Main Flavonoids of Tilia argentea DESF.ex DC.Leaves

摘要

Kaempferol 3,7-O-alpha-L-dirhamnoside(I)and quercetin 3,7-O-alpha-L-dirhamnoside(II)were isolated from the leaves of Tilia argentea(Tiliaceae).The structure elucidation of the isolated compounds was performed by spectroscopic techniques ~1H-NMR,~(13)C-NMR,HMBC,CHSHF,DEPT and High Resolution FAB-MS).These 2 flavonoids are determined to be the main flavonoids of the leaves and are recommended as indicators for the adulteration of linden inflorescence with leaves known to possess weak healing activity.