A series of phenylbipyridinylpyrazoles was synthesized through the reaction of 2-(4-(2-chloropyridin-4-yl)-3-(3-methoxy-5-methylphenyl)-1H-pyrazol-1-yl)acetonitrile (4) with different 6-substituted pyridine-3-ylboronic acids. The final compounds 5a–j were screened at 10 µM against over 60 tumor cell lines at the U.S. National Cancer Institute (NCI). In light of the NCI results, compounds 5c and 5h showed a broad spectrum of activity against NCI cell lines with mean growth of 53% and 58%, respectively. Compound 5e behaved differently as it showed high degree of selectivity and potency by inhibiting 96% of growth of leukemia SR cell line at 10 µM. Standard COMPARE analyses were performed at the GI50 level and the results exhibit high correlation in the form of pairwise correlation coefficient (PCC) of more than 0.6 between three of the current compounds and three standard known anticancer agents. Compound 5e demonstrated high correlation levels with merbarone (NSC S336628) with a PCC value of 0.631. Compound 5h showed a considerably high PCC value of 0.626 with dichloroallyl lawsone, while compound 5i, showed PCC values of 0.601 and 0.604 with both dichloroallyl lawsone and N,N-dibenzyldaunomycin (NSC S268242), respectively. These three standard agents have anticancer activity via two major mechanism of actions, inhibition of topoisomerase II and inhibition of biosynthesis of pyrimidine nucleotides, therefore, compounds 5a–j are promising therapeutic agents for targeting different human malignancies. Prediction of drug-likeness and toxicity of these newly synthesized derivatives were also considered.
一系列苯基双
吡啶基
吡唑化合物通过2-(4-(2-
氯吡啶-4-基)-3-(3-甲氧基-5-甲基苯基)-1H-
吡唑-1-基)
乙腈(4)与不同的6-取代
吡啶-3-基
硼酸的反应合成。最终化合物5a–j在美国国家癌症研究所(NCI)以10 µM的浓度筛选了超过60种肿瘤
细胞系。根据NCI的结果,化合物5c和5h对NCI
细胞系展现出广泛的活性,平均抑制率分别为53%和58%。化合物5e的表现有所不同,其在10 µM浓度下对白血病SR
细胞系的生长抑制率达到96%,表现出高度选择性和效能。标准COMPARE分析在GI50
水平上进行,结果显示当前三种化合物与三种已知抗癌药物之间的成对相关系数(
PCC)高于0.6。化合物5e与美巴龙(NSC S336628)表现出较高的相关性,
PCC值为0.631。化合物5h与二
氯烯丙基溶碱素的
PCC值为0.626,而化合物5i与二
氯烯丙基溶碱素和N,N-二苄基道努霉素(NSC S268242)的
PCC值分别为0.601和0.604。这三种标准药物通过两种主要机制发挥抗癌活性,即抑制拓扑异构酶 II 和抑制
嘧啶核苷酸的
生物合成,因此,化合物5a–j是针对不同人类恶性肿瘤的有希望的治疗剂。此外,还考虑了这些新合成衍
生物的药物相似性和毒性预测。