abstract |
The present invention relates to compounds of formula I n nwhereinn R, R 1 , R 2 , R 3 , R 4 , aryl, n, and m are as defined in the specification and pharmaceutically acceptable acid addition salts and tautomeric forms thereof. Such compounds have good activity on the 5-HT 5A receptor. Therefore, the invention provides methods for the treatment of certain CNS disorders with such compounds. |