title: Novel macrocyclic antibiotics: megovalicins A, B, C, D, G and H. II. Isolation and chemical structures of megovalicins.
abstract: Myxococcus flavescens AJ12298 was found to produce the complex of macrocyclic antibiotics named megovalicins. The physico-chemical studies revealed that megovalicins C and B were identical to myxovirescin A1 and antibiotic M-230B, respectively, and that megovalicins A, D, G and H were closely related new antibiotics.
mesh_terms: D000900:Anti-Bacterial Agents / Q000302:isolation & purification*; D055598:Chemical Phenomena; D002621:Chemistry; D007783:Lactones / Q000302:isolation & purification; D009231:Myxococcales / Q000378:metabolism*
chemical_list: D000900:Anti-Bacterial Agents; D007783:Lactones