Convenient Synthesis and Evaluation of a Heptadentate Bifunctional Ligand for Radioimmunotherapy Applications
作者:Hyun-Soon Chong、Xiang Sun、Pengfei Dong、Chi Soo Kang
DOI:10.1002/ejoc.201101063
日期:2011.11
An efficient synthetic route to a bifunctional chelating agent C-NE3TA-NCS for antibody-targeted radioimmunotherapy (RIT) applications was developed. Various synthetic methods centered on the key reaction steps including bimolecular cyclization, ring opening reactions of aziridine and aziridinium cations, and reductive aminiation were explored to optimize the preparation of a tetraaza-based chelate
开发了一种用于抗体靶向放射免疫疗法 (RIT) 应用的双功能螯合剂 C-NE3TA-NCS 的有效合成路线。探索了以关键反应步骤为中心的各种合成方法,包括双分子环化、氮丙啶和氮丙啶阳离子的开环反应以及还原胺化,以优化四氮杂基螯合物 TANPA 和 C-NE3TA 类似物的制备。七齿 C-NE3TA-NCS 与肿瘤靶向抗体偶联,并与六齿 C-NOTA-NCS 进行比较,用于与镧系元素进行 RIT 的放射性标记反应动力学。与 C-NOTA 抗体偶联物相比,C-NE3TA 抗体偶联物与 90Y 的络合动力学显着增强。