Results 41 to 50 of about 4,834 (175)
Binuclear Copper‐Dependent Oxidative Enzymes Involved in Fungal Natural Product Modifications
Journal of the Chinese Chemical Society, EarlyView.This article summarizes recent biochemical characterizations of a new enzyme family named by the authors as binuclear copper‐dependent oxidative enzymes (BiNCOs). Found in fungal natural product biosynthesis, BiNCOs catalyze diverse CH functionalization reactions, including C(sp3)H halogenation, C(sp3)H hydroxylation, C(sp3)O macrocyclization, and ...
Chen‐Yu Chiang, Masao Ohashi, Yi Tang
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Dichlorido[1-(1,10-phenanthrolin-2-yl)-2-pyridone]cadmium(II)
Acta Crystallographica Section E, 2008 In the title mononuclear complex, [CdCl2(C17H11N3O)], the CdII ion assumes a distorted trigonal–bipyramidal coordination geometry. The pyridone plane is twisted out of the 1,10-phenanthroline mean plane by 43.8 (3)°.
Jin-Min Li
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Avoiding pitfalls when modelling ligands in macromolecular crystallography
Acta Crystallographica Section D, EarlyView.Flawed protein–ligand X‐ray structures can misdirect drug discovery based on PDB‐deposited models. This review uses publicly available PDB examples to highlight potential pitfalls, from absent ligands to incorrect chemistry, and presents a practical validation approach to improve model reliability.The determination of protein–ligand complex structures ...
Oliver S. Smart +4 more
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Dichlorido[1-(1,10-phenanthrolin-2-yl)-2-pyridone]copper(II)
Acta Crystallographica Section E, 2008 In the title mononuclear complex, [CuCl2(C17H11N3O)], the CuII ion is in a distorted square-pyramidal coordination environment. The crystal structure is stabilized by various π–π stacking interactions in which the benzene ring, a pyridine
Jin Min Li
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Marine Drugs, 2023 Four new compounds, including two ascochlorin-type meroterpenoids acremocholrins A (1) and B (2), one pyridone alkaloid acremopyridone A (7), and one cyclopentenone derivative acremoketene A (12), together with eight known compounds (3–6 and 8–11), were ...
Yan Zhang +7 more
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Photochemistry of Aromatic N‐Oxides in Water Probed by Time‐Resolved X‐ray Absorption Spectroscopy
Chemistry – A European Journal, Volume 32, Issue 29, 7 August 2026.Time‐resolved XAS at the nitrogen and oxygen K‐edges is applied to the photorearrangement of two N‐oxides in water. Pyridine N‐oxide rapidly forms the oxaziridine isomer. Pyridazine N‐oxide undergoes ring opening to the diazo compound, without any evidence of intermediates.
Maximilian Paradiz Domínguez +3 more
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Advanced Synthesis &Catalysis, Volume 368, Issue 15, 1 August 2026.An “on‐water” scalable Pd‐catalyzed heteroannulation delivers benzofurans and furopyridines at ultralow catalyst loadings (down to 0.005 mol%), providing products essentially free of palladium residues. In addition to a broad substrate scope (aryl, alkenyl, and alkyl alkynes with o‐iodophenols or 2‐iodo‐3‐hydroxypyridines), this protocol enables a new ...
Iratxe Astarloa +3 more
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An overview of synthesis and biological activities of 2-pyridone derivatives over the last decade
Discover Applied Sciences2-Pyridone frameworks are a pervasive member of the N-heterocyclic family of both chemical and therapeutic interest. 2-Pyridones and their bridged analogues have wide occurrences in nature and the presence of both aromatic and amide groups in the ...
Lopamudra Das, Tista Sengupta
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Synthesis of Some New Enaminoketones, Analogous of Milrinone, 4,Pyrones and Related 4-Pyridones [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 1996 Synthesis of 4-(N,N- dimethylamino)-3-aryl-3-butene-2-one, ethyl-5-aryl-4-oxo-4H-pyran-2-carboxylate, ethyl-5-aryl-4-pyridones-2-carboxylate and 5-aryl-3-cyano-5-methyl-2-pyridones (aryl=3-thienyl, 2-furyl) are described.
Aziz Shahrisa, Salar Hemmati
doaj
Unlocking Stereodefined Olefins by Z‐Selective Transition Metals‐catalyzed C−H Activations
ChemCatChem, Volume 18, Issue 15, 14 August 2026.The synthesis of Z‐olefins is an important challenge in synthetic organic chemistry. Within this review, we report a comprehensive overview of transition metals‐catalyzed Z‐selective C–H activations of (hetero)arenes for the synthesis of stereodefined olefins.
Francesco Capranica +2 more
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