“Characterization and structural analysis of the potent antiparasitic and antiviral agent tizoxanide”

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2013 vol. 1036 p. 318 - 318

izoxanide [2-(hydroxy)-N-(5-nitro-2-thiazolyl)benzamide, TIZ] is a new potent anti-infective agent which may enhance current therapies for leishmaniasis, Chagas disease and viral hepatitis. The aim of this study was to identify the conformational preferences that may be related to the biological activity of TIZ by resolving its crystal structure and characterizing various physicochemical properties, including its experimental vibrational and 13C nuclear magnetic resonance properties, behavior on heating and solubility in several solvents at 25 C. TIZ crystallizes from dimethylformamide as the carboxamide tautomer in the triclinic system, space group P(1) (No. 2) with the following unit cell parameters at 173(2) K: a = 5.4110(3) Å, b = 7.3315(6) Å, c = 13.5293(9) Å, a = 97.528(3), b = 95.390(4), c = 97.316(5), V = 524.41(6) Å3, Z = 2, Dc = 1.680 g/cm3, R1 = 0.0482 and wR2 = 0.0911 for 2374 reflections. This modification of TIZ has a ‘graphitic’ structure and is composed of tig