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Note | Regular issue | Vol 75, No. 2, 2008, pp.419-426
Published online, 9th November, 2007
DOI: 10.3987/COM-07-11227
Three New Flavonol Glycosides from the Aerial Parts of Tetragonia tetragonoides

Kyu Ha Lee, Ki Myun Park, Kyung Ran Kim, Jongki Hong, Hak Cheol Kwon, and Kang Ro Lee*

*Natural Products Laboratory, College of Pharmacy, Sungkyunkwan University, Suwon 440-746, Korea


Three new flavonol glycosides (1-3) and three known lignan amides (4-6) were isolated from the MeOH extract of the aerial parts of Tetragonia tetragonoides. The chemical structures of the new compounds (1-3) were determined to be 6-methoxykaemferol-3-O-β-D-glucosyl (1’’’→2")-β-D- glucopyranosyl-(6""-(E)-caffeoyl)-7-O-β-D-glucopyranoside (1), 6,4’-dimethoxy kaemferol-3-O-β-D-glucosyl (1’"→2")-β-D-glucopyranosyl-(6""-(E)-caffeoyl)-7- O-β-D-glucopyranoside (2), 4’-methoxypatuletin-3-O-β-D-glucosyl (1’"→2") -β-D- glucopyranosyl-(6""-(E)-caffeoyl)-7-O-β-D-glucopyranoside (3) on the basis of extensive spectroscopic analyses (FAB-MS/MS, 1D and 2D NMR experiments).