Abstract

13 C Nmr analyses were carried out to deduce the labeling patterns of the curvularin-type metabolites of the the hybrid strain ME 0005 derived from [1,2- 13 C 2 ] acetate, indicating that eight acetate molecules are incorporated into these metabolites. And citreofuran, 12-oxocurvularin, and 11β-hydroxy-12-oxocurvularin are presumably formed from curvularin by enzymatic oxygenation. In addition, the structure of 11β-hydroxy-12-oxocurvularin was also supported by the present experiments

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