作者:Aleksandra Grzelakowska、Jolanta Kolińska、Małgorzata Zakłos-Szyda、Jolanta Sokołowska
DOI:10.1016/j.jphotochem.2019.112153
日期:2020.1
Two novel derivatives of xanthone (9H-xanthen-9-one, dibenzo-γ-pyrone) containing a maleimide moiety have been synthesized. Their properties were characterized by the combination of NMR, MS, electronic absorption and fluorescence spectroscopy. The reactivity of these compounds toward l-Cys as well other analytes was determined. The results show that the novel derivatives of xanthone demonstrate a high
合成了含有马来酰亚胺部分的两种新的of吨酮衍生物(9 H-黄嘌呤-9-酮,二苯并-γ-吡喃酮)。通过NMR,MS,电子吸收和荧光光谱相结合来表征它们的性质。确定了这些化合物对1- Cys以及其他分析物的反应性。结果表明,x吨酮的新型衍生物显示出高的“开启”荧光响应和对l-半胱氨酸的选择性,并具有在生理条件下充当l-半胱氨酸探针的潜力。2-马来酰亚胺基蒽酮(4a)和2,7-二马来酰亚胺基蒽酮(4b)与l的反应-Cys导致荧光产物的形成。在存在L-Cys的情况下,探针4a和4b的荧光强度分别大大增强了25倍和60倍。最后,探针4a - 4b用于检测人细胞系HeLa中的硫醇。