THERAPEUTIC HYDROXYPYRIDINONES, HYDROXYPYRIMIDINONES AND HYDROXYPYRIDAZINONES
The invention provides compounds of formula (I): and salts and prodrugs thereof wherein R4, X1 and X2 have any of the meanings defined in the specification, as well as pharmaceutical compositions comprising the compounds or salts and methods for their use in therapy. The compounds have useful antiviral properties.
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(2014/04/03)
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