NHC Gold Halide Complexes Derived from 4,5-Diarylimidazoles: Synthesis, Structural Analysis, and Pharmacological Investigations as Potential Antitumor Agents
作者:Wukun Liu、Kerstin Bensdorf、Maria Proetto、Ulrich Abram、Adelheid Hagenbach、Ronald Gust
DOI:10.1021/jm201156x
日期:2011.12.22
A series of novel neutral NHC gold halide complexes derived from 4,5-diarylimidazoles were synthesized, characterized, and analyzed for biological effects. High growth inhibitory effects in MCF-7 and MDA-MB 231 breast cancer as well as HT-29 colon cancer cell lines depended on the presence of the C4,C5-standing aromatic rings. Methoxy groups at these rings did not change the growth inhibitory properties
合成,表征和分析生物学效应的一系列新的中性NHC卤化金从4,5-二芳基咪唑合成。在MCF-7和MDA-MB 231乳腺癌以及HT-29结肠癌细胞系中的高生长抑制作用取决于存在C4,C5的芳香环的存在。这些环上的甲氧基没有改变生长抑制特性,而邻位的F取代基(5d)则增加了MCF-7和MDA-MB 231细胞的活性。氮原子上的取代基和金属的氧化态起次要作用。活性最高的溴[1,3-二乙基-4,5-双(2-氟苯基)-1,3-二氢-2 H-咪唑-2-亚烷基]金(I)(5d)的活性明显高于顺铂。除以该酶为主要靶点外,所有复合物对硫氧还蛋白还原酶(TrxR)的抑制作用(EC 50 = 374–1505 nM)均显着低于金诺芬(EC 50 = 18.6 nM)。由于核含量低,DNA相互作用参与作用方式的可能性很小。缺少的ER结合以及缺少的生长抑制和COX酶灭活的相关性也排除了这些靶标。