abstract |
New heterocycloaromatic compounds useful for stimulating the production and release of growth hormone in the body are provided. The compound is represented by the general formula (I), wherein R 1 , R 1 ′, R 2 , R 3 , R 4 , Xa, Y, Z and n are defined below. The compounds provided herein are useful for improving obesity, osteoporosis (improving bone density), muscle mass and strength. [Chemical 1] |