Listar QUIO_Articles por fecha de publicación
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Self-Assembly of Two-Component Gels: Stoichiometric Control and Component Selection
Wiley (2009)Two-component systems capable of self-assembling into soft gel-phase materials are of considerable interest due to their tunability and versatility. This paper investigates two-component gels based on a combination of a ... -
A Combined Experimental and Theoretical Study of the Polar [3 + 2] Cycloaddition of Electrophilically Activated Carbonyl Ylides with Aldehydes and Imines
American Chemical Society (2009)Numerous 2,5-diaryl-1,3-dioxolane-4,4-dicarbonitriles and 2,4-diphenyl-1,3-oxazolidine-5,5-dicarbonitriles have been synthesized by [3 + 2] cycloaddition reactions between carbonyl ylides generated from epoxides and aldehydes ... -
Unraveling the Molecular Recognition of Amino Acid Derivatives by a Pseudopeptidic Macrocycle: ESI-MS, NMR, Fluorescence, and Modeling Studies
American Chemical Society (2009)The binding between a pseudopeptidic macrocyclic naphthalenophane and different N-protected amino acid derivatives has been thoroughly studied by ESI-MS, NMR, fluorescence, and molecular modeling. Careful NMR titration ... -
Fluorescence and mass spectrometry studies of the interaction between naproxen and synthetic pseudopeptidic models in organic media
Elsevier (2009)Time-resolved/steady-state fluorescence and mass spectrometry measurements have shown the preferential binding of a non-steroidal anti-inflammatory drug (NSAID) like naproxen 4 to a synthetic pseudopeptidic receptor built ... -
Improved polyHEMA-DAQ films for the optical analysis of nitrite
Elsevier (2009)A series of crosslinked poly(2-hydroxyethyl methacrylate) films containing 1,2-diaminoantraquinone (DAQ) have been synthesized and characterized spectroscopically by FT-IR and UV-vis. Their response towards nitrite anion ... -
Malayaite ceramic pigments: A combined optical spectroscopy and neutron/X-ray diffraction study
Elsevier (2009)Ceramic pigments based on the Cr-doped malayaite structure were synthesized by solid state reaction and characterized by optical spectroscopy and combined X-ray and neutron powder diffraction in order to elucidate the still ... -
Convergent, stereoselective syntheses of the glycosidase inhibitors broussonetines C, O and P
Elsevier (2009)The first syntheses of the polyhydroxylated alkaloids (iminosugars) broussonetines O and P, glycosidase inhibitors of the pyrrolidine class, have been performed in a convergent, stereocontrolled way from d-serine as the ... -
Stereoselective synthesis of the cytotoxic macrolide aspergillide B
Elsevier (2009)A total, stereoselective synthesis of the cytotoxic macrolide aspergillide B has been performed. A cross metathesis and a C-glycosidation via a Mukaiyama-type aldol reaction were key features of the synthesis. The macrocyclic ... -
Highly stereoselective epoxidation of O-protected 3-hydroxy-1-nitroalkenes
Elsevier (2009)[No abstract available] -
Stereoselective syntheses of the glycosidase inhibitors hyacinthacine A2, hyacinthacine A3 and 5-epi-hyacinthacine A3
Elsevier (2009)Stereoselective syntheses of the naturally occurring glycosidase inhibitors hyacinthacines A2 and A3 are reported. In the case of hyacinthacine A2, the pyrrolizidine system was created from an acyclic precursor via a double ... -
A dopamine transport inhibitor with markedly low abuse liability suppresses cocaine self-administration in the rat
Springer-Verlag (2009)RATIONALE N-substituted benztropine analogs are potent dopamine uptake inhibitors that display pharmacokinetic/dynamic properties consistent with the profile of a substitute medication for cocaine addiction. OBJECTIVES The ... -
The Dopamine Uptake Inhibitor 3α-[bis(4′-fluorophenyl)metoxy]-tropane Reduces Cocaine-Induced Early-Gene Expression, Locomotor Activity, and Conditioned Reward
Nature Publishing Group (2009)Benztropine (BZT) analogs, a family of high-affinity dopamine transporter ligands, are molecules that exhibit pharmacological and behavioral characteristics predictive of significant therapeutic potential in cocaine ... -
Crystal structures of the HCl salts of pseudopeptidic macrocycles display ‘‘knobs into holes’’ hydrophobic interactions between aliphatic side chains
Royal Society of Chemistry (2009)The crystal structures of three HCl salts of pseudopeptidic macrocycles show a H-bonding tubular stack of the rings, where the amino acidic side chains (Val, Leu, Ile) display an inter-columnar “knobs into holes” hydrophobic ... -
Formation of Pyrazol-1,3,4-Thiadiazoles through 1,3-Dipolar Cycloadditions of 3-Thioxo-[1,2,4]-Triazepin-5-one with Nitrilimines: An Experimental and Computational study
Wiley-Blackwell (2009)In this work the results of experimental and computational study of the title compounds and some ancillary compounds are reported. Two bicyclic pyrazol-1,3,4-thiadiazole derivatives were synthesized by reaction between ... -
Development of efficient processes under flow conditions based on catalysts immobilized onto monolithic supported ionic liquid-like phases
International Union of Pure and Applied Chemistry (2009)The introduction of imidazolium subunits into polystyrene-divinylbenzene (PS-DVB) polymers enables the preparation of a variety of catalytic systems. Those include the stabilization of catalytically active Pd nanoparticles ... -
Switchable Perfomance of an l-Proline-Derived Basic Catalyst Controlled by Supramolecular Gelation
American Chemical Society (2009)An l-proline-derived low molecular weight gelator forms gels in nitromethane and nitroethane and acts as a basic catalyst for the Henry nitroaldol reaction of these solvents with 4-nitrobenzaldehyde and 4-chlorobenzaldehyde. ... -
Supramolecular gel formation and self-correction induced by aggregation-driven conformational changes
Royal Society of Chemistry (2009)The formation of self-assembled fibrillar networks by low molecular weight peptidomimetics containing a Pro-Val moiety is reported; insight into the aggregation mechanism is provided revealing that it is associated to ... -
Photocatalytic degradation of orange II by titania addition to sol-gel glasses
Springer Verlag (2009)Glasses with SiO2-CaO-ZnO-B2O3-K2O-Al2O3 composition modified by addition of titania (3, 5, 12 and 20% w) have been prepared by sol-gel method. The obtained gels were aged, dried and fired at 600ºC/1h in order to stabilise ... -
Síntesis y caracterización de a-cristobalita, b-espodumeno, diópsido e indialita mediante una ruta mixta sol-gel
Sociedad Española de Cerámica y Vidrio (2009)Sol – gel processing has been used, to obtain crystalline phases of α–cristobalite, β–espodumene, indialite and diopside, with the purpose of being able to be inserted in a later studio, in the development of enamels of ... -
La microestructura de metalizados en cerámica plana vidriada
Faenza Editrice Ibérica (2009)En este artículo se estudia la microestructura y las propiedades ópticas y mecánicas de baldosas con efecto metalizado desarrollado tanto por deposición PVD de titanio en pasta roja y pasta blanca, y en baldosa de gres ...