Bioconjugatable Azo-Based Dark-Quencher Dyes: Synthesis and Application to Protease-Activatable Far-Red Fluorescent Probes
作者:Arnaud Chevalier、Cédrik Massif、Pierre-Yves Renard、Anthony Romieu
DOI:10.1002/chem.201203427
日期:2013.1.28
We describe the efficient synthesis and one‐step derivatization of novel, nonfluorescent azo dyes based on the Black Hole Quencher‐3 (BHQ‐3) scaffold. These dyes were equipped with various reactive and/or bioconjugatable groups (azido, α‐iodoacetyl, ketone, terminal alkyne, vicinal diol). The azido derivative was found to be highly reactive in the context of copper‐catalyzed azide–alkyne cycloaddition
我们描述了基于黑洞Quencher-3(BHQ-3)支架的新型非荧光偶氮染料的高效合成和一步衍生。这些染料配备了各种反应性和/或生物结合性基团(叠氮基,α-碘乙酰基,酮,末端炔烃,邻二醇)。发现叠氮衍生物在铜催化的叠氮化物-炔烃环加成(CuAAC)反应中具有很高的反应活性,可以轻松合成第一批水溶性(磺化衍生物)和醛改性的BHQ-3染料,直接常规偶氮偶联反应无法制备。通过形成稳定的肟或硫醚键,可以轻松地将含醛和α-碘乙酰基的荧光猝灭剂与含氨氧基和半胱氨酸的肽偶联。