| abstract |
<CHEM> <??>An amide of hyaluronic acid or a derivative thereof which comprises at least one repetitive unit of general formula (I): wherein R = NR6R7, or alcoholic group of the aliphatic, aromatic, arylaliphatic, cycloaliphatic, hyterocyclic series, OH, O-, alcoholic group of hyaluronic acid, amino group of deacylated hyaluronic acid; R1, R2, R3, R4 = H, SO3-, acyl group derived from a carboxylic acid of the aliphatic, aromatic, arylaliphatic, cycloaliphatic, heterocylic series, -CO- (CH2)2-COOY; Y= negative charge, or H; R5 = -CO-CH3, H, SO3-, acyl group derived from a carboxylic acid of the aliphatic, aromatic, arylaliphatic, cycloaliphatic, heterocyclic series, acylic group of hyaluronic acid; R6= is H or a aliphatic, aromatic, arylaliphatic , cycloaliphatic, or heterocyclic group, substituted or unsubstituted; R7 = is H or an aliphatic, aromatic, arylaliphatic, cycloaliphatic, or heterocyclic group, substituted or unsubstituted; wherein at least one of R or R5 forms an amide group. |