Patent ID: 8404802

Claim:
A compound of formula I or a pharmaceutically acceptable salt thereof, wherein G represents glycine; D represents aspartic acid; R 1 represents —(CH 2 ) n — or —(CH 2 ) n —C 6 H 4 — wherein n represents a positive integer 1 to 10, and h represents a positive integer 1 or 2; X 1 represents a bond or 1 to 5 amino acid residues wherein each amino acid residue independently optionally can be derivatized with a functional side-chain chosen from C 1-22 alkyl, C 1-22 perfluoroalkyl or polyethyleneglycol; X 2 and X 4 represent independently an amino acid residue capable of forming a disulfide bond; X 3 represents arginine, N-methylarginine or an arginine mimetic; X 5 represents a hydrophobic amino acid; X 6 represents a thiol-containing amino acid residue; k represents a positive integer 1 to 10; X 7 represents an amino acid residue; and X 8 is absent.