Results 81 to 90 of about 8,395 (249)

Studies on the Feculae of Selected Michigan Acrididae (Orthoptera) [PDF]

, 2017
Feculae have been used for some years in the study of insect food-habits and biology. Among the past authors who have used them are Frost (1928), Hodson and Brooks (1956), and Morris (1942), who discussed the use of feculae and frass in the ...
Gangwere, S.K., Tyrkus, Michael
core   +3 more sources

Synthesis, structure and photophysical properties of novel thiazolo[2,3-b]pteridines

Acta Chimica Slovenica
A one-pot synthesis of a series of thiazolo[2,3-b]pteridines, along with an alternative step-by-step procedure, has been developed. The regioselectivity of the heterocyclization was determined using a combination of physicochemical methods, including X ...
Daryna Kyrylova, Oleksii Voskoboinik, Anatolii Tatarets, Liubomyr Havryshchuk, Svitlana Shishkina, Sergiy Okovytyy, Serhii Kovalenko   +6 more
doaj   +1 more source

6-Acetonylisoxanthopterin: A Potent Inhibitor of Sepiapterin Reductase

Pteridines, 1991
The inhibitory effect of 6-/7-substituted (2'-oxo) pteridines and ichthyopterin was examined for sepiapterin reductase. 6-Acetonylisoxanthopterin and 6-acetonyl-2,4-diamino-7-hydroxypteridine showed pronounced competitive inhibitory effects to ...
Nakanishi A., Goto M., Katoh S., Sueoka T.   +3 more
doaj   +1 more source

An in vitro System for Studying Pteridine Biosynthesis In Drosophila melanogaster

Pteridines, 1991
In vitro organ culture is a system especially useful for the study of metabolic pathways and their regulation. This report applies such a system to the study of the biosynthesis of pteridines in Drosophila melanogaster, determining in vitro optimal ...
Escriche B., Silva F. J.
doaj   +1 more source

Purification and Characterization of Sepiapterin Deaminase from the Silkworm, Bombyx mori

Pteridines, 1998
Sepiapterin deaminase has been purified approximately 6,000-told from the larval integument of the lemon mutant of the silkworm by several column chromatographic procedures.
Sawada Hiroshi, Kanekatsu Motoki, Nakagoshi Motoko, Dohke Kenjiro, Iino Teruhiko, Takikawa Shin-Ichiro   +5 more
doaj   +1 more source

New Prenylated Indole Homodimeric and Pteridine Alkaloids from the Marine-Derived Fungus Aspergillus austroafricanus Y32-2 [PDF]

, 2021
Peihai Li, Mengqi Zhang, Haonan Li, Rongchun Wang, Hairong Hou, Xiaobin Li, Kechun Liu, Hao Chen   +7 more
openalex   +1 more source

What Have We Learned from Cerebrospinal Fluid Studies about Biomarkers for Detecting LRRK2 Parkinson’s Disease Patients and Healthy Subjects with Parkinson’s-Associated LRRK2 Mutations?

Journal of Parkinson’s Disease, 2019
Mutations in the leucine-rich repeat kinase 2 (LRRK2) gene are the most common known cause of autosomal dominant Parkinson’s disease (PD) and sporadic PD (sPD).
David A. Loeffler, Jan O. Aasly, Peter A. LeWitt, Mary P. Coffey   +3 more
doaj   +1 more source

34th International Winter Workshop / Clinical, Chemical and Biochemical Aspects of Pteridines and Related Topics [PDF]

, 2015
Melichar Palacký, Channon Km, W. Pichler, L Fried, X Leng, J Gostner, C Murr, L Diamondstone, R Walter, E Pedersen, G Chiva-Blanch, C Murr, Santos-Sierra S, J Underhaug, J Fuchs, J Ronau, J Fuchs, R Huber, J Cata, E Vamvakas, K Becker, G Brandacher, D Munn, A Mellor, B Widner, H Schennach, J Gostner   +26 more
openalex   +1 more source

A New Family of Fused Azolo[1,5-a]pteridines and Azolo[5,1-b]purines [PDF]

, 2020
Denis A. Gazizov, Evgeny B. Gorbunov, Gennady L. Rusinov, Evgeny N. Ulomsky, Valery N. Charushin   +4 more
openalex   +1 more source

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