Tuning the Framework of Thioether-Functionalized Polyazamacrocycles: Searching for a Chelator for Theranostic Silver Radioisotopes
作者:Marianna Tosato、Sara Franchi、Marco Dalla Tiezza、Laura Orian、Thomas Gyr、André Alker、Giordano Zanoni、Paolo Pastore、Alberto Andrighetto、Ulli Köster、Mikael Jensen、Helmut Mäcke、Mattia Asti、Valerio Di Marco
DOI:10.1021/acs.inorgchem.3c02456
日期:2023.12.18
insights into the coordination environment of these complexes, suggesting that all of the donor atoms are generally involved in the metal coordination. However, the modifications of the macrocycle topology alter the dynamic binding of the pendant arms or the conformation of the ring around the metal center. Combined pH/pAg-potentiometric and spectroscopic experiments revealed that the 12-member N4 backbone
Silver-111 是一种极具吸引力的非常规候选药物,可用于靶向癌症治疗以及单光子发射计算机断层扫描,并且可以与 silver-103 相补充,用于正电子发射断层扫描无创诊断程序。然而,迄今为止,缺乏能够与肿瘤寻找载体形成稳定复合物的螯合剂阻碍了它们的体内应用。本研究对一系列含硫结构同系物,即1,4,7-三[2-(甲基硫基)乙基)]-1,4,7-三氮杂环壬烷(NO3S)、1,5 ,9-三[2-(甲硫基)乙基]-1,5,9-三氮杂环十二烷(TACD3S),1,4,7,10-四[2-(甲硫基)乙基]-1,4,7,10-使用四氮杂环十三烷 (TRI4S) 和 1,4,8,11-四[2-(甲硫基)乙基]-1,4,8,11-四氮杂环十四烷 (TE4S) 评估不同多氮杂大环主链对 Ag +络合的影响。这些大环化合物的性能还与之前报道的 Ag + /[ 111 Ag]Ag + -螯合剂 1,4,7,10-四[2-(甲硫基)乙基]-1