[EN] 2'-O-AMINOOXYMETHYL NUCLEOSIDE DERIVATIVES FOR USE IN THE SYNTHESIS AND MODIFICATION OF NUCLEOSIDES, NUCLEOTIDES AND OLIGONUCLEOTIDES<br/>[FR] DÉRIVÉS DE 2'-O-AMINOOXYMÉTHYL NUCLÉOSIDE POUR L'UTILISATION DANS LA SYNTHÈSE ET LA MODIFICATION DE NUCLÉOSIDES, NUCLÉOTIDES ET OLIGONUCLÉOTIDES
申请人:US HEALTH
公开号:WO2012138530A1
公开(公告)日:2012-10-11
Disclosed are O-protected compounds of the formula (I):wherein B is an optionally protected nucleobase, and R1-R3 are as described herein, a method of preparing such compounds, and a method of preparing oligonucleotides such as RNA starting from such compounds. The O-protected compounds have one or more advantages, for example, the 2'-O-protected compound is stable during the various reaction steps involved in oligonucleotide synthesis; the protecting group can be easily removed after the synthesis of the oligonucleotide, for example, by reaction with tetrabutylammonium fluoride; and/or the O-protected groups do not generate DNA/RNA alkylating side products, which have been reported during removal of 2'-O-(2-cyanoethyl)oxymethyl or 2'-O-[2-(4-tolylsulfonyl)ethoxymethyl groups under similar conditions.
Permanent or reversible conjugation of 2′-O- or 5′-O-aminooxymethylated nucleosides with functional groups as a convenient and efficient approach to the modification of RNA and DNA sequences
作者:Jacek Cieślak、Andrzej Grajkowski、Cristina Ausín、Alexei Gapeev、Serge L. Beaucage
DOI:10.1093/nar/gkr896
日期:2012.3
demonstrated by the single or double incorporation of a reversible pyrenylated uridine 2′-conjugate into an RNA sequence, the conjugation of 2′-O-aminooxymethyl ribonucleosides with aldehydes, including those generated from their acetals, provides reversible 2′-O-protected ribonucleosides for potential applications in the solid-phase synthesis of native RNA sequences. The synthesis of a chimeric polyuridylic
2'-O-AMINOOXYMETHYL NUCLEOSIDE DERIVATIVES FOR USE IN THE SYNTHESIS AND MODIFICATION OF NUCLEOSIDES, NUCLEOTIDES AND OLIGONUCLEOTIDES
申请人:Beaucage Serge L.
公开号:US20140051846A1
公开(公告)日:2014-02-20
Disclosed are O-protected compounds of the formula (I): wherein B is an optionally protected nucleobase, and R
1
-R
3
are as described herein, a method of preparing such compounds, and a method of preparing oligonucleotides such as RNA starting from such compounds. The O-protected compounds have one or more advantages, for example, the 2′-O-protected compound is stable during the various reaction steps involved in oligonucleotide synthesis; the protecting group can be easily removed after the synthesis of the oligonucleotide, for example, by reaction with tetrabutylammonium fluoride; and/or the O-protected groups do not generate DNA/RNA alkylating side products, which have been reported during removal of 2′-O-(2-cyanoethyl)oxymethyl or 2′-O-[2-(4-tolylsulfonyl)ethoxymethyl groups under similar conditions.
Protection of the 2′-Hydroxy Function of Ribonucleosides as an Iminooxymethyl Propanoate and Its 2′-<i>O</i>-Deprotection through an Intramolecular Decarboxylative Elimination Process
作者:Jacek Cieślak、Andrzej Grajkowski、Cristina Ausín、Serge L. Beaucage
DOI:10.1002/ejoc.201601308
日期:2016.12
nucleosides react with ethyl pyruvate to provide 2′‐O‐iminooxymethyl propanoate derivatives after saponification. Cleavage of the 2′‐hydroxy protecting group to give native ribonucleosides is demonstrated through a quantitative tetraalkylammonium‐salt‐mediated decarbonylative elimination, in dimethyl sulfoxide (DMSO) to produce all four 2′‐O‐deprotected ribonucleosides.