Fluorescent 6‐hydroxy‐ and 6,7‐dihydroxy‐4‐trifluoro‐methylcarbostyrils and formation of o‐carboxymethylated derivatives via o‐succinimide esters
作者:Georg Uray、Naresh S. Badgujar、Sona Kováčková、Wolfgang Stadlbauer
DOI:10.1002/jhet.5570450118
日期:2008.1
and 480 nm for the anion of 6 and as far as 500 and 580 nm for the dianion of 7. Dependence of fluorescence quantum yield on media and polar structure, varying from 0.02 to 0.51, is discussed. O-Alkylation of 6 with alkyl bromoacetate yields esters of type 8 in good yield. Reactive succinimidoyl (OSu) esters of type 11 were prepared after saponification to acids 9. With amino acids or their esters, peptides
荧光6,7-二甲氧基-3-三氟甲基羰基苯乙烯5的逐步脱甲基导致6-羟基衍生物6和6,7-二羟基衍生物7。苯酚形成转移激励和从370发射最大值和430nm至430和用于阴离子480nm处6和尽可能500和用于二价阴离子580nm的7。讨论了荧光量子产率对介质和极性结构的依赖性,从0.02到0.51不等。用溴代乙酸烷基酯对6进行O-烷基化可得到高产率的8型酯。皂化成酸9后制备11型反应性琥珀酰亚胺基(OSu)酯。使用氨基酸或其酯,肽和氨基葡萄糖,可以在温和的条件下在弱碱性水性介质中实现与标记的衍生物13或15的连接。