<jats:title>Abstract</jats:title><jats:p>Four naphthoquinones together with one known naphthoquinone were isolated from the stems of <jats:italic>Diospyros maritima</jats:italic> Blume. Four naphthoquinones were elucidated as 2,2′‐, 2,3′‐, 3,2′‐, and 3,3′‐diethoxy‐isodiospyrins, respectively, on the basis of spectral properties.