Patent ID: 7125956

Claim:
A compound having the structure: wherein n=0,1,2,3,4 or 5 and m=0,1,2,3,4 or 5, provided the sum of (n+m) is greater than or equal to two and less than or equal to five, if n=1, (AA 1 ) n =Ala-, if n=2, (AA 1 ) n =Gln-Ala-, if n≧3, (AA 1 ) n =(Xaa) p -Gln-Ala-, and Xaa=any amino acid and wherein if n=3, p=1, if n=4, p=2, if n=5, p=3, if m=1, (AA 2 ) m =-Arg, if m=2, (AA 2 ) m =-Arg-Gly, if m≧3, (AA 2 ) m =-Arg-Gly-(Xaa) q , wherein if m=3, q=1, if m=4, q=2, if m=5, q=3, wherein each V, V′ or V″ is independently an agent capable of specifically directing the compound to a cell.