title: The structure of ekatetrone, a metabolite of strains of Streptomyces aureofaciens.
abstract: The structure of ekatetrone has been determined from physico-chemical data obtained using the natural compound, its derivatives and products of degradation reactions. Ekatetrone was found to be the lactone of 1,8-dihydroxy-2-(1'-hydroxy-2'-carbamoyl)ethyl-9,10-anthraquinone-3-acetic acid (I). It is proposed that ekatetrone is related, biogenetically, to protetrone.
mesh_terms: D000880:Anthraquinones / Q000302:isolation & purification; D000903:Antibiotics, Antineoplastic / Q000302:isolation & purification*; D055598:Chemical Phenomena; D002621:Chemistry; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D010084:Oxidation-Reduction; D013304:Streptomyces aureofaciens / Q000032:analysis* / Q000378:metabolism; D013754:Tetracyclines / Q000378:metabolism
chemical_list: D000880:Anthraquinones; D000903:Antibiotics, Antineoplastic; D013754:Tetracyclines