Activity directed investigation on anti-inflammatory fractions and compounds from flowers of Trollius chinensis.

The flower of Trollius chinensis Bunge is used as an anti-inflammatory drug to treat upper respiratory tract infection, pharyngitis, tonsillitis, and bronchitis. In order to identify the active components, the activity-screen directed compound isolation was carried out, leading to the identification of the major active fraction and 4 compounds thereof. As a result, flavonoids and phenolics were demonstrated to be the major anti-inflammatory components.