Synthesis of the CSP based on cellulose with crown ether group for capillary chromatography

来源 :DaLian Internationall Symposia and Exhibition on Chromatogra | 被引量 : 0次 | 上传用户:Kinee
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  Polysaccharides are the most abundant optically active polymers on the earth and can be easily modified to carbamate group through the reaction with isocyanate group.The carbamate group-modified polysaccharide can be used the CSP for enantioseparation of chiral compounds.In this study, we firstly prepared the CSP based on cellulose with crown ether group by reaction of cellulose and 4-isocyanatebenzo-15-crown-5, which is prepared by reaction of 4-aminobenzo-15-crown-5 and phosgene.The obtained CSP with crown ether group was characterized by FT-IR, 13C-NMR and element analysis.In order to compare enantioseparation efficiency of the CSP with crown ether group and that of commercial CHIRALCEL OD with phenyl group, cellulose tris(3,5-dimethylphenyl carbamate) was also prepared according to Okamoto method.The enantioseparation of chiral compounds including chiral drugs and amino acid is in progress.
其他文献
Proteomics is a promising subject to discover potential biomarkers that could be used in the diagnosis and better understanding of human diseases.One of challenges in proteome study is the detection o
Large scale characterization of phosphoproteins requires highly specific methods for purification of phosphopeptides because of the low abundance of phosphoproteins and substoiehiometry of phosphoryla
Pyrolysis-gas chromatography (Py-GC) and liquid chromatography (LC) are widely used for the characterization of (co)polymers.The combination of organic SEC and Py-GC, either in the off-line mode or on
Present research describes a new sample preparation method termed directly suspended droplet liquid-liquid-liquid phase microextraction for determining residues of the analgesic drug diclofenac (2-[2-
1,4,6-androstatriene-3,17-dione (ATD) is best aromatase inhibitor and increase bioavailable testosterone significantly higher (over 400%) than any other testosterone booster advertised as highly stren
会议
The serum and plasma proteome are desirable biological samples due to their accessibility and representative complexity.There is great hope that the investigation of these samples will lead to the dis
会议
Research works related to the saccharide-sensing materials have been given importance because of its crucial role in the metabolic pathway of living organismsAffmity chromatography of sugars, nucleoti
Until recently, the use of small particles (i.e.less than 3μm in diameter) was not practical because of the pressure limitations of commercially available HPLC pumps.With multiple ultra high pressure
Bacterial cell-to-cell communication, also called quorum sensing or autoinduction, is mediated by small molecules (autoinducers) amongst which the most frequently studied group is the N-acylhomoserine
Much attention has been recently paid to the newest developed ultra high performance liquid chromatography (UPLC) technique which is based on the principle of small porous particles and ultra high pre