2',3'-dideoxy purine nucleosides and process for the preparation thereof

摘要

2',3'-Dideoxy purine nucleosides represented by following general formulae [I] and/or [II] [I] [II] (wherein X and Y indicate nitrogen atoms or carbon atoms and R1, R2, R3, R4 and R5 indicate each independently any of hydrogen atom, hydroxyl group, amino group, alkyl group, halogen atom, alkoxy group and mercapto group) are produced by bioconversion with strains of E. coli, K. pneumoniae and E. herbicola.