Materias dentro de su búsqueda.
Mostrando 1,121 - 1,140 Resultados de 4,819 Para Buscar 'Pirimidina~', tiempo de consulta: 4.73s Limitar resultados
  1. 1121
    “…An efficient, versatile, and one-pot method for the preparation of novel fluorinated thiazolo- and oxazolo[3,2-a]pyrimidin-7-ones is described from 2-aminothiazoles or 2-amino-oxazoles and fluorinated alkynoates. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
    Simple and Expedient Access to Novel Fluorinated Thiazolo- and Oxazolo[3,2-a]pyrimidin-7-one Derivatives and Their Functionalization via Palladium-Catalyzed Reactions
  2. 1122
    “…An efficient and general protocol for the synthesis of functionalized 2,4,6-triaryl pyridines and pyrimidines was developed from commercially available aromatic ketones, aldehydes and hexamethyldisilazane (HMDS) as a nitrogen source under microwave irradiation. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
    Acid-controlled multicomponent selective synthesis of 2,4,6-triaryl pyridines and pyrimidines by using hexamethyldisilazane as a nitrogen source under microwave irradiation
  3. 1123
    “…The chemical structures of the molecules consist of a pyrazolo[1,5-a]pyrimidine acceptor core functionalized with one 3,6-bis(4,4′-dimethoxydiphenylamino)carbazole (3,6-CzDMPA) donor moiety via a phenyl π-spacer at the 3, 5 and 7 positions, respectively. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
    D-π-A-Type Pyrazolo[1,5-a]pyrimidine-Based Hole-Transporting Materials for Perovskite Solar Cells: Effect of the Functionalization Position
  4. 1124
    por Xiong, Wei, Xing, Huihui, Su, Yan, Chen, Zilu
    Publicado 2008
    “…The title compound, [Gd(C(5)H(2)N(2)O(4))(C(5)H(3)N(2)O(4))(C(12)H(8)N(2))(2)]·2H(2)O, was obtained from a solvothermal reaction of 2,4-dihydroxy­pyrimidine-5-carboxylic acid (H(3)iso), GdCl(3)·6H(2)O and 1,10-phenanthroline (phen). …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Texto
    (4-Oxido-2-oxo-1,2-dihydro­pyrimidine-5-carboxyl­ato-κ(2) O (4),O (5))(4-oxido-2-oxo-1,2-dihydro­pyrimidin-3-ium-5-carboxyl­ato-κ(2) O (4),O (5))bis­(1,10-phenanthroline-κ(2) N,N′)gadolinium(III) dihydrate
  5. 1125
    “…The title compound, 0.61C(19)H(17)BrN(4)O(3)S·0.39C(19)H(17)BrN(4)O(3)S, is a Schiff base derived from 5-bromo­salicylaldehyde and 4-amino-N-(4,6-dimethyl-2-pyrimidin­yl)benzene­sulfonamide(sulfamethazine) and is isostructural with its chloro analogue. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Texto
    4-[(5-Bromo-2-hydroxy­benzyl­idene)amino]-N-(4,6-dimethyl­pyrimidin-2-yl)benzene­sulfonamide–4-bromo-2-[(E)-({4-[(4,6-dimethyl­pyrimidin-2-yl)sulfamo­yl]phen­yl}iminio)meth­yl]phenolate [0.61 (7)/0.39 (7)]
  6. 1126
    por Zhu, Xiao-Tong, Zhang, Ge, Ma, Ning
    Publicado 2009
    “…In the mol­ecule of the title compound, C(24)H(20)F(2)N(6)O(4)·C(2)H(5)OH, the pyrimidine ring is oriented at dihedral angles of 42.64 (3) and 62.94 (3)° with respect to the benzene rings, while the dihedral angle between the benzene rings is 74.45 (3)°. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Texto
    2-Amino-5,7-bis­(4-fluoro­phen­yl)-1′,3′-dimethyl-7,8-dihydro­spiro­[pyrido[2,3-d]pyrimidine-6(5H),5′-pyrimidine]-2′,4,4′,6′(3H,1′H,3′H,5′H)-tetra­one ethanol solvate
  7. 1127
    “…Hence, novel series of pyrimidine Schiff bases (4–9) were employed in the synthesis of selenium nanoparticle forms (4NPs–9NPs). …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
    Novel pyrimidine Schiff bases and their selenium-containing nanoparticles as dual inhibitors of CDK1 and tubulin polymerase: design, synthesis, anti-proliferative evaluation, and molecular modelling
  8. 1128
    “…A novel series of pyrimidine-5-carbonitrile derivatives bearing benzylidene and hydrazone moieties with different linkers (spacers) were designed and synthesized as possible inhibitors of the vascular endothelial growth factor receptor-2 (VEGFR-2). …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
    Design, synthesis, in silico studies, and biological evaluation of novel pyrimidine-5-carbonitrile derivatives as potential anti-proliferative agents, VEGFR-2 inhibitors and apoptotic inducers
  9. 1129
    “…A novel series of pyrimidine-5-carbonitrile derivatives was designed, synthesized, then evaluated for their cytotoxic activity as novel anti-cancer with dual EGFR(WT)/COX-2 inhibitors. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
