[Studies on chemical constituents of Veronica lina riifolia Pall. ex Link. sub. dilatata (Nakai et Kitagawa) Hong]

Abstract

A new flavonoid glycoside, named linariifolioside, C29H32O17 with mp at 232-234 degrees C (dec.), was isolated from the alcohol extract of the dried whole herb of Veronica linariifolia Pall. ex Link sub. dilatata (Nakai et Kitagawa) Hong. Based on spactral (IR, UV, 1HNMR, 13CNMR and FAB-MS) analysis and hydrolysis products its structure was identified as luteolin-7-O-6"'-O-acetyl-beta-D-glucosyl-(1----2)-beta-D-glucoside (I). In addition, four known compounds, luteolin-7-O-beta-D-glucosyl-(1----2)-beta-D-glucoside (II), apigenin-7-O-alpha-L-rhamnoside (III), luteolin (IV), and apigenin (V) were isolated from the same fraction and identified. These compounds were obtained for the first time from this plant.