Enantioselective potential of polysaccharide-based chiral stationary phases in supercritical fluid chromatography
作者:Gabriela Kucerova、Kveta Kalikova、Eva Tesarova
DOI:10.1002/chir.22701
日期:2017.6
cellulose‐based chiralstationaryphase were achieved particularly with propane‐2‐ol and a mixture of isopropylamine and trifluoroacetic acid as organic modifier and additive to CO2, respectively. Methanol and basic additive isopropylamine were preferred on amylose‐based chiralstationaryphase. The complementary enantioselectivity of the cellulose‐ and amylose‐based chiralstationaryphases allows separation
Chiral Separation of Cathinone and Amphetamine Derivatives by HPLC/UV Using Sulfated ß-Cyclodextrin as Chiral Mobile Phase Additive
作者:Magdalena Taschwer、Yvonne Seidl、Stefan Mohr、Martin G. Schmid
DOI:10.1002/chir.22341
日期:2014.8
this research work was to develop an inexpensive method for the chiral separation of cathinones and amphetamines. This should help to discover if the substances are sold as racemic mixtures and give further information about their quality as well as their origin. Chiral separation of a set of 6amphetamine and 25 cathinone derivatives, mainly purchased from various Internet shops, is presented. A LiChrospher
在过去的几年中,新的合法和非法高价的确定已成为警察和检察机关的巨大挑战。在分析方面,只有几种分析方法可用于识别这些新物质。而且,许多这些休闲药物是手性的,并且认为对映异构体的药理效力不同。由于非对映选择性合成更容易,更便宜,因此它们主要以外消旋混合物的形式出售。这项研究工作的目的是开发一种廉价的方法,用于手性分离卡西酮和苯丙胺。这应该有助于发现这些物质是否以外消旋混合物的形式出售,并提供有关其质量及其来源的更多信息。一组6种苯丙胺和25种卡西酮衍生物的手性分离,介绍了主要从各种互联网商店购买的产品。固定相使用250 x 4 mm,5 µm的LiChrospher 100 RP-18e。手性流动相由甲醇,水和硫酸化的β-环糊精组成。使用UV检测在反相模式下在等度条件下进行测量。使用两种物质类别的四种模型化合物来优化流动相。在最终条件下(甲醇:水2.5:97.5 + 2%硫酸化的β-环糊精),
Enantiomeric separation of Novel Psychoactive Substances by capillary electrophoresis using (+)-18-crown-6-tetracarboxylic acid as chiral selector
作者:Johannes S. Hägele、Martin G. Schmid
DOI:10.1002/chir.22981
日期:2018.8
of the enantiomers of these chiral NPS may differ can be assumed from a broad spectrum of active pharmaceutical ingredients. For this reason, analytical method development regarding enantiomeric separation for these classes of substances is of great pharmaceutical and medical interest. The aim of this work was to create an easy‐to‐prepare chiralcapillaryelectrophoresis method for the enantioseparation
Invented are novel heterocyclic carboxamide compounds, the use of such compounds as inhibitors of protein kinase B activity and in the treatment of cancer and arthritis.
Invented are novel heterocyclic carboxamide compounds, the use of such compounds as inhibitors of protein kinase B activity and in the treatment of cancer and arthritis.