10-hydroxy-1-acetoxy-8,9-(di-tert-butylsilylenedioxy)-1(R*),4,4a(S*),9(R*),9a(S*),10(S*)-hexahydroanthracene

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

2-acetyl-10,11-diacetoxy-3,4-(isopropylidenedioxy)-12-(3'-acetoxy-2',2'-dimethylpropan-1'-yloxy)-3(S*),4(R*),4a(S*),5-tetrahydronaphthacene

1-acetoxy-8,9-(di-tert-butylsilylenedioxy)-10-oxo-1(R*),4,4a(S*),9(R*),9a(S*),10-hexahydroanthracene

10-(tert-butyldimethylsiloxy)-8,9-(di-tert-butylsilylenedioxy)-1-oxo-1,4,4a(S*),9(R*),9a(R*),10(S*)-hexahydroanthracene