Results 11 to 20 of about 68,807 (327)
Synthesis of Pyrimidines and Condensed Pyrimidines [PDF]
Bulletin of the Chemical Society of Japan, 1973 Abstract A new one-step synthesis of pyrimidines and condensed pyrimidines by heating carboxamides or cyclic lactams with formamide in the presence of POCl3 in a sealed tube is described.
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Synthesis of pyrimidines using nano-NiZr4 (PO4)6 as a retrievable and robust heterogeneous catalyst [PDF]
Nanochemistry Research, 2020 Nano-NiZr4 (PO4)6 has been used as an effective and retrievable heterogeneous catalyst for the synthesis of pyrimidines through the reaction of benzaldehydes, guanidinehydrochloride and malononitrile under reflux conditions in ethanol.
Hossein Shahbazi-Alavi +1 more
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Beilstein Journal of Organic Chemistry, 2020 We report that phenacyl azides are key compounds for a regiodivergent synthesis of valuable, functionalized imidazole (32–98% yield) and pyrimidine derivatives (45–88% yield), with a broad substrate scope, when using deep eutectic solvents [choline ...
Paola Vitale +5 more
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Future Journal of Pharmaceutical Sciences, 2016 Pyrazolo pyrimidines are fused heterocyclic ring systems which known as bioisosteres of adenine, that are necessary for every aspect of cell life. Pyrazolo[1,5-a]pyrimidines derivatives have been explored for their inhibitory activity towards a variety ...
Nasser S.M. Ismail +3 more
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Downy mildew resistance and genetic variability in a wild rocket germplasm collection
Agronomy Journal, Volume 114, Issue 6, Page 3083-3095, November/December 2022., 2022 Abstract One hundred accessions of a “core collection” of Diplotaxis tenuifolia (L.) DC. and Eruca spp. were screened at seedling stage for resistance to downy mildew. Accessions tested at the seedling stage were assigned to 0–6 interaction phenotypes.
Paula S. Coelho +5 more
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Synthesis of 4-amino-5-fluoropyrimidines and 5-amino-4-fluoropyrazoles from a β-fluoroenolate salt
Beilstein Journal of Organic Chemistry, 2020 A synthesis of fluorinated pyrimidines under mild conditions from amidine hydrochlorides and the recently described potassium 2-cyano-2-fluoroethenolate was developed. A broad substrate scope was tested and mostly excellent yields were obtained.
Tobias Lucas +2 more
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PURINE AND PYRIMIDINE ANTAGONISM IN A PYRIMIDINE-DEFICIENT MUTANT OF NEUROSPORA [PDF]
Journal of Biological Chemistry, 1948 The present study is concerned with the inhibition of growth of the pyrimidine-deficient Neurospora mutant, No. 1298, by the naturally occurring purine ribonucleotides and ribonucleosides. This experimentally produced strain, unlike the wild type, is unable to synthesize the pyrimidine ribonucleosides on a medium containing inorganic salts ...
Pierce, John G., Loring, Hubert S.
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American Journal of Medical Genetics Part A, Volume 191, Issue 1, Page 234-237, January 2023., 2023 Abstract Adenylosuccinase deficiency is a rare inborn error of metabolism. We present a newborn who died at 52 days of age with clinical features suggestive of severe epileptic encephalopathy and leukodystrophy of unknown cause. Post‐mortem examination showed an unusual vacuolar appearance of the brain.
Spatikha Sitaram +11 more
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CuO/ZnO@N-GQDs@NH2 nanocomposite as superior catalyst for the synthesis of pyrimidine-triones [PDF]
Nanochemistry Research, 2021 CuO / ZnO@N - GQDs@NH2 nanocomposite (copper (II) oxide / zinc oxide @ Nitrogen-doped graphene quantum dots @ aminated) as superior catalyst has been applied for the synthesis of pyrimidine - trions by three-component reactions of N, N ...
Hossein Shahbazi-Alavi +2 more
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SPIRO-PYRIMIDINES. II. CYCLOHEXANE-1,5-SPIRO-PYRIMIDINES. [PDF]
Journal of the American Chemical Society, 1921 n ...
Dox, Arthur W., Yoder, Lester
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