Studies on the flavone glycosides from the extract of Erigeron breviscapus

Abstract

Four flavone glycosides were isolated from the extract of Erigeron breviscapus (Vant.) Han.-Mazz. and identified by spectral analyses as scutellarin (I), 5, 6, 4^-trihydroxy flavone-7-O-beta-D-galactopyranosiduronic acid (II), 4^-hydroxy baicalein-7-O-beta3-D-glucopyranosiduronic acid methyl ester (III), baicalein-7-O-beta-D-glucopyranoside (IV). Compound II was new and compound IV was isolated from this plant for the first time.