Novel Oxidations of (+)-Catechin by Horseradish Peroxidase and Laccase
作者:Mohammed Hosny、John P. N. Rosazza
DOI:10.1021/jf020503j
日期:2002.9.1
catalyzed the H(2)O(2)-dependent oxidative coupling of (+)-catechin 1 to form three different biphenyl C-C dimers 2-4, whereas Rhus vernicifera laccase catalyzed the formation of twonew catechin-hydroquinone adducts 5 and 6. Spectroscopic evidence showed that HRP dimers were linked through position 8 of the A-ring of one catechin moiety to C-5' of ringB in 2 and 4 and to C-2 of ring C in 3. The unusual