Establishment of Camellia sinensis cell culture with high peroxidase activity and oxidative coupling reaction of dibenzylbutanolides

Abstract We succeeded in establishment of Camellia sinensis cell culture with high peroxidase activity. When dibenzylbutanolides ( 1a – c ) were reacted with C. sinensis cell culture, peroxidase-catalyzed oxidative coupling of 1a – c to cyclic products ( 2a – c ) proceeded quantitatively in the absence of foreign hydrogen peroxide as cofactor.