Results 71 to 80 of about 27,016 (208)

Intramolecular Azide to Alkene Cycloadditions for the Construction of Pyrrolobenzodiazepines and Azetidino-Benzodiazepines [PDF]

, 2014
The coupling of proline- and azetidinone-substituted alkenes to 2-azidobenzoic and 2-azidobenzenesulfonic acid gives precursors that undergo intramolecular azide to alkene 1,3-dipolar cycloadditions to give imine-, triazoline- or aziridine-containing ...
Antonow, Broggini, Christopher Chambers, Faisal Jamshaid, Karl Hemming, Mitra, Patel, Paul O'Gorman, Rahman, Thurston   +9 more
core   +2 more sources

An acoustic study on monophthongs in Central Australian Aboriginal English

World Englishes, EarlyView.
Abstract We present an acoustic analysis of monophthongal vowel production in Central Australian Aboriginal English (CAAE), providing one of the first systematic examinations of this variety spoken by English‐as‐a‐first‐language (L1) speakers in Mparntwe/Alice Springs, Australia.
Yizhou Wang, Carmel O'Shannessy, Vanessa Davis, Rikke Bundgaard‐Nielsen, Denise Foster   +4 more
wiley   +1 more source

Cross-lingual RST Discourse Parsing [PDF]

, 2017
Discourse parsing is an integral part of understanding information flow and argumentative structure in documents. Most previous research has focused on inducing and evaluating models from the English RST Discourse Treebank.
Braud, Chloé, Coavoux, Maximin, Søgaard, Anders   +2 more
core   +3 more sources

Electronic Smoking Devices Among University Students: Usage Patterns and Chemical Composition of Inhaled Substances

Analytical Science Advances, Volume 7, Issue 1, June 2026.
ABSTRACT This study investigated the prevalence of electronic smoking device (ESD) use and its associated behavioural and chemical risks among university students in Bahia, Brazil. A cross‐sectional survey was conducted with 355 students from public and private institutions through an online questionnaire between April and May 2023. Among participants,
Eduard F. Valenzuela, Raffael Silva Santos Almeida, Ivana Ferreira Simões, Aline Gonçalves Miranda, Magno Oliveira Ramos, Roberto Rodrigues Bandeira Tosta Maciel, Fernanda Warken Rosa, Aníbal de Freitas Santos Júnior   +7 more
wiley   +1 more source

5′-Oxospiro-(fluorene-9,4′-imidazolidine)-2′-thione

Molbank
The structure verification of 5′-oxospiro-(fluorene-9,4′-imidazolidine)-2′-thione by NMR is reported. Toward this aim, 2D NMR techniques including 1H-1H COSY, HMQC, and HMBC experiments were used to assist with the assignment of the 1H and 13C chemical ...
Dimitar Stoitsov, Marin Marinov, Plamen Penchev, Petya Marinova, Neyko Stoyanov   +4 more
doaj   +1 more source

1-(4-Chlorophenyl)-3-(2,4-dichlorobenzoyl)thiourea [PDF]

, 2009
The title compound, C14H9Cl3N2OS, has bond lengths and angles which are quite typical for thiourea compounds of this class. The molecule exists in the solid state in its thione form with typical thiourea C=S and C=O bond lengths, as well as shortened C-N
M. Khawar Rauf, Michael Bolte, Amin Badshah, Allen, Baily, Blessing, Khawar Rauf, Khawar Rauf, Khawar Rauf, Khawar Rauf, Koch, Krishnamurthy, Maryanoff, Namgun, Patil, Sheldrick, Spek, Upadlgaya   +17 more
core   +1 more source

1-Methyl-3-phenylimidazolidine-2-thione [PDF]

Acta Crystallographica Section E Structure Reports Online, 2014
The asymmetric unit of the title cyclic thiourea derivative, C10H12N2S, comprises two molecules, each of which has a twist about the CH2—CH2bond within the five-membered ring. The major difference between the independent molecules is manifested in the relative orientations of the five- and six-membered rings [dihedral angles between the least-squares ...
Nabihah Al Muna Mohd Nor, Zanariah Abdullah, Seik Weng Ng, Edward R. T. Tiekink   +3 more
openaire   +3 more sources

Design, Synthesis, Cytotoxicity Assessment, and Molecular Docking of Novel Triazolopyrimidines as Potent Cyclin‐Dependent Kinase 4 Inhibitors

ChemistryOpen, Volume 15, Issue 4, April 2026.
A novel series of 1,5‐dihydro‐[1,2,4]triazolo[4,3‐a]pyrimidines (5a–g) is synthesized and evaluated as potential CDK4 inhibitors. Compounds 5c and 5d exhibit strong cytotoxicity toward HepG2 and MCF‐7 cells with IC50 ≈ 1–2 µM, comparable to doxorubicin.
Tariq Z. Abolibda, Sami A. Al‐Hussain, Basant Farag, Mohamed El‐Naggar, Magdi E. A. Zaki, Emad S. A. Alhazmi, Adel S. M. Almohammadi, Sobhi M. Gomha   +7 more
wiley   +1 more source

Synthesis and Biological Evaluation of Quinazoline-4-thiones

Molecules, 2003
Several 2,2-dimethyl-3-phenyl-1,2-dihydroquinazoline-4(3H)-thiones and 2-methyl-3-phenylquinazoline-4(3H)-thiones were synthesized and tested for their antimycobacterial, photosynthesis-inhibiting, and antialgal activity.
Jarmila Kaustová, MiloÅ¡ Macháček, Pia Vuorela, Luděk Jahodář, Jitka Vytlačilová, Vladimír Chobot, Katarína Kráľová, Martin Å ustr, Lenka Kubicová   +8 more
doaj   +1 more source

Glutathione treatment protects the rat liver against injury after warm ischemia and Kupffer cell activation [PDF]

, 2002
Background/Aim: The generation of reactive oxygen species by activated Kupffer cells (KC) may contribute to reperfusion injury of the liver during liver transplantation or resection.
Baron, A., Bilzer, M., Ebensberger, S., Gerbes, Alexander L., Schauer, R., Steib, C.   +5 more
core   +1 more source