Two new flavonoid glycosides from the halophyte Limonium franchetii

Abstract

Two new flavonoid glycosides, named quercetin-3-O-(2″-O-tigloyl)-α-l-rhamnopyranoside (1) and quercetin-3-O-(3″-O-tigloyl)-α-l-rhamnopyranoside (2), together with 10 known flavonoids (3–12), were isolated from the whole plant of the halophyte Limonium franchetii. Their structures were elucidated on the basis of extensive spectroscopic analysis including 2D NMR and HR-EI-MS. In addition, primary bioassays showed that compound 1 had moderate cytotoxic activity against rat C6 glioma cell lines.