Replacement of the phosphodiester linkage in oligonucleotides by heterocycles: synthesis of thymidine dinucleotide analogs with triazole-modified backbones
作者:Peter von Matt、Thomas Lochmann、Karl-Heinz Altmann
DOI:10.1016/s0960-894x(97)00269-2
日期:1997.6
Novel backbone-modified dinucleotide analogs of types V and VI have been synthesized, where the natural phosphodiester linkage of a T-T dinucleotide has been replaced by a triazole heterocycle. The key step of the synthesis is the regioselective, thermal cycloaddition of a 2-oxoalkylidene triphenylphosphorane with an azide derivative to generate the triazole ring. (C) 1997 Elsevier Science Ltd.