Abstract Five new clerodane-type diterpenoids were isolated from the liverwortJungermanniainfusca along with a known labdane-type diterpenoid, iso -abienol and six known ent -kaurane type diterpenoids and their structures determined by the extensive NMR examinations and some chemical reactions.
Abstract A new clerodane-type diterpenoid, possessing superoxide release inhibitory activity has been isolated from the liverwortJungermanniainfusca , together with three known diterpenoids and its structure characterized as clerod-3,13(16)-14-trien-17-oic acid by 2D NMR spectroscopy.