Abstract
A new cyclogorgonane–type sesquiterpenoid, 1,5-cyclo-3,6-gorgonadien-15,11-olide was isolated from the New Zealand liverwort Lepidozia spinosissima, together with three known sesquiterpenoids. Their structures were established by the extensive NMR techniques and chemical reaction.
Acknowledgements
We thank Dr. M. Tanaka (TBU) and Miss Y. Okamoto (TBU) for measurements of the NMR and mass spectra. Thanks are also due to Prof. J. E. Braggins (The Auckland University) for the identification of the species. This work was supported by a Grant-in-Aid for Scientific Research (A) (No. 11309012) from the Ministry of Education, Culture, Sports, Science and Technology.