Separation of Amino Acid Enantiomers by Gas Chromatogaphy on Phenylthiohydantoin Derivatives as Chiral Stationary Phases

아미노산 Phenylthiohydantoin 유도체를 키랄 고정상으로 한 GC에 의한 아미노산 광학 이성질체의 상호분리

The resolution of five amino acids derivatives by gas chromatography on phenylthiohydantoin derivatives as chiral stastionary phase was investigated. (S)-5-isopropyl, isobutyl, (sec)-butyl and benzoyl derivatives of $N^3-phenyl-2-thiohydantoin$ were synthesized from L-valine, L-leucine, L-isoleucine and L-phenylalanine, respectively. The phases were employed at several column temperatures ($140^{\circ}C{\sim}210^{\circ}C$). The separation factors were compared with each stationary phase with varying R groups. The possible mechanism of chiral recognition was investigated by NMR technique.