Abstract: The present invention relates to a compound according to formula: (I); wherein X1, X2, X3, X4 and X5 independently of each other represent —CH— or N; or X3, X4 and X5 independently of each other represent —CH— or N, and Xi and X2 independently of each other represent C and form part of an additional 6-membered aromatic ring; R1 represents hydrogen, alkyl, alkenyl, alkynyl, haloalkyl, hydroxyalkyl, or alkylcarbonyl, all of which are optionally substituted; R2 and R3 independently represent hydrogen, —CH2—C(O)NR—R?, alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkynyl, haloalkyl, hydroxyalkyl, heterocycloalkenyl, alkylaryl, alkylalkoxycarbonyl, alkylcarbonyloxy, or alkoxyalkyl, all of which are optionally substituted; R11 represents hydrogen, halogen, cyano, amino, alkoxy or alkylamino, X1-X5 represent —CH— or N, including N-oxides, enantiomers and diastereomers; and pharmaceutically acceptable salts, hydrates, or solvates thereof.

Abstract: Novel compounds comprising a steroid backbone coupled to a branched polyamine according to formula I are provided. The compounds show antimicrobial activity and may be used in the treatment and prevention of infections, in particular bacterial infections.