Results 11 to 20 of about 5,642 (192)

Thermal and Emission Properties of a Series of Lanthanides Complexes with N-Biphenyl-Alkylated-4-Pyridone Ligands: Crystal Structure of a Terbium Complex with N-Benzyl-4-Pyridone [PDF]

open access: yesMolecules, 2021
This work focuses on the investigation of the liquid crystalline behavior and luminescence properties of the lanthanide complexes of Eu(III), Sm(III) and Tb(III) with N-biphenyl-alkylated-4-pyridone ligands.
Florentina L. Chiriac   +5 more
doaj   +2 more sources

Rhodium(I)-Complexes Catalyzed 1,4-Conjugate Addition of Arylzinc Chlorides to N-Boc-4-pyridone [PDF]

open access: yesMolecules, 2017
Rhodium(I)-complexes catalyzed the 1,4-conjugate addition of arylzinc chlorides to N-Boc-4-pyridone in the presence of chlorotrimethylsilane (TMSCl). A combination of [RhCl(C2H4)2]2 and BINAP was determined to be the most effective catalyst to promote ...
Fenghai Guo   +5 more
doaj   +2 more sources

2-Ethyl-3-hydroxy-1-isopropyl-4-pyridone [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2012
The title compound, C(10)H(15)NO(2), crystallized with three mol-ecules in the asymmetric unit. These three mol-ecules are quite similar except for slight differences in the torsion angles of the substituents on the ring. The isopropyl C-C-N-C torsion angles (towards the carbon next to the ethyl bound carbon), for example, are -150.63 (11), -126.77 (13)
Molokoane, Pule P.   +2 more
openaire   +3 more sources

Crystal structure of benzene-1,3,5-tricarboxylic acid–4-pyridone (1/3) [PDF]

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
Slow co-crystallization of a solution of benzene-1,3,5-tricarboxylic acid with a large excess of 4-hydroxypyridine produces an interpenetrating, three-dimensional, hydrogen-bonded framework consisting of three 4-pyridone and one benzene-1,3,5 ...
Selena L. Staun, Allen G. Oliver
doaj   +2 more sources

Classical QSAR and Docking Simulation of 4-Pyridone Derivatives for Their Antimalarial Activity [PDF]

open access: yesMolecules, 2018
In this work, the minimum energy structures of 22 4-pyridone derivatives have been optimized at Density Functional Theory level, and several quantum molecular, including electronic and thermodynamic descriptors, were computed for these substrates in ...
Máryury Flores-Sumoza   +5 more
doaj   +2 more sources

Synthesis and Evaluation of Antitumor and Anti-Angiogenesis Activity of Pyrone- or Pyridone-Embedded Analogs of Cortistatin A [PDF]

open access: yesMarine Drugs
Simplified analogs of cortistatin A were synthesized and biologically evaluated to develop novel antitumor substances that target angiogenesis. To analyze the effect of substituents at positions corresponding to C-2 and/or C-4 of the A-ring, various ...
Yuri Fujimoto   +4 more
doaj   +2 more sources

Endophytic Akanthomyces sp. LN303 from Edelweiss Produces Emestrin and Two New 2‑Hydroxy‑4 Pyridone Alkaloids [PDF]

open access: yesACS Omega, 2021
Martina Oberhofer   +7 more
doaj   +2 more sources

An isoxazole strategy for the synthesis of 4-oxo-1,4-dihydropyridine-3-carboxylates

open access: yesBeilstein Journal of Organic Chemistry, 2022
A method has been developed for the preparation of 2-alkyl-6-aryl-, 2-aryl-6-aryl and 2,6-diaryl-5-aryl/hetaryl-substituted methyl 4-oxo-1,4-dihydropyridine-3-carboxylates by Mo(CO)6-mediated ring expansion of methyl 2-(isoxazol-5-yl)-3-oxopropanoates ...
Timur O. Zanakhov   +3 more
doaj   +1 more source

Synthesis and insecticidal activity of some pyrazole, pyridine, and pyrimidine candidates against Culex pipiens L. larvae [PDF]

open access: yesScientific Reports
The expansion of the Culex pipiens population has increased the spread of arboviruses, due to the ineffectiveness of several traditional insecticides available to control this vector. Some heterocycles bearing a benzoquinoline moiety, such as pyrazoline,
Eman A. E. El-Helw   +4 more
doaj   +2 more sources

Synthesis of 5-Aroyl-2-aryl-3-hydroxypyridin-4(1H)-ones

open access: yesMolbank, 2023
A two-stage synthesis of 5-aroyl-2-aryl-3-hydroxypyridin-4(1H)-ones (56–66% overall yields) was carried out by refluxing 5-aroyl-3-(benzyloxy)-2-(het)aryl-4H-pyran-4-ones with ammonium acetate in AcOH and subsequent debenzylation.
Elena V. Steparuk   +2 more
doaj   +1 more source

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