Patent ID: 7517913

Claim:
One or more conjugate of a polyamine with an acidic retinoid, in which an R group in a) and/or b) below is one of the retinoid residues R 1 -R 6 set forth in the following acidic retinoids, the retinoid residues obtained by removing the COOH group from each of the following acidic retinoids: and said polyamine is: a) a linear polyamine, in which case the one or more conjugate has the following formulae: wherein n is 1 to 9; or b) a branched polyamine, in which case the one or more conjugate has the following formula: wherein R′ is COR or (CH 2 ) 3 NHCOR and R″ is COR or (CH 2 ) 3 NHCOR and n is one of the numbers 1, 2 or 7.