Dicitrinol, a Citrinin Dimer, Produced by Penicillium janthinellum

[摘要]：A citrinin dimer, named dicitrinol (3), was isolated from extracts obtained from a rice cultivation of Penicillium janthinellum, a fungus found in fruits of Melia azedarach. Dicitrinol (3) was isolated by classical chromatographic procedures, and identified by MS, and 1D- and 2D-NMR data. A biosynthetic scheme is proposed for this new dimerization of citrinin. Dicitrinol (3) was shown to be slightly weaker than citrinin regarding bacterial inhibition.

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