title: Terpenoids and bibenzyls from three Argentine liverworts.
abstract: A new rosane diterpenoid, 3a-hydroxy-5,15-rosadien-11-one (3), was isolated, together with a known rosane diterpenoid, 5,15-rosadiene-3,11-dione (4), and an aromadendrane sesquiterpenoid, ent-cyclocolorenone (5), from the Et(2)O extract of an unidentified Argentine liverwort Anastrophyllum species. Moreover, four known sesquiterpene lactones 6-9 and two known bibenzyls 10, 11 were isolated from the Et(2)O extracts of Argentine Frullania brasiliensis and Radula voluta, respectively. The structures of compounds 3-11 were determined by the use of NMR techniques.
authors.affiliation: Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Japan. fnaga@ph.bunri-u.ac.jp
authors.forename: Fumihiro
authors.initials: F
authors.lastname: Nagashima
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Asakawa
mesh_terms: D001118:Argentina; D001632:Bibenzyls / Q000737:chemistry / Q000302:isolation & purification*; D035926:Hepatophyta / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013729:Terpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D001632:Bibenzyls; D013729:Terpenes