Cyclodextrins and Their Complexes: Chemistry, Analytical by Helena Dodziuk

By Helena Dodziuk

Delivering complete and recent understand how in a single compact ebook, an skilled editor and most sensible authors conceal each element of those very important molecules from molecular reputation to cyclodextrins as enzyme versions. Chapters comprise reactivity and chemistry, chromatography, X ray, NMR plus different physicochemical tools, in addition to version calculations, rotaxane and catenane buildings, and purposes within the pharmaceutical undefined. The publication additionally discusses different functions corresponding to within the cosmetics, toiletries, fabric and wrapping industries, agrochemistry, electrochemical sensors, and units. This booklet is a needs to for everybody operating with those ingredients.

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Extra resources for Cyclodextrins and Their Complexes: Chemistry, Analytical Methods, Applications

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The number and the exact position of substituents have to be established before mechanistic information about the supramolecular behavior can be reliably derived. This section provides the systematic description of modification methods that is a prerequisite for any detailed discussion of CyD functionalizations. Two predominant factors have to be considered for modification reactions involving CyD; the nucleophilicity of the hydroxyl groups of the C2-, C3- and C6-positions and the ability of CyDs to form complexes with the reagents used.

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A CyD dimer 10 with a functional tether was synthesized for residue- and sequence-selective binding of nonaromatic dipeptides, binding Gly–Leu significantly better than Leu–Gly [136]. 3 Chemistry of Modified Cyclodextrins and the relevant charged group (CO2 À or NH3 þ ) remaining in the amino acid residues. Dimer 11 with a pyridine-2,6-dicarboxamide linker showed a pH-dependent binding affinity for oligopeptides resulting in a stronger association with oligopeptides in neutral media because of electrostatic interactions between the diamidopyridine group and the carboxylate of the peptides [137].

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