ethyl acetate/кариес зубов

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7,11,15,28-Tetra-methyl-1,21,23,25-tetra-kis(2-phenyl-ethyl)resorcin[4]arene ethyl acetate clathrate.

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The title compound, C(68)H(64)O(8)·C(4)H(8)O(2), is a new resorcin-[4]arene cavitand synthetic precursor, obtained by alkyl-ation of a previously reported resorcin[4]arene. The additional alkyl bridges significantly rigidify the structure and enforce a 'bowl' shape on the mol-ecular cavity. In the

7,11,15,28-Tetra-kis[(2-formyl-phen-oxy)methyl]-1,21,23,25-tetra-methyl-resorcin[4]arene cavitand ethyl acetate clathrate at 173 K.

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The title compound, C(68)H(56)O(16), was synthesized as a novel synthetic inter-mediate towards deeper and more elaborate resorcin[4]arene cavitands. The structure is the first reported example of a resorcin[4]arene cavitand bearing aromatic aldehyde functional groups at the extra-annular rim of the

Kinetic Investigations of the Reaction of Phenyl Radicals with Ethyl Acetate in the Gas Phase: An Experimental and Computational Study

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Cavity ring-down spectroscopy (CRDS) was employed to investigate the kinetics of the reaction between phenyl radicals (C₆H₅^•) and ethyl acetate (EtOAc) in the gas phase. Nitrosobenzene (C₆H₅NO) was used as the radical precursor to generate

Effect of the Ethyl Acetate Fraction of Eugenia uniflora on Proteins Global Expression during Morphogenesis in Candida albicans.

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Candida albicans is able to switch from yeast to hyphal growth and this is an essential step for tissue invasion and establishment of infection. Due to the limited drug arsenal used to treat fungal infections and the constant emergence of resistant strains, it is important to search for new

Modulatory effect of Senecio brasiliensis (Spreng) Less. in a murine model of inflammation induced by carrageenan into the pleural cavity.

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BACKGROUND Senecio brasiliensis (Spreng) Less (S. brasiliensis), known as "Flor-das-almas", "Margaridinha" or "Maria mole", is used in folk medicine as an anti-inflammatory and to treat gastric ulcers and stomach pain. While the Senecio genus has been widely studied for its pharmacological

Antibacterial activities of Diospyros blancoi, Phoenix dactylifera and Morus nigra against dental caries causing pathogens: An in vitro study.

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The study was undertaken to determine the in-vitro antibacterial potential of Diospyrosblancoi, Phoenix dactylifera and Morusnigra leaf extracts in hexane, chloroform, methanol, ethyl-acetate and aqueous extracts against dental caries causing bacteria. Disc diffusion assay was used to determine the

Acetonitrile hydration and ethyl acetate hydrolysis by pyrazolate-bridged cobalt(II) dimers containing hydrogen-bond donors.

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The preparation of new CoII-mu-OH-CoII dimers with the binucleating ligands 3,5-bis{bis[(N'-R-ureaylato)-N-ethyl]aminomethyl}-1H-pyrazolate ([H4PRbuam]5-, R=tBu, iPr) is described. The molecular structure of the isopropyl derivative reveals that each CoII center has a trigonal-bipyramidial

Antimicrobial potential of extracts from Stevia rebaudiana leaves against bacteria of importance in dental caries.

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In recent years, the antimicrobial activity of Stevia rebaudiana Bertoni leaf extracts against a large number of microorganisms has been evaluated, but not its activity against microorganisms of importance in dental caries. The aim of this study was to evaluate the antibacterial activity of Stevia

Effects of Ethyl Acetate Extracts from the Polycephalomyces nipponicus Isolate Cod-MK1201 (Ascomycetes) against Human Pathogenic Bacteria and a Breast Cancer Cell Line.

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This study aimed to identify a suitable organic solvent for extracting bioactive compounds from Polycephalomyces nipponicus and to evaluate the antibacterial and anticancer activities of the extracts obtained. Only extracts obtained with ethyl acetate exhibited antibacterial activity, so ethyl

[Anti-caries effects of polyphenol compound from Camellia sinensis].

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Polyphenol compound (designated Sunphenon) from leaf of Camellia sinensis have been partially purified by extraction of the boiling water with ethyl acetate. The effect of Sunphenon on cariogenic Streptococcus mutans groups (serotype c and g) was studied in both in vitro and in vivo. The summary of

In vitro and in vivo effects of isolated fractions of Brazilian propolis on caries development.

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Recently, two chemically different types of Brazilian propolis (type-3 and -12) were shown to have cariostatic properties. This study aimed to evaluate the influence of their isolated fractions on mutans streptococci viability, glucosyltransferases (GTFs) activity and caries development in rats. The

A High-Sensitivity Microfluidic Sensor Based on a Substrate Integrated Waveguide Re-Entrant Cavity for Complex Permittivity Measurement of Liquids.

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In this study, a novel non-invasive and contactless microwave sensor using a square substrate integrated waveguide (SIW) re-entrant cavity is proposed for complex permittivity measurement of chemical solutions. The working principle of this sensor is based on cavity perturbation technique, in which

Mechanical and aesthetics compatibility of Brazilian red propolis micellar nanocomposite as a cavity cleaning agent.

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BACKGROUND Propolis is a natural substance produced by bees and is known to have antimicrobial activity. Our aim was to evaluate the antimicrobial effect of micellar nanocomposites loaded with an ethyl acetate extract of Brazilian red propolis as a cavity cleaning agent and its influence on the

Oligomeric cholates: amphiphilic foldamers with nanometer-sized hydrophilic cavities.

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The hydroxyl at the C-3 of cholic acid was converted to an amino group, and the resulting amino-functionalized cholic acid was used as a monomer to prepare amide-linked oligomeric cholates. These cholate oligomers fold into helical structures with nanometer-sized hydrophilic internal cavities in

An assessment of adhesion, aggregation and surface charges of Lactobacillus strains derived from the human oral cavity.

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There is limited information concerning the adhesion and aggregation of human oral lactobacilli. In this study, the adhesion of 10 Lactobacillus species was investigated using H357 oral keratinocyte cells as an in vitro model for oral mucosa. Coaggregation with the representative oral pathogen,

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