Ajanoside, a xanthine oxidase inhibitor with a novel skeleton from Ajania fruticulosa

The structure of ajanoside, a xanthine oxidase inhibitor with a novel skele ton isolated from the aerial parts of Ajania fruticulosa, was determined to be [2,2-bis(4-hydroxy-3-methoxyphenyl)-4-oxo-1,3-dioxin-5-yl]methyl beta - D-glucopyranoside on the basis of extensive spectroscopic analyses.