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Mostrando 481 - 500 Resultados de 4,819 Para Buscar 'Pirimidina~', tiempo de consulta: 5.17s Limitar resultados
  1. 481
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    9-Ethyl-3-(imidazo[1,2-a]pyrimidin-3-yl)-9H-carbazole
  2. 482
    por Lehmler, Hans-Joachim, Parkin, Sean
    Publicado 2008
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    5-Fluoro-1-(penta­noyl)pyrimidine-2,4(1H,3H)-dione
  3. 483
    “…In the title compound, [CuCl(2)(C(4)H(4)N(2)O)(H(2)O)], the Cu(II) cation is coordinated by two chloride anions, one pyrimidin-2-one N atom and one water mol­ecule, giving a slightly distorted square-planar geometry. …”
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    cis-Aqua­dichlorido[pyrimidin-2(1H)-one-κN (3)]copper(II)
  4. 484
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    4,6-Dimethyl­pyrimidin-2(1H)-one–urea–water (1/1/1)
  5. 485
    “…The title compound, C(16)H(11)BrClN(3), contains pairs of mol­ecules lying about inversion centers linked by amino–pyrimidine N—H⋯N hydrogen bonds. The eight-membered rings thus formed are represented by the R (2) (2)(8) motif in graph-set notation. …”
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    4-(4-Bromo­phen­yl)-6-(4-chloro­phen­yl)­pyrimidin-2-ylamine
  6. 486
    “…In the title compound, C(15)H(14)N(4), the pyrido[2,3-d]pyrimidine system is almost ideally planar (r.m.s. deviation 0.028 Å) with its mean plane almost orthogonal to the 2,6-dimethyl­phenyl plane. …”
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    6-(2,6-Dimethyl­phen­yl)pyrido[2,3-d]pyrimidin-7-amine
  7. 487
    por Wang, Yan-Ping, Li, Jian, Dong, Hua-Ze
    Publicado 2009
    “…The asymmetric unit of the title compound, [Mg(H(2)O)(6)](C(9)H(6)N(3)O(3)S)(2)·4H(2)O, contains half of a centrosymmetric cation, one 4-(3-pyrid­yl)pyrimidin-2-sulfonate anion and two solvent water mol­ecules. …”
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    Hexaaqua­magnesium(II) bis­[4-(3-pyrid­yl)pyrimidine-2-sulfonate] tetra­hydrate
  8. 488
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    N-(4,6-Dimethyl­pyrimidin-2-yl)-4-(oxolan-2-ylamino)benzene­sulfonamide
  9. 489
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    4,6-Bis[5-methyl-3-(trifluoro­meth­yl)pyrazol-1-yl]pyrimidine
  10. 490
    “…In the title compound, C(11)H(9)IN(4)O, the dihedral angle between the pyrazole and pyrimidine rings is 6.30 (16)°. In the crystal, weak C—H⋯O inter­actions link the mol­ecules.…”
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    4-(But-3-yn­yloxy)-6-(4-iodo-1H-pyrazol-1-yl)pyrimidine
  11. 491
    “…In the crystal, mol­ecules are joined into a three-dimensional supra­molecular network via effective π–π stacking between adjacent heterocycles [centroid–centroid distances of 3.700 (3)–4.118 (4) Å between adjacent inter­layer pyrimidine rings and 3.676 (4) Å between the pyridine rings].…”
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    Tris{2-[4-(2-pyrid­yl)pyrimidin-2-ylsulfan­yl]eth­yl}amine
  12. 492
    por Li, Lei, Xu, Gang, Zhu, Hai-Bin
    Publicado 2009
    “…In the title complex, [Cu(C(9)H(6)N(3)O(3)S)(2)(H(2)O)(4)]·2H(2)O, the Cu(II) atom lies on an inversion centre and is coordinated by four water mol­ecules in equatorial positions and two N atoms from two 4-(4-pyrid­yl)pyrimidine-2-sulfonate ligands in apical positions. …”
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    Tetra­aqua­bis[4-(4-pyrid­yl)pyrimidine-2-sulfonato]copper(II) dihydrate
  13. 493
    por Zhu, Hai-Bin
    Publicado 2010
    “…In the title compound, {[Ag(C(9)H(6)N(3)O(3)S)]·H(2)O}(n), the Ag(I) atom is coordinated by three N atoms and two sulfonate O atoms from two different 4-(2-pyrid­yl)pyrimidine-2-sulfonate ligands. The ligand bridges two Ag(I) atoms, forming a polymeric zigzag chain propagating parallel to [001]. …”
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    catena-Poly[[silver(I)-[μ-4-(2-pyrid­yl)­pyrimidine-2-sulfonato]] monohydrate]
  14. 494
    “…The reaction of 2,4-dichloro-5-(trifluoro­meth­yl)pyrimidine with 1H-pyrazole gave two structural isomers in a 1:1 ratio that were separable by chromatography. …”
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    2-Chloro-4-(1H-pyrazol-1-yl)-5-(trifluoro­meth­yl)pyrimidine
  15. 495
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    (2S,4S)-3-Acryloyl-6-oxo-2-phenyl­perhydro­pyrimidine-4-carboxylic acid
  16. 496
    “…In the crystal, the 6-(trifluoro­meth­yl)pyrimidine-2,4(1H,3H)-dione and water mol­ecules are linked by N—H⋯O and O—H⋯O hydrogen bonds. …”
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    6-(Trifluoro­meth­yl)pyrimidine-2,4(1H,3H)-dione monohydrate
  17. 497
    “…Photocycloaddition between two adjacent bases in DNA produces a cyclobutane pyrimidine dimer (CPD), which is one of the major UV-induced DNA lesions, with either the cis-syn or trans-syn structure. …”
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    Photosensitized [2 + 2] cycloaddition of N-acetylated cytosine affords stereoselective formation of cyclobutane pyrimidine dimer
  18. 498
    “…The role of this protein is considered critical for the maintenance of pyrimidine nucleotide pool profile and for the metabolism of pyrimidine analogs in cells, based on the in vitro study of partially purified enzyme and recombinant protein. …”
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    UMP/CMPK Is Not the Critical Enzyme in the Metabolism of Pyrimidine Ribonucleotide and Activation of Deoxycytidine Analogs in Human RKO Cells
  19. 499
    por Jiang, Yan-Ke, Hou, Gui-Ge
    Publicado 2011
    “…In the pyrimidine mol­ecule, the imidazole ring is twisted with respect to the pyrimidine ring at a dihedral angle of 25.73 (7)°. …”
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    Benzene-1,4-diol–5-(1H-imidazol-1-yl)pyrimidine (1/1)
  20. 500
    “…In the title compound, C(13)H(12)N(4)S, an amino N atom is connected to a 1,3-benzothia­zole fused-ring system and a dimethyl-substituted pyrimidine ring, these components being aligned [inter­planar dihedral angle = 1.9 (1)°]. …”
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    N-(4,6-Dimethyl­pyrimidin-2-yl)-1,3-benzothia­zol-2-amine
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