Reverse-direction (5′→3′) synthesis of oligonucleotides containing a 3′-S-phosphorothiolate linkage and 3′-terminal 3′-thionucleosides
作者:James W. Gaynor、Michael M. Piperakis、Julie Fisher、Richard Cosstick
DOI:10.1039/b923545k
日期:——
5′-oxygen to the 3′-thiol function. 5′→3′ Synthesis of oligonucleotides gave relatively poor yields for the internal incorporation of 3′-thionucleosides [to give a 3′-S-phosphorothiolate (3′-SP) linkage] and multiple 3′-SP modifications could not be introduced by this method. However, the reverse direction approach provided an efficient route to oligonucleotides terminating with a 3′-thionucleoside