Solvent Free Microwave Accelerated Synthesis of Heterocyclic Thiazolidin-4-ones as Antimicrobial and Antifungal Agents
作者:Kondapalli Venkata Gowri Chandra Sekhar、Vajja Sambasiva Rao、Aravalli Satish Reddy、Ravada Sunandini、V S A Kumar Satuluri
DOI:10.5012/bkcs.2010.31.5.1219
日期:2010.5.20
A simple and efficient method has been developed for conversion of arenecarbaldehyde-3-methylquinoxalin-2-ylhydrazones to 3-(2-methylquinoxalin-3-yl)-2-(substitutedphenyl)thiazolidin-4-ones in good yields using microwave irradiation technique on silica as solid support under solvent free conditions. The synthesized compounds were characterized by elemental microanalysis, infrared spectroscopy, $^1H$ NMR, and mass spectroscopy. All the synthesized thiazolidinones were investigated for their antimicrobial and antifungal activities. The results of the biological activities revealed that the compounds 3b, 3d, 3f and 3h exhibited excellent antibacterial activities while 3d and 3h exhibited good antifungal activity.
本研究采用微波辐照技术,在无溶剂条件下以二氧化硅为固体载体,将苯甲醛-3-甲基喹喔啉-2-基肼酮转化为 3-(2-甲基喹喔啉-3-基)-2-(取代苯基)噻唑啉-4-酮,并获得了良好的收率。合成的化合物通过元素显微分析、红外光谱、$^1H$ NMR 和质谱进行了表征。研究了所有合成的噻唑烷酮化合物的抗菌和抗真菌活性。生物活性研究结果表明,化合物 3b、3d、3f 和 3h 具有优异的抗菌活性,而 3d 和 3h 则具有良好的抗真菌活性。