Synthesis and cytotoxic studies of some novel compounds containing 3-(1H-indol-3-yl)-1H-pyrazole molecular scaffold
作者:Datong Zhang、Rongrong Xu、Shoudong Guo、Yaling Zhu
DOI:10.1007/s11164-014-1762-y
日期:2015.9
In our efforts to develop effective treatment agents for cancer, a series of novel compounds based on 3-(1H-indol-3-yl)-1H-pyrazole scaffold and three common pharmacophores, namely thiazolidine, 1,3,4-oxadiazole, and acylpyrazole, were synthesized and evaluated for their cytotoxic activity against four human cancer cell lines. Among compounds 2a–2c and 3a–3c containing thiazolidine moiety, 2b and 3c showed moderate cytotoxic activity toward Ho-8910. The dramatic enhancement in cytotoxic activity was observed upon the introduction of a 1,3,4-oxadiazole-2-thiol moiety on 3-(1H-indol-3-yl)-1H-pyrazole scaffold. Compound 5a was the most effective against KG-1 with IC50 = 6.09 μM, which was comparable to the reference drug doxorubicin. Compound 5b was potent against HepG-2 (IC50 = 9.39 μM) and Ho-8910 (IC50 = 9.41 μM). Compound 5e exhibited IC50 value of 14.12 μM against A-549 and was more potent than other compounds in this series. Compound 5b induced the highest population of apoptotic cells (28.18 %) among the tested compounds at 10 μM. The results obtained from compounds 5 warrant their further optimization as new leads for developing new anticancer agents.
为了开发有效的癌症治疗药物,我们合成了一系列基于 3-(1H-吲哚-3-基)-1H-吡唑支架和三种常见药源(即噻唑烷、1,3,4-恶二唑和酰基吡唑)的新型化合物,并评估了它们对四种人类癌症细胞系的细胞毒活性。在含有噻唑烷分子的化合物 2a-2c 和 3a-3c 中,2b 和 3c 对 Ho-8910 具有中等程度的细胞毒活性。在 3-(1H-吲哚-3-基)-1H-吡唑支架上引入 1,3,4-恶二唑-2-硫醇分子后,细胞毒性活性显著增强。化合物 5a 对 KG-1 最有效,IC50 = 6.09 μM,与参考药物多柔比星相当。化合物 5b 对 HepG-2(IC50 = 9.39 μM)和 Ho-8910(IC50 = 9.41 μM)有效。化合物 5e 对 A-549 的 IC50 值为 14.12 μM,比该系列的其他化合物更有效。在 10 μM 的浓度下,化合物 5b 诱导的凋亡细胞数量(28.18 %)在受试化合物中最高。从化合物 5 中获得的结果证明,它们可以作为开发新抗癌剂的新线索得到进一步优化。