Abstract

Molecular network analysis of Streptomyces sp. CMB-MW079 detected rare phosphorylated natural products. Miniaturized cultivation profiling (MATRIX) established optimal conditions for the production, isolation, and identification of the polyketide δ-lactone phoslactomycin E (1) and new ester homologues, phoslactomycins J and K (2 and 3), as well as unprecedented heterocyclic analogues, the tetrahydrofuran cyclolactomycins A-D (4-7) and γ-lactone isocyclolactomycins A-C (8-10). We propose a biogenetic relationship linking these cometabolites with the known lactomycins A-C which were tentatively identified as minor cometabolites.

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