A novel p -aminophenylthio- and cyano- substituted BODIPY as a fluorescence turn-on probe for distinguishing cysteine and homocysteine from glutathione
作者:Qing Wang、Xiaodong Wei、Chengjie Li、Yongshu Xie
DOI:10.1016/j.dyepig.2017.09.020
日期:2018.1
as cysteine (Cys), homocysteine (Hcy), and glutathione (GSH) play vital roles in various physiological and pathological processes. In this work, a BODIPY-based fluorescent probe XCN was synthesized from multi-step reactions. We first synthesized a BODIPY derivative with a cyano and a bromine moiety attached to the 8-diphenylaminophenyl substituent of BODIPY, followed by the reaction with p-aminothiophenol
半胱氨酸(Cys),高半胱氨酸(Hcy)和谷胱甘肽(GSH)等生物硫醇在各种生理和病理过程中起着至关重要的作用。在这项工作中,由多步反应合成了基于BODIPY的荧光探针XCN。我们首先合成了一个带有氰基和一个与BODIPY的8-二苯基氨基苯基取代基相连的溴部分的BODIPY衍生物,然后在碱性条件下与对氨基硫酚反应。有趣的是,化合物XCN成功与所获得的p引入到吡咯单元的α-位之一的-氨基苯硫基部分。该反应可以构成合成具有新颖的BODIPY衍生物的有效方法,该衍生物具有与吡咯单元相连的取代基,而无需事先溴化。XCN可用作荧光开启探针,使用氰基作为识别位点选择性检测Cys和Hcy,而对氨基苯硫基部分未反应。发现XCN几乎是无荧光的,用GSH处理时,XCN仅表现出轻微的荧光增强。但是,与Cys或Hcy相互作用后,荧光强度分别提高了1081倍和1126倍。另外,XCN在水性缓冲液中,在2至10的