Synthesis of new 3-aryl-4-(3-aryl-4,5-dihydro-1H-pyrazol-5-yl)-1-phenyl-1H-pyrazole derivatives as potential antimicrobial agents
作者:Shridhar Malladi、Arun M. Isloor、S. K. Peethambar、Hoong Kun Fun
DOI:10.1007/s00044-012-0267-8
日期:2013.6
New (E)-1-aryl-3-(3-aryl-1-phenyl-1H-pyrazol-4-yl)prop-2-en-1-ones 6 (pyrazolic chalcones) were synthesized from Claisen–Schmidt reaction of 3-aryl-1-phenylpyrazol-4-carboxaldehydes 4 with several acetophenone derivatives 5. Subsequently, the cyclocondensation reaction of chalcones 6 with phenylhydrazine in acetic acid medium afforded the new 3-aryl-4-(3-aryl-4,5-dihydro-1H-pyrazol-5-yl)-1-phenyl-1H-pyrazoles
通过克莱森-施密特反应合成了新的(E)-1-芳基-3-(3-芳基-1-苯基-1 H-吡唑-4-基)丙-2-烯-1-酮6(吡唑基查耳酮) 3-芳基-1-苯基吡唑-4-羧醛4与几种苯乙酮衍生物5。随后,查耳酮6与苯肼在乙酸介质中的环缩合反应得到新的3-芳基-4-(3-芳基-4,5-二氢-1 H-吡唑-5-基)-1-苯基-1 H -吡唑7。通过光谱研究对合成的化合物进行了表征,并评估了它们对三种病原细菌金黄色葡萄球菌的体外抗菌活性,大肠埃希菌和铜绿假单胞菌,以及对三种病原真菌菌株黄曲霉,角质霉菌和白色念珠菌的体外抗真菌活性。