[Chemical constituents of Cynanchum chinense R. Br].
OBJECTIVE
To investigate the chemical constituents in the aerial part of Cynanchum chinense.


METHODS
The chemical constituents were extracted with solvent and separated by column chromatography. The structures were identified by spectral methods:


RESULTS
The structures were identified as 7-O-alpha-L-rhamnopy-ranosyl-kaempferol-3-O-alpha-L-rhamnopyranoside, 7-O-alpha-L-rhamnopy-ranosyl-kaempferol-3-O-beta-D-glucopyranoside and 7-O-alpha-L-rhamnopyr-anosylkaempferol-3-O-beta-D-glucopyranosyl(1-->2)- beta-D-glucopyranoside.


CONCLUSIONS
All the three compounds were separated from C. chinense for the first time.
Li
C
C
Department of Pharmacy, Lanzhou Medical College, Lonzhou 730000.
Gou
Z
Z
Yang
Y
Y
Zhang
C
C
D031105:Cynanchum / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D044949:Kaempferols; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*
D005419:Flavonoids; D044949:Kaempferols; C006552:kaempferol