作者:Toshihide Yamasaki、Yuko Ito、Fumiya Mito、Kana Kitagawa、Yuta Matsuoka、Mayumi Yamato、Ken-ichi Yamada
DOI:10.1021/jo200361p
日期:2011.5.20
Nitroxides have antioxidative activities toward lipid peroxidation, but the influence of steric factors is not known. We synthesized alkyl-substituted nitroxides at the alpha-position of the N-O moiety to enhance lipophilicity and the bulk effect. There was good correlation between the IC(50) and lipophilicity (log P(o/w)) of nitroxides with use of the thiobarbituric acid-reactive substances (TBARS) assay. Furthermore, an inhibitory effect on the TBARS assay was dependent upon the number and length of alkyl groups, though nitroxides had almost identical lipophilicity.