“…As development of novel polyphenol compounds, a number of studies on the enzyme-catalyzed oxidative polymerization of phenol derivatives via C-C or C-O coupling have been published, [17][18][19] and a signicant number of studies on the polymerization of bArb have been reported. [20][21][22][23][24][25] Unfortunately, the selectivity of C-C coupling over C-O coupling for bArb systems was found to be generally poor, and the number average molecular weight (M n ) of the resulting polymers was limited to 3200, most likely due to the occurrence of enzyme-catalyzed equilibrium polymerization.…”