近年来,结核病(TB)已成为最重要的公共卫生问题之一。抗生素治疗仍然是结核病控制策略的支柱,但分枝杆菌耐药性的增加敲响了警钟,需要开发新药以改善治疗结果。在这里,为了寻找新型有效的抗结核药物,我们通过单分子结构的多组分分子杂交方法设计并合成了一系列新型取代苯并咪唑烯丙肼基甲基噻唑衍生物。我们的设计策略涉及通过缩合反应组装抗结核药效团片段苯并咪唑、2-氨基噻唑和取代的α,β-不饱和酮。所有新合成的化合物均通过核磁共振和质谱数据进行了全面表征,并评估了针对结核分枝杆菌H37Ra 菌株的体外生物活性。从生物学评价数据中,我们鉴定了一些有效的化合物,其中8g和7e是最活跃的化合物(均具有2.5 μg mL -1的MIC值)。此外,化合物8g表现出较低的细胞毒性。我们认为化合物8g可以作为进一步先导化合物优化研究的化学探针,总体目标是开发新型有效的抗结核药物。
2-acetyl benzimidazole was allowed to react with substituted aromatic aldehydes to get desired intermediate chalcones (2a-g), the cyclocondensation of these intermediates with hydrazine hydrate and phenyl hydrazine in two separate reactions yielded pyrazoline derivatives (3a-g & 4a-g respectively). Among the synthesize compounds, six compounds were granted NSC code and screened at National Cancer Institute (NCI), USA for anticancer activity at a single high dose (10(-5) M) in full NCI 60 cell panel. Among the selected compounds, (4f) 2-[5-(3,4-dimethoxyphenyl)-1-phenyl-4,5-dihydro-1H-3-pyrazolyl]-1H-benzimidazole (NSC 748326) was found to be the most active candidate of the series and selected for further evaluation at five dose level screening. (C) 2009 Elsevier Masson SAS. All rights reserved.
10.17344/acsi.2022.7314
作者:Yeşilçayır, Elif、Çelik, İsmail、Şen, Hasan Tahsin、Gürpınar, Suna Sibel、Eryılmaz, Müjde、Ayhan-Kılcıgil, Gülgün