Potential pancreatic imaging agents. Tellurium-123m labeled-DL-.alpha.-amino-.gamma.-(phenyltelluro)butyric acid
作者:Furn F. Knapp、Kathleen R. Ambrose、Alvin P. Callahan
DOI:10.1021/jm00139a006
日期:1981.7
first successful preparation of a 123mTe-labeled alpha-amino acid as a potential pancreatic imaging agent. Tellurium-123m labeled DL-alpha-amino-gamma-(phenyltelluro)butyric acid was prepared by basic hydrolysis of the radiolabeled 5-[beta-(phenyltelluro)ethyl]hydantoin. The hydantoin was prepared by the reacitron of 123mTe-labeled phenyltellurol, generated by sodium borohydride reduction of diphenyl ditelluride
该报告描述了第一个成功制备123mTe标记的α-氨基酸作为潜在的胰腺显像剂的方法。通过对放射性标记的5-β-(β-(苯基碲基)乙基]乙内酰脲进行碱性水解,制备碲123m标记的DL-α-氨基-γ-(苯基碲基)丁酸。乙内酰脲是由123mTe标记的苯tellolol合成的,它是由硼氢化钠用5-(β-溴乙基)乙内酰脲还原二苯基二碲化物的硼氢化钠制得的。用123mTe标记的氨基酸对大鼠进行的组织分布研究从30分钟到24小时不等,结果表明胰腺仅具有少量放射性累积。这些研究的重要结果是,已经开发出一种通用的合成方法来制备123mTe标记的氨基酸。