2-(10,12-Dihydroxy-3,6,11-trioxo-1,4-dihydronaphtho[2,3-g]isochromen-1-yl)acetamide

Ekatetrone is an organic heterotetracyclic compound that is 1,8-dihydroxy-9,10-anthraquinone which is substituted at position 2 and 3 by 3-amino-1-hydroxy-3-oxopropyl and carboxymethyl groups, respectively, in which the hydroxy group beta- to the carboxamide has undergone formal condensation with the carboxy group to give the corresponding delta-lactone. Isolated from various strains of Kitasatospora aureofaciens (Streptomyces aureofaciens), it inhibits the growth of Ehrlich ascites carcinoma in vitro. It has a role as an antineoplastic agent and a bacterial metabolite. It is a primary carboxamide, a delta-lactone, an anthraquinone, a member of phenols and an organic heterotetracyclic compound.