Studies on the Constituents of Scutellaria Species. IV. On the Flavonoid Constituents of the Root of Scutellaria baicalensis GEORGI (4)

From the root of Scutellaria baicalensis GEORGI, six new flavonoids (II-VII) were isolated, together with 5, 7, 2'-trihydroxy-8-methoxyflavone (I). The structures of II-VII were established as shown in Chart 1.