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  1. 1481
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    Crystal structure and Hirshfeld surface analysis of 6-amino-8-phenyl-1,3,4,8-tetra­hydro-2H-pyrido[1,2-a]pyrimidine-7,9-dicarbo­nitrile
  2. 1482
    por Elangovan, N., Sowrirajan, S.
    Publicado 2021
    “…The Schiff base (E)-4-((2-hydroxy-3,5-diiodobenzylidene)amino)-N-(pyrimidine)-2-yl) benzene sulfonamide (DIDA) compound was synthesis with condensation of 3,5-diiodosalicylaldehyde and sulfadiazine. …”
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    Synthesis, single crystal (XRD), Hirshfeld surface analysis, computational study (DFT) and molecular docking studies of (E)-4-((2-hydroxy-3,5-diiodobenzylidene)amino)-N-(pyrimidine)-2-yl) benzenesulfonamide
  3. 1483
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    Thieno[2,3-d]pyrimidine-2,4(1H,3H)-dione Derivative Inhibits d-Dopachrome Tautomerase Activity and Suppresses the Proliferation of Non-Small Cell Lung Cancer Cells
  4. 1484
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    Development of 1-(4-(Substituted)piperazin-1-yl)-2-((2-((4-methoxybenzyl)thio)pyrimidin-4-yl)oxy)ethanones That Target Poly (ADP-Ribose) Polymerase in Human Breast Cancer Cells
  5. 1485
    “…For the first time, it is highlighted under solvent-free conditions for the catalytic activity in multicomponent synthesis of dihydrotetrazolo[1,5-a]pyrimidines, dihydrotetrazolo[1,5-a]pyrimidine-6-carboxylates and tetrahydrotetrazolo[5,1-b]quinazolinones. …”
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    3-(Propylthio)propane-1-sulfonic acid immobilized on functionalized magnetic nanoparticles as an efficient catalyst for one-pot synthesis of dihydrotetrazolo[1,5-a]pyrimidine and tetrahydrotetrazolo[5,1-b]quinazolinone derivatives
  6. 1486
    “…New compounds with 1H-pyrazolo [3,4-d]pyrimidin-6-amine core scaffolds were synthesized and characterized in vitro to determine their affinity for human A(2A) and A(1) receptors. …”
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    Discovery of Novel Dual Adenosine A(2A) and A(1) Receptor Antagonists with 1H-Pyrazolo[3,4-d]pyrimidin-6-amine Core Scaffold as Anti-Parkinson’s Disease Agents
  7. 1487
    “…[Image: see text] Herein, we have developed a novel synthetic route for the synthesis of chromeno[4,3-d]pyrido[1,2-a]pyrimidin-6-one derivatives 8a-q using an acid ionic liquid [CMMIM][BF(4)(–)] 4 via one-pot, three-component synthesis in aqueous ethanol at room temperature. …”
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    [CMMIM][BF(4)(–)] Ionic Liquid-Catalyzed Facile, One-Pot Synthesis of Chromeno[4,3-d]pyrido[1,2-a]pyrimidin-6-ones: Evaluation of Their Photophysical Properties and Theoretical Calculations
  8. 1488
    “…In the crystal (space group P2(1)/n, Z = 4), the title compound adopts a twisted conformation with a dihedral angle between the benzimidazole and pyrimidine mean planes of 84.11 (3)°. The carboxyl­ate group and the 5-methyl group on the pyrimidine ring exhibit partial disorder. …”
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    Methyl 1-[(6-meth­oxy-5-methyl­pyrimidin-4-yl)meth­yl]-1H-benzo[d]imidazole-7-carboxyl­ate: a combined X-ray and DFT study
  9. 1489
    “…A novel series of naphtho[2',3':4,5]thiazolo[3,2-a]pyrimidine hybrids have been designed, synthesised and evaluated for their topo IIα/EGFR inhibitory and apoptotic inducer activities. …”
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    Novel topoisomerase II/EGFR dual inhibitors: design, synthesis and docking studies of naphtho[2′,3′:4,5]thiazolo[3,2-a]pyrimidine hybrids as potential anticancer agents with apoptosis inducing activity
  10. 1490
    por Deng, Ying, Li, Zhong-Shu, Sun, Bai-Wang
    Publicado 2008
    “…In the dinuclear centrosymmetric copper(II) title compound, [Cu(2)(C(11)H(11)N(2)O(2))(2)Cl(2)(H(2)O)(2)], each Cu(II) ion has a slightly distorted trigonal-bipyramidal geometry and is coordinated by one N and one O atom from one 3-(2-hydroxy­ethyl)-2-methyl-4-oxopyrido[1,2-a]pyrimidin-9-olate ligand, another O atom from the second ligand, one water mol­ecule and one Cl atom. …”
