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J Antibiot (Tokyo). 2006 May;59(5):315-7.

Fogacin, a novel cyclic octaketide produced by Streptomyces strain Tü 6319.

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  • 1Institut für Organische und Bioorganische Chemie, Universität Göttingen, Tammannstr. 2, D-37077 Gottingen, Germany.


A new octaketide named fogacin (1) was isolated from Streptomyces sp. (strain Tü 6319). Furthermore two shunt metabolites, SEK4b (2) and anhydroSEK4b (3), were detected and identified as non-enzymatically cyclized products of polyketide intermediates built during the biosynthesis of actinorhodin. SEK4b (2) as well as anhydroSEK4b (3) were previously described as metabolites of genetically engineered strains.

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