An efficient synthesis of some new 3-bipyridinyl substituted coumarins as potent antimicrobial agents
作者:Hemali B. Lad、Rakesh R. Giri、D.I. Brahmbhatt
DOI:10.1016/j.cclet.2013.01.041
日期:2013.3
studies in developing newantimicrobials, a series of structurally novel 3-bipyridinyl substituted coumarin derivatives 4a–f and 5a–f were synthesized by a single-step reaction protocol under Krohnke's reaction conditions. 1H NMR, 13C NMR, IR and mass spectral techniques were employed for the structural elucidation of the synthesized compounds. An evaluation of antimicrobial activity showed that almost
摘要作为开发新型抗菌剂的一项正在进行的研究的一部分,在克罗恩克反应条件下,通过一步法合成了一系列结构新颖的3-联吡啶基取代的香豆素衍生物4a-f和5a-f。1 H NMR,13 C NMR,IR和质谱技术用于合成化合物的结构阐明。抗菌活性评估表明,几乎所有化合物均比参考药物显示出更好的结果。在合成的衍生物4f,5a和5d中,发现是最有效的类似物。因此,它们可能是新药的有希望的领导者。
Synthesis and Some New Indolizine and Pyrrolo[1,2-a]quinoline Derivatives via Nitrogen Ylides
作者:Kamal M. Dawood、Nabila A. Kheder、Elham S. Darwish
DOI:10.3987/com-08-11527
日期:——
The pyridinium bromides 2a,b reacted with dimethyl acetylene-dicarboxylate (DMAD) to give the indolizine derivatives 6a,b. Bromide salts 2a,b reacted also with β-nitrostyrene, ethyl acrylate and with acrylamide to give the corresponding indolizine derivatives 8a,b and 10a-d. Reaction of the quinolinium salts 12a,b with DMAD, β-nitrostyrene and with ethyl acrylate as dipolarophiles furnished the corresponding
Synthesis of Some 3-(4-Aryl-benzofuro[3,2-<i>b</i>]pyridin-2-yl)coumarins and Their Antimicrobial Screening
作者:Anil K. Patel、Niraj H. Patel、Mehul A. Patel、Dinker I. Brahmbhatt
DOI:10.1002/jhet.778
日期:2012.5
The synthesis of some 3‐(4‐aryl‐benzofuro[3,2‐b]pyridin‐2‐yl)coumarins 3a–r has been carried out by the reaction of 3‐coumarinoyl methyl pyridinium salts 1a–c with 2‐arylidene aurones 2a–f in the presence of ammonium acetate and acetic acid under Kröhnke's reaction conditions. All the synthesized compounds were characterized by analytical and spectral data. They have been screened for their antibacterial
某些3-(4-芳基-苯并呋喃[3,2- b ]吡啶-2-基)香豆素3a-r的合成是通过3-香豆素酰基甲基吡啶鎓盐1a-c与2-亚芳基的反应进行的噢哢2A-F在乙酸铵和乙酸的Kröhnke的反应条件下的存在。所有合成的化合物均通过分析和光谱数据表征。筛选了它们作为革兰氏阴性菌对大肠杆菌(ATCC 25922)的抗菌活性,作为革兰氏阳性菌对枯草芽孢杆菌(ATCC 1633)的研究以及对黑曲霉(ATCC 9029)的抑菌活性。
Synthesis, characterization and antimicrobial activity of some 4-aryl-2,6-di(coumarin-3-yl)pyridines
作者:Dinker Ishwarbhai Brahmbhatt、Anil K. Patel、Niraj H. Patel、Mehul A. Patel
DOI:10.3998/ark.5550190.0011.b03
日期:——
Some4-aryl-2,6-di(coumarin-3-yl)pyridines 3a-r are synthesized by the reaction of 3coumarinoyl methyl pyridinium salts 1a-c with appropriate 1-[2H-1-benzopyran-2-on-3-yl]-3aryl-prop-2-en-1-ones 2a-f in the presence of ammonium acetate and acetic acid under the Krohnke reaction conditions. All the synthesized compounds are screened for antimicrobialactivity.
Naphthalene substituted benzo[c]coumarins: Synthesis, characterization and evaluation of antibacterial activity and cytotoxicity
作者:Mrugesh Patel、Kaushal Patel
DOI:10.1515/hc-2019-0024
日期:2019.12.31
such as 1H-NMR, 13C-NMR, DEPT, and MS spectral data. Synthesised compounds were screened for antibacterialactivity and cytotoxicity against different human cancer cell lines including cervix cancer (HeLa), breast cancer (MCF-7) and lung cancer (A549) using tetrazolium dye 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) cell viability assay. Although with varying degrees, a significant