Abstract
Malonyl-4,5-dihydroniphimycin was isolated as a new antibiotic from the mycelium of Streptomyces hygroscopicus 15. The chemical constitution was elucidated from the physico-chemical properties, using NMR techniques and mass spectrometry, to be a 36-membered macrolide related to non-polyenic antibiotics. Malonyl-4,5-dihydroniphimycin displays activity against filamentous fungi and Gram-positive bacteria.
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