Diterpenoids from aerial parts of Flickingeria fimbriata and their nuclear factor-kappaB inhibitory activities

Rare 16-nor-ent-pimarane type diterpenoids (1-5), two 15,16-dinor-ent-pimarane type (6-7) and one ent-pimarane diterpenoid (11), together with eight known analogs were isolated from Flickingeria fimbriata.