[Studies on the chemical constituents in ethyl acetate extraction from the fruit of Polygonum orientale].
OBJECTIVE
To study on the chemical constituents in ethyl acetate extraction from Polygonum orientale.


METHODS
By repeated silica gel chromatographic seperation and spectral analysis the structures were determined.


RESULTS
Seven compounds were isolated and identified from Polygonum orientale. They were 3,5,7-trihydrochromone (I), kaempferol (II), 5,7,4'-trihydroxydihydroflavonol (III), dihydroquercetin (IV), quercetin (V), p-hydroxyphenylethanol ferulate (VI), p-hydroxyphenylethanol-p-coumaric (VII).


CONCLUSIONS
Compounds II, III are isolated from this plant for the first time.
Xie
Zhou-tao
ZT
Xinhua Hospital Pharmacy Ministry of Hubei Province, Wuhan 430015, China. benza202@163.com
Hu
Jin
J
D000085:Acetates; D044948:Flavonols / Q000737:chemistry / Q000302:isolation & purification*; D005638:Fruit / Q000737:chemistry; D044949:Kaempferols / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*; D028502:Polygonum / Q000737:chemistry*; D011794:Quercetin / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification; D013056:Spectrophotometry, Ultraviolet
D000085:Acetates; D044948:Flavonols; D044949:Kaempferols; C006552:kaempferol; C007650:ethyl acetate; D011794:Quercetin; C003377:taxifolin