7 research outputs found

    Molecular structure of fagopyritol Al (O-alpha-D-galactopyranosyl-(1 -> 3)-D-chiro-inositol) by NMR

    No full text
    The molecular structure of fagopyritol A1, a novel galactopyranosyl cyclitol from buckwheat seeds, was determined to be O-alpha-D-galactopyranosyl-(1-->2)-D-chiro-inositol by H-1 and C-13 NMR. Fagopyritol Al is a positional isomer of fagopyritol B1 (O-alpha-D-galactopyranosyl-(1-->2)-D-chiro-inositol), representing a different series of fagopyritol oligomers. Trimethylsilyl derivatives of both compounds have similar mass spectra, but each may be identified by different abundance ratios of fragments with m/z 305/318 and 318/319. (C) 2000 Elsevier Science Ltd. All rights reserved
    corecore