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http://hdl.handle.net/1843/40909| Tipo: | Artigo de Periódico |
| Título: | Physics, chemistry, and hirshfeld surface analyses of gamma-irradiated thalidomide to evaluate behavior under sterilization doses |
| Autor(es): | Valner Augusto Freitas da Silva da Nova Mussel Max Passos Ferreira Maria Betânia de Freitas Marques Maria Irene Yoshida Mariana Ramos Almeida Bernardo Lages Rodrigues Wagner da Nova Mussel |
| Resumen: | Thalidomide was indicated as a sedative and antiemetic and prescribed for pregnant women. Its tragic teratogenic effects culminated in withdrawal from the market. Since the discovery of its anti-angiogenic and anti-inflammatory actions, thalidomide has been used in the treatment of leprosy and multiple myeloma, which justify studies of its stability. We investigated the effects of irradiation of thalidomide up to 100 kGy (fourfold the usual sterilizing dose for pharmaceutics). The β polymorph of thalidomide was obtained in an isothermal experiment at 270 °C. All samples underwent gamma irradiation for specific times. At different doses, decomposition of the pharmaceutical was not observed up to 100 kGy. The observed effect was angle turning between the phthalimide and glutarimide rings modulated by repulsion towards the carbonyl group, leading to a stable energetic configuration, as measured by the equilibrium in the torsion angle after irradiation. The thalidomide molecule has a center of symmetry, so a full turn starting from 57.3° will lead to an identical molecule. Further irradiation will start the process again. Samples irradiated at 30 and 100 kGy have more compact unit cells and a lower volume, which leads to an increase in the intermolecular hydrogen interaction within the unit cell, resulting in higher thermal stability for polymorph α. |
| Asunto: | Talidomida Radiação gama Doses de esterilização Superfície de Hirshfeld |
| Idioma: | eng |
| País: | Brasil |
| Editor: | Universidade Federal de Minas Gerais |
| Sigla da Institución: | UFMG |
| Departamento: | FAR - DEPARTAMENTO DE ALIMENTOS ICX - DEPARTAMENTO DE QUÍMICA |
| Tipo de acceso: | Acesso Aberto |
| Identificador DOI: | 10.1016/j.jpha.2018.01.005 |
| URI: | http://hdl.handle.net/1843/40909 |
| Fecha del documento: | jun-2018 |
| metadata.dc.url.externa: | https://www.sciencedirect.com/science/article/pii/S2095177918300054?via%3Dihub |
| metadata.dc.relation.ispartof: | Journal of Pharmaceutical Analysis |
| Aparece en las colecciones: | Artigo de Periódico |
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| archivo | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| Physics, chemistry, and Hirshfeld surface analyses of gamma-irradiated thalidomide to evaluate behavior under sterilization doses.pdf | 2.64 MB | Adobe PDF | Visualizar/Abrir |
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