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Synthesis and anticonvulsant evaluation of some new 2-substituted-3-arylpyrido[2,3-d]pyrimidinones
David C White1, Thomas D Greenwood, Aaron L Downey
1Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061-0212, USA.
Abstract:
A series of 2-substituted-3-arylpyrido[2,3-d]pyrimidinones was prepared for evaluation as potential anticonvulsants. In murine screening, compounds 4a-c having a 2-oxo-2-(4-pyridyl)ethyl group in the 2-position and a 2-substituted phenyl moiety at the 3-position of the pyridopyrimidinone system displayed the most potent anti-seizure activity in both the maximal electroshock (MES) and pentylenetetrazol (scPTZ) tests at doses in the 3-10mg/kg range. Compound 4c showed no agonist activity at the GABA(A) receptor and was unable to block presynaptic sodium and calcium channels in vitro.
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