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A novel click lysine zwitterionic stationary phase for hydrophilic interaction liquid chromatography. 2012

Hongyue Guo, and Renhua Liu, and Jinjin Yang, and Bingcheng Yang, and Xinmiao Liang, and Changhu Chu
School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.

A novel type of zwitterionic HILIC stationary phase was prepared by covalently bonding the l-azido lysine on silica gel via click chemistry. The key intermediate azido lysine was synthesized by transformation the amino group in l-Boc-lysine to corresponding azido group and subsequent removal of the N-protected group (Boc). Finally, the azido lysine was covalently bonded to silica beads by click chemistry to get click lysine. Its structure was confirmed by FT-IR and elemental analysis. The new stationary phase showed good HILIC characteristics, when it was applied to separate polar and hydrophilic compounds, such as organic acids, cephalosporins and carbapenems. Compared with the commercial stationary phases, such as Atlantics HILIC and ZIC-HILIC, click lysine displayed better or similar chromatographic behaviors.

UI MeSH Term Description Entries
D008239 Lysine An essential amino acid. It is often added to animal feed. Enisyl,L-Lysine,Lysine Acetate,Lysine Hydrochloride,Acetate, Lysine,L Lysine
D002853 Chromatography, Liquid Chromatographic techniques in which the mobile phase is a liquid. Liquid Chromatography
D001386 Azides Organic or inorganic compounds that contain the -N3 group. Azide
D057927 Hydrophobic and Hydrophilic Interactions The thermodynamic interaction between a substance and WATER. Hydrophilic Interactions,Hydrophilic and Hydrophobic Interactions,Hydrophilicity,Hydrophobic Interactions,Hydrophobicity,Hydrophilic Interaction,Hydrophilicities,Hydrophobic Interaction,Hydrophobicities,Interaction, Hydrophilic,Interaction, Hydrophobic,Interactions, Hydrophilic,Interactions, Hydrophobic
D057930 Click Chemistry Organic chemistry methodology that mimics the modular nature of various biosynthetic processes. It uses highly reliable and selective reactions designed to "click" i.e., rapidly join small modular units together in high yield, without offensive byproducts. In combination with COMBINATORIAL CHEMISTRY TECHNIQUES, it is used for the synthesis of new compounds and combinatorial libraries. Click Chemical Reactions,Click Chemical Techniques,Chemical Reaction, Click,Chemical Reactions, Click,Chemical Technique, Click,Chemical Techniques, Click,Chemistries, Click,Chemistry, Click,Click Chemical Reaction,Click Chemical Technique,Click Chemistries,Reaction, Click Chemical,Reactions, Click Chemical,Technique, Click Chemical,Techniques, Click Chemical
D058428 Silica Gel A non-crystalline form of silicon oxide that has absorptive properties. It is commonly used as a desiccating agent and as a stationary phase for CHROMATOGRAPHY. The fully hydrated form of silica gel has distinct properties and is referred to as SILICIC ACID. Silochrome,Gel, Silica

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