Chiral ion-exchange capillary electrochromatography of arylglycine amides with dextran sulfate as a pseudostationary phase
文献类型：期刊论文
| 作者 | Chen, Y; Lu, XN; Han, ZQ; Qi, L; Wang, MX; Yu, X; Yang, GL; Mao, LQ; Ma, HM |
| 刊名 | ELECTROPHORESIS
 |
| 出版日期 | 2005-02-01 |
| 卷号 | 26期号:4-5页码:833-840 |
| 关键词 | Arylglycine Amides Capillary Electrochromatography Chiral Separation Dextran Sulfate Ion Exchange |
| ISSN号 | 0173-0835 |
| DOI | 10.1002/elps.200410317 |
| 英文摘要 | A low-cost tunable chiral ion-exchange capillary electrochromatographic method has been developed for the separation of arylglycine amide racemic mixtures with dextran sulfate (DS) as an anionic and chiral pseuclostationary phase and Tris-tartrate as a buffer system. The concentrations of DS and Tris had opposite influences on retention and resolution and could serve as ideal factors to finely tune the running speed and chiral resolution. Tartrate and pH largely impact the separation but pH should be confined within 3.0-5.5, only suitable for coarse tuning, while tartrate was preserved as the key buffering reagent, normally maintained at 40 mmol/L. With a working system 20-60 mmol/L Tris, and 40 mmol/L tartrate at pH 3.50composed of 0.1-1.0% IDS, 4.50, the enantioresolution of arylglycine amides was shown to be dependent on their chemical structure: The chiral resolution increased when the hydrogen at the alpha-amino group or at the p-position of phenyl ring was replaced by other larger group(s) but the resolution decreased when the group at the o- or m-site on the phenyl ring was enlarged. Further, the electronegative substitute of -Cl had larger resolution increment than methyl or methoxy at the position p- of phenyl ring but much lower increment at position m-. It is possible to well explain the resolution variation phenomenon by considering the group resistance and the variation of hydrogen-bonds formed inside the amino amides and between the solutes and DS. The amido group was shown irreplaceable to have chiral resolution with DS alone as an ionic and chiral pseudostationary phase. |
| 语种 | 英语 |
| WOS记录号 | WOS:000227425400012 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/56923]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Chen, Y |
| 作者单位 | Chinese Acad Sci, Inst Chem, Dept Chem Biol, Lab Analyt Chem Life Sci, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Y,Lu, XN,Han, ZQ,et al. Chiral ion-exchange capillary electrochromatography of arylglycine amides with dextran sulfate as a pseudostationary phase[J]. ELECTROPHORESIS,2005,26(4-5):833-840. |
| APA | Chen, Y.,Lu, XN.,Han, ZQ.,Qi, L.,Wang, MX.,...&Ma, HM.(2005).Chiral ion-exchange capillary electrochromatography of arylglycine amides with dextran sulfate as a pseudostationary phase.ELECTROPHORESIS,26(4-5),833-840. |
| MLA | Chen, Y,et al."Chiral ion-exchange capillary electrochromatography of arylglycine amides with dextran sulfate as a pseudostationary phase".ELECTROPHORESIS 26.4-5(2005):833-840. |
入库方式： OAI收割
来源：化学研究所
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