Results 81 to 90 of about 45,356 (184)

Preparation and antitumor effects of 4-amino-1,2,4-triazole Schiff base derivative

Journal of International Medical Research, 2020
Objectives The purpose of this paper was to synthesize 4-amino-1,2,4-triazole Schiff base derivative and to evaluate its antitumor activity. Methods 2,4,6-Tris (4-formylphenoxy)-1,3,5-triazine was synthesized by nucleophilic substitution with reaction of
Guo-wei Jiang, Qing Chang, Dong-yu Liang, Yu-ting Zhang, Yong-jun Meng, Qing-qing Yi   +5 more
doaj   +1 more source

The activity of pyrazolo[4,3-e][1,2,4]triazine and pyrazolo[4,3-e]tetrazolo[1,5-b][1,2,4]triazine sulphonamide derivatives in monolayer and spheroid breast cancer cell cultures

Journal of Enzyme Inhibition and Medicinal Chemistry
In the last decade, an increasing interest in compounds containing pyrazolo[4,3-e][1,2,4]triazine moiety is observed. Therefore, the aim of the research was to synthesise a novel sulphonyl pyrazolo[4,3-e][1,2,4]triazines (2a, 2b) and pyrazolo[4,3-e ...
Anna Szymanowska, Dominika Radomska, Robert Czarnomysy, Mariusz Mojzych, Katarzyna Kotwica-Mojzych, Krzysztof Bielawski, Anna Bielawska   +6 more
doaj   +1 more source

Synthesis of bis[1,2,4]triazolo[4,3-b:1′,5′-d][1,2,4]triazine, a novel polynitrogenated heterocyclic system

, 2017
2-Aryl [1,2,4]triazolo[1,5-d][1,2,4]triazine-5(6H)-thiones were methylated using methyl iodide in the presence of NaOH to give the corresponding 5-methylthio derivatives.
Montazeri, Nasser, Nazari, Niousha, Tajfirooz, Farzaneh, M.Heravi, Majid   +3 more
core   +1 more source

2-Ethoxymethyl-6-ethyl-2,3,4,5-tetrahydro-1,2,4-triazine-3,5-dione [PDF]

, 2012
The 1,2,4-triazine ring of the title compound, C8H13N3O3, is nearly planar (r.m.s. deviation = 0.019 Å). The imino group is hydrogen-bond donor to the exocyclic O atom at the 5-position of an adjacent molecule, the N—H...O ...
Omar A. Al-Deeb, Seik Weng Ng, Nasser R. El-Brollosy, Ali A. El-Emam   +3 more
core   +1 more source

Triazine-Based Conjugated Microporous Polymers for Efficient Hydrogen Production

, 2021
Developing visible-light-active porous organic polymers with high photocatalytic efficiency is highly desirable. Here, two triazine-based conjugated microporous polymers were synthesized. The structures were controllably adjusted to explore the structure–
Yue Zhang (30585), Yingjie Zhao, Yingjie Zhao (107074), Renzeng Chen, Yuancheng Wang (1622419), Wenbo Hao (387710), Yuancheng Wang, Renzeng Chen (8581692), Yue Zhang, Wenbo Hao   +9 more
core   +1 more source

Heteroaromatization with 4-Hydroxycoumarin Part II: Synthesis of Some New Pyrano[2,3-d]pyrimidines, [1,2,4]triazolo[1,5-c]pyrimidines and Pyrimido[1,6-b]-[1,2,4]triazine Derivatives

Molecules, 2001
A variety of novel [1,2,4]triazolo[1,5-c]pyrimidine-13-ones (4a-f) and (5b-d) could be obtained via reaction of 9-amino-7-(4’-chlorophenyl)-8,9-dihydro-8-imino-6H,7H-[1]benzopyrano[3`,4`:5,6]pyrano[2,3-d]pyrimidine-6-one (3) with a variety of ...
A. H. Bedair, A. H. Fakery, N. A. El-Hady, M. S. Abd El-Latif, A. M. El-Agrody   +4 more
doaj   +1 more source

SYNTHETIC STUDIES IN THE 6H-[1,2,4] TRIAZINO [3,4-b] [ 1,3,4] THIADIAZINES [PDF]

Journal of Sciences, Islamic Republic of Iran, 1996
4-Amino-6-methyl- 1,2,4-triazine-3(2H)-thione-5-0ne (1) was condensed with propargyl bromidein the presence of sodium rnethoxide to afford 3-propargylmercapto- 4-arnino-6-rnethyl-1,2,4-triazin-5-one(2) .
doaj  

Germinability of annual bluegrass seed in western Oregon grass seed production systems

Crop, Forage &Turfgrass Management, Volume 12, Issue 1, June 2026.
Clint Mattox, Sebastian Dibblee
wiley   +1 more source

Structures and Chemical Equilibria of Some N-Heterocycles Containing Amide Linkages

Molecules, 2003
Structures and chemical equilibria of 5-carboxy-2-thiouracil (1), 5,6-diphenyl-3-hydroxy-1,2,4-triazine (2), 1-phenyl-3-methyl-5-pyrazolone (3) and 2-mercapto-4,6-dimethylpyrimidine hydrochloride (4) are reported.
N. H. Abd El Moneim, R. H. Ahmed, M. Abd El Zaher Mostafa, M. S. Masoud   +3 more
doaj   +1 more source

Homogeneous and Heterogeneous Approaches to 1,2,4-Triazine-Accelerated Copper-Catalyzed Azide-Alkyne Cycloadditions [PDF]

, 2011
Over the last decade, the domain of click chemistry has grown exponentially and has significantly impacted the fields of organic synthesis, medicinal chemistry, molecular biology, and materials science. The ideal model of a click reaction has become the
Prince, Ashleigh Lauren
core