Sesqui- and diterpenoids from the Japanese liverwort Jungermannia infusca.
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.
Nagashima
F
F
Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514, Japan. fnaga@ph.bunri-u.ac.jp
Suzuki
M
M
Takaoka
S
S
Asakawa
Y
Y
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
D004224:Diterpenes; D012717:Sesquiterpenes