Results 11 to 20 of about 202 (136)
Synthesis and Transformations of NH-Sulfoximines. [PDF]
Chemistry, 2021 This review considered recent progress and achievements in the synthesis and transformation of NH‐sulfoximines. The development of strategies for direct and selective preparation of NH‐sulfoximines, even in enantioenriched form or by using sustainable approaches and continuous flow synthesis, are reported. Transformations of sulfoximines by N−S, N−P, N−
Andresini M +4 more
europepmc +2 more sources
Anti-Inflammatory Activity of 1,2-Benzothiazine 1,1-Dioxide Derivatives. [PDF]
Pharmaceuticals (Basel)There is an urgent need to develop new anti-inflammatory compounds due to the versatility of their applications and the side effects associated with currently used nonsteroidal anti-inflammatory drugs (NSAIDs). Compounds containing the 1,2-benzothiazine 1,1-dioxide moiety in their structure have demonstrated a broad range of pharmacological activities,
Szczęśniak-Sięga BM, Topolska I.
europepmc +3 more sources
Synthesis of 3‐Aminohydantoinyl‐1,2‐benzothiazine Derivatives. [PDF]
ChemInform, 2003 AbstractFor Abstract see ChemInform Abstract in Full Text.
Myung‐Sook Park +3 more
openaire +2 more sources
Chiral Phosphoric Acids as Versatile Tools for Organocatalytic Asymmetric Transfer Hydrogenations. [PDF]
European J Org Chem, 2021 Organocatalytic asymmetric transfer hydrogenation provides a metal‐free and ambient alternative to classical reductions. Chiral phosphoric acid‐catalysis represents a powerful strategy in this field, with a range of novel and selective methods for various double bond reductions.
Pálvölgyi ÁM +3 more
europepmc +2 more sources
ChemCatChem, Volume 15, Issue 14, July 21, 2023., 2023 Bioactive hydroxytyrosol esters from tyrosol and lipophilic carboxylic acids are synthesized by multienzyme cascade immobilized on electroactive melanin lignin nanoparticles. Abstract A one‐pot strategy for the synthesis of bioactive hydroxytyrosol esters from tyrosol and lipophilic carboxylic acids has been developed via multienzyme cascade ...
Davide Piccinino +5 more
wiley +1 more source
Phenolic Polymers as Model Melanins
Macromolecular Chemistry and Physics, Volume 224, Issue 14, July 2023., 2023 Polymerization of a variety of phenolic monomers (CAT, DOPA, or HGA) yields conjugated polymers (polyCATs, polyDOPAs, or polyHGA‐HS, respectively) which are simplified versions of biologically generated melanins. Their chemical, paramagnetic, and electrical properties are analyzed to assess if there may be a correlation between the functional groups ...
Hanaa A. Galeb +16 more
wiley +1 more source
IUBMB Life, Volume 75, Issue 1, Page 55-65, January 2023., 2023 Abstract Neuromelanins are compounds accumulating in neurons of human and animal brain during aging, with neurons of substantia nigra and locus coeruleus having the highest levels of neuromelanins. These compounds have melanic, lipid, peptide, and inorganic components and are contained inside special autolysosomes.
Fabio A. Zucca +7 more
wiley +1 more source
European Journal of Organic Chemistry, Volume 2022, Issue 43, November 18, 2022., 2022 The N‐substituted‐3‐thioxo‐benzo[c][1,2]thiazin‐4‐one‐2,2‐dioxides are an original class of highly reactive electron‐poor heterodienes that allow easy access to unprecedented benzo‐thiazine bearing galactose and fucose derivatives in a remarkably selective way. Abstract The synthesis and reactivity in an [4+2] inverse electron demand hetero Diels‐Alder
Giacomo Biagiotti +4 more
wiley +1 more source
Sulfoximine‐Directed Arene ortho‐Lithiation
European Journal of Organic Chemistry, Volume 2021, Issue 46, Page 6229-6246, December 14, 2021., 2021 The growing importance of sulfoximines in medicinal chemistry has led to a renewed interest in their synthesis and functionalization. This review describes the directed ortho‐lithiation of S‐aryl sulfoximines. Discussed are the synthesis and reactivity of five different types of o‐lithiosulfoximines, including o‐lithiosulfoximines with and without α ...
Hans‐Joachim Gais
wiley +1 more source
Nature‐Inspired Functional Chromophores from Biomimetic o‐Quinone Chemistry
European Journal of Organic Chemistry, Volume 2021, Issue 21, Page 2982-2989, June 7, 2021., 2021 Bioinspired manipulation of o‐quinones generated from natural catechols represents a straightforward strategy to access the diverse molecular scaffolds endowed with peculiar functional chromophores, which offers a finely tunable palette of colors, emissions and input/output opportunities in response to pH, light, oxidant species and other external ...
Maria Laura Alfieri +4 more
wiley +1 more source