US Patent 7750131 5′-modified bicyclic nucleic acid analogs

The present invention provides 5′-modified bicyclic nucleoside analogs and oligomeric compounds comprising at least one of these nucleoside analogs. In preferred embodiments the nucleoside analogs have either (R) or (S)-chirality at the 5′-carbon. These bicyclic nucleoside analogs are useful for enhancing properties of oligomeric compounds including for example enhanced nuclease resistance.