Results 61 to 70 of about 8,948 (229)

Identification of a novel 1,2 oxazine that can induce apoptosis by targeting NF-κB in hepatocellular carcinoma cells

Biotechnology Reports, 2020
Constitutive activation of NF-κB is associated with proinflammatory diseases and suppression of the NF-κB signaling pathway has been considered as an effective therapeutic strategy in the treatment of various cancers including hepatocellular carcinoma ...
Chaithanya Somu, Chakrabhavi Dhananjaya Mohan, Sachin Ambekar, Dukanya, Shobith Rangappa, CP Baburajeev, Alexey Sukhorukov, Srishti Mishra, Muthu K Shanmugam, Arunachalam Chinnathambi, Tahani Awad Alahmadi, Sulaiman Ali Alharbi, Basappa, Kanchugarakoppal S. Rangappa   +13 more
doaj   +1 more source

Monosubstituted N‐Arylhydroxylamine Chemistry: Integrating Contemporary Synthetic Approaches for the Efficient Construction of Diverse Heterocyclic Scaffolds

Chemistry – A European Journal, Volume 32, Issue 26, 11 July 2026.
Monosubstituted N‐arylhydroxylamines represent a unique subclass of hydroxylamines that act as pivotal intermediates in redox transformations and as versatile platforms for further synthetic transformations. They serve as key building blocks in the synthesis of architecturally complex heterocycles and other valuable organic compounds.
Michael G. Kallitsakis, Kyriakos D. Nikopoulos, Ioannis N. Lykakis   +2 more
wiley   +1 more source

A Non‐Antigenic Randomized Polyethylene Glycol/Poly(2‐Phenyl‐2‐Oxazine)‐Based Drug Delivery Platform

Macromolecular Rapid Communications, Volume 47, Issue 14, 20 July 2026.
Randomized PEG (rPEG), a conceptually new PEG alternative, is combined with poly(2‐phenyl‐2‐oxazine) (PPheOzi) to establish an rPEG‐b‐PPheOzi‐b‐rPEG micellar drug delivery platform. The PPheOzi block enables high drug loadings, while competitive ELISA reveals a drastic reduction in anti‐PEG antibody affinity of rPEG in comparison to PEG.
Julian Schmidt, Anna‐Lena Ziegler, Florian T. Kaps, Laura J. Rosenberger, Matthias Bros, Holger Frey, Robert Luxenhofer   +6 more
wiley   +1 more source

Microwave-Assisted Synthesis of 2-Aryl-2-oxazolines, 5,6-Dihydro-4H-1,3-oxazines, and 4,5,6,7-Tetrahydro-1,3-oxazepines.

Organic Letters, 2016
The first general procedure for the synthesis of 5- to 7-membered cyclic iminoethers by microwave-assisted cyclization of ω-amido alcohols promoted by polyphosphoric acid (PPA) esters is presented. 2-Aryl-2-oxazolines and 5,6-dihydro-4H-1,3-oxazines were
María C Mollo, L. Orelli
semanticscholar   +1 more source

Iodination of carbohydrate-derived 1,2-oxazines to enantiopure 5-iodo-3,6-dihydro-2H-1,2-oxazines and subsequent palladium-catalyzed cross-coupling reactions

Beilstein Journal of Organic Chemistry, 2016
Iodination of carbohydrate-derived 3,6-dihydro-2H-1,2-oxazines of type 3 using iodine and pyridine in DMF furnished 5-iodo-substituted 1,2-oxazine derivatives 4 with high efficacy. The alkenyl iodide moiety of 1,2-oxazine derivatives syn-4 and anti-4 was
Michal Medvecký, Igor Linder, Luise Schefzig, Hans-Ulrich Reissig, Reinhold Zimmer   +4 more
doaj   +1 more source

Synthesis, Characterization, Molecular Docking Study and Biological Evaluation of Novel 1,3,4‐Thiadiazole‐Based Heterocycles as Potential Anticancer and Antioxidant Agents

Chemical Biology &Drug Design, Volume 108, Issue 1, July 2026.
A new cyanoacetohydrazide derivative was developed as a key intermediate to synthesize diverse 1,3,4‐thiadiazole‐based heterocyclic compounds. The synthesized compounds were structurally confirmed. Several compounds demonstrated strong cytotoxic activity against HePG‐2 and MCF‐7 cancer cell lines, with compounds 17, 18, and 13 exceeding the activity of
Nashwa M. El‐Metwaly, Abdulmajeed F. Alrefaei, Hossa F. Alshareef, Samar J. Almehmadi, Fatimah A. Alotaibi, Nadiyah M. Alshammari, Manal S. Ebaid, Hanadi A. Katouah   +7 more
wiley   +1 more source

A Constellation of Fluorescent Biosensors to Illuminate the Galaxy of Protein Kinases

ChemBioChem, Volume 27, Issue 11, 15 June 2026.
Protein kinases (PKs) are enzymes that catalyze phosphorylation of protein substrates involved in a wide variety of biological signalling pathways. This review describes the different families and mechanisms of action and regulation of protein kinases, together with the different classes of fluorescent biosensors that have been engineered and ...
Timothe Abbura, May C. Morris
wiley   +1 more source

Electrophilic Iodination of Heterocyclic Compounds. Recent Advances 2008–2025: Part II

European Journal of Organic Chemistry, Volume 29, Issue 22, 9 June 2026.
Electrophilic iodination using molecular iodine and iodide sources represents an efficient approach for accessing valuable iodinated organic compounds. This review highlights recent advances in the iodination of heterocyclic compounds from 2008 to 2025, emphasizing the role of heteroaryl iodides as important synthetic intermediates for biologically ...
Njomza Ajvazi, Stojan Stavber
wiley   +1 more source

Synthesis of Substituted Pyrido-oxazine through Tandem SN2 and SNAr Reaction

SynOpen, 2018
Pyrido-oxazine derivatives have been synthesized by employing tandem SN2 and SNAr reaction between 2,4,6-tribromo-3-(2-bromoethoxy)pyridine or 2,4,6-tribromo-3-(3-bromopropoxy)pyridine and a variety of primary amines. Moderate to good regioselectivity in
Mosim Amin Pathan, Faiz Ahmed Khan
doaj   +1 more source

The Development and Characterization of a Panel of Amine Dehydrogenases (AmDHs) and Amino Acid Dehydrogenases (AADHs)

ChemCatChem, Volume 18, Issue 11, 15 June 2026.
The CoE‐AmDH panel enables sustainable access to chiral amines using diverse amine (AmDH) and amino acid dehydrogenases (AADH). Utilizing formate (FDH) or glucose dehydrogenase (GDH) for cofactor regeneration, this study establishes a robust screening platform for mild reductive aminations.
R. Tilly Bradshaw Allen, William R. Birmingham, Nicholas John Turner   +2 more
wiley   +1 more source