Synthesis and Evaluation of an Enantiomerically Enriched Bifunctional Chelator for<sup>64</sup>Cu-Based Positron Emission Tomography (PET) Imaging
作者:Hyun-Soon Chong、Xiang Sun、Yongliang Zhong、Kamil Bober、Michael R. Lewis、Dijie Liu、Varyanna C. Ruthengael、Inseok Sin、Chi Soo Kang
DOI:10.1002/ejoc.201301499
日期:2014.2
We report the synthesis and evaluation of an enantiomerically enriched bifunctional chelator, (S)-C-NE3TA. The bifunctional chelator was efficiently prepared by regioselective and stereoselective ring opening of an aziridinium ion. The new chiral chelator instantly and almost completely bound to 64Cu at room temperature. The corresponding 64Cu-radiolabeled complex remained intact in human serum for
我们报告了对映体富集的双功能螯合剂 (S)-C-NE3TA 的合成和评估。通过氮丙啶离子的区域选择性和立体选择性开环有效地制备了双功能螯合剂。新的手性螯合剂在室温下立即几乎完全与 64Cu 结合。相应的 64Cu 放射性标记复合物在人血清中保持完整 48 小时,没有任何可测量的转螯合,并且可以耐受严格的 EDTA 挑战 24 小时。64Cu 放射性标记的 (S)-C-NE3TA 复合物在小鼠体内是稳定的,并产生了极好的生物分布特征。体外和体内评估的结果表明,新的光学活性螯合剂是 PET 成像应用的有希望的候选者。