Copper-catalysed ‘click’ chemistry is a highly utilised technique for radiolabelling small molecules and peptides for imaging applications. The usefulness of these reactions falls short, however, when metal catalysis is not a practically viable route; such as when using metal chelates as radioligands. Here, we describe a method for carrying out ‘click-type’ radiochemistry in the presence of DOTA chelates, by combining 68Ga radiolabelling techniques with well-established bioorthogonal reactions, which do not rely upon metal catalysis.
铜催化的“点击”
化学是一种在成像应用中对小分子和肽进行放射性标记的高度利用的技术。然而,当
金属催化不是一条实际可行的路线时,这些反应的实用性就不足了。例如当使用
金属螯合物作为放射性
配体时。在这里,我们描述了一种在 DOTA 螯合物存在下进行“点击型”放射
化学的方法,该方法将 68Ga 放射性标记技术与成熟的
生物正交反应相结合,该反应不依赖于
金属催化。