| abstract |
The present invention relates to compounds of formula (I) wherein R 1 -R 4 , p and q have any of the values described in the description, and pharmaceutically acceptable salts thereof, and such Pharmaceutical compositions containing compounds or salts are provided. The compounds and salts are 5-HT ligands and are useful for treating diseases, disorders and / or symptoms in mammals involving the activity of 5-HT receptors. The compounds and salts are particularly useful for treating diseases of the central nervous system. [Chemical 1] |