Design, Synthesis and Molecular Properties Prediction of Novel Quinazoline Derivatives as Potent Antibacterial Agents
作者:S.V. Eswararao、V. Venkataramireddy、M. Srinivasareddy、Pramod Kumar
DOI:10.14233/ajchem.2017.20513
日期:——
A novel series of compounds were synthesized by C-C bond formation of substituted quinazolinones (1) with substituted boronic acids (2) to get 2,4-disubstituted quinazoline (3a-3n) in good to excellent yields. The structures of the new compounds were confirmed by IR, 1H NMR, 13C NMR and mass spectral data. An antibacterial and antifungal activity screening results showed that compounds 3b, 3e, 3i and 3l possess excellent activity against Gram (+), Gram (-) bacteria (S. aureus, Klebsiella species, P. aeruginosa) compared to standard drugs. 3l, 3g and 3n showed better antifungal activity against A. nigeri and C. albicans organisms. In this investigation, the target compounds 3a-3n were subjected to in silico molecular properties prediction and drug likeness by employing Molinspiration (Molinspiration, 2014) and MolSoft (MolSoft, 2007) property explorer tool kits for predicting their high oral bioavailability.
通过取代的硼酸(2)与取代的喹唑啉酮(1)形成 C-C 键,合成了一系列新型化合物,得到了 2,4-二取代的喹唑啉(3a-3n),收率良好至极佳。红外光谱、1H NMR、13C NMR 和质谱数据证实了这些新化合物的结构。抗菌和抗真菌活性筛选结果表明,与标准药物相比,化合物 3b、3e、3i 和 3l 对革兰氏(+)和革兰氏(-)细菌(金黄色葡萄球菌、克雷伯氏菌、绿脓杆菌)具有极佳的活性。3l、3g 和 3n 对 A. nigeri 和 C. albicans 微生物具有更好的抗真菌活性。在这项研究中,利用 Molinspiration(Molinspiration,2014 年)和 MolSoft(MolSoft,2007 年)性质探索工具包对目标化合物 3a-3n 进行了分子性质和药物相似性的硅学预测,以预测其较高的口服生物利用度。