Stereoselective Reformatskii–Claisen rearrangement: synthesis of 2′,3′-dideoxy-6′,6′-difluoro-2′-thionucleosides?

Chemical Communications Pub Date: 2009-01-26 DOI: 10.1039/B819289H

Abstract

A new approach for the stereoselective synthesis of 2′,3′-dideoxy-6′,6′-difluoro-2′-thionucleosides, analogues of highly bioactive L-OddC and 3TC, has been developed viaTMSCl/pyridine induced stereoselective Reformatskii–Claisen rearrangement of secondary allyl chlorodifluoroacetate and then a regioselective Pummerer reaction to introduce bases.

Graphical abstract: Stereoselective Reformatskii–Claisen rearrangement: synthesis of 2′,3′-dideoxy-6′,6′-difluoro-2′-thionucleosides
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