Antitumoral and antileishmanial dioncoquinones and ancistroquinones from cell cultures of Triphyophyllum peltatum (Dioncophyllaceae) and Ancistrocladus abbreviatus (Ancistrocladaceae)

Seven natural, highly oxygenated 1,4-naphthoquinones were isolated from solid callus cultures of Triphyophyllum peltatum and Ancistrocladus abbreviatus, along with the already known natural products plumbagin, droserone, malvone A, and nepenthone A.