Author/Authors :
Fukuhara، نويسنده , , Kiyoshi and Ohno، نويسنده , , Akiko and Nakanishi، نويسنده , , Ikuo and Imai، نويسنده , , Kohei and Nakamura، نويسنده , , Asao and Anzai، نويسنده , , Kazunori and Miyata، نويسنده , , Naoki and Okuda، نويسنده , , Haruhiro، نويسنده ,
Abstract :
The reaction of ninhydrin with (+)-catechin in the presence of TMSOTf resulted in condensation product 1, which consists of a 2:1 mixture of epimers at the C-2 position. The antioxidative radical-scavenging activity of 1 against the galvinoxyl radical, acting as an oxyl radical, was significantly enhanced compared to (+)-catechin. Our results offer a new method for chemical modification of a natural phenolic antioxidant.
Keywords :
Ninhydrin , Galvinoxyl radical , Radical scavenging , Catechin , antioxidant
