rac-(7R,7aR,8aS,12aR,13aS,13bS)-2,2-di-tert-butyl-7-((tert-butyldimethylsilyl)oxy)-10-((4-methoxyphenyl)sulfinyl)-5',5'-dimethyl-7,7a,8,8a,9,10,12,12a,13a,13b-decahydro-11H-spiro[tetraceno[1,12-de][1,3,2]dioxasiline-13,2'-[1,3]dioxan]-11-one

Acetic acid (9R,10S,10aR)-4-acetoxy-6-(3-acetoxy-2,2-dimethyl-propoxy)-8-acetyl-9,10-dihydroxy-9,10,10a,11-tetrahydro-naphthacen-5-yl ester

12a-deoxypillaromycinone pentaacetate

2-acetyl-10-acetoxy-3,4-(isopropylidenedioxy)-12,12-(2',2'-dimethylpropane-1',3'-diyldioxy)-6-hydroxy-11-oxo-3(S*),4(R*),4a(S*),5,5a(S*),6(S*),11a(R*),12,12a(S*)-decahydronaphthacene

2-acetyl-10,11-dihydroxy-6-(tert-butyldimethylsiloxy)-3,4-(isopropylidenedioxy)-12,12-(2',2'-dimethylpropane-1',3'-diyldioxy)-3(S*),4(R*),4a(S*),5,5a(S*),6(S*),11(R*),11a(R*),12,12a(S*)-decahydronaphthacene