title: [Study on the chemical constituents of two lichen plants from Meng Mountain].
abstract: OBJECTIVE
  To investigate the chemical constituents of the lichen plants Parmelia tinctorum and Parmelia nimandairana collected from Meng Mountain in Shandong province.
  
  
  METHODS
  Various chromatographic techniques were used to isolate and purify the constituents and their structures were elucidated by means of spectral evidence and physiochemical properties.
  
  
  RESULTS
  Four compounds were isolated from Parmelia tinctorum and identified as: lecanoric acid (I), evernic acid (II), ethyl orsellinate (III) and 3,5-dihydroxytoluene (IV). Two compounds were isolated from Parmelia nimandairana and identified as: usnic acid (V) and salazinic acid (VI).
  
  
  CONCLUSIONS
  Compounds V and VI are isolated from Parmelia nimandairana for the first time.
authors.forename: Hai-Juan
authors.initials: HJ
authors.lastname: Zhang
authors.forename: De-Quan
authors.initials: DQ
authors.lastname: Zhu
authors.forename: Li-Yan
authors.initials: LY
authors.lastname: Sun
authors.forename: Zhao-Hui
authors.initials: ZH
authors.lastname: Ge
authors.forename: Jun-Jie
authors.initials: JJ
authors.lastname: Xu
authors.forename: Shang-Cai
authors.initials: SC
authors.lastname: Feng
mesh_terms: D001572:Benzofurans / Q000737:chemistry / Q000302:isolation & purification*; D002681:China; D002851:Chromatography, High Pressure Liquid; D062385:Hydroxybenzoates / Q000737:chemistry / Q000302:isolation & purification; D007783:Lactones / Q000737:chemistry / Q000302:isolation & purification*; D008011:Lichens / Q000737:chemistry* / Q000145:classification; D015394:Molecular Structure; D012118:Resorcinols / Q000737:chemistry / Q000302:isolation & purification; D012459:Salicylates / Q000737:chemistry / Q000302:isolation & purification*; D012997:Solvents / Q000737:chemistry
chemical_list: D001572:Benzofurans; D062385:Hydroxybenzoates; D007783:Lactones; D012118:Resorcinols; D012459:Salicylates; D012997:Solvents; C116675:salazinic acid; C073339:usnic acid; C008263:lecanoric acid; C005282:orcinol; C050847:evernic acid