Benzo[]naphtho[2,1-]furans and 2-Phenylnaphthalenes from .

Three new benzo[]naphtho[2,1-]furans, usambarins A-C (-), five new 2-phenylnaphthalenes, usambarins D-H (-), a new flavan (), and a new phenyl-1-benzoxepin () as well as two known compounds ( and ) were isolated from the extract of the stem and roots of (Moraceae). The structures were deduced using NMR spectroscopic and mass spectrometric analyses, and those of compounds and were confirmed by X-ray crystallography. Usambarin D () demonstrated moderate antibacterial activity (MIC 9.