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Artículo
Characterization of the kisspeptin system in human sperm
(European Academy of Andrology, 2012)
Kisspeptin, the product of the KISS1 gene, plays an essential role in the regulation of spermatogenesis acting primarily at the hypothalamic level of the gonadotropic axis. However, the presence of kisspeptin and its ...
Artículo
Coupling of Aromatic Aldehydes with CO2Me-Substituted TpMe2Ir(III) Metallacyclopentadienes
(American Chemical Society, 2012)
The fully CO2Me substituted aquo-iridacyclopentadiene 1 reacts with a variety of aromatic aldehydes, at 90–120 °C, with the formation of bicyclic Fischer-type carbenes, generated by the transfer of the aldehydic H atom to ...
Artículo
Large-scale preparation and labelling reactions of deuterated silanes
(John Wiley & Sons, 2012)
A catalytic synthesis of deuterated silanes SiEt3D, SiMe2PhD and SiPh2D2 is reported that allows their facile generation in a 3–4 g scale, utilizing D2 (0.5 bar) as the hydrogen isotope source and low catalyst loadings ...
Artículo
Synthesis and Reactivity of Nickel an Palladium Fluoride Complexes with PCP Pincer Ligands. A NMR-Based Assessment of Electron-Donating Properties of Fluoride and Other Monoanionic Ligands
(American Chemical Society, 2012)
A series of complexes of the type [(iPrPCP)M-L] (M = Ni, Pd), containing the 2,6-bis(diisopropylphosphinomethyl)phenyl (iPrPCP) pincer ligand and simple monoanionic ligands L (F, Cl, Br, H, Me, Ph, NO3, and OTf), have been ...
Artículo
Virus-like glycodendrinanoparticles displaying quasi-equivalent nested polyvalency upon glycoprotein platforms potently block viral infection
(Nature Publishing Group, 2012)
Ligand polyvalency is a powerful modulator of protein–receptor interactions. Host–pathogen infection interactions are often mediated by glycan ligand–protein interactions, yet its interrogation with very high copy number ...
Artículo
Migratory insertion reactions of nickel and palladium σ-alkyl complexes with a phosphinito-imine ligand†‡
(Royal Society of Chemistry (Great Britain), 2012)
Ligand exchange reactions have been used for the synthesis of metallacyclic complexes of Ni and Pd of the type [M[upper bond 1 start](CH2CMe2-o-C6[upper bond 1 end]H4)(P–N)], where P–N is the phosphinito-imine ligand ...
Artículo
Axially Chiral Triazoloisoquinolin-3-ylidene Ligands in Gold(I)-catalyzed Asymmetric Intermolecular (4 + 2) Cycloadditions of Allenamides and Dienes
(American Chemical Society, 2012)
The first highly enantioselective intermolecular (4 + 2) cycloaddition between allenes and dienes is reported. The reaction provides good yields of optically active cyclohexenes featuring diverse substitution patterns and ...
Artículo
Well-defined alkylpalladium complexes with pyridine-carboxylate ligands as catalysts for the aerobic oxidation of alcohols
(Royal Society of Chemistry (Great Britain), 2012)
Neophylpalladium complexes of the type [Pd(CH(2)CMe(2)Ph)(N-O)(L)], where N-O is picolinate or a related bidentate, monoanionic ligand (6-methylpyridine-2-carboxylate, quinoline-2-carboxylate, 2-pyridylacetate or ...
Artículo
Highly enantioselective imine hydrogenation catalyzed by ruthenium phosphane-phosphite diamine complexes
(John Wiley & Sons, 2012)
Mildly does it: A highly enantioselective catalyst for the hydrogenation of N-aryl imines is described (see scheme). This catalyst offers practical advantages because it operates under very mild conditions and is based on ...
Artículo
Synthesis of amine-functionalized heparin oligosaccharides for the investigation of carbohydrate-protein interactions in microtiter plates
(Royal Society of Chemistry (Great Britain), 2012)
The synthesis of well-defined oligosaccharides is crucial for the establishment of structure-activity relationships for specific sequences of heparin, contributing to the understanding of the biological role of this ...