Abstract: To search for new bioactive constituents from Pedicularis tricolor, a new xanthone named pedicutricone A (1)and a new iridoid named pedicutricoside A (2), along with fifteen known compounds, were isolated from the ethanol extracts of the whole plants of P. tricolor for the first time. Their structures were elucidated based on spectroscopic methods, including two-dimensional nuclear magnetic resonance analysis.

Key words: Scrophulariaceae