Hantzsch reaction: Synthesis and characterization of some new 1,4-dihydropyridine derivatives as potent antimicrobial and antioxidant agents
作者:A.M. Vijesh、Arun M. Isloor、S.K. Peethambar、K.N. Shivananda、T. Arulmoli、Nishitha A. Isloor
DOI:10.1016/j.ejmech.2011.09.026
日期:2011.11
the present study two new series of Hantzsch 1,4-dihydropyridine derivatives (1,4-DHPs) containing substituted pyrazole moiety (4a–f and 5a–f) were synthesized by the reaction of 3-aryl-1H-pyrazole-4-carbaldehydes with 1,3-dicarbonylcompounds (ethylacetoacetate and methylacetoacetate) and ammonium acetate. The newly synthesized compounds were characterized by IR, NMR, mass spectral study and also by
在本研究中,通过3-芳基-1 H-吡唑-的反应合成了两个新的含取代吡唑部分(4a - f和5a - f)的Hantzsch 1,4-二氢吡啶衍生物(1,4-DHPs)。4-甲醛与1,3-二羰基化合物(乙酰乙酸乙酯和乙酰乙酸甲酯)和乙酸铵。通过IR,NMR,质谱研究以及C,H,N分析对新合成的化合物进行了表征。通过孔板法(抑制区)筛选新化合物的抗菌活性。还通过测量DPPH自由基清除测定法对合成的化合物进行了抗氧化研究。化合物4c,4e发现4f和4f是有效的抗菌剂和抗氧化剂。进行了化合物4c,4e和4f的急性口服毒性研究,实验研究表明,化合物4c和4e高达3000 mg / kg是安全的,没有动物死亡。但是,在化合物4f中,我们发现死亡率超过2000 mg,并且在实验动物中也表现出明显的行为变化。