Sydnone‐Cyanines as Clickable Probes for Fluorescent Labelling
作者:Kim Anh Nguyen、Emilie Lesur、Maxime Ribéraud、Antoine Sallustrau、Davide Audisio、Frédéric Taran
DOI:10.1002/hlca.202200187
日期:2023.3
The synthesis of four clickable sydnone-heptamethine cyanine derivatives is described in this article. The synthetic route is based on a palladium-cross coupling reactions of sydnone boronates affording the desired sydnone-cyanine conjugates in only five steps. These compounds were shown to react smoothly with cyclooctynes to form the corresponding pyrazoles clicked products quantitatively at room
本文介绍了四种可点击的 sydnone-heptamethine 花青衍生物的合成。该合成路线基于 sydnone 硼酸盐的钯交叉偶联反应,仅需五个步骤即可提供所需的 sydnone-花青偶联物。这些化合物显示出与环辛炔顺利反应,在室温下定量形成相应的吡唑点击产物,速率常数高达 18 m -1 ⋅ s -1,为(生物)分子的双正交荧光标记提供有趣的新工具。还描述了 sydnone 和吡唑花青的荧光特性。