Author's Organization:Faculty of Pharmaceutical Sciences, Chiba University Faculty of Pharmaceutical Sciences, Chiba University Chemical Analysis Center, Chiba University Faculty of Pharmaceutical Sciences, Chiba University
The spectroscopic structural elucidation of toddacoumaquinone (2), a unique coumarin-naphthoquinone dimer, isolated from Toddalia asiatica (L.) Lam. (T. aculeata Pers.) is described.