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Related to pteridine: purine, folic acid


1. A yellow crystalline compound, C6H4N2, having two fused six-member aromatic rings each containing two nitrogen atoms and four carbon atoms. One of the rings is a pyrimidine; the other is a pyrazine.
2. Any of a group of organic compounds derived from this compound, including folic acid and the pigments of butterfly wings.

[German Pteridin : Pter(in), pigment of insect wings (from Greek pteron, wing; see -pter) + -id, -ide + -in, -ine.]


(Chemistry) chem a yellow, crystalline, heteroaromatic compound having a bicyclic molecular structure; any substituted derivative of this, examples of which occur naturally, esp as vitamins of the B group and insect pigments. Formula: C6H4N4
References in periodicals archive ?
The folic acid chemical structure consists of a pteridine ring, a p-aminobenzoic acid, and a molecule of L-glutamic acid (2,3).
Among the biomarkers for diagnosis and prognosis in AMI, the Neopterin, a pteridine derivative is considered to be one of the new novel biomarkers, which is found to be elevated in patients with AMI (1).
2,5,8,13) Folates also differ from folic acid "in the extent of the reduction state of the pteroyl group, the nature of the substituents on the pteridine ring and the number of glutamyl residues attached to the pteroyl group.
The New Medicine for Trypanosomatid Infections (NMTrypI) consortium uses a highly interdisciplinary approach to optimize pteridine, benzothiazole and miltefosine derivatives, as well as natural products against Trypanosomatids.
These alkaloids include quinazoline, quinaxaline, cinnoline, phthalazine and other three or four membered ring azaheterocycles such as, pteridine, alloxazine, isoalloxazine [1].
These results indicate that abnormal pteridine metabolism contributes to causing endothelial dysfunction and the enhancement of vascular oxidative stress in the insulin-resistant state.
Leishmania donovani: oral therapy with glycosyl 1,4-dihydropyridine analogue showing apoptosis like phenotypes targeting pteridine reductase 1 in intracellular amastigotes.
During the study, the researchers identified six pteridine derivatives, compounds that help regulate the metabolism of cells, in the urine samples.
Environmental control of seasonal variation in the butterfly Colias eurytheme: effects of photoperiod and temperature on the pteridine pigmentation.
These compounds have similar chemical structures, consisting of a reduced pteridine moiety coupled through a methylene group to p-aminobenzoic acid (pABA) [4], to which glutamic acid is attached via an amide bond.