Synthesis, antimicrobial evaluation and molecular modelling of novel sulfonamides carrying a biologically active quinazoline nucleus
作者:Mostafa M. Ghorab、Zienab H. Ismail、Mohamad Abdalla、Awwad A. Radwan
DOI:10.1007/s12272-013-0094-6
日期:2013.6
A novel series of quinazolines 5–10, triazoloquinazolines 11–17 and triazinoquinazoline 19 bearing a biologically active sulfonamide moiety were synthesized, utilizing methyl 2-isothiocyanato benzoate 2. Some of the newly synthesized compounds revealed promising bacterial growth inhibition, compared with the ampicillin, as the reference drug. A LigandScout approach-generated pharmacophore model for the Staph aureus bacteria growth inhibition was done. The degree of fitting of the test set compounds (3, 4, 6, 8, 11, 17) to the generated hypothetical model revealed a qualitative measure of the more or less microbial inhibition of Staphylococcus aureus. Compounds (7, 8, 10, 12, 15, 17 and 22), which revealed significant activity, are able to effectively satisfy the proposed pharmacophore geometry, using the energy accessible conformers (E conf < 20 kcal/mol).
一系列含有生物活性磺胺基团的新型喹唉类(5-10)、三唑并喹唉类(11-17)和三嗪并喹唉(19)被合成,利用了甲基2-异硫氰基苯甲酸酯2。与作为参考药物的氨苄西林相比,一些新合成的化合物显示出有希望的细菌生长抑制作用。针对金黄色葡萄球菌生长抑制,进行了基于LigandScout方法产生的药效团模型。测试集化合物(3、4、6、8、11、17)与生成的假设模型的拟合程度揭示了金黄色葡萄球菌抑制作用的大小。显示出显著活性的化合物(7、8、10、12、15、17和22)能够有效满足提出的药效团几何结构,利用能量可达构象(E conf < 20 kcal/mol)。