Synthesis and Evaluation of New Generation Cross-Bridged Bifunctional Chelator for <sup>64</sup>Cu Radiotracers
作者:Ajit V. Dale、Gwang Il An、Darpan N. Pandya、Yeong Su Ha、Nikunj Bhatt、Nisarg Soni、Hochun Lee、Heesu Ahn、Swarbhanu Sarkar、Woonghee Lee、Phuong Tu Huynh、Jung Young Kim、Mi-Ri Gwon、Sung Hong Kim、Jae Gyu Park、Young-Ran Yoon、Jeongsoo Yoo
DOI:10.1021/acs.inorgchem.5b01386
日期:2015.9.8
Bifunctional chelators have been successfully used to construct 64Cu-labeled radiopharmaceuticals. Previously reported chelators with cross-bridged cyclam backbones have various essential features such as high stability of the copper(II) complex, high efficiency of radiolabeling at room temperature, and good biological inertness of the radiolabeled complex, along with rapid body clearance. Here, we
双功能螯合剂已成功用于构建64铜标记的放射性药物。先前报道的具有跨桥Cyclam主链的螯合剂具有各种基本特征,例如铜(II)配合物的高稳定性,室温下放射性标记的高效性以及放射性标记的配合物的良好生物惰性以及快速的体内清除作用。在这里,我们报告了开发的具有混合乙酸盐/膦酸酯侧基(PCB-TE1A1P)的新一代丙烯跨桥螯合剂,旨在将这些关键特性结合在一个螯合剂中。PCB-TE1A1P是由Cyclam合成的,具有良好的总收率。我们的螯合剂的Cu(II)配合物在动力学稳定性评估实验(例如酸性分解和循环伏安研究)中显示出良好的鲁棒性。PCB-TE1A1P的Cu(II)络合物在高酸性条件下(12 M HCl,在90°C的温度下放置8 d,在电化学研究中在-0.77 V处显示出准可逆的还原/氧化峰。PCB-TE1A1P已成功用进行了放射性标记60分钟内在60°C的乙酸盐缓冲液中包含64 Cu离子。电泳研究表明,64