A compound of the formula (I) wherein the variables X1, X2, R.sup.1 to R.sup.7 including R.sup.3', j, k, p, y, and z, are as defined or a pharmaceutically acceptable salt, solvate, enantiomer, racemate, diastereomer or mixtures thereof, useful for the treatment, prevention or amelioration of obesity and Related Diseases is disclosed.