(1SR,4aSR,9aSR)-1,4,4a,9a-Tetrahydro-1,5,8-trihydroxy-2-methyl-9,10-anthraquinone

1,5,8-Trihydroxy-2-methyl-9,10-anthraquinone

(1aR,9R,9aR)-4,7-Dihydroxy-9a-methyl-9-trimethylsilanyloxy-1a,2,9,9a-tetrahydro-1-oxa-cyclopropa[b]anthracene-3,8-dione

(1SR,2SR)-1,2-Dihydro-2,5,8-trihydroxy-2-methyl-1-trimethylsiloxy-9,10-anthraquinone

2,4,7-trihydroxy-1a-methyl-1a,2,2a,8a,9,9a-hexahydroanthra[2,3-b]oxirene-3,8-dione