[Studies on chemical constituents from Polygonum macrophyllum].
OBJECTIVE
To study the chemical structures from Polygonum macrophyllum D. Don.


METHODS
To isolate the constituents by reverse phase chromatography and characterize their structures by the analysis of chemical property and spectral data.


RESULTS
Six compounds were isolated from the 70% acetone extract from the complete herb of P. macrophyllum. Their structures were elucidated as (-)-epicatechin-5-O-beta-D-glucopyranoside (I), (+)-catechin-7-O-beta-D-glucopyranoside (II), 1-(3-O-beta-D-glucopyranosyl 4,5-dihydroxy-phenyl)-ethanone (III) (-)-epicatechin (IV), chlorogenic acid (V) and gallic acid (VI).


CONCLUSIONS
Compounds I-VI were isolated from the plant for the first time.
Wang
Silei
S
Lanzhou Medical College, Lanzhou 730000.
Wang
Dinghai
D
Feng
Shilan
S
D002392:Catechin / Q000302:isolation & purification*; D002726:Chlorogenic Acid / Q000302:isolation & purification*; D002855:Chromatography, Thin Layer / Q000379:methods; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D005707:Gallic Acid / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*; D028502:Polygonum / Q000737:chemistry*; D013055:Spectrophotometry, Infrared / Q000379:methods
D004365:Drugs, Chinese Herbal; D002726:Chlorogenic Acid; D005707:Gallic Acid; D002392:Catechin