Results 231 to 240 of about 88,147 (300)

On the fragmentation of furan molecule and its dependence on the laser wavelength [PDF]

open access: yes, 2008
Al-Kahali, M. S. N.   +3 more
core  

Zwitterionic Mn(III)‐Tetraphenyl Porphyrins: Water‐Soluble MRI Contrast Agents with High Relaxivity

open access: yesChemMedChem, Volume 21, Issue 8, 28 April 2026.
Mn(III)‐based contrast agents (MBCAs) are promising and potentially safer alternatives to the Gd(III)‐based contrast agents (GBCAs) currently used in MRI. This study reports the synthesis, physicochemical characterization and first in vivo application of novel Mn(III)‐tetraphenylporphyrin chelates, bearing zwitterionic sulfobetaine or N‐oxide groups ...
Darius Ludolfs   +10 more
wiley   +1 more source

Pyrrolopyrimidine derivatives as dual COX-2/ACE2 inhibitors: design, synthesis, and anti-inflammatory evaluation. [PDF]

open access: yesFront Mol Biosci
Afifi H   +8 more
europepmc   +1 more source

Stereoselective Chemoenzymatic Synthesis Metaraminol Involving Gold‐Catalysed Alkyne Hydration and Carbonyl Biotransamination

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 16, 25 April 2026.
A chemoenzymatic synthesis of (1R,2S)‐metaraminol was developed by combining gold(I)‐catalysed alkyne hydration and stereoselective biotransamination in a sequential one‐pot process. Various phenol protection strategies were considered in oxidation‐reduction sequences, providing access to enantiopure propargylic alcohols as starting materials for ...
Lorena Escot   +2 more
wiley   +1 more source

Porphyrin‐Geländer–Helical Conjugated Banister Type Porphyrin Dyads

open access: yesChemistry – A European Journal, Volume 32, Issue 15, 22 April 2026.
Porphyrin arrays go chiral–A porphyrin Geländer macrocycle represents the intriguing prototype architecture of helically chiral butadiyne‐linked porphyrin arrays. This study combines synthetic, spectroscopic, and computational methods to shed light on its structure, chiroptical properties, and tunability, highlighting its promise for advancing ...
Joël F. Keller   +2 more
wiley   +1 more source

Merging Pyrrole with Boron into Versatile Di(2-pyrryl)borane Building Blocks: π-Extension, Polymerization, and Coordination. [PDF]

open access: yesAngew Chem Int Ed Engl
Göbel D   +6 more
europepmc   +1 more source

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