Patent ID: 7160923

Claim:
A polyamine derivative, or salt thereof, wherein said derivative has the formula R 1 —X—R 2 , wherein R 1 —X— is of the formula R—NH—CR′R″—CO—, wherein —NH—CR′R″—CO— is a D- or L-form of valine, asparagine, or glutamine, or the D-form of lysine or arginine; wherein R″ is H, CH 3 , CH 2 CH 3 , or CHF 2 ; wherein R is H or a head group selected from the group consisting of a straight or branched C 1-10 aliphatic, alicyclic, single or multiring aromatic, single or multiring aryl substituted aliphatic, aliphatic-substituted single or multiring aromatic, a single or multiring heterocyclic, a single or multiring heterocyclic-substituted aliphatic and an aliphatic-substituted aromatic; and wherein R 2 is a polyamine.