己唑醇 在
Candida antarctica lipase B immobilised on carboxylated single-walled carbon nanotubes encapsulated in organic polymer monolithic capillary columns (immobilized for 120 h) 作用下,
以
甲醇 、 水 为溶剂,
生成 hexaconazole 、 hexaconazole
参考文献:
名称:
Lipase as a Chiral Selector Immobilised on Carboxylated Single-Walled Carbon Nanotubes and Encapsulated in the Organic Polymer Monolithic Capillary for Nano-High Performance Liquid Chromatography Enantioseparation of Racemic Pharmaceuticals
Preparation and evaluation of a triazole‐bridged
<i>bis</i>
(β‐cyclodextrin)–bonded chiral stationary phase for HPLC
作者:Yazhou Shuang、Yuqin Liao、Hui Wang、Yuanxing Wang、Laisheng Li
DOI:10.1002/chir.23147
日期:2020.2
spectroscopy, massspectrometry, elemental analysis, and thermogravimetric analysis. The chiral performance of TBCDP was evaluated by using chiral pesticides and drugs as probes including triazoles, flavanones, dansyl amino acids and β‐blockers. Some effects of the composition in mobile phase and pH value on the enantioseparations were investigated in different modes. The nine triazoles, eight flavanones, and
Colistin Sulfate Chiral Stationary Phase for the Enantioselective Separation of Pharmaceuticals Using Organic Polymer Monolithic Capillary Chromatography
and antiarrhythmic drugs. Acceptable separation was achieved for many drugs using reversed phase chromatographic conditions with no separation achieved under normal phase conditions. Colistin sulfate appears to be useful addition to the available macrocyclic antibiotic chiralphases used in liquid chromatography.
Preparation of a novel bridged bis(β-cyclodextrin) chiral stationary phase by thiol–ene click chemistry for enhanced enantioseparation in HPLC
作者:Ning Zhang、Siyu Guo、Bolin Gong
DOI:10.1039/d1ra04697g
日期:——
resonance (1H NMR), solid state 13C nuclear magnetic resonance (13C NMR) spectra spectrum, scanning electron microscope, elemental analysis, massspectrometry, infrared spectrometry and thermogravimetric analysis. The performance of HTCDP in enantioseparation was systematically examined by separating 21 chiral compounds, including 8 flavanones, 8 triazole pesticides and 5 other common chiral drugs (benzoin
A New Chiral Residue Analysis Method for Triazole Fungicides in Water Using Dispersive Liquid-Liquid Microextraction (DLLME)
作者:Mai Luo、Donghui Liu、Zhiqiang Zhou、Peng Wang
DOI:10.1002/chir.22172
日期:2013.9
residue analysis of the enantiomers of four chiral fungicides including hexaconazole, triadimefon, tebuconazole, and penconazole in water samples was developed by dispersive liquid–liquid microextraction (DLLME) pretreatment followed by chiral high‐performance liquid chromatography (HPLC)‐DAD detection. The enantiomers were separated on a Chiralpak IC column by HPLC applying n‐hexane or petroleum ether as
通过分散液-液微萃取(DLLME)预处理,然后进行手性分离,开发了一种快速,简单,可靠且环境友好的方法,用于分析水样中四种手性杀菌剂(包括六康唑,三唑酮,戊唑醇和戊康唑)的对映体的残留量。高效液相色谱(HPLC)-DAD检测 将对映体通过HPLC施加在Chiralpak IC柱分离Ñ以己烷或石油醚为流动相,以乙醇或异丙醇为改性剂。研究了流动相组成和温度对分离度的影响,在最佳条件下,大多数对映体可在20分钟内完全分离。热力学参数表明分离是由焓驱动的。洗脱顺序通过圆二色性检测器(CD)和旋光色散检测器(ORD)进行检测。研究和优化了影响DLLME性能的水样中手性杀菌剂残留预处理参数,例如萃取和分散溶剂及其体积。在最佳微萃取条件下,富集因子超过121,线性度为30–1500 µg L -1相关系数(R 2)超过0.9988,加标水平分别为0.5、0.25和0.05 mg L -1(每种对映体)时,回收率在88
Enantioselective degradation of hexaconazole in rat hepatic microsomes in vitro
phase. The t1/2 of (−)‐hexaconazole and (+)‐hexaconazole were 23.70 and 13.95 min for rac‐ hexaconazole and 44.18 and 23.54 for enantiomers examined separately. Furthermore, hexaconazole is configurationally stable in rathepaticmicrosomes, demonstrating no chiral inversion from the (−)‐hexaconazole to (+)‐hexaconazole or vice versa. Intrinsic metabolic clearance of (+)‐hexaconazole is 1.12 times than