title: Labdane-type diterpenoids from the wood of Cunninghamia konishii.
abstract: Five new labdane-type diterpenes, 12beta,19-dihydroxymanoyl oxide (1), 8(17),13-labdadien-12,15-olid-19-oic acid (2), 12,15-epoxy-8(17),13-labdadien-18-oic acid (3), 8alpha-hydroxy-11E,13Z-labdadien-15-al (4), and (13R)-13-hydroxy-8(17), 11E,14-labdatrien-18-oic acid (5) were isolated from the wood of Cunninghamia konishii. Their structures were elucidated by two-dimensional NMR spectroscopy.
authors.affiliation: Department of Chemistry, National Taiwan University, Taipei, Republic of China.
authors.forename: Yen-Cheng
authors.initials: YC
authors.lastname: Li
authors.forename: Yueh-Hsiung
authors.initials: YH
authors.lastname: Kuo
mesh_terms: D002850:Chromatography, Gel; D002851:Chromatography, High Pressure Liquid; D029779:Cupressaceae / Q000737:chemistry*; D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D021241:Spectrometry, Mass, Electrospray Ionization; D014197:Trees / Q000737:chemistry; D014934:Wood
chemical_list: D004224:Diterpenes; C433017:labdane