Complete 1H and 13C NMR assignments of diosgenyl saponins

Abstract

The complete assignments of 1H and 13C NMR data for a series of synthesized diosgenyl saponin analogs are described, viz. diosgenyl β-D-glucopyranoside (1), diosgenyl α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranoside (2), diosgenyl α-L-rhamnopyranosyl-(1→3)-β-D-glucopyranoside (3), diosgenyl α-L-rhamnopyranosyl-(1→2)-α-L-rhamnopyranosyl-(1→3)-β-D-glucopyranoside (4), α-L-rhamnopyranosyl-(1→2)-β-D-xylopyranosyl-(1→3)-β-D-glucopyranoside (5), α-L-rhamnopyranosyl-(1→2)-β-L-arabinofuranosyl-(1→3)-β-D-glucopyranoside (6) and α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranosyl-(1→3)-β-D-glucopyranoside (7). The assignments were achieved using homo- and heteronuclear two-dimensional NMR techniques. Copyright © 1999 John Wiley & Sons, Ltd.