title: Sesqui- and diterpenoids from the Japanese liverwort Jungermannia infusca.
abstract: Seven new cuparane-type (1-7), one new acorane-type (8), one new monocyclic-type (9), and one new prelacinane-type (10) sesquiterpenoid as well as two new clerodane-type (11, 12) and one new halimane-type (13) diterpenoid were isolated from the Japanese liverwort Jungermannia infusca, together with 12 known cuparane- (14-21) and aromadendrane-type (22) sesquiterpenoids and labdane- (23) and ent-kaurane-type (24) diterpenoids. The structures for 1-13 were determined using extensive NMR techniques and by chemical degradation and X-ray crystallographic analysis.
authors.affiliation: Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514, Japan. fnaga@ph.bunri-u.ac.jp
authors.forename: F
authors.initials: F
authors.lastname: Nagashima
authors.forename: M
authors.initials: M
authors.lastname: Suzuki
authors.forename: S
authors.initials: S
authors.lastname: Takaoka
authors.forename: Y
authors.initials: Y
authors.lastname: Asakawa
mesh_terms: D002851:Chromatography, High Pressure Liquid; D002855:Chromatography, Thin Layer; D018360:Crystallography, X-Ray; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D007564:Japan; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D015394:Molecular Structure; D010084:Oxidation-Reduction; D010946:Plants, Medicinal / Q000737:chemistry*; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification*; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D013237:Stereoisomerism
chemical_list: D004224:Diterpenes; D012717:Sesquiterpenes