dansyl-D,L-Leu 在
6A-(3-vinylimidazolium)-6-deoxy-β-cyclodextrin immobilized on 3-methacryloxypropyltrimethoxysilane modified Fe3O4 magnetic microspheres 作用下,
生成 丹磺酰-L-亮氨酸 、 dansyl-D-leucine
参考文献:
名称:
阳离子β-环糊精修饰的杂化磁性微球作为手性选择剂,用于手性吸收丹磺酰基氨基酸
摘要:
手性选择性官能化的磁性微球在对映体分离中显示出巨大的潜力。在这项研究中,通过自由基聚合将乙烯基咪唑鎓-β-环糊精氯化物(VIMCD-Cl)固定在3-甲基丙烯酰氧基丙基三甲氧基硅烷改性的氧化铁磁性微球上,开发了一类新型的手性磁性选择剂。制备的手性材料具有规则的三维核-壳结构,平均粒径约为580 nm,高磁化饱和度约为51 emu g -1。傅立叶变换红外光谱(FT-IR),热重分析(TGA)和元素分析证实了VIMCD-Cl在磁性微球表面成功聚合。然后将所制备的功能性磁性材料应用微分批技术应用于三种丹磺酰基氨基酸的选择性手性吸收。结果表明,固定的VIMCD-Cl磁性微球(VIMCD-MNPs)对三个丹磺酰基氨基酸具有良好的对映选择性,并且在手性吸附过程中表现出与L-对映体更强的相互作用。此外,这些官能化的手性磁性材料具有优异的可回收性,并且可用作手性分离的有效手性磁性选择剂。
Direct Resolution of Optically Active Isomers on Chiral Packings Containing Ergoline Skeletons. 5. Enantioseparation of Amino Acid Derivatives
作者:A. Messina、A. M. Girelli、M. Flieger、M. Sinibaldi、P. Sedmera、L. Cvak
DOI:10.1021/ac950698c
日期:1996.4.1
alkaloid-based chiral stationary phase preparation is described. Synthesis is based on bonding the allyl derivative of terguride to mercaptopropylsilanized silica gel. The packing exhibits higher content of chiral selector, stability, reproducibility, and enantioselectivity toward amino acids compared to that previously studied. The chromatographic behavior of amino acids with different side chains and substituent
Cationic β-cyclodextrin-modified hybrid magnetic microspheres as chiral selectors for selective chiral absorption of dansyl amino acids
作者:Jingwei Wu、Ping Su、Danhua Guo、Jun Huang、Yi Yang
DOI:10.1039/c4nj00030g
日期:——
Chirally selective functionalized magnetic microspheres show great potential in enantiomeric separations. In this study, a novel class of chiral magnetic selectors was developed by immobilization of vinylimidazolium-β-cyclodextrin chloride (VIMCD-Cl) on 3-methacryloxypropyltrimethoxysilane-modified iron oxide magnetic microspheres through a radical polymerization. The prepared chiral materials have
手性选择性官能化的磁性微球在对映体分离中显示出巨大的潜力。在这项研究中,通过自由基聚合将乙烯基咪唑鎓-β-环糊精氯化物(VIMCD-Cl)固定在3-甲基丙烯酰氧基丙基三甲氧基硅烷改性的氧化铁磁性微球上,开发了一类新型的手性磁性选择剂。制备的手性材料具有规则的三维核-壳结构,平均粒径约为580 nm,高磁化饱和度约为51 emu g -1。傅立叶变换红外光谱(FT-IR),热重分析(TGA)和元素分析证实了VIMCD-Cl在磁性微球表面成功聚合。然后将所制备的功能性磁性材料应用微分批技术应用于三种丹磺酰基氨基酸的选择性手性吸收。结果表明,固定的VIMCD-Cl磁性微球(VIMCD-MNPs)对三个丹磺酰基氨基酸具有良好的对映选择性,并且在手性吸附过程中表现出与L-对映体更强的相互作用。此外,这些官能化的手性磁性材料具有优异的可回收性,并且可用作手性分离的有效手性磁性选择剂。
[EN] COMPOUNDS USEFUL AS REVERSIBLE INHIBITORS OF CATHEPSIN S<br/>[FR] COMPOSES UTILES EN TANT QU'INHIBITEURS REVERSIBLES DE LA CATHEPSINE S
申请人:BOEHRINGER INGELHEIM PHARMA
公开号:WO2000051998A1
公开(公告)日:2000-09-08
Disclosed are novel cathepsin S reversible inhibitory compounds of formulas (I),(Ia) and (II),(IIa) as defined herein. The compou nds are useful for treating autoimmune diseases. Also disclosed are processes for making such novel compounds.
Compounds useful as reversible inhibitors of cathepsin S
申请人:——
公开号:US20020091259A1
公开(公告)日:2002-07-11
Disclosed are cathepsin S reversible inhibitory compounds of the formulas (I),(Ia) and (II),(IIa) as defined herein. The compounds are useful for treating autoimmune diseases. Also disclosed are processes for making such novel compounds.
1
A microflow cell comprising an outer cylinder disposed on the outer periphery of a cylindrical flow cell and having a flat surface on at least a light-entering surface, and a filling material inserted between the outer cylinder and the flow cell and a capillary electrophoresis method using such a microflow cell.
Since the outer cylinder is provided on the outer periphery of the cylindrical flow cell and the gap between the flow cell and the outer cylinder is filled up with a filling liquid, the quantity of scattered light is reduced, thereby enabling the adoption of fluorometry in the analysis of capillary electrophoresis.