A xanthone glucoside, dillanoside, was isolated from the ethyl acetate extract of a crude drug, dill (Zira), the fruits of Anethum graveolens L. (Umbelliferae), and it was elucidated as 9, 11-dihydroxy-2-methoxybenzo [a] xanthone 9-O-β-D-glucoside (I).
