[Studies on the flavonoids in stem of Rhododendron anthopogonoide II].
OBJECTIVE
To further investigate the flavonoids of Rhododendron anthopogonoide.


METHODS
The compounds were isolated and purified by Sephadex LH-20, polyamide and silica gel column chromatography. Their chemical structures were elucidated on the basis of physicochemical properties and spectral data.


RESULTS
Six compounds were isolated and identified as: taxifolin (I), guaijaverin (II), reynoutrin (III), quercitrin (IV), polystachoside (V) and quercetin-4'-O-beta-D-galactoside (VI).


CONCLUSIONS
For the first time, compound VI was separated from Ericaceae plant, compounds II and V were isolated from Rhododendron plant, and compounds I and II were obtained from this plant.
Dai
Sheng-jun
SJ
School of Pharmceutical Science, Yantai University, China.
Yu
De-quan
DQ
D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D044948:Flavonols / Q000737:chemistry / Q000302:isolation & purification; D005697:Galactosides / Q000737:chemistry / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011794:Quercetin / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification; D029793:Rhododendron / Q000737:chemistry*
D005419:Flavonoids; D044948:Flavonols; D005697:Galactosides; C519462:guaijaverin; C519460:quercetin-4'-O-beta-D-galactoside; C012526:quercitrin; D011794:Quercetin; C003377:taxifolin