Synthesis and radiolabelling of Re(CO)<sub>3</sub>-<i>β</i>-elemene derivatives as potential therapeutic radiopharmaceuticals
作者:Yunfeng Ren、Yanhong Sun、Kangmin Cheng、Guifeng Liu、Yumei Shen
DOI:10.1002/jlcr.1580
日期:2009.5.15
β-Elemene, (1S, 2S, 4R)-(−)-(1-methy-1-vinyl-2,4-diisopropenyl cyclohexane) is an anticancer agent from the Traditional Chinese Herb Medicinal. Three novel Re(CO)3-β-elemene derivatives including their radioactive conjugates containing N,N,N tridentate ligands and tricarbonyl rhenium (complex 12, 13, 14) were synthesized. Their structures were characterized by infrared (IR), 1H-NMR and HRMS. Good radioactive yield (above 90%) and radioactive chemical purity with Re-188 (above 95%) were obtained for all of the three derivatives (complex 15, 16, 17). The antiproliferative activity of non-radioactive β-elemene-Re(CO)3 derivatives on Lewis lung cancer cells and HeLa cell lines were evaluated by WST-1 methods. The result shows substantial decrease in IC50 values compared with the parent compound β-elemene. The synthesis and radiosynthesis of β-elemene tricarbonyl rhenium conjugates provide the possibility to find a new kind of potential radiopharmaceuticals on β-elemene. Copyright © 2009 John Wiley & Sons, Ltd.
β-榄香烯,(1S, 2S, 4R)-(-)-(1-甲基-1-乙烯基-2,4-二异亚丙烯基环己烷)是一种中草药抗癌剂。研究人员合成了三种新型 Re(CO)3-β 烯衍生物,包括含有 N,N,N三叉配体和三羰基铼的放射性共轭物(络合物 12、13、14)。红外光谱(IR)、1H-NMR 和 HRMS 对它们的结构进行了表征。三种衍生物(复合物 15、16、17)都获得了良好的放射性收率(90%以上)和 Re-188 放射性化学纯度(95%以上)。用 WST-1 方法评估了非放射性 β-烯-Re(CO)3 衍生物对 Lewis 肺癌细胞和 HeLa 细胞系的抗增殖活性。结果表明,与母体化合物 β-榄香烯相比,其 IC50 值大大降低。β-榄香烯三羰基铼共轭物的合成和放射性合成为寻找一种新的β-榄香烯放射性药物提供了可能。Copyright © 2009 John Wiley & Sons, Ltd. All Rights Reserved.