Mostrando 1,541 - 1,560 Resultados de 4,819 Para Buscar 'Pirimidina~', tiempo de consulta: 6.66s Limitar resultados
  1. 1541
  2. 1542
    por Banu, Noor Afshan, Bheema Raju, V.
    Publicado 2012
    “…In the title compound, C(26)H(26)N(2)O(6)S, the benzene ring is positioned axially to the thia­zolopyrimidine ring and bis­ects it with a dihedral angle of 80.94 (7)°. The pyrimidine ring adopts a flattened boat conformation. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  3. 1543
  4. 1544
  5. 1545
    “…Predictive quantitative structure–activity relationship was performed on the novel4-oxo-1,4-dihydroquinoline and 4-oxo-4H-pyrido[1,2-a]pyrimidine derivatives to explore relationship between the structure of synthesized compounds and their anti-HIV-1 activities. …”
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  6. 1546
    “…In the title compound, C(22)H(22)N(6)S, the pyrazolo­[3,4-d]pyrimidine rings system is almost planar, with the r.m.s. deviation for the fitted atoms being 0.011 Å. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  7. 1547
  8. 1548
    “…One of the amuvatinib derivatives, N-(2H-1,3-benzodioxol-5-yl)-4-{thieno[3,2-d]pyrimidin-4-yl}piperazine-1-carboxamide, termed compound 6, was found to be efficacious in tumor cells experiencing glucose starvation. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  9. 1549
  10. 1550
    por Shukla, Bindesh Kumar, Yadava, Umesh
    Publicado 2020
    “…An exhaustive quantum mechanical calculations on a pharmaceutically critical molecule N-{4-[(4-amino-3-phenyl-1H-pyrazolo[3,4-d]pyrimidin-1-yl)sulfonyl]phenyl}acetamide have been investigated through the B3LYP/6-31G∗∗ Density Functional and HF/6-31G∗∗ Wave Function techniques. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  11. 1551
    “…Background: Heterocyclic compounds and their fused analogs, which contain pharmacophore fragments such as pyridine, thiophene and pyrimidine rings, are of great interest due to their broad spectrum of biological activity. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  12. 1552
    “…A novel compound N-benzyl-2-oxo-1,2-dihydrofuro [3,4-d]pyrimidine-3(4H)-carboxamide (DHFP) was synthesized by addition, rearrangement, and intramolecular cyclization reactions. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  13. 1553
    por Mohamadpour, Farzaneh
    Publicado 2023
    “…The Knoevenagel-Michael cyclocondensation of barbituric acid/1,3-dimethylbarbituric acid, malononitrile, and arylaldehyde derivatives was used to construct a multicomponent green tandem method for the metal-free synthesis of pyrano[2,3-d]pyrimidine scaffolds. At room temperature in aqueous ethanol, photo-excited state functions generated from Na(2) eosin Y were employed as direct hydrogen atom transfer (HAT) catalysts by visible light mediated in the air atmosphere. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  14. 1554
    “…Taking into account this evidence and as a continuation of our study in the GABA(A) receptor modulators field, we designed and synthesized new compounds containing the thiophene ring with 4,5-dihydro-5-oxo-pyrazolo[1,5-a]thieno[2,3-c]pyrimidine and pyrazolo[1,5-a]thieno[2,3-c] pyrimidine scaffold. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  15. 1555
    “…The title complex, [Nb(C(7)H(12)N(3))(4)]PF(6), features chelating hpp anions (hpp is 1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2-a]pyrim­idine) that define a distorted dodeca­hedral coordination geometry based on an N(8) donor set. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Texto
  16. 1556
  17. 1557
    “…In the title compound, C(24)H(22)N(2)O(4)S, the central pyrimidine ring is significantly puckered, assuming a conformation inter­mediate between a boat and a screw boat. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Texto
  18. 1558
    “…The asymmetric unit contains two independent mol­ecules, with essentially identical geom­etries and conformations. The dihydro­pyrimidine rings adopt a half-chair conformation. The dihedral angles between the benzene ring and the thio­phene ring are 54.82 (8) and 58.72 (8)° in the two mol­ecules. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Texto
  19. 1559
  20. 1560
Herramientas de búsqueda: RSS