1,8-dihydroxy-2-(2-methylpropyl)anthracene-9,10-dione

1-methoxy-8-prop-2-enoxyanthracene-9,10-dione

1-hydroxy-8-methoxy-2-prop-2-enylanthracene-9,10-dione

1,8-dimethoxy-2-prop-2-enylanthracene-9,10-dione

1-methoxy-8-pent-1-en-3-yloxyanthracene-9,10-dione