Results 191 to 200 of about 104,207 (331)

Gas Chromatography‐Mass Spectrometry Analysis, Genoprotective, and Antioxidant Potential of Curio radicans (L. f.) P.V. Heath

ChemistryOpen, EarlyView.
The ethyl acetate extract of Curio radicans is found to contain a higher proportion of bioactive compounds (55% vs 30% in the ethanolic extract) by gas chromatography‐mass spectrometry, and it exhibits stronger antioxidant activity in the DPPH assay (75% vs 65% inhibition) as well as clear genoprotective effects against H2O2‐induced DNA damage ...
Muhammad Naseer, Muhammad Adil, Sarir Ahmad, Mikhlid H. Almutairi, Abdulwahed Fahad Alrefaei, Sajid Ali, Fayaz Asad   +6 more
wiley   +1 more source

Magnetic nanocatalyst for microwave-assisted synthesis of Benzo[4,5]imidazo[1,2-<i>a</i>]pyrimidines via A3 coupling. [PDF]

Front Chem
Pan Y.
europepmc   +1 more source

Studies on Pyrimidine Derivatives. I

, 1958
Kenzo Sirakawa
openalex   +2 more sources

Efficient Synthesis of 1‐Chloroimidazo[1,2‐a:4,5‐c']dipyridines, Versatile Synthons for Position‐1 Functionalisation with Various Reagents

ChemistryOpen, EarlyView.
Imidazo[1,2‐a:4,5‐c']dipyridines are remarkable skeletons in the field of medicinal chemistry. This article presents the synthesis of 1‐chloroimidazo[1,2‐a:4,5‐c']dipyridines, versatile synthons to functionalize at position‐1. Several examples of further reactions are presented, including Suzuki–Miyaura and Sonogashira cross‐couplings, nucleophilic ...
Romain Dussart, Mélanie Pénichon, Pierre‐Olivier Delaye, Cécile Enguehard‐Gueiffier   +3 more
wiley   +1 more source

Pyrimidine sufficiency is required for Sae two-component system signaling in <i>Staphylococcus aureus</i>. [PDF]

J Bacteriol
DiMaggio DA, Yeo W-S, Brinsmade SR.
europepmc   +1 more source

Syntheses of Pyrimidine Compounds. IV

, 1949
Taizo Matsukawa, Buhachiro Ohta
openalex   +2 more sources

Visible Light–Induced Decarboxylative Radical Addition of Heteroaromatic Carboxylic Acids to Alkenes at Room Temperature in Two‐Molecule Photoredox System

ChemistryOpen, EarlyView.
The photoinduced decarboxylative radical addition of aryl carboxylic acids, including heteroaromatic carboxylic acids, to electron‐deficient alkenes is achieved in a two‐molecule photoredox system using a combination of biphenyl and 9,10‐dicyanoanthracene without heating or base.
Daisuke Suzuki, Ryoga Hashimoto, Toshiki Furutani, Mugen Yamawaki, Hirotsugu Suzuki, Yasuharu Yoshimi   +5 more
wiley   +1 more source

Multicomponent catalyst-free regioselective synthesis and binding studies of 3-aroyl-2-methylimidazo[1,2-<i>a</i>]pyrimidines with BSA using biophysical and computational techniques. [PDF]

RSC Adv
Aggarwal R, Sharma M, Sumran G, Kumar P.
europepmc   +1 more source

Studies on 4-Alkoxy-6-methyl-pyrimidine N-Oxides.

, 1958
Hiroshi Yamanaka
openalex   +2 more sources

CONSEQUENCES OF A SUPPRESSOR GENE EFFECTIVE WITH PYRIMIDINE AND PROLINE MUTANTS OF NEUROSPORA [PDF]

, 1962
Rowland H. Davis
openalex   +1 more source