Patent ID: 8394851

Claim:
A method to inhibit a free radical comprising administering to a subject in need thereof an effective amount of a composition comprising a compound of formula (I), an isomer, or a salt thereof; Wherein, R, together with the interadjacent nitrogen atom, represents an amino acid, amino ester, amino acid amide, peptide, or amino sugar group; and, Wherein said amino acid, amino ester, amino acid amide, or peptide is selected from the group consisting of formula (II) and isomers thereof; Wherein, R 1 =H, alkyl, aryl, aralkyl, hydroxyalkyl, heterocyclic-alkyl, mercapto-alkyl, dithio-alkyl, carboxyalkyl, amidoalkyl, and guanidinoalkyl; and R 2 =OR 3 , NR 3 R 4 , and peptide; and R 3 , R 4 =H, alkyl, and aryl; and n=0 to 10.