Results 111 to 120 of about 29,220 (210)

Synthesis of C-(β-D-glucosaminyl)-1,2,4-triazines

, 2018
In my diploma thesis I studied the syntheses of C-glucosaminyl-1,2,4-triazines and 1,2,4-triazin-5(4H)-ones. For the preparation of the target heterocycles C-(2-deoxy-2-phthalimido-3,4,6-tri-O-acetyl-β-D-glucopyranosyl)formamidrazone was prepared first ...
Hashimov, Mahir
core  

Cascade reactions of substituted 1,2,4-triazines: rapid access to nitrogen-containing polycycles

, 2004
A new and straightforward methodology for the construction of complex nitrogen-containing polycycles has been developed. This methodology exploits easily prepared 1,2,4-triazines as substrates for a pericyclic reaction cascade, forming the polycycles in ...
Raw, S.A., Taylor, R.J.K.
core   +1 more source

Bioinspired Pyrano[2,3-f]chromen-8-ones: Ring C-Opened Analogues of Calanolide A: Synthesis and Anti-HIV-1 Evaluation

Biomimetics
We have designed and synthesized a series of bioinspired pyrano[2,3-f]coumarin-based Calanolide A analogs with anti-HIV activity. The design of these new calanolide analogs involved incorporating nitrogen heterocycles or aromatic groups in lieu of ring C,
Igor A. Khalymbadzha, Ramil F. Fatykhov, Ilya I. Butorin, Ainur D. Sharapov, Anastasia P. Potapova, Nibin Joy Muthipeedika, Grigory V. Zyryanov, Vsevolod V. Melekhin, Maria D. Tokhtueva, Sergey L. Deev, Marina K. Kukhanova, Nataliya N. Mochulskaya, Mikhail V. Tsurkan   +12 more
doaj   +1 more source

Design, Synthesis, and Antimicrobial Evaluation of New Annelated Pyrimido[2,1-c][1,2,4]triazolo[3,4-f][1,2,4]triazines. [PDF]

Molecules, 2020
El Azab IH, Elkanzi NAA.
europepmc   +1 more source

A CONVENIENT AND GENERAL SYNTHESIS OF THIADIAZOLO [2,3-C] [1,2,4] TRIAZINES [PDF]

Journal of Sciences, Islamic Republic of Iran, 1999
Condensation and cyclization of 5-hydroxy- 1,2,4- thiadiazol-2-yl hydrazine 1 with pyruvic acid, phenacyl bromide, propargyl bromide and ally1 bromide afforded compounds 2,5,7 3, 4 ,6 and 8 respectively, Reaction of 1 with epichforohydrine afforded 4 ...
doaj  

Synthesis, biological activity and molecular modeling study of novel 1,2,4-triazolo[4,3-b][1,2,4,5]tetrazines and 1,2,4-triazolo[4,3-b][1,2,4]triazines. [PDF]

Sci Rep, 2020
El-Reedy AAM, Soliman NK.
europepmc   +1 more source

Synthesis and crystal structures of 6- and 8-methyl-3-phenyl-benzo[<i>e</i>][1,2,4]triazines. [PDF]

Acta Crystallogr E Crystallogr Commun
Constantinides CP, Raza S, Bazzi F, Sharara N, Marincean S.   +4 more
europepmc   +1 more source

General Synthesis of 1-Aryl-6-azaisocytosines and Their Utilization for the Preparation of Related Condensed 1,2,4-Triazines. [PDF]

Molecules, 2019
Zálešák F, Slouka J, Stýskala J.
europepmc   +1 more source

Efficient photoreduction of triazines with aliphatic amines

, 2002
Aliphatic amines are used as powerful electron donators in electrontransfer reactions of electronically excited aromatic amines. In triazines the LUMO energy is decreased compared to benzene, therefore these electron-poor compounds are easily reduced and
Dittmann, Andrea
core  

Synthesis, Properties, and Biological Activity Evaluation of Some Novel Naphtho[2,1-e]pyrazolo[5,1-c][1,2,4]triazines. [PDF]

Int J Mol Sci
Burcă I, Bercean VN, Rusu GI, Pop R, Diaconescu AM, Badea V, Péter F.   +6 more
europepmc   +1 more source