title: Three new belamcandaquinones from Ardisia punctata.
abstract: OBJECTIVE
  To study the chemical constituents of Ardisia punctata.
  
  
  METHODS
  Compounds were separated with a combination of multi-chromatography. Their chemical structures were determined on the basis of spectral analysis and single crystal X-ray diffraction.
  
  
  RESULTS
  Three compounds were isolated from chloroform extract of the roots of Ardisia punctata. Their structures were elucidated as 2-tridecyl-3-[(2-tridecyl-3-acetoxy-4-methoxy-6-hydroxy) -phenyl]-6-methoxy-1, 4-benzoquinone (1), 2-tridecyl-3-[(2-tridecyl-4,6-dihydroxy) -phenyl]-6-methoxy-1,4-benzoquinone (2) and 2-tridecyl-3-[(2-pentadecyl-4,6-dihydroxyl) -phenyl]-6-methoxy-,4-benzoquinone (3).
  
  
  CONCLUSIONS
  The three compounds are new 1,4-benzoquinone derivatives.
authors.affiliation: Institute of Chinese Materia Medica, China Academy of Traditional Chinese Medicine, Beijing 100700, China. wenyeli@yahoo.com.cn
authors.forename: Chun
authors.initials: C
authors.lastname: Li
authors.forename: Dang-kun
authors.initials: DK
authors.lastname: Yue
authors.forename: Peng-bin
authors.initials: PB
authors.lastname: Bu
authors.forename: You-fu
authors.initials: YF
authors.lastname: Sun
mesh_terms: D031644:Ardisia / Q000737:chemistry*; D016227:Benzoquinones / Q000737:chemistry / Q000302:isolation & purification*; D008968:Molecular Conformation; D015394:Molecular Structure; D010636:Phenols / Q000737:chemistry / Q000302:isolation & purification*; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012118:Resorcinols / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: C526387:2-tridecyl-3-((2-pentadecyl-4,6-dihydroxy)phenyl)-6-methoxy-1,4-benzoquinone; C526385:2-tridecyl-3-((2-tridecyl-3-acetoxy-4-methoxy-6-hydroxy)phenyl)-6-methoxy-1,4-benzoquinone; C526386:2-tridecyl-3-((2-tridecyl-4,6-dihydroxy)phenyl)-6-methoxy-1,4-benzoquinone; D016227:Benzoquinones; D010636:Phenols; D012118:Resorcinols