The chemical constituents of Rhododendron ovatum Planch.
OBJECTIVE
To study the chemical constituents of Rhododendron ovatum Planch.


METHODS
The chemical constituents were isolated and purified by silica gel column chromatography and identified on the basis of their physiochemical and spectral data.


RESULTS
Seven compounds were isolated and identified. Their structures were established as 3,5,7-trihydroxylchromone 3-O-beta-D-xylopyranoside (I), taraxerol (II), beta-sitosterol (III), betulinic acid (IV), quercetin (V), quercetin-3-O-alpha-L-rhamnopyranoside (VI), and D-glucose (VII).


CONCLUSIONS
Compound I is a new compound. Compounds II-VII were isolated from this plant for the first time.
Feng
Zi-ming
ZM
Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
Wang
Ying-hong
YH
Zhang
Pei-cheng
PC
D002839:Chromans / Q000737:chemistry / Q000302:isolation & purification*; D006027:Glycosides; D008968:Molecular Conformation; D015394:Molecular Structure; D009005:Monosaccharides / Q000737:chemistry / Q000302:isolation & purification*; D009828:Oleanolic Acid / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011794:Quercetin / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification; D029793:Rhododendron / Q000737:chemistry*
C509384:3,5,7-trihydroxylchromone 3-O-beta-D-xylopyranoside; D002839:Chromans; D006027:Glycosides; D009005:Monosaccharides; C509385:quercetin-3-O-alpha-L-rhamnopyranoside; D009828:Oleanolic Acid; D011794:Quercetin; C005802:taraxerol