Results 41 to 50 of about 177,307 (324)

Diels–Alder reaction of β-fluoro-β-nitrostyrenes with cyclic dienes

Beilstein Journal of Organic Chemistry, 2021
The Diels–Alder reaction of β-fluoro-β-nitrostyrenes with cyclic 1,3-dienes was investigated. A series of novel monofluorinated norbornenes was prepared in up to 97% yield.
Savva A. Ponomarev, Roman V. Larkovich, Alexander S. Aldoshin, Andrey A. Tabolin, Sema L. Ioffe, Jonathan Groß, Till Opatz, Valentine G. Nenajdenko   +7 more
doaj   +1 more source

Teaching Stereochemistry with Multimedia and Hands-On Models: The Relationship between Students’ Scientific Reasoning Skills and The Effectiveness of Model Type

Center for Educational Policy Studies Journal
This paper presents an analysis of the use of multimedia and hands-on models on university students’ understanding of stereochemistry. The relationship between students’ scientific reasoning skills and their understanding of stereochemistry was also ...
Rooserina Kusumaningdyah, Iztok Devetak, Yudhi Utomo, Effendy Effendy, Daratu Putri, Habiddin Habiddin   +5 more
doaj   +1 more source

Stereochemical course of hydrolytic reaction catalyzed by alpha-galactosidase from cold adaptable marine bacterium of genus Pseudoalteromonas

Frontiers in Chemistry, 2014
The recombinant α-galactosidase of the marine bacterium (α-PsGal) was synthesized with the use of the plasmid 40Gal, consisting of plasmid pET-40b (+) (Novagen) and the gene corresponding to the open reading frame of the mature α-galactosidase of marine ...
Irina Yu Bakunina, Larissa A Balabanova, Vasiliy A Golotin, Lyubov V Slepchenko, Lyubov V Slepchenko, Vladimir V Isakov, Valeriy A Rasskazov   +6 more
doaj   +1 more source

A Concise Total Synthesis of (--)-Maoecrystal Z [PDF]

, 2011
The first total synthesis of (--)-maoecrystal Z is described. The key steps of the synthesis include a diastereoselective Ti^(III)-mediated reductive epoxide coupling reaction and a diastereoselective Sm^(II)-mediated reductive cascade cyclization ...
Cha, Jacob Y., Reisman, Sarah E., Yeoman, John T. S.   +2 more
core   +2 more sources

Survey of Pharmacological Activity and Pharmacokinetics of Selected β-Adrenergic Blockers in Regard to Their Stereochemistry

Applied Sciences, 2019
The present survey concentrates on pharmacodynamics and pharmacokinetics of selected β-adrenergic blockers from the point of view of their stereochemistry. It could be shown that the activity in the arylaminoethanol and aryloxyaminopropanol group of
Ružena Čižmáriková, Ladislav Habala, Jindra Valentová, Mário Markuliak   +3 more
doaj   +1 more source

A Practical Guide for Predicting the Stereochemistry of Bifunctional Phosphoric Acid Catalyzed Reactions of Imines.

Accounts of Chemical Research, 2016
Chiral phosphoric acids have become powerful catalysts for the stereocontrolled synthesis of a diverse array of organic compounds. Since the initial report, the development of phosphoric acids as catalysts has been rapid, demonstrating the tremendous ...
Jolene P. Reid, L. Simón, J. Goodman
semanticscholar   +1 more source

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

FEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang, Grace Du, Charity Yongo‐Luwawa, Angelina Lu, Brett Kinrade, Kim Munro, Karl E. Klose, William D. Lubell, Peter Davies, Shuaiqi Guo   +9 more
wiley   +1 more source

Cholesterol in mRNA‐Lipid Nanoparticles can be Replaced with the Synthetic Mycobacterial Monomycoloyl Glycerol Analogue MMG‐1

Advanced Functional Materials, EarlyView.
This study demonstrates that cholesterol in messenger RNA‐lipid nanoparticles (mRNA‐LNPs) can be completely replaced with an immunopotentiating lipid, i.e., a synthetic analogue of the C‐type lectin receptor agonist monomycoloyl glycerol (MMG‐1), without compromising physicochemical properties, in vivo transfection efficiency, and immunogenicity of the
Abhijeet G. Lokras, Saahil S. Baghel, Rune F. Jensen, Aneesh Thakur, Henrik Franzyk, Oskar Thofte, Marco Herrera‐Barrera, Madeleine Landry, Melike Ongun, Ahmad Tami, Marlene P. Thanthrige, Eva Callens, Corinne Beinat, Thomas Rades, Søren R. Paludan, Kristian Riesbeck, Ida Rosenkrands, Dennis Christensen, Gabriel K. Pedersen, Camilla Foged   +19 more
wiley   +1 more source

Resolução do ibuprofeno: um projeto para disciplina de química orgânica experimental

Química Nova, 2012
A practical and didactic sequence of experiments was proposed to illustrate the stereochemistry concept, optically active compounds, resolution of racemates, and use of the NMR technique, including 2D-COSY for identification of organic compounds, on a ...
Adriano L. Romero, Lúcia H. B. Baptistella, Fernando Coelho, Paulo M. Imamura   +3 more
doaj   +1 more source

The first total synthesis of (+)-mucosin

, 2012
The first total synthesis of (+)-mucosin has been completed allowing assignment of the absolute stereochemistry of the natural product. A zirconium induced co-cyclisation was utilised to install the correct stereochemistry of the four contiguous ...
Henderson, Alan R., Owen, David R., Stec, Jozef, Whitby, Richard J.   +3 more
core   +1 more source