Abstract
Potent anticonvulsant activity has been reported for (R,S)-2-acetamido-N-benzyl-2-methylacetamide (2a). Select alpha-heteroatom substituted derivatives of 2a have been prepared (26 examples) in which the alpha-methyl group has been replaced by nitrogen (3a-q), oxygen (3r-u), and sulfur (3v-z) containing moieties. The functionalized amino acid derivatives were evaluated in the maximal electroshock seizure (MES) and horizontal screen (tox) tests in mice. The most active compounds were (R,S)-2-acetamido-N-benzyl-2-(methoxyamino)acetamide (31), and (R,S)-2-acetamido-N-benzyl-2-(methoxymethylamino)acetamide (3n). After ip administration, the MES ED50 values for 31 (6.2 mg/kg) and 3n (6.7 mg/kg) compared favorably with phenytoin (9.50 mg/kg).
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