title: [Study on chemical constituents of Hemistepta lyrata Bunge].
abstract: OBJECTIVE
  To separate and identify the chemical constituents of the whole plant of Hemistepta lyrata Bunge.
  
  
  METHODS
  Compounds wese separated with chromatography and their chemical strucrures were elucidated with UV, IR, EIMS, FABMS, ESIMS, 1HNMR, 13CNMR HMQC and HMBC spectral methods.
  
  
  RESULTS
  Five compounds were isolated from the plant. They were identified as apigenin I, apigenin-7-O-beta-D-lutinoside II, acacetin-7-O-beta-D-lutinoside III, astragalin IV, hemislienoside V.
  
  
  CONCLUSIONS
  These compounds were isolated from this plant for the first time, and compound V is a new one.
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100094, China.
authors.forename: Y L
authors.initials: YL
authors.lastname: Ren
authors.forename: J S
authors.initials: JS
authors.lastname: Yang
mesh_terms: D015107:4-Butyrolactone / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification*; D047310:Apigenin; D019659:Asteraceae / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D044949:Kaempferols / Q000737:chemistry / Q000302:isolation & purification; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*
chemical_list: D005419:Flavonoids; D005960:Glucosides; D044949:Kaempferols; C481181:hemislienoside; D047310:Apigenin; C001579:astragalin; D015107:4-Butyrolactone