Design, synthesis and evaluation of a novel glutamine derivative (2<i>S</i>,4<i>R</i>)-2-amino-4-cyano-4-[<sup>18</sup>F]fluorobutanoic acid
作者:Song Liu、Renbo Wu、Yuli Sun、Karl Ploessl、Yan Zhang、Yajing Liu、Zehui Wu、Lin Zhu、Hank F. Kung
DOI:10.1039/d0nj00410c
日期:——
agents is useful for tumor diagnosis and treatment. Herein, a novel glutamine derivative, (2S,4R)-2-amino-4-cyano-4-[18F]fluorobutanoic acid, (2S,4R)-4-[18F]FCABA ([18F]1), was designed and synthesized. Its absolute configuration was determined by analyzing the single crystal of its derivative. The total synthesis time was 120 min from the end-of-bombardment, and the non-decay-corrected radiochemical
谷氨酰胺是肿瘤增殖的重要营养来源。设计新的谷氨酰胺代谢PET显像剂可用于肿瘤的诊断和治疗。在这里,一种新型的谷氨酰胺衍生物,(2 S,4 R)-2-氨基-4-氰基-4- [ 18 F]氟丁酸,(2 S,4 R)-4- [ 18 F] FCABA([ 18 F] 1),被设计和合成。通过分析其衍生物的单晶确定其绝对构型。从轰炸结束起,总合成时间为120分钟,[ 18 F] 1的未衰减校正的放射化学产率约为10%(n= 3)。使用MCF-7细胞对[ 18 F] 1进行的体外分析表明,它利用了类似于(2 S,4 R)-4- [ 18 F] FGln的氨基酸转运系统。生物分布和小动物微型PET成像显示[ 18 F] 1在60分钟的时间点具有很高的肿瘤与肌肉比率。通过使用不同的水解条件,中间体[ 18 F] 7可以选择性地转化为[ 18 F] 1,(2 S,4 R)-4- [ 18 F] FGln或(2