Patent EP2751106A1 - Pyrimidines annelées substituées et ...
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Jul 9, 2014 - La présente invention concerne de nouvelles pyrimidines annelées substituées, leur procédé de fabrication, leur utilisation seules ou dans des ..

Method for production of aryl-substituted annelated pyrimidines

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Note added at 17 hrs (2016-01-12 12:48:26 GMT)
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désolé, mais ce n'est "concentrated pyrimidine" solution

"ROLE OF VITAMIN Blz IN NUCLEIC ACID METABOLISM In ...
www.jbc.org/content/220/2/513.full.pdf
Journal of Biological Chemistry
by M Downing - ‎1956 - ‎Cited by 16 - ‎Related articles
by passing the concentrated pyrimidine deoxynucleotide solution at pH 2 through the cation exchange column and eluting with 0.002 N HCI. A summary of these ..."

"annealed" = qui forme des anneaux :

"the UV–Vis spectrum of the free-ligand, see Fig. S5.
X-ray structure analysis revealed that complex 1 crystallized as the
toluene monosolvate in the P21/n space group [12]. The crystal lattice
is stabilized by a series of intermolecular interactions [at 4.034 Å]
between the co-planar conventional chromone moieties while similar
interactions [at 3.674 Å] are found between co-planar chromone moie-
ties modified with respective annealed pyrimidine rings, see Fig. S6. The
lattice is further stabilized by π–π intermolecular interactions [at
3.483 Å] between the modified chromone moieties and toluene
molecules. Ultimately, these intermolecular interactions lead to one-
dimensional columns aligned with the c-axis."
A rhenium(I) compound bearing a dimerized chromone NO ...
https://www.researchgate.net/.../5628be8908ae22b1702ed196.pd...