Journal of Natural Products
Sigmoidin F, a new prenylated flavonoid from Erythrina sigmoidea.
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Sigmoidin F, a new prenylated flavanone, as well as abyssinone IV and 5,7,4'-trihydroxy-3'-methoxy-5'-(1"-prenyl) flavonone have been isolated from the stem and bark of Erythrina sigmoidea. The structure of 1 has been confirmed by a combination of 1H-nmr and other spectroscopic techniques.