Synthesis, spectral characterization, and biological studies of 3,5-disubstituted- 1,3,4-oxadiazole-2(3H)-thione derivatives
作者:Tuğçe ÖZYAZICI、Fikrettin ŞAHİN、Meriç KÖKSAL
DOI:10.3906/kim-2008-44
日期:——
The reaction of 3,4-dichlorophenyl-1,3,4-oxadiazole-2(3H)-thione with piperidine derivatives via Mannich reaction was used to generate eleven novel compounds in moderate to good yields. Synthesized molecules were characterized according to their structure with 1H NMR, 13C NMR and FT-IR spectral foundations, which were compatible with literature informations. Antimicrobial activity and cytotoxicity studies were done by disc diffusion and NCI-60 sulphordamine B assay methods. The antimicrobial test results revealed that synthesized compounds have better activity against gram-positive species than gram-negative ones. A total analysis of the antibacterial, antifungal, and antiyeast activity revealed that newly synthesized compounds were really active against Bacillus cereus, Bacillus ehimensis, and Bacillus thuringiensis species. For cytotoxicity, among three different cancer cell lines (HCT116, MCF7, HUH7) compounds 5c, 5d, 5e, 5f, 5g, 5i, 5j and 5k were seemed especially effective on HUH7 cancer cell line via moderate to good activity. More significantly, against liver carcinoma cell line (HUH7) most of the compounds of the series (5c-5g and 5i-5j) have better IC50 values (IC50= 18.78 μM) than 5-Florouracil (5-FU) and also compound 5d possessed 10.1 μM value, which represents good druggable cytotoxic activity. Further, the molecules were also screened for in silico chemoinformatic and toxicity data to gather the predicted bioavailibity and safety measurements.
通过曼尼希反应,3,4-二氯苯基-1,3,4-噁二唑-2(3H)-硫酮与哌啶衍生物反应合成了十一种新型化合物,产率中等至良好。根据其结构,通过1H NMR、13C NMR和FT-IR光谱对合成分子进行了表征,这些光谱与文献信息相符。采用纸片扩散法和NCI-60甲磺酰胺B法进行了抗菌活性和细胞毒性研究。抗菌测试结果显示,合成化合物对革兰氏阳性菌的活性优于革兰氏阴性菌。对细菌、真菌和抗酵母活性的综合分析表明,新合成的化合物对蜡样芽孢杆菌、枯草芽孢杆菌和苏云金芽孢杆菌等菌种具有很高的活性。对于细胞毒性,在三种不同的癌细胞系(HCT116、MCF7、HUH7)中,化合物5c、5d、5e、5f、5g、5i、5j和5k对肝癌HUH7细胞系显示出特别有效的中等至良好活性。更显著的是,在肝癌(HUH7)细胞系中,大多数化合物(5c-5g和5i-5j)的IC50值(IC50=18.78 μM)优于5-氟尿嘧啶(5-FU),而且化合物5d的IC50值为10.1 μM,这表明其具有良好的药物诱导细胞毒性活性。此外,还对分子进行了计算机化学信息学和毒性数据的筛选,以获得预测的生物利用度和安全性指标。