Publications by authors named "Gennady I Ostapenko"

The adsorption of hexylamine at the solution-gold interface in 1 M HClO in the presence of 0.1 M Fe and 0.1 Fe was studied by potentiodynamic, chronoamperometric and EIS methods.

View Article and Find Full Text PDF

Herein we report the synthesis of a set of seventeen 3-sulfonamide substituted coumarin derivatives. Prepared compounds were tested in vitro for inhibition of four physiologically relevant isoforms of the metalloenzyme human carbonic anhydrase (hCA, EC 4.2.

View Article and Find Full Text PDF

The title compounds, CHNOS, (I), and CHBrNOS, (II), are potential active pharmaceutical ingredients. Compound (I) comprises two almost planar fragments. The first is the central (carbamo-thio-yl)amide (r.

View Article and Find Full Text PDF

The title compounds, CHNOS (I) and CHNOS (II), are structural analogs of the alkaloid Thio-sporine B. Both mol-ecules adopt a near-planar V-shaped conformation, which is consolidated by intra-molecular N-H⋯N and C-H⋯O hydrogen bonds. The crystal structure of (I) consists of mlecular stacks along the axis, in which the mol-ecules are linked to each other by π(S)⋯π(C) inter-actions.

View Article and Find Full Text PDF

The asymmetric unit of the title compound, C11H9Br2N3O, contains two crystallographically independent mol-ecules with similar geometries; the Br-C-C=O torsion angles are 1.2 (4) and -2.8 (4)°, and the benzene and triazole rings are inclined o one another by 51.

View Article and Find Full Text PDF

The title compound, C15H14N2S, crystallizes with two independent mol-ecules in the asymmetric unit. The central imidazo[2,1-b][1,3]benzo-thia-zole unit is planar (r.m.

View Article and Find Full Text PDF

In the title mol-ecule, C16H15BrN2S2, the central imidazo[2,1-b]thia-zole fragment is almost planar (r.m.s.

View Article and Find Full Text PDF

The title compound, C10H8BrF3N2, crystallizes with two independent mol-ecules in the asymmetric unit, which can be considered as being related by a pseudo-inversion center, so their conformations are different; the corresponding N=C-N-C torsion angles are 54.6 (5) and -50.5 (5)°.

View Article and Find Full Text PDF

In the title mol-ecule, C15H9N3O2S, the central imidazo[2,1-b][1,3]benzo-thia-zole heterotricyclic unit is essentially planar (r.m.s.

View Article and Find Full Text PDF

In the title mol-ecule, C9H6BrNS, the planes of the 2-bromo-1,3-thia-zole and phenyl rings are inclined at 7.45 (10)° with respect to each other. In the crystal, mol-ecules related by a centre of symmetry are held together via π-π inter-actions, with a short distance of 3.

View Article and Find Full Text PDF

In the title compound, C12H9ClN2S, the imidazo[2,1-b]thia-zole fragment is planar (r.m.s.

View Article and Find Full Text PDF

The asymmetric unit of the title compound, C20H24N2O2S, contains two independent mol-ecules having very similar geometries. The main N-(6-meth-oxy-1,3-benzo-thia-zol-2-yl)acetamide moiety adopts an almost planar structure (r.m.

View Article and Find Full Text PDF

In the title mol-ecule, C16H11BrN2OS, the central imidazo[2,1-b][1,3]benzothia-zole tricycle is essentially planar (r.m.s.

View Article and Find Full Text PDF