(α-Man)-containing neoglycoconjugates possessing aliphatic-, aromatic-, and carbohydrate-centered architectures and differing in structural characteristics such as valency, topology, and nature of the linker have been synthesized using click chemistry that shows its value as an efficient and versatile methodology for accessing tailor-made multivalentneoglycoconjugates. The binding behaviour of these
Hydrogen Bonding vs Steric Gearing in a Hexasubstituted Benzene
作者:Jesse V. Gavette、Andrew L. Sargent、William E. Allen
DOI:10.1021/jo800226s
日期:2008.5.1
Treatment of hexakis(bromomethyl)benzene with excess NaN3, followed by hydrogenation of the resultant polyazide, affords hexamine 3 in high yield. Coupling to six equivalents of nonanoic acid provides hexamide 5 without chromatographic purification. The NH resonance of 5 appears far downfield (∼9.7 ppm) in CDCl3 and is unaffected by changes in concentration or by addition of chloride or trifluoromethanesulfonate
Synthesis and catalytic application of glycodendrimers decorated with gold nanoparticles – reduction of 4-nitrophenol
作者:Ayyavoo Kannan、Perumal Rajakumar
DOI:10.1039/c5ra06375b
日期:——
Goldnanoparticle decorated glycodendrimers 1, 2, 3 and 4 were synthesized using a click chemistry approach. Goldnanoparticles (NPs) were synthesized in good yields either by stabilization or encapsulation of the triazolyl glycodendrimers. Goldnanoparticles were stabilized (DSNPs) by the zeroth generation dendrimer and encapsulated (DENPs) by the first generation glycodendrimer. The Au–DSNPs and
Triazole-based novel dendrimers with ferrocenyl surface groups have been achieved through click chemistry, both by divergent and convergent approaches. The presence of more ferrocenyl and triazolyl units in dendrimers 1–4 alters the current potential curve in the voltammogram and also the absorption coefficient in the UV-vis spectrum.