The invention refers to of a compound of the formula (I) wherein R3 and R4 are independentlyH or OH, and wherein m and n are independently of one another 0, 1 or 2, obtainablefrom Actinomadura namibiensis (DSM 6313), its use for the treatment of bacterialinfections, viral infections and/or pain, and pharmaceutical compositioncomprising it. The compounds of formula (I) have been defined as labyrinthopeptinsand consist of a highly bridged peptidic structure of 18 amino acids containinglanthionine-like residues and alpha disubstituted amino acid analogues. Theamino acid sequence is XDWXLWEXCXTGXLFAXC, wherein the two Cys residues forma disulfide bridge and each X independently represents one of the non-naturalamino acids involved in the bridging linkages.
