Results 71 to 80 of about 2,267 (195)

Efficient synthesis of dipeptide analogues of α-fluorinated β-aminophosphonates

open access: yesBeilstein Journal of Organic Chemistry, 2020
Herein, we present an efficient synthesis of dipeptide analogues of α-fluorinated β-aminophosphonates. Each step of the synthesis was optimized to provide excellent yields.
Marcin Kaźmierczak, Henryk Koroniak
doaj   +1 more source

Addition and cycloaddition reactions of Phosphinyl- and Phosphonyl-2H-Azirines, Nitrosoalkenes and Azoalkenes [PDF]

open access: yes, 2012
An overview of the use of 2H-azirines, conjugated nitrosoalkenes and conjugated azoalkenes bearing phosphorus substituents in addition and cycloaddition reactions is presented, focused on strategies for the synthesis of aminophosphonate and ...
Lemos, A.
core  

Stereoselective Synthesis of α‐Aminophosphonic Acids through Pudovik and Kabachnik‐Fields Reaction [PDF]

open access: yes, 2017
Representative examples concerning the Pudovik and Kabachnik‐Fields reactions as the main strategies for the stereoselective synthesis of α‐aminophosphonic acids are discussed, classifying these reactions according to the chiral auxiliary and chiral ...
Ordóñez, Mario   +2 more
core   +2 more sources

Design, Synthesis, Biological Evaluation and Molecular Docking Studies of New Thiazolidinone Derivatives as NNRTIs and SARS‐CoV‐2 Main Protease Inhibitors

open access: yesChemistry &Biodiversity, Volume 21, Issue 12, December 2024.
Abstract HIV‐1 remains a major health problem worldwide since the virus has developed drug‐resistant strains, so, the need for novel agents is urgent. The protein reverse transcriptase plays fundamental role in the viruses’ replication cycle. FDA approved Delavirdine bearing a sulfonamide moiety, while thiazolidinone has demonstrated significant anti ...
Maria Fesatidou   +2 more
wiley   +1 more source

Synthesis and Bioactivity of a-Aminophosphonates Containing Fluorine

open access: yesMolecules, 2003
Twenty-one a-aminophosphonates containing fluorine were synthesized by Mannich-type reactions. Their structures were established by elemental analysis, IR, 1H- NMR and MS.
Lin-Hong Jin   +5 more
doaj   +1 more source

Cytotoxic Activity of Distinct Families of Phosphonic Acid Derivatives – A Chemocentric Approach to Assess Their Molecular Action

open access: yesChemMedChem, Volume 19, Issue 21, November 4, 2024.
Phosphonates represent unique chemical space among the biologically active compounds. Several compounds were measured on various human cancer cell lines and many of them showed remarkable cytotoxic activities. To assess their potential protein targets the structure of the hits were compared with known agents annotated with targets using fingerprint ...
György Dormán   +2 more
wiley   +1 more source

Badania stereochemii addycji H-fosfonianów do chiralnych i achiralnych diimin [PDF]

open access: yes, 2015
Celem pracy doktorskiej było zbadanie stereochemii reakcji addycji H-fosfonianów do wybranych diimin. Praca w szczególności skupiała się na stereoselektywnej addycji do imin opartych na szkielecie (R,R)-1,2-diaminocykloheksanu.
Tokarz, Paweł
core  

Sphingosine 1-phosphate enhances the excitability of rat sensory neurons through activation of sphingosine 1-phosphate receptors 1 and/or 3 [PDF]

open access: yes, 2015
BACKGROUND: Sphingosine-1-phosphate (S1P) is a bioactive sphingolipid that acts through a family of five G-protein-coupled receptors (S1PR1-5) and plays a key role in regulating the inflammatory response.
Guerrero, Miguel   +4 more
core   +1 more source

Catalytic Asymmetric Cycloadditions of Cyclic Sulfamidate Imines: Straightforward Access to Chiral N‐Heterocycles

open access: yesAdvanced Synthesis &Catalysis, Volume 366, Issue 19, Page 3926-3942, October 8, 2024.
Abstract Chiral N‐heterocyclic compounds are key structures in natural compounds and pharmaceuticals, and they serve as essential building blocks of functional materials. Catalytic asymmetric cycloaddition reactions represent one of the most efficient synthetic strategies for constructing optically active heterocycles.
Jong‐Un Park, Ju Hyun Kim
wiley   +1 more source

Green Metrics and Sustainability in Photocatalysis

open access: yesChemCatChem, Volume 16, Issue 14, July 22, 2024.
Lights and shadows in photocatalysis. This Review analyzes the sustainability of photoredox catalytic processes in the context of mass‐based metrics, highlighting significant sustainability issues in photocatalysts synthesis and in catalytic protocols, primarily driven by energy demanding preparations and by solvent intensive work‐up and purification ...
Arianna Quintavalla   +2 more
wiley   +1 more source

Home - About - Disclaimer - Privacy