提亚酸的形状和分子间相互作用分析:X射线粉末衍射和第一原理建模分析
Mattia Lopresti1, Luca Palin1,2, Marco Milanesio1
1Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale Teresa Michel 11, 15121 Alessandria, Italy.
Molecules (Basel, Switzerland)
|September 13, 2025
概括
胺酸 (TA),一种NSAID,表现出独特的晶体包装与交替的反体. 它的灵活结构表明动态行为,影响与生物目标的相互作用.
科学领域:
- 晶体学 晶体学是指结晶学.
- 分子建模分子建模
- 药理学 药理学是指药理学的学科.
背景情况:
- 提亚酸 (TA) 是一种非类固醇抗炎药物 (NSAID),与其他NSAID相比,在老鼠中诱发的发生率较低.
- 尽管它具有治疗用途,但一些不良影响需要更深入地了解TA与生物分子的相互作用.
- 获得X射线衍射研究的单晶,常见于NSAIDs,一直是TA的挑战.
研究的目的:
- 通过使用X射线粉末衍射,阐明 tiaprofenic 酸 (TA) 的晶体结构.
- 分析稳定TA晶体结构的分子相互作用.
- 通过计算建模来研究TA的结构灵活性和潜在的生物相互作用.
主要方法:
- 采用X射线粉末衍射来解决TA的晶体结构.
- 赫什菲尔德表面分析和能量框架分析用于研究分子间相互作用.
- 进行了第一原理建模和潜在能量扫描,以探索分子构造和能量障碍.
主要成果:
- TA在P21/c空间组中结晶,两个反体都存在于不对称单位中,表明一个复杂的晶体结构.
- 晶体包装具有通过键连接的交替反体,形成链和层,通过π堆叠相互作用稳定.
- 计算分析揭示了TA在低能量范围和温和的能量障碍内的多个稳定构造,表明了显著的分子灵活性.
结论:
- 通过粉末衍射解决的TA的独特晶体结构突出了其独特的包装安排.
- 已确定的分子间相互作用,包括结和π堆叠,是TA固态结构的关键.
- 计算结果表明,提亚酸表现出灵活和动态的行为,可能使生物基质与生物基质的各种相互作用 in vivo.
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