Radioiodinated <i>N</i>-(2-Diethylaminoethyl)benzamide Derivatives with High Melanoma Uptake: Structure−Affinity Relationships, Metabolic Fate, and Intracellular Localization
作者:Michael Eisenhut、William E. Hull、Ashour Mohammed、Walter Mier、Dorothee Lay、Wilhelm Just、Karin Gorgas、Wolf D. Lehmann、Uwe Haberkorn
DOI:10.1021/jm991079p
日期:2000.10.1
melanoma uptake and tissue selectivity, structure-activity studies for N-(2-diethylaminoethyl)benzamides with variation of phenyl substituents were performed using C57Bl/6 mice bearing B16 melanoma. Compounds 2 (4-amino-5-bromo-N-(2-diethylaminoethyl)-3-[(131)I]iodo-2-methoxybenz amide) and 6 (4-acetamido-N-(2-diethylaminoethyl)-5-[(131)I]iodo-2-methoxybenzamid e) showed at 6 h post iv injection, for example
几种放射性碘化的N-(二烷基氨基烷基)苯甲酰胺已用于黑色素瘤转移的平面闪烁显像和单光子发射计算机断层扫描(SPECT)。为了改善黑素瘤摄取和组织选择性,使用带有B16黑素瘤的C57Bl / 6小鼠进行了具有苯基取代基变化的N-(2-二乙基氨基乙基)苯甲酰胺的结构活性研究。化合物2(4-氨基-5-溴-N-(2-二乙基氨基乙基)-3-[(131)I]碘-2-甲氧基苯甲酰胺)和6(4-乙酰氨基-N-(2-二乙基氨基乙基)-5静脉注射后6小时显示-[[(131)I]碘-2-甲氧基苯甲酰胺e),例如,黑素瘤摄取分别为16.6和23.2%ID / g(平均值,n = 3)。摄取量高3-5倍(P <0。01)比文献中已知的苯甲酰胺所观察到的要好,这可能是由于2或6的尿排泄相对较慢所致。相反,缺乏MeO,Ac,AcNH或Br取代基的类似物表现出降低的肿瘤吸收和高尿酸排泄各种苯甲酰胺代谢产物的放射性。B16