Add time:07/22/2019         Source:sciencedirect.com

The synthesis of N7-(2-deoxy-β-D-erythro-pentofuranosyl)adenine 7Ad, 1) is described. Compound 1 was protected at the 6-amino group with the dimethylaminomethylidene residue (3a), the DMT group was selected for OH-5′ protection (3b) and the 3′-phosphonate 3c was prepared. Solid-phase synthesis employing 3c furnished oligonucleotides containing7Ad.

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