Three series of 6-aryl-2-methylnicotinohydrazides 4a–i, N′-arylidene-6-(4-bromophenyl)-2-methylnicotino hydrazides 7a–f, and N′-(un/substituted 2-oxoindolin-3-ylidene)-6-(4-fluorophenyl)-2-methylnicotinohydrazides 8a–c were synthesized and evaluated for their potential in vitro antimycobacterial activity against M. tuberculosis. The results showed that isatin hydrazides 8a–c are remarkably more active than the parent hydrazide 4c. Hydrazides 8b and 8c exhibited the highest activity among all the tested compounds (MIC = 12.5 and 6.25 µg/mL, respectively). Compounds 8b and 8c were also devoid of apparent cytotoxicity to HT-29, PC-3, A549, HepG2 and MCF-7 cancer cell lines. Besides, 8b and 8c showed good drug-likeness scores of 0.62 and 0.41, respectively. Those two isatin hydrazides could offer an excellent framework for future development to obtain more potent antitubercular agents. The SAR study suggested that lipophilicity of the synthesized derivatives is a crucial element that accounts for their antimycobacterial activity. Finally, a theoretical kinetic study was established to predict the ADME of the active derivatives.
合成了三系列6-芳基-2-甲基
烟碱酰
肼4a–i、N'-芳亚甲基-6-(4-
溴苯基)-2-甲基
烟碱酰
肼7a–f和N'-(未/取代的2-氧代
吲哚啉-3-亚甲基)-6-(4-
氟苯基)-2-甲基
烟碱酰
肼8a–c,并评估了它们对结核杆菌的体外抗菌活性。结果显示,
靛红酰
肼8a–c相较于母体酰
肼4c活性显著更高。酰
肼8b和8c在所有测试化合物中显示出最高的活性(MIC分别为12.5和6.25 µg/mL)。化合物8b和8c对HT-29、PC-3、A549、HepG2和MCF-7癌
细胞系也无明显细胞毒性。此外,8b和8c显示出良好的类药性得分,分别为0.62和0.41。这两个
靛红酰
肼为未来开发更强效的抗结核药物提供了极佳的基础。
SAR研究表明,合成衍
生物的亲脂性是影响其抗结核活性的关键因素。最后,建立了理论动力学研究来预测活性衍
生物的A
DME。