55321-99-8

Usage

Uses

Used in Coordination Chemistry:
3-Hydroxypyrazine-2-carboxamide is used as a ligand in coordination chemistry for its ability to form stable complexes with various metal ions. This application is crucial in crystal engineering, as it helps in the design and synthesis of new materials with specific properties and functions.
Used in Crystal Engineering:
3-Hydroxypyrazine-2-carboxamide is used as a building block in crystal engineering for its ability to create well-defined and organized structures. Its coordination chemistry properties allow for the development of novel materials with tailored properties, such as improved stability, reactivity, or selectivity.
Used in Pharmaceutical Applications:
Although not explicitly mentioned in the provided materials, 3-Hydroxypyrazine-2-carboxamide and its derivatives may also have potential applications in the pharmaceutical industry. Their coordination chemistry properties could be exploited for the development of new drugs or drug delivery systems, targeting specific biological receptors or enzymes.

Synthesis Reference(s)

Journal of the American Chemical Society, 71, p. 78, 1949 DOI: 10.1021/ja01169a023

InChI:InChI=1/C5H5N3O2/c6-4(9)3-5(10)8-2-1-7-3/h1-2H,(H2,6,9)(H,8,10)

Upstream product

• 27825-20-3 methyl 3-oxo-3,4-dihydropyrazine-2-carboxylate 
• 131543-46-9 Glyoxal 
• 62009-47-6 2-aminopropanediamide 
• 39003-51-5 Glyoxal Bis(sodium bisulfite) 
• 20737-42-2 3-oxo-3,4-dihydropyrazine-2-carboxylic acid 

Downstream Products

• 43029-19-2 2-amino-3-hydroxypyrazine 
• 20737-42-2 3-oxo-3,4-dihydropyrazine-2-carboxylic acid 
• 55557-52-3 2-chloro-3-cyanopyrazine 
• 259793-96-9 favipiravir 
• 1257072-34-6 6-bromo-3-chloropyrazine-2-carbonitrile 

Relevant academic research and scientific papers

Synthesis and antiviral evaluation of the 2'-c-methyl branched derivative of a nucleoside analog inhibitor of RNA viral infections, T-1106

An example of a 2'-C-methyl branched nucleoside analogue bearing 3,4-dihydro-3-oxopyrazine-2-carboxamide as the base, namely 4-(2-C-methyl- β-D-ribofuranosyl)-3-oxo-3,4-dihydropyrazine-2-carboxamide, is reported. This compound was synthesized following a Vorbrueggen's glycosylation procedure in a few steps. When evaluated in cell culture experiments against a broad range of viruses, this compound did not exhibit any significant antiviral effect or cytotoxicity.

METHODS FOR PREPARING FAVIPIRAVIR

The present invention provides methods for preparing Favipiravir (6-fluoro-3-hydroxypyrazine-2-carboxamide).

Synthesis process of favipiravir and intermediate thereof

The invention relates to the technical field of medicine synthesis, and in particular, relates to a synthesis process of favipiravir and an intermediate thereof. The synthesis method of favipiravir comprises the following steps: 1) 2-aminopropanediamide and glyoxal serve as raw materials, and generating a compound III through a cyclization reaction; 2) performing benzyl protection on the compoundIII under the catalysis of potassium carbonate to generate a compound IV; 3) performing fluorine substitution on the compound IV under the action of fluorine gas, a solvent and a catalyst to generatea compound V; and 4) performing debenzylation protection on the compound V to generate favipiravir. Compared with other synthetic routes of favipiravir, the synthetic route provided by the invention has the advantages that the whole process route is shortened by virtue of high-selectivity fluorination reaction, the production cost is greatly reduced, and the synthesis process is suitable for industrial production.

6-BROMO-3-HYDROXY-2-PYRAZINECARBOXAMIDE CRYSTAL AND METHOD FOR PRODUCING SAME

The purpose of the present invention is to provide a method for producing 6-bromo-3-hydroxy-2-pyrazinecarboxamide in which the content ratio of impurities is reduced. This production method includes a step of obtaining 6-bromo-3-hydroxy-2-pyrazinecarboxamide crystal having diffraction angles expressed in degrees 20 of 5.5, 20.1, 23.7, 26.7, 27.5, and 28.1° and/or diffraction angles expressed in degrees 2θ of 7.1, 21.4, 25.2, 25.7, 27.1, and 28.8° in powder X-ray diffraction.

3-hydroxy-2-production of pyrazinecarboxamide

PROBLEM TO BE SOLVED: To provide an excellent method for producing 3-hydroxy-2-pyrazinecarboxamide. SOLUTION: This method has characteristics that (1) the reaction temperature is normal temperature, (2) the yield is high, (3) the operation is simple, and the like, and is useful as an industrial production method of 3-hydroxy-2-pyrazinecarboxamide or a salt thereof. COPYRIGHT: (C)2011,JPOandINPIT

NUCLEOSIDES WITH NON-NATURAL BASES AS ANTI-VIRAL AGENTS

A method and composition for treating a host infected with flavivirus, pestivirus or hepacivirus comprising administering an effective fiavivirus, pestivirus or hepacivirus treatment amount of a described base- modified nucleoside or a pharmaceutically acceptable salt or prodrug thereof, is provided.