Two new ent-kaurane diterpenoids from Wedelia trilobata (L.) Hitchc

- A rare 18-nor-ent-kaurane diterpenoid (1) and a new chlorine-containing diterpenoid (2) were isolated.
- Five known ent-kaurane diterpenoids (3-7) were also isolated from W. trilobata.
- The new structures were elucidated by spectroscopic techniques.
- Compounds 4-6 showed moderate or significant in vitro antibacterial activity.