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Investigation of Catalytic Activity of Pillared-layer Ni (II) Metal-Organic Framework Derived NiO Nanoparticles for Aromatization of Hantzsch 1,4-Dihydropyridines [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2020
The pillared-layer metal-organic framework of Ni2(BTEC)(bipy)3.3DMF.2H2O  (BTEC = 1,2,4,5-benzenetetracarboxylate; bipy = 4,4́-bipydine; DMF =N,Ń-dimethylformamide) was prepared, characterized and used as a precursor for preparation of NiO nanoparticles.
Zeinab Asgharpour, Faezeh Farzaneh
doaj   +3 more sources

Synthesis of 1,4-Dihydropyridines Bearing a Carbamate Moiety on the 4-Position [PDF]

open access: goldJournal of Chemistry, 2013
A good range of 1,4-dihydropyridines bearing a carbamate moiety on the 4-position were synthesized from the primary reaction of different hydroxyaldehydes with phenyl isocyanates and the subsequent reaction of the obtained carbamates with methyl ...
Davood Habibi   +2 more
doaj   +2 more sources

Catalytic Asymmetric Synthesis of Both Enantiomers of 4‑Substituted 1,4-Dihydropyridines with the Use of Bifunctional Thiourea-Ammonium Salts Bearing Different Counterions [PDF]

open access: goldMolecules, 2010
Organoammonium salts composed of a Brønsted acid and an anilinothiourea promoted the Michael addition of β-keto esters and α,β-unsaturated aldehydes in the presence of primary amines to give functionalized 1,4-dihydropyridines enantioselectively.
Kohzo Yoshida   +3 more
doaj   +2 more sources

Design and synthesis of novel 4-substituted 1,4-dihydropyridine derivatives as hypotensive agents

open access: hybridJournal of Saudi Chemical Society, 2016
Calcium-channel blockers have an important role in the treatment of several cardiovascular disorders. Derivatives of 1,4-dihydropyridines are one of the most potent calcium antagonists.
Prasanna A. Datar, Pratibha B. Auti
doaj   +2 more sources

The single Fe atoms and DDQ catalyst system for the aerobic dehydrogenation of dihydropyridines and dihydroquinazolinones [PDF]

open access: yesScientific Reports
Single-atom nanozymes (SAzymes) made of iron show great potential as artificial enzymes due to their consistent active sites closely resembling the active centers found in natural enzymes. They can be produced from accessible and affordable raw materials,
Hamzeh Veisi, Amin Rostami
doaj   +2 more sources

Synthesis new fluorinated 4-phenyl-1,4-dihydropyridine derivatives, as perspective antiarrhythmic and antihypertensive drugs

open access: yesResults in Chemistry, 2023
Derivatives of dihydropyridines are promising agents for research, as they have high biological activity. Their low toxicity and polytargeted properties make it possible to create new derivatives and identify new biological activity. As part of this work,
Arkadiy Bryzgalov   +3 more
doaj   +1 more source

Data for the synthesis and characterisation of 2,6-di(bromomethyl)-3,5-bis(alkoxycarbonyl)-4-aryl-1,4-dihydropyridines as important intermediates for synthesis of amphiphilic 1,4-dihydropyridines

open access: yesData in Brief, 2020
This data file describes the synthetic protocol for preparation of the original 2,6-di(bromomethyl)-3,5-bis(alkoxycarbonyl)-4-aryl-1,4-dihydropyridines. In total, 6 unpublished compounds were obtained and characterised.
Martins Rucins   +6 more
doaj   +1 more source

Intramolecular hydrogen bonds in 1,4-dihydropyridine derivatives [PDF]

open access: yesRoyal Society Open Science, 2018
1,4-Dihydropyridine (1,4-DHP) derivatives have been synthesized and characterized by 1H, 13C, 15N nuclear magnetic resonance (NMR) spectroscopy, secondary proton/deuterium 13C isotope shifts, variable temperature 1H NMR experiments and quantum-chemical ...
M. Petrova   +4 more
doaj   +1 more source

MODULATION OF CALCIUM CHANNELS IN ARTERIAL SMOOTH-MUSCLE CELLS BY DIHYDROPYRIDINE ENANTIOMERS [PDF]

open access: yes, 1993
The actions of the optical enantiomers of BAY K 8644 and Sandoz 202,791 were studied on barium inward currents recorded using the whole-cell configuration of the patch clamp technique from enzymatically isolated smooth muscle cells from the rabbit ear ...
Bolton, TB   +3 more
core   +1 more source

Synthesis and anticholinesterase activity of a novel series of acetazolamide condensed 1,4-dihydropyridines

open access: yesCarbon Resources Conversion, 2019
A novel Acetazolamide condensed 1, 4-dihydropyridines was set up by treating of N-(5-acetamido-1, 3, 4-thiadiazol-2-ylsulfonyl)-3-oxobutanamide with an aryl aldehyde and 25–30% alkali with sight amount of barium nitrate as a catalyst. Confirmation of the
Mudduluru Niranjan Babu   +5 more
doaj   +1 more source

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