Results 51 to 60 of about 9,399 (254)

Antioxidant Activity and Oxidation Products of 1,2,3,4- Tetrahydroquinoxalines in Peroxyl Radical Scavenging Reactions, Part I [PDF]

, 2005
This paper studies the antioxidant activity of 1,2,3,4-tetrahydroquinolines, 3,4-dihydro-2H-benzo[1,4]thiazines and 1,2,3,4-tetrahydroquinoxalines in the inhibition of the peroxidation of tetralin induced by an azo initiator.
Nishiyama Tomohiro, Oka Ryohei, Sakaguchi Tomoki, Sakata Toshifumi, Takahashi Masamitsu, Tanaka Daisuke   +5 more
core   +1 more source

Visible‐Light Photocatalyzed Selective Synthesis of 1,2‐ or 1,3‐Dithianes From Thietanes: An Experimental and Theoretical Study

Advanced Synthesis &Catalysis, Volume 367, Issue 24, December 22, 2025.
Although this article formally presents a regioselective photochemical ring enlargement of thietanes into 1,2‐ or 1,3‐dithianes, time‐dependent density functional theory calculations have revealed that 1,3‐dithianes are in fact formed thought photoinduced hydrogen atom transfers from 1,2‐dithianes initially resulting from the ring enlargement using ...
Gabriel Cormier, Manuel Pedrón, Maria I. Lapuh, Regis Guillot, Ilaria Ciofini, Thomas Boddaert   +5 more
wiley   +1 more source

2-[(2Z)-2-Benzylidene-3-oxo-3,4-dihydro-2H-1,4-benzothiazin-4-yl]acetic acid

IUCrData, 2016
In the title compound, C17H13NO3S, the thiazine ring displays a screw-boat conformation. The dihedral angle between the terminal benzene ring and the mean plane of the 1,4-benzothiazine fused-ring system is 51.52 (6)°.
Nada Kheira Sebbar, Mohamed Ellouz, Joel T. Mague, Younes Ouzidan, El Mokhtar Essassi, Hafid Zouihri   +5 more
doaj   +1 more source

A Miniaturized Optical Bioassay Towards Early‐Stage Diagnosis of Cancer Using Immunosensing of Biomarkers (CA 15.3, PSA and CEA) by Toluidine Blue‐Decorated Poly(Methyl Methacrylate): Proof of Concept

Analytical Science Advances, Volume 6, Issue 2, December 2025.
ABSTRACT The current study evaluated the application of a novel and advanced photochemical biosensing platform for the detection of multiple biomarkers of prostate‐specific antigen (PSA), carcinoembryonic antigen (CEA) and cancer antigen 15–3 (CA 15.3) in human plasma samples using optical biomedical analysis.
Seyyed Mohammad Yaghoubi, Hamed Bahari, Mohammad Hasanzadeh, Nasrin Shadjou   +3 more
wiley   +1 more source

2-(3-Oxo-3,4-dihydro-2H-1,4-benzothiazin-4-yl)acetohydrazide

Acta Crystallographica Section E, 2010
In the title compound, C10H11N3O2S, the thiazine ring exists in a conformation intermediate between twist-boat and half-chair. The dihedral angle between the mean plane of the thiazine ring and the hydrazide group is 89.45 (13)°.
Azher Saeed, Zaid Mahmood, Shiyao Yang, Saeed Ahmad, Muhammad Salim   +4 more
doaj   +1 more source

Synthesis of Pyrrolidine-Fused 1,3-Dithiolane Oligomers by the Cycloaddition of Polycyclic Dithiolethiones to Maleimides and Evaluation as Mercury(II) Indicators [PDF]

, 2014
The scandium triflate-catalyzed cycloaddition reaction of polycyclic 1,2-dithiolethiones to maleimides is described. The reaction constitutes an easy approach to linear as well as branched oligomeric cis-fused dihydro[1,3]dithiolo[4,5-c]pyrrole-4,6 ...
Cuevas Vicario, José Vicente, Díaz de Greñu Puertas, Borja, Fuertes Lázaro, Pedro, García Valverde, María, Rodríguez Rodríguez, Mª Teresa, Rojo Cámara, Mª Josefa, Torroba Pérez, Tomás   +6 more
core   +1 more source

High‐Throughput Photocatalysis for Generating Reliable Datasets Analyzed by Machine Learning

ChemPhysChem, Volume 26, Issue 23, November 28, 2025.
Photocatalytic materials are typically tested on limited analytes, limiting real‐world relevance. High throughput‐photocatalysis, enabling rapid, modular experimentation across 27 analytes is introduced. Using P25 TiO2, dye removal datasets with machine learning is paired.
Mark Croxall, Reece Lawrence, Jiaqi Gong, M. Cynthia Goh   +3 more
wiley   +1 more source

(Z)-(1,3-Thiazinan-2-ylideneamino)formonitrile

Acta Crystallographica Section E, 2009
In the title molecule, C5H7N3S, the thiazine ring shows a conformation close to a half-boat. The Cremer & Pople puckering parameters of the thiazine ring are q2 = 0.4645 (2) Å, θ = 132.4 (3) and ...
Yu-wen Peng, Lin-hai Wu
doaj   +1 more source

Davis-Beirut reaction: route to thiazolo-, thiazino-, and thiazepino-2H-indazoles. [PDF]

, 2014
Methods for the construction of thiazolo-, thiazino-, and thiazepino-2H-indazoles from o-nitrobenzaldehydes or o-nitrobenzyl bromides and S-trityl-protected 1°-aminothioalkanes are reported.
Farber, Kelli M, Haddadin, Makhluf J, Kurth, Mark J   +2 more
core   +2 more sources

In‐Silico Exploration of the StreptomeDB Database for Potential Irreversible DprE1 Inhibitors toward Antitubercular Treatment

ChemistryOpen, Volume 14, Issue 11, November 2025.
StreptomeDB‐derived nitro compounds are screened against Mycobacterium tuberculosis decaprenylphosphoryl‐D‐riboseoxidase (DprE1) . Covalent docking, molecular dynamics simulations, and molecularmechanics/generalized Born surface area analyses identify hydroxythaxtomin and lajollamycin B as potent DprE1 inhibitors, surpassing the reference PBTZ169 in ...
Doaa G. M. Mahmoud, Gamal A. H. Mekhemer, Mohamed‐Elamir F. Hegazy, Jabir H. Al‐Fahemi, Mahmoud A. A. Ibrahim   +4 more
wiley   +1 more source