Results 11 to 20 of about 971 (170)

Synthesis of diverse dihydropyrimidine-related scaffolds by fluorous benzaldehyde-based Biginelli reaction and post-condensation modifications [PDF]

open access: yesBeilstein Journal of Organic Chemistry, 2011
Dihydropyrimidinones and dihydropyrimidinethiones generated from the Biginelli reactions of perfluorooctanesulfonyl-attached benzaldehydes are used as common intermediates for post-condensation modifications such as cycloaddition, Liebeskind–Srogl ...
Bruno Piqani, Wei Zhang
doaj   +2 more sources

O,S,Se-containing Biginelli products based on cyclic β-ketosulfone and their postfunctionalization [PDF]

open access: yesBeilstein Journal of Organic Chemistry
A one-pot three-component Biginelli synthesis of dihydropyrimidinones/thiones/selenones via acetic acid or solvent-free Yb(OTf)3-catalyzed tandem reaction of β-ketosulfone (dihydro-2H-thiopyran-3(4H)-one-1,1-dioxide), an appropriate urea, and ...
Kateryna V. Dil, Vitalii A. Palchykov
doaj   +2 more sources

Ultrasound-assisted one-pot synthesis of dihydropyrimid-2-one/thiones catalyzed by zirconyl chloride hexahydrate [PDF]

open access: yesمجلة التربية والعلم, 2013
Different substituted dihydropyrimidinones and  dihydropyrimidin thiones were generated from the Biginelli reaction between aromatic aldehydes, 1,3-dicarbonyl and urea or thiourea under ultrasonic irradiation method.
Omar Yahya, Badie Ahmed, Imad Thanoon
doaj   +1 more source

Development of Styryl-Modified 3,4-Dihydropyrimidin-2(1H)-ones as Potential Antitumor Agents. [PDF]

open access: yesChemMedChem
Styryl‐modified 3,4‐dihydropyrimidin‐2(1H)‐ones (DHPMs), designed from the Eg5 inhibitor monastrol, show markedly enhanced antiproliferative activity in HeLa and MCF‐7 cancer cells. Lead compounds 16 and 17 trigger apoptosis through cell‐line‐specific pathways and downregulate c‐Myc, emerging as promising anticancer candidates.
Panagoulias K   +10 more
europepmc   +2 more sources

Anticancer Polymers via the Biginelli Reaction [PDF]

open access: yesACS Macro Letters, 2020
We developed a polymer-drug strategy to explore anticancer polymers. A series of monomers containing groups with potential anticancer activity have been facilely prepared through the Biginelli reaction. These monomers were used to produce water-soluble polymers through convenient radical copolymerization.
Yongsan Li   +6 more
openaire   +3 more sources

Double catalytic effect of (PhNH3)2CuCl4 in a novel, highly efficient synthesis of 2-oxo and thioxo-1,2,3,4-tetra-hydopyrimidines [PDF]

open access: yesJournal of the Serbian Chemical Society, 2015
An innovative route for the construction of 2-oxo and thioxo-1,2,3,4-tetrahydropyrimidines was delineated through a multicomponent reaction under Biginelli conditions, starting from different aromatic aldehydes, β-ketoesters and urea or thiourea.
Janković Nenad   +2 more
doaj   +1 more source

Synthesis of 3,4-Dihydropyrimidin(thio)one Containing Scaffold: Biginelli-like Reactions

open access: yesPharmaceuticals, 2022
The interest in 3,4-dihydropyrimidine-2(1H)-(thio)ones is increasing every day, mainly due to their paramount biological relevance. The Biginelli reaction is the classical approach to reaching these scaffolds, although the product diversity suffers from ...
Francisco Sánchez-Sancho   +6 more
doaj   +1 more source

Highly Enantioselective Organocatalytic Biginelli Reaction [PDF]

open access: yesJournal of the American Chemical Society, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Xiao-Hua, Chen   +4 more
openaire   +2 more sources

Copper(II) Sulfamate: An Efficient Catalyst for the One-Pot Synthesis of 3,4-Dihydropyrimidine-2(1H)-ones and thiones

open access: yesMolecules, 2009
A simple, efficient procedure for the one-pot Biginelli condensation reaction of aldehydes, β-ketoesters and urea or thiourea employing copper(II) sulfamate as a novel catalyst is described.
Ji-De Wang, Chen-Jiang Liu
doaj   +1 more source

One Pot Synthesis of Micromolar BACE-1 Inhibitors Based on the Dihydropyrimidinone Scaffold and Their Thia and Imino Analogues

open access: yesMolecules, 2020
A library of dihydropyrimidinones was synthesized via a “one-pot” three component Biginelli reaction using different aldehydes in combination with β-dicarbonyl compounds and urea.
Jessica Bais   +8 more
doaj   +1 more source

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