Herein, we report the preparation of lipase immobilised on single-walled carbon nanotubes (SWCNTs) as an enantioselector for capillary monolithic columns and their application in the chiral separation of racemic pharmaceuticals. The columns were prepared through the encapsulation of functionalised SWCNTs (c-SWCNTs) within an organic monolithic polymer, followed by the immobilisation of lipase over the obtained monolith, over a three-day (L1) and five-day (L2) period. The prepared columns were tested for the enantioselective nano-HPLC separation of 50 racemic drugs. A suitable resolution was achieved for 25 drugs using nano-RP-HPLC conditions for both the L1 and L2 capillaries, while no specific resolution was detected under normal-phase HPLC conditions. The developed c-SWCNT-lipase-based polymeric monolithic capillaries are a promising expansion for separating pharmaceutical enantiomers’ using nano-HPLC.
在此,我们报告了固定在单壁碳纳米管(SWCNTs)上的脂肪酶作为毛细管整体柱对映体选择器的制备及其在手性分离外消旋药物中的应用。制备色谱柱的方法是将功能化的 SWCNTs(c-SWCNTs)封装在有机整体聚合物中,然后在获得的整体上固定脂肪酶,固定时间分别为三天(L1)和五天(L2)。对制备的色谱柱进行了对映体选择性纳米高效液相色谱分离 50 种外消旋药物的测试。在 L1 和 L2 两种毛细管的纳米RP-HPLC 条件下,对 25 种药物进行了适当的分辨,而在正相 HPLC 条件下未检测到特定的分辨。所开发的基于 c-SWCNT 脂肪酶的聚合物整体毛细管是利用纳米高效液相色谱分离药物对映体的一种很有前景的扩展方法。