Enantiomeric resolution, thermodynamic parameters, and modeling of clausenamidone and neoclausenamidone on polysaccharide‐based chiral stationary phases
作者:Xuna Luo、Chengqiao Fang、Junru Mi、Jingzi Xu、Hansen Lin
DOI:10.1002/chir.23068
日期:2019.6
In addition, the thermodynamics study showed that the result of the mechanism of chiral separation was enthalpically controlled at a temperature ranging from 288.15 to 308.15 K. Furthermore, docking modeling showed that the hydrogen bonds and π‐π interactions were the major forces for chiral separation. The present chiral HPLC method will be used for the enantiomeric resolution of the clausenamidone
本文的目的是描述一种新的合成路线,以获得合成的旋光性克萘啶酮和新clausenamidone,然后使用高效液相色谱法(HPLC)确定这些异构体的光学纯度。在此过程中,我们研究了不同的色谱条件,从而提供了最佳的分离方法。同时,还进行了热力学研究和分子模拟,以验证实验结果。还对分离机理进行了简要探讨。比较了两个手性固定相(CSP)和单独的对映体。以正己烷和异丙醇(IPA)(80/20 v / v)为流动相,以有机模式进行洗脱;合成R-萘啶酮的对映体过量(ee)值和S- clausenamidone和R-新clausenamidone和S-新clausenamidone高于99.9%,这些异构体的对映体比率(er)值为100:0。获得的对映选择性和分离度(分别为α和Rs)值分别为1.03至1.99和1.54至17.51。检测限和定量限分别为3.6至12.0 ug / mL和12.0至40.0 ug