Two new chromanone acids from the stem bark of Lauterb.

Three chromanone acids were isolated from the stem bark of Lauterb. Among them are two new chromanone acids, calopeekelioic acids A () and B (), along with calolongic acid (), Their structures were established by analyzing a combination of HRESIMS, 1 D, and 2 D NMR spectra. Chromanone acids were evaluated for their antiplasmodial activity against strain 3D7.