synthesized by aziridine formation reaction of nitroxyl‐introduced aldehyde and guanidinium ylide in good diastereoselectivity. The relative configuration at aziridine C(2)C(3) bond of the major diastereoisomer was determined to be cis by X‐ray crystallographic analysis. Application of chiral guanidinium ylide resulted in the formation of the corresponding optically active aziridine in 84% ee. Reversible
Spin‐Labeled Riboswitch Synthesized from a Protected TPA Phosphoramidite Building Block
作者:Frank Kaiser、Burkhard Endeward、Alberto Collauto、Ute Scheffer、Thomas F. Prisner、Michael W. Göbel
DOI:10.1002/chem.202201822
日期:2022.10.7
nitroxide TPA (2,2,5,5-tetramethyl-pyrrolin-1-oxyl-3-acetylene) has been protected with a light sensitive 2-NBOM group and connected to a uridine phosphoramidite building block. Spin-labeled RNA can be obtained from this compound by standard protocols of oligonucleotidesynthesis and used for EPR studies after light-induced deprotection.