Synthesis and evaluation of N-substituted acridones as antiviral agents against haemorrhagic fever viruses
Background: In the present study, a series of N-substituted acridone derivatives was synthesized and evaluated against two haemorrhagic fever viruses (HFV). Methods: Compounds were tested against Junin virus (JUNV), an arenavirus agent of Argentine haemorrhagic fever, and dengue virus (DENV), a flav...
| Autores: | , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2008 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/71284 |
| Acceso en línea: | http://hdl.handle.net/11336/71284 |
| Access Level: | acceso abierto |
| Palabra clave: | Junin Virus Dengue Virus Hemorrhagic Fever Viruses Acridones https://purl.org/becyt/ford/3.3 https://purl.org/becyt/ford/3 |
| Sumario: | Background: In the present study, a series of N-substituted acridone derivatives was synthesized and evaluated against two haemorrhagic fever viruses (HFV). Methods: Compounds were tested against Junin virus (JUNV), an arenavirus agent of Argentine haemorrhagic fever, and dengue virus (DENV), a flavivirus agent of the most prevalent arthropod-borne viral disease in humans. Results: Among tested compounds, two N-allyl acridones (derivatives 3c and 3f) elicited a potent and selective antiviral activity against JUNV (strain IV4454) and DENV-2 (strain NGC) with 50% effective concentration values between 2.5 and 5.5 μM, as determined by virus yield inhibition. No cytotoxicity was detected at concentrations up to 1,000 μM, resulting in selectivity indices >181.8-400.0. Both acridones were effective against a wide spectrum of arenaviruses and the four serotypes of DENV. Furthermore, 3c and 3f failed to inactivate virus before cell infection as well as to induce a refractory state by cell pretreatment, indicating that the inhibitory effect was exerted through a blockade in virus multiplication during the infectious process. Conclusion: These data are the first demonstration that acridone derivatives have a potent antiviral activity that block in vitro multiplication of HFV belonging to Arenaviridae and Flaviviridae, such as JUNV and DENV. © 2008 International Medical Press. |
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