title: [Two diterpenoids from herbs of Huperzia serrata].
abstract: OBJECTIVE
  To investigate the constituents from Huperzia serrata.
  
  
  METHODS
  Two diterpenoid compounds were isolated by column chromatography with silica gel and Sephadex LH-20. The structures were elucidated by spectral analysis and X-ray crystallographic analysis.
  
  
  RESULTS
  Their structures were determined as (15R)-12, 16-epoxy-11, 14-dihydroxy-8, 11, 13-abietatrien-7-one (1) and 3beta-hydroxysandaracopimaric acid (2).
  
  
  CONCLUSIONS
  Compound 1 was a new natural abietane-type diterpenoid, compound 2 was isolated from this plant for the first time.
authors.affiliation: Key laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China.
authors.forename: Yabin
authors.initials: Y
authors.lastname: Yang
authors.forename: Xueqiong
authors.initials: X
authors.lastname: Yang
authors.forename: Yanqun
authors.initials: Y
authors.lastname: Xu
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Tai
authors.forename: Liuhong
authors.initials: L
authors.lastname: Dong
authors.forename: Zhongtao
authors.initials: Z
authors.lastname: Ding
mesh_terms: D018360:Crystallography, X-Ray; D004224:Diterpenes / Q000032:analysis / Q000737:chemistry*; D032501:Huperzia / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D004224:Diterpenes