Study On The Constituents From Maackia Amurensis Rupr.et Maxim.

Maackia amurensis Rupr. et Maxim., the plant of Leguminosae, has the antioxidant, antiradical, antitumour and anti-inflammation activities, being used to treat injuries from falls, bruise and gall, rheumatoid arthritis, ulcer and so on.Seventeen compounds were separated from the EtOAc fraction of 70% ethanol extraction of M. amurensis by repeated silica gel column chromatography, Sephadex LH-20 column chromatography, recrystallization and so on.Fourteen compounds' structures were identified on the basis of their physico-chemical properties and spectroscopic analysis. The compounds are shown as follows: tectorigenin(MAE2), genistein (MAE3), afromosin(MAE4), prunetin(MAE5), formononetin (MAE6), ononin 6"-O-acetate (MAE7), maackiaflavanone (MAE8), maackiain 3-O(6'-O-malonyl-β-D-glucopyranoside) (MAE10), maackiain 3-O-(6'-O-acetyl-β-D-glucopyranoside) (MAE11), di-O-methyldaidzein(MAE12), maackiain (MAE13), β-sitosterol (MAE15), tectoridin (MAE16) and afromosin 7-O-β-D-glucopyranoside (MAE17). Compounds MAE5, 7, 10 and 11 were isolated from this genus for the first time, and compounds MAE8, 12 and 13 were isolated from this species for the first time.