Results 61 to 70 of about 5,326,384 (292)

Antithrombotic Effects of Pyridinium Compounds Formed from Trigonelline upon Coffee Roasting

, 2016
Coffee may exert a preventive effect on arterial thrombosis. Trigonelline is one of the most abundant compounds in coffee that undergoes pyrolysis upon roasting of coffee beans.
Wlodzimierz Buczko (1827205), Agnieszka Leszczynska (1827181), Jan Adamus (1827184), Lukasz Piotrowski (1827187), Tomasz Kaminski (1827190), Andrzej Marcinek (1827193), Jerzy Gebicki (1827199), Andrzej Mogielnicki (703339), Bartosz Michalowski (1827196), Bartlomiej Kalaska (703331), Karol Kramkowski (1827202)   +10 more
core   +1 more source

Supramolecular Allostery Achieves Tunable Luminescence Aromatic Bridged Phenothiazine Noncovalent Frameworks

Advanced Science, EarlyView.
Tunable luminescent supramolecular organic framework enabled by multiple allosteric effects, composed of a tetracation vinylphenylpyridinium‐modified aromatic‐bridged phenothiazine guest and cucurbit[8]uril, not only exhibits unique guest oxidation‐driven NIR luminescence blue‐shift and effectively enhances the quantum yield by 46‐fold to 22.2% but ...
Xinping Lu, Jianchong Chen, Jie Yu
wiley   +1 more source

ELECTROCHEMICAL BEHAVIOUR OF THE NEW HETEROCYCLIC PYRIDINIUM LIGANDS

Studia Universitatis Babes-Bolyai Chemia, 2015
New heterocyclic pyridinium compounds as N,N’ di-(p-bromophenacyl)-4,4’-bipyridinium dibromide (Lr) and N,N’ di-(p-bromophenacyl)-1,2-bis(4-pyridinium)-ethane dibromide (Lm) were investigated applying cyclic voltammetry to evaluate the electrochemical ...
Andreea CÂRÂC, Rica BOSCENCU, Rodica Mihaela DINICĂ, Geta CÂRÂC   +3 more
doaj  

Convenient Transformation of Carbonyl Compounds Via Their Hydrazones into Gem-Difluoro Compounds With N-Bromosuccinimide/pyridinium Poly(Hydrogen Fluoride) Or Poly-4-Vinyl-Pyridinium Poly(Hydrogen Fluoride)

, 1990
In situ generated bromine monofluoride (BrF) from N-bromosuccinimide/pyridinium poly(hydrogen fluoride) or poly-4-vinylpyridinium poly(hydrogen fluoride) reacts with hydrazones to give the corresponding gem-difluoro compounds (8 examples) in satisfactory
Reddy, V. Prakash, Li, Xing Ya, Surya Prakash, G. K., Olah, George A.   +3 more
core   +1 more source

Crystal structure of the human carbonic anhydrase II adduct with 1-(4-sulfamoylphenyl-ethyl)-2,4,6-triphenylpyridinium perchlorate, a membrane-impermeant, isoform selective inhibitor

Journal of Enzyme Inhibition and Medicinal Chemistry, 2018
Pyridinium containing sulfonamides have been largely investigated as carbonic anhydrase inhibitors (CAIs), showing interesting selectivity features. Nevertheless, only few structural studies are so far available on adducts that these compounds form with ...
Vincenzo Alterio, Davide Esposito, Simona Maria Monti, Claudiu T. Supuran, Giuseppina De Simone   +4 more
doaj   +1 more source

Data for the cytotoxicity, self-assembling properties and synthesis of 4-pyridinium-1,4-dihydropyridines

Data in Brief, 2020
In this data file the synthetic procedures for preparation of the original 4-pyridinium-1,4-dihydropyridines (4-Py-1,4-DHP) and their parent compounds – dialkyl 2,6-dimethyl-4-(3-pyridyl)-1,4-dihydropyridine-3,5-dicarboxylates were described. In total, 5
Klavs Pajuste, Martins Rucins, Ilona Domracheva, Arkadij Sobolev, Nadiia Pikun, Mara Plotniece, Gunars Duburs, Karlis Pajuste, Aiva Plotniece   +8 more
doaj   +1 more source

Reaction of Pyridinium Salts Having the Functional Group with Active Methylene Compounds [PDF]

, 2005
The reaction of pyridinium salts having the methylthio or chloro group acting as leaving group with active methylene compounds afforded 1, 2-dihydro-2-[substituted methylene] pyridines under the mild conditions.departmental bulletin ...
トミサワ, ヒロシ, Fujita, Reiko, Nishiuti, Yasuhiro, ニシウチ, ヤスヒロ, Hoshino, Masato, 星野, 正人, 西内, 康祐, 藤田, 礼子, フジタ, レイコ, ホシノ, マサト, Tomisawa, Hiroshi, 富沢, 宏   +11 more
core   +1 more source

Simplexidine, a 4-Alkylpyridinium Alkaloid from the Caribbean Sponge Plakortis simplex

Molecules, 2008
Chemical analysis of the secondary metabolites of the Caribbean sponge Plakortis simplex, a source of many bioactive compounds, showed the presence of the new metabolite simplexidine (4), belonging to the extremely rare class of 4-alkyl-pyridinium ...
Orazio Taglialatela-Scafati, Fernando Scala, Adriana Romano, Ernesto Fattorusso   +3 more
doaj   +1 more source

Sydnone C-4 heteroarylation with an indolizine ring via Chichibabin indolizine synthesis

Beilstein Journal of Organic Chemistry, 2016
The synthesis of sydnones heteroarylated at C-4 with an indolizine was achieved by Chichibabin (Tschitschibabin) indolizine synthesis starting from the corresponding sydnone-N-pyridinium bromides.
Florin Albota, Mino R. Caira, Constantin Draghici, Florea Dumitrascu, Denisa E. Dumitrescu   +4 more
doaj   +1 more source

Inhibition of C1s-induced vascular leakage in guinea pigs by substituted benzamidine and pyridinium compounds.

Journal of Immunology, 1977
A variety of benzamidine and pyridinium compounds were examined for their ability to inhibit irreversibly C1s-induced vascular leakage in guinea pig skin.
J. M. Andrews, Fred S. Rosen, S. Silverberg, Michael Cory, E. Schneeberger, D. Bing   +5 more
semanticscholar   +1 more source