Results 21 to 30 of about 7,997 (204)

Whole blood NAD and NADP concentrations are not depressed in subjects with clinical pellagra [PDF]

open access: yes, 2007
Population surveys for niacin deficiency are normally based on clinical signs or on biochemical measurements of urinary niacin metabolites. Status may also be determined by measurement of whole blood NAD and NADP concentrations. To compare these methods,
Cheung, E   +5 more
core   +2 more sources

An Efficient Synthesis of Nitrated Cycloalka[b]pyridines [PDF]

open access: yes, 2014
The three-component ring transformation of 1-methyl-3,5-dinitro-2-pyridone with cycloalkanones of different ring sizes in the presence of ammonium acetate affords the corresponding nitrated cycloalka[b]pyridines in high yields. Furthermore, a double bond
1428   +5 more
core   +1 more source

A ‘bottom up’, ab initio computational approach to understanding fundamental photophysical processes in nitrogen containing heterocycles, DNA bases and base pairs [PDF]

open access: yes, 2016
A systematic computational study of non-radiative decay pathways following UV excitation of selected heterocycles, DNA bases, nucleosides and base-pairs in the gas phase.
Ashfold, Michael N R   +3 more
core   +2 more sources

Newborn Urinary Metabolic Signatures of Prematurity and Other Disorders: A Case Control Study [PDF]

open access: yes, 2001
This work assesses the urinary metabolite signature of prematurity in newborns by nuclear magnetic resonance (NMR) spectroscopy, while establishing the role of possible confounders and signature specificity, through comparison to other disorders.
Sílvia O. Diaz   +13 more
core   +3 more sources

Diversity-oriented functionalization of 2-pyridones and uracils

open access: yesNature Communications, 2021
Diversity-oriented synthesis of 2-pyridone and uracil derivatives is in urgent need in medicinal chemistry as they are useful pharmacophores. Here the authors show that palladium/norbornene cooperative catalysis enabled dual-functionalization of ...
Yong Shang   +8 more
doaj   +1 more source

Ribonucleotide reductase, a novel drug target for gonorrhea

open access: yeseLife, 2022
Antibiotic-resistant Neisseria gonorrhoeae (Ng) are an emerging public health threat due to increasing numbers of multidrug resistant (MDR) organisms. We identified two novel orally active inhibitors, PTC-847 and PTC-672, that exhibit a narrow spectrum ...
Jana Narasimhan   +15 more
doaj   +1 more source

Synthesis of 2-Aryl-5-Nitropyridines by Three-Component Ring Transformation of 3,5-Dinitro-2-Pyridone [PDF]

open access: yes, 2014
2-Arylated-5-nitropyridines were efficiently synthesized by a three-component ring transformation of 3,5-dinitro-2-pyridone with aromatic ketones in the presence of ammonium acetate, in which the dinitropyridone serves as a synthetic equivalent of an ...
1310   +11 more
core   +1 more source

6-Methyl-2-pyridone pentahydrate [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2004
Crystals of the title compound, C6H7NO·5H2O, were grown over a period of several weeks from an aqueous solution of the commercial compound. The mol­ecule crystallizes in space group P\overline 1 and there are two independent 6-methyl-2-pyridone (Hmhp) mol­ecules in the asymmetric unit, together with ten mol­ecules of water.
Clegg W, Nichol GS
openaire   +2 more sources

Characterization studies of 1-(4-cyano-2-oxo-1,2-dihydro-1-pyridyl)-3-(4-cyano-1,2-dihydro-1-pyridyl)propane formed from the reaction of hydroxide Ion with 1,3-Bis-(4-cyano pyridinium)propane [PDF]

open access: yes, 2011
The aqueous alkaline reaction of 1,3-bis(4-cyanopyridinium)propane dibromide, a reactant constituted of two pyridinium rings linked by a three-methylene bridge, generates a novel compound,1 -(4-cyano-2-oxo-1,2-dihydro-1-pyridyl)-3-(4-cyano-1,2-dihydro-1 ...
CATALANI, Luiz H   +7 more
core   +1 more source

catena-Poly[[[(2-pyridone-κO)silver(I)]-μ-2-pyridone-κ2O:O] hexafluoridophosphate]

open access: yesActa Crystallographica Section E, 2010
The asymmetric unit of the polymeric title salt, {[Ag(C5H5NO)2]PF6}n, comprises an AgI cation (located on a twofold axis), two 2-pyridone ligands (with distinct coordination modes), and half a PF6− anion (situated on a centre of inversion). The
Edward R. T. Tiekink   +2 more
doaj   +1 more source

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