Reductive alkylation (Fig. 3) of the amine group
of chitooligosaccharide with d-(+)-glucosamine
hydrochloride in the presence of sodium cyanoborohydride
afforded the aminoglycosylated derivative
with 67% yield. The derivative was analyzed
by FT-IR spectroscopy and elemental microanalysis
(Lim and Hudson, 2004). The FT-IR spectrum