Results 1 to 10 of about 13,090 (233)

Pyrazine and Phenazine Heterocycles: Platforms for Total Synthesis and Drug Discovery

open access: yesMolecules, 2022
There are numerous pyrazine and phenazine compounds that demonstrate biological activities relevant to the treatment of disease. In this review, we discuss pyrazine and phenazine agents that have shown potential therapeutic value, including several ...
Srinivasarao Tenneti   +2 more
exaly   +3 more sources

Dissecting the Relationship between Microbial Community Succession and Pyrazine Metabolite Synthesis in Nongxiangxing Daqu [PDF]

open access: yesShipin Kexue, 2023
The correlation between the stages of pyrazine synthesis and the microbial flora during the making of Nongxiang Daqu was analyzed, and the effect of microbial interactions on the synthesis of pyrazine during Daqu making was explored.
CHEN Yingqi, CHEN Jie, ZHOU Yaojin, LI Zijian, TANG Shichao, ZHAO Yuchuan, LUO Huibo, HUANG Dan
doaj   +1 more source

Pyrazine-2-substituted carboxamide derivatives: synthesis, antimicrobial and Leuconostoc mesenteroides growth inhibition activity [PDF]

open access: yesJournal of the Serbian Chemical Society, 2006
Condensation of pyrazine-2,3-dicarboxylic acid anhydride with aminoacetophenones gave the corresponding N-(acetylphenyl)pyrazine-2-carboxamide. Their reactions with some electrophilic (carbonyl group, bromine) and nucleophilic (malononitrile, hydrazine ...
A. H. F. ABD EL-WAHAB   +5 more
doaj   +3 more sources

Syntheses and Photovoltaic Properties of New Pyrazine-Based Organic Photosensitizers for Dye-Sensitized Solar Cells

open access: yesEnergies, 2022
Three novel pyrazine-based organic photosensitizers denoted as TPP, TPPS, and TPPF were synthesized for dye-sensitized solar cell (DSSC) studies. Chemical structures of the pyrazine-based photosensitizers were designed with pyrazine derivatives as ...
Mi-Ra Kim   +7 more
doaj   +1 more source

Natural Products–Pyrazine Hybrids: A Review of Developments in Medicinal Chemistry

open access: yesMolecules, 2023
Pyrazine is a six-membered heterocyclic ring containing nitrogen, and many of its derivatives are biologically active compounds. References have been downloaded through Web of Science, PubMed, Science Direct, and SciFinder Scholar.
Guo-Qing Chen   +5 more
doaj   +1 more source

Mechanism of Enhancing Pyrazines in Daqu via Inoculating Bacillus licheniformis with Strains Specificity

open access: yesFoods, 2023
Despite the importance of pyrazines in Baijiu flavor, inoculating functional strains to increase the contents of pyrazine in Daqu and how those interact with endogenic communities is not well characterized.
Qiuxiang Tang   +10 more
doaj   +1 more source

Experimental, DFT and QSAR models for the discovery of new pyrazines corrosion inhibitors for steel in oilfield acidizing environment

open access: yesInternational Journal of Electrochemical Science, 2020
Eight (8) pyrazine derivatives were tested as mild steel corrosion inhibitors in a simulated oil field acidizing environment. Immersion tests and DFT calculations were adopted for the study. Immersion tests were carried out at 0.2 wt.
I.B. Obot, S.A. Umoren
doaj   +1 more source

Tight-Binding Approach to Pyrazine-Mediated Superexchange in Copper–Pyrazine Antiferromagnets [PDF]

open access: yesInorganic Chemistry, 2021
We investigate the cause of spatial superexchange anisotropy in a family of copper-based, quasi-two-dimensional materials with very similar geometries. The compounds in this family differ mainly in their inter-layer separation but they have very different magnetic interactions, even within the basal plane.
E. P. Kenny, A. C. Jacko, B. J. Powell
openaire   +5 more sources

Novel Pyrazine-Bridged D-A-D Type Charge Neutral Probe for Membrane Permeable Long-Term Live Cell Imaging

open access: yesFrontiers in Chemistry, 2021
A novel donor–acceptor–donor (D-A-D) type compound containing pyrazine as the acceptor and triphenylamine as the donor has been designed and synthesized.
Pei Liu   +8 more
doaj   +1 more source

QSAR Studies and Structure Property/Activity Relationships Applied in Pyrazine Derivatives as Antiproliferative Agents Against the BGC823

open access: yesActa Chimica Slovenica, 2021
Electronic structures, the effect of the substitution, structure physicochemical property/activity relationships and drug-likeness applied in pyrazine derivatives, have been studied at ab initio (HF, MP2) and B3LYP/DFT (density functional theory) levels.
Fatima Soualmia   +6 more
doaj   +1 more source

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