Synthesis and incorporation of the phosphoramidite derivative of 2'-O-photocaged 3'-s-thioguanosine into oligoribonucleotides: substrate for probing the mechanism of RNA catalysis.

Synthesis and incorporation of the phosphoramidite derivative of 2'-O-photocaged 3'-s-thioguanosine into oligoribonucleotides: substrate for probing the mechanism of RNA catalysis.
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DOI:
10.1021/jo4028374
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发表时间:
2014-04-18
期刊:
The Journal of organic chemistry
影响因子:
--
通讯作者:
Piccirilli JA
Piccirilli JA
中科院分区:
其他
文献类型:
--
作者:
Li NS;Tuttle N;Staley JP;Piccirilli JA

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Oligoribonucleotides containing 3′-S-phosphorothiolate linkages possess properties that can reveal deep mechanistic insights into ribozyme-catalyzed reactions. “Photocaged” 3′-S- RNAs could provide a strategy to stall reactions at the chemical stage and release them after assembly steps have occurred. Toward this end, we describe here an approach for the synthesis of 2′-O-(o-nitrobenzyl)-3′-thioguanosine phosphoramidite starting from N2-isobutyrylguanosine in nine steps with 10.2% overall yield. Oligonucleotides containing the 2′-O-(o-nitrobenzyl)-3′-S-guanosine nucleotide were then constructed, characterized, and used in a nuclear pre-mRNA splicing reaction.
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