title: Podocarpane-type trinorditerpenes from the bark of Taiwania cryptomerioides.
abstract: Five new podocarpane-type trinorditerpenes were isolated from the bark of Taiwania cryptomerioides. Structures of 1beta, 14-dihydroxy-13-methoxy-6,8,11,13-podocarpatetraene (1), 1beta, 14-dihydroxy-13-methoxy-8,11,13-podocarpatriene (2), 13-hydroxy-12-methoxy-8,11,13-podocarpatrien-3-one (3), 14-hydroxy-13-methoxy-1,8,11,13-podocarpatetraen-3-one (4), and 13-methoxy-8,12-podocarpatriene-11,14-dione (5) were determined by NMR, MS, and other spectral and chemical evidence.
authors.affiliation: Department of Chemistry, National Taiwan University, Taipei, Taiwan, Republic of China. yhkuo@ccms.ntu.edu.tw
authors.forename: Y H
authors.initials: YH
authors.lastname: Kuo
authors.forename: C I
authors.initials: CI
authors.lastname: Chang
mesh_terms: D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D019441:Plant Epidermis / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D013624:Taiwan
chemical_list: D004224:Diterpenes