ground-state HOMO.
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
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01:16Cycloaddition Reactions: MO Requirements for Thermal Activation
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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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