Novel cytotoxic kaurane-type diterpenoids from the New Zealand Liverwort Jungermannia species

Novel cytotoxic rearranged kaurane- and ent-kaurane-type diterpenoids against HL-60 cells have been isolated from the unidentified New Zealand liverwort Jungermannia species, together with previously known diterpenoids. Their structures determined by extensive NMR techniques.