Examples of 'pyrazine' in a sentence
Meaning of "pyrazine"
pyrazine (noun) - a chemical compound commonly found in foods and beverages, known for its nutty, earthy, or roasted flavor
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- A diazine in which the two nitrogen atoms are in the para- positions; many of its derivatives are pharmaceuticals.
How to use "pyrazine" in a sentence
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pyrazine
The pyrazine scaffold lacks a pyridine substituent.
Examples of such groups are pyridine and pyrazine.
The desirable pyrazine is then added back.
Pyrazine compounds for the treatment of infectious diseases.
Compounds of the invention are generally characterized as pyrazine derivatives.
Numerous phenyl pyrazine derivatives are known in the prior art.
The compounds described herein can contain a pyrazine or pyridazine ring.
Pyrazine derivatives and their use in the treatment of neurological disorders.
Processes for preparing the pyrazine derivatives are also described.
A background reading of fluorescence was obtained prior to administration of the pyrazine agent.
The pyrazine is reacted with the tartaric acid in an inert polar solvent.
Pteridine is an aromatic chemical compound composed of fused pyrimidine and pyrazine rings.
A dihydropyrazine intermediate is formed but is readily oxidized with oxygen to the pyrazine.
Thus preferably the central ring is an optionally substituted pyrimidine or pyrazine ring.
The present invention relates to novel pyrazine derivatives and salts thereof.
See also
Pyridine and pyrazine derivative for the treatment of chronic obstructive pulmonary disease.
The present invention relates to a series of pyrazine derivatives which are sodium channel blockers.
Fluorescent pyrazine derivatives and methods of using the same in assessing renal function.
Many methods exist for the organic synthesis of pyrazine and its derivatives.
Monoprotonated pyrazine cations with both orientations can coexist at potentials between these limits.
The compound contains chains of copper ions linked by bidentate bridging pyrazine ligands.
The hexanal content and the pyrazine content were measured for various samples.
Pyrazine compounds and guaiacol compounds on the other hand are semi volatile flavor compounds.
The present invention provides pyrazine derivatives that inhibit tyrosine kinase activity.
A precipitate was present which is probably the HCL salt of the pyrazine acid chloride.
We have synthesised various kinds of pyrazine derivatives and have screened their pharmacological activities.
Particularly preferred is for het3 to be pyrazine.
Pyridine and pyrazine derivative for the treatment of CF.
Examples of 6 membered heteroaryl rings include pyridine, pyrimidine and pyrazine.
Examples of such pyrazine derivates are those represented by Formulas I and II above.
Examples of such rings include pyrimidine, pyrazine and triazine rings.
Pyrazine derivatives, their preparation and medicaments containing them.
A kit according to claim 9, characterized in that the enhancer is pyrazine carboxylic acid.
Pyrazine is less basic in nature than pyridine, pyridazine and pyrimidine.
Pharmaceutical composition comprising pyrazine derivative, and method of using pyrazine derivative in combination.
The residue and oxidation resistant etchant of claim 4 wherein said diazine is pyrazine.
A process according to claim 10 wherein the distilled trialkyl pyrazine is purified by vacuum distillation.
Even more preferred pyrazine derivatives according to the invention are those compounds selected from,.
A composition according to claim 6, characterized in that the enhancer is pyrazine or pyrazine carboxylic acid.
As a result, it has been found that pyrazine carboxamide derivatives have an anti-influenza virus activity.
A heteroaromatic compound exhibits aromaticity such as that displayed by a pyridine, pyrimidine, pyrazine or indole.
Among these compounds, ones having a pyrazine ring as a main nucleus have not been much reported.
Preferable condensed heterocycles include heterocycles condensed with a benzene, thiophene, indole, pyrazine or pyrazole ring.
The pyrazine derivatives of the invention have been found to possess specificity for GSK3.
Examples of such compounds include brighteners derived from pyrazine and brighteners derived from 4-aminonaphthalamide.
The X-substituent may be at either of the two positons in the pyrazine ring.
A pyrazine derivative of the general formula wherein R ₁ represents an octyl group or a pivaloyloxymethyl group.
The particles are typically the reaction product of calcium iodide, iodine and pyrazine dicarboxylic acid.
Certain pyrazine derivatives are selective inhibitors of vascular endothelial growth factor ( VEGF ) receptor tyrosine kinase.
The present invention relates to pyrimidine, triazine and pyrazine derivatives of the general formula wherein.
