1-Deaza-2'-deoxyadenosine: Phosphonate and Phosphoramidite Building Blocks for Solid-Phase Oligonucleotide Synthesis
作者:Frank Seela、Thomas Wenzel
DOI:10.3987/com-92-6214
日期:——
The synthesis of the 3'-[(2-cyanoethyl)diisopropylphosphoramidite] (3b) and the 3'-phosphonate (3a) of 1-deaza-2'-deoxyadenosine (1b) is described. For this purpose compound lb was protected at the 6-amino group with a benzoyl residue. Ensuing 4,4'-dimethoxytritylation of lb and phosphitylation afforded the P(III) derivatives(3a) and (3b). They were successfully employed in solid-phase oligodeoxyribonucleotide synthesis of d(c1A-c1A-c1A-A-A-A) (6). C-13-Nmr and N-15-nmr spectra of the compounds (1-5) are discussed.