title: [Studies on the chemical constituents of Rabdosia rubescens].
abstract: OBJECTIVE
  To study the chemical constituents from Rabdosia rubescens.
  
  
  METHODS
  Compounds were isolated by Silica gel,Sephadex LH-20 and ODS column chromatographies, their strctures were identified by physicochemical property and NMR, MS.
  
  
  RESULTS
  Eight constituents were identified as phaeophytin a (1), phaeophytin b (2), 17c-ethoxypheaophorbide a (3), 17c-ethoxyphea ophorbide b (4), oleanolic acid (5), physcion (6), emodin-8-O-beta-D-glucopyranoside (7), isorhamnetin (8).
  
  
  CONCLUSIONS
  Compounds 1-4, 6 and 7 are obtained for the first time from this plant.
authors.affiliation: School of Life Science and Technology, Beijing Institute of Technology, Beijing 100081, China. lvfangbeijing@163.com
authors.forename: Fang
authors.initials: F
authors.lastname: Lv
authors.forename: Xiao-Jie
authors.initials: XJ
authors.lastname: Xu
mesh_terms: D002734:Chlorophyll / Q000737:chemistry / Q000302:isolation & purification*; D004642:Emodin / Q000737:chemistry / Q000302:isolation & purification*; D044948:Flavonols / Q000737:chemistry / Q000302:isolation & purification; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification; D037602:Isodon / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D009828:Oleanolic Acid / Q000737:chemistry / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*; D011794:Quercetin / Q000031:analogs & derivatives
chemical_list: D044948:Flavonols; D005960:Glucosides; C406457:phaeophytin a; C047368:3-methylquercetin; D002734:Chlorophyll; D009828:Oleanolic Acid; D011794:Quercetin; D004642:Emodin