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

2-chloro-8-hydroxy-7-methyl-1,4-naphthoquinone

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