Studies on a new antibiotic FR-900336 taxonomy, isolation and characterization

A new lipophilic antibiotic, FR-900336 was isolated from a culture of Streptomyces sioyaensis subsp. tanegashimaensis . FR-900336 is light yellow and has a molecular formula C30H30NO13C1 . The characterization by IR, UV, 1H NMR and 13C NMR spectra makes a quinone structure very probable. FR-900336 is active against Gram-positive bacteria and fungi.