In the present study, eight numbers of new 3- (4-methoxy phenyl)-5-substituted phenyl-2-pyrazoline-1-carbothioamide (5a-h) have been synthesized from 1- (4-methoxy phenyl)-3- (substituted phenyl)-prop-2-en-1-one (3a-h) and structurally characterized by using FT-IR, 1H NMR, 13C NMR, Mass and Elemental analysis. The synthesized molecules were biologically evaluated for their in vitro anticancer activity against human breast adenocarcinoma (MCF-7), liver cancer (Hep-G2) and leukaemia cancer (K-562) cell line using Sulforhodamine B (SRB) bioassay technique. From the all synthesized compounds 5a, 5c, 5d, and 5e exhibited potent anticancer activity (GI50= <10µg/ml) as compared to the controlled drug 5-Fluorouracil (5-FU) (GI50=44.5µg/ml) and Adriamycin (ADR) (GI50= <10µg/ml) on MCF-7 cell lines. Besides this, all the synthesized compounds have exhibited moderate activity against human liver cancer (Hep-G2) and leukaemia cancer (K-562) cell lines. In addition, molecular docking studies were also explored in order to study the probable binding specificity into the active site of Epidermal Growth Factor Receptor tyrosine kinase (EGFR) (PDB ID: 1M17) using Molegro Virtual Docker Evaluation 2013 6.0.1 (MVD). Based on the molecular docking result, it was found that compound 5a exhibited the best interaction with the above target (i.e., EGFR) by interacting with specific amino acid residues such as: Thr 766, Gin 767, Thr 830, Cys 575, Ala 719 and Met 769.
在这项研究中,从1- (4-甲氧基苯基)-3- (取代苯基)-丙-2-烯-1-酮 (3a-h) 合成了八种新的3- (4-甲氧基苯基)-5-取代苯基-2-吡唑啉-1-羰基硫脲 (5a-h)。利用FT-IR、1H NMR、13C NMR、质谱和元素分析对这些合成分子进行了结构表征。通过Sulforhodamine B (SRB) 生物测定技术,对这些合成分子在体外抗癌活性进行了生物学评价,针对人类乳腺腺癌 (MCF-7)、肝癌 (Hep-G2) 和白血病 (K-562) 细胞系。在所有合成化合物中,5a、5c、5d 和5e 表现出强大的抗癌活性 (GI50= <10µg/ml),相比之下,对照药物5-氟尿嘧啶 (5-FU) (GI50=44.5µg/ml) 和阿霉素 (ADR) (GI50= <10µg/ml) 在MCF-7细胞系中的活性较弱。此外,所有合成化合物对人类肝癌 (Hep-G2) 和白血病 (K-562) 细胞系表现出中等活性。另外,还进行了分子对接研究,以研究这些化合物可能与表皮生长因子受体酪氨酸激酶 (EGFR) 的活性位点的结合特异性。根据分子对接结果,发现化合物5a 与上述靶点 (即EGFR) 有最好的相互作用,与特定氨基酸残基如:Thr 766、Gin 767、Thr 830、Cys 575、Ala 719 和Met 769 发生相互作用。