A series of sulfated alkyl oligosaccharides, including a sulfate dodecyl laminarapentaoside and a sulfated octadecyl maltohexaoside with potent anti-human immunodeficiency virus (HIV) activity, has been synthesized. An alkyl oligosaccharide in which a long alkyl group is bonded to the reducing end of the oligosaccharide was first synthesized in high yield. Peracetylated oligosaccharides reacted with
FUNCTIONALIZED NANOPARTICLES FOR MEDICAL TREATMENTS
申请人:UNIVERSITY OF MASSACHUSETTS
公开号:US20160045612A1
公开(公告)日:2016-02-18
A class of functionalized nanoparticles useful in medical treatments is described. The nanoparticles have an attached carbohydrate that is selected on the basis that a cell to be treated ingests as a consequence of the presence of the carbohydrate. The nanoparticles have an attached chemical that if inside the cell is capable of treating the cell (e.g., curing a disease condition in the cell, killing the cell if it is pathogenic, or improving the health of the cell). The nanoparticle carries the chemical preferentially into the cell because the cell will ingest the carbohydrate, and thereby allows the nanoparticle and the chemical into itself.
Insertion of a<scp>D</scp>-glucosamine residue into the α-cyclodextrin skeleton; a model synthesis of ‘chimera cyclodextrins’
作者:Nobuo Sakairi、Lai-Xi Wang、Hiroyoshi Kuzuhara
DOI:10.1039/c39910000289
日期:——
Efficient conversion of α-cyclodextrin peracetate 2 into icosa-O-acetylmaltohexaose 3 by acetolytic fission of one glycosidic linkage, a series of manipulations including coupling with a 2-azido-2-deoxy-D-glucopyranose derivative, recyclization and final work-up (catalytic hydrogenolysis etc.) gave a novel β-cyclodextrin analogue 10 containing a D-glucosamine residue as a monosaccharide component.
Exploiting an aromatic aglycone as a reporter of glycosylation stereochemistry in the synthesis of 1,6-linked maltooligosaccharides
作者:Laurence Marmuse、Sergey A. Nepogodiev、Robert A. Field
DOI:10.1016/j.tetasy.2004.11.047
日期:2005.1
Analysis of glycosylation stercoselectivity in the synthesis of branched maltooligosaccharides is hampered by poor spectral dispersion due to the repetitive nature of the saccharide chain and overlap of sugar H-l signals with benzylic proton signals from the typically used benzyl ether protecting groups. A suitably protected p-methoxyphenyl maltoside acceptor, when coupled with benzylated maltooligosaccharide donors, gives discrete aglycone H-1 NMR signals that can be used to report on the stereo selectivity of 1,6-glycosylation reactions. (C) 2004 Elsevier Ltd. All rights reserved.