title: [Studies on the chemical constituents from stem of Chirita longgangensis var. Hongyao].
abstract: OBJECTIVE
  To isolate and elucidate the constituents from stem of Chirita longgangensis var. hongyao.
  
  
  METHODS
  The constituents were extracted with methanol and isolated by chromatography on silica gel, Sephadex LH-20 and ODS. The structures were determined by NMR and MS spectral analysis.
  
  
  RESULTS
  Seven compounds were identified as 2-hydroxy-7-methyl-9, 10-anthraquinone (1), 2-methyl-9, 10-anthraquinone (tectoquinone) (2), ursolic acid (3), vanillic acid (4), beta-sitosteryl-D-glucoside-6'-palmitate (5), beta-sitosterol (6), daucosterol (7), respectively.
  
  
  CONCLUSIONS
  Compounds 1, 2, 3 and 5 were isolated for the first time from the family Gesneriaceae, compounds 4 and 6 were isolated for the first time from the genus Chirita, and compound 7 was isolated for the frist time from Chirita longgangensis var.
authors.affiliation: Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China.
authors.forename: Man-Yuan
authors.initials: MY
authors.lastname: Wang
authors.forename: Lan
authors.initials: L
authors.lastname: Yang
authors.forename: You-You
authors.initials: YY
authors.lastname: Tu
mesh_terms: D000880:Anthraquinones / Q000737:chemistry / Q000302:isolation & purification*; D019684:Magnoliopsida / Q000737:chemistry*; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*; D000097245:Ursolic Acid
chemical_list: D000880:Anthraquinones; D014315:Triterpenes; D000097245:Ursolic Acid; C077912:2-(hydroxymethyl)anthraquinone; C073955:2-methylanthraquinone