Sesqui- and diterpenoids from three New Zealand liverworts: Bazzania novae-zelandiae, Gackstroemia sp. and Dendromastigophora sp.

Two new sesquiterpenoids, 1 and 2, were isolated from the unidentified liverwort Gackstroemia species, and three known sesquiterpenoids, 3-5, and a known sesqui- (6) and diterpenoid (7) were isolated from Bazzania novae-zelandiae and the unidentified Dendromastigophora species, respectively. Their structures were determined by spectroscopic analysis.