High-Yield Solution-Phase Synthesis of Di- and Trinucleotide Blocks Assisted by Polymer-Supported Reagents
作者:Cécile Dueymes、Andreas Schönberger、Ilaria Adamo、Aude-Emmanuelle Navarro、Albert Meyer、Meinolf Lange、Jean-Louis Imbach、Fritz Link、François Morvan、Jean-Jacques Vasseur
DOI:10.1021/ol0511777
日期:2005.8.1
[GRAPHICS]A new solution-phase phosphoramidite approach is reported for oligonucleotide synthesis employing recyclable solid-supported reagents. It uses polyvinyl pyridinium tosylate as the activator of a nucleoside-3'-O-phosphoramidite in the coupling step with a 5'-OH nucleoside or dinucleotide. The resulting phosphite triester was either sulfurized or oxidized using polystyrene-bound trimethylammonium tetrathionate or periodiate. This method avoids complicated purification steps, as excess reagents are easily removed by filtration.