The present invention relates to novel compounds of formulae (I) and (II) and pharmaceutically acceptable salts thereof that are useful in the treatment and/or prevention of human and animal bacterial infections and associated diseases and conditions compositions containing such compounds derivation of such compounds by fermentation and isolation, partial synthesis and total synthesis methods of inhibiting bacterial growth methods of treating, preventing or controlling bacterial infection biologically pure cultures of bacterial strains from which such compounds may be produced and processes for preparing compositions containing such compounds.
