title: [Studies on chemical constituents from twigs of Morus atropurpurea].
abstract: OBJECTIVE
  To study the chemical constituents of the twigs of Morus atropurpurea.
  
  
  METHODS
  The compounds of the EtOAc fraction were isolated and purified by column chromatography on silica gel, polyamide, Sephadex LH -20, and their structures were elucidated on the basis of spectroscopic evidence (MS, NMR).
  
  
  RESULTS
  Eleven compounds were identified as mulberrin (1), cyclomulberrin (2), morusin (3), cyclomorusin (4), 2', 4',4, 2"-tetrahydroxy-3'-{3"-methylbut-3"-enyl-}-chalcone (5), mulberrofran G (6), scopoletin (7), moruchalcone A (8), kaempferol (9), ursolic acid (10), beta-daucosterol (11).
  
  
  CONCLUSIONS
  Except compounds 9 and 11, all the other compounds were obtained from M. atropurpurea for the first time.
authors.affiliation: Guangdong Provincial Key Lab of Biotechnology for Plant Development, South China Normal University, Guangzhou 510631, China.
authors.forename: Yan-Lan
authors.initials: YL
authors.lastname: Xu
authors.forename: Xu-E
authors.initials: XE
authors.lastname: Li
authors.forename: Yu-Xiao
authors.initials: YX
authors.lastname: Zou
authors.forename: Ji-Jun
authors.initials: JJ
authors.lastname: Chen
mesh_terms: D005419:Flavonoids / Q000737:chemistry; D044949:Kaempferols / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D031625:Morus / Q000737:chemistry; D010840:Phytosterols / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry*; D012603:Scopoletin / Q000737:chemistry; D014315:Triterpenes / Q000737:chemistry; D000097245:Ursolic Acid
chemical_list: D005419:Flavonoids; D044949:Kaempferols; D010840:Phytosterols; D012603:Scopoletin; D014315:Triterpenes; D000097245:Ursolic Acid; C530443:beta-dauosterol; C057451:morusin; C006552:kaempferol