A new phenolic glycoside from Cnidium monnieri fruits.

A new phenolic glycoside, methylpicraquassioside B (6), together with nine known glycosides, cnidioside A (1), cnidioside B (2), picraquassioside A (3), methylpicraquassioside A (4), picraquassioside B (5), xanthotoxol-8-β-glucoside (7), 5-methoxy-xanthotoxol-8-β-glucoside (8), 8-methoxy-xanthotoxol-5-β-glucoside (9) and marmesinin (10) were isolated from n-BuOH-soluble fraction of Cnidium monnieri fruits. All the isolated compounds, however, exerted little immunomodulatory effect in RAW 264.7 cells.