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The Journal of Antibiotics
Vol. 44 (1991) No. 2 P 160-163

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http://doi.org/10.7164/antibiotics.44.160


A new glutarimide antibiotic named actiketal was isolated from the culture fluid of the epiderstatin-producing streptomycete, Streptomyces pulveraceus subsp. epiderstagenes. The IC50 of the antibiotic for inhibition of the incorporation of [3H]thymidine into epidermal growth factor-stimulated Balb/MK cells was 14.5 μM. The structure of this compound was determined by 1H and 13C NMR spectroscopic analyses using 1H-1H COSY, 13C-1H COSY, heteronuclear multiple-bond correlation spectroscopy, selective 13C-{1H} NOE's techniques.

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