Enzymatic carbohydrate oxidation with pyranose oxidase converts a variety of carbohydrates into 2-keto-aldoses in yields from 40 to 98 % (see figure). Some glycosides may be regioselectively oxidised in position 3 by using the same enzyme, and pyranose oxidase can also act as a glycosidase/glycosyl-transferring enzyme with some compounds. The structural requirements for substrates of pyranose oxidase are deduced.
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Freimund et al. (1998) studied this question.