Studies on Flavonoids from Leaves of Lindera aggregata (Sims) Kosterm

The leaves of Wuyaku are widely used in China as an anti-inflammation and anti-rheumatesis Chinese herb.To study the antibacterial and anti-inflammatory constituents of the leaves of Lindera aggrega(Sims)Kosterm,seven compounds were isolated,the structures were elucidated by chemical and spectroscopic methods as follows:quercetin(1),quercetin-3-O-rhamnoside(2),kampferol-3-O-L-arabinopyranoside(3),quercetin-3-O-β-D-galactopyranoside(4),isorhamnetin-3-O-[β-D-glucopyranosyl-(6→1)- rhamnoside](5),kampferol-3-O-α-glicurinoside(6),daucosterol(7).Compounds 1,2,3,4 were obtained from the leaves of Lindera aggregata,5,6 were from the genus of lindera for the first time.