The Chemical Constituents of Australian Flindersia Species. II. Braylin and Brayleyanin

Abstract

Two substances, braylin, C₁₅H₁₄O₄, and brayleyanin, C₂₀H₂₄O₄, have been isolated from the bark of F. brayleyana F. Muell. By degradation and synthesis they have been proved to be 6-methoxy -7, 8-(2',2'-dimethylpyrano-5?,6?)coumarin and 6-methoxy-7-(γγ-dimethylallyloxy)-8-(γγ-dimethylallyl)coumarin respectively.