Jungermanool,a new labdane diol from the liverwort,Jungermannia torticalyx steph

Summary A new diterpenoid named jungermanool was isolated fromJungermannia torticalyx and the structure was found to be labda-8 (17), 14-dien-9, 13-diol by chemical and spectroscopical methods.Chemical constituents fromHepaticae, Part XXIV: Part XXIII,A. Matsuo, H. Nozaki, M. Nakayama, Y. Kushi, S. Hayashi andN. Kamijo, Tetrahedron Lett.1975, 241.The authors wish to express their gratitude to Dr.T. Seki, Department of Botany, Hiroshima University, for the collection and identification of the liverwort.