Synthesis and biological studies of silver N-heterocyclic carbene complexes derived from 4,5-diarylimidazole
作者:Wukun Liu、Kerstin Bensdorf、Adelheid Hagenbach、Ulrich Abram、Ben Niu、Aruljothi Mariappan、Ronald Gust
DOI:10.1016/j.ejmech.2011.10.002
日期:2011.12
A novel class of silver N-heterocyclic carbene complexes (5a–f) were synthesized in high yield by reacting silver(I) oxide with 4,5-diarylimidazolium halides (4a–f). The complexes were characterized using NMR and IR spectroscopy. The structure was confirmed on the example of bromo[1,3-diethyl-4,5-bis(4-fluorophenyl)imidazol-2-ylidene]silver(I) (5c) by crystal structure analysis. The X-ray structure
通过使氧化银(I)与4,5-二芳基咪唑鎓卤化物(4a-f)反应,可以高收率合成一类新型的银N-杂环卡宾配合物(5a -f)。使用NMR和IR光谱对复合物进行表征。通过晶体结构分析,在溴[1,3-二乙基-4,5-双(4-氟苯基)咪唑-2-亚甲基]银(I)(5c)的实例上确认了结构。X射线结构表明具有配位单元的三维配位聚合物,所述重复单元由C carben -Ag 2 -Br 2 -C carben组成簇。药理研究表明,所有银络合物均具有抑制乳腺癌(MCF-7和MDA-MB-231)以及结肠癌(HT-29)细胞生长的作用。最具活性的化合物5c对MCF-7细胞的活性稍差,对MDA-MB-231细胞的活性更高,并且与顺铂对HT-29细胞的活性相当。使用所选化合物对雌激素受体(ER)结合,DNA嵌入,环氧合酶(COX)抑制和抗菌活性进行了进一步的药理研究。这些复合物仅对DNA,ER和COX酶有少量活