Results 31 to 40 of about 2,257 (201)

Squaramides, Discovering a New Crucial Scaffold [PDF]

Synlett, 2013
Spotlight ...
openaire   +2 more sources

Switching-On Fluorescence by Copper (II) and Basic Anions: A Case Study with a Pyrene-Functionalized Squaramide

Molecules, 2021
The new symmetric acyclic N,N’-bis(1-pyrenyl) squaramide (H2L) functionalized with the pyrene moiety as a fluorogenic fragment has been designed and its ability to selectively detect specific anions and metals investigated. H2L selectively binds Cl− both
Giacomo Picci, Jessica Milia, Maria Carla Aragoni, Massimiliano Arca, Simon J. Coles, Alessandra Garau, Vito Lippolis, Riccardo Montis, James B. Orton, Claudia Caltagirone   +9 more
doaj   +1 more source

Chiral Bifunctional Amine-Squaramide-Catalyzed Highly Diastereo- and Enantioselective Michael/Aldol Cascade Reaction of 2‑Mercaptobenzaldehyde and α,β-Unsaturated 7‑Azaindoline Amides

, 2019
A highly diastereo- and enantioselective Michael/aldol cascade reaction of 2-mercaptobenzaldehyde and α,β-unsaturated 7-azaindoline amides has been developed.
Xiao-Ying Xu, Xiao-Ying Xu (1457104), Yong You, Yong You (28100), Yan-Ping Zhang, Xiao-Mei Zhang (196411), Xiao-Mei Zhang, Wei-Cheng Yuan (1457101), Wei-Cheng Yuan, Jian-Qiang Zhao (706458), Jian-Qiang Zhao, Yan-Ping Zhang (432349)   +11 more
core   +2 more sources

Experimental and Theoretical Studies in Hydrogen-Bonding Organocatalysis

Molecules, 2015
Chiral thioureas and squaramides are among the most prominent hydrogen-bond bifunctional organocatalysts now extensively used for various transformations, including aldol, Michael, Mannich and Diels-Alder reactions. More importantly, the experimental and
Matej Žabka, Radovan Šebesta
doaj   +1 more source

Squaramide‐Based Supramolecular Materials Drive HepG2 Spheroid Differentiation [PDF]

, 2021
A major challenge in the use of HepG2 cell culture models for drug toxicity screening is their lack of maturity in 2D culture. 3D culture in Matrigel promotes the formation of spheroids that express liver-relevant markers, yet they still lack various ...
Water, B. van de, Bas ter Braak, Doris Heinrich, Joeri A. J. Wondergem, Wondergem, J.A.J., Markus C. Kwakernaak, Tingxian Liu, Bob van de Water, Liu, T., Linda van den Berk, Braak, B. ter, Roxanne E. Kieltyka, Heinrich, D., Berk, L. van den, Tong, C., Kieltyka, R.E., Kwakernaak, M.C., Ciqing Tong, Braak, B.T.   +18 more
core   +2 more sources

Fatty Acid-Activated Proton Transport by Bisaryl Anion Transporters Depolarises Mitochondria and Reduces the Viability of MDA-MB-231 Breast Cancer Cells

Biomolecules, 2023
In respiring mitochondria, the proton gradient across the inner mitochondrial membrane is used to drive ATP production. Mitochondrial uncouplers, which are typically weak acid protonophores, can disrupt this process to induce mitochondrial dysfunction ...
Edward York, Daniel A. McNaughton, Meryem-Nur Duman, Philip A. Gale, Tristan Rawling   +4 more
doaj   +1 more source

Enantioselective addition of diphenyl phosphonate to ketimines derived from isatins catalyzed by binaphthyl-modified organocatalysts

Beilstein Journal of Organic Chemistry, 2016
Chiral binaphthyl-modified squaramide-catalyzed enantioselective addition of diphenyl phosphonate to ketimines derived from isatins has been achieved. This method affords practical and efficient access to chiral 3-amino-3-phosphonyl-substituted oxindole ...
Hee Seung Jang, Yubin Kim, Dae Young Kim
doaj   +1 more source

Asymmetric Dearomative (3+2)-Cycloaddition Involving Nitro-Substituted Benzoheteroarenes under H-Bonding Catalysis

Molecules, 2021
In our studies, the organocatalytic 1,3-dipolar cycloaddition between 2-nitrobenzofurans or 2-nitrobenzothiophene and N-2,2,2-trifluoroethyl-substituted isatin imines has been developed.
Maciej Saktura, Anna Skrzyńska, Sebastian Frankowski, Sylwia Wódka, Łukasz Albrecht   +4 more
doaj   +1 more source

Organocatalytic Enantioselective Addition of Malonates to Cyclic Imines: A Short Total Synthesis of Tetraponerine T‐1

Angewandte Chemie, Volume 138, Issue 38, 14 September 2026.
A stereoselective functionalization method of cyclic imines under mild organocatalytic conditions was developed. Bifunctional cinchona alkaloid catalysts combined with carefully optimized reaction conditions to suppress background reactivity enabled highly enantio‐ and diastereoselective addition reactions of malonates to cyclic imines.
Frederic Kölblin, Helma Wennemers
wiley   +2 more sources

Chiral Squaramide Derivatives are Excellent Hydrogen Bond Donor Catalysts

, 2016
Chiral Squaramide Derivatives are Excellent Hydrogen Bond Donor ...
Koji Hagihara (2411386), Jeremiah P. Malerich (2300824), Viresh H. Rawal (1323897)   +2 more
core   +2 more sources