1983 Volume 103 Issue 6 Pages 607-611
From the root of Scutellaria baicalensis GEORGI, two new flavonoids, III and IV, were isolated, together with 5-hydroxy-7, 8-dimethoxyflavone (I), norwogonin (II) and dihydrobaicalin (V). The structures of III and IV were established as 5, 7, 2'-trihydroxy-6-methoxyflavone and 5, 2'-dihydroxy-6, 7, 8-trimethoxyflavone, respectively.