Results 41 to 50 of about 660,493 (200)

Effect of Structure on Charge Distribution in the Isatin Anions in Aprotic Environment: Spectral Study

Molecules, 2017
Five isatin anions were prepared by deprotonation of initial isatins in aprotic solvents using basic fluoride and acetate anions (F− and CH3COO−). The F− basicity is sufficient to deprotonate isatin NH hydrogen from all the studied compounds.
Pavol Tisovský, Róbert Šandrik, Miroslav Horváth, Jana Donovalová, Klaudia Jakusová, Marek Cigáň, Róbert Sokolík, Anton Gáplovský, Martin Gáplovský, Juraj Filo   +9 more
doaj   +1 more source

Carboxylate–Probase Catalyzed Favorskii Reaction

Chemistry – A European Journal, EarlyView.
Stronger together: A combination of a carboxylate catalyst and a silylating agent generates a stronger base catalyst for a metal‐free catalytic addition of alkynes to aldehydes and ketones under chemoselective, O‐silylative conditions. The reaction is proposed to proceed via quaternary ammonium (Q+) cation – acetylide anion ion pairs, with chiral ...
Anton Bannykh, Sanna M. Stenfors, Anton Nechaev, John M. Fiskari, Petri M. Pihko   +4 more
wiley   +1 more source

Synthesis, Cytotoxicity, and Apoptosis‐Associated Cell Death Activity of an Isatin‐Containing Pyrimidine‐Derived Cu(II) Complex

Journal of Applied Toxicology, EarlyView.
ABSTRACT A Cu(II) complex derived from a pyrimidine with the isatin group was synthesized and tested for its cytotoxic effects on A549 lung cancer and MCF‐7 breast cancer cell lines, as well as its effects on apoptosis‐associated cell death and cell cycle regulation in A549 cells. To evaluate cytotoxicity, MTT assays were performed at 24, 48, and 72 h,
Müjgan Kesik Oktay, Cansu Topkaya, Elif Kağa, Yasin Eren, Ramazan Güp   +4 more
wiley   +1 more source

Synthesis and Supramolecular Organization of 5-(4-Alkylphenyl)isatin

, 2016
The synthesis of a homologous series of 5-(4-alkylphenyl)isatin derivatives, as well as the crystal structure and DFT studies of the respective hexyl derivative are presented, constituting the first examples of a new family of supramolecular bilayer ...
Dirk Blunk (2179042), Jan H. Porada (2179044), Jörg Neudörfl (2179046)   +2 more
core   +2 more sources

Synthesis of 4-Amino-4,5-dihydro-1H-1,2,4-triazole-5-ones and their Isatin-3-imine Derivatives

Molecules, 2005
Iminoester hydrochlorides 1 have been synthesized. These compounds werethen converted into ester ethoxycarbonyl hydrazones 2, from which in turn a new seriesof substituted 4-amino-4,5-dihydro-1H-1,2,4-triazole-5-ones, 3, was then prepared.Finally a set ...
Bahittin Kahveci
doaj   +1 more source

Green one-pot, four-component synthesis of spiro[indoline-3,4′-pyrano[2,3-c]pyrazole] derivatives using amino-functionalized nanoporous silica SBA-15 under solvent-free conditions [PDF]

Journal of the Serbian Chemical Society, 2015
Propylamine functionalized nanoporous silica (SBA-Pr-NH2) has been used as an efficient heterogeneous solid basic nanoreactor in the synthesis of 6'-amino-1'H-spiro[indoline-3,4'-pyrano[2,3-c]pyrazol]-2-one derivatives 5 through one-pot, four ...
Ziarani Ghodsi Mohammadi, Rahimifard Mahshid, Nouri Fatemeh, Badiei Alireza   +3 more
doaj   +1 more source

Synthesis, Cytotoxic Activity, mRNA Expression, Total Oxidant and Antioxidant Status, and Molecular Modeling Studies of Novel Schiff Base–Thiosemicarbazone Hybrids

Journal of Biochemical and Molecular Toxicology, Volume 40, Issue 11, November 2026.
In this study, new Schiff base‐derived compounds were synthesized, and their structures were confirmed by FT‐IR, 1H‐NMR, 13C‐NMR, and HRMS analyses. The cytotoxic effects of the compounds on a prostate cancer cell line (PC3) were investigated, and it was determined that the compounds NZ10, NZ9, NZ7, and NZ4, in particular, exhibited potent anticancer ...
Anber M Anber, Mehmet Özbay, İlhan Özer İlhan, Hüseyin Kekeçmuhammed, Rıfat Emin Bora, Emin Saripinar, Yalçın Erzurumlu, Muhammed Tilahun Muhammed, Sadeq K. Alhag, Lamya Ahmed Alkeridis, Senem Akkoc   +10 more
wiley   +1 more source

Iodine-catalyzed Synthesis, Antibacterial, and Antioxidant Activity of Isatin Derivatives

Indonesian Journal of Chemistry
Isatin is a unique compound with many bioactivities such as antiviral, anti-HIV, antitumor, anti-inflammatory, anticonvulsant, and antifungal. In this study, isatin derivatives were synthesized with an iodine catalyst and tested for antibacterial and ...
Antonius Herry Cahyana, Agus Rimus Liandi, Yosua Ongkowidjawa   +2 more
doaj   +1 more source

DABCO-Catalyzed Mono-/Diallylation of N-Unsubstituted Isatin N,N′-Cyclic Azomethine Imine 1,3-Dipoles with Morita-Baylis-Hillman Carbonates

Molecules, 2023
Allylation of N-unsubstituted isatin N,N′-cyclic azomethine imines with Morita-Baylis-Hillman carbonates in the presence of 1–10 mol% DABCO in DCM at room temperature, rapidly gave N-allylated and N, β-diallylated isatin N,N′-cyclic azomethine imine 1,3 ...
Qiumi Wang, Sicheng Li, Guosheng Yang, Xinyu Zou, Xi Yin, Juhua Feng, Huabao Chen, Chunping Yang, Li Zhang, Cuifen Lu, Guizhou Yue   +10 more
doaj   +1 more source

4‐Thiazolidinone/2,4‐Thiazolidinedione–Sulfonamide Hybrids: A Concise Review of Their Design and Pharmacological Significance

ChemMedChem, Volume 21, Issue 20, 28 October 2026.
Sulfonamide–thiazolidinone hybrids integrate complementary pharmacophores to generate multifunctional scaffolds with broad pharmacological potential. Their structural versatility supports antimicrobial, antifungal, antioxidant, anticancer, anti‐inflammatory, antidiabetic, anticonvulsant, and enzyme‐inhibitory activities.
Subham Kumar Vishwakarma, Andressa Francielli Bonjorno, Sukhwant Singh, Christian S. Carnero Canales, Jean Leandro dos Santos, Cesar Augusto Roque‐Borda, Fernando Rogério Pavan   +6 more
wiley   +1 more source