| abstract |
PROBLEM TO BE SOLVED: To provide a novel compound having an anti-free radical property, particularly an effect for inactivating singlet oxygen. SOLUTION: The following general formula (I): [Where n is an integer in the range of 0 to 5 and n ′ is 1 to 1 6 range of integer, R represents the side chain of an amino acid, X is read from left to right -NH-CO -, - SO 2 - , etc., R 'is a linear or branched C 6 -C 22 alkyl group , Q + represents H + or an organic cation, etc.] and an acid addition salt thereof. |