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furan/carie dentaire
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5,10,15-Triaryl-21,23-dioxacorrole and its isomer with a protruding furan ring.
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An oxa-analogue of 5,10,15-triarylcorrole, i.e., 5,10,15-triaryl-21,23-dioxacorrole (21,23-O(2)Cor)H, where two pyrrole rings are replaced by furan moieties, has been produced by condensation of 2,5-bis(arylhydroxymethyl)furan, 2-phenylhydroxymethylfuran, and pyrrole. 2-Phenylhydroxymethylfuran
Synthesis, crystal structure and characterizations of di-μ-cyanido-1:2κ2N:C;2:3κ2C:N-bis-(4,7,13,16,21,24-hexa-oxa-1,10-di-aza-bicyclo-[8.8.8]hexacosa-ne)-1κ8N1,N10,O4,O7,O13,O16,O21,O24;3κ8N1,N10,O4,O7,O13,O16,O21,O24-[5,10,15,20-tetra-kis-(4-chloro-phen-yl)porphyrinato-2κ4N]-2-iron(II)-1,3-dipotassium(I) tetra-hydro-furan disolvate with an unknown solvent.
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The title compound, [Fe(C44H24N8Cl4)(CN)2][K2(C18H36N2O6)2]·2C4H8O was synthesized and characterized by single-crystal X-ray diffraction as well as FTIR and
The effect of perinatal TCDD exposure on caries susceptibility in rats.
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2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD), the model compound of polychlorinated dibenzo-p-dioxins and furans, is a potent toxicant with the ability to hamper development. Accidental exposure to TCDD has been linked with various developmental dental aberrations in humans, and experimentally it has
Furan-2,5-dimethylene-tethered bis-imidacloprid insecticide conferring high potency.
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Bis-imidacloprid (bis-IMI) analogues with suitable alkylene spacers have plant-systemic insecticidal properties. The alkylene-tethered bis-IMI binds in a unique mode to the insect nicotinic acetylcholine receptor (nAChR) wherein the chloropyridine moieties are embraced by two distinct and distant
Encapsulation and selectivity of sulfate with a furan-based hexaazamacrocyclic receptor in water.
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A furan-based hexaazamacrocycle encapsulates a sulfate anion in its cavity showing strong affinity and selectivity for sulfate in water over a wide range of inorganic anions. The DFT calculations demonstrate that the receptor provides binding sites as hydrogen bonding donors and electrostatic
An ab initio investigation of the Buckingham birefringence of furan, thiophene, and selenophene in cyclohexane solution.
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Using a recently developed quadratic response methodology for the calculation of frequency-dependent third-order properties of molecules in solution, we investigate the Buckingham birefringence of furan, thiophene, and selenophene in cyclohexane solution. These systems are chosen since accurate
5,7,13,15-Tetra-oxo-2,2,10,10-tetra-kis-(trifluoro-meth-yl)-4,8,12,16-tetra-oxa-1(1,4),3(1,4),6(1,2),9(1,4),11(1,4),14(1,2)-hexa-benzenahexa-deca-phane tetra-hydro-furan monosolvate.
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The title compound, C(46)H(24)F(12)O(8)·C(4)H(8)O, consists of a cyclic aryl ester dimer and a tetra-hydro-furan mol-ecule. In the structure of the cyclic dimer, one carbonyl group stretches above the cavity and the other below.
Characterization and molecular modeling of the inclusion complexes of 2-(2-nitrovinyl) furan (G-0) with cyclodextrines.
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The objective of this study was to prepare and characterize complexes of 2-(2-nitrovinyl) furan (G-0) with 2-hydroxypropyl-β-cyclodextrin (HP-β-CD) and sulfobutyl ether-β-cyclodextrin (SBE-β-CD). The solid inclusion complexes were prepared using kneading and freeze-drying methods. Phase solubility
Modeling Molecular Systems at Extreme Pressure by an Extension of the Polarizable Continuum Model (PCM) Based on the Symmetry-Adapted Cluster-Configuration Interaction (SAC-CI) Method: Confined Electronic Excited States of Furan as a Test Case.
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Novel molecular photochemistry can be developed by combining high pressure and laser irradiation. For studying such high-pressure effects on the confined electronic ground and excited states, we extend the PCM (polarizable continuum model) SAC (symmetry-adapted cluster) and SAC-CI (SAC-configuration
Generation of an eosinophilotactic activity in the pleural cavity of platelet-activating factor-injected rats.
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The injection of platelet-activating factor (PAF) into the rat pleural cavity resulted in a marked increase in the number of eosinophils, neutrophils and mononuclear cells recovered from pleural washings after 6 hr. Within 24 hr, neutrophils and mononuclear cell counts returned to control values,
Alphabet soup within a porphyrinoid cavity: synthesis of heterocarbaporphyrins with CNNO, CNOO, CNSO and CNSeO Cores from an oxacarbatripyrrin.
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The first examples of porphyrin analogues with four different core atoms have been synthesized from an oxacarbatripyrrin intermediate. Acid-catalyzed condensation of the tripyrrin analogue with pyrrole or furan dialdehydes gave 22-oxa- and 22,23-dioxacarbaporphyrins, while reactions with furan,
Design and synthesis of novel 5-(4-chlorophenyl)furan derivatives with inhibitory activity on tubulin polymerization.
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OBJECTIVE
Discovery of novel series of colchicine binding site inhibitors (CBSIs).
METHODS
Isoxazoline 3a-d, pyrazoline 4a-b, 7a-f and 8a-f, cyclohexenone 9a-b and 10a-b or pyridine derivatives 11a-b were synthesized and evaluated for their inhibition of tubulin polymerization and cytotoxicity. Most
(αR,4R,4aR,6aS,7R,8S,10R,11S)-Methyl α-acet-oxy-4-(3-furan-yl)-10-hy-droxy-4a,7,9,9-tetra-methyl-2,13-dioxo-1,4,4a,5,6,6a,7,8,9,10,11,12-dodeca-hydro-7,11-methano-2H-cyclo-octa-[f][2]benzopyran-8-acetate (6-O-acetyl-swietenolide) from the seeds of Swietenia macrophylla.
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The mol-ecule of O-acetyl-swietenolide, C(29)H(36)O(9), isolated from the seeds of Swietenia macrophylla, features four six-membered rings connected together in the shape of a bowl; one of the inner rings adopts a twisted chair conformation owing to the C=C double bond. The furyl substitutent is
Anion binding behavior of heterocycle-strapped calix[4]pyrroles.
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A comparative study of the halide and benzoate anion binding properties of a series of phenyl, pyrrole, and furan-strapped calix[4]pyrroles has been carried out. These receptors, which have previously been shown to bind the chloride anion (Yoon et al., Angew. Chem., Int. Ed. 47(27):5038-5042, 2008),
Design, synthesis, and biological activity of novel 5-((arylfuran/1H-pyrrol-2-yl)methylene)-2-thioxo-3-(3-(trifluoromethyl)phenyl)thiazolidin-4-ones as HIV-1 fusion inhibitors targeting gp41.
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On the basis of our earlier molecular docking analysis, we designed and synthesized 5-((arylfuran/1H-pyrrol-2-yl)methylene)-2-thioxo-3-(3-(trifluoromethyl)phenyl)thiazolidin-4-ones (12a-o) as HIV-1 entry inhibitors. Compounds 12a-o effectively inhibited infection by both laboratory-adapted and
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