This paper describes the enantiorecognition of (ยฑ)nicotine and (ยฑ)nornicotine by high-performance liquid chromatography using two derivatized cellulose chiral stationary phases (CSPs) operated in the normal phase mode. It was found that different substituents linked to the cellulose backbone signifi
Enantiomer separation of fungicidal triazolyl alcohols by normal phase HPLC on polysaccharide-based chiral stationary phases
โ Scribed by Torsten Spitzer; Eiji Yashima; Yoshio Okamoto
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 150 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0899-0042
No coin nor oath required. For personal study only.
โฆ Synopsis
Three fungicidal triazolyl alcohols (triadimenol, hexaconazole, and cis/ trans-1-4-chlorophenyl-2-1H-1,2,4-triazol-1-yl-cycloheptanol) were completely separated into enantiomers by chiral HPLC using polysaccharide-based chiral stationary phases. A better separation was achieved on cellulose and amylose carbamate phases compared with a cellulose ester phase. Peak shapes were almost symmetrical except for two cases, where tailing of the first eluted enantiomer and unusual symmetric peak broadening were observed. The effect of eluents on enantioseparation was also investigated. Chirality 11:195-200, 1999.
๐ SIMILAR VOLUMES
The direct separation of โค-aminoester enantiomers by HPLC on synthetic chiral stationary phases based on aacidic derivative of trans 1,2-diaminocyclohexane as selector is described. The application of different columns containing the stationary phase with opposite configurations and in the racemic f
Several benzodiazepines were enantioresolved on a new carbohydrate chiral stationary phase based on maltooligosaccharides. The role of organic modifier, ionic strength, pH and temperature are examined and the results are discussed. In general, selectivity and retention were found to decrease with in
The enantiomeric separation of several racemic aryloxyaminopropan-2-01 derivatives related to propranolol on normal and reversed phase of cellulose tris (3,5-dimethylphenyl carbamate) chiral stationary phases known as Chiralcel OD and Chiralcel OD-R were studied. It was observed that the chiral sepa
HPLC chiral stationary phases based on ovoglycoprotein from chicken egg white (OGCHI), desialyl OGCHI (asialo OGCHI), and desialyldegalactosyl OGCHI (asialo-agalacto OGCHI) were prepared to investigate the effects of sialic acid and sialic acid-galactose groups of OGCHI on chiral discrimination of v