    Design, synthesis, and biological evaluation of new pyrimidine-5-carbonitrile derivatives as novel anti-cancer, dual EGFR(WT)/COX-2 inhibitors with docking studies
  10. 1130
    “…[Image: see text] Two hybrid series of pyrazole-clubbed pyrimidines 5a–c and pyrazole-clubbed pyrazoline compounds 6a,b and 7 were designed as attractive scaffolds to be investigated in vitro and in vivo for antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA) and Pseudomonas aeruginosa. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
    New Pyrazole-Clubbed Pyrimidine or Pyrazoline Hybrids as Anti-Methicillin-Resistant Staphylococcus aureus Agents: Design, Synthesis, In Vitro and In Vivo Evaluation, and Molecular Modeling Simulation
  11. 1131
    “…The new complexes [M(2)O(5)L(2)(H(2)O)(2)] · H(2)O (M = Mo, 1; M = W, 2), [RuL(2)(H(2)O)(2)] · H(2)O (3), [ML(3)] · xH(2)O (M = Rh, x = 2, 4; M = Ir, x = 1, 5), [RhL(2)(PPh(3))(2)](ClO(4)) · 2H(2)O (6), [PdL(2)] · 2H(2)O (7), [PdL(phen)]Cl · H(2)O (8), [Re OL(2)(PPh(3))]Cl (9) and [UO(2)L(2)] (10) are reported, where LH is 4,6-diamino-1-hydro-5-hydroxy-pyrimidine-2-thione. The complexes were characterized by elemental analyses, physical techniques (molar conductivity, room-temperature magnetic susceptibility), and spectroscopic (IR, Raman, UV/VIS/ligand field, NMR, mass) methods. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Texto
    The First Metal Complexes of 4,6-diamino-1-hydro-5-hydroxy-pyrimidine-2-thione: Preparation, Physical and Spectroscopic Studies, and Preliminary Antimicrobial Properties
  12. 1132
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Texto
    Cyclo­hexa­nespiro-2′-[2′,3′,6′,7′-tetra­hydro-1′H-cyclo­penta­[d]pyrimidin]-4′(5′H)-one
  13. 1133
    “…The crystal structure consists of μ-N:N′ pyrimidine-bridged zigzag-like nickel thio­cyanate chains; these are further linked by μ-N:N-bridging pyrimidine ligands into layers which are stacked perpendicular to the b axis. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Texto
    Poly[bis­(methanol-κO)tris­(μ-pyrimidine-κ(2) N:N′)tetra­kis(thio­cyanato-κN)dinickel(II)]
  14. 1134
    “…In the title compound, C(18)H(15)N(3)O(3)·0.5CH(2)Cl(2), the fused ring benzofuro[2,3-d]pyrimidine system is essentially planar [maximum deviation 0.029 (1) Å]. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Texto
    2-(2-Hydroxy­ethyl­amino)-3-phenyl-1-benzofuro[3,2-d]pyrimidin-4(3H)-one dichloro­methane hemisolvate
  15. 1135
    “…In the title compound, C(14)H(15)ClN(2)O(2)S, the tetra­hydro­pyrimidine ring adopts a twisted boat conformation with the carbonyl group in an s-trans conformation with respect to the C=C double bond of the six-membered tetra­hydro­pyrimidine ring. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Texto
    Ethyl 4-(4-chloro­phen­yl)-6-methyl-2-thioxo-1,2,3,4-tetra­hydro­pyrimidine-5-carboxyl­ate
  16. 1136
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Texto
    Ethyl 4-(4-cyano­phen­yl)-6-methyl-2-thioxo-1,2,3,4-tetra­hydro­pyrimidine-5-carboxyl­ate
  17. 1137
    por Zou, Guanglong, Zhu, Mei
    Publicado 2010
    “…In the title compound, C(19)H(23)Cl(2)N(3)OS, the dihedral angle between the benzene ring and the pyrimidine ring is 86.6 (9)°. The piperidine ring adopts a chair conformation.…”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Texto
    4-Chloro-2-{3-chloro-2-[(3,5-dimethyl­piperidin-1-yl)meth­yl]phenyl­sulfan­yl}-6-methoxy­pyrimidine
  18. 1138
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Texto
    Ethyl 1,6-dimethyl-2-oxo-4-(quinolin-4-yl)-1,2,3,4-tetra­hydro­pyrimidine-5-carboxyl­ate
  19. 1139
    “…The asymmetric unit consists of one Co(II) ion, one pyrimidine ligand, two seleno­cyanate anions and one methanol mol­ecule in general positions as well as one pyrimidine ligand located around a twofold rotation axis. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Texto
    Poly[tetra­kis­(seleno­cyanato-κN)bis­(methanol-κO)tris­(μ-pyrimidine-κ(2) N:N′)dicobalt(II)]
  20. 1140
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Texto
    4-(4-Chloro-5-methyl-3-trifluoro­meth­yl-1H-pyrazol-1-yl)-6-(prop-2-ynyl­oxy)pyrimidine
Herramientas de búsqueda: RSS