Tetrahydropyrazolopyridine derivatives as ghrelin receptor agonists

A compound of the following formula (I):

• Wherein:
• R1 is C1-6 alkyl, where the alkyl is unsubstituted or substituted with one to three substituents independently selected from halogen;
• R2 is selected from the group consisting of (1) phenyl, (2) CH2-phenyl(CH2OH), and (3) CH2-pyridyl;
• where the benzene ring or the pyridine ring is unsubstituted or substituted with one to two substituents independently selected from (1) halogen, (2) C1-6 alkyl, which may have substituents selected from halogen, and hydroxyl, and (3) C1-6 alkylsulfonyl;
• R3 is (1) benzyl, or (2) CH2-(2-pyridyl);
• where the benzene ring or the pyridine ring is unsubstituted or substituted with one to two substituents independently selected from (1) halogen and (2) C1-6 alkyl, which may have substituents selected from halogen, hydroxyl, and C1-6 alkylsulfonyl;
• or a pharmaceutically acceptable salt thereof.