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고성능 액체 크로마토그래피에 의한 다당 유도체를 기초로 한 흡착되거나 공유결합된 키랄 고정상에서 키랄 아미노 알코올의 안트르알디민 유도체의 광학분리
서문준(Wen Jun Xu),김경옥(Jing Yu Jin),이원재(Wonjae Lee) 한국생물공학회 2011 KSBB Journal Vol.26 No.4
The convenient derivatization method of chiral amino alcohols as 9-anthraldimine Schiff base derivatives for chiral resolution was developed and the liquid chromatographic enantiomer separation of chiral amino alcohols as 9-anthraldimine derivatives was investigated on several coated and covalently bonded polysaccharide-derived chiral stationary phases (CSPs). In general, the performance of Chiralcel OD-H (or Chiralcel OD) (α = 1.24-2.89), the coated CSP derived from cellulose derivative was superior to the other CSPs for resolution of 9-anthraldimine derivatives of several amino alcohols. The results of enantioseparation depending on the structure of 9-anthraldimine analytes like the steric bulky group and the polar moiety etc were discussed. The analytical method was applied to measure the enantiomeric purity of commercially available chiral amino alcohols. It is expected that the convenient analytical method will be very efficient for determination of enantiomeric purity of amino alcohols as 9-anthraldimine Schiff base derivatives with strong UV absorption.
아미노산 에스테르의 벤조피논 이민 유도체의 액체 크로마토그래피의 광학분리
윤원남(Won Nam Yun),서문준(Wen Jun Xu),황호(Hu Huang),이원재(Wonjae Lee) 한국생물공학회 2012 KSBB Journal Vol.27 No.3
A convenient liquid chromatographic enantiomer separation of several α-amino acid esters as benzophenone Schiff base derivatives on covalently immobilized chiral stationary phases (CSPs) derived from polysaccharide derivatives was developed. The benzophenone imine derivatives of α-amino acid esters were readily prepared by stirring benzophenone imine and the α-amino acid ester hydrochloride salts in 2-propanol. The chromatographic conditions used on all CSPs were 0.5% or 5% 2-propanol/hexane (V/V) as the mobile phases at 1 mL/min of flow rate and UV 254 nm detection. The performance of Chiralpak IC among all CSPs was superior to that of the other CSPs for resolution of benzophenone imine derivatives of α-amino acid esters. It is expected that the developed analytical method will be useful for enantiomer resolution of other α-amino acid esters as benzophenone Schiff base derivatives.