Synthesis, Spectroscopic Properties, and Biological Applications of Eight Novel Chlorinated Fluorescent Proteins-labeling Probes
作者:Xianglong Wu、Min Tian、Wutu Fan、Yalei Pan、Yuankun Zhai、Yinbo Niu、Chenrui Li、Tingli Lu、Qibing Mei
DOI:10.1007/s10895-014-1351-x
日期:2014.5
Eight novel chlorinated fluorescent proteins-labeling probes with a linker and reactive group were prepared in 7 steps by the reaction of chlorinated resorcinols with 3, 6-dichloro-4-carboxyphthalic anhydride in the presence of methanesulfonic acid. Structures of target compounds and intermediates were determined via IR, MS, 1H NMR and element analysis. The spectral properties of the chlorinated fluoresceins
通过氯化间苯二酚与 3, 6-dichloro-4-carboxyphthalic anhydride 在甲磺酸存在下的反应,分 7 个步骤制备了八种带有接头和反应基团的新型氯化荧光蛋白标记探针。目标化合物和中间体的结构通过IR、MS、1H NMR和元素分析。研究了氯化荧光素的光谱特性。这些荧光探针在 508-536 nm 处显示吸收峰,在 524-550 nm 处显示出荧光峰。发现它们在长波长处具有吸收和发射最大值以及高荧光量子产率。随着氯的增加,氯化荧光素的发射光谱向长波长移动。这些探针用于细胞的荧光成像,以研究它们是否可以与细胞结合。活细胞的荧光成像显示它们位于细胞核中。然而,它们位于化学固定细胞的细胞质中。这些探针将是制备稳定荧光偶联物的有用试剂。