A versatile procedure for the generation of nucleoside 5'-carboxylic acids using nucleoside oxidase

The nucleoside oxidase from Stenotrophomonas maltophilia (FERM BP-2252) has been used to generate 5′-carboxylic acid derivatives of nucleoside analogues. The enzyme, which has a surprisingly broad substrate specificity for unnatural nucleosides, has been immobilised and used at preparative scale.