Mechanochemistry Applied To Reformulation And Scale-up Production Of Ethionamide: Salt Selection And Solubility Enhancement.

dc.creatorde Melo, Cristiane C
dc.creatorda Silva, Cecilia C P
dc.creatorPereira, Carla C S S
dc.creatorRosa, Paulo C P
dc.creatorEllena, Javier
dc.date2016-Jan
dc.date2016-05-23T19:39:45Z
dc.date2016-05-23T19:39:45Z
dc.date.accessioned2018-03-29T01:27:24Z
dc.date.available2018-03-29T01:27:24Z
dc.identifierEuropean Journal Of Pharmaceutical Sciences : Official Journal Of The European Federation For Pharmaceutical Sciences. v. 81, p. 149-156, 2016-Jan.
dc.identifier1879-0720
dc.identifier10.1016/j.ejps.2015.10.007
dc.identifierhttp://www.ncbi.nlm.nih.gov/pubmed/26472469
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/235124
dc.identifier26472469
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1303367
dc.descriptionEthionamide (ETH), a Biopharmaceutics Classification System class II drug, is a second-line drug manufactured as an oral dosage form by Pfizer to treat tuberculosis. Since its discovery in 1956, only one reformulation was proposed in 2005 as part of the efforts to improve its solubility. Due to the limited scientific research on active pharmaceutical ingredients (APIs) for the treatment of neglected diseases, we focused on the development of an approachable and green supramolecular synthesis protocol for the production of novel solid forms of ETH. Initially, three salts were crystal engineered and supramolecular synthesized via slow evaporation of the solvent: a saccharinate, a maleate and an oxalate. The crystal structures of all salts were determined by single crystal X-ray diffraction. In sequence, mechanochemical protocols for them were developed, being the scale-up production of the maleate salt successfully reproducible and confirmed by powder X-ray diffraction. Finally, a more complete solid-state characterization was carried out for the ETH maleate salt, including thermal analysis, infrared spectroscopy, scanning electron microscopy and equilibrium solubility at different dissolution media. Although ETH maleate is thermodynamically less stable than ETH, the equilibrium solubility results revealed that this novel salt is much more soluble in purified water than ETH, thus being a suitable new candidate for future formulations.
dc.description81
dc.description149-156
dc.languageeng
dc.relationEuropean Journal Of Pharmaceutical Sciences : Official Journal Of The European Federation For Pharmaceutical Sciences
dc.relationEur J Pharm Sci
dc.rightsfechado
dc.sourcePubMed
dc.subjectEthionamide Salts
dc.subjectMechanochemical Synthesis
dc.subjectPowder X-ray Diffraction
dc.subjectSingle-crystal X-ray Diffraction
dc.subjectSolubility Improvement
dc.subjectThermal Analysis
dc.subjectTuberculosis
dc.titleMechanochemistry Applied To Reformulation And Scale-up Production Of Ethionamide: Salt Selection And Solubility Enhancement.
dc.typeArtículos de revistas


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