Results 41 to 50 of about 5,082 (203)

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

Royal Society Open Science, 2018
1,4-Dihydropyridine (1,4-DHP) derivatives have been synthesized and characterized by 1 H, 13 C, 15 N nuclear magnetic resonance (NMR) spectroscopy, secondary proton/deuterium 13 C isotope shifts, variable temperature 1 H ...
M. Petrova, R. Muhamadejev, B. Vigante, G. Duburs, Edvards Liepinsh   +4 more
openaire   +3 more sources

Enaminones in a multicomponent synthesis of 4-aryldihydropyridines for potential applications in photoinduced intramolecular electron-transfer systems

Beilstein Journal of Organic Chemistry, 2012
An efficient three component reaction with enaminones, primary amines and aldehydes resulted in easy access to 1,4-dihydropyridines with different substituents at the 1-, 3-, 4- and 5-positions.
Nouria A. Al-Awadi, Maher R. Ibrahim, Mohamed H. Elnagdi, Elizabeth John, Yehia A. Ibrahim   +4 more
doaj   +1 more source

Reactions of biologically inspired hydride sources with B(C6F5)3 [PDF]

, 2017
The combination of 1-benzyl-1,4-dihydropyridines with the strong Lewis acid, B(C6F5)3, generates a stable pyridinium borohydride species in high yields (94%) in as little as 10 min.
Luk, Louis Y. P., Melen, Rebecca L., Santi, Nicolo, Wilkins, Lewis C.   +3 more
core   +1 more source

An Efficient One-Pot Three-Component Synthesis of Fused 1,4-Dihydropyridines Using HY-Zeolit

Molecules, 2009
A facile and convenient protocol was developed for the fast (2.5-3.5 h) and high yielding (70-90 %) synthesis of fused 1,4-dihydropyridines from dimedone in the presence of HY-zeolite as an efficient recyclable heterogeneous catalyst.
Khalil Tabatabaeian, Mohammad Nikpassand, Manouchehr Mamaghani   +2 more
doaj   +3 more sources

One-pot multicomponent green Hantzsch synthesis of 1,2-dihydropyridine derivatives with antiproliferative activity

Beilstein Journal of Organic Chemistry, 2020
A rapid route for obtaining unsymmetrical 1,2-dihydropyridines (1,2-DHPs) as opposed to 1,4-dihydropyridines (1,4-DHPs) has been achieved via a one-pot multicomponent Hantzsch reaction.
Giovanna Bosica, Kaylie Demanuele, José M. Padrón, Adrián Puerta   +3 more
doaj   +1 more source

An efficient Hantzsch synthesis of 1,4-dihydropyridines using p-toluenesulfonic acid under solvent-free condition [PDF]

Maejo International Journal of Science and Technology, 2014
An efficient Hantzsch synthesis of various substituted 1,4-dihydropyridines from an aldehyde, a β-dicarbonyl compound and ammonium acetate using p-toluenesulfonic acid in a solvent-free condition in the absence of any other co ...
Masoud Nasr-Esfahani , Morteza Montazerozohori , Razieh Raeatikia   +2 more
doaj   +1 more source

Transfer hydrosilylation [PDF]

, 2016
Transfer hydrogenation is without question a common technology in industry and academia. Unlike its countless varieties, conceptually related transfer hydrosilylations had essentially been unreported until the recent development of a radical and an ionic
Oestreich, Martin
core   +1 more source

Chemoenzymatic Synthesis of Enantiopure 1,4‐Dihydropyridine Derivatives

ChemInform, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Sobolev, A., Franssen, M.C.R., Duburs, G., de Groot, Æ.   +3 more
openaire   +2 more sources

N,N'-Ethylene-bis(benzoylacetoniminato) Copper (II), Cu(C22H22N2O2), a New Reagent for Aromatization of Hantzsch 1,4-Dihydropyridines

Molecules, 2007
A variety of Hantzsch 1,4-dihydropyridines were oxidized to their corresponding pyridines in high yields in the presence of Cu(C22H22N2O2) in refluxing acetic acid.
Majid M Heravi, Saeed Dehghanpour, Fatemeh Derikvand   +2 more
doaj   +1 more source

Dihydropyridines Potentiate ATP-Induced Currents Mediated by the Full-Length Human P2X5 Receptor

Molecules, 2022
The P2X5 receptor, an ATP-gated cation channel, is believed to be involved in tumor development, inflammatory bone loss and inflammasome activation after bacterial infection. Therefore, it is a worthwhile pharmacological target to treat the corresponding
Ida C. Schiller, Kenneth A. Jacobson, Zhiwei Wen, Aparna Malisetty, Günther Schmalzing, Fritz Markwardt   +5 more
doaj   +1 more source