Novel base protecting groups for oligonucleotide synthesis

摘要

The invention provides new processes for synthesizing oligonucleotides that allow for deprotection of the oligonucleotide under more mild conditions than existing methods. The invention further provides a nucleoside base protecting group that is stable under oligonucleotide synthesis conditions, but which can be removed under more mild conditions than existing protecting groups, as well as nucleoside synthons having such base protecting groups. The invention also provides oligonucleotides containing any of a variety of base labile functionalities and methods for using such oligonucleotides.