title: [Studies on chemical constituents in the roots of Rabdosia japonica (Burm.f). Hara var. glaucocalyx (Maxin) Hara].
abstract: OBJECTIVE
  To isolate and elucidate the chemical constituents in the roots of Rabdosia japonica.
  
  
  METHODS
  The constituents were extracted by ether and isolated by chromatography on silica gel and ODS. The structures were determined by IR, H NMR, 13C NMR and MS spectra respectively.
  
  
  RESULTS
  Four compounds were elucidated as glaucocalgxin A, oleanolic acid, ursolic acid and daucosterol.
  
  
  CONCLUSIONS
  Oleanolic acid and daucosterol were isolated from this plant for the first time.
authors.affiliation: Department of Chemistry, Norman Bethune University of Medical Sciences, Changchun 130021, Jilin, China.
authors.forename: Y R
authors.initials: YR
authors.lastname: Jin
authors.forename: M Y
authors.initials: MY
authors.lastname: Gui
authors.forename: B Z
authors.initials: BZ
authors.lastname: Wang
mesh_terms: D045786:Diterpenes, Kaurane; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D037602:Isodon / Q000737:chemistry*; D009828:Oleanolic Acid / Q000737:chemistry / Q000302:isolation & purification*; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012855:Sitosterols / Q000737:chemistry / Q000302:isolation & purification; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification; D000097245:Ursolic Acid
chemical_list: D045786:Diterpenes, Kaurane; D004365:Drugs, Chinese Herbal; D009828:Oleanolic Acid; D012855:Sitosterols; D014315:Triterpenes; D000097245:Ursolic Acid; C055124:glaucocalyxin A; C011015:lyoniside