Synthesis and Anti-cancer Activity of Novel Thiazolidinone Analogs of 6-Aminoflavone
作者:Sudheer Moorkoth
DOI:10.1248/cpb.c15-00454
日期:——
Novel heterocyclic analogs were synthesized by combining a flavone nucleus and thiazolidinone ring in an effort to potentiate the existing anti-cancer activity of flavone. The syntheses of 6-aminoflavone, 6-amino-3-methoxyflavone, 6-amino-3-methoxy-3′,4′-dimethxyflavone and their corresponding thiazolidinone analogs were performed. Fifteen novel analogs were synthesized and evaluated for their anti-cancer activity using cell-based assay techniques and in vivo testing. As expected, the analogs improved cytotoxicity and were shown to increase the life span of cancer-bearing mice. Cytotoxicity was evaluated using 3-(4,5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assays in HeLa, MDA-MB-435, and Vero cell lines. In vivo evaluation of anti-cancer activity performed in albino mice bearing Dalton’s ascites carcinoma showed that the new analogs enhanced life span and prevented increases in body weight owing to tumor volumes. Moreover, cell-cycle analysis and Hoechst staining analysis proved the apoptotic potential of these analogs. Preliminary pharmacokinetic evaluation was carried out on the synthesized compounds to determine the lipophilicity and pKa. Lipophilicity was determined using high-performance liquid chromatography and the results showed a direct correlation between the observed anti-cancer activity and log P value, while pKa values indicated the ionizing range which is a prediction tool for solubility and permeability.
通过将黄酮核与噻唑烷二酮环结合,合成了一系列新型杂环类似物,旨在增强黄酮已知的抗癌活性。合成了6-氨基黄酮、6-氨基-3-甲氧基黄酮、6-氨基-3-甲氧基-3′,4′-二甲氧基黄酮及其相应的噻唑烷二酮类似物。合成了十五种新型类似物,并通过基于细胞的检测技术和小鼠体内的癌症检测试验,评估了它们的抗癌活性。如预期的,这些类似物提高了细胞毒性,并显示出能延长携癌小鼠的寿命。细胞毒性评估使用了3-(4,5-二甲基噻唑-2-基)-2, 5-二苯基四唑溴盐(MTT)法在HeLa,MDA-MB-435和Vero细胞系上进行。在患有Dalton腹水癌的白色小鼠中的体内抗癌活性评价表明,这些新类似物延长了生命周期并阻止了肿瘤体积导致的体重增加。此外,细胞周期分析和Hoechst染色分析证明了这些类似物的凋亡潜力。对合成的化合物进行了初步的药代动力学评价,以确定其亲脂性和pKa。通过高效液相色谱法确定亲脂性,结果显示出观察到的抗癌活性和log P值之间的直接关联,而pKa值指示了电离范围,这是预测溶解度和渗透性的工具。