Results 11 to 20 of about 22,841 (254)

PYRIDINIUM, PIPERIDINIUM AND MORPHOLINIUM CATIONIC SURFACTANTS(1): SYNTHESIS, CHARACTERIZATION, HEMOLYSIS AND ANTIOXIDATIVE EFFICIENCY [PDF]

open access: yesAl-Azhar Journal of Pharmaceutical Sciences, 2013
A Series of pyridinium, piperidinium and morpholinium derived cationic surfactants differing in the length of side alkylating chain from C10 to C18 is described.
Nihal Shaker
doaj   +1 more source

The use of pyridinium fluorochromate (PFC) supported on TriSyl silica gel for oxidation reactions [PDF]

open access: yesJournal of the Serbian Chemical Society, 2007
Pyridinium fluorochromate supported on TriSyl silicas was prepared by co-adsorption. The supported reagent was used in equimolar quantity to oxidise some organic compounds with good yields and complete selectivity.
FATMA AYDIN, ERSAN TURUNC
doaj   +3 more sources

Catalytic response and molecular simulation studies in the development of synthetic routes in trimeric triaryl pyridinium type ionic liquids

open access: yesScientific Reports, 2023
Under conventional and silica-supported Muffle furnace methods, water-soluble substituted trimeric triaryl pyridinium cations with various inorganic counter anions are synthesized.
Ramalingam Tamilarasan   +11 more
doaj   +1 more source

4,4′,4″-(Benzene-1,3,5-triyltris(ethyne-2,1-diyl))tris(1-methylpyridin-1-ium) Iodide

open access: yesMolbank, 2023
Despite having been known for a long time, quaternary 4,4′-bipyridinium salts, or viologens, are still a highly inspiring class of compounds, thanks to their peculiar redox and charge transfer properties.
Lorenza Romagnoli   +2 more
doaj   +1 more source

A concise access to bridged [2,2,1] bicyclic lactones with a quaternary stereocenter via stereospecific hydroformylation

open access: yesNature Communications, 2021
Enantiomeric bridged [2,2,1] bicyclic lactone skeletons and their ring-opening products are important scaffolds widely occurring in both pharmaceutics and biology active compounds.
Shuailong Li   +5 more
doaj   +1 more source

SYNTHESIS AND INVESTIGATION OF MAO INHIBITORS: HYDRAZONES OF POTENTIAL BRAIN-SPECIFIC DELIVERY [PDF]

open access: yesBulletin of Pharmaceutical Sciences. Assiut University, 1997
A series of 1-methyl-3-[N-(substituted benzalimino)carbamoyl] pyridinium iodide and their corresponding dihydropyridines were prepared by conventional methods.
Hassan Farag   +2 more
doaj   +1 more source

Investigation of Experimental and In Silico Physicochemical Propertiesof Thiazole-Pyridinium Anti-Acetylcholinesterase Derivatives withPotential Anti-Alzheimer’s Activity [PDF]

open access: yesPharmaceutical Sciences, 2021
Background: Physicochemical properties play important role in fundamental issues likeabsorption and distribution of pharmaceuticals to the target tissue. This is particularly importantfor drugs acting in central nervous system (CNS).
Golaleh Ghotbi   +4 more
doaj   +1 more source

Pyridinium-Inspired Organocatalysts for Carbon Dioxide Fixation: A Density Functional Theory Inspection

open access: yes, 2023
The current project aims to apply the virtues of minimalism to examine the catalytic ability of commercially organic compounds of small chemical structures to catalyze the coupling reaction between carbon dioxide and propylene oxide (PO) under mild ...
Ibtesam M. Desoky   +7 more
core   +1 more source

Hydrogen-bonding chain and dimer motifs in pyridinium and morpholinium hydrogen oxalate salts

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2018
We present here three compounds consisting of pyridinium or morpholinium hydrogen oxalates, each displaying different hydrogen-bonding motifs, resulting in chains for 4-(dimethylamino)pyridinium hydrogen oxalate 0.22-hydrate, C7H11N2+·C2HO4−·0.22H2O (1),
David Z. T. Mulrooney   +5 more
doaj   +1 more source

PART 1: DESIGN, SYNTHESIS AND EVALUATION OF NEW SITE-SPECIFIC MONOAMINE OXIDASE INHIBITORS [PDF]

open access: yesBulletin of Pharmaceutical Sciences. Assiut University, 1998
Certain new monoamine oxidase inhibitors (MAOIs) containing a pyridinium moiety as an integral part of their structures (Q) were designed. The quaternaries, their corresponding 1,4-dihydroxypyridine derivatives (CDS) and their parent pyridine compounds ...
N. Bodor   +4 more
doaj   +1 more source

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