Results 31 to 40 of about 10,137 (277)

Bulky-yet-flexible carbene ligands and their use in palladium cross-coupling [PDF]

open access: yes, 2019
In recent years, several classes of new N-heterocyclic carbene (NHC) ligands were developed around the concept of flexible steric bulk. The steric hindrance of these ligands brings stability to the active species, while ligand flexibility still allows ...
Cazin, Catherine   +2 more
core   +1 more source

Improvement of diaphragm and limb muscle isotonic contractile performance by K+ channel blockade

open access: yesJournal of NeuroEngineering and Rehabilitation, 2010
The K+ channel blocking aminopyridines greatly improve skeletal muscle isometric contractile performance during low to intermediate stimulation frequencies, making them potentially useful as inotropic agents for functional neuromuscular stimulation ...
Pollarine Jennifer, van Lunteren Erik
doaj   +1 more source

Simple Synthetic Approach to N-(Pyridin-2-yl)imidates from Nitrostyrenes and 2-Aminopyridines via the N-(Pyridin-2-yl)iminonitriles as Intermediates

open access: yesMolecules, 2023
A facile, green, synthetic protocol of several substituted N-(pyridin-2-yl)imidates from nitrostyrenes and 2-aminopyridines via the corresponding N-(pyridin-2-yl)iminonitriles as intermediates is reported.
Andriani G. Chaidali, Ioannis N. Lykakis
doaj   +1 more source

Use-dependent potentiation of voltage-gated calcium channels rescues neurotransmission in nerve terminals intoxicated by botulinum neurotoxin serotype A

open access: yesScientific Reports, 2017
Botulinum neurotoxins (BoNTs) are highly potent toxins that cleave neuronal SNARE proteins required for neurotransmission, causing flaccid paralysis and death by asphyxiation.
Phillip H. Beske   +4 more
doaj   +1 more source

Syntheses of novel pyridine-based low-molecular-weight luminogens possessing aggregation-induced emission enhancement (AIEE) properties

open access: yesBeilstein Journal of Organic Chemistry, 2022
Novel pyridine-based fluorescing compounds, viz. pyrido[1,2-a]pyrrolo[3,4-d]pyrimidines 3a,b and N-methyl-4-((pyridin-2-yl)amino)maleimides 4a–e, were selectively prepared by a one-pot reaction between a functionalized maleimide and 2-aminopyridines with
Masayori Hagimori   +4 more
doaj   +1 more source

Pyridine Elaboration through Organometallic Intermediates: Regiochemical Control and Completeness [PDF]

open access: yes, 2007
International audiencePyridines carrying heterosubstituents (such as carboxy, amido, amino, alkoxy or trifluoromethyl groups or solely individual halogen atoms) can be readily and site selectively metalated.
Mongin, Florence, Schlosser, Manfred
core   +4 more sources

Neuroprotective Properties of 4-Aminopyridine [PDF]

open access: yesNeurology Neuroimmunology & Neuroinflammation, 2021
As an antagonist of voltage-gated potassium (Kv) channels, 4-aminopyridine (4-AP) is used as symptomatic therapy in several neurologic disorders. The improvement of visual function and motor skills and relieve of fatigue in patients with MS have been attributed to 4-AP.
Dietrich, Michael   +2 more
openaire   +2 more sources

One-pot synthesis of tetracyclic fused imidazo[1,2-a]pyridines via a three-component reaction

open access: yesBeilstein Journal of Organic Chemistry, 2016
A novel three-component reaction has been developed to assemble biologically and pharmaceutically important tetracyclic fused imidazo[1,2-a]pyridines in a one-pot fashion utilizing readily available 2-aminopyridines, isatins and isocyanides.
Bo Yang   +4 more
doaj   +1 more source

4-Aminopyridine Improves Lower Urinary Tract Symptoms in a Patient With Benign Prostatic Hyperplasia and Downbeat Nystagmus Syndrome [PDF]

open access: yesInternational Neurourology Journal, 2014
Aminopyridines are potassium channel blockers that increase the excitability of nerve cells and axons; therefore, they are widely used to treat different neurological disorders.
Michael Strupp   +3 more
doaj   +1 more source

Synthesis of carbon-11-labeled isonicotinamides as new potential PET agents for imaging of GSK-3 enzyme in Alzheimer’s disease [PDF]

open access: yes, 2017
The authentic standards 2-(cyclopropanecarboxamido)-N-(4-methoxypyridin-3-yl)isonicotinamide (4a) and 2-(cyclopropanecarboxamido)-N-(4-(4-methoxyphenyl)pyridin-3-yl)isonicotinamide (7a), and their corresponding precursors 2-(cyclopropanecarboxamido)-N-(4-
Gao, Mingzhang   +2 more
core   +2 more sources

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