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. Author manuscript; available in PMC: 2010 Mar 25.
Published in final edited form as: J Am Chem Soc. 2009 Mar 25;131(11):3834–3835. doi: 10.1021/ja810029b

Figure 1.

Figure 1

Structures of compounds 1–6 isolated from the culture of Aspergillus sp. Compounds 7–10 were metabolites isolated only from the feeding experiment with 13C-labelled 6. In 8 and 9, the stereochemistry of the diol moieties has not yet been assigned relative to that of the dioxopiperazine moieties.