Cytotoxic Gold(I) N-heterocyclic Carbene Complexes with Phosphane Ligands as Potent Enzyme Inhibitors
作者:Riccardo Rubbiani、Luca Salassa、Andreia de Almeida、Angela Casini、Ingo Ott
DOI:10.1002/cmdc.201400056
日期:2014.6
Organometallic goldcomplexes with N‐heterocyclic carbene (NHC) ligands have been demonstrating promising properties as novel anticancer agents. Gold(I) NHCcomplexes containing different phosphanes as secondary ligands were shown to trigger strong cytotoxic effects in cancer cells, and their effective uptake into the cells was quantified by atomic absorption spectroscopy. Moreover, the new compounds
Silver(I), mercury(II) and palladium(II) complexes of functionalized N-heterocyclic carbenes: Synthesis, structural studies and catalytic activity
作者:Qing-Xiang Liu、Hui-Long Li、Xiao-Jun Zhao、Shu-Sheng Ge、Meng-Chao Shi、Gang Shen、Yan Zang、Xiu-Guang Wang
DOI:10.1016/j.ica.2011.07.007
日期:2011.10
3-diethylbimy) 6 Ag 4 I 3 ]I ( 2 ), [(1-benzyl-3-picolylbimy)Ag 2 Br 2 ] n ( 3 ), [(1-benzyl-3-picolylbimy)HgI(CH 2CN)] 2 ( 4 ), [(1-picolyl-3- n propylbimy) 2 Hg][Hg 2 I 6 ]} n ( 5 ) and [(1,3-dipicolylbimy)PdCl]Cl ( 6 ), as well as one anionic complex [1,3-diethylbimidazolium] 2 [HgI 4 ] ( 1 ) (bimy = benzimidazol-2-ylidene), have been prepared and characterized. Interestingly, a wind wheel-like Ag 4 I 3
摘要一系列NHC银(I),汞(II)和钯(II)配合物[[(1,3-diethylbimy)6 Ag 4 I 3] I(2),[(1-苄基-3-吡啶甲基) Ag 2 Br 2] n(3),[(1-苄基-3-吡啶基双甲基)HgI(CH 2 CN)] 2(4),[(1-吡啶基-3-吡啶基双甲基)2 Hg] [Hg 2 I 6]} n(5)和[(1,3-dipicolylbimy)PdCl] Cl(6),以及一种阴离子络合物[1,3-diethylbimidazolium] 2 [HgI 4](1)(bimy =苯并咪唑-已经制备并表征了2-亚烷基)。有趣的是,形成了2的风轮状Ag 4 I 3排列,生成了3中包含12元大金属环和四边形Ag 2 Br 2单元的一维聚合物链,并生成了去质子化乙腈([CH 2 CN] −)中有4个参与与汞(II)原子的配位。在配合物1-6的晶体包装中,2D超分子层或
Gold(I) NHC Complexes: Antiproliferative Activity, Cellular Uptake, Inhibition of Mammalian and Bacterial Thioredoxin Reductases, and Gram-Positive Directed Antibacterial Effects
作者:Claudia Schmidt、Bianka Karge、Rainer Misgeld、Aram Prokop、Raimo Franke、Mark Brönstrup、Ingo Ott
DOI:10.1002/chem.201604512
日期:2017.2.3
Goldcomplexes with N‐heterocycliccarbene (NHC) ligands represent a promising class of metallodrugs for the treatment of cancer or infectious diseases. In this report, the synthesis and the biological evaluation of halogen‐containing NHC‐AuI‐Cl complexes are described. The complexes 1 and 5 a–5 f displayed good cytotoxic activity against tumor cells, and cellular uptake studies suggested that an intact
具有N杂环卡宾(NHC)配体的金配合物代表了用于治疗癌症或传染病的一类有前景的金属药物。在本报告中,描述了含卤素的NHC-Au I - Cl复合物的合成和生物学评估。配合物1和5 - 5 F显示针对肿瘤细胞的良好的细胞毒活性,和细胞摄取的研究表明,完整的Au-NHC片段是用于高量的金属和配位体NHC两者的积累是必不可少的。但是,生物利用度受到细胞培养基中血清成分的不利影响,并受到复合物可能的转化的影响。一个例子(5 d)有效地诱导了过表达长春新碱和耐柔红霉素的P-糖蛋白的细胞凋亡,该蛋白过表达了Nalm-6白血病细胞。用该化合物进行的细胞吸收研究表明,野生型和抗性的Nalm-6细胞均积累了相当数量的金,这表明该金药物并未被P-糖蛋白或其他外排转运蛋白排泄。对于所有的金配合物,都证实了对哺乳动物和细菌硫氧还蛋白还原酶(TrxR)的有效抑制。对金配合物的抗菌筛选显示出对革兰氏阳性菌株的特别高的活性,反映出它们对完整的Trx
<i>N</i>,<i>N</i>-Dialkylbenzimidazol-2-ylidene platinum complexes – effects of alkyl residues and ancillary<i>cis</i>-ligands on anticancer activity
Benzimidazol-2-ylidene platinum complexes exhibit anticancer activity, which is tuneablevia N-alkyl residues and ancillary ligands and is different from that of cisplatin.
Mechanistic Study of a Switch in the Regioselectivity of Hydroheteroarylation of Styrene Catalyzed by Bimetallic Ni-Al through CH Activation
作者:Wen-Ching Chen、Ying-Chieh Lai、Wei-Chun Shih、Ming-Shiuan Yu、Glenn P. A. Yap、Tiow-Gan Ong
DOI:10.1002/chem.201400303
日期:2014.6.23
previously reported a highly efficient protocol for bimetallicNi–Al‐catalyzedhydroheteroarylation of styrene with benzimidazole based on CH bond activation. We have now delineated the mechanism of this process, providing a rationale for an observed switch in regioselectivity in the presence of the Lewis acid, AlMe3. The present mechanisticstudy gives insights for the rational development of catalysts