Studies on the Water-soluble Constituents of the Roots of Scutellaria baicalensis GEORGI (Wogon)

Abstract

From the roots of S. baicalensis Georgi, 3 new flavonoids, III, IV and V were isolated along with dihydrooroxylin A and chrysin. The chemical structures of III, IV and V were established as 2'',5,8-trihydroxy-7-methoxyflavone, 2'',5,8-trihydroxy-6,7-dimethoxyflavone and 4'',5,7-trihydroxy-6-methoxyflavanone, respectively, by chemical and physical analyses.