title: [Studies on chemical constituents of root of Cichorium intybus].
abstract: OBJECTIVE
  To study the chemical constituents in the root of Cichorium intybus.
  
  
  METHODS
  The compounds were isolated and identified by column chromatography and NMR, IR, MS data.
  
  
  RESULTS
  Twelve compounds were isolated and identified.
  
  
  CONCLUSIONS
  2,3,4,9-tetrahydro-1H-pyrido-(3,4-b)indole-3-carboxylic acid was isolated from the Cichorium genus for the first time, azelaic acid and daucosterol were isolated from the the plant for the first time.
authors.affiliation: National Institute for the Control of Pharmaceutical and Biological Products, Beijing 100050, China. ejsheyi@Sina.com
authors.forename: Yi
authors.initials: Y
authors.lastname: He
authors.forename: Ya-jian
authors.initials: YJ
authors.lastname: Guo
authors.forename: Yun-yan
authors.initials: YY
authors.lastname: Gao
mesh_terms: D018651:Cichorium intybus / Q000737:chemistry*; D003998:Dicarboxylic Acids / Q000737:chemistry / Q000302:isolation & purification*; D007211:Indoles / Q000737:chemistry / Q000302:isolation & purification*; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012855:Sitosterols / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: C477174:2,3,4,9-tetrahydro-1H-pyrido(3,4-b)indole-3-carboxylic acid; D003998:Dicarboxylic Acids; D007211:Indoles; D012855:Sitosterols; C010038:azelaic acid; C011015:lyoniside