| abstract |
(57) The present invention relates to a compound of the general formula I wherein the bond represented by the dashed line may be a single bond, a double bond or may have no bond, and when there is no bond, nitrogen is It is replaced by hydrogen and R 2; X represents an SO 2 or C = O or CH 2; Y is -CH (R 4) -, -N (R 4) - or -N (R 4) -CH 2- , O, and the meanings of R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and R 8 are as defined in the specification). This compound is useful as a positive modulator of the AMPA receptor. |