Convenient access to 1,3,4-trisubstituted pyrazoles carrying 5-nitrothiophene moiety via 1,3-dipolar cycloaddition of sydnones with acetylenic ketones and their antimicrobial evaluation
作者:N. Satheesha Rai、Balakrishna Kalluraya、B. Lingappa、Shaliny Shenoy、Vedavati G. Puranic
DOI:10.1016/j.ejmech.2007.08.002
日期:2008.8
Novel 1-aryl-3-(5-nitro-2-thienyl)-4-aroyl-pyrazoles 7 have been synthesized by the 1,3-dipolar cycloaddition of 3-arylsydnones 3 with 1-aryl-3-(5-nitro-2-thienyl)-2-propyn-1-ones 6. The newly synthesized compounds were well characterized by elemental analysis, IR, (1)H NMR and mass spectral studies. They were also screened for their antibacterial and antifungal activities against a variety of microorganisms
通过3-芳基sydnones 3与1-芳基-3-(5-硝基)的1,3-偶极环加成反应合成了新型的1-芳基-3-(5-硝基-2-噻吩基)-4-芳酰基-吡唑7。 -2-噻吩基-2-丙炔-1-酮6.通过元素分析,IR,(1)H NMR和质谱研究对新合成的化合物进行了很好的表征。还针对它们对多种微生物的抗菌和抗真菌活性进行了筛选,本文讨论了此类研究的结果。