在合成受体内的非共价相互作用可以加强客体结合
Zaida Rodriguez-Docampo1, Sofia I Pascu, Stefan Kubik
1Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom.
Journal of the American Chemical Society
|August 24, 2006
概括
双cyclopeptide离子受体与硫酸盐和酸盐结合,具有微分子亲和力. 内受体疏水性相互作用显著提高水溶液中的结合稳定性.
科学领域:
- 超分子化学 超分子化学
- 主机和客人的化学反应
- 化学生物学 化学生物学
背景情况:
- 阳离子识别在生物过程和化学传感中至关重要.
- 循环是设计阴离子受体的多功能支架.
- 了解结合机制是开发高亲和感受体的关键.
研究的目的:
- 为了研究双cyclopeptide 阴离子受体的结合特性.
- 阐明受体内相互作用在阳离子复合体稳定性中的作用.
- 探索增强主机-客人亲密关系的策略.
主要方法:
- 用X射线结晶学测定阳离子复合物的结构.
- 微热度计用于分析热力学约束参数和溶剂效应.
- 用不同溶剂中的单体环酸进行比较研究.
主要成果:
- 双cyclopeptide受体在水中结合硫酸盐和化物,具有微分子亲和力.
- 晶体结构揭示了环之间结合的离子,通过疏水相互作用稳定.
- 微热量计表明,疏水性相互作用可以补偿溶解成本.
结论:
- 内受体非共价相互作用显著促进了阴离子复合体的稳定性.
- 通过内部相互作用来加强分子识别是对宿主-客人化学的有希望的策略.
- 这项工作为设计具有增强亲和力的先进离子受体提供了洞察力.
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