[Studies on chemical constituents from roots of Polygonum amplexicaule].
OBJECTIVE
To investigate the chemical constituents in the roots of Polygonum amplexicaule var. sinense.


METHODS
The compounds were isolated by column chromatography on silica gel and Sephadex LH-20. The structures were identified by means of IR, 1H-NMR, 13C-NMR and MS analyses.


RESULTS
Eight compounds were isolated and identified as friedelin (1), beta-sitosterol (2), simiarenone (3), angelicin (4), psoralen (5), palmitic acid (6), (-)-epicatechin (7), and quercetin (8), respectively.


CONCLUSIONS
All compounds were isolated from this species for the first time and compounds 1, 3-6 were obtained from this genus for the first time.
Ren
Hengchun
H
Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100093, China.
Wan
Dingrong
D
Zou
Zhongmei
Z
D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D009930:Organic Chemicals / Q000032:analysis / Q000302:isolation & purification; D018517:Plant Roots / Q000737:chemistry*; D028502:Polygonum / Q000737:chemistry*
D009930:Organic Chemicals