title: Five new diterpenoids from the bark of Taiwania cryptomerioides.
abstract: Five new diterpenoids, 11-hydroxyabieta-8,11,13-trien-7-one (1), 11,12,14-trihydroxyabieta-8,11,13-trien-7-one (2), 6beta,7alpha-diacetoxyroyleanone (3), 7beta-hydroxymanoyl oxide (4), and 9alpha-hydroxyisopimara-8(14),15-dien-7-one (5) were obtained from the bark of Taiwania cryptomerioides. The structures of the new compounds 1-5 were elucidated on the basis of spectral analysis and chemical evidence.
authors.affiliation: Graduate Institute of Biotechnology, National Pingtung University of Science and Technology, Taiwan.
authors.forename: Chi-I
authors.initials: CI
authors.lastname: Chang
authors.forename: Mei-Huims
authors.initials: MH
authors.lastname: Tseng
authors.forename: Yueh-Hsiung
authors.initials: YH
authors.lastname: Kuo
mesh_terms: D029779:Cupressaceae / Q000737:chemistry*; D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification*; D024301:Plant Bark / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry; D013624:Taiwan
chemical_list: D004224:Diterpenes; D010936:Plant Extracts