| 摘要 |
Pharmaceutical compounds as follows: 9,10-dihydro-9,10-dioxo-4,5,8-trimethoxyanthracene-2-carboxylic acid, 4,5-diethoxy-9,10-dihydro-9,10-dioxoanthracene-2-carboxylic acid, 9,10-dihydro-9,10-dioxo-4,5-dipropoxyanthracene-2-carboxylic acid, 4,5-dibutoxy-9,10-dihydro-9,10-dioxoanthracene-2-carboxylic acid, 9,10-dihydro-5,8-dimethoxy-9,10-dioxoanthracene-2-carboxylic acid, 7-acetoxy-9,10-dihydro-9,10-dioxoanthracene-2-carboxylic acid; and salts and esters thereof.
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