Structures of Ferulic Acid Glycoside Esters in Corn Hulls

1D-NMR ( 1 H and 13 C) and 2D-NMR spectroscopy as well as chemical means have been used to determine the structures of three new feruloylated disaccharides derived from acid hydrolysis of corn hulls. The structures of these oligosaccharides were determined to be O -(2‘- O - trans -feruloyl-α- l -arabinofuranosyl)-(1→3)-β− d -xylopyranose, O -[2‘- O -methoxyl-5‘- O -( E )-feruloyl]-α- l -arabinofuranosyl-(1→3)-β- d -xylopyranose, and O -[2‘- O -methoxyl-5‘- O -( Z )-feruloyl]-α- l -arabinofuranosyl-(1→3)- d -β-xylopyranose.