Global ETD Search
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Showing 1 to 20 of 81 for “"Iodo"”.
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Estado nutricional de iodo, selênio e função tireoidiana em idosos da Universidade Aberta à Terceira Idade
… and T4, and selenium acts as part of the enzyme iodothyronine 5'-deiodinase type I, thioredoxin reductase and selenoproteins. Objective – This study aimed to evaluate the nutritional status of iodine and selenium, through mean urinary concentration and thyroid function, in elderly people enrolled …
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Synthesis of Single Isomer Trisubstituted Olefins from beta-chloro-alpha-iodo-alpha, beta-Unsaturated Esters and Alkynyl Esters
… olefin template such as (E)-beta-chloro-alpha-iodo-alpha,beta-unsaturated esters cross-couple with 9-alkyl-9-BBN to produce single isomer trisubstituted olefins using palladium-catalyzed Suzuki-Miyaura cross-coupling reaction. This methodology can be further expanded to introduce various alkyl …
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Produto comercial comparado à solução de iodo a 6 % na prevenção de afecções umbilicais de bezerros recém-nascidos
As afecções umbilicais estão entre os principais agravos que acometem os bezerros recém-nascidos, podendo acarretar processos inflamatórios e/ou infecciosos e, até mesmo, a morte do animal, o que compromete a produção e, como consequência, leva a perdas econômicas. Na intenção de encontrar um …
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Some Derivatives of Diphenyl Ether
The object of this investigation was to prepare iodo derivatives of a substituted diphenyl ether, and its intermediate compounds, The diphenyl ether studied was 4-phenoxyhydrocinnamic acid. | The study of iodo derivatives of diphenyl ether has been recently stimulated by the work of Harington and …
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Synthesis of Functional Analogs of Non-Steroidal Estrogens
… two new iodinated estrogens, 1-(2'-iodo-4'-hydroxyphenyl)-2-(4'-hydroxyphenyl)butane and erythro-3-(2'-iodo-4'-hydroxyphenyl)-4-(4'-hydroxyphenyl)hexane (2'-iodohexestrol), were prepared. The relative binding affinities of these compounds for the estrogen receptor in vitro were 50 …
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The crystal structures of para-chloriodoxy benzene and some other aromatic compounds
… structures of meta-dinitrobenzene, para-chloriodoxy benzene, and benzene iodo-dichloride are described. The structure of meta-dinitrobenzene, C₆H₄(NO₂)₂), was obtained from Fourier projections on the ab and bc planes. The x and y coordinates were obtained with considerable accuracy from the …
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Nucleophilic displacement reactions of some carbohydrates in dimethyl sulphoxide
Several 5-0-toluene-p-sulphonyl and 5-iodo derivatives of «-and 3-ribofuranoses and «-xylofuranose have been prepared in order to study their reactions with sodium hydrogen carbonate in dimethyl sulphoxide. Similar reactions are known to convert acylic primary sulphonates and iodides to aldehydes …
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Nucleophilic displacement reactions of some carbohydrates in dimethyl sulphoxide
Several 5-0-toluene-p-sulphonyl and 5-iodo derivatives of «-and 3-ribofuranoses and «-xylofuranose have been prepared in order to study their reactions with sodium hydrogen carbonate in dimethyl sulphoxide. Similar reactions are known to convert acylic primary sulphonates and iodides to aldehydes …
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Guanidino-aryl substituted enol lactones: Selective and potent mechanism-based inhibitors of trypsin-like serine proteases
… serine proteases. The first class of protio and iodo enol lactones had either a 4-guanidino phenyl substituent (3-(4-guanidinophenyl)-6-methylidene tetrahydro-2-pyranone (1) and 3-(4-guanidinophenyl)-6-(E)-iodomethylidene tetrahydro-2-pyranone (2)) or a 4-guanidinomethyl phenyl substituent …
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Síntese e estudo do mecanismo de inibição do transporte de elétrons fotossintético de novos análogos aos rubrolídeos e estudos sintéticos dirigidos para o furanocembranolídeo (-)-deoxipukalídeo
… foram avaliadas ((R,Z)-tert-butil(6-iodo-5-metilexa-1,5-dien-3- iloxi)dimetilsilano e (S)-2-(5-oxo-2-(prop-1-en-2-il)-6-(triisopropilsililoxi)hexil) furano-3-caboxilato de metila). Para a síntese dos compostos análogos aos rubrolídeos, o ácido mucobrômico foi utilizado como material …
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The tandem chain extension -aldol reaction of beta-keto esters
… A control Reformatsky reaction with a methyl 2-iodo-5,5-dimethyl-4-oxo-hexanoate 53 and methyl 2-iodo-5,5-dimethylhexanoate 65 indicates that the presence of a gamma-keto-functionality in the zinc-organometallic intermediate in the TCEA reactions is key to the syn-selectivity that is observed. …
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Selective Labelling of Peptides with Organometallic Compounds - Chemical and Biological Characterization
… As a proof of concept, dipeptides containing a 4-iodo-phenylalanine were synthesized and different alkynylated ferrocene derivatives were successfully coupled. An enkephalin derivative was synthesized next where the natural phenylalanine was substituted by the 4-iodo-phenylalanine residue, to …
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Exploración de la función hipofisaria en relación con el crecimiento
… el test de Studer, determinando la captación de iodo, antes y 36 horas después de la administración de antitiroides de síntesis (en nuestro caso neomercazol). Los resultados obtenidos están de acuerdo con el autor, informando de la deficiencia de esta hormona, en los casos de nanismo hipofisario …
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A Conductometric Study of the Reaction Velocities of 2, 4-Dinitrochloro, Bromo, and Iodobenzene with Piperidine in Dimethylsulfoxide at Various Concentrations and Temperatures
… piperidine and 2,4-dinitrochloro, bromo, and iodobenzene were reacted in dimethyl sulfoxide at three temperatures and two temperatures. Findings. The revised average rate for the chloro analog in ethanol was 1.691 1 mol-1 min-1 ± .094. The average rate constants for the chloro, bromo, and iodo …
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INVESTIGATIONS OF HYPERVALENT IODINE COMPOUNDS IN ORGANIC TRANSFORMATIONS
… react smoothly to form the corresponding alkyl iodobenzoates. When IBX or IBA is treated with a quaternary ammonium halide, it will decompose to 2-iodobenzoic acid. The presence of a nucleophilic halide ion is essential for such reaction to occur. Replacing halides with non-nucleophilic BF4- …
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Reactions and properties of the isomeric dihydrothiophene 1, 1- dioxides
… (VII). The 3-bromo, 3-chloro and the 3-iodo-2,3-dihydrothiophene 1,1-dioxides were prepared through a series of reactions, the letter two for the first time. The 3-iodo-2,3-dihydrothiophene 1,1-dioxide (XIX) was prepared by treating the 3-bromo-2,3-dihydrothiophene 1,1- dioxide (XIII) …
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Water-soluble benzophenoxazine dyes: syntheses, derivatization and photophysical studies
… aqueous media. We have also prepared alkynes and iodo derivatives of benzophenoxazines, which can be used for synthesis of water-soluble, through-bond, energy transfer cassettes. Alkynes were prepared via Sonogashira coupling.
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MODIFIED BODIPY PROBES TO EXPLORE PEROXISOME FUNCTION
… residue. This could successfully be coupled with iodo-BODIPY for future use as cell-labelling fluorophore.
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