Oligonucleotide Functionalization by a Novel Alkyne-Modified Nonnucleosidic Reagent Obtained by Versatile Building Block Chemistry
作者:Maxim S. Kupryushkin、Dmitrii A. Konevetz †、Svetlana V. Vasilyeva、Anastasia S. Kuznetsova、Dmitry A. Stetsenko、Dmitrii V. Pyshnyi
DOI:10.1080/15257770.2013.787147
日期:2013.1
A convenient synthetic strategy has been designed to prepare an alkyne-modified synthon for automated DNA synthesis. It is based on the key O-DMTr-protected 4-(2-hydroxyethyl)morpholin-2,3-dione and building blocks obtained by its functionalization by various aliphatic amines. A respective nonnucleosidic phosphoramidite monomer containing a terminal alkyne in the side-chain was synthesized, and corresponding oligothymidylates incorporating the modification in various positions were prepared. The presence of the alkyne group was confirmed by Cu(I)-catalyzed azidealkyne cycloaddition (CuAAC) between the functionalized oligonucleotide and an azide derivative of 7-nitro-2,1,3-benzoxadiazole.