Patent ID: 8598114

Claim:
A compound of formula (I) AA-AA-AA-X—Y—Z (I) wherein, in any order, 2 of said AA (amino acid) moieties are cationic amino acids and 1 of said AA is an amino acid with a lipophilic R group, the R group having 14-27 non-hydrogen atoms; X is a N atom, which may be substituted by a branched or unbranched C 1 -C 10 alkyl or aryl group which group may incorporate up to 2 heteroatoms selected from N, O and S; Y represents —R a —R b — wherein R a is C, O, S or N, and R b is C; each of R a and R b may be substituted by C 1 -C 4 alkyl groups or unsubstituted; and Z is a group comprising 1 to 3 cyclic groups each of 5 or 6 non-hydrogen atoms, 2 or more of the cyclic groups may be fused and one or more of the cyclic groups may be substituted; the Z moiety incorporates as maximum of 15 non-hydrogen atoms; and wherein the bond between Y and Z is a covalent bond between R a or R b of Y and a non-hydrogen atom of one of the cyclic groups of Z.