The present invention provides compounds having the formula: ##STR00001## wherein R.sup.1, R.sup.2, R, R' and the subscript p are described herein. The compounds are useful in the treatment and/or prevention of a condition or disorder mediated by a G-protein coupled receptor. Pharmaceutical compositions and methods of using these compounds for the treatment and/or prevention of a condition or disorder mediated by a G-protein coupled receptor, such as eating disorder, obesity, anxiety disorders and mood disorders are also provided.