Sesquiterpene lactones, chlorogenic acids and flavonoids from leaves of Vernonia polyanthes Less (Asteraceae)

- We performed a phytochemical study using leaves of Vernonia polyanthes Less (Asteraceae).
- The compounds were isolated by prep. HPLC and prep. TLC and analyzed by spectroscopic methods (MS, 1H and 13C NMR).
- We isolated 12 compounds (sesquiterpene lactones, flavonoids and chlorogenic acids), none previously identified in this plant.
- The compounds identified are in agreement with the chemical profile of the subtribe Vernoniinae.
- Phytochemical studies may be useful as a tool for helping the understanding of taxonomic classification of the genus Vernonia.