Automated Solid-Phase Synthesis of RNA Oligonucleotides Containing a Nonbridging Phosphorodithioate Linkage via Phosphorothioamidites
作者:Nan-Sheng Li、John K. Frederiksen、Joseph A. Piccirilli
DOI:10.1021/jo301834p
日期:2012.11.2
This work describes a general method for the synthesis of oligoribonucleotides containing a site-specific nonbridging phosphorodithioate linkage via automated solid-phase synthesis using 5′-O-DMTr-2′-O-TBS-ribonucleoside 3′-N,N-dimethyl-S-(2,4-dichlorobenzyl) phosphorothioamidites (2a–2d). The 3′-phosphorothioamidites (2a–2d) can be conveniently prepared in good yields (86–99%) via a one-pot reaction
这项工作描述了一种通过使用 5'- O -DMTr-2'- O -TBS-核糖核苷 3'- N , N -二甲基- S -(2,4-二氯苄基)磷硫代酰胺 ( 2a – 2d )。3'- phosphorothioamidites(2A - 2D)可以以良好的产率(86-99%),通过从相应的5'-单釜反应方便地制备ö -DMTr -2'- ö -TBS核糖核苷(1A - 1d )。