作者:Éva Müller、Tamás Kálai、József Jekö、Kálmán Hideg
DOI:10.1055/s-2000-7115
日期:——
Synthesis of spinlabelled chromone 4a is described from paramagnetic acid derivatives 1a, 1b by the conventional BakerVenkataraman procedure. Different hydroxylated paramagnetic chromone derivatives 8, 9, 12a, and 12b could be obtained by different one-pot reactions and a glycoside of 5-hydroxy-2-(1-oxyl2,5-dihydro-2,2,5,5-tetramethyl-1H-pyrrol-3-yl) chromone radical 14b was synthesized.
Synthesis of 3-Substituted 2,5-Dihydro-2,2,5,5-tetramethyl-1<i>H</i>-pyrrol-1-yloxyl Radicals, Useful for Spin-Labelling of Biomolecules
作者:H. Olga Hankovszky、Kálmán Hideg、Gyula Jerkovich
DOI:10.1055/s-1989-27306
日期:——
Synthesis and some reactions of 3-substituted 2,5-dihydro-2,2, 5,5-tetramethyl-1H-pyrrol-1-yloxyl radicals (nitroxyl radicals, nitroxides) activated with carbonyl, cyano, or ester electron-withdrawing groups have been described. These compounds are useful new SH-reagents for spin-labelling of biomolecules.