for the following products
(2R,3R,4R,5R)-5-(6-Amino-9H-purin-9-yl)-4-fluoro-2-(hydroxymethyl)tetrahydrofuran-3-ol | (2R,3R,4R,5R)-5-(6-Aminopurin-9-yl)-4-fluoro-2-(hydroxymethyl)oxolan-3-ol | 2'-Deoxy-2'-fluoroadenosine and 2'-Fluoro-2'-deoxy-D-adenosine
