Results 31 to 40 of about 30,682 (325)
Synthesis and Antimicrobial Evaluation of Some New Oxadiazoles Derived from Phenylpropionohydrazides
Molecules, 2009 In this study a series ofnew1-(2-aryl-5-phenethyl-1,3,4-oxadiazol-3(2H)-yl)ethanones 2a-e was synthesized by the cyclization of imines 1a-e using acetic anhydride. The products were evaluated for anti-bacterial and anti-fungal activity.
Mohammad Ali +3 more
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Investigation on Quantitative Structure-Activity Relationships of 1,3,4 Oxadiazole Derivatives as Potential Telomerase Inhibitors [PDF]
, 2019 The published manuscript is available at EurekaSelect via http://www.eurekaselect.com/164022/article, DOI : 10.2174/1570163815666180724113208. © 2018 Bentham ScienceA series of 1,3,4-oxadiazole derivatives with significant broad-spectrum anticancer ...
Almerico, Anna Maria +2 more
core +1 more source
4-[4-(4-Amino-1,2,5-oxadiazol-3-yl)-1,2,5-oxadiazol-3-yl]-1,2,5-oxadiazol-3-amine [PDF]
Acta Crystallographica Section E Structure Reports Online, 2012 The complete molecule of the compound, C(6)H(4)N(8)O(3), is generated by a crystallographic twofold rotation axis that runs through the central ring. The flanking ring is twisted by 20.2 (1)° with respect to the central ring. One of the amino H atoms forms an intra-molecular N-H⋯N hydrogen bond; adjacent mol-ecules are linked by N-H⋯N hydrogen bonds ...
Seik Weng Ng +5 more
openaire +4 more sources
Synthesis and reactions of 1-amino-1,5,6,10b-tetrahydroimidazo[2,1-a]isoquinolin-2(3H)-ones [PDF]
, 2008 1-Amino-1,5,6,10b-tetrahydroimidazo[2,1-a]isoquinolin-2(3H)-ones, as previously unknown ring-annelated isoquinolines with a 3-aminoimidazolidin-4-one scaffold, were selectively prepared upon reacting 2-carbamoylmethyl- or 2-ethoxycarbonylmethyl-3,4 ...
De Kimpe, Norbert +5 more
core +2 more sources
International Journal of Molecular Sciences, 2022 Oxadiazoles are electron-poor, five-membered aromatic heterocycles that contain one oxygen and two nitrogen atoms [...]
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Fan-shaped and toric textures of mesomorphic oxadiazoles [PDF]
Phase Transitions, Vol.80, 987-998, 2007, 2007 When a family of non symmetrical heterocycled compounds is investigated, a variety of mesophases can be observed with rather different features. Here we report the behaviour of seven different members among a family of such materials, that consists of mesomorphic oxadiazole compounds.
arxiv +1 more source
Síntese, caracterização e avaliação antimicrobiana de 1,2,4-oxadiazóis derivados do ácido trans-3,4-(metilenodioxi)-cinâmico [PDF]
, 2022 Compounds containing heterocyclic ring systems are of great importance both medicinally and industrially. Five-membered 1,2,4-oxadiazole heterocycles have received considerable attention because of their unique bioisosteric properties and unusual wide ...
Barbosa Freitas, Queila Patrícia da Silva +6 more
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Growth of toric domains in the smectic phase of oxadiazoles [PDF]
Phase Transitions, Volume 81, Issue 5 May 2008, pages 471 - 477, 2007 In a previous paper (Phase Transitions, 80(9), 987, 2007) we discussed the smectic and nematic textures of some mesomorphic oxadiazole compounds with terminal Cl-substituent. Optical microscope investigations showed a very interesting behaviour of smectic and nematic phases; the smectic phase has fan-shaped and toric textures and the nematic phase has ...
arxiv +1 more source
Cu(OH)x-clay catalyst promoted synthesis of 4,5-dihydro-1,2,4-oxadiazole at room temperature
Green Processing and Synthesis, 2018 An easy and efficient scheme is described and designed for the preparation of 4,5-dihydro-1,2,4-oxadiazole using recyclable Cu(OH)x-clay heterogeneous catalyst at room temperature.
Dar Bashir Ahmad +3 more
doaj +1 more source
Molecules, 2021 A series of N-pyridyl ureas bearing 1,2,4- (1a, 2a, and 3a) and 1,3,4-oxadiazole moiety (1b, 2b, 3b) was prepared and characterized by HRMS, 1H and 13C NMR spectroscopy, as well as X-ray diffraction.
Sergey V. Baykov +6 more
doaj +1 more source