title: A new picfeltarraenone glycoside from Picria fel-terrae.
abstract: OBJECTIVE
  To investigate the chemical constituents from Picria fel-terrae Lour.
  
  
  METHODS
  Column chromatography techniques were used to isolate the chemical constituents, physico-chemical constants and spectroscopic analysis were employed for structural elucidation. Results Two triterpenoids named picfeltarraenone I (1) and picfeltarraenin XI (2) were isolated, and their structures were established to be 3,11,22-trioxo-16alpha-hydroxy-(20S,24)-epoxy-cucurbit-5,23-diene (1) and 3,11,22-trioxo-16alpha-hydroxy-(20S,24)-epoxy-cucurbit-5, 23-diene-2beta-O-beta-D-glucopyranoside (2), respectively.
  
  
  CONCLUSIONS
  Compound 2 is a new compound, the 13CNMR data of compound 1 is reported for the first
authors.affiliation: Guilin Sanjin Pharmaceutical Co. Ltd., Guilin 541004, China. Sanjin@gl.gx.cninfo.net
authors.forename: Jie-ming
authors.initials: JM
authors.lastname: Zou
authors.forename: Li-sheng
authors.initials: LS
authors.lastname: Wang
authors.forename: Ya-jian
authors.initials: YJ
authors.lastname: Guo
authors.forename: Zheng
authors.initials: Z
authors.lastname: Wang
authors.forename: Rui-zhi
authors.initials: RZ
authors.lastname: Wang
mesh_terms: D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D008968:Molecular Conformation; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*; D028083:Scrophulariaceae / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D005960:Glucosides; D014315:Triterpenes; C506633:picfeltarraenin XI; C506634:picfeltarraenone I