Studies on the constituents of Scutellaria species. XIV. On the constituents of the roots and the leaves of Scutellaria alpina L.

From Scutellaria alpina L., two new flavones (I and II) were isolated, together with eighteen known flavonoids. The structures of I and II were shown to be 5, 2', 6'-trihydroxy-6, 7, 8-trimethoxyflavone and 5, 5", 6, 6", 7, 7"-hexahydroxy-8, 8"-biflavone(8, 8"-bibaicalein) on the basis of the chemical and spectral data. Compound I has already been...