Procedure for obtaining fluorinated nucleosides.

The invention relates to Newer nucleosides 3 '' FLUORINATED active against HIV infections (AIDS), of formula (I) wherein R1 is a moiety KINGDOM LINKED N-1-glucoside derived thymine, uracil, uracil, 5- rEPLACED, cytosine or 5-substituted derivative A cytosine, OR, A REST KINGDOM LINKED N-9-glucoside derived from 2-fluoroadenine, 2,6-diaminopurine, 2-aminopurine, 6-thioguanine or 7-deazaadenine ; ES HU R2 OH; And R3 is OH, O-acetyl, O-palmitoyl, triphosphate and ACID FREE OR IN THE FORM OF SALES FOR ALKALINE ammonium or alkylammonium, or a precursor group HYDROXY GROUP. The invention relates also to pharmaceutical agents FOR OBTAINING AND UTILIZATION AND. AN ACTIVE IS SUITABLE ESPECIALLY 2 '', 2 '' - dideoxy 3 '' - FLUORTIMINA.