Carbohydrate monomers

Instead of preparing carbohydrate monomers, activated polymers of known molecular weight can also be synthesized [11]. The strategy offers the distinct... 

Proton signal assignments (Fig. 6.2), corresponding chemical shifts and estimated homonuclear J-coupling constants for all 3 carbohydrate monomers... 

Other glycopolymers carrying a sialyl Lewisx mimic were obtained by copolymerization of functionalized carbohydrate monomers with acrylamide for... 

The proposed structure of the complex heterosaccharide is shown in Fig. 9. Fragmentation studies suggest that the carbohydrate monomers are supposed to be arranged in three domains. Glycyl bridges may link (V-acetylglucosamine and uronosyl residues of the different domains [85]. No data on the biosynthesis of the Halococcus cell-wall heteropolysaccharide are available. 

Carbohydrates play an important role in many research and industrial domains. The huge number of stereoisomers, the immense combination possibilities of carbohydrate monomers in oligosaccharides, and the lack of chromophores are the major problems in the analysis of carbohydrates. Capillary electrophoresis (CE), in its various modes of operation, has been developed as a very useful tool in the analysis of carbohydrate species such as monosaccharides and oligosaccharides, glycoproteins, and glycopeptides. 

Likewise, half of all proteins in humans are modified by glycosylation involving the addition of carbohydrate monomers. Certain membrane proteins are modified by attachment to fatty acids or lipids. Some other proteins like insulin or immunoglobulin are stabilized by the formation of disulfide... 

Fruit and variety Type of residue Carbohydrate monomers % of Extracted material... 

Table V. Carbohydrate monomers in the easily hydrolyzable fraction of the alcohol Insoluble solids of citrus processing residue.

Fruit and variety Type of residue Arab. Carbohydrate monomers Xyl. Gal. Others (mg/g AIS) 5 Total of Extracted material... 

Sugar-based monomers. Carbohydrate monomers. Bifunctional sugar derivatives. Alditols, Aminosugars, Aldonic acids, Aldaric acids... 

Although the assays of homopolymerization of this lactone were also unsuccessful, we carried out a copolymerization experiment by the bulk ring-opening polymerization of a mixture of L-lactide and 2,3,4,5-tetra-O-methyl-D-glucono-1,6-lactone, in a ratio of 5 1, using tin (IT) 2-ethyUiexanoate (SnOct2) as initiator. From the copolymerization reaction mixture, we obtained two copolymers, containing 1.3 and 2.2 per cent of the carbohydrate monomer, respectively, as determined by NMR studies. 

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