title: [Studies on chemical constituents from roots of Craibiodendron henryi].
abstract: OBJECTIVE
  To study the chemical constituents from the roots of Craibiodendron henryi.
  
  
  METHODS
  Various chromatographic techniques were used to isolate and purify the constituents. The structures were elucidated by chemical evidence and spectral methods.
  
  
  RESULTS
  Twelve compounds were isolated from the ethyl acetate soluble fraction of the 95% ethanolic extract and their struc- tures were elucidated as quercetin (1), quercetin-3-O-rhamnicoside (2), quercetin-3-O-arabinofuranoside (3), (-)-epicatechin (4), proanthocyanidin A-2 (5), procyanidin B-2 (6), (-)-isolariciresinol-2a-O-beta-D-xylopyranoside (7), lyoniside (8), sitoster-yl-3beta-glucoside-6'-O-palmitate (9), beta-sitosterol (10), daucosterol (11) and octacosanoic acid (12).
  
  
  CONCLUSIONS
  Compounds 1-12 were isolated from this plant for the first time.
authors.affiliation: Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
authors.forename: Xiang-Zhong
authors.initials: XZ
authors.lastname: Huang
authors.forename: Yue
authors.initials: Y
authors.lastname: Liu
authors.forename: Shi-Shan
authors.initials: SS
authors.lastname: Yu
authors.forename: You-Cai
authors.initials: YC
authors.lastname: Hu
authors.forename: Jing
authors.initials: J
authors.lastname: Qu
mesh_terms: D044946:Biflavonoids / Q000737:chemistry / Q000302:isolation & purification*; D002392:Catechin / Q000737:chemistry / Q000302:isolation & purification*; D029791:Ericaceae / Q000737:chemistry*; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D044945:Proanthocyanidins / Q000737:chemistry / Q000302:isolation & purification*; D011794:Quercetin / Q000737:chemistry / Q000302:isolation & purification; D012855:Sitosterols / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D044946:Biflavonoids; D044945:Proanthocyanidins; D012855:Sitosterols; C479580:procyanidin B2; C473740:proanthocyanidin A2; D002392:Catechin; D011794:Quercetin; C011015:lyoniside