2.1.1.341 vanillate/3-O-methylgallate O-demethylase syringate degradation - 3.1.1.57 2-pyrone-4,6-dicarboxylate lactonase syringate degradation - 4.1.1.112 oxaloacetate decarboxylase syringate degradation - 5.3.2.8 4-oxalomesaconate tautomerase syringate degradation -