Cyanopyridoimidazole/1,2-Aminothiol Click Reaction: A Novel Bioorthogonal Reaction for Synthesis of Radiotracers
作者:Yi-Chen Sun、Wei-Xin Shi、Wei-Chieh Kuo、Yi-Rong Hsiang、Wei-Lin Lo、Liang-Cheng Chen、Shiou-Shiow Farn、Ya-Fan Lin、Kuo-Ting Chen
DOI:10.1021/acs.bioconjchem.3c00496
日期:2024.1.17
We herein described the design and synthesis of the cyanopyridoimidazoles (CPIs) as new bioorthogonal click reagents toward 1,2-aminothiol groups. Kinetic and density functional theory-based studies of the synthetic compounds revealed that incorporating an electron-withdrawing substituent into the CPI scaffold lowers its lowest unoccupied molecular orbital energy, consequently increasing reactivity
我们在此描述了氰基吡啶并咪唑(CPI)作为针对 1,2-氨基硫醇基团的新型生物正交点击试剂的设计和合成。基于动力学和密度泛函理论的合成化合物研究表明,将吸电子取代基纳入 CPI 支架中会降低其最低未占据分子轨道能量,从而提高反应活性。优化后的CPI 8a在生理条件下表现出快速反应性和高稳定性,并已被证明适用于各种放射性示踪剂合成方法。基于新的生物正交反应,成功制备了[ 67 Ga]Ga标记的前列腺特异性膜抗原靶向探针,用于动物模型中前列腺癌的体内成像。