title: [Chemical constituents of Cyanotis arachnoidea].
abstract: OBJECTIVE
  To investigate the chemical constituents of Cyanotis arachnoidea.
  
  
  METHODS
  By using chromatographic methods for separation and combination with spectral analysis, their chemical structures were determined.
  
  
  RESULTS
  Six compounds were identified as ajugasterone C-20, 22-acetonide (1), 20-hydroxyecdysone-20, 22-acetonide (2), 22-oxo-ajugasterone C (3), 22-oxo-20-hydroxyecdysone (4), beta-sitosterol (5), daucosterol (6).
  
  
  CONCLUSIONS
  Compound 3 is a new compound, 4 was a new natural compound.
authors.affiliation: Natural Products and Glycoconjugate Research Group, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China. tanchyu@sina.com
authors.forename: Cheng-yu
authors.initials: CY
authors.lastname: Tan
authors.forename: Jin-hui
authors.initials: JH
authors.lastname: Wang
authors.forename: Xian
authors.initials: X
authors.lastname: Li
authors.forename: Yu-guang
authors.initials: YG
authors.lastname: Du
authors.forename: Xue-fang
authors.initials: XF
authors.lastname: Bai
mesh_terms: D034821:Commelinaceae / Q000737:chemistry*; D004440:Ecdysone / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification*; D004441:Ecdysterone / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*; D012855:Sitosterols / Q000737:chemistry / Q000302:isolation & purification
chemical_list: C488558:22-oxo-20-hydroxyecdysone; C488557:22-oxo-ajugasterone C; D012855:Sitosterols; D004440:Ecdysone; D004441:Ecdysterone; C025473:gamma-sitosterol