FLAVONOL GLYCOSIDES FROM THE NATIVE AMERICAN PLANT .

Phytochemical investigation of the native American plant led to the isolation of three new and eight known flavonol glycosides. The structures of the new compounds were established primarily by spectroscopic data as quercetin 3--(2″--α-l-rhamnopyranosyl-6″----coumaroyl)-β-D-glucopyranoside (), kaempferol 3--(2″--α-l-rhamnopyranosyl-6″----coumaroyl)-β-d-gluco-pyranoside () and quercetin 3--(2″--α--rhamnopyranosyl-6″----coumaroyl)-β-D-glucopyrano-side ().