RESUMO
The ligand behavior of di-2-pyridylketone 2-aminobenzoylhydrazone (Hdpa), and phenyl(2-pyridyl)ketone 2-aminobenzoylhydrazone (Hdba) towards organotin derivatives was investigated. The synthesis and the IR and 119Sn NMR spectroscopic characterization of the compounds is reported, together with the X-ray crystal structures of Hdpa and Sn(C6H5)3Cl(OH2).Hdpa, which are discussed and compared. The in vitro evaluation of antimicrobial properties revealed the strong activity of Sn(C6H5)2(Hdpa)Cl2 and Sn(C6H5)3Cl(OH2).Hdpa complexes. None of the compounds showed genotoxicity in the Bacillus subtilis rec-assay and in the Salmonella-microsome test.
Assuntos
Compostos Orgânicos de Estanho/química , Compostos Orgânicos de Estanho/síntese química , Antibacterianos , Anti-Infecciosos/química , Anti-Infecciosos/farmacologia , Bactérias/efeitos dos fármacos , Cristalografia por Raios X , Fungos/efeitos dos fármacos , Hidrazonas/química , Ligação de Hidrogênio , Raios Infravermelhos , Cetonas/química , Espectroscopia de Ressonância Magnética , Testes de Sensibilidade Microbiana , Modelos Moleculares , Estrutura Molecular , Testes de Mutagenicidade , Compostos Orgânicos de Estanho/farmacologia , Piridinas/química , Análise EspectralRESUMO
The crystal and molecular structures of N-cyano-N'-methyl-N"-(2-[(2-amino-5-thiazolyl) methylthio] ethyl) guanidine and N-cyano-3-[(2-guanidino-5-thiazolyl)methylthio]propionamidine are reported. Both molecules are in an extended conformation. In all two crystals a system of hydrogen bonds links the molecules in a three-dimensional network. A comparison with the structure of cimetidine and famotidine is also included.
Assuntos
Guanidinas/química , Antagonistas dos Receptores H2 da Histamina/química , Tiazóis/química , Cimetidina/química , Cristalização , Famotidina/química , Conformação Molecular , Difração de Raios XRESUMO
The crystal structures of two phenylethanolamines showing bronchospasmolytic activity have been determined at room temperature [293 (2) K]. Crystal data are as follows: 11-morpholinotricyclo[6.3.0.0(2,7)]undeca-2,4,6-trien-l-ol (3), C15H19NO2, M(r) = 245.3, triclinic, P1, a = 10.360 (5), b = 12.169 (5), c = 12.488 (4) A, alpha = 95.14 (10), beta = 108.49 (12), gamma = 114.69 (5) degrees, V = 1311 (2) A3, Z = 4, Dx = 1.243 Mg m-3, Cu K alpha 1 radiation, lambda = 1.540562 A, mu = 0.618 mm-1, F(000) = 528, R = 0.0537 for 3009 observed reflections; 4-morpholino-1,2-benzocyclononen-3-ol monohydrate (5), C17H25NO2.H2O, M(r) = 293.4, monoclinic, P2(1)/c, a = 10.063 (9), b = 19.398 (5), c = 8.670 (5) A, beta = 110.56 (1) degree, V = 1585 (2) A3, Z = 4, Dx = 1.230 Mg m-3, Mo K alpha 1 radiation, lambda = 0.709300 A, mu = 0.0778 mm-1, F(000) = 640, R = 0.0376 for 1407 observed reflections. The stereochemistry of compound (3) is found to be 'all cis', which allows the mechanism of formation of these compounds to be interpreted. The various aspects of the conformations of these molecules are discussed.
