Optimization of labeling dipicolylamine derivative, N,N'-(5-(4-aminobutoxy)-1,3-phenylene)bis(methylene)bis(1-(pyridin-2-yl)-N-(pyridin-2-ylmethyl)methanamine), with three 18F-prosthetic groups as potential imaging agents for metastatic infectious disease
作者:Junling Li、Brian D. Gray、Koon Y Pak、Chin K. Ng
DOI:10.1002/jlcr.2911
日期:2012.4
The aim of this study was to develop 18 F-labeled dipicolylamine derivative (compound 1) with three 18 F-prosthetic groups, 18 F-NFP, 18 F-SFB, and 18 F-FET, which were synthesized with labeling yields of 72 ± 10%, 75 ± 8%, and 90 ± 8%, respectively. Compound 1 was then conjugated with 18 F-NFP, 18 F-SFB, and 18 F-FET, respectively. Factors such as the amount of 1, reaction temperature, and time were examined to optimize the yields. The optimal labeling conditions were found to be 1 (0.1 mg, 0.17 µmol), room temperature, and 10 min for both 18 F-NFP and 18 F-SFB; 1 (4 mg, 6.8 µmol), 100 °C, and 10 min for 18 F-FET. The total synthesis time, the overall yields, and the average specific activity were 105, 75, and 65 min; 68 ± 9%, 71 ± 11%, and 76 ±13%; 625 Ci/mmol, 853 Ci/mmol, and 3.5 Ci/mmol for 18 F-FP-1,18F-FB-1, and 18 F-FE-1, respectively (n = 5, decay-corrected based on 18F). Copyright © 2012 John Wiley & Sons, Ltd.
本研究旨在开发带有三个18F-配体集团(18F-NFP、18F-SFB和18F-FET)的18F标记二吡啶胺衍生物(化合物1),这些配体分别以72±10%、75±8%和90±8%的标记产率合成。随后,化合物1分别与18F-NFP、18F-SFB和18F-FET偶联。考察了1的用量、反应温度和时间等因素,以优化产率。最佳标记条件为1(0.1 mg,0.17 µmol),室温,10分钟,适用于18F-NFP和18F-SFB;1(4 mg,6.8 µmol),100°C,10分钟,适用于18F-FET。总合成时间、总产率和平均比活度为105、75和65分钟;68±9%、71±11%和76±13%;对于18F-FP-1、18F-FB-1和18F-FE-1分别为625 Ci/mmol、853 Ci/mmol和3.5 Ci/mmol(n=5,基于18F的衰减校正)。版权所有 © 2012 John Wiley & Sons, Ltd.