Results 1 to 10 of about 33,932 (254)

Nifedipine–pyrazine (2/1) [PDF]

Acta Crystallographica Section E, 2010
In the title compound, 2C17H18N2O6·C4H4N2 [systematic name: 3,5-dimethyl 2,6-dimethyl-4-(2-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate–pyrazine (2/1)], the complete pyrazine molecule is generated by crystallographic inversion ...
Nate Schultheiss, Melanie Roe, Jared P. Smit   +2 more
doaj   +3 more sources

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

Molecules, 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 ...
Robert W. Huigens, Beau R. Brummel, Srinivasarao Tenneti, Aaron T. Garrison, Tao Xiao   +4 more
doaj   +3 more sources

Molecular structures and in Silico molecular docking of new pyrazine-based heterocycles as antibacterial agents [PDF]

BMC Chemistry
Compound 2-(2-cyanoacetamido)pyrazine (3) serves as a key precursor for synthesizing various new pyrazine-linked heterocycles, including pyridine, thiazole, pyrazole, chromene, and pyrazolotriazine derivatives.
Mohamed R. Elmorsy, Sara H. Yousef, Ehab Abdel-Latif, Safa A. Badawy   +3 more
doaj   +2 more sources

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

Shipin 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]

Journal 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, A. H. BEDAIR, F. A. EID, A. F. EL-HADDAD, A. M. ADAWY EL-DEEB, M. EL-SHERBINY   +5 more
doaj   +3 more sources

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

Energies, 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, Thanh Chung Pham, Yeonghwan Choi, Seah Yang, Hyun-Seock Yang, Sung Heum Park, Mijeong Kang, Songyi Lee   +7 more
doaj   +1 more source

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

Molecules, 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, Hong-Yan Guo, Zhe-Shan Quan, Qing-Kun Shen, Xiaoting Li, Tian Luan   +5 more
doaj   +1 more source

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

Foods, 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, Xiaoru Chen, Jun Huang, Suyi Zhang, Hui Qin, Yi Dong, Chao Wang, Xiaojun Wang, Chongde Wu, Yao Jin, Rongqing Zhou   +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

International 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

Diethyl pyrazine-2,5-dicarboxylate [PDF]

Acta Crystallographica Section E Structure Reports Online, 2012
The mol-ecule of the title compound, C(10)H(12)N(2)O(4), is located around an inversion center. The carboxyl-ate groups are twisted slightly with respect to the pyrazine ring, making a dihedral angle of 2.76 (19)°. In the crystal, mol-ecules are stacked along the c axis via weak C-H⋯O hydrogen bonds.
Chuan-Hui Li, Wen-Shi Wu, Yu-Min Huang
openaire   +3 more sources