Seven prenylphenols, antiarones C, D, E, F, G, H and I from the root bark of Antiaris toxicaria lesch

Three new phenylchalcones, antiarones C, D, and E along with four new prenylflavanones, antiarones F, G, H, and I were isolated from the root bark of Antiaris toxicaria Lesch. On the basis of spectral evidence, the structures of antiarones C-I were elucidated. A known compound, (±)-sigmoidin A was also isolated