Results 31 to 40 of about 4,628 (262)

Pteridines CX

open access: yesPteridines, 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
doaj   +1 more source

Mutationen im PTS-Gen und mögliche Auswirkungen auf Funktion und Struktur der 6-Pyruvoyl-Tetrahydropterin-Synthase [PDF]

open access: yes, 2002
Background: Research on Juvenile Idiopathic Arthritis (JIA) should support patients, caregivers/parents (carers) and clinicians to make important decisions in the consulting room and eventually to improve the lives of patients with JIA.
Armbrust, Wineke   +24 more
core   +9 more sources

Exploring the scope of DBU-promoted amidations of 7-carboxymethyl-pterin [PDF]

open access: yes, 2020
Pteridines are an important heterocycle often used in the development of pharmaceutically relevant compounds, and in the field of supramolecular chemistry.
Bockman, Anna
core   +1 more source

CSF Amino Acids, Pterins and Mechanism of the Ketogenic Diet

open access: yesPediatric Neurology Briefs, 2015
Investigators from Hospital Sant Joan de Deu, Barcelona, Spain, studied the relationship between the etiology of refractory childhood epilepsy, CSF neurotransmitters, pterins, and amino acids, and response to a ketogenic diet in 60 patients with ...
J. Gordon Millichap
doaj   +1 more source

Mapping an atlas of tissue-specific drosophila melanogaster metabolomes by high resolution mass spectrometry [PDF]

open access: yes, 2013
Metabolomics can provide exciting insights into organismal function, but most work on simple models has focussed on the whole organism metabolome, so missing the contributions of individual tissues.
A Kamleh   +47 more
core   +3 more sources

Determination of Urinary Pterins by Capillary Electrophoresis Coupled with LED-Induced Fluorescence Detector

open access: yesMolecules, 2019
Urinary pterins have been found as potential biomarkers in many pathophysiological conditions including inflammation, viral infections, and cancer. However, pterins determination in biological samples is difficult due to their degradation under exposure ...
Wojciech Grochocki   +3 more
doaj   +1 more source

7‐Substituted pterins in humans with suspected pterin‐4a‐carbinolamine dehydratase deficiency [PDF]

open access: yesEuropean Journal of Biochemistry, 1992
A recently described new form of hyperphenylalaninemia is characterized by the excretion of 7‐substituted isomers of biopterin and neopterin and 7‐oxo‐biopterin in the urine of patients. It has been shown that the 7‐substituted isomers of biopterin and neopterin derive from L‐tetrahydrobiopterin and D‐tetrahydroneopterin and are formed during ...
Adler, Carmen   +7 more
openaire   +3 more sources

First Synthesis of Biopterin α-D-Glucoside [PDF]

open access: yes, 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
core   +1 more source

Plasma levels of soluble VEGF receptor isoforms, circulating pterins and VEGF system SNPs as prognostic biomarkers in patients with acute coronary syndromes

open access: yesBMC 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
doaj   +1 more source

Reviewing the relevance of fluorescence in biological systems [PDF]

open access: yes, 2015
Fluorescence is emitted by diverse living organisms. The analysis and interpretation of these signals may give information about their physiological state, ways of communication among species and presence of specific chemicals.
Cordon, Gabriela Beatriz   +2 more
core   +1 more source

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