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。
Amino lactam sulfonamides as inhibitors of A-beta protein production
申请人:——
公开号:US20030130251A1
公开(公告)日:2003-07-10
This invention relates to novel lactams having the Formula (I):
1
to their pharmaceutical compositions and to their methods of use. These novel compounds inhibit the processing of amyloid precursor protein and, more specifically, inhibit the production of A&bgr;-peptide, thereby acting to prevent the formation of neurological deposits of amyloid protein. More particularly, the present invention relates to the treatment of neurological disorders related to &bgr;-amyloid production such as Alzheimer's disease and Down's Syndrome.
Application of cyclodextrins (CDS) for remediation of perfluoroalkyl substances (PFASS)
申请人:O'Shea Kevin E.
公开号:US11149135B2
公开(公告)日:2021-10-19
A system for remediation of perfluoroalkyl substances (PFASs) has a multiplicity of β-cyclodextrins (β-CDs) and/or modified β-CDs combined with a vehicle additive, and a delivery device. Modified β-CDs can contain a single amine functionality at a single primary carbon or single secondary carbon of the β-CD. The vehicle additive can be powdered activated carbon (PAC). The delivery device is a column, a pouch, a packet, or a sheet that can permit the contacting of a fluid environment with the β-CDs and vehicle additive. The system of remediation can be used for a fluid environment or for biological organisms. CD-based fluorescent sensors can detect PFASs in the environment.