(1RS,4aRS,9aRS)-1,5,8-trihydroxy-3-methyl-1,4,4a,9a-tetrahydro-9,10-anthraquinone

(1RS,4aRS,9aRS)-5,8-dihydroxy-3-methyl-1-trimethylsilyloxy-1,4,4a,9a-tetrahydro-9,10-anthraquinone

1-hydroxy-5,8-dimethoxy-3-methylanthracene-9,10-dione

3-methyl-1-triethylsilyloxy-1-trimethylsilyloxy-1,3-butadiene

(4α,4aβ,9aβ)-9a-chloro-8-hydroxy-1,1,4-trimethoxy-6-methyl-1,4,4a,9a-tetrahydroanthraquinone