Artykuł w czasopiśmie
Brak miniatury
Licencja

 

Impact of the Substituents on the Electronic Structure of the Four Most Stable Tautomers of Purine and Their Adenine Analogues

Uproszczony widok
cris.lastimport.scopus2024-02-12T20:09:25Z
dc.abstract.en<p>Substituent effects at the C2-, C8-, and N-positions of adenine and purine on the structural and π-electronic changes in their four tautomers were studied using the B97D3/aug-cc-pvdz computational level. The effect of various substituents (NO<sub>2</sub>, CN, CHO, Cl, F, H, Me, OMe, OH, and NH<sub>2</sub>) was characterized by the charge of the substituent active region (cSAR) approach and Hammett substituent constants σ. It has been found that for both adenine and purine derivatives, substituents from the C8-X position have a stronger influence on their electronic structure than from the C2-X and N-X positions. The presence of the amino group in adenine enhances the substituent effect compared to that which occurs in purine. In addition, its electronic structure is more sensitive to the effect of the substituent in 3H and 1H than in the 9H and 7H adenine tautomers. For a given substituent, a large variation in cSAR(X) values is observed, strongly dependent on the substitution position. For 7H and 9H adenine tautomers for C8-X systems, substituents reduce the aromaticity of the five-membered rings but increase the aromaticity of the six-membered rings. ©</p>
dc.affiliationUniwersytet Warszawski
dc.contributor.authorJezuita, Anna
dc.contributor.authorSzatylowicz, Halina
dc.contributor.authorKrygowski, Tadeusz
dc.date.accessioned2024-01-25T03:57:14Z
dc.date.available2024-01-25T03:57:14Z
dc.date.copyright2020-05-12
dc.date.issued2020
dc.description.accesstimeAT_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number20
dc.description.versionFINAL_PUBLISHED
dc.description.volume5
dc.identifier.doi10.1021/ACSOMEGA.0C00820
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/109047
dc.identifier.weblinkhttps://pubs.acs.org/doi/full/10.1021/acsomega.0c00820
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofACS Omega
dc.relation.pages11570-11577
dc.rightsOther
dc.sciencecloudnosend
dc.titleImpact of the Substituents on the Electronic Structure of the Four Most Stable Tautomers of Purine and Their Adenine Analogues
dc.typeJournalArticle
dspace.entity.typePublication