Results 21 to 30 of about 29,220 (210)

Synthesis and properties of 3-(ethylthio)-9-methyl-6-(alkylthio)pyrazolo[1,5-d][1,2,4]triazolo[3,4-f][1,2,4]triazines

Aktualʹnì Pitannâ Farmacevtičnoï ì Medičnoï Nauki ta Praktiki, 2022
The combination of pyrazole and 1,2,4-triazole fragments in one structure makes it possible to achieve some success in creating potential biologically active compounds. Various factors contribute to this process.
S. O. Fedotov, A. S. Hotsulia
doaj   +3 more sources

The synthesis of 1,2,4-triazines bearing the residues of higher alcohols in the 5-position via the ipso-substitution of cyano group under the solvent-free conditions

Chimica Techno Acta, 2017
A convenient method for the obtaining of 3,6-diaryl-1,2,4-triazines substituted with  residues of higher alcohols in the position of C5 via the ipso-substitution of cyano group in under the solvent free conditions was reported.
A. P. Krinochkin, D. S. Kopchuk, E. S. Starnovskaya, Ya. K. Shtaiz, A. F. Khasanov, I. S. Kovalev, O. S. Taniya, G. V. Zyryanov, V. L. Rusinov, O. N. Chupakhin   +9 more
doaj   +3 more sources

(Hetero)Arene Ring-Fused [1,2,4]Triazines

Molbank
Synthetic access to a five (hetero)arene ring-fused 3-phenyl[1,2,4]triazines is described. The resulting compounds were characterized via 1H and 13C NMR, IR, UV–vis spectroscopy and HRMS.
Mahshid Teymouri, Anna Pietrzak, Paulina Bartos   +2 more
doaj   +2 more sources

A new convenient synthesis of 3-hetaryl-pyrazolo[5,1-c][1,2,4]triazines

Journal of Advanced Research, 2012
Reactions of enaminones 2 with diazotized 5-amino-3-phenylpyrazole provide a convenient route to 3-[(4,5-disubstituted-pyrazol-3-yl)carbonyl]-pyrazolo[5,1-c][1,2,4]triazines.
Ahmad S. Shawali
doaj   +2 more sources

Pyrazolo[4,3-e][1,2,4]triazines: Purine Analogues with Electronic Absorption in the Visible Region

Molecules, 2005
Synthesis of several pryrazolo[4,3-e][1,2,4]-triazines is described. Theabsorption spectrum of some 5-substituted derivatives was found to extend to the visibleregion.
Jacek Wierzchowski, Andrzej Rykowski, Mariusz Mojzych   +2 more
doaj   +2 more sources

Regio- and Diastereoselective 1,3-Dipolar Cycloadditions of 1,2,4-Triazin-1-ium Ylides: a Straightforward Synthetic Route to Polysubstituted Pyrrolo[2,1-f][1,2,4]triazines. [PDF]

ACS Omega, 2022
A synthetic strategy to pyrrolo­[2,1-f]­[1,2,4]­triazines is reported. We show that various synthetically easily accessible 1,2,4-triazines can be efficiently alkylated under mild conditions to provide the corresponding 1-alkyl-1,2,4-triazinium salts ...
Galeta J, Šlachtová V, Dračínský M, Vrabel M.   +3 more
europepmc   +2 more sources

4-Hydroxy-3-nitro-1,4-dihydrotriazolo[5,1-c][1,2,4]triazines: synthesis, antiviral activity, and electrochemical characteristics. [PDF]

Russ Chem Bull, 2022
A new method for preparation of 4-hydroxy-3-nitro-1,4-dihydrotriazolo[5,1-c][1,2,4]-triazines using 1-nitro-2-morpholinoethylene and 3-diazo-1,2,4-triazoles is proposed.
Drokin RA, Fesenko EA, Mozharovskaia PN, Medvedeva MV, Svalova TS, Kozitsina AN, Esaulkova YL, Volobueva AS, Zarubaev VV, Rusinov VL.   +9 more
europepmc   +2 more sources

Synthesis and evaluation of the antioxidant activity of new spiro-1,2,4-triazine derivatives applying Ag/Fe3O4/CdO@MWCNT MNCs as efficient organometallic nanocatalysts

Frontiers in Chemistry, 2022
We applied the Petasites hybridus rhizome water extract as green media so that Ag/Fe3O4/CdO@ multi-walled carbon nanotubes magnetic nanocomposites (Ag/Fe3O4/CdO@MWCNTs MNCs) could be prepared.
Elham Ezzatzadeh, Somayeh Soleimani-Amiri, Zinatossadat Hossaini, Khatereh Khandan Barani   +3 more
doaj   +1 more source

Xanthone-1,2,4-triazine and Acridone-1,2,4-triazine Conjugates: Synthesis and Anticancer Activity

Pharmaceuticals, 2023
A total of 21 novel xanthone and acridone derivatives were synthesized using the reactions of 1,2,4-triazine derivatives with 1-hydroxy-3-methoxy-10-methylacridone, 1,3-dimethoxy-, and 1,3-dihydroxanthone, followed by optional dihydrotiazine ring aromatization.
Sougata Santra, Ainur D. Sharapov, Ramil F. Fatykhov, Anastasya P. Potapova, Igor A. Khalymbadzha, Maria I. Valieva, Dmitry S. Kopchuk, Grigory V. Zyryanov, Alexander S. Bunev, Vsevolod V. Melekhin, Vasiliy S. Gaviko, Andrey A. Zonov   +11 more
openaire   +4 more sources

The discovery of pyridinium 1,2,4-triazines with enhanced performance in bioconjugation reactions. [PDF]

Chem Sci, 2017
A novel class of pyridinium 1,2,4-triazines with excellent properties for use in bioconjugation reactions was discovered from a systematic kinetic study.
Siegl SJ, Dzijak R, Vázquez A, Pohl R, Vrabel M.   +4 more
europepmc   +2 more sources