10.1007/s00706-012-0791-8
The study focuses on the synthesis, structural, and biological evaluation of four 5-phenylhydantoin derivatives as potential anticonvulsant agents. These compounds were designed with lipophilicities similar to phenytoin, a well-established anticonvulsant drug. The anticonvulsant activities of the synthesized derivatives were assessed in rats using subcutaneous and intravenous pentylenetetrazol seizure tests, and their potential sedative effects were measured through spontaneous locomotor activity tests. The X-ray analysis of three compounds provided insights into their crystal structures, suggesting a correlation between crystal packing interactions and their biological activities. The study found that 5-ethyl-5-phenyl-3-propylhydantoin demonstrated the most favorable pharmacological properties among the synthesized compounds, with anticonvulsant activity comparable to phenytoin and a lower risk of inducing sedation in rats. This indicates its potential as an effective anticonvulsant agent with fewer sedative side effects.