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