J. Kadokawa, Shigeto Kasai, Yoshikatsu Watanabe
Dec 29, 1997
Citations
0
Influential Citations
18
Citations
Journal
Macromolecules
Abstract
This paper describes the acid-catalyzed polymerization of two saccharide monomers, 2-methyl(3,6-di-O-benzyl-1,2-dideoxy-α-d-glucopyrano)-[2,1-d]-2-oxazoline (1) and 2-methyl(3,4-di-O-benzyl-1,2-dideoxy-α-d-glucopyrano)-[2,1-d]-2-oxazoline (3). The polymerization of 1 and 3 proceeded by stereoregular glycosylation to give natural- and non-natural-type aminopolysaccharides 2 and 4, respectively. The polymer structures were determined by means of 1H NMR, 13C NMR, and IR spectra as well as elemental analyses. The molecular weight of 2 was at most 4900, whereas the highest molecular weight of 4 was 13 100. Debenzylation of 2 and 4 was carried out by the catalytic hydrogenation in the presence of 10% Pd−C to give free aminopolysaccharides.