A New Diterpenoid Glucoside from Roots of Rabdosia excisa

摘要

A new ent-kaurane diterpenoid glucoside, 7 alpha,14 beta,15 alpha-trihydroxy-ent-kaur-16-ene-1 alpha-O-beta-Dglucopyranoside (1), along with three known compounds, quercetin-3-O-beta-D-glucoside (2), kaempferol-3- O-beta-D-glucopyranoside (3), and kaempferol-3-O-rutinoside (4), was isolated from the roots of Rabdosia excisa. The structures were elucidated on the basis of spectral analysis. Compounds 3 and 4 were isolated from this plant for the first time.