Synthesis of MMP inhibitor radiotracers [11C]methyl-CGS 27023A and its analogs, new potential PET breast cancer imaging agents
作者:Xiangshu Fei、Qi-Huang Zheng、Gary D. Hutchins、Xuan Liu、K. Lee Stone、Kathy A. Carlson、Bruce H. Mock、Wendy L. Winkle、Barbara E. Glick-Wilson、Kathy D. Miller、Rose S. Fife、George W. Sledge、Hui Bin Sun、Raymond E. Carr
DOI:10.1002/jlcr.570
日期:2002.5
[11C]Methyl-CGS 27023A (1a) and its analogs [11C]methyl-2-picolyl-CGS 27023A (1b), [11C]methyl-benzyl-CGS 27023A (1c), [11C]methyl-2-nitro-CGS 27023A (1d), [11C]methyl-3-nitro-CGS 27023A (1e), and [11C]methyl-4-nitro-CGS 27023A (1f), novel radiolabeled matrix metalloproteinase (MMP) inhibitors, have been synthesized for evaluation as new potential positron emission tomography (PET) breast cancer imaging agents. The appropriate precursors for radiolabeling were obtained in four to five steps from starting material amino acid D-valine with moderate to excellent chemical yields. Precursors were labeled by [11C]methyl triflate through 11C–O-methylation method at the aminohydroxyl position under basic conditions and isolated by solid-phase extraction (SPE) purification to produce pure target compounds in 40–60% radiochemical yields (decay corrected to end of bombardment), in 20–25 min synthesis time. Copyright © 2002 John Wiley & Sons, Ltd.
[11C]甲基-CGS 27023A (1a) 及其类似物 [11C]甲基-2-吡啶甲基-CGS 27023A (1b)、[11C]甲基-苯甲基-CGS 27023A (1c)、[11C]甲基-2-硝基-CGS 27023A (1d)、[11C]甲基-3-硝基-CGS 27023A (1e) 和 [11C]甲基-4-硝基-CGS 27023A (1f),是一类新型放射性标记的基质金属蛋白酶 (MMP) 抑制剂,已被合成用于评估作为新型正电子发射断层扫描 (PET) 乳腺癌成像剂的潜力。适合放射标记的前驱体通过四到五步反应从起始材料氨基酸D-缬氨酸获得,化学产率为中等到优良。前驱体通过[11C]甲基三氟甲基化在基本条件下在氨基羟基位点上进行[11C]O-甲基化,并通过固相萃取 (SPE) 纯化分离,产生纯净目标化合物,放射化学产率为40-60%(按轰击结束时的衰变校正),合成时间为20-25分钟。版权 © 2002 John Wiley & Sons, Ltd.