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3-三甲基硅苄胍的合成及其125I标记
Synthesis of 3-Trimethylsilylbenzylguanidine as Precursor for 125I Labeling
【摘要】 以3-溴甲苯为起始物,通过5步反应合成可用于放射性碘(砹)标记的3-三甲基硅苄胍,并用核磁共振(NMR)、质谱(MS)、高效液相(HPLC)等对产物进行了表征。以此化合物为前体,对其进行了125I标记1。25I-MIBG的标记率达66.7%,放化纯度>98%。标记物在室温下放置3 d后,放化纯度无明显变化,表明125I-MIBG具有较高的体外稳定性。
【Abstract】 3-trimethylsilylbenzylguanidine,a precursor for 125,131I-MIBG or 211At-MABG was synthesized in five steps using 3-bromotoluene as starting materials,and was characterized by NMR,MS and HPLC.With this precursor,free-carrier 125I-MIBG was obtained with a labeling yield of 66.7% and radiochemical purity of more than 98% after purified using HPLC.Even stayed for 3 d at room temperature,the 125I-MIBG maintains constantly stable in vitro,with radiochemical purity of more than 95%.
【关键词】 3-三甲基硅苄胍;
合成;
125,131I;
标记;
【Key words】 3-trimethylsilylbenzylguanidine; synthesis; 125,131I; labeling;
【Key words】 3-trimethylsilylbenzylguanidine; synthesis; 125,131I; labeling;
【基金】 国家自然科学基金资助项目(30400113)
- 【文献出处】 原子能科学技术 ,Atomic Energy Science and Technology , 编辑部邮箱 ,2007年06期
- 【分类号】TQ463
- 【被引频次】1
- 【下载频次】92