Abstract: Compounds of formula (1): wherein R1, R2, R3, R4, R5 and R6 are independently selected from hydrogen, alkyl, aryl and non-aromatic heterocyclic groups, or each of one or more pair(s) of the substituent groups R1 to R6 may together form a 3,4,5,6,7 or 8-membered ring containing 0,1 or 2 heteroatom(s); R7 is selected from alkyl, aryl and non-aromatic heterocyclic groups; and R8 is selected from hydrogen, halogen, alkyl, aryl and non-aromatic heterocyclic groups; and pharmaceutically acceptable salts and prodrugs thereof, are useful for treating conditions generally associated with abnormalities in glutamatergic transmission.

Abstract: The use of a compound of formula (I): wherein R1, R2, R3, R4, R5 and R6 are independently selected from hydrogen, alkyl, aryl and non-aromatic heterocyclic groups, or each of one or more pair(s) of the substituent groups R1 to R6 may together form a 3, 4, 5, 6, 7 or 8-membered ring containing 0, 1 or 2 heteroatom(s); R7 is selected from alkyl, aryl and non-aromatic heterocyclic groups, and R8 is selected from hydrogen, halogen, alkyl, aryl and non-aromatic heterocyclic groups; and pharmaceutically acceptable salts and prodrugs thereof, in the manufacture of a medicament for use in the treatment of a condition generally associated with abnormalities in glutamatergic transmission; novel compounds of formula (1) per se and for use in therapy.