The Synthesis of RNA Containing the Modified NucleotidesN2-Methylguanosine andN6,N6-Dimethyladenosine
摘要:
The phosphoramidites of the naturally occurring modified nucleotides N-2-methylguanosine and N-6,N-6-dimethyladenosine were synthesized and incorporated into short oligoribonucleotides. Described are the syntheses of the phosphoramidites and the procedures used to deprotect oligoribonucleotides in which the O-6 Of m(2)G is protected with a 2-(p-nitrophenyl)ethyl group.
甲基化核糖核苷( m 1 G , m 2 G , m 2 2 G , m 1 I , m 3 U , m 4 C , m 6 )2'- O -[(三异丙基甲硅烷基)氧基]甲 基亚 磷 酰胺的合成 A , m 6 2 A )用于自动 RNA 固相合成
摘要:
描述了八种甲基化核糖核苷亚磷酰胺的直接合成。这些构建块允许天然存在的核苷1-甲基鸟(掺入 米 1 ģ ), Ñ 2 -methylguanosine( 米 2 ģ ), Ñ 2, Ñ 2 -dimethylguanosine( 米 2 2 G ^ ),1- methylinosine( 米 1 I ),3-甲基尿苷( m 3 U ), N 4-甲基胞苷( m 4 C ), N 6-甲基腺苷( m 6 A )和 N 6, N 6-二甲基腺苷( m 6 2 A )通过自动 RNA 固相合成形成寡核糖核苷酸 。在所有情况下,构件的核糖2'-羟基均被最近引入的[(三异丙基甲硅烷基)氧基]甲基( TOM )掩盖 。