Synthesis of photocaged 6-O-(2-nitrobenzyl)guanosine and 4-O-(2-nitrobenzyl) uridine triphosphates for photocontrol of the RNA transcription reaction

Add time:07/12/2019    Source:sciencedirect.com

6-O-(2-Nitrobenzyl)guanosine and 4-O-(2-nitrobenzyl)uridine triphosphates (NBGTP, NBUTP) were synthesized, and their biochemical and photophysical properties were evaluated. We synthesized NBUTP using the canonical triphosphate synthesis method and NBGTP from 2′,3′-O-TBDMS guanosine via a triphosphate synthesis method by utilizing mild acidic desilylation conditions. Deprotection of the nitrobenzyl group in NBGTP and NBUTP proceeded within 60 s by UV irradiation at 365 nm. Experiments using NBGTP or NBUTP in T7-RNA transcription reactions showed that NBGTP could be useful for the photocontrol of transcription by UV irradiation.

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