title: A novel L-fuco-4-O-methyl-D-glucurono-D-xylan from Hyptis suaveolens.
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.
authors.affiliation: Department of Chemistry, York University, Toronto, Ontario, Canada.
authors.forename: G O
authors.initials: GO
authors.lastname: Aspinall
authors.forename: P
authors.initials: P
authors.lastname: Capek
authors.forename: R C
authors.initials: RC
authors.lastname: Carpenter
authors.forename: D C
authors.initials: DC
authors.lastname: Gowda
authors.forename: J
authors.initials: J
authors.lastname: Szafranek
mesh_terms: D002240:Carbohydrate Sequence; D008969:Molecular Sequence Data; D015394:Molecular Structure; D010944:Plants / Q000737:chemistry*; D014990:Xylans / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D014990:Xylans; C071636:fuco-4-O-methylglucuronoxylan