Chiral interactions of the fluoroether anesthetics desflurane, isoflurane, enflurane, and analogues with modified cyclodextrins studied by capillary gas chromatography and nuclear magnetic resonance spectroscopy: A simple method for column-suitability screening
作者:Keith Ramig、Ashok Krishnaswami、Leonid A. Rozov
DOI:10.1016/0040-4020(95)00860-b
日期:1996.1
phases, Cyclodex® G-TA, is found to be a chiral shift reagent for several of the fluoroethers. A rough correspondence is found relating the enantiomeric separation factor of a fluoroether and the chemical shift differences between its 1H and 19F nuclei in the NMR spectrum. Based on this data, it is proposed that a simple NMR experiment can screen chiral stationary phases prior to a desired gas chromatographic
通过毛细管气相色谱法在衍生自四个环糊精的固定相上合成和研究了18种手性氟醚麻醉剂地氟醚,异氟烷和恩氟烷的手性类似物。对映体的可分离性和洗脱顺序的趋势与结构和绝对构型有关。特别是,使用Lipodex®E固定相发现了商用麻醉品地氟醚的分离系数非常大,这表明可以进行制备对映体分离。发现其中一种固定相Cyclodex®G-TA是几种氟代醚的手性转移试剂。发现与氟醚的对映异构体分离因子及其1 H和19之间的化学位移差异有关的粗略对应关系NMR光谱中的F核。基于此数据,建议在给定的手性化合物进行所需的气相色谱对映异构体分离之前,简单的NMR实验可以筛选手性固定相。