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Comparative Evaluation of Puffing Effects on Physicochemical and Volatile Profiles of Brown and Refined Rice. [PDF]
Liu X +10 more
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Proceedings of the Royal Society of London. Series B: Biological Sciences, 1990
Of the various types of alerting signals found in nature, odours are the least well understood. The worldwide distribution of pyrazines in plants, insects, terrestrial vertebrates, marine organisms, fungi and bacteria suggests that they are of special significance.
A, Woolfson, M, Rothschild
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Of the various types of alerting signals found in nature, odours are the least well understood. The worldwide distribution of pyrazines in plants, insects, terrestrial vertebrates, marine organisms, fungi and bacteria suggests that they are of special significance.
A, Woolfson, M, Rothschild
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2,3,5,6-Tetrakis(phenoxymethyl)pyrazine and 2,3,5,6-tetrakis(phenylsulfanylmethyl)pyrazine
Acta Crystallographica Section C Crystal Structure Communications, 2007The title compounds, C(32)H(28)N(2)O(4), (I), and C(32)H(28)N(2)S(4), (II), respectively, are tetrasubstituted pyrazines and both possess C(i) symmetry. They differ only in the hetero atom (X) of the -CH(2)XPh side-arm substituents: X = O in (I) and S in (II).
Tokouré, Assoumatine +2 more
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On the pyrazine and pyrazine–pyrimidine dimers
The Journal of Chemical Physics, 1986Spectra of the pyrazine-d4, pyrazine-h4–pyrazine-d4, and pyrazine-d4–pyrimidine dimer are obtained and analyzed with the help of Lennard-Jones–hydrogen-bonding (LJ–HB) potential energy calculations. The pyrazine isotopic hetero and homo dimers possess nearly identical spectra with the exception that the perpendicular dimer features are displaced to the
J. Wanna, E. R. Bernstein
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Pyrazine Analogues of Dipyrrolylquinoxalines
Organic Letters, 2003[structure: see text]. The synthesis of novel pyrazine derivatives bearing pyrrolic substituents is reported; the ability of these systems to bind certain biologically relevant anions in dichloromethane is also detailed.
Jonathan L, Sessler +3 more
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Vibrational spectra of [1H4]pyrazine and [2H4]pyrazine
Journal of the Chemical Society, Faraday Transactions 2, 1985Infrared and Raman spectra of [1H4]pyrazine and [2H4]pyrazine have been reinvestigated and a general assignment of all the observed bands is proposed which modifies some previous assignments of fundamental vibrations. The present assignment satisfies the isotopic product rule for i.r.- and Raman-active fundamentals.
Juan F. Arenas +4 more
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Microbial metabolism of pyrazines
Critical Reviews in Microbiology, 2011Pyrazines are a group of 1,4 dinitrogen substituted benzenes. They have near ubiquitous biological distribution and majority are anthropogenic. The demand for pyrazines in the recent years has increased owing to their vast applications in the field of food, agriculture and medicine.
K S, Rajini +3 more
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Synthesis of tetrasubstituted pyrazines and pyrazine N-oxides
Tetrahedron Letters, 2010Abstract An efficient synthesis of tetrasubstituted unsymmetrical pyrazines and their related pyrazine N-oxides has been developed from commercially available 2-chloro-3-methylpyrazine. The procedure and scope of these synthesis routes are described.
Jae Uk Jeong +3 more
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ChemInform Abstract: Pyrazine. Syntheses of Naturally Occurring Pyrazines
ChemInform, 1997AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
A. OHTA, Y. AOYAGI
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