2 propanol 1 2',3',5' tri o acetyl 1 beta dextro arabinofuranosyluracil 1 2',3',5' tri o acetyl 9 beta dextro arabinofuranosyladenine 1 Acetylation 1 Biomolecules 1 Candida antarctica 1 Candida antarctica lipase B 1 Catalysis 1 Deacetylation 1 Degree of acetylation 1 Doratomyces microsporus 1 Hydrolases 1 Iso-propanols 1 Keratinase 1 Lipase 1 Nucleosides 1 Paecilomyces marquandii 1 Prodrugs 1 Protective group 1 Reaction medium 1 Regio-selective 1 Regioselective deacetylation 1 Regioselectivity 1 arabinonucleoside 1 article 1 catalysis 1 controlled study 1 deacetylation 1 drug structure 1 enzyme assay 1