Mostrando 1,501 - 1,520 Resultados de 4,819 Para Buscar 'Pirimidina~', tiempo de consulta: 4.59s Limitar resultados
  1. 1501
    “…In the title compound, C(35)H(32)N(4)O(4), the pyrazole ring forms a dihedral angle of 15.04 (8)° with the adjacent pyrimidine ring. The pyrimidine ring forms dihedral angles of 9.95 (8) and 1.86 (7)° with its adjacent meth­oxy-substituted benzene rings, whereas the equivalent angles are 80.24 (9) and 11.55 (9)° for the pyrazole ring and its adjacent benzene rings. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  2. 1502
    “…The cations are disordered about inversion centres. The tetra­hydro­pyrimidine ring is essentially planar [maximum deviation = 0.007 (2) Å] and forms a dihedral angle of 41.12 (6)° with the plane of the benzene ring. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  3. 1503
    “…In the title compound, C(10)H(16)N(2)O(9)S(3), the pyrimidine ring of the 1,3-dimethyl barbituric acid moiety has an envelope conformation with the C atom carrying the methyl­sulfonyl and bis­(methyl­sulfon­yl)methyl substituents as the flap. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  4. 1504
  5. 1505
    “…In the title compound, C(17)H(21)ClN(2)O(6), the di­hydro­pyrimidine ring adopts a flattened envelope conformation, with the sp (3)-hybridized C atom forming the flap. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  6. 1506
  7. 1507
  8. 1508
  9. 1509
  10. 1510
    “…With the aim of discovering RAF inhibitors that bind to DFG-out inactive conformation created by the movement of Asp-Phe-Gly (DFG), we conducted structure-based drug design using the X-ray cocrystal structures of BRAF (v-raf murine sarcoma viral oncogene homolog B1), starting from bisarylurea derivative based on 1H-pyrazolo[3,4-d]pyrimidine scaffold 1a. Most of the synthesized compounds showed good to excellent inhibitory activities against BRAF(V600E) kinase, possessed moderate to potent anti-proliferative activities against four tumor cell lines (A375, HT-29, PC-3 and A549) and good selectivity towards cancer cells rather normal cells (Madin-Darby canine kidney, MDCK). …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  11. 1511
    “…In this study, a series of conformationally restricted thieno[3,2-d]pyrimidinones, thieno[3,2-d]pyrimidines and quinazolinones was designed and synthesized with the goal of improving the biological activity as 17β-hydroxysteroid dehydrogenase type 2 inhibitors of the corresponding amidothiophene derivatives. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  12. 1512
    “…The title compounds, C(19)H(12)Br(2)N(2)O(2) and C(18)H(11)Br(2)N(3)O(2), were synthesized in good yields from condensation reactions of 3-bromo­benzoyl chloride with 2-amino­pyridine or 2-amino­pyrimidine using standard condensation reaction conditions and subsequent column chromatography.…”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  13. 1513
    “…In an attempt to find novel, potent α-glucosidase inhibitors, a library of poly-substituted 3-amino-2,4-diarylbenzo[4,5]imidazo[1,2-a]pyrimidines 3a–ag have been synthesized through heating a mixture of 2-aminobenzimidazoles 1 and α-azidochalcone 2 under the mild conditions. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  14. 1514
    “…The derivatives 3-((bromophenyl) imino)-1-(morpholino (pyridine) methyl) indolin-2-one, 2-((oxoindoline) amino) benzoic acid, 3-(thiazolo-imino) indolinone, ethyl-2-((oxoindolin-3-ylidene)amino)-benzothiophene-3-carboxylate, 1-(oxoindoline)-benzo[4,5] thieno [2,3-d]pyrimidin-4(1H)-one, ethyl-2-(2-oxoindoline) hydrazine-1-carboxylate, N-(mercapto-oxo-pyrimidine)-2-(oxoindoline) hydrazine-1-carboxamide, N-(oxo-thiazolo[3,2-a] pyrimidine)-2-(oxoindolin-ylidene) hydrazine-carboxamide, 3-((amino-phenyl) amino)-3-hydroxy- indolinone, 3-((amino-phenyl) imino)-indolinone, 2-(2-((oxoindoline) amino) phenyl) isoindolinone, 2-(oxoindoline) hydrazine-carbothioamide, 5′-thioxospiro[indoline-3,3′-[1,2,4]triazolidin]-one, 5′-amino-spiro[indoline-3,2′-[1,3,4]thiadiazol]-2-one and 3-((2-thioxo-imidazo[4,5-b]quinoxaline) imino) indolinone were synthesized from the starting material 1-(morpholino (pyridine) methyl) indoline-2,3-dione and evaluated for their in vitro cytotoxic activity against carcinogenic cells. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  15. 1515
  16. 1516
    “…The first access to tris(het)arylated pyrido[1′,2′:1,5]pyrazolo[3,4-d]pyrimidine derivatives is reported. The series were generated from 4-chloroaminopyridinium, which afforded the key intermediate bearing three leaving groups, i.e. a C-2 methylsulfanyl, a lactame carbonyl group in C-4 and a chlorine atom in C-6. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
  17. 1517
  18. 1518
    “…The thio­phene and phenyl rings are oriented at dihedral angles of 62.35 (4) in the first independent mol­ecule and 60.74 (5)° in the second, while the pyrimidine rings adopt twisted conformations in both molecules. …”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Texto
  19. 1519
    “…In the title compound, C(19)H(18)FN(3)O(4), the fused pyridine and pyrimidine rings adopt half-chair conformations. The structure displays intra­molecular N—H⋯O and inter­molecular N—H⋯F hydrogen bonding.…”
    Enlace del recurso
    Enlace del recurso
    Enlace del recurso
    Texto
  20. 1520
Herramientas de búsqueda: RSS