A ¹³C N.M.R. study of some disaccharides from algal polysaccharides

Abstract

The acid hydrolysis of agar, a partially methylated agar, and K-carrageenan initially gives the disaccharide resulting from cleavage of the link between the anhydrogalactose and the galactose units. A new method for isolating these disaccharides on a preparative scale is described, and their ¹³C n.m.r. spectra are listed and assigned.