Results 41 to 50 of about 1,179 (184)

7-Iodo-1H-indole-2,3-dione

open access: yesIUCrData, 2016
The title compound, C8H4INO2, has a single planar molecule in the asymmetric unit, with the non-H atoms possessing a mean deviation from planarity of 0.058 Å. The molecules dimerize in the solid state through N—H...O hydrogen bonds.
James A. Golen, David R. Manke
doaj   +1 more source

Exploring Disulfide Bridge as a Tool to Improve Pioglitazone’s Neuroprotective Potential: Toward the Development of Prolonged‐Acting MAO‐B/PPARγ Modulators

open access: yesChemMedChem, Volume 21, Issue 15, 14 August 2026.
Pioglitazone is an antidiabetic drug acting as a peroxisome proliferator‐activated receptor γ (PPARγ) agonist and later repositioned as a monoamine oxidase B (MAO‐B) inhibitor. Despite promising preclinical premises, it showed a lack of efficacy in clinical trials as a treatment for neurodegenerative diseases.
Filippo Basagni   +12 more
wiley   +1 more source

6-Iodo-1H-indole-2,3-dione

open access: yesIUCrData, 2016
The molecule of the title compound, C8H4INO2, is almost planar, having an r.m.s. deviation from planarity of 0.019 Å for all non-H atoms. In the crystal, molecules are linked by pairs of N—H...O hydrogen bonds, forming inversion dimers with an R22(8 ...
James A. Golen, David R. Manke
doaj   +1 more source

Was ist Isatin?? [PDF]

open access: yesJournal für Praktische Chemie, 1883
n ...
openaire   +1 more source

Flipping the Card With Enantiodivergent Organocatalysis

open access: yesChemistry – A European Journal, Volume 32, Issue 29, 7 August 2026.
This minireview elaborates on recent organocatalytic strategies for achieving enantiodivergence—the ability to access both product enantiomers using a single chiral catalyst. It highlights how achiral stimuli, such as solvent polarity and chemical additives, along with minimal catalyst modifications, trigger stereochemical inversions in reactions ...
Debora Iapadre   +3 more
wiley   +1 more source

Barbituric Acids as Nucleophiles in Enantioselective Mannich Reactions: Organocatalytic Access to Quaternary Aminopyrazolone–Barbiturate Adducts

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 15, 1 August 2026.
An enantioselective Mannich reaction using barbituric acids as nucleophiles provides access to chiral heterocycles bearing quaternary stereocenters. The transformation is catalyzed by a bifunctional thiourea with high selectivity. An immobilized catalyst enables recycling and application under continuous‐flow conditions, offering an efficient and ...
Rodrigo Sánchez‐Molpeceres   +4 more
wiley   +1 more source

THE SYNTHESIS OF NEW SPIROLACTONES FROM SUBSTITUTED ISATINS [PDF]

open access: yesChemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2015
Interaction of N-ethyl isatin 3 with dimethyl acetylenedicarboxylate in the presence triphenylphosphine has led to good selectivity of methyl 1'-ethyl-4-methoxy-2',5-dioxo-5H-spiro[furan-2,3'-indoline]-3-carboxylate 4 formation.
Natalia Sucman   +5 more
doaj  

Design, Synthesis, X‐Ray Crystallographic Characterization, Anticholinesterase and Antioxidant Evaluation, and Molecular Modeling of Novel Dispiroindene‐Pyrrolidine Derivatives as Multifunctional Anti‐Alzheimer Agents

open access: yesDrug Development Research, Volume 87, Issue 5, August 2026.
ABSTRACT A novel series of 5‐chloro‐N‐alkyl‐1′,1″‐dimethyl‐4′‐aryldispiro[indene‐2,3′‐pyrrolidine‐2′,3″‐indoline]−1,2″(3H)‐diones (4a–r) was rationally designed and synthesized via a one‐pot multicomponent reaction of N‐alkylated 5‐chloroisatin derivatives, 2‐(arylmethylidene)−2,3‐dihydro‐1H‐inden‐1‐ones (2a–i), and sarcosine (3).
Aisha A. Alsfouk   +7 more
wiley   +1 more source

5,7-Dimethyl-1H-indole-2,3-dione

open access: yesIUCrData, 2017
The title compound, C10H9NO2, crystallizes with four molecules in the asymmetric unit. The molecules are all near planar, with the non-H atoms possessing mean deviations from planarity of 0.017, 0.026, 0.020 and 0.007 Å.
Matthew F. Perez   +3 more
doaj   +1 more source

Metal‐Based Materials for Redox Modulation in Biomedicine

open access: yesRare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT Metal materials have become increasingly important in modulating biological redox networks for therapeutic and diagnostic purposes, owing to their distinctive electronic properties and adaptable reactivity. This review synthesizes recent developments across various metal‐based materials, including elemental metals, metal oxides, coordination ...
Yan Fan   +7 more
wiley   +1 more source

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