Flavonoids Syntheses. III. Syntheses of Flavones Isolated from Scutellaria rehderiana

Abstract

The structures of two new flavones isolated from Scutellaria rehderiana, named rehderianin I and viscidulin III, were revised 2', 5, 5'-trihydroxy-7, 8-dimethoxyflavone and 3', 5, 6', 7-tetrahydroxy-2', 8-dimethoxyflavone, respectively, based on a comparison with the synthesized flavones.