Further Optimization of Detritylation in Solid-Phase Oligodeoxyribonucleotide Synthesis
作者:Kha Tram、Yogesh S. Sanghvi、Hongbin Yan
DOI:10.1080/15257770.2010.537291
日期:2011.1.21
protecting groups) during solid-phase synthesis of oligodeoxyribonucleotides were investigated. Di- and tri-chloroacetic acids of variable concentrations were used to study the removal of the 4,4′-dimethoxytrityl (DMTr) group. It was found that the DMTr group could be completely removed under much milder acidic conditions than what are currently used for automated solid-phase synthesis. The 2,7-dimethylpixyl
研究了寡脱氧核糖核苷酸固相合成过程中最佳去三苯甲基化的各种条件(即去除5'- O-三苯甲基保护基)。使用可变浓度的二氯和三氯乙酸来研究4,4'-二甲氧基三苯甲基(DMTr)基团的去除。已经发现,在比目前用于自动化固相合成的温和得多的酸性条件下,可以完全除去DMTr基团。提出了2,7-二甲基pixyl(DMPx)作为在固相和溶液相合成中用于保护5'-OH功能的替代且更易于除去的基团。改善的去三苯甲基化条件有望使浪费最小化,并提供将酸敏感性构建基掺入寡核苷酸的方案。