[Studies on chemical constituents from roots of Polygonum amplexicaule].
Ключови думи
Резюме
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.