Radical Scavenging Mechanisms of Catechins on 2,2-Diphenyl-1-picrylhydrazyl Radical

Soybean Lipoxygenase Inhibitory and DPPH Radical-Scavenging Activities of Aspernolide A and Butyrolactones I and II

“…Two research groups have already presented a similar reaction mechanism between tea catechin and a DPPH radical. 15,16) In the case of catechin, the ortho dihydroxy structure was converted into ortho quinone, but not into quinone methide. Accordingly, aspernolide A is the first compound we can assume to be transformed to a quinone methide by the reaction with two molecules of the DPPH radical.…”