Structural and computational insights into the enhanced solubility of dipfluzine by complexation: salt and salt-cocrystal
作者:Wei Guo、Shuang Du、Yulong Lin、Bo Lu、Caiqin Yang、Jing Wang、Yanli Zeng
DOI:10.1039/c8nj01576g
日期:——
connectivity. Solubility determinations suggest that complexation was able to increase the solubility of DF in various media. Furthermore, the lattice energy calculations were carried out on pure DF, complexed salts and salt-cocrystal using the CRYSTAL14 software at the DFT (B3LYP) level based on the single crystal structures. The correlation of supramolecular structures, lattice energies and solubilities are
Dipfluzine(DF)是一种二苯哌嗪钙通道阻滞剂,具有较差的溶解性。在目前的工作中,共晶/盐筛选实验产生了DF的两种盐和一种盐-共晶与羧酸共形成物,即富马酸(H 2FA),2-羟基苯甲酸(2-HBA)和4-羟基苯甲酸(4-HBA)。由于DF易与酸共结晶,因此本工作着重于溶解来自各种结构和能量的合成分子加合物。所有新的晶体产品均具有单晶X射线衍射(SCXRD),粉末X射线衍射(PXRD),差示扫描量热法(DSC),热重分析(TGA)和傅里叶变换红外光谱(FT-IR)的特征。结构分析表明,DF呈现出均匀的单质子化并与助成型剂形成了电荷辅助的氢键,且助成型剂的氢键键合决定了固体加合物的超分子结构。即,含有H 2的配合物倾向于形成分子间氢键的FA和4-HBA延伸至高维1-D链和2-D中螺线层,而2-HBA引入的盐由于其常见的分子内连接性而显示出离散的结构。溶解度测定表明络合能够增加DF在各种