[Studies on the flavonoid compounds of Rhododendron anthopogonoides].
OBJECTIVE
To investigate the flavonoid constituents of the Rhododendron anthopogonoides systematically.


METHODS
The chemical components were isolated by sephadex LH-20, polyamide and silica gel column chromatography. The chemical structures were elucidated on the basis of physic-chemical properties and spectral data.


RESULTS
Eight compounds were isolated and identified as: Quercetin (I), isorhamnetin (II), hyperoside (III), cacticin (IV), hirsutine (V), kaemferol-3-beta-D-galactoside (VI) myricetin-3-beta-D-Xyloside (VII), (6''-O-(4-Hydroxybenzoyl) hyperoside (VIII).


CONCLUSIONS
Compounds II, IV, V, VI, VII, and VIII were obtained from this plant for the first time. Compounds VII and VIII were separated from the Ericaceae plant for the first time.
Dai
Sheng-jun
SJ
Institute of Materia Medica, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100050, China.
Chen
Ruo-yun
RY
Yu
De-quan
DQ
D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D044948:Flavonols / 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; D029793:Rhododendron / Q000737:chemistry*
D000470:Alkaloids; D044948:Flavonols; C047368:3-methylquercetin; D011794:Quercetin; C038369:hirsutine