Submitted to: Heterocycles
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 6/18/2009
Publication Date: 6/19/2009
Citation: Xu, W., Jacob, M.R., Agarwal, A.K., Clark, A.M., Liang, Z., Li, X. 2009. Flavonol Glycosides from Gaura Biennis. Heterocycles. 78:2541-2548. Interpretive Summary: The attched manuscript describes the isolation and structure elucidation of three new and eight known flavonol glycoside from a native American plant, Gaura biennis. It will be submitted for publication in Heterocycles.
Technical Abstract: Phytochemical investigation of the native American plant Gaura biennis led to the isolation of three new flavonol glycosides (1-3), along with eight known ones. Their structures were established primarily by spectroscopic data as quercetin 3-O-(2"-O-a-L-rhamnopyranosyl-6"-O-E-p-coumaroyl)-ß-D- glucopyranoside (1), kaempferol 3-O-(2"-O-a-L-rhamnopyranosyl-6"-O-E-p-coumaroyl)-ß-D-gluco- pyranoside (2) and quercetin 3-O-(2"-O-a-L-rhamnopyranosyl-6"-O-Z-p-coumaroyl)-ß-D-glucopyrano- side (3). It is noted that SciFinder® has incorrectly assigned the structure of 2 to a compound (CA registry #78510-18-6) whose correct structure is kaempferol 3-O-(2"-O-E-p-coumaroyl-6"-O-a-L-rhamno- pyranosyl-O-E-p-coumaroyl)-ß-D-glucopyranoside.