Results 21 to 30 of about 5,843 (268)

Rearrangement of o-Nitrobenzaldehyde in the Hantzsch Reaction

Molecules, 2001
The reaction of 5-hydroxy-2-nitrobenzaldehyde with ethyl acetoacetate in ammonia gave the two expected isomeric 1,4- and 1,2-dihydropyridines resulting from the normal Hantzsch reaction.
R. Martínez, R. López- Castañares, A. Velázquez, A. Ramírez, I. Martínez, I. Menconi, H. Santillán, E. Angeles   +7 more
doaj   +1 more source

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

1, 4-Dihydropyridine Derivatives : Dihydronicotinamide Analogues—Model Compounds Targeting Oxidative Stress1, 4-Dihydropyridine Derivatives: Dihydronicotinamide Analogues—Model Compounds Targeting Oxidative Stress

Oxidative medicine and cellular longevity, 2016
Many 1, 4-dihydropyridines (DHPs) possess redox properties. In this review DHPs are surveyed as protectors against oxidative stress (OS) and related disorders, considering the DHPs as specific group of potential antioxidants with bioprotective capacities. They have several peculiarities related to antioxidant activity (AOA).
Žarković, Neven, Gall Trošelj, Koraljka   +1 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

Green synthesis of nano binary oxide SiO2/V2O5 NPs integrated ointment cream application on wound dressings and skin cancer cells [PDF]

, 2023
 اشتملت الدراسة الحالية على تحضير المزدوج النانو SiO2/V2O5  باستخدام مواد طبيعية خام كمادة أولية حيث استخدمت رماد قشور الارز بعد حرقها بدرجة  °C700  سيليزية  للتخلص من المواد العضوية واللاعضوية في القشور حيث كانت هي  المادة الخام لاستخلاص السليكا جل ...
Ali, Marwa, Drea, Abbas A-Ali
core   +2 more sources

First organocatalytic asymmetric synthesis of 1-Benzamido-1, 4-Dihydropyridine Derivatives [PDF]

, 2018
Preliminary results concerning the first asymmetric synthesis of highly functionalized 1-benzamido-1, 4-dihydropyridine derivatives via the reaction of hydrazones with alkylidenemalononitriles in the presence of ß-isocupreidine catalyst are reported. The
Auria-Luna, F., Marqués-López, E., Perez Herrera, R.   +2 more
core   +1 more source

Rapid, Greener and One-pot Four Component Synthesis of 1, 4-Dihydropyridine Derivatives

Analytical Chemistry Letters, 2022
In this current research framework, an efficient greener synthesis has been developed for new pyridine derivatives using one-pot four-component reaction. We have synthesized a new series of 1,4-dihydropyridine derivatives in excellent yield via telescopic multicomponent reaction among the aldehyde, malononitrile, anilines and diethyl ...
Jadeja, Kiranba F., Joshi, Hitendra S.
openaire   +1 more source

Direct Aminolysis of Ethoxycarbonylmethyl 1,4-Dihydropyridine-3-carboxylates

Molecules, 2015
The ethoxycarbonylmethyl esters of 1,4-dihydropyridines were directly converted into carbamoylmethyl esters in the presence of 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) in good to excellent yields under mild conditions.
Brigita Vigante, Martins Rucins, Aiva Plotniece, Karlis Pajuste, Iveta Luntena, Brigita Cekavicus, Egils Bisenieks, Rufus Smits, Gunars Duburs, Arkadij Sobolev   +9 more
doaj   +1 more source

Cardiovascular Profile of Xanthone-Based 1,4 Dihydropyridines Bearing a Lidoflazine Pharmacophore Fragment

Molecules, 2018
As a follow-up to our previous studies on differently substituted 1,4-dihydropyridines endowed with a peculiar cardiac selectivity, in this paper, a small series of hybrid compounds bearing the pharmacophore fragment of lidoflazine in position 2 or 3 on ...
Alessandra Bisi, Matteo Micucci, Silvia Gobbi, Federica Belluti, Roberta Budriesi, Angela Rampa   +5 more
doaj   +1 more source

CERIC (IV) AMMONIUM NITRATE CATAYSED HUNTZSCH SYNTHESIS ,CHARACTERIZATION AND ANTIBACTERIAL ACTIVITY OF 1-4 DIHYDROPYRIDINE [PDF]

, 2020
1,4-Dihydropyridine (1,4-DHP) is among the most beneficial scaffolds that have revolutionized pharmaceutical research with unprecedented biological properties.
G, Vanaja
core   +1 more source