Rigid 3D-spiro chromanone as a crux for efficient antimicrobial agents: synthesis, biological and computational evaluation
作者:F. H. Elghareeb、E. M. Kandil、M. Abou-Elzahab、M. Abdelmoteleb、M. A. Abozeid
DOI:10.1039/d1ra03497a
日期:——
Different new compounds based upon a 3D-spiro chromanone scaffold such as Mannich bases 2 and 3 in addition to azo dye 4 were synthesized. Besides, the condensation reactions of the hydrazide-spiro chromanone 8 with different ketonic reagents led to the synthesis of pyrazoles (9 & 10) and anils (11 & 13). Moreover, the methoxyl substituted spiro chromanone 14 was condensed with different hydrazines and
由于耐药微生物数量的增加,非常需要开发具有新颖化学骨架和工作机制的新型有效抗菌剂。合成了基于 3D-螺环苯并二氢吡喃酮支架的不同新化合物,例如曼尼希碱2和3 ,以及偶氮染料4 。此外,酰肼-螺苯并二氢吡喃酮8与不同酮类试剂的缩合反应导致了吡唑( 9和10 )和苯胺( 11和13 )的合成。此外,甲氧基取代的螺苯并二氢吡喃酮14与不同的肼和酰肼缩合,得到相应的腙15-18 ,产率高达 85%。腙18与水杨醛的缩合以优异的产率产生香豆素基螺色满酮19 ,而其与苯甲醛反应然后与肼反应以82%的产率得到氨基吡唑衍生物21 。抗菌评估表明,酰肼8对不同微生物具有显着的活性(金黄色葡萄球菌: D = 22 mm,MIC = 1.64 μM;大肠杆菌: D = 19 mm,MIC = 1.64 μM;白色念珠菌: D = 20)毫米,MIC = 6.57 μM)。此外,偶氮染料4 ( D = 13–19