9-(1-hydroxyethyl)-7,10-dihydro-6,11-dihydroxy-5,12-naphthacenedione

9-(1-hydroxyethyl)-6a,7,10,10a-tetrahydro-5,6,11,12-naphthacenetetraone

9-(1-hydroxyethyl)-9,8(8H)-epoxy-7,10-dihydro-6,11-dihydroxy-5,12-naphthacenedione

9-(1-hydroxyethyl)-7,8,9,10-tetrahydro-6,9,11-trihydroxy-5,12-naphthacenedione 1',9-acetonide

9-(1-hydroxyethyl)-9-hydroxy-6,11-dimethoxy-7,8,9,10-tetrahydro-5,12-naphthacenedione