(+/-)10-deoxy-γ-rhodomycinone

(3R)-4-(1,4-dihydroxy-9,10-dioxo-9,10-dihydroanthracen-2-yl)-3,4-dihydroxy-3-methylbutanal

(8R,9R,10R)-9-O-benzyl-7,8,9,10-tetrahydro-6,8,9,10,11-pentahydroxy-9-methyl-5,12-naphthacenequinone

(8R,9R,10S)-9-O-benzyl-7,8,9,10-tetrahydro-6,8,9,10,11-pentahydroxy-9-methyl-5,12-naphthacenequinone

6,11-dihydroxy-8-methyl-7,10-dihydrotetracene-5,12-dione