Results 131 to 140 of about 20,507 (274)

AROMATIZATION OF 1,4-DIHYDROPYRIDINES WITH FREE RADICAL REAGENTS [PDF]

Journal of Sciences, Islamic Republic of Iran, 2001
Oxidation of different types of 1,4-dihydropyridines with diphenylpicrylhydrazyl (DPP) and benzoyl peroxide (Bz2O2) as free radical oxidizing agents to pyridine derivatives is reported and a mechanism for this oxidation is also proposed.
doaj  

Melamine trisulfonic acid as an efficient catalyst for the synthesis of 2,6-dimethyl-4-substituted-1,4-dihydropyridine-3,5-diethyl/dimethylcarboxylate derivatives via Hantzsch reaction in solvent free condition

, 2013
S. Sheik Mansoor, K. Aswin, K. Logaiya, S.P.N. Sudhan   +3 more
openalex   +1 more source

Novel Biopolymer-Based Catalyst for the Multicomponent Synthesis of N-aryl-4-aryl-Substituted Dihydropyridines Derived from Simple and Complex Anilines

Molecules
Although Hantzsch synthesis has been an established multicomponent reaction method for more than a decade, its derivative, whereby an aniline replaces ammonium acetate as the nitrogen source, has not been explored at great length.
Giovanna Bosica, Roderick Abdilla
doaj   +1 more source

Synthesis and Effects of Novel Dihydropyridines as Dual Calcium Channel Blocker and Angiotensin Antagonist on Isolated Rat Aorta [PDF]

, 2009
Four novel losartan analogues 5a-d were synthesized by connecting a dihydropyridine nucleus to imidazole ring. The effects of 5a and 5b on angiotensin receptors (AT1) and L-type calcium channels were investigated on isolated rat aorta.
Farzin Hadizadeh, Mohsen Imenshahidi, Morteza Taghiabadi, Payman Esmaili   +3 more
core  

Synthesis of Indenones via Persulfate Promoted Radical Alkylation/Cyclization of Biaryl Ynones with 1,4-Dihydropyridines

Molecules
The oxidative radical cascade cyclization of alkynes has emerged as a versatile strategy for the efficient construction of diverse structural units and complex molecules in organic chemistry.
Wanwan Wang, Lei Yu
doaj   +1 more source

Regioselective reactions of 3,4-pyridynes enabled by the aryne distortion model. [PDF]

, 2013
The pyridine heterocycle continues to play a vital role in the development of human medicines. More than 100 currently marketed drugs contain this privileged unit, which remains highly sought after synthetically. We report an efficient means to access di-
Garg, Neil K, Goetz, Adam E
core  

High voltage activated Ca2+ channel [PDF]

, 1993
A Cavalié, A Hui, A Mikami, A Röhrkasten, A Welling, A Welling, AE Lacerda, AM Brown, C Kleuss, C Mundina-Weilenmann, D Singer, E Bosse, E Bosse, E Perez-Reyes, E Perez-Reyes, E Perez-Reyes, E Rios, EI Rotman, F Hofmann, G Varadi, H Nakayama, HL Kim, HR Guy, HS Kim, IM Mintz, J Garcia, J Striessnig, J Striessnig, K Itagaki, K Nunoki, KS Jongh De, KS Jongh De, KS Jongh De, L Hymel, M Bertolino, M Biel, M Biel, M Kameyama, M Pragnell, ME Williams, ME Williams, P Lory, P Ruth, R Hullin, R Staudinger, RI Norman, RJ Diebold, RJ Miller, RS Kass, S Hamilton, S Regulla, S Seino, SB Ellis, SD Jay, SD Jay, SJ Dubel, T Schneider, T Tanabe, T Tanabe, T Tanabe, T Tanabe, TP Snutch, TP Snutch, TVB Starr, U Klöckner, V Flockerzi, W Trautwein, WJ Koch, X Wei, Y Lai, Y Mori   +70 more
core   +1 more source

AROMATIZATION OF 1 , CDIHYDROPYRIDINES WITH OXYGEN OR AIR USING MANGANESE AND COBALT SALTS OF p-AMINOBENZOIC ACID SUPPORTED ON SILICA GEL AS OXIDIZING CATALYSTS [PDF]

Journal of Sciences, Islamic Republic of Iran, 1998
Hantzsch 1,4-dihydropyridines are oxidized to the corresponding pyridine derivatives using oxygen or air and a mixture of the manganese and cobalt salts of parninobenzoic acid supported on silica gel as the catalysts.
doaj  

Synthesis of arylpiridines with us on bifuntional catalysts Me/SiO2-SO3H (Me= Au, Ir, Pt) [PDF]

, 2016
Se estudió la reacción multicomponente de Hantzsch para la obtención de compuestos derivados de la familia 2-arilpiridinas, usando catalizadores bifuncionales tipo Me/SiO2-SO3H (Me = Au, Pt, Ir). Los catalizadores se caracterizaron por distintas técnicas
Martinez, José, Nope Vargas, Eliana Rocio, Rojas, Hugo, Romanelli, Gustavo Pablo, Sathicq, Angel Gabriel   +4 more
core  

Effects of dihydropyridines on tension and calcium-45 influx in isolated mesenteric resistance vessels from spontaneously hypertensive and normotensive rats

, 1987
Cynthia Cauvin, Ok Jin Hwang, Mieko YAMAMOTO, Cornelis van Breemen   +3 more
openalex   +1 more source