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对聚合物多态转换的操纵机制的洞察:西米蒂丁的案例
Beiqian Tian1, Na Wang1,2, Jinyue Yang1
1National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
Pharmaceutical research
|July 2, 2024
概括
聚烯利 (PVP) 有效地稳定了甲型胺 (CIM),并通过降低核和晶体生长率来抑制多态转化. 较短的PVP链显示出更大的抑制作用.
科学领域:
- 制药科学 制药科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 聚合物添加剂对于操纵药品中的多态转换至关重要.
- 了解聚合物介导的多态控制的精确机制对于药物配方开发至关重要.
研究的目的:
- 阐明聚合物添加剂影响西米提丁 (CIM) 多态转换的机制.
- 为了研究不同聚合物的作用,特别是聚乙烯 (PVP) 和聚乙烯糖醇 (PEG),在CIM多态转化.
- 确定聚合物特性 (例如,链长,分子量) 与它们在控制多态性质方面的有效性之间的关系.
主要方法:
- 在乙尼特/水混合物中测量了赛美提丁 (CIM) 多态的可溶性.
- 拉曼光谱用于监测CIM形式A到B的多态转换.
- 核动力学实验和分子动力学模拟.
- 测量晶体生长速度和计算相互作用能量.
主要成果:
- 在测试条件下,CIM的B形式是热力学稳定的形式.
- 聚烯 (PVP),特别是较短的链长 (例如,K16-18),显著抑制了CIM的多态转化.
- 聚乙烯甘醇 (PEG) 对CIM多态转化的影响最小.
- 通过减少溶解物扩散和溶解物-溶解物相互作用,PVP降低了CIM核和晶体生长率.
- 较低分子量PVP显示更有效地抑制晶体生长.
结论:
- 聚烯罗利 (PVP) K16-18有效地稳定了甲型西米提丁 (CIM),并抑制了多态转化.
- 提出了CIM多态转换中的聚合物添加剂操纵机制,突出了PVP在控制核和生长动力学中的作用.
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