期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1467, 期 -, 页码 279-287出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2016.06.074
关键词
Thiol-ene click chemistry; Cationic cyclodextrin; Chiral stationary phase; High performance liquid chromatography
资金
- National Natural Science Foundation of China [21575100]
- Tianjin Research Program of Application Foundation and Advanced Technology [13JCQNJC05400]
The preparation and evaluation of four single thioether bridged cationic cyclodextrin (CD) chiral stationary phases (CSPs) with different spacer length, selector concentration and rim functionalities are reported. Mono-6-(1-vinyl/allyl/butenylimidazolium)-beta-CDs chloride were synthesized and clicked onto thiol silica to form three novel cationic native-CD-CSPs (CSP1, CSP2 and CSP3) and a post-synthetic phenylcarbamoylation of CSP2 was performed affording CSP4. The enantioseparation ability of the as prepared CSPs were evaluated in high performance liquid chromatography (HPLC) by separating over forty enantiomers including isoxazolines, dansyl amino acids, flavonoids, troger's base, 4-chromanol, bendroflumethiazide and styrene oxide. Most of the enantiomers were well resolved with the resolution (R-s) of 4NPh-OPr reaching 12.68. The effects of spacer length, selector concentration and rim functionalities on the enantioseparation were investigated. A comparison of the current CSP with a commercial column (Cyclobond I2000) was also conducted to reveal the superiors enantioselectivity of the as-prepared CSPs. (C) 2016 Elsevier B.V. All rights reserved.
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