Results 41 to 50 of about 4,302 (241)
Production and quenching of reactive oxygen species by pterin derivatives, an intriguing class of biomolecules [PDF]
, 2019 Pterins, a family of heterocyclic compounds derived from 2-aminopteridin-4(1H)-one, are widespread in living systems and participate in important biological functions, such as metabolic redox processes.
Dántola, María Laura +4 more
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Pteridines, 1999 A series of new 6-substituted 2,4-diaminopteridines (3-23) and pterins (26-43) have been synthesized by nucleophilic displacement reactions at the side chain of 6-bromomethyl-2,4-diaminopteridine (2) and 6- bromomethylpterin (25) using various types of 0-
Traub Hermann, Pfleiderer Wolfgang
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First Synthesis of Biopterin α-D-Glucoside [PDF]
, 2009 A novel glycosyl donor, 4,6-di-O-acetyl-2,3-di-O-(4-methoxy-benzyl)-α-D-glucopyranosy bromide (15) was efficiently prepared from D-glucose in 8 steps.
Baba, Hiroki +2 more
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Pterin-lysine photoadduct: A potential candidate for photoallergy [PDF]
, 2022 Photoallergy is a photosensitivity disorder associated with a modified ability of the skin to react to the combined effect of drugs and sunlight. It has been attributed to the covalent conjugation of proteins with a photosensitizer, yielding modified ...
Dantola, Maria Laura +4 more
core +2 more sources
Fluorescence of pterin, 6-formylpterin, 6-carboxypterin and folic acid in aqueous solution: pH effects [PDF]
, 2002 Steady-state and time-resolved studies have been performed on four compounds of the pterin family (pterin, 6-carboxypterin, 6-formylpterin and folic acid) in aqueous solution, using the single photon counting technique.
Braun, André M. +5 more
core +1 more source
Cells, 2019 Inborn errors of monoamine neurotransmitter biosynthesis and degradation belong to the rare inborn errors of metabolism. They are caused by monogenic variants in the genes encoding the proteins involved in (1) neurotransmitter biosynthesis (like tyrosine
Sabine Jung-Klawitter +1 more
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Pteridines XCVIII. Synthesis and Properties of 1-Methylpterins
Pteridines, 1993 A series of 1-methyl-pterin derivatives (6-13) have been synthesized by condensation and methylation reactions. The compounds have been characterized by elemental analyses, pKa deterimations and UV spectra.
Pfleiderer Wolfgang
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Body coloration and mechanisms of colour production in Archelosauria: the case of deirocheline turtles [PDF]
Royal Society Open Science, 2019 Animal body coloration is a complex trait resulting from the interplay of multiple mechanisms. While many studies address the functions of animal coloration, the mechanisms of colour production still remain unknown in most taxa.
Jindřich Brejcha +7 more
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Theoretical Study on the Relative Energies of Anionic Pterin Tautomers
Pteridines, 2009 Pterins exist as several tautomeric forms and behave as weak acids in aqueous solutions. Therefore, several acidbase equilibria may be present. For several pterin derivatives, the range of the experimental pKa lies in the range 6-8.
Soniat Michael, Martin Christopher B.
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BMC Cardiovascular Disorders, 2018 Background Development of collateral circulation in coronary artery disease is cardio-protective. A key process in forming new blood vessels is attraction to occluded arteries of monocytes with their subsequent activation as macrophages. In patients from
Edward C. A. Marks +16 more
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