作者:Ileana Dragutan、Agneta Caragheorgheopol、Filip Chiraleu、Rolf J. Mehlhorn
DOI:10.1016/0968-0896(96)00150-2
日期:1996.10
Stable free mono- and diradicals containing reactive primary or secondary amino groups in the side-chain have been synthesized by transesterification of amino-substituted esters with paramagnetic alcohols or from spin-labeled acid derivatives and amines. In the second approach the new radical 18 (1-oxyl-3-(2-bromoethoxycarbonyl)-2,2,5,5-tetramethylpyrroline) is proposed as an efficient alkylating species
通过氨基取代的酯与顺磁性醇的酯交换反应或由自旋标记的酸衍生物和胺合成了在侧链中含有反应性伯氨基或仲氨基的稳定的游离单价或双价基团。在第二种方法中,提出了新的自由基18(1-氧基1-3(2-溴乙氧基羰基)-2,2,5,5-四甲基吡咯啉)作为有效的烷基化物质。所描述的氮氧化物是对pH敏感的自旋探针和自旋标记,可能对化学和生物学中的多种ESR应用有用。新的自旋标记酪胺16(N-(1-氧基-1-羰基-2,2,5,5-四甲基-吡咯啉)酪胺)已成功用于蛋白质氧化损伤的新型测定中。