固态振动循环二元化用于制药应用:索福斯布维尔的多态和共晶
Adam Sklenář1, Lucie Růžičková2, Věra Schrenková3
1Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám.2, Prague 166 10, Czech Republic; University of Chemistry and Technology, Prague, Technická 5, Prague 166 28, Czech Republic.
振动循环二元化 (VCD) 光谱为识别晶体结构提供了对X射线衍射的经济有效和高效的替代方案. 这项研究优化了用于制药应用的VCD方法,证明了其区分多态和共晶的能力.
科学领域:
- 固态化学 固态化学
- 频谱学是一种光谱学.
- 晶体学 晶体学是指结晶学.
背景情况:
- 射线衍射 (XRD) 是制药中的晶体结构确定标准,但成本昂贵且耗时.
- 振动循环二元化 (VCD) 光谱提供了一种灵敏,具有成本效益的替代方案,能够检测微妙的结构变化.
研究的目的:
- 为固态VCD光谱学建立一个最佳和高效的方法.
- 为了证明VCD在区分多态和共晶体方面的能力.
- 为了验证VCD用于制药水晶结构分析.
主要方法:
- 严格评估使用氨酸作为模型化合物的实验条件.
- 用各种化合物 (氨基酸,氧酸,单糖) 验证优化的VCD方法.
- 应用VCD来识别抗病毒药物索福斯布维尔的多态和共晶.
- 调整集群和转移方法,用于计算周期性晶体环境中的光谱特性.
主要成果:
- 开发了一种优化的VCD协议,产生可靠,可复制,无工件的频谱,信号与噪声比高.
- VCD成功地分化了各种晶体形式,包括sophisbuvir的多态和共晶体.
- 计算方法 (集群和转移方法) 有助于解释光谱差异,特别是对于复杂的分子,如sofosbuvir.
结论:
- 固态VCD是一种快速,具有成本效益和用户友好的技术,用于识别制药水晶结构.
- 优化的VCD方法显示出在制药行业常规应用的巨大潜力.
- 计算光谱分析增强了对固态材料的VCD数据的解释.
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