Tuning the Softness of the Pendant Arms and the Polyazamacrocyclic Backbone to Chelate the <sup>203</sup>Pb/<sup>212</sup>Pb Theranostic Pair
作者:Marianna Tosato、Parmissa Randhawa、Luca Lazzari、Brooke L. McNeil、Marco Dalla Tiezza、Giordano Zanoni、Fabrizio Mancin、Laura Orian、Caterina F. Ramogida、Valerio Di Marco
DOI:10.1021/acs.inorgchem.3c02610
日期:2024.1.29
spectroscopy gave insights into the solution structures of the Pb2+ complexes, and 1H–207Pb interactions confirmed the involvement of S and/or O donors in the metal coordination sphere. Highly fluxional solution behavior was discovered when Pb2+ was coordinated to symmetric ligands (i.e., DO4S and DO2A2S) while the introduction of structural asymmetry in DO3S and DO3SAm slowed down the intramolecular dynamics
考虑使用一系列大环配体来螯合 Pb2+:1,4,7,10-四[2-(甲基硫酰)乙基]-1,4,7,10-四氮杂环十二烷 (DO4S),1,4,7-三[2-(甲基硫酰)乙基]-1,4,7,10-四氮杂环十二烷 (DO3S),1,4,7-三[2-(甲基硫烷基)乙基]-10-乙酰氨基-1,4,7,10-四氮杂环十二烷 (DO3SAm),1,7-双[2-(甲基硫酰)乙基]-1,4,7,10-四氮杂环十二烷-4,10-二乙酰酸 (DO2A2S),1,5,9-三[2-(甲基硫烷基)乙基]-1,5,9-三氮杂环十二烷 (TACD3S)、1,4,7,10-四 [2-(甲基硫酰)乙基] -1,4,7,10-四 氮杂环十三烷 (TRI4S) 和 1,4,8,11-四 [2-(甲基硫酰)乙基]-1,4,8,11-四氮杂环十四烷 (TE4S)。通过紫外-可见光和核磁共振 (NMR) 光谱,结合电位法和密度泛函理论