Compounds having the formula: wherein L is a bond or (C1-C4)alkylene, R″ is hydrogen or (C1-C8)alkyl, and R1, R2, R4, R, R′, and the subscript n are as described herein, are provided, which 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 disorders, obesity, anxiety disorders and mood disorders, are also provided.