摘要:
                                3'-Azido-4'-ethynyl-3',5'dideoxy-5'-norarabinouridine 10 was synthesized from commercial uridine 1 in which the key step is the opening of protected 2',3'-epoxyuridine derivative 7 by sodium azide and the hydroxymethyl at 4-position of the ribose ring are replaced by ethynyl group. (C) 2010 Elsevier Ltd. All rights reserved.