同位素 ›› 2010, Vol. 23 ›› Issue (4): 225-229.DOI: 10.7538/tws.2010.23.04.0225

• 放射性药物和标记化合物 • 上一篇    下一篇

4-甲基咪唑双膦酸的合成及其99Tcm标记

翟好真1,2;罗世能2,1;王燕1,2;邱玲2;林建国2;夏咏梅1   

  1. 1.江南大学 化学与材料工程学院,江苏 无锡214122;2.江苏省原子医学研究所,卫生部核医学重点实验室,江苏省分子核医学重点实验室,江苏 无锡214063
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-11-20 发布日期:2010-11-20

Synthesis of M4IDP and Optimum Labeling Conditions of 99Tcm-M4IDP

ZHAI Hao-zhen1,2;LUO Shi-neng2,1;WANG Yan1,2;QIU Ling2;LIN Jian-guo2;XIA Yong-mei1   

  1. 1.College of Chemical and Material Engineering, Jiangnan University, Wuxi 214122,China;2.Jiangsu Institute of Nuclear Medicine; Key Laboratory of Nuclear Medicine, Ministry of Health;Jiangsu Key Laboratory of Molecular Nuclear Medicine, Wuxi 214063,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-11-20 Published:2010-11-20

摘要: 以4-甲基咪唑为原料,通过N-烷基化、酯水解和磷酸酰化三步反应,合成1-羟基-2-(4-甲基-1H-咪唑基)-乙烷-1,1-双膦酸(M4IDP),目标产物和重要中间体通过IR、MS及1H NMR进行结构鉴定;采用Na99TcmO4标记M4IDP,得到标记物99Tcm-M4IDP,并测定其体外稳定性。结果显示,标记物的最佳标记条件为:反应时间30 min,反应体系pH为6,SnCl2·2H2O用量100 μg,配体用量5 mg。在此条件下,标记率>95%,室温下存放6 h,放化纯度>95%,说明99Tcm-M4IDP具有较好的体外稳定性。

关键词: 99Tcm, 标记, 双膦酸, M4IDP

Abstract: 1-Hydroxy-2-(4-methyl-1H-imidazoleyl)-ethylidene-1,1-bisphosphonic(M4IDP)was prepared by three steps of N-alkylation、ester hydrolation and phosphoric acid acylation from the raw material 4-methyl-1H- imidazole. The structures of intermediate and target compounds were identified by Elemental Analysis、IR、MS and 1H NMR. Then M4IDP was directly labeled by Na99TcmO4 to afford 99Tcm-M4IDP. The results showed that the best labeling conditions were 30 minutes reaction time, pH 6,100 μg SnCl2·2H2O, and 5 mg M4IDP. In this condition, the labeling yield was more than 95% and 99Tcm-M4IDP showed good biological stability in vitro.

Key words: 99Tcm, labeling, bisphosphonic, M4IDP