title: [Chemical Constituents of Cynanchum auriculatum].
abstract: OBJECTIVE
  To study the chemical constituents of Cynanchum auriculatum.
  
  
  METHODS
  Nine compounds were isolated by silica gel, RP-18 column chromatography and Sephadex LH20.
  
  
  RESULTS
  Nine compounds were isolated from the ethanol extract of Cynanchum auriculatum. Their structures were determined as sarcosin-3-O-β-cymaropyranoside (1), cynotophylloside B (2), clemaphenol A (3), deacetylmetaplexigenin (4), methyl-2,6-dideoxy-3-O-methyl-β-D-arabino-hexopyranosyl- (1 --> 4) -6-deoxy-3-O-methyl-α-L-ribo-hexopyranoside (5), trans-p-hydroxy cinnamic methyl ester (6), cyclo(D-Pro-D-Leu) (7), 3α-hydroxy-5α ,6α-epoxy-7-megastigmen9-one (8) and ferulic acid methyl ester (9) on the basis of spectral analysis.
  
  
  CONCLUSIONS
  Compounds 3, 5 and 6 - 9 are isolated from Cynanchum auriculatum for the first time.
authors.forename: Jang-bo
authors.initials: JB
authors.lastname: He
authors.forename: Jing
authors.initials: J
authors.lastname: Jia
authors.forename: Hong-ping
authors.initials: HP
authors.lastname: Gou
authors.forename: Xue-mei
authors.initials: XM
authors.lastname: Zhang
authors.forename: Xi-song
authors.initials: XS
authors.lastname: Miao
authors.forename: Fang
authors.initials: F
authors.lastname: He
authors.forename: Jian
authors.initials: J
authors.lastname: Tao
mesh_terms: D031105:Cynanchum / Q000737:chemistry*; D064209:Phytochemicals / Q000032:analysis* / Q000302:isolation & purification; D010936:Plant Extracts / Q000737:chemistry*
chemical_list: D064209:Phytochemicals; D010936:Plant Extracts