title: [Study on chemical constituents from the roots of Saussurea lappa].
abstract: OBJECTIVE
  To study the chemical constituents roots of Saussurea lappa C. B. Clarke.
  
  
  METHODS
  Isolation and purification were carried out by silica gel, Sephadex LH-20 and RP-18 column chromatography. The chemical structures of constituents were elucidated on the basis of spectral data.
  
  
  RESULTS
  Eight compounds were isolated and identified as: 1beta-hydroxycolartin (1), 5alpha-hydroxy-beta-costic acid (2), 11alpha,13-dihydroxydehidrocostuslactone (3),11,13-dihydro-7,11-dehydro-13-hydroxy-3-desoxyzaluzanin C (4), 8alpha-hydroxyl-11betaH-11,13-dihydrodehydrocostuslactone (5), Soulangianolide A (6), Syringaresinol (7), Scopoletin (8).
  
  
  CONCLUSIONS
  Compounds 1-4, 6-8 were isolated from the genus Saussurea for the first time, and compound 5 was isolated from this plant for the first time.
authors: Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
authors: Ting
authors: T
authors: Zhang
authors: Yan
authors: Y
authors: Yang
authors: Guanhua
authors: G
authors: Du
authors: Ruoyun
authors: R
authors: Chen
mesh_terms: D018517:Plant Roots / Q000737:chemistry*; D030441:Saussurea / Q000737:chemistry*; D012717:Sesquiterpenes / Q000737:chemistry
chemical_list: D012717:Sesquiterpenes