title: [Study on the chemical constituents of the leaves of Ipomoea batatas].
abstract: OBJECTIVE
  To study the chemical constituents of the leaves of Ipomoea batatas.
  
  
  METHODS
  The constituents were isolated and purified by silica gel and TLC, and their structures were elucidated by spectroscopy.
  
  
  RESULTS
  Six compounds were isolated from 90% ethanol extract and identified as tetracosane (I ), myristic acid (II), beta-sitosterol (II), beta-carotene (IV), daucosterol (V) and quercetin (VI).
  
  
  CONCLUSIONS
  Compounds I, II, IV, V are isolated from this plant for the first time.
authors.affiliation: College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, China. msplly@163.com
authors.forename: Ling-Yuz
authors.initials: LY
authors.lastname: Lv
authors.forename: Gao-Feng
authors.initials: GF
authors.lastname: Shi
authors.forename: Chun-Lei
authors.initials: CL
authors.lastname: Li
authors.forename: Xue-Zhe
authors.initials: XZ
authors.lastname: Han
authors.forename: Qiu-Nan
authors.initials: QN
authors.lastname: Lv
mesh_terms: D000473:Alkanes / Q000737:chemistry / Q000302:isolation & purification*; D027723:Ipomoea batatas / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D019814:Myristic Acid / Q000737:chemistry / Q000302:isolation & purification*; D018515:Plant Leaves / Q000737:chemistry*; D011794:Quercetin / Q000737:chemistry / Q000302:isolation & purification; D012855:Sitosterols / Q000737:chemistry / Q000302:isolation & purification; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000473:Alkanes; D012855:Sitosterols; D019814:Myristic Acid; D011794:Quercetin; C011015:lyoniside; C514857:tetracosane