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    Bis[μ-3-(2-hydroxy­ethyl)-2-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-9-olato-κ(3) N,O:O]bis[aquachloridocopper(II)]
  11. 1491
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    3-Phenyl-2-(piperidin-1-yl)-3,5,6,8-tetra­hydro-4H-thio­pyrano[3′,4′:2,3]thieno[5,4-d]pyrimidin-4-one
  12. 1492
    por Bazgir, Ayoob, Faraji, Fereshteh
    Publicado 2008
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    7-(Benzyl­sulfan­yl)-5-(2-methoxy­phen­yl)-1,3-dimethyl-5,6-dihydro­pyrimido[4,5-d]pyrimidine-2,4(1H,3H)-dione
  13. 1493
    “…In the title compound, C(18)H(19)ClN(4)O(3), the dihydro­pyrimidin­one ring adopts a flattened boat conformation. …”
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    Ethyl 4-(5-chloro-3-methyl-1-phenyl-1H-pyrazol-4-yl)-6-methyl-2-oxo-1,2,3,4-tetra­hydro­pyrimidine-5-carboxyl­ate
  14. 1494
    “…In the crystal, the main mol­ecules form centrosymmetric R (2) (2)(8) dimers via pairs of N—H⋯N hydrogen bonds between the amino groups and pyrimidine N atoms. One of the independent methanol mol­ecules and its inversion equivalent are linked to the dimers via O—H⋯N and N—H⋯O hydrogen bonds, forming R (4) (4)(16) graph-set motifs. …”
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    8-Methyl-2-[4-(trifluoro­meth­yl)phen­yl]-8H-pyrazolo­[4,3-e][1,2,4]triazolo[1,5-c]pyrimidin-5-amine methanol disolvate
  15. 1495
    “…In the title compound, C(15)H(12)F(3)N(3)O(3)S, the pyrimidine ring adopts a half-chair conformation with the mean plane formed by the ring atoms excluding the C atom bonded to thio­phene-2-carbonyl group lying nearly perpendicular to the pyridine and thio­phene rings, making dihedral angles of 84.91 (4) and 87.40 (5)°, respectively. …”
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    6-Hy­droxy-4-(pyridin-3-yl)-5-(2-thienyl­carbon­yl)-6-trifluoro­meth­yl-3,4,5,6-tetra­hydro­pyrimidin-2(1H)-one
  16. 1496
    por Liang, Xizhen, Zhou, Yueming
    Publicado 2011
    “…In the title compound, C(27)H(33)N(3)OS(2), the dihedral angle between the two fused rings of the thieno[3,2-d]pyrimidine system is 3.73 (9)°. The phenyl ring is twisted with respect to the pyrimidine ring [dihedral angle = 71.60 (10)°] and the thio­pyran ring shows an envelope conformation with the S atom as the flap. …”
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    2-Dicyclo­hexyl­amino-3-phenyl-5,6-di­hydro-8H-thio­pyrano[4′,3′:4,5]thieno[2,3-d]pyrimidin-4(3H)-one
  17. 1497
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    N,N-Diethyl-2-hy­droxy­ethanaminium 2,6-dioxo-5-(2,4,6-trinitro­phen­yl)-1,2,3,6-tetra­hydro­pyrimidin-4-olate dihydrate
  18. 1498
    “…The title compound, [CuCl(2)(C(18)H(18)N(8))]·2CH(3)OH·H(2)O, contains a penta­coordinated Cu(II) atom bonded to the tridentate 4,6-bis­[(E)-1-methyl-2-(pyridin-2-yl­methyl­idene)hydrazin­yl]pyrimidine ligand and two Cl atoms. The geometry around the Cu(II) atom is distorted square-pyramidal. …”
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    {4,6-Bis[(E)-1-methyl-2-(pyridin-2-yl­methyl­idene-κN)hydrazinyl-κN (2)]pyrimidine-κN (1)}dichloridocopper(II) methanol disolvate monohydrate
  19. 1499
    “…The dihydro­pyrimidine ring adopts a flattened boat conformation. …”
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    Ethyl (Z)-2-(2-fluoro­benzyl­idene)-7-methyl-3-oxo-5-phenyl-3,5-dihydro-2H-thia­zolo[3,2-a]pyrimidine-6-carboxyl­ate
  20. 1500
    “…The asymmetric unit of the compound, C(20)H(26)N(2)O(5)·0.5C(2)H(5)OH, consists of two tetra­hydro­pyrimidine-2,4-dione mol­ecules and an ethanol mol­ecule. …”
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    1-[(Cyclo­propyl­meth­oxy)meth­yl]-6-(3,4-dimeth­oxy­benzyl)-5-ethyl-1,2,3,4-tetra­hydro­pyrimidine-2,4-dione ethanol hemisolvate
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