NEW SUBSTITUTED PHTHALIDES, A PROCESS FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM

摘要

The invention relates to compounds of formula (I):whereinR<1 >represents alkyl or ureido,R<2 >represents alkyl or hydrogen, or R<1 >and R<2 >together form a 5- or 6-membered ring,R<3 >represents CN, NO2, NRaR'a, NRaSO2R'a, NRaCZR<5 >or CZNRaR'a,R<4 >represents hydrogen or R<3>,and medicinal products containing the same which are useful in treating or preventing epilepsy and neurodegenerative diseases.