Results 91 to 100 of about 8,420 (250)

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
doaj   +1 more source

Pteridines CII Synthesis and Characterization of Dimeric Lumazines

Pteridines, 1994
Reduction of 1.3-dimethyllumazine (1) by zinc dust in Ac2O/AcOH leads to the formation of 6-7 connected bis-Iumazinyl derivatives. Depending on the reaction conditions either 7 -(5-acetyl-5,6, 7,8-tetrahydro-1.3-dimethyllumazin- 6-yl)-l, 3 ...
Koul Ashok, Wagner Thomas, Pfleiderer Wolfgang   +2 more
doaj   +1 more source

Changes in FeNO, d-ROMs, and BH4 by Intravenous L-Arginine in Children and Its Putative Role in Asthma Treatment

Journal of Asthma and Allergy
Naho Yamamoto,1 Saki Kasuga,1 Daijiro Kabata,2 Myu Ono,1 Sakura Ando,1 Taisuke Hashimoto,1 Shiori Fujikawa,1 Hiroko Fujitani,3 Ayumi Shintani,2 Takashi Hamazaki1 1Department of Pediatrics, Osaka Metropolitan University Graduate School of Medicine, Osaka,
Yamamoto N, Kasuga S, Kabata D, Ono M, Ando S, Hashimoto T, Fujikawa S, Fujitani H, Shintani A, Hamazaki T   +9 more
doaj  

5-Ethyl-4a-methoxy-1,3-dimethyl-4a,5-dihydrobenzo[g]pteridine-2,4(1H,3H)dione [PDF]

, 2009
Petra Ménová, Václav Eigner, Radek Cibulka, Jan Čejka, Hana Dvořáková   +4 more
openalex   +1 more source

Iris colour in passerine birds: why be bright-eyed? [PDF]

, 2004
An initial survey of iris coloration in passerine birds (Aves: Passeriformes) showed that a brightly pigmented iris is much more common in southern African and Australian birds than in those from Europe, temperate North America, and Venezuela.
Craig, A J F K, Hulley, P E
core   +2 more sources

Synthesis of 6β-N(5)-Methyl-5,6,7,8-tetrahydro-L-biopterin [PDF]

, 2017
Summary 6β-N(5)-methyl-5.6J,8-tetrahydro-L-biopterin·2 HC1. a new derivate of biological interest, was synthesized from 6β-5,6,7,8-tetrahydro-L-biopteril·2 HC1 and characterized.
Bosshard, Rene, Heizmann, Claus W., Viscontini, Max   +2 more
core  

Pteridines, sterols, and indole derivatives from the lithistid sponge Corallistes undulatus of the Coral Sea [PDF]

, 1993
D'Ambrosio, M., Debitus, Cécile, Guerriero, A., Pietra, F., Ribes, Olivier   +4 more
core   +1 more source

Thyroid hormone regulates distinct paths to maturation in pigment cell lineages [PDF]

, 2019
Thyroid hormone (TH) regulates diverse developmental events and can drive disparate cellular outcomes. In zebrafish, TH has opposite effects on neural crest derived pigment cells of the adult stripe pattern, limiting melanophore population expansion, yet
Aman, Andrew J, Corbo, Joseph C, Lewis, Victor M, McFaline-Figueroa, Jose L, Mishra, Abhishek K, Packer, Jonathan S, Parichy, David M, Qiu, Xiaojie, Saunders, Lauren M, Toomey, Matthew B, Trapnell, Cole   +10 more
core   +1 more source

Synthesis, Anti-inflammatory and Antibacterial Activities of Novel Pyrazolo[4,3-<i>g</i>]pteridines

, 2016
Shawkat A. Abdel‐Mohsen, Talaat I. El‐Emary, Hussein El‐Kashef   +2 more
openalex   +2 more sources

Regulation of pteridine biosynthesis

, 1971
Douglas Wesley Shivvers
openalex   +1 more source