Microbial synthesis of 2,6-diaminopurine nucleosides

2,6-Diaminopurine nucleosides are used as pharmaceutical drugs or prodrugs against cancer and viral diseases.The synthesis of 2,6-diaminopurine riboside, -2′-deoxyriboside, -2′,3′-dideoxyriboside and -arabinofuranoside was efficiently carried out by transglycosylation using bacterial whole cells as biocatalysts. The preparation of 2,6-diaminopurine-2′,3′-dideoxyriboside catalysed by whole cells is here reported for the first time.