Results 1 to 10 of about 36,445 (329)

Revisiting the Rearrangement of Dewar Thiophenes [PDF]

Molecules, 2020
The mechanism for the walk rearrangement in Dewar thiophenes has been clarified theoretically by studying the evolution of chemical bonds along the intrinsic reaction coordinates.
Sara Gómez, Edison Osorio, Eugenia Dzib, Rafael Islas, Albeiro Restrepo, Gabriel Merino   +5 more
doaj   +6 more sources

The Ethnopharmacological Uses, Metabolite Diversity, and Bioactivity of Rhaponticum uniflorum (Leuzea uniflora): A Comprehensive Review

Biomolecules, 2022
Rhaponticum uniflorum (L.) DC. (syn. Leuzea uniflora (L.) Holub) is a plant species of the Compositae (Asteraceae) family that is widely used in Asian traditional medicines in China, Siberia, and Mongolia as an anti-inflammatory and stimulant remedy ...
Daniil N. Olennikov
doaj   +1 more source

Iridium-Catalyzed Silylation of Five-Membered Heteroarenes: High Sterically Derived Selectivity from a Pyridyl-Imidazoline Ligand. [PDF]

, 2020
The steric effects of substituents on five-membered rings are less pronounced than those on six-membered rings because of the difference in bond angles. Thus, the regioselectivities of reactions of five-membered heteroarenes that occur with selectivities
Hartwig, John F, Karmel, Caleb, Kharitonova, Elena V, Rubel, Camille Z   +3 more
core   +1 more source

COMPUTER SIMULATION OF π – π INTERACTIONS OF TETRATHIOPHENE MOLECULES

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2021
The properties of the supramolecular organization of conjugated polymers strongly affect the mobility of charge carriers and, consequently, the properties of produced electronic devices based on them.
V.G. Alekseev, P.O. Baburkin, S.-H. Tung, P.V. Komarov   +3 more
doaj   +1 more source

Flavouring Group Evaluation 76 Revision 2 (FGE.76Rev2): Consideration of sulfur‐containing heterocyclic compounds, evaluated by JECFA, structurally related to thiazoles, thiophenes, thiazoline and thienyl derivatives from chemical group 29 and miscellaneous substances from chemical group 30 evaluated by EFSA in FGE.21Rev5

EFSA Journal, 2023
The Panel on Food Additives and Flavourings (FAF) was requested to consider the JECFA evaluations of 28 flavouring substances in the Flavouring Group Evaluation 76 (FGE.76Rev2). Twenty‐one of these substances have been considered in FGE.76Rev1.
EFSA Panel on Food Additives and Flavourings (FAF), Maged Younes, Gabriele Aquilina, Laurence Castle, Gisela Degen, Karl‐Heinz Engel, Paul J Fowler, Maria Jose Frutos Fernandez, Peter Fürst, Ursula Gundert‐Remy, Rainer Gürtler, Trine Husøy, Melania Manco, Peter Moldeus, Sabina Passamonti, Romina Shah, Ine Waalkens‐Berendsen, Matthew Wright, Romualdo Benigni, Claudia Bolognesi, Kevin Chipman, Eugenia Cordelli, Karin Nørby, Camilla Svendsen, Maria Carfí, Giorgia Vianello, Wim Mennes   +26 more
doaj   +1 more source

Synthesis, Molecular Docking Study, and Cytotoxic Activity against MCF Cells of New Thiazole–Thiophene Scaffolds

Molecules, 2022
Investigating novel compounds that may be useful in designing new, less toxic, selective, and potent breast anticancer agents is still the main challenge for medicinal chemists.
Sobhi M. Gomha, Sayed M. Riyadh, Bader Huwaimel, Mohie E. M. Zayed, Magda H. Abdellattif   +4 more
doaj   +1 more source

Thiophenes—Naturally Occurring Plant Metabolites: Biological Activities and In Silico Evaluation of Their Potential as Cathepsin D Inhibitors

Plants, 2022
Naturally, thiophenes represent a small family of natural metabolites featured by one to five thiophene rings. Numerous plant species belonging to the family Asteraceae commonly produce thiophenes.
Sabrin R. M. Ibrahim, Abdelsattar M. Omar, Alaa A. Bagalagel, Reem M. Diri, Ahmad O. Noor, Diena M. Almasri, Shaimaa G. A. Mohamed, Gamal A. Mohamed   +7 more
doaj   +1 more source

Electronic Correlations in Oligo-acene and -thiophene Organic Molecular Crystals [PDF]

, 2004
From first principles calculations we determine the Coulomb interaction between two holes on oligo-acene and -thiophene molecules in a crystal, as a function of the oligomer length.
Alberto F. Morpurgo, E. A. Silinsh, Geert Brocks, J. van den Brink, Jeroen van den Brink, M. J.  S. Dewar, R. W. G. Wyckoff   +6 more
core   +5 more sources

Thiophene S‐Oxides

ChemInform, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
Krishna Gopal Dongol, Thies Thiemann
openaire   +5 more sources

Palladium-Catalyzed Direct (Het)arylation Reactions of Benzo[1,2-d:4,5-d′]bis([1,2,3]thiadiazole and 4,8-Dibromobenzo[1,2-d:4,5-d′]bis([1,2,3]thiadiazole)

Molecules, 2023
Palladium-catalyzed direct (het)arylation reactions of strongly electron-withdrawing tricyclic benzo[1,2-d:4,5-d′]bis([1,2,3]thiadiazole) and its 4,8-dibromo derivative were studied; the conditions for the selective formation of mono- and bis-aryl ...
Timofey N. Chmovzh, Timofey A. Kudryashev, Daria A. Alekhina, Oleg A. Rakitin   +3 more
doaj   +1 more source