Chemical Constituents of Verbena bonariensis

Four known flavone glucuronides, luteolin-7-O-β-D-glucuronide (8), apigenin-7-O-β-D-glucuronide (9), chrysoeriol-7-O-β-D-glucuronide (10) and hispidulin-7-O-β-D-glucuronide (11), and seven known phenolic compounds (1-7) were isolated from the whole plant of Verbena bonariensis. The structures of all compounds were determined by spectroscopic analysis.