Chemical constituents from twigs of Myricaria bracteata / 中草药

ABSTRACT

Objective: To investigate the chemical constituents from the twigs of Myricaria bracteata. Methods: The chemical constituents were isolated and purified by column chromatography. Their structures were identified on the basis of spectroscopic data, such as NMR, MS, and physicochemical properties. Results: Fourteen compounds were isolated from M. bracteata and identified as syringaresinol (1), (-)-lyoniresinol (2), (-)-isolariciresinol (3), N-trans-feruloyltyramine (4), N-trans-feruloyl-3-methoxytyramine (5), N-trans-feruloyl-2'-methoxytyramine (6), kaempferol-3-O-β-D-glucuronic acid methylester (7), quercetin-3-O-β-D-glucuronic acid methylester (8), quercitrin (9), rhamnocitrin (10), gallic acid (11), gallicin (12), E-caffeic acid (13), and E-ferulic acid (14). Conclusion: Compounds 1-6 and 14 are isolated from the plants of this genus for the first time. Compounds 7, 8, 12, and 13 are isolated from the twigs of M. bracteata for the first time.