Fabio Zuluaga

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This study was conducted at Carimagua Research Centre in a well-drained savanna area in the eastern plains of Colombia. The objectives were to note the effect of ecological factors on tick burdens, principally the effect of the environment given by four grasses on the seasonal variations of tick populations. Adult female tick counts were carried out on(More)
The title compound, C(12)H(10)BrN(3), is essentially planar (r.m.s. deviation of all non-H atoms = 0.0174 Å), with a dihedral angle of 0.5 (2)° between the two aromatic rings. In the crystal, mol-ecules are linked by weak N-H⋯N inter-actions, forming a zigzag chain running parallel to [001].
In the title mol-ecule, C(10)H(11)BrClNO, there is a twist between the mean plane of the amide group and the benzene ring [C(=O)-N-C-C torsion angle = -27.1 (3)°]. In the crystal, inter-molecular N-H⋯O and weak C-H⋯O hydrogen bonds link the mol-ecules into chains along [010].
In the title compound, C18H20N2O7, the dihedral angle between the aromatic rings is 7.28 (7)° and the almost planar conformation of the mol-ecule is supported by an intra-molecular O-H⋯O hydrogen bond, which closes an S(6) ring. In the crystal, weak C-H⋯O hydrogen bonds and aromatic π-π stacking link the mol-ecules into a three-dimensional network. A(More)
The ability of Simulium mexicanum and Simulium metallicum to serve as biological or mechanical vectors of an enzootic and an epizootic strain of Venezuelan equine encephalitis (VEE) virus was examined. Guinea pigs were inoculated with the epizootic Cordoba strain or the enzootic RPVP407 strain of VEE virus. Wild-caught adult Simuliidae were fed on the(More)
In the title mol-ecule, C(11)H(14)BrNO(2), there is twist between the mean plane of the amide group and the benzene ring [the C-N-C-C torsion angle is -172.1 (2)°]. The amide H atom forms an intra-molecular hydrogen bond with the Br atom. In the crystal, inter-molecular O-H⋯O and weak C-H⋯O hydrogen bonds link mol-ecules into a chain along [100].
In the title mol-ecule, C(11)H(14)BrNO, there is twist between the mean plane of the amide group and the benzene ring [C(=O)-N-C C torsion angle = -31.2 (5)°]. In the crystal, inter-molecular N-H⋯O and weak C-H⋯O hydrogen bonds link mol-ecules into chains along [100]. The methyl group H atoms are disordered over two sets of sites with equal occupancy.