Two new flavonoid glycosides from the halophyte Limonium franchetii.

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 halophyteLimonium 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 compound1had moderate cytotoxic activity against rat C6 glioma cell lines. [ABSTRACT FROM PUBLISHER]