Search results for "Imidazoli"
showing 10 items of 173 documents
Supported Polyhedral Oligomeric Silsesquioxane-Based (POSS) Materials as Highly Active Organocatalysts for the Conversion of CO2
2018
Very high turnover numbers (TON) and productivity values up to 7875 and 740 respectively have been obtained for the conversion of CO2 into cyclic carbonates by using hybrid materials based on imidazolium modified polyhedral oligomeric silsesquioxanes (POSS-Imi) grafted on amorphous silica (SiO2) and mesostructured SBA-15. The heterogeneous organocatalysts were easily prepared via a straightforward synthetic procedure allowing to generate high local concentration spots of imidazolium active sites surrounding the POSS core. This synthetic procedure is also a promising approach for the design of a wide library of hybrid functional materials. The materials do not possess other co-catalytic spec…
CCDC 2121374: Experimental Crystal Structure Determination
2022
Related Article: Liāna Orola, Anatoly Mishnev, Dmitrijs Stepanovs, Agris Bērziņš|2022|ChemRxiv|||doi:10.26434/chemrxiv-2022-rb0xk
CCDC 2222724: Experimental Crystal Structure Determination
2022
Related Article: Lia̅na Orola, Anatoly Mishnev, Dmitrijs Stepanovs, Agris Be̅rziņš|2022|Cryst.Growth Des.|23|873|doi:10.1021/acs.cgd.2c01114
CCDC 922708: Experimental Crystal Structure Determination
2022
Related Article: Liāna Orola, Anatoly Mishnev, Dmitrijs Stepanovs, Agris Bērziņš|2022|ChemRxiv|||doi:10.26434/chemrxiv-2022-rb0xk
CCDC 922164: Experimental Crystal Structure Determination
2022
Related Article: Liāna Orola, Anatoly Mishnev, Dmitrijs Stepanovs, Agris Bērziņš|2022|ChemRxiv|||doi:10.26434/chemrxiv-2022-rb0xk
CCDC 127936: Experimental Crystal Structure Determination
2001
Related Article: S.Kiviniemi, M.Nissinen, M.T.Lamsa, J.Jalonen, K.Rissanen, J.Pursiainen|2000|New J.Chem.|24|47|doi:10.1039/a907608e
CCDC 199926: Experimental Crystal Structure Determination
2003
Related Article: E.Coronado, C.Gimenez-Saiz, M.Nicolas, F.M.Romero, E.Rusanov, H.Stoeckli-Evans|2003|New J.Chem.|27|490|doi:10.1039/b208762f
CCDC 743953: Experimental Crystal Structure Determination
2011
Related Article: M.G.Hobbs, T.D.Forster, J.Borau-Garcia, C.J.Knapp, H.M.Tuononen, R.Roesler|2010|New J.Chem.|34|1295|doi:10.1039/b9nj00771g
Clonidine induces nitric oxide- and prostaglandin-mediated vasodilation in healthy human skin
2005
Sustained sympathetic activation not only leads to vasoconstriction but also might induce paradox vasodilation. This study was performed to explore whether and how alpha(2)-receptor stimulation mediates this vasodilation. We investigated 11 healthy subjects in 33 dermal microdialysis (MD) sessions. After nerve trunk blockade, MD fibers were inserted and perfused with physiological saline until skin trauma-related vasodilation subsided. Thereafter, fibers were perfused with either clonidine solutions (10(-3), 5 x 10(-4), 10(-4) mol/l), N(G)-monomethyl-l-arginine (L-NMMA; nitric oxide synthase blocker), acetylsalicylic acid (ASA; cyclooxygenase blocker), or combinations of these. Laser-Dopple…
Desensitization of inhibitory prejunctional alpha 2-adrenoceptors and putative imidazoline receptors on rabbit heart sympathetic nerves.
1993
To find out whether sympathetic nerves of the rabbit heart possess pharmacologically relevant prejunctional imidazoline receptors different from α-autoreceptors, the inhibition by oxymetazoline, aganodine and BDF 6143 (4-chloro-2-[2-imidazoline-2-ylamino]-isoindoline hydrochloride) of endogenous noradrenaline overflow evoked by stimulation of extrinsic postganglionic sympathetic nerves (0.66 Hz, 80 pulses) was investigated. In addition we wanted to find out whether either type of these prejunctional receptors undergoes desensitization upon pre-exposure to respective agonists. The α2-adrenoceptor agonist oxymetazoline inhibited the evoked noradrenaline overflow (2.9 nmol/l, IC50; about 90010…