Synthesis and antibacterial activity of some new 2,3-dimethoxy-3-hydroxy-2-(1-phenyl-3-aryl-4-pyrazolyl)chromanones
作者:Om Prakash、Rajesh Kumar、Rakesh Sehrawat
DOI:10.1016/j.ejmech.2008.03.028
日期:2009.4
pyrazolyl)chromanones (5) have been synthesized by the oxidation of 3-hydroxy-2-(1-phenyl-3-aryl-4-pyrazolyl)chromones (4) with iodobenzene diacetate in methanol. The structures of compounds 5 were established by the combined use of 1H NMR, IR and mass spectra. All the seven compounds (5) were tested in vitro for their antibacterial activity against Gram-positive bacteria namely, Staphylococcus aureus
通过氧化3-羟基-2-(1-苯基-3)合成了七个新的2,3-二甲氧基-3-羟基-2-(1-苯基-3-芳基-4-吡唑基)苯并二氢吡喃酮(5) -芳基-4-吡唑基)色酮(4)与碘代苯二乙酸酯在甲醇中的溶液。通过结合使用1 H NMR,IR和质谱确定化合物5的结构。所有七个化合物(5)均在体外测试了对革兰氏阳性菌,即金黄色葡萄球菌,表皮葡萄球菌和短小芽孢杆菌的抗菌活性,以及两种革兰氏阴性菌,即鼠伤寒沙门氏菌和沙门氏菌。铜绿假单胞菌。三种化合物5d,5f和5g表现出的抗菌活性可与市售抗生素Linezolid,Cefaclor和Cefuroxime axetial媲美。