Sigmoidin D: A new prenylated flavanone from erythrina sigmoidea

Extensive studies in our laboratories of the neutral components of the genus Erythrina have resulted in the isolation of a number of new flavonoids (1–4). We now wish to report the isolation and stereostructural elucidation of a new prenylated flavonoid, sigmoidin D (1), from the Cameroonian medicinal plant Erythrina sigmoidea Hua. (Leguminosae). © 1986, American Chemical Society. All rights reserved.