A novel L-fuco-4-O-methyl-D-glucurono-D-xylan from Hyptis suaveolens |
| |
| Authors: | G O Aspinall P Capek R C Carpenter D C Gowda J Szafranek |
| |
| Institution: | Department of Chemistry, York University, Toronto, Ontario, Canada. |
| |
| Abstract: | The acidic polysaccharide from the seed-coat mucilage of Hyptis suaveolens is a highly branched L-fuco-4-O-methyl-D-glucurono-D-xylan for which a structure is proposed having a 4-linked beta-D-xylan backbone carrying side chains of single 4-O-methyl-alpha-D-glucuronic acid residues at O-2 and 2-O-L-fucopyranosyl-D-xylopyranose units at O-3. The structural analysis involves base-catalyzed beta-elimination of uronic acid residues from the methylated glycan followed by degradation using a modified Svensson oxidation-elimination sequence. |
| |
| Keywords: | |
|
|
