Lactonamycin, A New Antimicrobial Antibiotic Produced By Streptomyces Rishiriensis Mj773-88k4 I. Taxonomy, Fermentation, Isolation, Physico-Chemical Properties And Biological Activities

Lactonamycin (1) was isolated from a culture broth of Streptomyces rishiriensis MJ773-88K4. Antibiotic 1 exhibited antimicrobial activities against Gram-positive bacteria including methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Enterococcus (VRE).