H. Sashiwa et al., Chemical modification of chitosan: preparation of chitosan-sialic acid branched polysaccharide hybrids, CHEM COMMUN, (11), 2000, pp. 909-910
Water soluble hybrids of chitosan and sialic acid were prepared in good yie
lds via reductive N-alkylation of p-formylphenyl alpha-sialoside 2 onto chi
tosan amine functionalities.