Oligosaccharides aldonic acids

The first surface-initiated enzymatic polymerization reported was the synthesis of amylose brushes on planar and spherical surfaces [145]. For this, silica or silicone surfaces were modified with self-assembled monolayers of (3 amino-propyl)trimethoxysilane or chlorodimethylsilane, respectively. To these functionalities, oligosaccharides were added via (a) reductive amidation of the oligosaccharides to surface-bound amines, (b) conversion of the oiigosaccharide to the according aldonic acid lactone and reaction with surface bound amines, and (c) incorporation... 

Table 1 lists some examples for the electrophoretic separation of carbohydrates on the supports described above. Table 2 lists the electrophoretic mobilities of some common mono-, di-, oligosaccharides, sugar alcohols, and aldonic acids. Table 3 summarizes the electrophoretic mobilities of sugar acids, sugar phosphates, and amino sugars. In Table 4, the chromatographic conditions used in Tables 2 and 3 can be deduced by the use of the corresponding reference letters (A-G). 

Table 2 Electrophoretic mobilities of mono-, di-, oligosaccharides, sugar alcohols, and aldonic acids...

The reducing-end residue of several oligosaccharides has been labelled by reduction with sodium borotritiide, and oligosaccharides have been coupled to proteins, to give pseudoglycoproteins, following oxidation to the aldonic acids. ... 

Aldoses and reducing oligosaccharides are relatively easily oxidised without loss of carbon to acids, and four types of acidic monosaccharides, namely aldonic, oxoaldoiiic, hexuronic, and ascorbic acids, have been isolated from natural environments. 

---