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Components of Root Bark of<i>Cudrania tricuspidata</i>2. Structures of Two New Isoprenylated Flavones, Cudraflavones A and B.
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1984
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Root BarkCudraflavone BBotanyBiochemistryNew Isoprenylated FlavonesCudraflavones AMedicineNatural SciencesPhytopharmacologyPhytochemicalCudrania TricuspidataPhytochemistryPharmacologyPolyphenolicsOxidative Stress
Two new isoprenylated flavones, cudraflavones A and B were isolated from the root bark of CUDRANIA TRICUSPIDATA (Carr.) Bur. (Japanese name "Hariguwa", Moraceae). The structures of cudraflavones A and B were shown to be 1 and 2, respectively, on the basis of spectral data. Photo-oxidative cyclization occurred with cudraflavone B leading to the formation of a hydroperoxide possessing a dihydrooxepin ring.