Designing Molecular Probes To Prolong Intracellular Retention: Application to Nitroxide Spin Probes
作者:Eric A. Legenzov、Sukumaran Muralidharan、Lukas B. Woodcock、Gareth R. Eaton、Sandra S. Eaton、Gerald M. Rosen、Joseph P. Y. Kao
DOI:10.1021/acs.bioconjchem.6b00595
日期:2016.12.21
Targeted delivery of molecular probes into cells enables cellular imaging through optical and magnetic modalities. Probe molecules that are well retained by cells can accumulate to higher intracellular concentrations, and thus increase the signal-to-noise ratio of, and widen the temporal window for, imaging. Here we synthesize a paramagnetic spinprobe bearing six ionic functional groups and show that
New mono- and difunctionalized 2,2,5,5-tetramethylpyrrolidine- and Δ<sup>3</sup>-pyrroline-1-oxyl nitroxide spin labels
作者:John F. W. Keana、Kálmán Hideg、G. Bruce Birrell、Olga H. Hankovszky、George Ferguson、Masood Parvez
DOI:10.1139/v82-209
日期:1982.6.15
spin labels have been prepared. Nitroxide mesylate 5 and p-hydroxyacetophenone gave 6 which was selectively brominated with cupric bromide to give the alkylating agent 7. The more watersoluble phenacyl bromide analogue 17 was prepared either via the route 8 → 11 → 17 or else via the route15 → 16 → 11 → 17. Preliminary results indicate that toward aconitase, nitroxide alkylating agent 17 behaves similarly