1. Synthesis of 15N-Enriched Pseudouridine Derivatives.
Desaulniers, J. P., Ksebati, B., & Chow, C. S. (2003). Organic Letters, 5(22), 4093-4096.
A procedure for the chemical synthesis of [3-15N]-labeled pseudouridine and a methylated derivative was developed. A suitably protected pseudouridine precursor was nitrated at N3 followed by treatment with 15NH4Cl to afford the 15N-labeled product in six steps with a 20% yield. This methodology will allow for the production of RNAs with [3-15N]pseudouridine and [3-15N-methyl]pseudouridine at specific locations.