Oligonucleotide Functionalization by a Novel Alkyne-Modified Nonnucleosidic Reagent Obtained by Versatile Building Block Chemistry
摘要:
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.
2′,3′-Dideoxyuridine triphosphate conjugated to SiO 2 nanoparticles: Synthesis and evaluation of antiproliferative activity
作者:Svetlana V. Vasilyeva、Inga R. Grin、Boris P. Chelobanov、Dmitry A. Stetsenko
DOI:10.1016/j.bmcl.2018.02.007
日期:2018.4
A conjugate of triphosphorylated 2',3'-dideoxyuridine (ddU) with SiO2 nanoparticles was obtained via the CuAAC click chemistry between a γ-alkynyl ddU triphosphate and azido-modified SiO2 nanoparticles. Assessment of cytotoxicity in human breast adenocarcinoma MCF7 cells demonstrated that ddU triphosphate conjugated to SiO2 nanoparticles exhibited a 50% decrease in cancer cell growth at a concentration
Efficient Functionalization of Oligonucleotides by New Achiral Nonnucleosidic Monomers
作者:Maxim S. Kupryushkin、Mikhail D. Nekrasov、Dmitry A. Stetsenko、Dmitrii V. Pyshnyi
DOI:10.1021/ol500668n
日期:2014.6.6
for automated solid-phase oligonucleotide synthesis. It is based on O-DMTr-protected 4-(2-hydroxyethyl)-morpholine-2,3-dione as the key compound and a family of building blocks obtained by its ring-opening by primary aliphatic amines. A series of nonnucleosidic phosphoramidites containing various side-chain functionalities was synthesized, and corresponding oligodeoxyribonucleotides incorporating modified
Conjugates of phosphorylated zalcitabine and lamivudine with SiO2 nanoparticles: Synthesis by CuAAC click chemistry and preliminary assessment of anti-HIV and antiproliferative activity
作者:Svetlana V. Vasilyeva、Alexander A. Shtil、Albina S. Petrova、Sergei M. Balakhnin、Polina Y. Achigecheva、Dmitry A. Stetsenko、Vladimir N. Silnikov
DOI:10.1016/j.bmc.2017.01.038
日期:2017.3
compounds were shown to be potent killers of humancoloncarcinoma cells. Anti-HIV activity of the conjugates was demonstrated as well. The conjugates of phosphorylated lamivudine and dideoxycytidine (zalcitabine) showed higher potency than the parent nucleosides. The conjugate of phosphorylated azidothymidine was less active against HIV-1 than the parent nucleoside probably because of the replacement of