Results 131 to 140 of about 48,430 (295)

Monosubstituted N‐Arylhydroxylamine Chemistry: Integrating Contemporary Synthetic Approaches for the Efficient Construction of Diverse Heterocyclic Scaffolds

Chemistry – A European Journal, EarlyView.
Monosubstituted N‐arylhydroxylamines represent a unique subclass of hydroxylamines that act as pivotal intermediates in redox transformations and as versatile platforms for further synthetic transformations. They serve as key building blocks in the synthesis of architecturally complex heterocycles and other valuable organic compounds.
Michael G. Kallitsakis, Kyriakos D. Nikopoulos, Ioannis N. Lykakis   +2 more
wiley   +1 more source

The Asymmetric Self‐Replicative Alkylation of N‐Arylaldimines Using Organolithium Reagents

Chemistry – A European Journal, EarlyView.
Here, we report a new asymmetric autoinductive reaction; the addition of nBuLi to N‐arylaldimines to form chiral lithium amides. The reaction proceeds with full conversion and complete transfer of chirality, representing the first example of an asymmetric autoinductive reaction with organolithium reagents.
Anka Hagelschuer, Paco Visser, Ben L. Feringa   +2 more
wiley   +1 more source

Substrate identification of putative NCS1 and NCS2 nucleobase transporters in Pseudomonas aeruginosa

mBio
Pseudomonas aeruginosa is an opportunistic pathogen that can salvage nucleobases from the environment to conserve nutrients that would otherwise be spent on de novo nucleotide biosynthesis.
Corey Kennelly, Arthur Prindle
doaj   +1 more source

Synthesis of Bicyclic Pyrrolo[2,3-d]Pyrimidines, and Tricyclic Indeno[2,1-d]/[1,2-d]Pyrimidines as Receptor Tyrosine Kinase (RTK) Inhibitors and Antimitotic Agents

, 2010
The dissertation will give an introduction, background and our research progress in the areas of receptor tyrosine kinases inhibitors and antimitosis inhibitors. The design and syntheses of bicyclic pyrrolo[2,3-d]pyrimidines, and tricyclic indeno[2,1-d]-
Zhao, Ying
core  

A laboratory infrared model of astrophysical pyrimidines [PDF]

Nucleobases are essential molecules for life, forming integral parts of DNA and RNA in all terrestrial life forms. Despite evidence of their abiotic synthesis in meteorites and laboratory simulations of interstellar medium (ISM) conditions, nucleobases ...
Bergantini, Alexandre, da Silveira, Enio Frota, Emilio, Marcelo, Andrade, Laerte, Pacheco, Eduardo Janot, Mason, Nigel J., Lage, Claudia, Rosa, Caroline Antunes   +7 more
core   +1 more source

Strain Release of 1‐Azabicyclo[1.1.0]butanes as a Gateway to Highly Functionalized Azetidines: New Strategies and Structural Motifs

Chemistry – A European Journal, EarlyView.
Over the past decade, the interest in azetidines has continuously risen, by virtue of their highly appealing pharmaceutical properties. Monocyclic, spirocyclic, and bridged azetidines can be accessed by leveraging 1‐azabicyclo[1.1.0]butanes as precursors.
Yuri Gelato, Philipp Natho, Marco Colella, Renzo Luisi   +3 more
wiley   +1 more source

Synergistic Action of Ascorbic Acid and Readily Accessible NHC^N Ligands for the Oxidation of Gold(I) With Electron‐Rich Aryldiazonium Salts

Chemistry – A European Journal, EarlyView.
The synergic action of ascorbic acid and NHC^N ligands enables Au(I) oxidation with electron‐rich aryldiazonium salts. ABSTRACT The synergistic action of ascorbic acid and NHC^N ligands enables the challenging oxidation of Au(I) with electron‐rich aryldiazonium salts in the absence of a cocatalyst and/or irradiation. EPR, NMR, and x‐ray analyses reveal
Paula G. Cárdenas‐Cárdenas, Diego Dusso, Saúl Soto‐Zúñiga, Osvaldo F. López‐Saladino, Simón Hernández‐Ortega, Rubén A. Toscano, Virginia Gómez‐Vidales, Susana Porcel‐García   +7 more
wiley   +1 more source

Classical and Nonclassical Antifolates: Synthesis of Furo-[2,3-d] Pyrimidines Pyrrolo[2,3-d]Pyrimidines and Pyrimido-[4, 5-b]-Indoles

, 2010
The dissertation will give an introduction, background and our research progress in the areas of antifolates. The design and synthesis of both classical and nonclassical bicyclic furo[2,3-d]pyrimidines, pyrrolo[2,3-d]pyrimidines and tricyclic pyrimido[4 ...
Wang, Lei
core  

Heteroatom‐Doped Graphdiynes and Their Applications in Photo‐/Electro‐Catalytic CO2 Conversion

Carbon Innovation, EarlyView.
This review highlights the versatile role of doped graphdiyne (GDY) in boosting CO2 conversion, where metal and non‐metal doping simultaneously tune the electronic structure, create abundant active sites, and improve charge separation, light harvesting, and CO2 adsorption.
Fangzhou Yang, Yuwei Zhang, Wai‐Yeung Wong, Linli Xu   +3 more
wiley   +1 more source

RESEARCHES ON PYRIMIDINES: PYRIMIDINE-NUCLEOSIDES

Journal of Biological Chemistry, 1913
Treat B. Johnson, Lewis H. Chernoff
openaire   +1 more source