Results 71 to 80 of about 40,087 (250)

Unraveling A4GALT Mechanism and Its Modulation With Adamantyl‐Galactosylceramide Analogues: Advancing Fabry Disease Therapeutic Strategies

open access: yesAngewandte Chemie, EarlyView.
A 310‐helix‐mediated conformational switch promotes a front‐face SNi‐like catalysis by human A4GALT. Mechanism‐guided design identifies AdaGalCer as a selective modulator of globotriaosylceramide (Gb3) biosynthesis, opening a clear route toward new Fabry disease therapeutics.
Nicky de Koster   +13 more
wiley   +2 more sources

π‐Extended COUPY Fluorophores for Targeted Near‐Infrared Fluorescence and Lifetime Imaging in Live Cells

open access: yesAngewandte Chemie, EarlyView.
π‐Extended COUPY dyes, obtained by vinylogation of coumarin‐based COUPY scaffolds, shift absorption, and emission deep into the NIR region while preserving compactness and synthetic accessibility. These bright, photostable dyes enable live‐cell imaging, FLIM, and site‐specific peptide conjugation, offering a modular platform for targeted bioimaging and
Diego Abad‐Montero   +11 more
wiley   +2 more sources

DESIGN OF AN EDUCATIONAL GAME AND ITS USE IN A TEAM GAME TOURNAMENT AS A STRATEGY TO ENGAGE STUDENTS IN REVIEWING STEREOCHEMISTRY CONCEPTS [PDF]

open access: yesQuímica Nova
This paper presents a Chemistry Team Game Tournament (TGT) as a didactic strategy to review stereochemistry concepts. For this purpose, a multilingual (English, Italian, French, and Portuguese) educational game, Stereochemistry Race, was developed on the
José Nunes da Silva Júnior   +8 more
doaj   +1 more source

Ortho‐Quinone Methide Driven Synthesis of New O,N‐ or N,N‐Heterocycles

open access: yesChemistryOpen, 2019
To synthesize functionalized Mannich bases that can serve two different types of ortho‐quinone methide (o‐QM) intermediates, 2‐naphthol and 6‐hydroxyquinoline were reacted with salicylic aldehyde in the presence of morpholine.
Dr. István Szatmári   +5 more
doaj   +1 more source

Integrated X-Ray, NMR, ECD, and Computational Approaches to Assign the Stereochemistry of Nortriterpenoids

open access: yesNatural Product Communications, 2019
Highly oxygenated nortriterpenoids are the principle bioactive chemical constituents isolated from plants of the genera Schisandra and Kadsura . The stereochemistry of these molecules remains a highly challenging problem to solve.
Xiaojuan Wang, Mark T. Hamann
doaj   +1 more source

Stereochemistry. [PDF]

open access: yesJournal of the American Chemical Society, 1908
n ...
openaire   +1 more source

Stereochemical Research on Cembranes Diterpenoid Sinulariol Z Based on Residual Dipolar Couplings

open access: yesChinese Journal of Magnetic Resonance
Research on the stereochemistry of natural products, especially that of flexible macrocyclic molecules, has always been a huge challenge. Cembranes diterpenoids are a typical class of flexible macrocyclic molecules, whose configurations are often ...
SHI Xing   +3 more
doaj   +1 more source

Polarimetry and stereochemistry: the optical rotation of Vitamin C as a function of pH

open access: yesEducación Química, 2015
A novel experiment was prepared to help chemistry educators to improve the stereochemistry curriculumof secondary school students and undergraduate students.
Johan A. Linthorst   +1 more
doaj   +1 more source

Plasma analysis of di- and trihydroxycholestanoic acid diastereoisomers in peroxisomal α-methylacyl-CoA racemase deficiency

open access: yesJournal of Lipid Research, 2001
We identified a new peroxisomal disorder caused by a deficiency of the enzyme α-methylacyl-coenzyme A (CoA) racemase. Patients with this disorder show elevated plasma levels of pristanic acid and the bile acid intermediates di- and trihydroxycholestanoic
Sacha Ferdinandusse   +5 more
doaj   +1 more source

Highly Enantio‐ and Diastereoselective Synthesis of Tetrahydrofuran Frameworks via Chiral Lewis Acid‐Catalyzed Formal [3+2] Cycloaddition of Allylsilanes

open access: yesAngewandte Chemie International Edition, EarlyView.
The first catalytic asymmetric formal [3+2] cycloaddition of allylsilanes delivers cis‐2,5‐disubstituted tetrahydrofuran‐3‐ones that serve as versatile intermediates for the synthesis of diverse bioactive scaffolds. ABSTRACT A formal [3+2] cycloaddition via cyclization/1,2‐hydride shift initiated by nucleophilic attack of allylsilanes has been ...
Hosung Lee   +5 more
wiley   +1 more source

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