title: [Chemical Constituents from Usnea longgisima, a Traditional Mongolian Medicine(II)].
abstract: OBJECTIVE
  To study the chemical constituents of traditional Mongolian medicine Usnea longissima.
  
  
  METHODS
  The compounds were isolated and purified by the methods of solvent extraction and chromatographic technique, and their structures were identified on the basis of the analyses of spectral data.
  
  
  RESULTS
  Three compounds were obtained and identified as 4-hydroxy-2-[ (2-hydroxy-4-methoxy-6-methylbenzoyl) oxy]-6-methylbenzoic acid (1), dibutyl phthalate (2) and diisobutyl phthalate (3).
  
  
  CONCLUSIONS
  Compound 1 is a new compound and named as isoevernic acid, compounds 2 and 3 are isolated from Usnea longissima for the first time.
authors.forename: Xi-na-mu-ji-la
authors.initials: XN
authors.lastname: La
authors.forename: Hong
authors.initials: H
authors.lastname: Liang
authors.forename: Gen-na
authors.initials: GN
authors.lastname: Ba
authors.forename: Ba-da-la-hu
authors.initials: BD
authors.lastname: Tai
mesh_terms: D056785:Medicine, Mongolian Traditional; D064209:Phytochemicals / Q000032:analysis*; D010946:Plants, Medicinal / Q000737:chemistry*; D020949:Usnea / Q000737:chemistry*
chemical_list: D064209:Phytochemicals