Results 41 to 50 of about 2,492 (186)

Thermally Bistable Stiff Stilbene Photoswitches and Polymer Applications

The Chemical Record, EarlyView.
Thermally stable photoswitches offer new opportunities for controlling polymer structures and functions under nonequilibrium conditions. This Personal Account highlights stiff stilbene (SS) and sterically hindered stiff stilbene (HSS) photoswitches, which combine large structural changes with exceptional thermal bistability.
Keiichi Imato
wiley   +1 more source

Efficient synthesis of 1,3-naphtoxazine derivatives using reusable magnetic catalyst (GO-Fe3O4–Ti(IV)): anticonvulsant evaluation and computational studies

BMC Chemistry, 2022
A series of 2-aryl/alkyl-2,3-dihydro-1H-naphtho[1,2-e][1,3]oxazines (S 1 –S 11 ) were synthesized with an eco-friendly and recoverable nanocatalyst (GO-Fe3O4–Ti(IV)) as an efficient magnetic composite. The new nanocatalyst was characterized by FT-IR, XRD
Soghra Khabnadideh, Aida solhjoo, Reza Heidari, Leila Amiri Zirtol, Amirhossein Sakhteman, Zahra Rezaei, Elaheh Babaei, Samaneh Rahimi, Leila Emami   +8 more
doaj   +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

A Synthetic Approach to Pyrazolopyranopyrimidinones and Pyrazolopyranooxazinones as Antimicrobial Agents

Journal of Chemistry, 2016
The hitherto unknown 6-amino-4-(2-chloro-5-nitrophenyl)-3-methyl-1,4-dihydropyrano[2,3-c] pyrazole-5-carbonitrile 1a was synthesized. Both 1a and its 2,4 dichlorophenyl derivative 1b were utilized as building blocks for the preparation of novel class of ...
A. K. Elziaty, G. Bassioni, A. M. A. Hassan, H. A. Derbala, M. S. Abdel-Aziz   +4 more
doaj   +1 more source

Stereoselective Synthesis and Cytoselective Toxicity of Monoterpene-Fused 2-Imino-1,3-thiazines

Molecules, 2014
Starting from pinane-, apopinane- and carane-based 1,3-amino alcohols obtained from monoterpene-based β-amino acids, a library of monoterpene-fused 2-imino-1,3-thiazines as main products and 2-thioxo-1,3-oxazines as side-products were prepared via two ...
Zsolt Szakonyi, István Zupkó, Reijo Sillanpää, Ferenc Fülöp   +3 more
doaj   +1 more source

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

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

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

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

Predicting the UV–vis spectra of oxazine dyes [PDF]

Beilstein Journal of Organic Chemistry, 2011
In the current work we have investigated the ability of time-dependent density functional theory (TD-DFT) to predict the absorption spectra of a series of oxazine dyes and the effect of solvent on the accuracy of these predictions. Based on the results of this study, it is clear that for the series of oxazine dyes an accurate prediction of the ...
Fleming, Scott, Mills, Andrew, Tuttle, Tell   +2 more
openaire   +5 more sources