Two series of thiosemicarbazone-based iron chelators (twenty-seven compounds) were designed and synthesized using a microwave-assisted approach. Quinoline and halogenated phenyl were selected as parent scaffolds on the basis of a similarity search. The lipophilicity of the synthesized compounds was measured using HPLC and then calculated. Primary in vitro screening of the synthesized compounds was performed against eight pathogenic fungal strains. Only a few compounds showed moderate activity against fungi, and (E)-2-(quinolin-2-ylvinyl)-N,N-dimethylhydrazine-carbothioamide appeared to be more effective than fluconazole against most of the fungal strains tested. Antiproliferative activity was measured using a human colon cancer cell line (HCT-116). Several of the tested compounds showed submicromolar antiproliferative activity. Compounds were also tested for their activity related to the inhibition of photosynthetic electron transport (PET) in spinach (Spinacia oleracea L.) chloroplasts. The structure-activity relationships are discussed for all of the compounds.
Synthesis, crystal structure and antiproliferative mechanisms of gallium(<scp>iii</scp>) complexes with benzoylpyridine thiosemicarbazones
作者:Jinxu Qi、Taichen Liu、Wei Zhao、Xinhua Zheng、Yihong Wang
DOI:10.1039/d0ra02913k
日期:——
synthesized the corresponding Ga(III) complexes. The antitumor activity of the ligand increases with its lipophilicity, and the antitumor activity of the Ga(III) complexes is affected by the ligands. Since C6 has the highest anticancer proliferative activity (0.14 ± 0.01 μM) against HepG-2 (Human hepatocarcinoma cell line), we characterized its structure by X-ray single crystal diffraction and explored its
我们制备了六种氨基硫脲配体并合成了相应的Ga( III )配合物。配体的抗肿瘤活性随着其亲脂性的增加而增加,而Ga( III )配合物的抗肿瘤活性受配体的影响。由于C6对 HepG-2(人肝癌细胞系)具有最高的抗癌增殖活性(0.14 ± 0.01 μM),我们通过 X 射线单晶衍射对其结构进行了表征,并探索了其抗增殖机制。抗肿瘤机制结果表明,Ga( III )复合物( C6 )通过调节细胞周期相关蛋白(Cdk 2、cyclin A和cyclin E)的表达,促进HepG-2细胞周期阻滞在G1期。镓(Ⅲ) 复合物 ( C6 ) 通过消耗细胞内铁、增强细胞内活性氧 (ROS)、激活 caspase-3/9、释放细胞色素和凋亡蛋白酶激活因子-1 (apaf-1) 来促进细胞凋亡。