Tetrazine-induced activation of a trimethyl lock as a click-to-release system for protected doxorubicin
作者:Julia Friederich、Chunfa Xu、Patrick Raunft、Hazel L. S. Fuchs、Mark Brönstrup
DOI:10.1039/d3cc01334k
日期:——
trimethyl lock (TML) lactonization with the bioorthogonal inverse electron demand Diels–Alder (IEDDA) reaction of a vinyl ether and a tetrazine. Kinetic studies were carried out on a vinyl phenol model system with six tetrazines using NMR and UV/Vis spectroscopy, revealing that within the three step sequence the IEDDA reaction was rate-limiting. The reaction rates were enhanced by increasing the electrophilicity
我们在此报告了一种新型化学触发的点击释放系统,该系统结合了三甲基锁 (TML) 内酯化与乙烯基醚和四嗪的生物正交逆电子需求 Diels-Alder (IEDDA) 反应。使用 NMR 和 UV/Vis 光谱对具有六个四嗪的乙烯基苯酚模型系统进行了动力学研究,揭示了在三步序列中 IEDDA 反应是限速的。通过增加四嗪的亲电子性提高反应速率,同时平衡四嗪的反应性和稳定性。抗癌药物多柔比星与乙烯基修饰的 TML 结合。它随后从乙烯基-TML中解放出来由 1,2,4,5-四嗪-3,6-二羧酸二甲酯触发,然后通过 NMR 定量,从而为四嗪/TML 点击释放系统提供概念验证。此外,可以显示反应在生理条件下的适用性。