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 laccaridione B An organic heterotricyclic compound that is 1H-benzo[g]isochromene-8,9-dione substituted by an ethoxy group at position 1, hydroxy group at position 10, a methoxy group at position 7 and a 4-methylhex-2-en-2-yl group at position 3. Isolated from the stem of the fruiting bodies of the basidiomycete strain Laccaria amethystea, it exhibits inhibitory activity against proteases. | 

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