Synthesis of 1,3,5-trisubstituted pyrazoline nucleus containing compounds and screening for antimicrobial activity
作者:Manish Agrawal、Pankaj Kumar Sonar、Shailendra K. Saraf
DOI:10.1007/s00044-011-9871-2
日期:2012.11
heterocyclic compounds containing pyrazoline nucleus has been synthesized. The compounds were synthesized in two steps. Chalcone was synthesized in the first step by Claisen-Schmidt reaction, using 1-acetylnaphthalene and p-nitro benzaldehyde as reactants. In the second step, the chalcone was cyclized in an acidic medium with some hydrazine derivatives to form pyrazolines. All the compounds were characterized
在这项研究中,合成了一系列新的含吡唑啉核的杂环化合物。该化合物分两步合成。查尔酮的第一步是通过克莱森-施密特反应,使用1-乙酰基萘和对硝基苯甲醛作为反应物合成的。在第二步中,将查尔酮在带有一些肼衍生物的酸性介质中环化以形成吡唑啉。通过物理,色谱,光谱和元素分析对所有化合物进行表征,并通过杯板法在体外评估其对九种微生物的抗菌活性。所有化合物的最小抑菌浓度通过试管稀释法确定。与抗真菌活性相比,所有化合物均显示出更高的抗菌活性。化合物5g (3-萘-1-基-1-(2-硝基-苯基)-5-(4-硝基-苯基)-4,5-二氢-1H-吡唑)表现出最大的抗菌和抗真菌活性,可以指定为该系列中最有效的成员,在2-吡唑啉环的N-1位带有2-硝基苯基。