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Four new prenylated flavanones, abyssinone-V 4'-methyl ether (1) and abyssinoflavanones IV (2), V (3), and VI (4), have been isolated as minor flavanones from the African medicinal plant, Erythrina abyssinica, together with a known flavanone, sigmoidin D. The structure elucidation of compounds 1-4 by spectroscopic studies is described.

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Three new prenylated flavanones, abyssinin I (1), II (2), and III (3), have been isolated from the African medicinal plant Erythrina abyssinica, together with six known flavanones. The structural elucidation of 1−3 by spectroscopic studies is described.