Results 11 to 20 of about 146,224 (211)

Antimicrobial Activity of Some Derivatives of 1,4-Dihydropyridines [PDF]

Journal of Chemistry, 2013
Hantzsch reported the synthesis of functionalized 1,4-dihydropyridines via three-component condensation of an aromatic aldehyde, ketoester, and ammonium hydroxide.
Prabha Mehta, Prabha Verma
doaj   +2 more sources

Four-Component Fusion Protocol with NiO/ZrO₂ as a Robust Recyclable Catalyst for Novel 1,4-Dihydropyridines. [PDF]

ACS Omega, 2019
Nickel oxide loaded on zirconia (NiO/ZrO2) as an expedient catalyst is reported for the synthesis of 18 unsymmetrical 1,4-dihydropyridine derivatives.
Bhaskaruni SVHS, Maddila S, van Zyl WE, Jonnalagadda SB.   +3 more
europepmc   +4 more sources

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   +2 more sources

Anticancer Activity of 4-Aryl-1,4-Dihydropyridines

Future Pharmacology
We have synthesized 22 symmetric and asymmetric 4-aryl-1,4-dihydropyridines (1,4-DHPs) by a “green” microwave-assisted one-pot multicomponent Hantzsch reaction and evaluated their cytotoxicity to three human cancer cell lines regarding U-251MG (human ...
Thaís A. S. Oliveira, Jackson B. A. Silva, Tábata R. Esperandim, Nathália O. Acésio, Denise C. Tavares, Antônio E. M. Crotti   +5 more
doaj   +2 more sources

A Facile Transformation of Amino acids into 1,4-dihydropyridines and their Crystallographic Analysis [PDF]

, 2021
A facile transformation of amino acids into substituted 1,4-dihydropyridines (1,4-DHP) is reported. The natural amino acids were converted into gamma-amino beta-keto esters and used for the synthesis of substituted 1,4-dihydropyridines from the ...
Anindita, Adak, Puneeth , Koppal
core   +2 more sources

Radical‐Based C−C Bond‐Forming Processes Enabled by the Photoexcitation of 4‐Alkyl‐1,4‐dihydropyridines [PDF]

Angewandte Chemie - International Edition, 2017
Paolo Melchiorre, Luca Buzzetti, Sudipta Raha Roy   +2 more
exaly   +2 more sources

The unique reactivity of 5,6-unsubstituted 1,4-dihydropyridine in the Huisgen 1,4-diploar cycloaddition and formal [2 + 2] cycloaddition

Beilstein Journal of Organic Chemistry, 2023
The three-component reaction of isoquinolines, dialkyl acetylenedicarboxylates, and 5,6-unsubstituted 1,4-dihydropyridines in acetonitrile at room temperature afforded functionalized isoquinolino[1,2-f][1,6]naphthyridines in good yields and with high ...
Xiu-Yu Chen, Hui Zheng, Ying Han, Jing Sun, Chao-Guo Yan   +4 more
doaj   +1 more source

Transition-Metal-Free Alkylation and Acylation of Benzoxazinones with 1,4-Dihydropyridines

, 2021
The direct functionalization of N-heterocycles is a vital transformation for the development of pharmaceuticals, functional materials, and other chemical entities.
Prithwish Ghosh (7122755), Neeraj Kumar Mishra, Hyung Sik Kim (780440), Youjung Byun, In Su Kim, Junghyea Moon (11291889), Junghyea Moon, In Su Kim (1433776), Won An, Prithwish Ghosh, Neeraj Kumar Mishra (1565998), Hyung Sik Kim, Youjung Byun (10750326), Won An (6874367)   +13 more
core   +2 more sources

Cobalt-Catalyzed Selective Dearomatization of Pyridines to N–H 1,4-Dihydropyridines

, 2022
Catalytic reduction of pyridines to N–H 1,4-dihydropyridines is exceptionally challenging because they are essential intermediates to form tetrahydropyridines.
Lan Liu (88052), Chen-Ho Tung, Tianyi Geng (12413767), Rong-Zhen Liao (1354074), Rong-Zhen Liao, Lan Liu, Yufang Xie (1893214), Le-Le Shi, Wenguang Wang (559519), Maofu Pang, Wenguang Wang, Chen-Ho Tung (654283), Yufang Xie, Tianyi Geng, Maofu Pang (5158670), Le-Le Shi (12413764)   +15 more
core   +1 more source

Visible-Light-Promoted Trifluoromethylthiolation and Trifluoromethylselenolation of 1,4-Dihydropyridines

, 2022
We report a metal-free trifluoromethylthiolation and trifluoromethylselenolation of 1,4-dihydropyridines with S-(trifluoromethyl) 4-methylbenzenesulfonothioate and Se-(trifluoromethyl) 4-methylbenzenesulfonoselenoate under visible light irradiation. This
Enxue Chen (14303621), Xia Zhao (215170), Kui Lu (1643149), Xiwen Shan, Xiaoxing Wang (14912), Juyan Liu, Xia Zhao, Kui Lu, Xiwen Shan (14303618), Xiaoxing Wang, Enxue Chen, Juyan Liu (382746)   +11 more
core   +1 more source